Ethernet NIC driver for VMware's vmxnet3
From: Shreyas Bhatewara <[email protected]>
This patch adds driver support for VMware's virtual Ethernet NIC: vmxnet3
Guests running on VMware hypervisors supporting vmxnet3 device will thus have
access to improved network functionalities and performance.
Signed-off-by: Shreyas Bhatewara <[email protected]>
Signed-off-by: Bhavesh Davda <[email protected]>
Signed-off-by: Ronghua Zhang <[email protected]>
---
VMware virtual Ethernet NIC Driver : vmxnet3 - v3
Changelog (v3-v2)
- use ethtool instead of a module param to control hw LRO feature
- rebase to 2.6.32-rc3
Changelog (v2-v1)
- Rebased the patch to v2.6.32-rc1
- Changed all uint32_t types to u32 and friends
- Removed duplicate max queue size from upt1_defs.h
- Replaced #defines by enum
- uniform spacing between datatype and membername in structures
- removed some noisy printks, eliminated some BUG_ONs
- corrected arguments of kcalloc
- used pc_request_selected_regions, pci_enable_dev_mem
- elminated not-so-useful wrapper functions, used eth_op_ functions instead
- used strlcpy
- used get_sset_counts instead of get_stats_count
- used net_device_stats from struct net_device
Please review the patch and provide your feedback/comments for
upstreaming.
Thanking you
->Shreyas
---
diff --git a/MAINTAINERS b/MAINTAINERS
index 09a2028..0509f26 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5628,6 +5628,13 @@ S: Maintained
F: drivers/vlynq/vlynq.c
F: include/linux/vlynq.h
+VMWARE VMXNET3 ETHERNET DRIVER
+M: Shreyas Bhatewara <[email protected]>
+M: VMware, Inc. <[email protected]>
+L: [email protected]
+S: Maintained
+F: drivers/net/vmxnet3/
+
VOLTAGE AND CURRENT REGULATOR FRAMEWORK
M: Liam Girdwood <[email protected]>
M: Mark Brown <[email protected]>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 7127760..9789de2 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -3230,4 +3230,12 @@ config VIRTIO_NET
This is the virtual network driver for virtio. It can be used with
lguest or QEMU based VMMs (like KVM or Xen). Say Y or M.
+config VMXNET3
+ tristate "VMware VMXNET3 ethernet driver"
+ depends on PCI && X86
+ help
+ This driver supports VMware's vmxnet3 virtual ethernet NIC.
+ To compile this driver as a module, choose M here: the
+ module will be called vmxnet3.
+
endif # NETDEVICES
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index d866b8c..d3a0418 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_TEHUTI) += tehuti.o
obj-$(CONFIG_ENIC) += enic/
obj-$(CONFIG_JME) += jme.o
obj-$(CONFIG_BE2NET) += benet/
+obj-$(CONFIG_VMXNET3) += vmxnet3/
gianfar_driver-objs := gianfar.o \
gianfar_ethtool.o \
diff --git a/drivers/net/vmxnet3/Makefile b/drivers/net/vmxnet3/Makefile
new file mode 100644
index 0000000..880f509
--- /dev/null
+++ b/drivers/net/vmxnet3/Makefile
@@ -0,0 +1,35 @@
+################################################################################
+#
+# Linux driver for VMware's vmxnet3 ethernet NIC.
+#
+# Copyright (C) 2007-2009, VMware, Inc. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; version 2 of the License and no later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+# NON INFRINGEMENT. See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# The full GNU General Public License is included in this distribution in
+# the file called "COPYING".
+#
+# Maintained by: Shreyas Bhatewara <[email protected]>
+#
+#
+################################################################################
+
+#
+# Makefile for the VMware vmxnet3 ethernet NIC driver
+#
+
+obj-$(CONFIG_VMXNET3) += vmxnet3.o
+
+vmxnet3-objs := vmxnet3_drv.o vmxnet3_ethtool.o
diff --git a/drivers/net/vmxnet3/upt1_defs.h b/drivers/net/vmxnet3/upt1_defs.h
new file mode 100644
index 0000000..37108fb
--- /dev/null
+++ b/drivers/net/vmxnet3/upt1_defs.h
@@ -0,0 +1,96 @@
+/*
+ * Linux driver for VMware's vmxnet3 ethernet NIC.
+ *
+ * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License and no later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Maintained by: Shreyas Bhatewara <[email protected]>
+ *
+ */
+
+#ifndef _UPT1_DEFS_H
+#define _UPT1_DEFS_H
+
+struct UPT1_TxStats {
+ u64 TSOPktsTxOK; /* TSO pkts post-segmentation */
+ u64 TSOBytesTxOK;
+ u64 ucastPktsTxOK;
+ u64 ucastBytesTxOK;
+ u64 mcastPktsTxOK;
+ u64 mcastBytesTxOK;
+ u64 bcastPktsTxOK;
+ u64 bcastBytesTxOK;
+ u64 pktsTxError;
+ u64 pktsTxDiscard;
+};
+
+struct UPT1_RxStats {
+ u64 LROPktsRxOK; /* LRO pkts */
+ u64 LROBytesRxOK; /* bytes from LRO pkts */
+ /* the following counters are for pkts from the wire, i.e., pre-LRO */
+ u64 ucastPktsRxOK;
+ u64 ucastBytesRxOK;
+ u64 mcastPktsRxOK;
+ u64 mcastBytesRxOK;
+ u64 bcastPktsRxOK;
+ u64 bcastBytesRxOK;
+ u64 pktsRxOutOfBuf;
+ u64 pktsRxError;
+};
+
+/* interrupt moderation level */
+enum {
+ UPT1_IML_NONE = 0, /* no interrupt moderation */
+ UPT1_IML_HIGHEST = 7, /* least intr generated */
+ UPT1_IML_ADAPTIVE = 8, /* adpative intr moderation */
+};
+/* values for UPT1_RSSConf.hashFunc */
+enum {
+ UPT1_RSS_HASH_TYPE_NONE = 0x0,
+ UPT1_RSS_HASH_TYPE_IPV4 = 0x01,
+ UPT1_RSS_HASH_TYPE_TCP_IPV4 = 0x02,
+ UPT1_RSS_HASH_TYPE_IPV6 = 0x04,
+ UPT1_RSS_HASH_TYPE_TCP_IPV6 = 0x08,
+};
+
+enum {
+ UPT1_RSS_HASH_FUNC_NONE = 0x0,
+ UPT1_RSS_HASH_FUNC_TOEPLITZ = 0x01,
+};
+
+#define UPT1_RSS_MAX_KEY_SIZE 40
+#define UPT1_RSS_MAX_IND_TABLE_SIZE 128
+
+struct UPT1_RSSConf {
+ u16 hashType;
+ u16 hashFunc;
+ u16 hashKeySize;
+ u16 indTableSize;
+ u8 hashKey[UPT1_RSS_MAX_KEY_SIZE];
+ u8 indTable[UPT1_RSS_MAX_IND_TABLE_SIZE];
+};
+
+/* features */
+enum {
+ UPT1_F_RXCSUM = 0x0001, /* rx csum verification */
+ UPT1_F_RSS = 0x0002,
+ UPT1_F_RXVLAN = 0x0004, /* VLAN tag stripping */
+ UPT1_F_LRO = 0x0008,
+};
+#endif
diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h
new file mode 100644
index 0000000..dc8ee44
--- /dev/null
+++ b/drivers/net/vmxnet3/vmxnet3_defs.h
@@ -0,0 +1,535 @@
+/*
+ * Linux driver for VMware's vmxnet3 ethernet NIC.
+ *
+ * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License and no later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Maintained by: Shreyas Bhatewara <[email protected]>
+ *
+ */
+
+#ifndef _VMXNET3_DEFS_H_
+#define _VMXNET3_DEFS_H_
+
+#include "upt1_defs.h"
+
+/* all registers are 32 bit wide */
+/* BAR 1 */
+enum {
+ VMXNET3_REG_VRRS = 0x0, /* Vmxnet3 Revision Report Selection */
+ VMXNET3_REG_UVRS = 0x8, /* UPT Version Report Selection */
+ VMXNET3_REG_DSAL = 0x10, /* Driver Shared Address Low */
+ VMXNET3_REG_DSAH = 0x18, /* Driver Shared Address High */
+ VMXNET3_REG_CMD = 0x20, /* Command */
+ VMXNET3_REG_MACL = 0x28, /* MAC Address Low */
+ VMXNET3_REG_MACH = 0x30, /* MAC Address High */
+ VMXNET3_REG_ICR = 0x38, /* Interrupt Cause Register */
+ VMXNET3_REG_ECR = 0x40 /* Event Cause Register */
+};
+
+/* BAR 0 */
+enum {
+ VMXNET3_REG_IMR = 0x0, /* Interrupt Mask Register */
+ VMXNET3_REG_TXPROD = 0x600, /* Tx Producer Index */
+ VMXNET3_REG_RXPROD = 0x800, /* Rx Producer Index for ring 1 */
+ VMXNET3_REG_RXPROD2 = 0xA00 /* Rx Producer Index for ring 2 */
+};
+
+#define VMXNET3_PT_REG_SIZE 4096 /* BAR 0 */
+#define VMXNET3_VD_REG_SIZE 4096 /* BAR 1 */
+
+#define VMXNET3_REG_ALIGN 8 /* All registers are 8-byte aligned. */
+#define VMXNET3_REG_ALIGN_MASK 0x7
+
+/* I/O Mapped access to registers */
+#define VMXNET3_IO_TYPE_PT 0
+#define VMXNET3_IO_TYPE_VD 1
+#define VMXNET3_IO_ADDR(type, reg) (((type) << 24) | ((reg) & 0xFFFFFF))
+#define VMXNET3_IO_TYPE(addr) ((addr) >> 24)
+#define VMXNET3_IO_REG(addr) ((addr) & 0xFFFFFF)
+
+enum {
+ VMXNET3_CMD_FIRST_SET = 0xCAFE0000,
+ VMXNET3_CMD_ACTIVATE_DEV = VMXNET3_CMD_FIRST_SET,
+ VMXNET3_CMD_QUIESCE_DEV,
+ VMXNET3_CMD_RESET_DEV,
+ VMXNET3_CMD_UPDATE_RX_MODE,
+ VMXNET3_CMD_UPDATE_MAC_FILTERS,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS,
+ VMXNET3_CMD_UPDATE_RSSIDT,
+ VMXNET3_CMD_UPDATE_IML,
+ VMXNET3_CMD_UPDATE_PMCFG,
+ VMXNET3_CMD_UPDATE_FEATURE,
+ VMXNET3_CMD_LOAD_PLUGIN,
+
+ VMXNET3_CMD_FIRST_GET = 0xF00D0000,
+ VMXNET3_CMD_GET_QUEUE_STATUS = VMXNET3_CMD_FIRST_GET,
+ VMXNET3_CMD_GET_STATS,
+ VMXNET3_CMD_GET_LINK,
+ VMXNET3_CMD_GET_PERM_MAC_LO,
+ VMXNET3_CMD_GET_PERM_MAC_HI,
+ VMXNET3_CMD_GET_DID_LO,
+ VMXNET3_CMD_GET_DID_HI,
+ VMXNET3_CMD_GET_DEV_EXTRA_INFO,
+ VMXNET3_CMD_GET_CONF_INTR
+};
+
+struct Vmxnet3_TxDesc {
+ u64 addr;
+
+ u32 len:14;
+ u32 gen:1; /* generation bit */
+ u32 rsvd:1;
+ u32 dtype:1; /* descriptor type */
+ u32 ext1:1;
+ u32 msscof:14; /* MSS, checksum offset, flags */
+
+ u32 hlen:10; /* header len */
+ u32 om:2; /* offload mode */
+ u32 eop:1; /* End Of Packet */
+ u32 cq:1; /* completion request */
+ u32 ext2:1;
+ u32 ti:1; /* VLAN Tag Insertion */
+ u32 tci:16; /* Tag to Insert */
+};
+
+/* TxDesc.OM values */
+#define VMXNET3_OM_NONE 0
+#define VMXNET3_OM_CSUM 2
+#define VMXNET3_OM_TSO 3
+
+/* fields in TxDesc we access w/o using bit fields */
+#define VMXNET3_TXD_EOP_SHIFT 12
+#define VMXNET3_TXD_CQ_SHIFT 13
+#define VMXNET3_TXD_GEN_SHIFT 14
+
+#define VMXNET3_TXD_CQ (1 << VMXNET3_TXD_CQ_SHIFT)
+#define VMXNET3_TXD_EOP (1 << VMXNET3_TXD_EOP_SHIFT)
+#define VMXNET3_TXD_GEN (1 << VMXNET3_TXD_GEN_SHIFT)
+
+#define VMXNET3_HDR_COPY_SIZE 128
+
+
+struct Vmxnet3_TxDataDesc {
+ u8 data[VMXNET3_HDR_COPY_SIZE];
+};
+
+
+struct Vmxnet3_TxCompDesc {
+ u32 txdIdx:12; /* Index of the EOP TxDesc */
+ u32 ext1:20;
+
+ u32 ext2;
+ u32 ext3;
+
+ u32 rsvd:24;
+ u32 type:7; /* completion type */
+ u32 gen:1; /* generation bit */
+};
+
+
+struct Vmxnet3_RxDesc {
+ u64 addr;
+
+ u32 len:14;
+ u32 btype:1; /* Buffer Type */
+ u32 dtype:1; /* Descriptor type */
+ u32 rsvd:15;
+ u32 gen:1; /* Generation bit */
+
+ u32 ext1;
+};
+
+/* values of RXD.BTYPE */
+#define VMXNET3_RXD_BTYPE_HEAD 0 /* head only */
+#define VMXNET3_RXD_BTYPE_BODY 1 /* body only */
+
+/* fields in RxDesc we access w/o using bit fields */
+#define VMXNET3_RXD_BTYPE_SHIFT 14
+#define VMXNET3_RXD_GEN_SHIFT 31
+
+
+struct Vmxnet3_RxCompDesc {
+ u32 rxdIdx:12; /* Index of the RxDesc */
+ u32 ext1:2;
+ u32 eop:1; /* End of Packet */
+ u32 sop:1; /* Start of Packet */
+ u32 rqID:10; /* rx queue/ring ID */
+ u32 rssType:4; /* RSS hash type used */
+ u32 cnc:1; /* Checksum Not Calculated */
+ u32 ext2:1;
+
+ u32 rssHash; /* RSS hash value */
+
+ u32 len:14; /* data length */
+ u32 err:1; /* Error */
+ u32 ts:1; /* Tag is stripped */
+ u32 tci:16; /* Tag stripped */
+
+ u32 csum:16;
+ u32 tuc:1; /* TCP/UDP Checksum Correct */
+ u32 udp:1; /* UDP packet */
+ u32 tcp:1; /* TCP packet */
+ u32 ipc:1; /* IP Checksum Correct */
+ u32 v6:1; /* IPv6 */
+ u32 v4:1; /* IPv4 */
+ u32 frg:1; /* IP Fragment */
+ u32 fcs:1; /* Frame CRC correct */
+ u32 type:7; /* completion type */
+ u32 gen:1; /* generation bit */
+};
+
+/* fields in RxCompDesc we access via Vmxnet3_GenericDesc.dword[3] */
+#define VMXNET3_RCD_TUC_SHIFT 16
+#define VMXNET3_RCD_IPC_SHIFT 19
+
+/* fields in RxCompDesc we access via Vmxnet3_GenericDesc.qword[1] */
+#define VMXNET3_RCD_TYPE_SHIFT 56
+#define VMXNET3_RCD_GEN_SHIFT 63
+
+/* csum OK for TCP/UDP pkts over IP */
+#define VMXNET3_RCD_CSUM_OK (1 << VMXNET3_RCD_TUC_SHIFT | \
+ 1 << VMXNET3_RCD_IPC_SHIFT)
+
+/* value of RxCompDesc.rssType */
+enum {
+ VMXNET3_RCD_RSS_TYPE_NONE = 0,
+ VMXNET3_RCD_RSS_TYPE_IPV4 = 1,
+ VMXNET3_RCD_RSS_TYPE_TCPIPV4 = 2,
+ VMXNET3_RCD_RSS_TYPE_IPV6 = 3,
+ VMXNET3_RCD_RSS_TYPE_TCPIPV6 = 4,
+};
+
+
+/* a union for accessing all cmd/completion descriptors */
+union Vmxnet3_GenericDesc {
+ u64 qword[2];
+ u32 dword[4];
+ u16 word[8];
+ struct Vmxnet3_TxDesc txd;
+ struct Vmxnet3_RxDesc rxd;
+ struct Vmxnet3_TxCompDesc tcd;
+ struct Vmxnet3_RxCompDesc rcd;
+};
+
+#define VMXNET3_INIT_GEN 1
+
+/* Max size of a single tx buffer */
+#define VMXNET3_MAX_TX_BUF_SIZE (1 << 14)
+
+/* # of tx desc needed for a tx buffer size */
+#define VMXNET3_TXD_NEEDED(size) (((size) + VMXNET3_MAX_TX_BUF_SIZE - 1) / \
+ VMXNET3_MAX_TX_BUF_SIZE)
+
+/* max # of tx descs for a non-tso pkt */
+#define VMXNET3_MAX_TXD_PER_PKT 16
+
+/* Max size of a single rx buffer */
+#define VMXNET3_MAX_RX_BUF_SIZE ((1 << 14) - 1)
+/* Minimum size of a type 0 buffer */
+#define VMXNET3_MIN_T0_BUF_SIZE 128
+#define VMXNET3_MAX_CSUM_OFFSET 1024
+
+/* Ring base address alignment */
+#define VMXNET3_RING_BA_ALIGN 512
+#define VMXNET3_RING_BA_MASK (VMXNET3_RING_BA_ALIGN - 1)
+
+/* Ring size must be a multiple of 32 */
+#define VMXNET3_RING_SIZE_ALIGN 32
+#define VMXNET3_RING_SIZE_MASK (VMXNET3_RING_SIZE_ALIGN - 1)
+
+/* Max ring size */
+#define VMXNET3_TX_RING_MAX_SIZE 4096
+#define VMXNET3_TC_RING_MAX_SIZE 4096
+#define VMXNET3_RX_RING_MAX_SIZE 4096
+#define VMXNET3_RC_RING_MAX_SIZE 8192
+
+/* a list of reasons for queue stop */
+
+enum {
+ VMXNET3_ERR_NOEOP = 0x80000000, /* cannot find the EOP desc of a pkt */
+ VMXNET3_ERR_TXD_REUSE = 0x80000001, /* reuse TxDesc before tx completion */
+ VMXNET3_ERR_BIG_PKT = 0x80000002, /* too many TxDesc for a pkt */
+ VMXNET3_ERR_DESC_NOT_SPT = 0x80000003, /* descriptor type not supported */
+ VMXNET3_ERR_SMALL_BUF = 0x80000004, /* type 0 buffer too small */
+ VMXNET3_ERR_STRESS = 0x80000005, /* stress option firing in vmkernel */
+ VMXNET3_ERR_SWITCH = 0x80000006, /* mode switch failure */
+ VMXNET3_ERR_TXD_INVALID = 0x80000007, /* invalid TxDesc */
+};
+
+/* completion descriptor types */
+#define VMXNET3_CDTYPE_TXCOMP 0 /* Tx Completion Descriptor */
+#define VMXNET3_CDTYPE_RXCOMP 3 /* Rx Completion Descriptor */
+
+enum {
+ VMXNET3_GOS_BITS_UNK = 0, /* unknown */
+ VMXNET3_GOS_BITS_32 = 1,
+ VMXNET3_GOS_BITS_64 = 2,
+};
+
+#define VMXNET3_GOS_TYPE_LINUX 1
+
+
+struct Vmxnet3_GOSInfo {
+ u32 gosBits:2; /* 32-bit or 64-bit? */
+ u32 gosType:4; /* which guest */
+ u32 gosVer:16; /* gos version */
+ u32 gosMisc:10; /* other info about gos */
+};
+
+
+struct Vmxnet3_DriverInfo {
+ u32 version;
+ struct Vmxnet3_GOSInfo gos;
+ u32 vmxnet3RevSpt;
+ u32 uptVerSpt;
+};
+
+
+#define VMXNET3_REV1_MAGIC 0xbabefee1
+
+/*
+ * QueueDescPA must be 128 bytes aligned. It points to an array of
+ * Vmxnet3_TxQueueDesc followed by an array of Vmxnet3_RxQueueDesc.
+ * The number of Vmxnet3_TxQueueDesc/Vmxnet3_RxQueueDesc are specified by
+ * Vmxnet3_MiscConf.numTxQueues/numRxQueues, respectively.
+ */
+#define VMXNET3_QUEUE_DESC_ALIGN 128
+
+
+struct Vmxnet3_MiscConf {
+ struct Vmxnet3_DriverInfo driverInfo;
+ u64 uptFeatures;
+ u64 ddPA; /* driver data PA */
+ u64 queueDescPA; /* queue descriptor table PA */
+ u32 ddLen; /* driver data len */
+ u32 queueDescLen; /* queue desc. table len in bytes */
+ u32 mtu;
+ u16 maxNumRxSG;
+ u8 numTxQueues;
+ u8 numRxQueues;
+ u32 reserved[4];
+};
+
+
+struct Vmxnet3_TxQueueConf {
+ u64 txRingBasePA;
+ u64 dataRingBasePA;
+ u64 compRingBasePA;
+ u64 ddPA; /* driver data */
+ u64 reserved;
+ u32 txRingSize; /* # of tx desc */
+ u32 dataRingSize; /* # of data desc */
+ u32 compRingSize; /* # of comp desc */
+ u32 ddLen; /* size of driver data */
+ u8 intrIdx;
+ u8 _pad[7];
+};
+
+
+struct Vmxnet3_RxQueueConf {
+ u64 rxRingBasePA[2];
+ u64 compRingBasePA;
+ u64 ddPA; /* driver data */
+ u64 reserved;
+ u32 rxRingSize[2]; /* # of rx desc */
+ u32 compRingSize; /* # of rx comp desc */
+ u32 ddLen; /* size of driver data */
+ u8 intrIdx;
+ u8 _pad[7];
+};
+
+
+enum vmxnet3_intr_mask_mode {
+ VMXNET3_IMM_AUTO = 0,
+ VMXNET3_IMM_ACTIVE = 1,
+ VMXNET3_IMM_LAZY = 2
+};
+
+enum vmxnet3_intr_type {
+ VMXNET3_IT_AUTO = 0,
+ VMXNET3_IT_INTX = 1,
+ VMXNET3_IT_MSI = 2,
+ VMXNET3_IT_MSIX = 3
+};
+
+#define VMXNET3_MAX_TX_QUEUES 8
+#define VMXNET3_MAX_RX_QUEUES 16
+/* addition 1 for events */
+#define VMXNET3_MAX_INTRS 25
+
+
+struct Vmxnet3_IntrConf {
+ bool autoMask;
+ u8 numIntrs; /* # of interrupts */
+ u8 eventIntrIdx;
+ u8 modLevels[VMXNET3_MAX_INTRS]; /* moderation level for
+ * each intr */
+ u32 reserved[3];
+};
+
+/* one bit per VLAN ID, the size is in the units of u32 */
+#define VMXNET3_VFT_SIZE (4096 / (sizeof(u32) * 8))
+
+
+struct Vmxnet3_QueueStatus {
+ bool stopped;
+ u8 _pad[3];
+ u32 error;
+};
+
+
+struct Vmxnet3_TxQueueCtrl {
+ u32 txNumDeferred;
+ u32 txThreshold;
+ u64 reserved;
+};
+
+
+struct Vmxnet3_RxQueueCtrl {
+ bool updateRxProd;
+ u8 _pad[7];
+ u64 reserved;
+};
+
+enum {
+ VMXNET3_RXM_UCAST = 0x01, /* unicast only */
+ VMXNET3_RXM_MCAST = 0x02, /* multicast passing the filters */
+ VMXNET3_RXM_BCAST = 0x04, /* broadcast only */
+ VMXNET3_RXM_ALL_MULTI = 0x08, /* all multicast */
+ VMXNET3_RXM_PROMISC = 0x10 /* promiscuous */
+};
+
+struct Vmxnet3_RxFilterConf {
+ u32 rxMode; /* VMXNET3_RXM_xxx */
+ u16 mfTableLen; /* size of the multicast filter table */
+ u16 _pad1;
+ u64 mfTablePA; /* PA of the multicast filters table */
+ u32 vfTable[VMXNET3_VFT_SIZE]; /* vlan filter */
+};
+
+
+#define VMXNET3_PM_MAX_FILTERS 6
+#define VMXNET3_PM_MAX_PATTERN_SIZE 128
+#define VMXNET3_PM_MAX_MASK_SIZE (VMXNET3_PM_MAX_PATTERN_SIZE / 8)
+
+#define VMXNET3_PM_WAKEUP_MAGIC 0x01 /* wake up on magic pkts */
+#define VMXNET3_PM_WAKEUP_FILTER 0x02 /* wake up on pkts matching
+ * filters */
+
+
+struct Vmxnet3_PM_PktFilter {
+ u8 maskSize;
+ u8 patternSize;
+ u8 mask[VMXNET3_PM_MAX_MASK_SIZE];
+ u8 pattern[VMXNET3_PM_MAX_PATTERN_SIZE];
+ u8 pad[6];
+};
+
+
+struct Vmxnet3_PMConf {
+ u16 wakeUpEvents; /* VMXNET3_PM_WAKEUP_xxx */
+ u8 numFilters;
+ u8 pad[5];
+ struct Vmxnet3_PM_PktFilter filters[VMXNET3_PM_MAX_FILTERS];
+};
+
+
+struct Vmxnet3_VariableLenConfDesc {
+ u32 confVer;
+ u32 confLen;
+ u64 confPA;
+};
+
+
+struct Vmxnet3_TxQueueDesc {
+ struct Vmxnet3_TxQueueCtrl ctrl;
+ struct Vmxnet3_TxQueueConf conf;
+
+ /* Driver read after a GET command */
+ struct Vmxnet3_QueueStatus status;
+ struct UPT1_TxStats stats;
+ u8 _pad[88]; /* 128 aligned */
+};
+
+
+struct Vmxnet3_RxQueueDesc {
+ struct Vmxnet3_RxQueueCtrl ctrl;
+ struct Vmxnet3_RxQueueConf conf;
+ /* Driver read after a GET commad */
+ struct Vmxnet3_QueueStatus status;
+ struct UPT1_RxStats stats;
+ u8 __pad[88]; /* 128 aligned */
+};
+
+
+struct Vmxnet3_DSDevRead {
+ /* read-only region for device, read by dev in response to a SET cmd */
+ struct Vmxnet3_MiscConf misc;
+ struct Vmxnet3_IntrConf intrConf;
+ struct Vmxnet3_RxFilterConf rxFilterConf;
+ struct Vmxnet3_VariableLenConfDesc rssConfDesc;
+ struct Vmxnet3_VariableLenConfDesc pmConfDesc;
+ struct Vmxnet3_VariableLenConfDesc pluginConfDesc;
+};
+
+/* All structures in DriverShared are padded to multiples of 8 bytes */
+struct Vmxnet3_DriverShared {
+ u32 magic;
+ /* make devRead start at 64bit boundaries */
+ u32 pad;
+ struct Vmxnet3_DSDevRead devRead;
+ u32 ecr;
+ u32 reserved[5];
+};
+
+
+#define VMXNET3_ECR_RQERR (1 << 0)
+#define VMXNET3_ECR_TQERR (1 << 1)
+#define VMXNET3_ECR_LINK (1 << 2)
+#define VMXNET3_ECR_DIC (1 << 3)
+#define VMXNET3_ECR_DEBUG (1 << 4)
+
+/* flip the gen bit of a ring */
+#define VMXNET3_FLIP_RING_GEN(gen) ((gen) = (gen) ^ 0x1)
+
+/* only use this if moving the idx won't affect the gen bit */
+#define VMXNET3_INC_RING_IDX_ONLY(idx, ring_size) \
+ do {\
+ (idx)++;\
+ if (unlikely((idx) == (ring_size))) {\
+ (idx) = 0;\
+ } \
+ } while (0)
+
+#define VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid) \
+ (vfTable[vid >> 5] |= (1 << (vid & 31)))
+#define VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid) \
+ (vfTable[vid >> 5] &= ~(1 << (vid & 31)))
+
+#define VMXNET3_VFTABLE_ENTRY_IS_SET(vfTable, vid) \
+ ((vfTable[vid >> 5] & (1 << (vid & 31))) != 0)
+
+#define VMXNET3_MAX_MTU 9000
+#define VMXNET3_MIN_MTU 60
+
+#define VMXNET3_LINK_UP (10000 << 16 | 1) /* 10 Gbps, up */
+#define VMXNET3_LINK_DOWN 0
+
+#endif /* _VMXNET3_DEFS_H_ */
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
new file mode 100644
index 0000000..a886f24
--- /dev/null
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -0,0 +1,2553 @@
+/*
+ * Linux driver for VMware's vmxnet3 ethernet NIC.
+ *
+ * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License and no later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Maintained by: Shreyas Bhatewara <[email protected]>
+ *
+ */
+
+#include "vmxnet3_int.h"
+
+char vmxnet3_driver_name[] = "vmxnet3";
+#define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver"
+
+
+/*
+ * PCI Device ID Table
+ * Last entry must be all 0s
+ */
+static const struct pci_device_id vmxnet3_pciid_table[] = {
+ {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table);
+
+static atomic_t devices_found;
+
+
+/*
+ * Enable/Disable the given intr
+ */
+static void
+vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
+{
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0);
+}
+
+
+static void
+vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
+{
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1);
+}
+
+
+/*
+ * Enable/Disable all intrs used by the device
+ */
+static void
+vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ vmxnet3_enable_intr(adapter, i);
+}
+
+
+static void
+vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ vmxnet3_disable_intr(adapter, i);
+}
+
+
+static void
+vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events)
+{
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events);
+}
+
+
+static bool
+vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+ return netif_queue_stopped(adapter->netdev);
+}
+
+
+static void
+vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+ tq->stopped = false;
+ netif_start_queue(adapter->netdev);
+}
+
+
+static void
+vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+ tq->stopped = false;
+ netif_wake_queue(adapter->netdev);
+}
+
+
+static void
+vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
+{
+ tq->stopped = true;
+ tq->num_stop++;
+ netif_stop_queue(adapter->netdev);
+}
+
+
+/*
+ * Check the link state. This may start or stop the tx queue.
+ */
+static void
+vmxnet3_check_link(struct vmxnet3_adapter *adapter)
+{
+ u32 ret;
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
+ ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+ adapter->link_speed = ret >> 16;
+ if (ret & 1) { /* Link is up. */
+ printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n",
+ adapter->netdev->name, adapter->link_speed);
+ if (!netif_carrier_ok(adapter->netdev))
+ netif_carrier_on(adapter->netdev);
+
+ vmxnet3_tq_start(&adapter->tx_queue, adapter);
+ } else {
+ printk(KERN_INFO "%s: NIC Link is Down\n",
+ adapter->netdev->name);
+ if (netif_carrier_ok(adapter->netdev))
+ netif_carrier_off(adapter->netdev);
+
+ vmxnet3_tq_stop(&adapter->tx_queue, adapter);
+ }
+}
+
+
+static void
+vmxnet3_process_events(struct vmxnet3_adapter *adapter)
+{
+ u32 events = adapter->shared->ecr;
+ if (!events)
+ return;
+
+ vmxnet3_ack_events(adapter, events);
+
+ /* Check if link state has changed */
+ if (events & VMXNET3_ECR_LINK)
+ vmxnet3_check_link(adapter);
+
+ /* Check if there is an error on xmit/recv queues */
+ if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_GET_QUEUE_STATUS);
+
+ if (adapter->tqd_start->status.stopped) {
+ printk(KERN_ERR "%s: tq error 0x%x\n",
+ adapter->netdev->name,
+ adapter->tqd_start->status.error);
+ }
+ if (adapter->rqd_start->status.stopped) {
+ printk(KERN_ERR "%s: rq error 0x%x\n",
+ adapter->netdev->name,
+ adapter->rqd_start->status.error);
+ }
+
+ schedule_work(&adapter->work);
+ }
+}
+
+
+static void
+vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
+ struct pci_dev *pdev)
+{
+ if (tbi->map_type == VMXNET3_MAP_SINGLE)
+ pci_unmap_single(pdev, tbi->dma_addr, tbi->len,
+ PCI_DMA_TODEVICE);
+ else if (tbi->map_type == VMXNET3_MAP_PAGE)
+ pci_unmap_page(pdev, tbi->dma_addr, tbi->len,
+ PCI_DMA_TODEVICE);
+ else
+ BUG_ON(tbi->map_type != VMXNET3_MAP_NONE);
+
+ tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */
+}
+
+
+static int
+vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq,
+ struct pci_dev *pdev, struct vmxnet3_adapter *adapter)
+{
+ struct sk_buff *skb;
+ int entries = 0;
+
+ /* no out of order completion */
+ BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp);
+ BUG_ON(tq->tx_ring.base[eop_idx].txd.eop != 1);
+
+ skb = tq->buf_info[eop_idx].skb;
+ BUG_ON(skb == NULL);
+ tq->buf_info[eop_idx].skb = NULL;
+
+ VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size);
+
+ while (tq->tx_ring.next2comp != eop_idx) {
+ vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp,
+ pdev);
+
+ /* update next2comp w/o tx_lock. Since we are marking more,
+ * instead of less, tx ring entries avail, the worst case is
+ * that the tx routine incorrectly re-queues a pkt due to
+ * insufficient tx ring entries.
+ */
+ vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
+ entries++;
+ }
+
+ dev_kfree_skb_any(skb);
+ return entries;
+}
+
+
+static int
+vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ int completed = 0;
+ union Vmxnet3_GenericDesc *gdesc;
+
+ gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
+ while (gdesc->tcd.gen == tq->comp_ring.gen) {
+ completed += vmxnet3_unmap_pkt(gdesc->tcd.txdIdx, tq,
+ adapter->pdev, adapter);
+
+ vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring);
+ gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
+ }
+
+ if (completed) {
+ spin_lock(&tq->tx_lock);
+ if (unlikely(vmxnet3_tq_stopped(tq, adapter) &&
+ vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) >
+ VMXNET3_WAKE_QUEUE_THRESHOLD(tq) &&
+ netif_carrier_ok(adapter->netdev))) {
+ vmxnet3_tq_wake(tq, adapter);
+ }
+ spin_unlock(&tq->tx_lock);
+ }
+ return completed;
+}
+
+
+static void
+vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ int i;
+
+ while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) {
+ struct vmxnet3_tx_buf_info *tbi;
+ union Vmxnet3_GenericDesc *gdesc;
+
+ tbi = tq->buf_info + tq->tx_ring.next2comp;
+ gdesc = tq->tx_ring.base + tq->tx_ring.next2comp;
+
+ vmxnet3_unmap_tx_buf(tbi, adapter->pdev);
+ if (tbi->skb) {
+ dev_kfree_skb_any(tbi->skb);
+ tbi->skb = NULL;
+ }
+ vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
+ }
+
+ /* sanity check, verify all buffers are indeed unmapped and freed */
+ for (i = 0; i < tq->tx_ring.size; i++) {
+ BUG_ON(tq->buf_info[i].skb != NULL ||
+ tq->buf_info[i].map_type != VMXNET3_MAP_NONE);
+ }
+
+ tq->tx_ring.gen = VMXNET3_INIT_GEN;
+ tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
+
+ tq->comp_ring.gen = VMXNET3_INIT_GEN;
+ tq->comp_ring.next2proc = 0;
+}
+
+
+void
+vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ if (tq->tx_ring.base) {
+ pci_free_consistent(adapter->pdev, tq->tx_ring.size *
+ sizeof(struct Vmxnet3_TxDesc),
+ tq->tx_ring.base, tq->tx_ring.basePA);
+ tq->tx_ring.base = NULL;
+ }
+ if (tq->data_ring.base) {
+ pci_free_consistent(adapter->pdev, tq->data_ring.size *
+ sizeof(struct Vmxnet3_TxDataDesc),
+ tq->data_ring.base, tq->data_ring.basePA);
+ tq->data_ring.base = NULL;
+ }
+ if (tq->comp_ring.base) {
+ pci_free_consistent(adapter->pdev, tq->comp_ring.size *
+ sizeof(struct Vmxnet3_TxCompDesc),
+ tq->comp_ring.base, tq->comp_ring.basePA);
+ tq->comp_ring.base = NULL;
+ }
+ kfree(tq->buf_info);
+ tq->buf_info = NULL;
+}
+
+
+static void
+vmxnet3_tq_init(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ int i;
+
+ /* reset the tx ring contents to 0 and reset the tx ring states */
+ memset(tq->tx_ring.base, 0, tq->tx_ring.size *
+ sizeof(struct Vmxnet3_TxDesc));
+ tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
+ tq->tx_ring.gen = VMXNET3_INIT_GEN;
+
+ memset(tq->data_ring.base, 0, tq->data_ring.size *
+ sizeof(struct Vmxnet3_TxDataDesc));
+
+ /* reset the tx comp ring contents to 0 and reset comp ring states */
+ memset(tq->comp_ring.base, 0, tq->comp_ring.size *
+ sizeof(struct Vmxnet3_TxCompDesc));
+ tq->comp_ring.next2proc = 0;
+ tq->comp_ring.gen = VMXNET3_INIT_GEN;
+
+ /* reset the bookkeeping data */
+ memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size);
+ for (i = 0; i < tq->tx_ring.size; i++)
+ tq->buf_info[i].map_type = VMXNET3_MAP_NONE;
+
+ /* stats are not reset */
+}
+
+
+static int
+vmxnet3_tq_create(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter)
+{
+ BUG_ON(tq->tx_ring.base || tq->data_ring.base ||
+ tq->comp_ring.base || tq->buf_info);
+
+ tq->tx_ring.base = pci_alloc_consistent(adapter->pdev, tq->tx_ring.size
+ * sizeof(struct Vmxnet3_TxDesc),
+ &tq->tx_ring.basePA);
+ if (!tq->tx_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate tx ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ tq->data_ring.base = pci_alloc_consistent(adapter->pdev,
+ tq->data_ring.size *
+ sizeof(struct Vmxnet3_TxDataDesc),
+ &tq->data_ring.basePA);
+ if (!tq->data_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate data ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ tq->comp_ring.base = pci_alloc_consistent(adapter->pdev,
+ tq->comp_ring.size *
+ sizeof(struct Vmxnet3_TxCompDesc),
+ &tq->comp_ring.basePA);
+ if (!tq->comp_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate tx comp ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]),
+ GFP_KERNEL);
+ if (!tq->buf_info) {
+ printk(KERN_ERR "%s: failed to allocate tx bufinfo\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ vmxnet3_tq_destroy(tq, adapter);
+ return -ENOMEM;
+}
+
+
+/*
+ * starting from ring->next2fill, allocate rx buffers for the given ring
+ * of the rx queue and update the rx desc. stop after @num_to_alloc buffers
+ * are allocated or allocation fails
+ */
+
+static int
+vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
+ int num_to_alloc, struct vmxnet3_adapter *adapter)
+{
+ int num_allocated = 0;
+ struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx];
+ struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx];
+ u32 val;
+
+ while (num_allocated < num_to_alloc) {
+ struct vmxnet3_rx_buf_info *rbi;
+ union Vmxnet3_GenericDesc *gd;
+
+ rbi = rbi_base + ring->next2fill;
+ gd = ring->base + ring->next2fill;
+
+ if (rbi->buf_type == VMXNET3_RX_BUF_SKB) {
+ if (rbi->skb == NULL) {
+ rbi->skb = dev_alloc_skb(rbi->len +
+ NET_IP_ALIGN);
+ if (unlikely(rbi->skb == NULL)) {
+ rq->stats.rx_buf_alloc_failure++;
+ break;
+ }
+ rbi->skb->dev = adapter->netdev;
+
+ skb_reserve(rbi->skb, NET_IP_ALIGN);
+ rbi->dma_addr = pci_map_single(adapter->pdev,
+ rbi->skb->data, rbi->len,
+ PCI_DMA_FROMDEVICE);
+ } else {
+ /* rx buffer skipped by the device */
+ }
+ val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT;
+ } else {
+ BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE ||
+ rbi->len != PAGE_SIZE);
+
+ if (rbi->page == NULL) {
+ rbi->page = alloc_page(GFP_ATOMIC);
+ if (unlikely(rbi->page == NULL)) {
+ rq->stats.rx_buf_alloc_failure++;
+ break;
+ }
+ rbi->dma_addr = pci_map_page(adapter->pdev,
+ rbi->page, 0, PAGE_SIZE,
+ PCI_DMA_FROMDEVICE);
+ } else {
+ /* rx buffers skipped by the device */
+ }
+ val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT;
+ }
+
+ BUG_ON(rbi->dma_addr == 0);
+ gd->rxd.addr = rbi->dma_addr;
+ gd->dword[2] = (ring->gen << VMXNET3_RXD_GEN_SHIFT) | val |
+ rbi->len;
+
+ num_allocated++;
+ vmxnet3_cmd_ring_adv_next2fill(ring);
+ }
+ rq->uncommitted[ring_idx] += num_allocated;
+
+ dprintk(KERN_ERR "alloc_rx_buf: %d allocated, next2fill %u, next2comp "
+ "%u, uncommited %u\n", num_allocated, ring->next2fill,
+ ring->next2comp, rq->uncommitted[ring_idx]);
+
+ /* so that the device can distinguish a full ring and an empty ring */
+ BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp);
+
+ return num_allocated;
+}
+
+
+static void
+vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd,
+ struct vmxnet3_rx_buf_info *rbi)
+{
+ struct skb_frag_struct *frag = skb_shinfo(skb)->frags +
+ skb_shinfo(skb)->nr_frags;
+
+ BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS);
+
+ frag->page = rbi->page;
+ frag->page_offset = 0;
+ frag->size = rcd->len;
+ skb->data_len += frag->size;
+ skb_shinfo(skb)->nr_frags++;
+}
+
+
+static void
+vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx,
+ struct vmxnet3_tx_queue *tq, struct pci_dev *pdev,
+ struct vmxnet3_adapter *adapter)
+{
+ u32 dw2, len;
+ unsigned long buf_offset;
+ int i;
+ union Vmxnet3_GenericDesc *gdesc;
+ struct vmxnet3_tx_buf_info *tbi = NULL;
+
+ BUG_ON(ctx->copy_size > skb_headlen(skb));
+
+ /* use the previous gen bit for the SOP desc */
+ dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT;
+
+ ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill;
+ gdesc = ctx->sop_txd; /* both loops below can be skipped */
+
+ /* no need to map the buffer if headers are copied */
+ if (ctx->copy_size) {
+ ctx->sop_txd->txd.addr = tq->data_ring.basePA +
+ tq->tx_ring.next2fill *
+ sizeof(struct Vmxnet3_TxDataDesc);
+ ctx->sop_txd->dword[2] = dw2 | ctx->copy_size;
+ ctx->sop_txd->dword[3] = 0;
+
+ tbi = tq->buf_info + tq->tx_ring.next2fill;
+ tbi->map_type = VMXNET3_MAP_NONE;
+
+ dprintk(KERN_ERR "txd[%u]: 0x%Lx 0x%x 0x%x\n",
+ tq->tx_ring.next2fill, ctx->sop_txd->txd.addr,
+ ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]);
+ vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
+
+ /* use the right gen for non-SOP desc */
+ dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+ }
+
+ /* linear part can use multiple tx desc if it's big */
+ len = skb_headlen(skb) - ctx->copy_size;
+ buf_offset = ctx->copy_size;
+ while (len) {
+ u32 buf_size;
+
+ buf_size = len > VMXNET3_MAX_TX_BUF_SIZE ?
+ VMXNET3_MAX_TX_BUF_SIZE : len;
+
+ tbi = tq->buf_info + tq->tx_ring.next2fill;
+ tbi->map_type = VMXNET3_MAP_SINGLE;
+ tbi->dma_addr = pci_map_single(adapter->pdev,
+ skb->data + buf_offset, buf_size,
+ PCI_DMA_TODEVICE);
+
+ tbi->len = buf_size; /* this automatically convert 2^14 to 0 */
+
+ gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
+ BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
+
+ gdesc->txd.addr = tbi->dma_addr;
+ gdesc->dword[2] = dw2 | buf_size;
+ gdesc->dword[3] = 0;
+
+ dprintk(KERN_ERR "txd[%u]: 0x%Lx 0x%x 0x%x\n",
+ tq->tx_ring.next2fill, gdesc->txd.addr,
+ gdesc->dword[2], gdesc->dword[3]);
+ vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
+ dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+
+ len -= buf_size;
+ buf_offset += buf_size;
+ }
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
+
+ tbi = tq->buf_info + tq->tx_ring.next2fill;
+ tbi->map_type = VMXNET3_MAP_PAGE;
+ tbi->dma_addr = pci_map_page(adapter->pdev, frag->page,
+ frag->page_offset, frag->size,
+ PCI_DMA_TODEVICE);
+
+ tbi->len = frag->size;
+
+ gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
+ BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
+
+ gdesc->txd.addr = tbi->dma_addr;
+ gdesc->dword[2] = dw2 | frag->size;
+ gdesc->dword[3] = 0;
+
+ dprintk(KERN_ERR "txd[%u]: 0x%llu %u %u\n",
+ tq->tx_ring.next2fill, gdesc->txd.addr,
+ gdesc->dword[2], gdesc->dword[3]);
+ vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
+ dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
+ }
+
+ ctx->eop_txd = gdesc;
+
+ /* set the last buf_info for the pkt */
+ tbi->skb = skb;
+ tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base;
+}
+
+
+/*
+ * parse and copy relevant protocol headers:
+ * For a tso pkt, relevant headers are L2/3/4 including options
+ * For a pkt requesting csum offloading, they are L2/3 and may include L4
+ * if it's a TCP/UDP pkt
+ *
+ * Returns:
+ * -1: error happens during parsing
+ * 0: protocol headers parsed, but too big to be copied
+ * 1: protocol headers parsed and copied
+ *
+ * Other effects:
+ * 1. related *ctx fields are updated.
+ * 2. ctx->copy_size is # of bytes copied
+ * 3. the portion copied is guaranteed to be in the linear part
+ *
+ */
+static int
+vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_tx_ctx *ctx,
+ struct vmxnet3_adapter *adapter)
+{
+ struct Vmxnet3_TxDataDesc *tdd;
+
+ if (ctx->mss) {
+ ctx->eth_ip_hdr_size = skb_transport_offset(skb);
+ ctx->l4_hdr_size = ((struct tcphdr *)
+ skb_transport_header(skb))->doff * 4;
+ ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size;
+ } else {
+ unsigned int pull_size;
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ ctx->eth_ip_hdr_size = skb_transport_offset(skb);
+
+ if (ctx->ipv4) {
+ struct iphdr *iph = (struct iphdr *)
+ skb_network_header(skb);
+ if (iph->protocol == IPPROTO_TCP) {
+ pull_size = ctx->eth_ip_hdr_size +
+ sizeof(struct tcphdr);
+
+ if (unlikely(!pskb_may_pull(skb,
+ pull_size))) {
+ goto err;
+ }
+ ctx->l4_hdr_size = ((struct tcphdr *)
+ skb_transport_header(skb))->doff * 4;
+ } else if (iph->protocol == IPPROTO_UDP) {
+ ctx->l4_hdr_size =
+ sizeof(struct udphdr);
+ } else {
+ ctx->l4_hdr_size = 0;
+ }
+ } else {
+ /* for simplicity, don't copy L4 headers */
+ ctx->l4_hdr_size = 0;
+ }
+ ctx->copy_size = ctx->eth_ip_hdr_size +
+ ctx->l4_hdr_size;
+ } else {
+ ctx->eth_ip_hdr_size = 0;
+ ctx->l4_hdr_size = 0;
+ /* copy as much as allowed */
+ ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE
+ , skb_headlen(skb));
+ }
+
+ /* make sure headers are accessible directly */
+ if (unlikely(!pskb_may_pull(skb, ctx->copy_size)))
+ goto err;
+ }
+
+ if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) {
+ tq->stats.oversized_hdr++;
+ ctx->copy_size = 0;
+ return 0;
+ }
+
+ tdd = tq->data_ring.base + tq->tx_ring.next2fill;
+
+ memcpy(tdd->data, skb->data, ctx->copy_size);
+ dprintk(KERN_ERR "copy %u bytes to dataRing[%u]\n",
+ ctx->copy_size, tq->tx_ring.next2fill);
+ return 1;
+
+err:
+ return -1;
+}
+
+
+static void
+vmxnet3_prepare_tso(struct sk_buff *skb,
+ struct vmxnet3_tx_ctx *ctx)
+{
+ struct tcphdr *tcph = (struct tcphdr *)skb_transport_header(skb);
+ if (ctx->ipv4) {
+ struct iphdr *iph = (struct iphdr *)skb_network_header(skb);
+ iph->check = 0;
+ tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
+ IPPROTO_TCP, 0);
+ } else {
+ struct ipv6hdr *iph = (struct ipv6hdr *)skb_network_header(skb);
+ tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0,
+ IPPROTO_TCP, 0);
+ }
+}
+
+
+/*
+ * Transmits a pkt thru a given tq
+ * Returns:
+ * NETDEV_TX_OK: descriptors are setup successfully
+ * NETDEV_TX_OK: error occured, the pkt is dropped
+ * NETDEV_TX_BUSY: tx ring is full, queue is stopped
+ *
+ * Side-effects:
+ * 1. tx ring may be changed
+ * 2. tq stats may be updated accordingly
+ * 3. shared->txNumDeferred may be updated
+ */
+
+static int
+vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter, struct net_device *netdev)
+{
+ int ret;
+ u32 count;
+ unsigned long flags;
+ struct vmxnet3_tx_ctx ctx;
+ union Vmxnet3_GenericDesc *gdesc;
+
+ /* conservatively estimate # of descriptors to use */
+ count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) +
+ skb_shinfo(skb)->nr_frags + 1;
+
+ ctx.ipv4 = (skb->protocol == __constant_ntohs(ETH_P_IP));
+
+ ctx.mss = skb_shinfo(skb)->gso_size;
+ if (ctx.mss) {
+ if (skb_header_cloned(skb)) {
+ if (unlikely(pskb_expand_head(skb, 0, 0,
+ GFP_ATOMIC) != 0)) {
+ tq->stats.drop_tso++;
+ goto drop_pkt;
+ }
+ tq->stats.copy_skb_header++;
+ }
+ vmxnet3_prepare_tso(skb, &ctx);
+ } else {
+ if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) {
+
+ /* non-tso pkts must not use more than
+ * VMXNET3_MAX_TXD_PER_PKT entries
+ */
+ if (skb_linearize(skb) != 0) {
+ tq->stats.drop_too_many_frags++;
+ goto drop_pkt;
+ }
+ tq->stats.linearized++;
+
+ /* recalculate the # of descriptors to use */
+ count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1;
+ }
+ }
+
+ ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter);
+ if (ret >= 0) {
+ BUG_ON(ret <= 0 && ctx.copy_size != 0);
+ /* hdrs parsed, check against other limits */
+ if (ctx.mss) {
+ if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size >
+ VMXNET3_MAX_TX_BUF_SIZE)) {
+ goto hdr_too_big;
+ }
+ } else {
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ if (unlikely(ctx.eth_ip_hdr_size +
+ skb->csum_offset >
+ VMXNET3_MAX_CSUM_OFFSET)) {
+ goto hdr_too_big;
+ }
+ }
+ }
+ } else {
+ tq->stats.drop_hdr_inspect_err++;
+ goto drop_pkt;
+ }
+
+ spin_lock_irqsave(&tq->tx_lock, flags);
+
+ if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) {
+ tq->stats.tx_ring_full++;
+ dprintk(KERN_ERR "tx queue stopped on %s, next2comp %u"
+ " next2fill %u\n", adapter->netdev->name,
+ tq->tx_ring.next2comp, tq->tx_ring.next2fill);
+
+ vmxnet3_tq_stop(tq, adapter);
+ spin_unlock_irqrestore(&tq->tx_lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ /* fill tx descs related to addr & len */
+ vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter);
+
+ /* setup the EOP desc */
+ ctx.eop_txd->dword[3] = VMXNET3_TXD_CQ | VMXNET3_TXD_EOP;
+
+ /* setup the SOP desc */
+ gdesc = ctx.sop_txd;
+ if (ctx.mss) {
+ gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size;
+ gdesc->txd.om = VMXNET3_OM_TSO;
+ gdesc->txd.msscof = ctx.mss;
+ tq->shared->txNumDeferred += (skb->len - gdesc->txd.hlen +
+ ctx.mss - 1) / ctx.mss;
+ } else {
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ gdesc->txd.hlen = ctx.eth_ip_hdr_size;
+ gdesc->txd.om = VMXNET3_OM_CSUM;
+ gdesc->txd.msscof = ctx.eth_ip_hdr_size +
+ skb->csum_offset;
+ } else {
+ gdesc->txd.om = 0;
+ gdesc->txd.msscof = 0;
+ }
+ tq->shared->txNumDeferred++;
+ }
+
+ if (vlan_tx_tag_present(skb)) {
+ gdesc->txd.ti = 1;
+ gdesc->txd.tci = vlan_tx_tag_get(skb);
+ }
+
+ wmb();
+
+ /* finally flips the GEN bit of the SOP desc */
+ gdesc->dword[2] ^= VMXNET3_TXD_GEN;
+ dprintk(KERN_ERR "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n",
+ (u32)((union Vmxnet3_GenericDesc *)ctx.sop_txd -
+ tq->tx_ring.base), gdesc->txd.addr, gdesc->dword[2],
+ gdesc->dword[3]);
+
+ spin_unlock_irqrestore(&tq->tx_lock, flags);
+
+ if (tq->shared->txNumDeferred >= tq->shared->txThreshold) {
+ tq->shared->txNumDeferred = 0;
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_TXPROD,
+ tq->tx_ring.next2fill);
+ }
+ netdev->trans_start = jiffies;
+
+ return NETDEV_TX_OK;
+
+hdr_too_big:
+ tq->stats.drop_oversized_hdr++;
+drop_pkt:
+ tq->stats.drop_total++;
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+}
+
+
+static netdev_tx_t
+vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ struct vmxnet3_tx_queue *tq = &adapter->tx_queue;
+
+ return vmxnet3_tq_xmit(skb, tq, adapter, netdev);
+}
+
+
+static void
+vmxnet3_rx_csum(struct vmxnet3_adapter *adapter,
+ struct sk_buff *skb,
+ union Vmxnet3_GenericDesc *gdesc)
+{
+ if (!gdesc->rcd.cnc && adapter->rxcsum) {
+ /* typical case: TCP/UDP over IP and both csums are correct */
+ if ((gdesc->dword[3] & VMXNET3_RCD_CSUM_OK) ==
+ VMXNET3_RCD_CSUM_OK) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp));
+ BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6));
+ BUG_ON(gdesc->rcd.frg);
+ } else {
+ if (gdesc->rcd.csum) {
+ skb->csum = htons(gdesc->rcd.csum);
+ skb->ip_summed = CHECKSUM_PARTIAL;
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+ }
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+}
+
+
+static void
+vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd,
+ struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter)
+{
+ rq->stats.drop_err++;
+ if (!rcd->fcs)
+ rq->stats.drop_fcs++;
+
+ rq->stats.drop_total++;
+
+ /*
+ * We do not unmap and chain the rx buffer to the skb.
+ * We basically pretend this buffer is not used and will be recycled
+ * by vmxnet3_rq_alloc_rx_buf()
+ */
+
+ /*
+ * ctx->skb may be NULL if this is the first and the only one
+ * desc for the pkt
+ */
+ if (ctx->skb)
+ dev_kfree_skb_irq(ctx->skb);
+
+ ctx->skb = NULL;
+}
+
+
+static int
+vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter, int quota)
+{
+ static u32 rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2};
+ u32 num_rxd = 0;
+ struct Vmxnet3_RxCompDesc *rcd;
+ struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx;
+
+ rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
+ while (rcd->gen == rq->comp_ring.gen) {
+ struct vmxnet3_rx_buf_info *rbi;
+ struct sk_buff *skb;
+ int num_to_alloc;
+ struct Vmxnet3_RxDesc *rxd;
+ u32 idx, ring_idx;
+
+ if (num_rxd >= quota) {
+ /* we may stop even before we see the EOP desc of
+ * the current pkt
+ */
+ break;
+ }
+ num_rxd++;
+
+ idx = rcd->rxdIdx;
+ ring_idx = rcd->rqID == rq->qid ? 0 : 1;
+
+ rxd = &rq->rx_ring[ring_idx].base[idx].rxd;
+ rbi = rq->buf_info[ring_idx] + idx;
+
+ BUG_ON(rxd->addr != rbi->dma_addr || rxd->len != rbi->len);
+
+ if (unlikely(rcd->eop && rcd->err)) {
+ vmxnet3_rx_error(rq, rcd, ctx, adapter);
+ goto rcd_done;
+ }
+
+ if (rcd->sop) { /* first buf of the pkt */
+ BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD ||
+ rcd->rqID != rq->qid);
+
+ BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB);
+ BUG_ON(ctx->skb != NULL || rbi->skb == NULL);
+
+ if (unlikely(rcd->len == 0)) {
+ /* Pretend the rx buffer is skipped. */
+ BUG_ON(!(rcd->sop && rcd->eop));
+ dprintk(KERN_ERR "rxRing[%u][%u] 0 length\n",
+ ring_idx, idx);
+ goto rcd_done;
+ }
+
+ ctx->skb = rbi->skb;
+ rbi->skb = NULL;
+
+ pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len,
+ PCI_DMA_FROMDEVICE);
+
+ skb_put(ctx->skb, rcd->len);
+ } else {
+ BUG_ON(ctx->skb == NULL);
+ /* non SOP buffer must be type 1 in most cases */
+ if (rbi->buf_type == VMXNET3_RX_BUF_PAGE) {
+ BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY);
+
+ if (rcd->len) {
+ pci_unmap_page(adapter->pdev,
+ rbi->dma_addr, rbi->len,
+ PCI_DMA_FROMDEVICE);
+
+ vmxnet3_append_frag(ctx->skb, rcd, rbi);
+ rbi->page = NULL;
+ }
+ } else {
+ /*
+ * The only time a non-SOP buffer is type 0 is
+ * when it's EOP and error flag is raised, which
+ * has already been handled.
+ */
+ BUG_ON(true);
+ }
+ }
+
+ skb = ctx->skb;
+ if (rcd->eop) {
+ skb->len += skb->data_len;
+ skb->truesize += skb->data_len;
+
+ vmxnet3_rx_csum(adapter, skb,
+ (union Vmxnet3_GenericDesc *)rcd);
+ skb->protocol = eth_type_trans(skb, adapter->netdev);
+
+ if (unlikely(adapter->vlan_grp && rcd->ts)) {
+ vlan_hwaccel_receive_skb(skb,
+ adapter->vlan_grp, rcd->tci);
+ } else {
+ netif_receive_skb(skb);
+ }
+
+ adapter->netdev->last_rx = jiffies;
+ ctx->skb = NULL;
+ }
+
+rcd_done:
+ /* device may skip some rx descs */
+ rq->rx_ring[ring_idx].next2comp = idx;
+ VMXNET3_INC_RING_IDX_ONLY(rq->rx_ring[ring_idx].next2comp,
+ rq->rx_ring[ring_idx].size);
+
+ /* refill rx buffers frequently to avoid starving the h/w */
+ num_to_alloc = vmxnet3_cmd_ring_desc_avail(rq->rx_ring +
+ ring_idx);
+ if (unlikely(num_to_alloc > VMXNET3_RX_ALLOC_THRESHOLD(rq,
+ ring_idx, adapter))) {
+ vmxnet3_rq_alloc_rx_buf(rq, ring_idx, num_to_alloc,
+ adapter);
+
+ /* if needed, update the register */
+ if (unlikely(rq->shared->updateRxProd)) {
+ VMXNET3_WRITE_BAR0_REG(adapter,
+ rxprod_reg[ring_idx] + rq->qid * 8,
+ rq->rx_ring[ring_idx].next2fill);
+ rq->uncommitted[ring_idx] = 0;
+ }
+ }
+
+ vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring);
+ rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
+ }
+
+ return num_rxd;
+}
+
+
+static void
+vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter)
+{
+ u32 i, ring_idx;
+ struct Vmxnet3_RxDesc *rxd;
+
+ for (ring_idx = 0; ring_idx < 2; ring_idx++) {
+ for (i = 0; i < rq->rx_ring[ring_idx].size; i++) {
+ rxd = &rq->rx_ring[ring_idx].base[i].rxd;
+
+ if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD &&
+ rq->buf_info[ring_idx][i].skb) {
+ pci_unmap_single(adapter->pdev, rxd->addr,
+ rxd->len, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(rq->buf_info[ring_idx][i].skb);
+ rq->buf_info[ring_idx][i].skb = NULL;
+ } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY &&
+ rq->buf_info[ring_idx][i].page) {
+ pci_unmap_page(adapter->pdev, rxd->addr,
+ rxd->len, PCI_DMA_FROMDEVICE);
+ put_page(rq->buf_info[ring_idx][i].page);
+ rq->buf_info[ring_idx][i].page = NULL;
+ }
+ }
+
+ rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN;
+ rq->rx_ring[ring_idx].next2fill =
+ rq->rx_ring[ring_idx].next2comp = 0;
+ rq->uncommitted[ring_idx] = 0;
+ }
+
+ rq->comp_ring.gen = VMXNET3_INIT_GEN;
+ rq->comp_ring.next2proc = 0;
+}
+
+
+void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter)
+{
+ int i;
+ int j;
+
+ /* all rx buffers must have already been freed */
+ for (i = 0; i < 2; i++) {
+ if (rq->buf_info[i]) {
+ for (j = 0; j < rq->rx_ring[i].size; j++)
+ BUG_ON(rq->buf_info[i][j].page != NULL);
+ }
+ }
+
+
+ kfree(rq->buf_info[0]);
+
+ for (i = 0; i < 2; i++) {
+ if (rq->rx_ring[i].base) {
+ pci_free_consistent(adapter->pdev, rq->rx_ring[i].size
+ * sizeof(struct Vmxnet3_RxDesc),
+ rq->rx_ring[i].base,
+ rq->rx_ring[i].basePA);
+ rq->rx_ring[i].base = NULL;
+ }
+ rq->buf_info[i] = NULL;
+ }
+
+ if (rq->comp_ring.base) {
+ pci_free_consistent(adapter->pdev, rq->comp_ring.size *
+ sizeof(struct Vmxnet3_RxCompDesc),
+ rq->comp_ring.base, rq->comp_ring.basePA);
+ rq->comp_ring.base = NULL;
+ }
+}
+
+
+static int
+vmxnet3_rq_init(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter)
+{
+ int i;
+
+ /* initialize buf_info */
+ for (i = 0; i < rq->rx_ring[0].size; i++) {
+
+ /* 1st buf for a pkt is skbuff */
+ if (i % adapter->rx_buf_per_pkt == 0) {
+ rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB;
+ rq->buf_info[0][i].len = adapter->skb_buf_size;
+ } else { /* subsequent bufs for a pkt is frag */
+ rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE;
+ rq->buf_info[0][i].len = PAGE_SIZE;
+ }
+ }
+ for (i = 0; i < rq->rx_ring[1].size; i++) {
+ rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE;
+ rq->buf_info[1][i].len = PAGE_SIZE;
+ }
+
+ /* reset internal state and allocate buffers for both rings */
+ for (i = 0; i < 2; i++) {
+ rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0;
+ rq->uncommitted[i] = 0;
+
+ memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size *
+ sizeof(struct Vmxnet3_RxDesc));
+ rq->rx_ring[i].gen = VMXNET3_INIT_GEN;
+ }
+ if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1,
+ adapter) == 0) {
+ /* at least has 1 rx buffer for the 1st ring */
+ return -ENOMEM;
+ }
+ vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter);
+
+ /* reset the comp ring */
+ rq->comp_ring.next2proc = 0;
+ memset(rq->comp_ring.base, 0, rq->comp_ring.size *
+ sizeof(struct Vmxnet3_RxCompDesc));
+ rq->comp_ring.gen = VMXNET3_INIT_GEN;
+
+ /* reset rxctx */
+ rq->rx_ctx.skb = NULL;
+
+ /* stats are not reset */
+ return 0;
+}
+
+
+static int
+vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter)
+{
+ int i;
+ size_t sz;
+ struct vmxnet3_rx_buf_info *bi;
+
+ for (i = 0; i < 2; i++) {
+
+ sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc);
+ rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz,
+ &rq->rx_ring[i].basePA);
+ if (!rq->rx_ring[i].base) {
+ printk(KERN_ERR "%s: failed to allocate rx ring %d\n",
+ adapter->netdev->name, i);
+ goto err;
+ }
+ }
+
+ sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc);
+ rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz,
+ &rq->comp_ring.basePA);
+ if (!rq->comp_ring.base) {
+ printk(KERN_ERR "%s: failed to allocate rx comp ring\n",
+ adapter->netdev->name);
+ goto err;
+ }
+
+ sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size +
+ rq->rx_ring[1].size);
+ bi = kmalloc(sz, GFP_KERNEL);
+ if (!bi) {
+ printk(KERN_ERR "%s: failed to allocate rx bufinfo\n",
+ adapter->netdev->name);
+ goto err;
+ }
+ memset(bi, 0, sz);
+ rq->buf_info[0] = bi;
+ rq->buf_info[1] = bi + rq->rx_ring[0].size;
+
+ return 0;
+
+err:
+ vmxnet3_rq_destroy(rq, adapter);
+ return -ENOMEM;
+}
+
+
+static void
+vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget, int *txd_done,
+ int *rxd_done)
+{
+ if (unlikely(adapter->shared->ecr))
+ vmxnet3_process_events(adapter);
+
+ *txd_done = vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
+ *rxd_done = vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
+}
+
+
+static int
+vmxnet3_poll(struct napi_struct *napi, int budget)
+{
+ struct vmxnet3_adapter *adapter = container_of(napi,
+ struct vmxnet3_adapter, napi);
+ int rxd_done, txd_done;
+
+ vmxnet3_do_poll(adapter, budget, &txd_done, &rxd_done);
+
+ if (rxd_done < budget) {
+ napi_complete(napi);
+ vmxnet3_enable_intr(adapter, 0);
+ }
+ return rxd_done;
+}
+
+
+/* Interrupt handler for vmxnet3 */
+static irqreturn_t
+vmxnet3_intr(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct vmxnet3_adapter *adapter = netdev_priv(dev);
+
+ if (unlikely(adapter->intr.type == VMXNET3_IT_INTX)) {
+ u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
+ if (unlikely(icr == 0))
+ /* not ours */
+ return IRQ_NONE;
+ }
+
+
+ /* disable intr if needed */
+ if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
+ vmxnet3_disable_intr(adapter, 0);
+
+ napi_schedule(&adapter->napi);
+
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+
+
+/* netpoll callback. */
+static void
+vmxnet3_netpoll(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ int irq;
+
+ if (adapter->intr.type == VMXNET3_IT_MSIX)
+ irq = adapter->intr.msix_entries[0].vector;
+ else
+ irq = adapter->pdev->irq;
+
+ disable_irq(irq);
+ vmxnet3_intr(irq, netdev);
+ enable_irq(irq);
+}
+#endif
+
+static int
+vmxnet3_request_irqs(struct vmxnet3_adapter *adapter)
+{
+ int err;
+
+ if (adapter->intr.type == VMXNET3_IT_MSIX) {
+ /* we only use 1 MSI-X vector */
+ err = request_irq(adapter->intr.msix_entries[0].vector,
+ vmxnet3_intr, 0, adapter->netdev->name,
+ adapter->netdev);
+ } else if (adapter->intr.type == VMXNET3_IT_MSI) {
+ err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0,
+ adapter->netdev->name, adapter->netdev);
+ } else {
+ err = request_irq(adapter->pdev->irq, vmxnet3_intr,
+ IRQF_SHARED, adapter->netdev->name,
+ adapter->netdev);
+ }
+
+ if (err)
+ printk(KERN_ERR "Failed to request irq %s (intr type:%d), error"
+ ":%d\n", adapter->netdev->name, adapter->intr.type, err);
+
+
+ if (!err) {
+ int i;
+ /* init our intr settings */
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ adapter->intr.mod_levels[i] = UPT1_IML_ADAPTIVE;
+
+ /* next setup intr index for all intr sources */
+ adapter->tx_queue.comp_ring.intr_idx = 0;
+ adapter->rx_queue.comp_ring.intr_idx = 0;
+ adapter->intr.event_intr_idx = 0;
+
+ printk(KERN_INFO "%s: intr type %u, mode %u, %u vectors "
+ "allocated\n", adapter->netdev->name, adapter->intr.type,
+ adapter->intr.mask_mode, adapter->intr.num_intrs);
+ }
+
+ return err;
+}
+
+
+static void
+vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
+{
+ BUG_ON(adapter->intr.type == VMXNET3_IT_AUTO ||
+ adapter->intr.num_intrs <= 0);
+
+ switch (adapter->intr.type) {
+ case VMXNET3_IT_MSIX:
+ {
+ int i;
+
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ free_irq(adapter->intr.msix_entries[i].vector,
+ adapter->netdev);
+ break;
+ }
+ case VMXNET3_IT_MSI:
+ free_irq(adapter->pdev->irq, adapter->netdev);
+ break;
+ case VMXNET3_IT_INTX:
+ free_irq(adapter->pdev->irq, adapter->netdev);
+ break;
+ default:
+ BUG_ON(true);
+ }
+}
+
+
+static void
+vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ struct Vmxnet3_DriverShared *shared = adapter->shared;
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+
+ if (grp) {
+ /* add vlan rx stripping. */
+ if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) {
+ int i;
+ struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
+ adapter->vlan_grp = grp;
+
+ /* update FEATURES to device */
+ devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_FEATURE);
+ /*
+ * Clear entire vfTable; then enable untagged pkts.
+ * Note: setting one entry in vfTable to non-zero turns
+ * on VLAN rx filtering.
+ */
+ for (i = 0; i < VMXNET3_VFT_SIZE; i++)
+ vfTable[i] = 0;
+
+ VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+ } else {
+ printk(KERN_ERR "%s: vlan_rx_register when device has "
+ "no NETIF_F_HW_VLAN_RX\n", netdev->name);
+ }
+ } else {
+ /* remove vlan rx stripping. */
+ struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
+ adapter->vlan_grp = NULL;
+
+ if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) {
+ int i;
+
+ for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
+ /* clear entire vfTable; this also disables
+ * VLAN rx filtering
+ */
+ vfTable[i] = 0;
+ }
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+
+ /* update FEATURES to device */
+ devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_FEATURE);
+ }
+ }
+}
+
+
+static void
+vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter)
+{
+ if (adapter->vlan_grp) {
+ u16 vid;
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+ bool activeVlan = false;
+
+ for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
+ if (vlan_group_get_device(adapter->vlan_grp, vid)) {
+ VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
+ activeVlan = true;
+ }
+ }
+ if (activeVlan) {
+ /* continue to allow untagged pkts */
+ VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
+ }
+ }
+}
+
+
+static void
+vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+
+ VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+}
+
+
+static void
+vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+
+ VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+}
+
+
+static u8 *
+vmxnet3_copy_mc(struct net_device *netdev)
+{
+ u8 *buf = NULL;
+ u32 sz = netdev->mc_count * ETH_ALEN;
+
+ /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */
+ if (sz <= 0xffff) {
+ /* We may be called with BH disabled */
+ buf = kmalloc(sz, GFP_ATOMIC);
+ if (buf) {
+ int i;
+ struct dev_mc_list *mc = netdev->mc_list;
+
+ for (i = 0; i < netdev->mc_count; i++) {
+ BUG_ON(!mc);
+ memcpy(buf + i * ETH_ALEN, mc->dmi_addr,
+ ETH_ALEN);
+ mc = mc->next;
+ }
+ }
+ }
+ return buf;
+}
+
+
+static void
+vmxnet3_set_mc(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ struct Vmxnet3_RxFilterConf *rxConf =
+ &adapter->shared->devRead.rxFilterConf;
+ u8 *new_table = NULL;
+ u32 new_mode = VMXNET3_RXM_UCAST;
+
+ if (netdev->flags & IFF_PROMISC)
+ new_mode |= VMXNET3_RXM_PROMISC;
+
+ if (netdev->flags & IFF_BROADCAST)
+ new_mode |= VMXNET3_RXM_BCAST;
+
+ if (netdev->flags & IFF_ALLMULTI)
+ new_mode |= VMXNET3_RXM_ALL_MULTI;
+ else
+ if (netdev->mc_count > 0) {
+ new_table = vmxnet3_copy_mc(netdev);
+ if (new_table) {
+ new_mode |= VMXNET3_RXM_MCAST;
+ rxConf->mfTableLen = netdev->mc_count *
+ ETH_ALEN;
+ rxConf->mfTablePA = virt_to_phys(new_table);
+ } else {
+ printk(KERN_INFO "%s: failed to copy mcast list"
+ ", setting ALL_MULTI\n", netdev->name);
+ new_mode |= VMXNET3_RXM_ALL_MULTI;
+ }
+ }
+
+
+ if (!(new_mode & VMXNET3_RXM_MCAST)) {
+ rxConf->mfTableLen = 0;
+ rxConf->mfTablePA = 0;
+ }
+
+ if (new_mode != rxConf->rxMode) {
+ rxConf->rxMode = new_mode;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_RX_MODE);
+ }
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_MAC_FILTERS);
+
+ kfree(new_table);
+}
+
+
+/*
+ * Set up driver_shared based on settings in adapter.
+ */
+
+static void
+vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
+{
+ struct Vmxnet3_DriverShared *shared = adapter->shared;
+ struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
+ struct Vmxnet3_TxQueueConf *tqc;
+ struct Vmxnet3_RxQueueConf *rqc;
+ int i;
+
+ memset(shared, 0, sizeof(*shared));
+
+ /* driver settings */
+ shared->magic = VMXNET3_REV1_MAGIC;
+ devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
+ devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ?
+ VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64);
+ devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX;
+ devRead->misc.driverInfo.vmxnet3RevSpt = 1;
+ devRead->misc.driverInfo.uptVerSpt = 1;
+
+ devRead->misc.ddPA = virt_to_phys(adapter);
+ devRead->misc.ddLen = sizeof(struct vmxnet3_adapter);
+
+ /* set up feature flags */
+ if (adapter->rxcsum)
+ devRead->misc.uptFeatures |= UPT1_F_RXCSUM;
+
+ if (adapter->lro) {
+ devRead->misc.uptFeatures |= UPT1_F_LRO;
+ devRead->misc.maxNumRxSG = 1 + MAX_SKB_FRAGS;
+ }
+ if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX)
+ && adapter->vlan_grp) {
+ devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
+ }
+
+ devRead->misc.mtu = adapter->netdev->mtu;
+ devRead->misc.queueDescPA = adapter->queue_desc_pa;
+ devRead->misc.queueDescLen = sizeof(struct Vmxnet3_TxQueueDesc) +
+ sizeof(struct Vmxnet3_RxQueueDesc);
+
+ /* tx queue settings */
+ BUG_ON(adapter->tx_queue.tx_ring.base == NULL);
+
+ devRead->misc.numTxQueues = 1;
+ tqc = &adapter->tqd_start->conf;
+ tqc->txRingBasePA = adapter->tx_queue.tx_ring.basePA;
+ tqc->dataRingBasePA = adapter->tx_queue.data_ring.basePA;
+ tqc->compRingBasePA = adapter->tx_queue.comp_ring.basePA;
+ tqc->ddPA = virt_to_phys(adapter->tx_queue.buf_info);
+ tqc->txRingSize = adapter->tx_queue.tx_ring.size;
+ tqc->dataRingSize = adapter->tx_queue.data_ring.size;
+ tqc->compRingSize = adapter->tx_queue.comp_ring.size;
+ tqc->ddLen = sizeof(struct vmxnet3_tx_buf_info) *
+ tqc->txRingSize;
+ tqc->intrIdx = adapter->tx_queue.comp_ring.intr_idx;
+
+ /* rx queue settings */
+ devRead->misc.numRxQueues = 1;
+ rqc = &adapter->rqd_start->conf;
+ rqc->rxRingBasePA[0] = adapter->rx_queue.rx_ring[0].basePA;
+ rqc->rxRingBasePA[1] = adapter->rx_queue.rx_ring[1].basePA;
+ rqc->compRingBasePA = adapter->rx_queue.comp_ring.basePA;
+ rqc->ddPA = virt_to_phys(adapter->rx_queue.buf_info);
+ rqc->rxRingSize[0] = adapter->rx_queue.rx_ring[0].size;
+ rqc->rxRingSize[1] = adapter->rx_queue.rx_ring[1].size;
+ rqc->compRingSize = adapter->rx_queue.comp_ring.size;
+ rqc->ddLen = sizeof(struct vmxnet3_rx_buf_info) *
+ (rqc->rxRingSize[0] + rqc->rxRingSize[1]);
+ rqc->intrIdx = adapter->rx_queue.comp_ring.intr_idx;
+
+ /* intr settings */
+ devRead->intrConf.autoMask = adapter->intr.mask_mode ==
+ VMXNET3_IMM_AUTO;
+ devRead->intrConf.numIntrs = adapter->intr.num_intrs;
+ for (i = 0; i < adapter->intr.num_intrs; i++)
+ devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i];
+
+ devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx;
+
+ /* rx filter settings */
+ devRead->rxFilterConf.rxMode = 0;
+ vmxnet3_restore_vlan(adapter);
+ /* the rest are already zeroed */
+}
+
+
+int
+vmxnet3_activate_dev(struct vmxnet3_adapter *adapter)
+{
+ int err;
+ u32 ret;
+
+ dprintk(KERN_ERR "%s: skb_buf_size %d, rx_buf_per_pkt %d, ring sizes"
+ " %u %u %u\n", adapter->netdev->name, adapter->skb_buf_size,
+ adapter->rx_buf_per_pkt, adapter->tx_queue.tx_ring.size,
+ adapter->rx_queue.rx_ring[0].size,
+ adapter->rx_queue.rx_ring[1].size);
+
+ vmxnet3_tq_init(&adapter->tx_queue, adapter);
+ err = vmxnet3_rq_init(&adapter->rx_queue, adapter);
+ if (err) {
+ printk(KERN_ERR "Failed to init rx queue for %s: error %d\n",
+ adapter->netdev->name, err);
+ goto rq_err;
+ }
+
+ err = vmxnet3_request_irqs(adapter);
+ if (err) {
+ printk(KERN_ERR "Failed to setup irq for %s: error %d\n",
+ adapter->netdev->name, err);
+ goto irq_err;
+ }
+
+ vmxnet3_setup_driver_shared(adapter);
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL,
+ VMXNET3_GET_ADDR_LO(adapter->shared_pa));
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH,
+ VMXNET3_GET_ADDR_HI(adapter->shared_pa));
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_ACTIVATE_DEV);
+ ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to activate dev %s: error %u\n",
+ adapter->netdev->name, ret);
+ err = -EINVAL;
+ goto activate_err;
+ }
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD,
+ adapter->rx_queue.rx_ring[0].next2fill);
+ VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD2,
+ adapter->rx_queue.rx_ring[1].next2fill);
+
+ /* Apply the rx filter settins last. */
+ vmxnet3_set_mc(adapter->netdev);
+
+ /*
+ * Check link state when first activating device. It will start the
+ * tx queue if the link is up.
+ */
+ vmxnet3_check_link(adapter);
+
+ napi_enable(&adapter->napi);
+ vmxnet3_enable_all_intrs(adapter);
+ clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+ return 0;
+
+activate_err:
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0);
+ vmxnet3_free_irqs(adapter);
+irq_err:
+rq_err:
+ /* free up buffers we allocated */
+ vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
+ return err;
+}
+
+
+void
+vmxnet3_reset_dev(struct vmxnet3_adapter *adapter)
+{
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
+}
+
+
+int
+vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter)
+{
+ if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state))
+ return 0;
+
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_QUIESCE_DEV);
+ vmxnet3_disable_all_intrs(adapter);
+
+ napi_disable(&adapter->napi);
+ netif_tx_disable(adapter->netdev);
+ adapter->link_speed = 0;
+ netif_carrier_off(adapter->netdev);
+
+ vmxnet3_tq_cleanup(&adapter->tx_queue, adapter);
+ vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
+ vmxnet3_free_irqs(adapter);
+ return 0;
+}
+
+
+static void
+vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
+{
+ u32 tmp;
+
+ tmp = *(u32 *)mac;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp);
+
+ tmp = (mac[5] << 8) | mac[4];
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp);
+}
+
+
+static int
+vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
+{
+ struct sockaddr *addr = p;
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+ vmxnet3_write_mac_addr(adapter, addr->sa_data);
+
+ return 0;
+}
+
+
+/* ==================== initialization and cleanup routines ============ */
+
+static int
+vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64)
+{
+ int err;
+ unsigned long mmio_start, mmio_len;
+ struct pci_dev *pdev = adapter->pdev;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ printk(KERN_ERR "Failed to enable adapter %s: error %d\n",
+ pci_name(pdev), err);
+ return err;
+ }
+
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
+ if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
+ printk(KERN_ERR "pci_set_consistent_dma_mask failed "
+ "for adapter %s\n", pci_name(pdev));
+ err = -EIO;
+ goto err_set_mask;
+ }
+ *dma64 = true;
+ } else {
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
+ printk(KERN_ERR "pci_set_dma_mask failed for adapter "
+ "%s\n", pci_name(pdev));
+ err = -EIO;
+ goto err_set_mask;
+ }
+ *dma64 = false;
+ }
+
+ err = pci_request_selected_regions(pdev, (1 << 2) - 1,
+ vmxnet3_driver_name);
+ if (err) {
+ printk(KERN_ERR "Failed to request region for adapter %s: "
+ "error %d\n", pci_name(pdev), err);
+ goto err_set_mask;
+ }
+
+ pci_set_master(pdev);
+
+ mmio_start = pci_resource_start(pdev, 0);
+ mmio_len = pci_resource_len(pdev, 0);
+ adapter->hw_addr0 = ioremap(mmio_start, mmio_len);
+ if (!adapter->hw_addr0) {
+ printk(KERN_ERR "Failed to map bar0 for adapter %s\n",
+ pci_name(pdev));
+ err = -EIO;
+ goto err_ioremap;
+ }
+
+ mmio_start = pci_resource_start(pdev, 1);
+ mmio_len = pci_resource_len(pdev, 1);
+ adapter->hw_addr1 = ioremap(mmio_start, mmio_len);
+ if (!adapter->hw_addr1) {
+ printk(KERN_ERR "Failed to map bar1 for adapter %s\n",
+ pci_name(pdev));
+ err = -EIO;
+ goto err_bar1;
+ }
+ return 0;
+
+err_bar1:
+ iounmap(adapter->hw_addr0);
+err_ioremap:
+ pci_release_selected_regions(pdev, (1 << 2) - 1);
+err_set_mask:
+ pci_disable_device(pdev);
+ return err;
+}
+
+
+static void
+vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter)
+{
+ BUG_ON(!adapter->pdev);
+
+ iounmap(adapter->hw_addr0);
+ iounmap(adapter->hw_addr1);
+ pci_release_selected_regions(adapter->pdev, (1 << 2) - 1);
+ pci_disable_device(adapter->pdev);
+}
+
+
+static void
+vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter)
+{
+ size_t sz;
+
+ if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE -
+ VMXNET3_MAX_ETH_HDR_SIZE) {
+ adapter->skb_buf_size = adapter->netdev->mtu +
+ VMXNET3_MAX_ETH_HDR_SIZE;
+ if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE)
+ adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE;
+
+ adapter->rx_buf_per_pkt = 1;
+ } else {
+ adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE;
+ sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE +
+ VMXNET3_MAX_ETH_HDR_SIZE;
+ adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE;
+ }
+
+ /*
+ * for simplicity, force the ring0 size to be a multiple of
+ * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
+ */
+ sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
+ adapter->rx_queue.rx_ring[0].size = (adapter->rx_queue.rx_ring[0].size +
+ sz - 1) / sz * sz;
+ adapter->rx_queue.rx_ring[0].size = min_t(u32,
+ adapter->rx_queue.rx_ring[0].size,
+ VMXNET3_RX_RING_MAX_SIZE / sz * sz);
+}
+
+
+int
+vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size,
+ u32 rx_ring_size, u32 rx_ring2_size)
+{
+ int err;
+
+ adapter->tx_queue.tx_ring.size = tx_ring_size;
+ adapter->tx_queue.data_ring.size = tx_ring_size;
+ adapter->tx_queue.comp_ring.size = tx_ring_size;
+ adapter->tx_queue.shared = &adapter->tqd_start->ctrl;
+ adapter->tx_queue.stopped = true;
+ err = vmxnet3_tq_create(&adapter->tx_queue, adapter);
+ if (err)
+ return err;
+
+ adapter->rx_queue.rx_ring[0].size = rx_ring_size;
+ adapter->rx_queue.rx_ring[1].size = rx_ring2_size;
+ vmxnet3_adjust_rx_ring_size(adapter);
+ adapter->rx_queue.comp_ring.size = adapter->rx_queue.rx_ring[0].size +
+ adapter->rx_queue.rx_ring[1].size;
+ adapter->rx_queue.qid = 0;
+ adapter->rx_queue.qid2 = 1;
+ adapter->rx_queue.shared = &adapter->rqd_start->ctrl;
+ err = vmxnet3_rq_create(&adapter->rx_queue, adapter);
+ if (err)
+ vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
+
+ return err;
+}
+
+static int
+vmxnet3_open(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter;
+ int err;
+
+ adapter = netdev_priv(netdev);
+
+ spin_lock_init(&adapter->tx_queue.tx_lock);
+
+ err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE,
+ VMXNET3_DEF_RX_RING_SIZE,
+ VMXNET3_DEF_RX_RING_SIZE);
+ if (err)
+ goto queue_err;
+
+ err = vmxnet3_activate_dev(adapter);
+ if (err)
+ goto activate_err;
+
+ return 0;
+
+activate_err:
+ vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
+ vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
+queue_err:
+ return err;
+}
+
+
+static int
+vmxnet3_close(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ /*
+ * Reset_work may be in the middle of resetting the device, wait for its
+ * completion.
+ */
+ while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+ msleep(1);
+
+ vmxnet3_quiesce_dev(adapter);
+
+ vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
+ vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
+
+ clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+
+
+ return 0;
+}
+
+
+void
+vmxnet3_force_close(struct vmxnet3_adapter *adapter)
+{
+ /*
+ * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise
+ * vmxnet3_close() will deadlock.
+ */
+ BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state));
+
+ /* we need to enable NAPI, otherwise dev_close will deadlock */
+ napi_enable(&adapter->napi);
+ dev_close(adapter->netdev);
+}
+
+
+static int
+vmxnet3_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ int err = 0;
+
+ if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU)
+ return -EINVAL;
+
+ if (new_mtu > 1500 && !adapter->jumbo_frame)
+ return -EINVAL;
+
+ netdev->mtu = new_mtu;
+
+ /*
+ * Reset_work may be in the middle of resetting the device, wait for its
+ * completion.
+ */
+ while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+ msleep(1);
+
+ if (netif_running(netdev)) {
+ vmxnet3_quiesce_dev(adapter);
+ vmxnet3_reset_dev(adapter);
+
+ /* we need to re-create the rx queue based on the new mtu */
+ vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
+ vmxnet3_adjust_rx_ring_size(adapter);
+ adapter->rx_queue.comp_ring.size =
+ adapter->rx_queue.rx_ring[0].size +
+ adapter->rx_queue.rx_ring[1].size;
+ err = vmxnet3_rq_create(&adapter->rx_queue, adapter);
+ if (err) {
+ printk(KERN_ERR "%s: failed to re-create rx queue,"
+ " error %d. Closing it.\n", netdev->name, err);
+ goto out;
+ }
+
+ err = vmxnet3_activate_dev(adapter);
+ if (err) {
+ printk(KERN_ERR "%s: failed to re-activate, error %d. "
+ "Closing it\n", netdev->name, err);
+ goto out;
+ }
+ }
+
+out:
+ clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+ if (err)
+ vmxnet3_force_close(adapter);
+
+ return err;
+}
+
+
+static void
+vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ netdev->features = NETIF_F_SG |
+ NETIF_F_HW_CSUM |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX |
+ NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_TSO |
+ NETIF_F_TSO6 |
+ NETIF_F_LRO;
+
+ printk(KERN_INFO "features: sg csum vlan jf tso tsoIPv6 lro");
+
+ adapter->rxcsum = true;
+ adapter->jumbo_frame = true;
+ adapter->lro = true;
+
+ if (dma64) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ printk(" highDMA");
+ }
+
+ netdev->vlan_features = netdev->features;
+ printk("\n");
+}
+
+
+static void
+vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
+{
+ u32 tmp;
+
+ tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
+ *(u32 *)mac = tmp;
+
+ tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
+ mac[4] = tmp & 0xff;
+ mac[5] = (tmp >> 8) & 0xff;
+}
+
+
+static void
+vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
+{
+ u32 cfg;
+
+ /* intr settings */
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_GET_CONF_INTR);
+ cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
+ adapter->intr.type = cfg & 0x3;
+ adapter->intr.mask_mode = (cfg >> 2) & 0x3;
+
+ if (adapter->intr.type == VMXNET3_IT_AUTO) {
+ int err;
+
+ adapter->intr.msix_entries[0].entry = 0;
+ err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries,
+ VMXNET3_LINUX_MAX_MSIX_VECT);
+ if (!err) {
+ adapter->intr.num_intrs = 1;
+ adapter->intr.type = VMXNET3_IT_MSIX;
+ return;
+ }
+
+ err = pci_enable_msi(adapter->pdev);
+ if (!err) {
+ adapter->intr.num_intrs = 1;
+ adapter->intr.type = VMXNET3_IT_MSI;
+ return;
+ }
+ }
+
+ adapter->intr.type = VMXNET3_IT_INTX;
+
+ /* INT-X related setting */
+ adapter->intr.num_intrs = 1;
+}
+
+
+static void
+vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter)
+{
+ if (adapter->intr.type == VMXNET3_IT_MSIX)
+ pci_disable_msix(adapter->pdev);
+ else if (adapter->intr.type == VMXNET3_IT_MSI)
+ pci_disable_msi(adapter->pdev);
+ else
+ BUG_ON(adapter->intr.type != VMXNET3_IT_INTX);
+}
+
+
+static void
+vmxnet3_tx_timeout(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ adapter->tx_timeout_count++;
+
+ printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name);
+ schedule_work(&adapter->work);
+}
+
+
+static void
+vmxnet3_reset_work(struct work_struct *data)
+{
+ struct vmxnet3_adapter *adapter;
+
+ adapter = container_of(data, struct vmxnet3_adapter, work);
+
+ /* if another thread is resetting the device, no need to proceed */
+ if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+ return;
+
+ /* if the device is closed, we must leave it alone */
+ if (netif_running(adapter->netdev)) {
+ printk(KERN_INFO "%s: resetting\n", adapter->netdev->name);
+ vmxnet3_quiesce_dev(adapter);
+ vmxnet3_reset_dev(adapter);
+ vmxnet3_activate_dev(adapter);
+ } else {
+ printk(KERN_INFO "%s: already closed\n", adapter->netdev->name);
+ }
+
+ clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+}
+
+
+static int __devinit
+vmxnet3_probe_device(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ static const struct net_device_ops vmxnet3_netdev_ops = {
+ .ndo_open = vmxnet3_open,
+ .ndo_stop = vmxnet3_close,
+ .ndo_start_xmit = vmxnet3_xmit_frame,
+ .ndo_set_mac_address = vmxnet3_set_mac_addr,
+ .ndo_change_mtu = vmxnet3_change_mtu,
+ .ndo_get_stats = vmxnet3_get_stats,
+ .ndo_tx_timeout = vmxnet3_tx_timeout,
+ .ndo_set_multicast_list = vmxnet3_set_mc,
+ .ndo_vlan_rx_register = vmxnet3_vlan_rx_register,
+ .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = vmxnet3_netpoll,
+#endif
+ };
+ int err;
+ bool dma64 = false; /* stupid gcc */
+ u32 ver;
+ struct net_device *netdev;
+ struct vmxnet3_adapter *adapter;
+ u8 mac[ETH_ALEN];
+
+ netdev = alloc_etherdev(sizeof(struct vmxnet3_adapter));
+ if (!netdev) {
+ printk(KERN_ERR "Failed to alloc ethernet device for adapter "
+ "%s\n", pci_name(pdev));
+ return -ENOMEM;
+ }
+
+ pci_set_drvdata(pdev, netdev);
+ adapter = netdev_priv(netdev);
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+
+ adapter->shared = pci_alloc_consistent(adapter->pdev,
+ sizeof(struct Vmxnet3_DriverShared),
+ &adapter->shared_pa);
+ if (!adapter->shared) {
+ printk(KERN_ERR "Failed to allocate memory for %s\n",
+ pci_name(pdev));
+ err = -ENOMEM;
+ goto err_alloc_shared;
+ }
+
+ adapter->tqd_start = pci_alloc_consistent(adapter->pdev,
+ sizeof(struct Vmxnet3_TxQueueDesc) +
+ sizeof(struct Vmxnet3_RxQueueDesc),
+ &adapter->queue_desc_pa);
+
+ if (!adapter->tqd_start) {
+ printk(KERN_ERR "Failed to allocate memory for %s\n",
+ pci_name(pdev));
+ err = -ENOMEM;
+ goto err_alloc_queue_desc;
+ }
+ adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start
+ + 1);
+
+ adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL);
+ if (adapter->pm_conf == NULL) {
+ printk(KERN_ERR "Failed to allocate memory for %s\n",
+ pci_name(pdev));
+ err = -ENOMEM;
+ goto err_alloc_pm;
+ }
+
+ err = vmxnet3_alloc_pci_resources(adapter, &dma64);
+ if (err < 0)
+ goto err_alloc_pci;
+
+ ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
+ if (ver & 1) {
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1);
+ } else {
+ printk(KERN_ERR "Incompatible h/w version (0x%x) for adapter"
+ " %s\n", ver, pci_name(pdev));
+ err = -EBUSY;
+ goto err_ver;
+ }
+
+ ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
+ if (ver & 1) {
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1);
+ } else {
+ printk(KERN_ERR "Incompatible upt version (0x%x) for "
+ "adapter %s\n", ver, pci_name(pdev));
+ err = -EBUSY;
+ goto err_ver;
+ }
+
+ vmxnet3_declare_features(adapter, dma64);
+
+ adapter->dev_number = atomic_read(&devices_found);
+ vmxnet3_alloc_intr_resources(adapter);
+
+ vmxnet3_read_mac_addr(adapter, mac);
+ memcpy(netdev->dev_addr, mac, netdev->addr_len);
+
+ netdev->netdev_ops = &vmxnet3_netdev_ops;
+ netdev->watchdog_timeo = 5 * HZ;
+ vmxnet3_set_ethtool_ops(netdev);
+
+ INIT_WORK(&adapter->work, vmxnet3_reset_work);
+
+ netif_napi_add(netdev, &adapter->napi, vmxnet3_poll, 64);
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+ err = register_netdev(netdev);
+
+ if (err) {
+ printk(KERN_ERR "Failed to register adapter %s\n",
+ pci_name(pdev));
+ goto err_register;
+ }
+
+ set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
+ atomic_inc(&devices_found);
+ return 0;
+
+err_register:
+ vmxnet3_free_intr_resources(adapter);
+err_ver:
+ vmxnet3_free_pci_resources(adapter);
+err_alloc_pci:
+ kfree(adapter->pm_conf);
+err_alloc_pm:
+ pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) +
+ sizeof(struct Vmxnet3_RxQueueDesc),
+ adapter->tqd_start, adapter->queue_desc_pa);
+err_alloc_queue_desc:
+ pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
+ adapter->shared, adapter->shared_pa);
+err_alloc_shared:
+ pci_set_drvdata(pdev, NULL);
+ free_netdev(netdev);
+ return err;
+}
+
+
+static void __devexit
+vmxnet3_remove_device(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ flush_scheduled_work();
+
+ unregister_netdev(netdev);
+
+ vmxnet3_free_intr_resources(adapter);
+ vmxnet3_free_pci_resources(adapter);
+ kfree(adapter->pm_conf);
+ pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) +
+ sizeof(struct Vmxnet3_RxQueueDesc),
+ adapter->tqd_start, adapter->queue_desc_pa);
+ pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
+ adapter->shared, adapter->shared_pa);
+ free_netdev(netdev);
+}
+
+
+#ifdef CONFIG_PM
+
+static int
+vmxnet3_suspend(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ struct Vmxnet3_PMConf *pmConf;
+ struct ethhdr *ehdr;
+ struct arphdr *ahdr;
+ u8 *arpreq;
+ struct in_device *in_dev;
+ struct in_ifaddr *ifa;
+ int i = 0;
+
+ if (!netif_running(netdev))
+ return 0;
+
+ vmxnet3_disable_all_intrs(adapter);
+
+ netif_device_detach(netdev);
+ netif_stop_queue(netdev);
+
+ /* Create wake-up filters. */
+ pmConf = adapter->pm_conf;
+ memset(pmConf, 0, sizeof(*pmConf));
+
+ if (adapter->wol & WAKE_UCAST) {
+ pmConf->filters[i].patternSize = ETH_ALEN;
+ pmConf->filters[i].maskSize = 1;
+ memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN);
+ pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */
+
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
+ i++;
+ }
+
+ if (adapter->wol & WAKE_ARP) {
+ in_dev = in_dev_get(netdev);
+ if (!in_dev)
+ goto skip_arp;
+
+ ifa = (struct in_ifaddr *)in_dev->ifa_list;
+ if (!ifa)
+ goto skip_arp;
+
+ pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/
+ sizeof(struct arphdr) + /* ARP header */
+ 2 * ETH_ALEN + /* 2 Ethernet addresses*/
+ 2 * sizeof(u32); /*2 IPv4 addresses */
+ pmConf->filters[i].maskSize =
+ (pmConf->filters[i].patternSize - 1) / 8 + 1;
+
+ /* ETH_P_ARP in Ethernet header. */
+ ehdr = (struct ethhdr *)pmConf->filters[i].pattern;
+ ehdr->h_proto = htons(ETH_P_ARP);
+
+ /* ARPOP_REQUEST in ARP header. */
+ ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN];
+ ahdr->ar_op = htons(ARPOP_REQUEST);
+ arpreq = (u8 *)(ahdr + 1);
+
+ /* The Unicast IPv4 address in 'tip' field. */
+ arpreq += 2 * ETH_ALEN + sizeof(u32);
+ *(u32 *)arpreq = ifa->ifa_address;
+
+ /* The mask for the relevant bits. */
+ pmConf->filters[i].mask[0] = 0x00;
+ pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */
+ pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */
+ pmConf->filters[i].mask[3] = 0x00;
+ pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */
+ pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */
+ in_dev_put(in_dev);
+
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
+ i++;
+ }
+
+skip_arp:
+ if (adapter->wol & WAKE_MAGIC)
+ pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
+
+ pmConf->numFilters = i;
+
+ adapter->shared->devRead.pmConfDesc.confVer = 1;
+ adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf);
+ adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf);
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_PMCFG);
+
+ pci_save_state(pdev);
+ pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND),
+ adapter->wol);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND));
+
+ return 0;
+}
+
+
+static int
+vmxnet3_resume(struct device *device)
+{
+ int err;
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ struct Vmxnet3_PMConf *pmConf;
+
+ if (!netif_running(netdev))
+ return 0;
+
+ /* Destroy wake-up filters. */
+ pmConf = adapter->pm_conf;
+ memset(pmConf, 0, sizeof(*pmConf));
+
+ adapter->shared->devRead.pmConfDesc.confVer = 1;
+ adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf);
+ adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf);
+
+ netif_device_attach(netdev);
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ err = pci_enable_device_mem(pdev);
+ if (err != 0)
+ return err;
+
+ pci_enable_wake(pdev, PCI_D0, 0);
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_PMCFG);
+ vmxnet3_enable_all_intrs(adapter);
+
+ return 0;
+}
+
+static struct dev_pm_ops vmxnet3_pm_ops = {
+ .suspend = vmxnet3_suspend,
+ .resume = vmxnet3_resume,
+};
+#endif
+
+static struct pci_driver vmxnet3_driver = {
+ .name = vmxnet3_driver_name,
+ .id_table = vmxnet3_pciid_table,
+ .probe = vmxnet3_probe_device,
+ .remove = __devexit_p(vmxnet3_remove_device),
+#ifdef CONFIG_PM
+ .driver.pm = &vmxnet3_pm_ops,
+#endif
+};
+
+
+static int __init
+vmxnet3_init_module(void)
+{
+ printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC,
+ VMXNET3_DRIVER_VERSION_REPORT);
+ return pci_register_driver(&vmxnet3_driver);
+}
+
+module_init(vmxnet3_init_module);
+
+
+static void
+vmxnet3_exit_module(void)
+{
+ pci_unregister_driver(&vmxnet3_driver);
+}
+
+module_exit(vmxnet3_exit_module);
+
+MODULE_AUTHOR("VMware, Inc.");
+MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC);
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING);
diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
new file mode 100644
index 0000000..c2c15e4
--- /dev/null
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -0,0 +1,566 @@
+/*
+ * Linux driver for VMware's vmxnet3 ethernet NIC.
+ *
+ * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License and no later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Maintained by: Shreyas Bhatewara <[email protected]>
+ *
+ */
+
+
+#include "vmxnet3_int.h"
+
+struct vmxnet3_stat_desc {
+ char desc[ETH_GSTRING_LEN];
+ int offset;
+};
+
+
+static u32
+vmxnet3_get_rx_csum(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ return adapter->rxcsum;
+}
+
+
+static int
+vmxnet3_set_rx_csum(struct net_device *netdev, u32 val)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ if (adapter->rxcsum != val) {
+ adapter->rxcsum = val;
+ if (netif_running(netdev)) {
+ if (val)
+ adapter->shared->devRead.misc.uptFeatures |=
+ UPT1_F_RXCSUM;
+ else
+ adapter->shared->devRead.misc.uptFeatures &=
+ ~UPT1_F_RXCSUM;
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_FEATURE);
+ }
+ }
+ return 0;
+}
+
+
+/* per tq stats maintained by the device */
+static const struct vmxnet3_stat_desc
+vmxnet3_tq_dev_stats[] = {
+ /* description, offset */
+ { "TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
+ { "TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
+ { "ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
+ { "ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
+ { "mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
+ { "mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
+ { "bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
+ { "bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
+ { "pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
+ { "pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
+};
+
+/* per tq stats maintained by the driver */
+static const struct vmxnet3_stat_desc
+vmxnet3_tq_driver_stats[] = {
+ /* description, offset */
+ {"drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
+ drop_total) },
+ { " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
+ drop_too_many_frags) },
+ { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
+ drop_oversized_hdr) },
+ { " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
+ drop_hdr_inspect_err) },
+ { " tso", offsetof(struct vmxnet3_tq_driver_stats,
+ drop_tso) },
+ { "ring full", offsetof(struct vmxnet3_tq_driver_stats,
+ tx_ring_full) },
+ { "pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
+ linearized) },
+ { "hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
+ copy_skb_header) },
+ { "giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
+ oversized_hdr) },
+};
+
+/* per rq stats maintained by the device */
+static const struct vmxnet3_stat_desc
+vmxnet3_rq_dev_stats[] = {
+ { "LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
+ { "LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
+ { "ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
+ { "ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
+ { "mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
+ { "mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
+ { "bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
+ { "bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
+ { "pkts rx out of buf", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
+ { "pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
+};
+
+/* per rq stats maintained by the driver */
+static const struct vmxnet3_stat_desc
+vmxnet3_rq_driver_stats[] = {
+ /* description, offset */
+ { "drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
+ drop_total) },
+ { " err", offsetof(struct vmxnet3_rq_driver_stats,
+ drop_err) },
+ { " fcs", offsetof(struct vmxnet3_rq_driver_stats,
+ drop_fcs) },
+ { "rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
+ rx_buf_alloc_failure) },
+};
+
+/* gloabl stats maintained by the driver */
+static const struct vmxnet3_stat_desc
+vmxnet3_global_stats[] = {
+ /* description, offset */
+ { "tx timeout count", offsetof(struct vmxnet3_adapter,
+ tx_timeout_count) }
+};
+
+
+struct net_device_stats *
+vmxnet3_get_stats(struct net_device *netdev)
+{
+ struct vmxnet3_adapter *adapter;
+ struct vmxnet3_tq_driver_stats *drvTxStats;
+ struct vmxnet3_rq_driver_stats *drvRxStats;
+ struct UPT1_TxStats *devTxStats;
+ struct UPT1_RxStats *devRxStats;
+ struct net_device_stats *net_stats = &netdev->stats;
+
+ adapter = netdev_priv(netdev);
+
+ /* Collect the dev stats into the shared area */
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
+
+ /* Assuming that we have a single queue device */
+ devTxStats = &adapter->tqd_start->stats;
+ devRxStats = &adapter->rqd_start->stats;
+
+ /* Get access to the driver stats per queue */
+ drvTxStats = &adapter->tx_queue.stats;
+ drvRxStats = &adapter->rx_queue.stats;
+
+ memset(net_stats, 0, sizeof(*net_stats));
+
+ net_stats->rx_packets = devRxStats->ucastPktsRxOK +
+ devRxStats->mcastPktsRxOK +
+ devRxStats->bcastPktsRxOK;
+
+ net_stats->tx_packets = devTxStats->ucastPktsTxOK +
+ devTxStats->mcastPktsTxOK +
+ devTxStats->bcastPktsTxOK;
+
+ net_stats->rx_bytes = devRxStats->ucastBytesRxOK +
+ devRxStats->mcastBytesRxOK +
+ devRxStats->bcastBytesRxOK;
+
+ net_stats->tx_bytes = devTxStats->ucastBytesTxOK +
+ devTxStats->mcastBytesTxOK +
+ devTxStats->bcastBytesTxOK;
+
+ net_stats->rx_errors = devRxStats->pktsRxError;
+ net_stats->tx_errors = devTxStats->pktsTxError;
+ net_stats->rx_dropped = drvRxStats->drop_total;
+ net_stats->tx_dropped = drvTxStats->drop_total;
+ net_stats->multicast = devRxStats->mcastPktsRxOK;
+
+ return net_stats;
+}
+
+static int
+vmxnet3_get_sset_count(struct net_device *netdev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return ARRAY_SIZE(vmxnet3_tq_dev_stats) +
+ ARRAY_SIZE(vmxnet3_tq_driver_stats) +
+ ARRAY_SIZE(vmxnet3_rq_dev_stats) +
+ ARRAY_SIZE(vmxnet3_rq_driver_stats) +
+ ARRAY_SIZE(vmxnet3_global_stats);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+
+static int
+vmxnet3_get_regs_len(struct net_device *netdev)
+{
+ return 20 * sizeof(u32);
+}
+
+
+static void
+vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
+ drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
+
+ strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
+ sizeof(drvinfo->version));
+ drvinfo->driver[sizeof(drvinfo->version) - 1] = '\0';
+
+ strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
+ drvinfo->fw_version[sizeof(drvinfo->fw_version) - 1] = '\0';
+
+ strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
+ ETHTOOL_BUSINFO_LEN);
+ drvinfo->n_stats = vmxnet3_get_sset_count(netdev, ETH_SS_STATS);
+ drvinfo->testinfo_len = 0;
+ drvinfo->eedump_len = 0;
+ drvinfo->regdump_len = vmxnet3_get_regs_len(netdev);
+}
+
+
+static void
+vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
+{
+ if (stringset == ETH_SS_STATS) {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
+ memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
+ ETH_GSTRING_LEN);
+ buf += ETH_GSTRING_LEN;
+ }
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++) {
+ memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
+ ETH_GSTRING_LEN);
+ buf += ETH_GSTRING_LEN;
+ }
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
+ memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
+ ETH_GSTRING_LEN);
+ buf += ETH_GSTRING_LEN;
+ }
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++) {
+ memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
+ ETH_GSTRING_LEN);
+ buf += ETH_GSTRING_LEN;
+ }
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
+ memcpy(buf, vmxnet3_global_stats[i].desc,
+ ETH_GSTRING_LEN);
+ buf += ETH_GSTRING_LEN;
+ }
+ }
+}
+
+static u32
+vmxnet3_get_flags(struct net_device *netdev) {
+ return netdev->features;
+}
+
+static int
+vmxnet3_set_flags(struct net_device *netdev, u32 data) {
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ u8 lro_requested = (data & ETH_FLAG_LRO) == 0 ? 0 : 1;
+ u8 lro_present = (netdev->features & NETIF_F_LRO) == 0 ? 0 : 1;
+
+ if (lro_requested ^ lro_present) {
+ /* toggle the LRO feature*/
+ netdev->features ^= NETIF_F_LRO;
+
+ /* update harware LRO capability accordingly */
+ if (lro_requested)
+ adapter->shared->devRead.misc.uptFeatures &= UPT1_F_LRO;
+ else
+ adapter->shared->devRead.misc.uptFeatures &=
+ ~UPT1_F_LRO;
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_FEATURE);
+ }
+ return 0;
+}
+
+static void
+vmxnet3_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats, u64 *buf)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ u8 *base;
+ int i;
+
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
+
+ /* this does assume each counter is 64-bit wide */
+
+ base = (u8 *)&adapter->tqd_start->stats;
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
+ *buf++ = *(u64 *)(base + vmxnet3_tq_dev_stats[i].offset);
+
+ base = (u8 *)&adapter->tx_queue.stats;
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
+ *buf++ = *(u64 *)(base + vmxnet3_tq_driver_stats[i].offset);
+
+ base = (u8 *)&adapter->rqd_start->stats;
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
+ *buf++ = *(u64 *)(base + vmxnet3_rq_dev_stats[i].offset);
+
+ base = (u8 *)&adapter->rx_queue.stats;
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
+ *buf++ = *(u64 *)(base + vmxnet3_rq_driver_stats[i].offset);
+
+ base = (u8 *)adapter;
+ for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
+ *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
+}
+
+
+static void
+vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ u32 *buf = p;
+
+ memset(p, 0, vmxnet3_get_regs_len(netdev));
+
+ regs->version = 1;
+
+ /* Update vmxnet3_get_regs_len if we want to dump more registers */
+
+ /* make each ring use multiple of 16 bytes */
+ buf[0] = adapter->tx_queue.tx_ring.next2fill;
+ buf[1] = adapter->tx_queue.tx_ring.next2comp;
+ buf[2] = adapter->tx_queue.tx_ring.gen;
+ buf[3] = 0;
+
+ buf[4] = adapter->tx_queue.comp_ring.next2proc;
+ buf[5] = adapter->tx_queue.comp_ring.gen;
+ buf[6] = adapter->tx_queue.stopped;
+ buf[7] = 0;
+
+ buf[8] = adapter->rx_queue.rx_ring[0].next2fill;
+ buf[9] = adapter->rx_queue.rx_ring[0].next2comp;
+ buf[10] = adapter->rx_queue.rx_ring[0].gen;
+ buf[11] = 0;
+
+ buf[12] = adapter->rx_queue.rx_ring[1].next2fill;
+ buf[13] = adapter->rx_queue.rx_ring[1].next2comp;
+ buf[14] = adapter->rx_queue.rx_ring[1].gen;
+ buf[15] = 0;
+
+ buf[16] = adapter->rx_queue.comp_ring.next2proc;
+ buf[17] = adapter->rx_queue.comp_ring.gen;
+ buf[18] = 0;
+ buf[19] = 0;
+}
+
+
+static void
+vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
+ wol->wolopts = adapter->wol;
+}
+
+
+static int
+vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
+ WAKE_MAGICSECURE)) {
+ return -EOPNOTSUPP;
+ }
+
+ adapter->wol = wol->wolopts;
+
+ device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
+
+ return 0;
+}
+
+
+static int
+vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
+ SUPPORTED_TP;
+ ecmd->advertising = ADVERTISED_TP;
+ ecmd->port = PORT_TP;
+ ecmd->transceiver = XCVR_INTERNAL;
+
+ if (adapter->link_speed) {
+ ecmd->speed = adapter->link_speed;
+ ecmd->duplex = DUPLEX_FULL;
+ } else {
+ ecmd->speed = -1;
+ ecmd->duplex = -1;
+ }
+ return 0;
+}
+
+
+static void
+vmxnet3_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *param)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+
+ param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
+ param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
+ param->rx_mini_max_pending = 0;
+ param->rx_jumbo_max_pending = 0;
+
+ param->rx_pending = adapter->rx_queue.rx_ring[0].size;
+ param->tx_pending = adapter->tx_queue.tx_ring.size;
+ param->rx_mini_pending = 0;
+ param->rx_jumbo_pending = 0;
+}
+
+
+static int
+vmxnet3_set_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *param)
+{
+ struct vmxnet3_adapter *adapter = netdev_priv(netdev);
+ u32 new_tx_ring_size, new_rx_ring_size;
+ u32 sz;
+ int err = 0;
+
+ if (param->tx_pending == 0 || param->tx_pending >
+ VMXNET3_TX_RING_MAX_SIZE)
+ return -EINVAL;
+
+ if (param->rx_pending == 0 || param->rx_pending >
+ VMXNET3_RX_RING_MAX_SIZE)
+ return -EINVAL;
+
+
+ /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
+ new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
+ ~VMXNET3_RING_SIZE_MASK;
+ new_tx_ring_size = min_t(u32, new_tx_ring_size,
+ VMXNET3_TX_RING_MAX_SIZE);
+ if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
+ VMXNET3_RING_SIZE_ALIGN) != 0)
+ return -EINVAL;
+
+ /* ring0 has to be a multiple of
+ * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
+ */
+ sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
+ new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
+ new_rx_ring_size = min_t(u32, new_rx_ring_size,
+ VMXNET3_RX_RING_MAX_SIZE / sz * sz);
+ if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
+ sz) != 0)
+ return -EINVAL;
+
+ if (new_tx_ring_size == adapter->tx_queue.tx_ring.size &&
+ new_rx_ring_size == adapter->rx_queue.rx_ring[0].size) {
+ return 0;
+ }
+
+ /*
+ * Reset_work may be in the middle of resetting the device, wait for its
+ * completion.
+ */
+ while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
+ msleep(1);
+
+ if (netif_running(netdev)) {
+ vmxnet3_quiesce_dev(adapter);
+ vmxnet3_reset_dev(adapter);
+
+ /* recreate the rx queue and the tx queue based on the
+ * new sizes */
+ vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
+ vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
+
+ err = vmxnet3_create_queues(adapter, new_tx_ring_size,
+ new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE);
+ if (err) {
+ /* failed, most likely because of OOM, try default
+ * size */
+ printk(KERN_ERR "%s: failed to apply new sizes, try the"
+ " default ones\n", netdev->name);
+ err = vmxnet3_create_queues(adapter,
+ VMXNET3_DEF_TX_RING_SIZE,
+ VMXNET3_DEF_RX_RING_SIZE,
+ VMXNET3_DEF_RX_RING_SIZE);
+ if (err) {
+ printk(KERN_ERR "%s: failed to create queues "
+ "with default sizes. Closing it\n",
+ netdev->name);
+ goto out;
+ }
+ }
+
+ err = vmxnet3_activate_dev(adapter);
+ if (err)
+ printk(KERN_ERR "%s: failed to re-activate, error %d."
+ " Closing it\n", netdev->name, err);
+ }
+
+out:
+ clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
+ if (err)
+ vmxnet3_force_close(adapter);
+
+ return err;
+}
+
+
+static struct ethtool_ops vmxnet3_ethtool_ops = {
+ .get_settings = vmxnet3_get_settings,
+ .get_drvinfo = vmxnet3_get_drvinfo,
+ .get_regs_len = vmxnet3_get_regs_len,
+ .get_regs = vmxnet3_get_regs,
+ .get_wol = vmxnet3_get_wol,
+ .set_wol = vmxnet3_set_wol,
+ .get_link = ethtool_op_get_link,
+ .get_rx_csum = vmxnet3_get_rx_csum,
+ .set_rx_csum = vmxnet3_set_rx_csum,
+ .get_tx_csum = ethtool_op_get_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_hw_csum,
+ .get_sg = ethtool_op_get_sg,
+ .set_sg = ethtool_op_set_sg,
+ .get_tso = ethtool_op_get_tso,
+ .set_tso = ethtool_op_set_tso,
+ .get_strings = vmxnet3_get_strings,
+ .get_flags = vmxnet3_get_flags,
+ .set_flags = vmxnet3_set_flags,
+ .get_sset_count = vmxnet3_get_sset_count,
+ .get_ethtool_stats = vmxnet3_get_ethtool_stats,
+ .get_ringparam = vmxnet3_get_ringparam,
+ .set_ringparam = vmxnet3_set_ringparam,
+};
+
+void vmxnet3_set_ethtool_ops(struct net_device *netdev)
+{
+ SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
+}
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
new file mode 100644
index 0000000..cf4b08d
--- /dev/null
+++ b/drivers/net/vmxnet3/vmxnet3_int.h
@@ -0,0 +1,389 @@
+/*
+ * Linux driver for VMware's vmxnet3 ethernet NIC.
+ *
+ * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License and no later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Maintained by: Shreyas Bhatewara <[email protected]>
+ *
+ */
+
+#ifndef _VMXNET3_INT_H
+#define _VMXNET3_INT_H
+
+#include <linux/types.h>
+#include <linux/ethtool.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/ethtool.h>
+#include <linux/compiler.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/ioport.h>
+#include <linux/highmem.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/skbuff.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/uaccess.h>
+#include <asm/dma.h>
+#include <asm/page.h>
+
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/in.h>
+#include <linux/etherdevice.h>
+#include <asm/checksum.h>
+#include <linux/if_vlan.h>
+#include <linux/if_arp.h>
+#include <linux/inetdevice.h>
+#include <linux/dst.h>
+
+#include "vmxnet3_defs.h"
+
+#ifdef DEBUG
+# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)"
+#else
+# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI"
+#endif
+
+
+/*
+ * Version numbers
+ */
+#define VMXNET3_DRIVER_VERSION_STRING "1.0.4.0-k"
+
+/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
+#define VMXNET3_DRIVER_VERSION_NUM 0x01000400
+
+
+/*
+ * Capabilities
+ */
+
+enum {
+ VMNET_CAP_SG = 0x0001, /* Can do scatter-gather transmits. */
+ VMNET_CAP_IP4_CSUM = 0x0002, /* Can checksum only TCP/UDP over
+ * IPv4 */
+ VMNET_CAP_HW_CSUM = 0x0004, /* Can checksum all packets. */
+ VMNET_CAP_HIGH_DMA = 0x0008, /* Can DMA to high memory. */
+ VMNET_CAP_TOE = 0x0010, /* Supports TCP/IP offload. */
+ VMNET_CAP_TSO = 0x0020, /* Supports TCP Segmentation
+ * offload */
+ VMNET_CAP_SW_TSO = 0x0040, /* Supports SW TCP Segmentation */
+ VMNET_CAP_VMXNET_APROM = 0x0080, /* Vmxnet APROM support */
+ VMNET_CAP_HW_TX_VLAN = 0x0100, /* Can we do VLAN tagging in HW */
+ VMNET_CAP_HW_RX_VLAN = 0x0200, /* Can we do VLAN untagging in HW */
+ VMNET_CAP_SW_VLAN = 0x0400, /* VLAN tagging/untagging in SW */
+ VMNET_CAP_WAKE_PCKT_RCV = 0x0800, /* Can wake on network packet recv? */
+ VMNET_CAP_ENABLE_INT_INLINE = 0x1000, /* Enable Interrupt Inline */
+ VMNET_CAP_ENABLE_HEADER_COPY = 0x2000, /* copy header for vmkernel */
+ VMNET_CAP_TX_CHAIN = 0x4000, /* Guest can use multiple tx entries
+ * for a pkt */
+ VMNET_CAP_RX_CHAIN = 0x8000, /* pkt can span multiple rx entries */
+ VMNET_CAP_LPD = 0x10000, /* large pkt delivery */
+ VMNET_CAP_BPF = 0x20000, /* BPF Support in VMXNET Virtual HW*/
+ VMNET_CAP_SG_SPAN_PAGES = 0x40000, /* Scatter-gather can span multiple*/
+ /* pages transmits */
+ VMNET_CAP_IP6_CSUM = 0x80000, /* Can do IPv6 csum offload. */
+ VMNET_CAP_TSO6 = 0x100000, /* TSO seg. offload for IPv6 pkts. */
+ VMNET_CAP_TSO256k = 0x200000, /* Can do TSO seg offload for */
+ /* pkts up to 256kB. */
+ VMNET_CAP_UPT = 0x400000 /* Support UPT */
+};
+
+/*
+ * PCI vendor and device IDs.
+ */
+#define PCI_VENDOR_ID_VMWARE 0x15AD
+#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0
+#define MAX_ETHERNET_CARDS 10
+#define MAX_PCI_PASSTHRU_DEVICE 6
+
+struct vmxnet3_cmd_ring {
+ union Vmxnet3_GenericDesc *base;
+ u32 size;
+ u32 next2fill;
+ u32 next2comp;
+ u8 gen;
+ dma_addr_t basePA;
+};
+
+static inline void
+vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring)
+{
+ ring->next2fill++;
+ if (unlikely(ring->next2fill == ring->size)) {
+ ring->next2fill = 0;
+ VMXNET3_FLIP_RING_GEN(ring->gen);
+ }
+}
+
+static inline void
+vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring)
+{
+ VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size);
+}
+
+static inline int
+vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
+{
+ return (ring->next2comp > ring->next2fill ? 0 : ring->size) +
+ ring->next2comp - ring->next2fill - 1;
+}
+
+struct vmxnet3_comp_ring {
+ union Vmxnet3_GenericDesc *base;
+ u32 size;
+ u32 next2proc;
+ u8 gen;
+ u8 intr_idx;
+ dma_addr_t basePA;
+};
+
+static inline void
+vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
+{
+ ring->next2proc++;
+ if (unlikely(ring->next2proc == ring->size)) {
+ ring->next2proc = 0;
+ VMXNET3_FLIP_RING_GEN(ring->gen);
+ }
+}
+
+struct vmxnet3_tx_data_ring {
+ struct Vmxnet3_TxDataDesc *base;
+ u32 size;
+ dma_addr_t basePA;
+};
+
+enum vmxnet3_buf_map_type {
+ VMXNET3_MAP_INVALID = 0,
+ VMXNET3_MAP_NONE,
+ VMXNET3_MAP_SINGLE,
+ VMXNET3_MAP_PAGE,
+};
+
+struct vmxnet3_tx_buf_info {
+ u32 map_type;
+ u16 len;
+ u16 sop_idx;
+ dma_addr_t dma_addr;
+ struct sk_buff *skb;
+};
+
+struct vmxnet3_tq_driver_stats {
+ u64 drop_total; /* # of pkts dropped by the driver, the
+ * counters below track droppings due to
+ * different reasons
+ */
+ u64 drop_too_many_frags;
+ u64 drop_oversized_hdr;
+ u64 drop_hdr_inspect_err;
+ u64 drop_tso;
+
+ u64 tx_ring_full;
+ u64 linearized; /* # of pkts linearized */
+ u64 copy_skb_header; /* # of times we have to copy skb header */
+ u64 oversized_hdr;
+};
+
+struct vmxnet3_tx_ctx {
+ bool ipv4;
+ u16 mss;
+ u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum
+ * offloading
+ */
+ u32 l4_hdr_size; /* only valid if mss != 0 */
+ u32 copy_size; /* # of bytes copied into the data ring */
+ union Vmxnet3_GenericDesc *sop_txd;
+ union Vmxnet3_GenericDesc *eop_txd;
+};
+
+struct vmxnet3_tx_queue {
+ spinlock_t tx_lock;
+ struct vmxnet3_cmd_ring tx_ring;
+ struct vmxnet3_tx_buf_info *buf_info;
+ struct vmxnet3_tx_data_ring data_ring;
+ struct vmxnet3_comp_ring comp_ring;
+ struct Vmxnet3_TxQueueCtrl *shared;
+ struct vmxnet3_tq_driver_stats stats;
+ bool stopped;
+ int num_stop; /* # of times the queue is
+ * stopped */
+} __attribute__((__aligned__(SMP_CACHE_BYTES)));
+
+enum vmxnet3_rx_buf_type {
+ VMXNET3_RX_BUF_NONE = 0,
+ VMXNET3_RX_BUF_SKB = 1,
+ VMXNET3_RX_BUF_PAGE = 2
+};
+
+struct vmxnet3_rx_buf_info {
+ enum vmxnet3_rx_buf_type buf_type;
+ u16 len;
+ union {
+ struct sk_buff *skb;
+ struct page *page;
+ };
+ dma_addr_t dma_addr;
+};
+
+struct vmxnet3_rx_ctx {
+ struct sk_buff *skb;
+ u32 sop_idx;
+};
+
+struct vmxnet3_rq_driver_stats {
+ u64 drop_total;
+ u64 drop_err;
+ u64 drop_fcs;
+ u64 rx_buf_alloc_failure;
+};
+
+struct vmxnet3_rx_queue {
+ struct vmxnet3_cmd_ring rx_ring[2];
+ struct vmxnet3_comp_ring comp_ring;
+ struct vmxnet3_rx_ctx rx_ctx;
+ u32 qid; /* rqID in RCD for buffer from 1st ring */
+ u32 qid2; /* rqID in RCD for buffer from 2nd ring */
+ u32 uncommitted[2]; /* # of buffers allocated since last RXPROD
+ * update */
+ struct vmxnet3_rx_buf_info *buf_info[2];
+ struct Vmxnet3_RxQueueCtrl *shared;
+ struct vmxnet3_rq_driver_stats stats;
+} __attribute__((__aligned__(SMP_CACHE_BYTES)));
+
+#define VMXNET3_LINUX_MAX_MSIX_VECT 1
+
+struct vmxnet3_intr {
+ enum vmxnet3_intr_mask_mode mask_mode;
+ enum vmxnet3_intr_type type; /* MSI-X, MSI, or INTx? */
+ u8 num_intrs; /* # of intr vectors */
+ u8 event_intr_idx; /* idx of the intr vector for event */
+ u8 mod_levels[VMXNET3_LINUX_MAX_MSIX_VECT]; /* moderation level */
+#ifdef CONFIG_PCI_MSI
+ struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT];
+#endif
+};
+
+#define VMXNET3_STATE_BIT_RESETTING 0
+#define VMXNET3_STATE_BIT_QUIESCED 1
+struct vmxnet3_adapter {
+ struct vmxnet3_tx_queue tx_queue;
+ struct vmxnet3_rx_queue rx_queue;
+ struct napi_struct napi;
+ struct vlan_group *vlan_grp;
+
+ struct vmxnet3_intr intr;
+
+ struct Vmxnet3_DriverShared *shared;
+ struct Vmxnet3_PMConf *pm_conf;
+ struct Vmxnet3_TxQueueDesc *tqd_start; /* first tx queue desc */
+ struct Vmxnet3_RxQueueDesc *rqd_start; /* first rx queue desc */
+ struct net_device *netdev;
+ struct pci_dev *pdev;
+
+ u8 *hw_addr0; /* for BAR 0 */
+ u8 *hw_addr1; /* for BAR 1 */
+
+ /* feature control */
+ bool rxcsum;
+ bool lro;
+ bool jumbo_frame;
+
+ /* rx buffer related */
+ unsigned skb_buf_size;
+ int rx_buf_per_pkt; /* only apply to the 1st ring */
+ dma_addr_t shared_pa;
+ dma_addr_t queue_desc_pa;
+
+ /* Wake-on-LAN */
+ u32 wol;
+
+ /* Link speed */
+ u32 link_speed; /* in mbps */
+
+ u64 tx_timeout_count;
+ struct work_struct work;
+
+ unsigned long state; /* VMXNET3_STATE_BIT_xxx */
+
+ int dev_number;
+};
+
+#define VMXNET3_WRITE_BAR0_REG(adapter, reg, val) \
+ writel((val), (adapter)->hw_addr0 + (reg))
+#define VMXNET3_READ_BAR0_REG(adapter, reg) \
+ readl((adapter)->hw_addr0 + (reg))
+
+#define VMXNET3_WRITE_BAR1_REG(adapter, reg, val) \
+ writel((val), (adapter)->hw_addr1 + (reg))
+#define VMXNET3_READ_BAR1_REG(adapter, reg) \
+ readl((adapter)->hw_addr1 + (reg))
+
+#define VMXNET3_WAKE_QUEUE_THRESHOLD(tq) (5)
+#define VMXNET3_RX_ALLOC_THRESHOLD(rq, ring_idx, adapter) \
+ ((rq)->rx_ring[ring_idx].size >> 3)
+
+#define VMXNET3_GET_ADDR_LO(dma) ((u32)(dma))
+#define VMXNET3_GET_ADDR_HI(dma) ((u32)(((u64)(dma)) >> 32))
+
+/* must be a multiple of VMXNET3_RING_SIZE_ALIGN */
+#define VMXNET3_DEF_TX_RING_SIZE 512
+#define VMXNET3_DEF_RX_RING_SIZE 256
+
+#define VMXNET3_MAX_ETH_HDR_SIZE 22
+#define VMXNET3_MAX_SKB_BUF_SIZE (3*1024)
+
+int
+vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
+
+int
+vmxnet3_activate_dev(struct vmxnet3_adapter *adapter);
+
+void
+vmxnet3_force_close(struct vmxnet3_adapter *adapter);
+
+void
+vmxnet3_reset_dev(struct vmxnet3_adapter *adapter);
+
+void
+vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
+ struct vmxnet3_adapter *adapter);
+
+void
+vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
+ struct vmxnet3_adapter *adapter);
+
+int
+vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
+ u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size);
+
+extern void vmxnet3_set_ethtool_ops(struct net_device *netdev);
+extern struct net_device_stats *vmxnet3_get_stats(struct net_device *netdev);
+
+extern char vmxnet3_driver_name[];
+#endif
Hello all,
I do not mean to be bothersome but this thread has been unusually silent.
Could you please review the patch for me and reply with your comments /
acks ?
Thanks.
->Shreyas
On Tue, 6 Oct 2009, Shreyas Bhatewara wrote:
>
>
> Ethernet NIC driver for VMware's vmxnet3
>
> From: Shreyas Bhatewara <[email protected]>
>
> This patch adds driver support for VMware's virtual Ethernet NIC: vmxnet3
> Guests running on VMware hypervisors supporting vmxnet3 device will thus have
> access to improved network functionalities and performance.
>
> Signed-off-by: Shreyas Bhatewara <[email protected]>
> Signed-off-by: Bhavesh Davda <[email protected]>
> Signed-off-by: Ronghua Zhang <[email protected]>
>
> ---
>
> VMware virtual Ethernet NIC Driver : vmxnet3 - v3
>
> Changelog (v3-v2)
> - use ethtool instead of a module param to control hw LRO feature
> - rebase to 2.6.32-rc3
>
> Changelog (v2-v1)
> - Rebased the patch to v2.6.32-rc1
> - Changed all uint32_t types to u32 and friends
> - Removed duplicate max queue size from upt1_defs.h
> - Replaced #defines by enum
> - uniform spacing between datatype and membername in structures
> - removed some noisy printks, eliminated some BUG_ONs
> - corrected arguments of kcalloc
> - used pc_request_selected_regions, pci_enable_dev_mem
> - elminated not-so-useful wrapper functions, used eth_op_ functions instead
> - used strlcpy
> - used get_sset_counts instead of get_stats_count
> - used net_device_stats from struct net_device
>
>
> Please review the patch and provide your feedback/comments for
> upstreaming.
>
> Thanking you
> ->Shreyas
>
> ---
>
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 09a2028..0509f26 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -5628,6 +5628,13 @@ S: Maintained
> F: drivers/vlynq/vlynq.c
> F: include/linux/vlynq.h
>
> +VMWARE VMXNET3 ETHERNET DRIVER
> +M: Shreyas Bhatewara <[email protected]>
> +M: VMware, Inc. <[email protected]>
> +L: [email protected]
> +S: Maintained
> +F: drivers/net/vmxnet3/
> +
> VOLTAGE AND CURRENT REGULATOR FRAMEWORK
> M: Liam Girdwood <[email protected]>
> M: Mark Brown <[email protected]>
> diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> index 7127760..9789de2 100644
> --- a/drivers/net/Kconfig
> +++ b/drivers/net/Kconfig
> @@ -3230,4 +3230,12 @@ config VIRTIO_NET
> This is the virtual network driver for virtio. It can be used with
> lguest or QEMU based VMMs (like KVM or Xen). Say Y or M.
>
> +config VMXNET3
> + tristate "VMware VMXNET3 ethernet driver"
> + depends on PCI && X86
> + help
> + This driver supports VMware's vmxnet3 virtual ethernet NIC.
> + To compile this driver as a module, choose M here: the
> + module will be called vmxnet3.
> +
> endif # NETDEVICES
> diff --git a/drivers/net/Makefile b/drivers/net/Makefile
> index d866b8c..d3a0418 100644
> --- a/drivers/net/Makefile
> +++ b/drivers/net/Makefile
> @@ -26,6 +26,7 @@ obj-$(CONFIG_TEHUTI) += tehuti.o
> obj-$(CONFIG_ENIC) += enic/
> obj-$(CONFIG_JME) += jme.o
> obj-$(CONFIG_BE2NET) += benet/
> +obj-$(CONFIG_VMXNET3) += vmxnet3/
>
> gianfar_driver-objs := gianfar.o \
> gianfar_ethtool.o \
> diff --git a/drivers/net/vmxnet3/Makefile b/drivers/net/vmxnet3/Makefile
> new file mode 100644
> index 0000000..880f509
> --- /dev/null
> +++ b/drivers/net/vmxnet3/Makefile
> @@ -0,0 +1,35 @@
> +################################################################################
> +#
> +# Linux driver for VMware's vmxnet3 ethernet NIC.
> +#
> +# Copyright (C) 2007-2009, VMware, Inc. All Rights Reserved.
> +#
> +# This program is free software; you can redistribute it and/or modify it
> +# under the terms of the GNU General Public License as published by the
> +# Free Software Foundation; version 2 of the License and no later version.
> +#
> +# This program is distributed in the hope that it will be useful, but
> +# WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> +# NON INFRINGEMENT. See the GNU General Public License for more
> +# details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write to the Free Software
> +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
> +#
> +# The full GNU General Public License is included in this distribution in
> +# the file called "COPYING".
> +#
> +# Maintained by: Shreyas Bhatewara <[email protected]>
> +#
> +#
> +################################################################################
> +
> +#
> +# Makefile for the VMware vmxnet3 ethernet NIC driver
> +#
> +
> +obj-$(CONFIG_VMXNET3) += vmxnet3.o
> +
> +vmxnet3-objs := vmxnet3_drv.o vmxnet3_ethtool.o
> diff --git a/drivers/net/vmxnet3/upt1_defs.h b/drivers/net/vmxnet3/upt1_defs.h
> new file mode 100644
> index 0000000..37108fb
> --- /dev/null
> +++ b/drivers/net/vmxnet3/upt1_defs.h
> @@ -0,0 +1,96 @@
> +/*
> + * Linux driver for VMware's vmxnet3 ethernet NIC.
> + *
> + * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; version 2 of the License and no later version.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT. See the GNU General Public License for more
> + * details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * The full GNU General Public License is included in this distribution in
> + * the file called "COPYING".
> + *
> + * Maintained by: Shreyas Bhatewara <[email protected]>
> + *
> + */
> +
> +#ifndef _UPT1_DEFS_H
> +#define _UPT1_DEFS_H
> +
> +struct UPT1_TxStats {
> + u64 TSOPktsTxOK; /* TSO pkts post-segmentation */
> + u64 TSOBytesTxOK;
> + u64 ucastPktsTxOK;
> + u64 ucastBytesTxOK;
> + u64 mcastPktsTxOK;
> + u64 mcastBytesTxOK;
> + u64 bcastPktsTxOK;
> + u64 bcastBytesTxOK;
> + u64 pktsTxError;
> + u64 pktsTxDiscard;
> +};
> +
> +struct UPT1_RxStats {
> + u64 LROPktsRxOK; /* LRO pkts */
> + u64 LROBytesRxOK; /* bytes from LRO pkts */
> + /* the following counters are for pkts from the wire, i.e., pre-LRO */
> + u64 ucastPktsRxOK;
> + u64 ucastBytesRxOK;
> + u64 mcastPktsRxOK;
> + u64 mcastBytesRxOK;
> + u64 bcastPktsRxOK;
> + u64 bcastBytesRxOK;
> + u64 pktsRxOutOfBuf;
> + u64 pktsRxError;
> +};
> +
> +/* interrupt moderation level */
> +enum {
> + UPT1_IML_NONE = 0, /* no interrupt moderation */
> + UPT1_IML_HIGHEST = 7, /* least intr generated */
> + UPT1_IML_ADAPTIVE = 8, /* adpative intr moderation */
> +};
> +/* values for UPT1_RSSConf.hashFunc */
> +enum {
> + UPT1_RSS_HASH_TYPE_NONE = 0x0,
> + UPT1_RSS_HASH_TYPE_IPV4 = 0x01,
> + UPT1_RSS_HASH_TYPE_TCP_IPV4 = 0x02,
> + UPT1_RSS_HASH_TYPE_IPV6 = 0x04,
> + UPT1_RSS_HASH_TYPE_TCP_IPV6 = 0x08,
> +};
> +
> +enum {
> + UPT1_RSS_HASH_FUNC_NONE = 0x0,
> + UPT1_RSS_HASH_FUNC_TOEPLITZ = 0x01,
> +};
> +
> +#define UPT1_RSS_MAX_KEY_SIZE 40
> +#define UPT1_RSS_MAX_IND_TABLE_SIZE 128
> +
> +struct UPT1_RSSConf {
> + u16 hashType;
> + u16 hashFunc;
> + u16 hashKeySize;
> + u16 indTableSize;
> + u8 hashKey[UPT1_RSS_MAX_KEY_SIZE];
> + u8 indTable[UPT1_RSS_MAX_IND_TABLE_SIZE];
> +};
> +
> +/* features */
> +enum {
> + UPT1_F_RXCSUM = 0x0001, /* rx csum verification */
> + UPT1_F_RSS = 0x0002,
> + UPT1_F_RXVLAN = 0x0004, /* VLAN tag stripping */
> + UPT1_F_LRO = 0x0008,
> +};
> +#endif
> diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h
> new file mode 100644
> index 0000000..dc8ee44
> --- /dev/null
> +++ b/drivers/net/vmxnet3/vmxnet3_defs.h
> @@ -0,0 +1,535 @@
> +/*
> + * Linux driver for VMware's vmxnet3 ethernet NIC.
> + *
> + * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; version 2 of the License and no later version.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT. See the GNU General Public License for more
> + * details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * The full GNU General Public License is included in this distribution in
> + * the file called "COPYING".
> + *
> + * Maintained by: Shreyas Bhatewara <[email protected]>
> + *
> + */
> +
> +#ifndef _VMXNET3_DEFS_H_
> +#define _VMXNET3_DEFS_H_
> +
> +#include "upt1_defs.h"
> +
> +/* all registers are 32 bit wide */
> +/* BAR 1 */
> +enum {
> + VMXNET3_REG_VRRS = 0x0, /* Vmxnet3 Revision Report Selection */
> + VMXNET3_REG_UVRS = 0x8, /* UPT Version Report Selection */
> + VMXNET3_REG_DSAL = 0x10, /* Driver Shared Address Low */
> + VMXNET3_REG_DSAH = 0x18, /* Driver Shared Address High */
> + VMXNET3_REG_CMD = 0x20, /* Command */
> + VMXNET3_REG_MACL = 0x28, /* MAC Address Low */
> + VMXNET3_REG_MACH = 0x30, /* MAC Address High */
> + VMXNET3_REG_ICR = 0x38, /* Interrupt Cause Register */
> + VMXNET3_REG_ECR = 0x40 /* Event Cause Register */
> +};
> +
> +/* BAR 0 */
> +enum {
> + VMXNET3_REG_IMR = 0x0, /* Interrupt Mask Register */
> + VMXNET3_REG_TXPROD = 0x600, /* Tx Producer Index */
> + VMXNET3_REG_RXPROD = 0x800, /* Rx Producer Index for ring 1 */
> + VMXNET3_REG_RXPROD2 = 0xA00 /* Rx Producer Index for ring 2 */
> +};
> +
> +#define VMXNET3_PT_REG_SIZE 4096 /* BAR 0 */
> +#define VMXNET3_VD_REG_SIZE 4096 /* BAR 1 */
> +
> +#define VMXNET3_REG_ALIGN 8 /* All registers are 8-byte aligned. */
> +#define VMXNET3_REG_ALIGN_MASK 0x7
> +
> +/* I/O Mapped access to registers */
> +#define VMXNET3_IO_TYPE_PT 0
> +#define VMXNET3_IO_TYPE_VD 1
> +#define VMXNET3_IO_ADDR(type, reg) (((type) << 24) | ((reg) & 0xFFFFFF))
> +#define VMXNET3_IO_TYPE(addr) ((addr) >> 24)
> +#define VMXNET3_IO_REG(addr) ((addr) & 0xFFFFFF)
> +
> +enum {
> + VMXNET3_CMD_FIRST_SET = 0xCAFE0000,
> + VMXNET3_CMD_ACTIVATE_DEV = VMXNET3_CMD_FIRST_SET,
> + VMXNET3_CMD_QUIESCE_DEV,
> + VMXNET3_CMD_RESET_DEV,
> + VMXNET3_CMD_UPDATE_RX_MODE,
> + VMXNET3_CMD_UPDATE_MAC_FILTERS,
> + VMXNET3_CMD_UPDATE_VLAN_FILTERS,
> + VMXNET3_CMD_UPDATE_RSSIDT,
> + VMXNET3_CMD_UPDATE_IML,
> + VMXNET3_CMD_UPDATE_PMCFG,
> + VMXNET3_CMD_UPDATE_FEATURE,
> + VMXNET3_CMD_LOAD_PLUGIN,
> +
> + VMXNET3_CMD_FIRST_GET = 0xF00D0000,
> + VMXNET3_CMD_GET_QUEUE_STATUS = VMXNET3_CMD_FIRST_GET,
> + VMXNET3_CMD_GET_STATS,
> + VMXNET3_CMD_GET_LINK,
> + VMXNET3_CMD_GET_PERM_MAC_LO,
> + VMXNET3_CMD_GET_PERM_MAC_HI,
> + VMXNET3_CMD_GET_DID_LO,
> + VMXNET3_CMD_GET_DID_HI,
> + VMXNET3_CMD_GET_DEV_EXTRA_INFO,
> + VMXNET3_CMD_GET_CONF_INTR
> +};
> +
> +struct Vmxnet3_TxDesc {
> + u64 addr;
> +
> + u32 len:14;
> + u32 gen:1; /* generation bit */
> + u32 rsvd:1;
> + u32 dtype:1; /* descriptor type */
> + u32 ext1:1;
> + u32 msscof:14; /* MSS, checksum offset, flags */
> +
> + u32 hlen:10; /* header len */
> + u32 om:2; /* offload mode */
> + u32 eop:1; /* End Of Packet */
> + u32 cq:1; /* completion request */
> + u32 ext2:1;
> + u32 ti:1; /* VLAN Tag Insertion */
> + u32 tci:16; /* Tag to Insert */
> +};
> +
> +/* TxDesc.OM values */
> +#define VMXNET3_OM_NONE 0
> +#define VMXNET3_OM_CSUM 2
> +#define VMXNET3_OM_TSO 3
> +
> +/* fields in TxDesc we access w/o using bit fields */
> +#define VMXNET3_TXD_EOP_SHIFT 12
> +#define VMXNET3_TXD_CQ_SHIFT 13
> +#define VMXNET3_TXD_GEN_SHIFT 14
> +
> +#define VMXNET3_TXD_CQ (1 << VMXNET3_TXD_CQ_SHIFT)
> +#define VMXNET3_TXD_EOP (1 << VMXNET3_TXD_EOP_SHIFT)
> +#define VMXNET3_TXD_GEN (1 << VMXNET3_TXD_GEN_SHIFT)
> +
> +#define VMXNET3_HDR_COPY_SIZE 128
> +
> +
> +struct Vmxnet3_TxDataDesc {
> + u8 data[VMXNET3_HDR_COPY_SIZE];
> +};
> +
> +
> +struct Vmxnet3_TxCompDesc {
> + u32 txdIdx:12; /* Index of the EOP TxDesc */
> + u32 ext1:20;
> +
> + u32 ext2;
> + u32 ext3;
> +
> + u32 rsvd:24;
> + u32 type:7; /* completion type */
> + u32 gen:1; /* generation bit */
> +};
> +
> +
> +struct Vmxnet3_RxDesc {
> + u64 addr;
> +
> + u32 len:14;
> + u32 btype:1; /* Buffer Type */
> + u32 dtype:1; /* Descriptor type */
> + u32 rsvd:15;
> + u32 gen:1; /* Generation bit */
> +
> + u32 ext1;
> +};
> +
> +/* values of RXD.BTYPE */
> +#define VMXNET3_RXD_BTYPE_HEAD 0 /* head only */
> +#define VMXNET3_RXD_BTYPE_BODY 1 /* body only */
> +
> +/* fields in RxDesc we access w/o using bit fields */
> +#define VMXNET3_RXD_BTYPE_SHIFT 14
> +#define VMXNET3_RXD_GEN_SHIFT 31
> +
> +
> +struct Vmxnet3_RxCompDesc {
> + u32 rxdIdx:12; /* Index of the RxDesc */
> + u32 ext1:2;
> + u32 eop:1; /* End of Packet */
> + u32 sop:1; /* Start of Packet */
> + u32 rqID:10; /* rx queue/ring ID */
> + u32 rssType:4; /* RSS hash type used */
> + u32 cnc:1; /* Checksum Not Calculated */
> + u32 ext2:1;
> +
> + u32 rssHash; /* RSS hash value */
> +
> + u32 len:14; /* data length */
> + u32 err:1; /* Error */
> + u32 ts:1; /* Tag is stripped */
> + u32 tci:16; /* Tag stripped */
> +
> + u32 csum:16;
> + u32 tuc:1; /* TCP/UDP Checksum Correct */
> + u32 udp:1; /* UDP packet */
> + u32 tcp:1; /* TCP packet */
> + u32 ipc:1; /* IP Checksum Correct */
> + u32 v6:1; /* IPv6 */
> + u32 v4:1; /* IPv4 */
> + u32 frg:1; /* IP Fragment */
> + u32 fcs:1; /* Frame CRC correct */
> + u32 type:7; /* completion type */
> + u32 gen:1; /* generation bit */
> +};
> +
> +/* fields in RxCompDesc we access via Vmxnet3_GenericDesc.dword[3] */
> +#define VMXNET3_RCD_TUC_SHIFT 16
> +#define VMXNET3_RCD_IPC_SHIFT 19
> +
> +/* fields in RxCompDesc we access via Vmxnet3_GenericDesc.qword[1] */
> +#define VMXNET3_RCD_TYPE_SHIFT 56
> +#define VMXNET3_RCD_GEN_SHIFT 63
> +
> +/* csum OK for TCP/UDP pkts over IP */
> +#define VMXNET3_RCD_CSUM_OK (1 << VMXNET3_RCD_TUC_SHIFT | \
> + 1 << VMXNET3_RCD_IPC_SHIFT)
> +
> +/* value of RxCompDesc.rssType */
> +enum {
> + VMXNET3_RCD_RSS_TYPE_NONE = 0,
> + VMXNET3_RCD_RSS_TYPE_IPV4 = 1,
> + VMXNET3_RCD_RSS_TYPE_TCPIPV4 = 2,
> + VMXNET3_RCD_RSS_TYPE_IPV6 = 3,
> + VMXNET3_RCD_RSS_TYPE_TCPIPV6 = 4,
> +};
> +
> +
> +/* a union for accessing all cmd/completion descriptors */
> +union Vmxnet3_GenericDesc {
> + u64 qword[2];
> + u32 dword[4];
> + u16 word[8];
> + struct Vmxnet3_TxDesc txd;
> + struct Vmxnet3_RxDesc rxd;
> + struct Vmxnet3_TxCompDesc tcd;
> + struct Vmxnet3_RxCompDesc rcd;
> +};
> +
> +#define VMXNET3_INIT_GEN 1
> +
> +/* Max size of a single tx buffer */
> +#define VMXNET3_MAX_TX_BUF_SIZE (1 << 14)
> +
> +/* # of tx desc needed for a tx buffer size */
> +#define VMXNET3_TXD_NEEDED(size) (((size) + VMXNET3_MAX_TX_BUF_SIZE - 1) / \
> + VMXNET3_MAX_TX_BUF_SIZE)
> +
> +/* max # of tx descs for a non-tso pkt */
> +#define VMXNET3_MAX_TXD_PER_PKT 16
> +
> +/* Max size of a single rx buffer */
> +#define VMXNET3_MAX_RX_BUF_SIZE ((1 << 14) - 1)
> +/* Minimum size of a type 0 buffer */
> +#define VMXNET3_MIN_T0_BUF_SIZE 128
> +#define VMXNET3_MAX_CSUM_OFFSET 1024
> +
> +/* Ring base address alignment */
> +#define VMXNET3_RING_BA_ALIGN 512
> +#define VMXNET3_RING_BA_MASK (VMXNET3_RING_BA_ALIGN - 1)
> +
> +/* Ring size must be a multiple of 32 */
> +#define VMXNET3_RING_SIZE_ALIGN 32
> +#define VMXNET3_RING_SIZE_MASK (VMXNET3_RING_SIZE_ALIGN - 1)
> +
> +/* Max ring size */
> +#define VMXNET3_TX_RING_MAX_SIZE 4096
> +#define VMXNET3_TC_RING_MAX_SIZE 4096
> +#define VMXNET3_RX_RING_MAX_SIZE 4096
> +#define VMXNET3_RC_RING_MAX_SIZE 8192
> +
> +/* a list of reasons for queue stop */
> +
> +enum {
> + VMXNET3_ERR_NOEOP = 0x80000000, /* cannot find the EOP desc of a pkt */
> + VMXNET3_ERR_TXD_REUSE = 0x80000001, /* reuse TxDesc before tx completion */
> + VMXNET3_ERR_BIG_PKT = 0x80000002, /* too many TxDesc for a pkt */
> + VMXNET3_ERR_DESC_NOT_SPT = 0x80000003, /* descriptor type not supported */
> + VMXNET3_ERR_SMALL_BUF = 0x80000004, /* type 0 buffer too small */
> + VMXNET3_ERR_STRESS = 0x80000005, /* stress option firing in vmkernel */
> + VMXNET3_ERR_SWITCH = 0x80000006, /* mode switch failure */
> + VMXNET3_ERR_TXD_INVALID = 0x80000007, /* invalid TxDesc */
> +};
> +
> +/* completion descriptor types */
> +#define VMXNET3_CDTYPE_TXCOMP 0 /* Tx Completion Descriptor */
> +#define VMXNET3_CDTYPE_RXCOMP 3 /* Rx Completion Descriptor */
> +
> +enum {
> + VMXNET3_GOS_BITS_UNK = 0, /* unknown */
> + VMXNET3_GOS_BITS_32 = 1,
> + VMXNET3_GOS_BITS_64 = 2,
> +};
> +
> +#define VMXNET3_GOS_TYPE_LINUX 1
> +
> +
> +struct Vmxnet3_GOSInfo {
> + u32 gosBits:2; /* 32-bit or 64-bit? */
> + u32 gosType:4; /* which guest */
> + u32 gosVer:16; /* gos version */
> + u32 gosMisc:10; /* other info about gos */
> +};
> +
> +
> +struct Vmxnet3_DriverInfo {
> + u32 version;
> + struct Vmxnet3_GOSInfo gos;
> + u32 vmxnet3RevSpt;
> + u32 uptVerSpt;
> +};
> +
> +
> +#define VMXNET3_REV1_MAGIC 0xbabefee1
> +
> +/*
> + * QueueDescPA must be 128 bytes aligned. It points to an array of
> + * Vmxnet3_TxQueueDesc followed by an array of Vmxnet3_RxQueueDesc.
> + * The number of Vmxnet3_TxQueueDesc/Vmxnet3_RxQueueDesc are specified by
> + * Vmxnet3_MiscConf.numTxQueues/numRxQueues, respectively.
> + */
> +#define VMXNET3_QUEUE_DESC_ALIGN 128
> +
> +
> +struct Vmxnet3_MiscConf {
> + struct Vmxnet3_DriverInfo driverInfo;
> + u64 uptFeatures;
> + u64 ddPA; /* driver data PA */
> + u64 queueDescPA; /* queue descriptor table PA */
> + u32 ddLen; /* driver data len */
> + u32 queueDescLen; /* queue desc. table len in bytes */
> + u32 mtu;
> + u16 maxNumRxSG;
> + u8 numTxQueues;
> + u8 numRxQueues;
> + u32 reserved[4];
> +};
> +
> +
> +struct Vmxnet3_TxQueueConf {
> + u64 txRingBasePA;
> + u64 dataRingBasePA;
> + u64 compRingBasePA;
> + u64 ddPA; /* driver data */
> + u64 reserved;
> + u32 txRingSize; /* # of tx desc */
> + u32 dataRingSize; /* # of data desc */
> + u32 compRingSize; /* # of comp desc */
> + u32 ddLen; /* size of driver data */
> + u8 intrIdx;
> + u8 _pad[7];
> +};
> +
> +
> +struct Vmxnet3_RxQueueConf {
> + u64 rxRingBasePA[2];
> + u64 compRingBasePA;
> + u64 ddPA; /* driver data */
> + u64 reserved;
> + u32 rxRingSize[2]; /* # of rx desc */
> + u32 compRingSize; /* # of rx comp desc */
> + u32 ddLen; /* size of driver data */
> + u8 intrIdx;
> + u8 _pad[7];
> +};
> +
> +
> +enum vmxnet3_intr_mask_mode {
> + VMXNET3_IMM_AUTO = 0,
> + VMXNET3_IMM_ACTIVE = 1,
> + VMXNET3_IMM_LAZY = 2
> +};
> +
> +enum vmxnet3_intr_type {
> + VMXNET3_IT_AUTO = 0,
> + VMXNET3_IT_INTX = 1,
> + VMXNET3_IT_MSI = 2,
> + VMXNET3_IT_MSIX = 3
> +};
> +
> +#define VMXNET3_MAX_TX_QUEUES 8
> +#define VMXNET3_MAX_RX_QUEUES 16
> +/* addition 1 for events */
> +#define VMXNET3_MAX_INTRS 25
> +
> +
> +struct Vmxnet3_IntrConf {
> + bool autoMask;
> + u8 numIntrs; /* # of interrupts */
> + u8 eventIntrIdx;
> + u8 modLevels[VMXNET3_MAX_INTRS]; /* moderation level for
> + * each intr */
> + u32 reserved[3];
> +};
> +
> +/* one bit per VLAN ID, the size is in the units of u32 */
> +#define VMXNET3_VFT_SIZE (4096 / (sizeof(u32) * 8))
> +
> +
> +struct Vmxnet3_QueueStatus {
> + bool stopped;
> + u8 _pad[3];
> + u32 error;
> +};
> +
> +
> +struct Vmxnet3_TxQueueCtrl {
> + u32 txNumDeferred;
> + u32 txThreshold;
> + u64 reserved;
> +};
> +
> +
> +struct Vmxnet3_RxQueueCtrl {
> + bool updateRxProd;
> + u8 _pad[7];
> + u64 reserved;
> +};
> +
> +enum {
> + VMXNET3_RXM_UCAST = 0x01, /* unicast only */
> + VMXNET3_RXM_MCAST = 0x02, /* multicast passing the filters */
> + VMXNET3_RXM_BCAST = 0x04, /* broadcast only */
> + VMXNET3_RXM_ALL_MULTI = 0x08, /* all multicast */
> + VMXNET3_RXM_PROMISC = 0x10 /* promiscuous */
> +};
> +
> +struct Vmxnet3_RxFilterConf {
> + u32 rxMode; /* VMXNET3_RXM_xxx */
> + u16 mfTableLen; /* size of the multicast filter table */
> + u16 _pad1;
> + u64 mfTablePA; /* PA of the multicast filters table */
> + u32 vfTable[VMXNET3_VFT_SIZE]; /* vlan filter */
> +};
> +
> +
> +#define VMXNET3_PM_MAX_FILTERS 6
> +#define VMXNET3_PM_MAX_PATTERN_SIZE 128
> +#define VMXNET3_PM_MAX_MASK_SIZE (VMXNET3_PM_MAX_PATTERN_SIZE / 8)
> +
> +#define VMXNET3_PM_WAKEUP_MAGIC 0x01 /* wake up on magic pkts */
> +#define VMXNET3_PM_WAKEUP_FILTER 0x02 /* wake up on pkts matching
> + * filters */
> +
> +
> +struct Vmxnet3_PM_PktFilter {
> + u8 maskSize;
> + u8 patternSize;
> + u8 mask[VMXNET3_PM_MAX_MASK_SIZE];
> + u8 pattern[VMXNET3_PM_MAX_PATTERN_SIZE];
> + u8 pad[6];
> +};
> +
> +
> +struct Vmxnet3_PMConf {
> + u16 wakeUpEvents; /* VMXNET3_PM_WAKEUP_xxx */
> + u8 numFilters;
> + u8 pad[5];
> + struct Vmxnet3_PM_PktFilter filters[VMXNET3_PM_MAX_FILTERS];
> +};
> +
> +
> +struct Vmxnet3_VariableLenConfDesc {
> + u32 confVer;
> + u32 confLen;
> + u64 confPA;
> +};
> +
> +
> +struct Vmxnet3_TxQueueDesc {
> + struct Vmxnet3_TxQueueCtrl ctrl;
> + struct Vmxnet3_TxQueueConf conf;
> +
> + /* Driver read after a GET command */
> + struct Vmxnet3_QueueStatus status;
> + struct UPT1_TxStats stats;
> + u8 _pad[88]; /* 128 aligned */
> +};
> +
> +
> +struct Vmxnet3_RxQueueDesc {
> + struct Vmxnet3_RxQueueCtrl ctrl;
> + struct Vmxnet3_RxQueueConf conf;
> + /* Driver read after a GET commad */
> + struct Vmxnet3_QueueStatus status;
> + struct UPT1_RxStats stats;
> + u8 __pad[88]; /* 128 aligned */
> +};
> +
> +
> +struct Vmxnet3_DSDevRead {
> + /* read-only region for device, read by dev in response to a SET cmd */
> + struct Vmxnet3_MiscConf misc;
> + struct Vmxnet3_IntrConf intrConf;
> + struct Vmxnet3_RxFilterConf rxFilterConf;
> + struct Vmxnet3_VariableLenConfDesc rssConfDesc;
> + struct Vmxnet3_VariableLenConfDesc pmConfDesc;
> + struct Vmxnet3_VariableLenConfDesc pluginConfDesc;
> +};
> +
> +/* All structures in DriverShared are padded to multiples of 8 bytes */
> +struct Vmxnet3_DriverShared {
> + u32 magic;
> + /* make devRead start at 64bit boundaries */
> + u32 pad;
> + struct Vmxnet3_DSDevRead devRead;
> + u32 ecr;
> + u32 reserved[5];
> +};
> +
> +
> +#define VMXNET3_ECR_RQERR (1 << 0)
> +#define VMXNET3_ECR_TQERR (1 << 1)
> +#define VMXNET3_ECR_LINK (1 << 2)
> +#define VMXNET3_ECR_DIC (1 << 3)
> +#define VMXNET3_ECR_DEBUG (1 << 4)
> +
> +/* flip the gen bit of a ring */
> +#define VMXNET3_FLIP_RING_GEN(gen) ((gen) = (gen) ^ 0x1)
> +
> +/* only use this if moving the idx won't affect the gen bit */
> +#define VMXNET3_INC_RING_IDX_ONLY(idx, ring_size) \
> + do {\
> + (idx)++;\
> + if (unlikely((idx) == (ring_size))) {\
> + (idx) = 0;\
> + } \
> + } while (0)
> +
> +#define VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid) \
> + (vfTable[vid >> 5] |= (1 << (vid & 31)))
> +#define VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid) \
> + (vfTable[vid >> 5] &= ~(1 << (vid & 31)))
> +
> +#define VMXNET3_VFTABLE_ENTRY_IS_SET(vfTable, vid) \
> + ((vfTable[vid >> 5] & (1 << (vid & 31))) != 0)
> +
> +#define VMXNET3_MAX_MTU 9000
> +#define VMXNET3_MIN_MTU 60
> +
> +#define VMXNET3_LINK_UP (10000 << 16 | 1) /* 10 Gbps, up */
> +#define VMXNET3_LINK_DOWN 0
> +
> +#endif /* _VMXNET3_DEFS_H_ */
> diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
> new file mode 100644
> index 0000000..a886f24
> --- /dev/null
> +++ b/drivers/net/vmxnet3/vmxnet3_drv.c
> @@ -0,0 +1,2553 @@
> +/*
> + * Linux driver for VMware's vmxnet3 ethernet NIC.
> + *
> + * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; version 2 of the License and no later version.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT. See the GNU General Public License for more
> + * details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * The full GNU General Public License is included in this distribution in
> + * the file called "COPYING".
> + *
> + * Maintained by: Shreyas Bhatewara <[email protected]>
> + *
> + */
> +
> +#include "vmxnet3_int.h"
> +
> +char vmxnet3_driver_name[] = "vmxnet3";
> +#define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver"
> +
> +
> +/*
> + * PCI Device ID Table
> + * Last entry must be all 0s
> + */
> +static const struct pci_device_id vmxnet3_pciid_table[] = {
> + {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)},
> + {0}
> +};
> +
> +MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table);
> +
> +static atomic_t devices_found;
> +
> +
> +/*
> + * Enable/Disable the given intr
> + */
> +static void
> +vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
> +{
> + VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0);
> +}
> +
> +
> +static void
> +vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx)
> +{
> + VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1);
> +}
> +
> +
> +/*
> + * Enable/Disable all intrs used by the device
> + */
> +static void
> +vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter)
> +{
> + int i;
> +
> + for (i = 0; i < adapter->intr.num_intrs; i++)
> + vmxnet3_enable_intr(adapter, i);
> +}
> +
> +
> +static void
> +vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter)
> +{
> + int i;
> +
> + for (i = 0; i < adapter->intr.num_intrs; i++)
> + vmxnet3_disable_intr(adapter, i);
> +}
> +
> +
> +static void
> +vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events)
> +{
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events);
> +}
> +
> +
> +static bool
> +vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
> +{
> + return netif_queue_stopped(adapter->netdev);
> +}
> +
> +
> +static void
> +vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
> +{
> + tq->stopped = false;
> + netif_start_queue(adapter->netdev);
> +}
> +
> +
> +static void
> +vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
> +{
> + tq->stopped = false;
> + netif_wake_queue(adapter->netdev);
> +}
> +
> +
> +static void
> +vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter)
> +{
> + tq->stopped = true;
> + tq->num_stop++;
> + netif_stop_queue(adapter->netdev);
> +}
> +
> +
> +/*
> + * Check the link state. This may start or stop the tx queue.
> + */
> +static void
> +vmxnet3_check_link(struct vmxnet3_adapter *adapter)
> +{
> + u32 ret;
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
> + ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
> + adapter->link_speed = ret >> 16;
> + if (ret & 1) { /* Link is up. */
> + printk(KERN_INFO "%s: NIC Link is Up %d Mbps\n",
> + adapter->netdev->name, adapter->link_speed);
> + if (!netif_carrier_ok(adapter->netdev))
> + netif_carrier_on(adapter->netdev);
> +
> + vmxnet3_tq_start(&adapter->tx_queue, adapter);
> + } else {
> + printk(KERN_INFO "%s: NIC Link is Down\n",
> + adapter->netdev->name);
> + if (netif_carrier_ok(adapter->netdev))
> + netif_carrier_off(adapter->netdev);
> +
> + vmxnet3_tq_stop(&adapter->tx_queue, adapter);
> + }
> +}
> +
> +
> +static void
> +vmxnet3_process_events(struct vmxnet3_adapter *adapter)
> +{
> + u32 events = adapter->shared->ecr;
> + if (!events)
> + return;
> +
> + vmxnet3_ack_events(adapter, events);
> +
> + /* Check if link state has changed */
> + if (events & VMXNET3_ECR_LINK)
> + vmxnet3_check_link(adapter);
> +
> + /* Check if there is an error on xmit/recv queues */
> + if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_GET_QUEUE_STATUS);
> +
> + if (adapter->tqd_start->status.stopped) {
> + printk(KERN_ERR "%s: tq error 0x%x\n",
> + adapter->netdev->name,
> + adapter->tqd_start->status.error);
> + }
> + if (adapter->rqd_start->status.stopped) {
> + printk(KERN_ERR "%s: rq error 0x%x\n",
> + adapter->netdev->name,
> + adapter->rqd_start->status.error);
> + }
> +
> + schedule_work(&adapter->work);
> + }
> +}
> +
> +
> +static void
> +vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
> + struct pci_dev *pdev)
> +{
> + if (tbi->map_type == VMXNET3_MAP_SINGLE)
> + pci_unmap_single(pdev, tbi->dma_addr, tbi->len,
> + PCI_DMA_TODEVICE);
> + else if (tbi->map_type == VMXNET3_MAP_PAGE)
> + pci_unmap_page(pdev, tbi->dma_addr, tbi->len,
> + PCI_DMA_TODEVICE);
> + else
> + BUG_ON(tbi->map_type != VMXNET3_MAP_NONE);
> +
> + tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */
> +}
> +
> +
> +static int
> +vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq,
> + struct pci_dev *pdev, struct vmxnet3_adapter *adapter)
> +{
> + struct sk_buff *skb;
> + int entries = 0;
> +
> + /* no out of order completion */
> + BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp);
> + BUG_ON(tq->tx_ring.base[eop_idx].txd.eop != 1);
> +
> + skb = tq->buf_info[eop_idx].skb;
> + BUG_ON(skb == NULL);
> + tq->buf_info[eop_idx].skb = NULL;
> +
> + VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size);
> +
> + while (tq->tx_ring.next2comp != eop_idx) {
> + vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp,
> + pdev);
> +
> + /* update next2comp w/o tx_lock. Since we are marking more,
> + * instead of less, tx ring entries avail, the worst case is
> + * that the tx routine incorrectly re-queues a pkt due to
> + * insufficient tx ring entries.
> + */
> + vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
> + entries++;
> + }
> +
> + dev_kfree_skb_any(skb);
> + return entries;
> +}
> +
> +
> +static int
> +vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter)
> +{
> + int completed = 0;
> + union Vmxnet3_GenericDesc *gdesc;
> +
> + gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
> + while (gdesc->tcd.gen == tq->comp_ring.gen) {
> + completed += vmxnet3_unmap_pkt(gdesc->tcd.txdIdx, tq,
> + adapter->pdev, adapter);
> +
> + vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring);
> + gdesc = tq->comp_ring.base + tq->comp_ring.next2proc;
> + }
> +
> + if (completed) {
> + spin_lock(&tq->tx_lock);
> + if (unlikely(vmxnet3_tq_stopped(tq, adapter) &&
> + vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) >
> + VMXNET3_WAKE_QUEUE_THRESHOLD(tq) &&
> + netif_carrier_ok(adapter->netdev))) {
> + vmxnet3_tq_wake(tq, adapter);
> + }
> + spin_unlock(&tq->tx_lock);
> + }
> + return completed;
> +}
> +
> +
> +static void
> +vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter)
> +{
> + int i;
> +
> + while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) {
> + struct vmxnet3_tx_buf_info *tbi;
> + union Vmxnet3_GenericDesc *gdesc;
> +
> + tbi = tq->buf_info + tq->tx_ring.next2comp;
> + gdesc = tq->tx_ring.base + tq->tx_ring.next2comp;
> +
> + vmxnet3_unmap_tx_buf(tbi, adapter->pdev);
> + if (tbi->skb) {
> + dev_kfree_skb_any(tbi->skb);
> + tbi->skb = NULL;
> + }
> + vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring);
> + }
> +
> + /* sanity check, verify all buffers are indeed unmapped and freed */
> + for (i = 0; i < tq->tx_ring.size; i++) {
> + BUG_ON(tq->buf_info[i].skb != NULL ||
> + tq->buf_info[i].map_type != VMXNET3_MAP_NONE);
> + }
> +
> + tq->tx_ring.gen = VMXNET3_INIT_GEN;
> + tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
> +
> + tq->comp_ring.gen = VMXNET3_INIT_GEN;
> + tq->comp_ring.next2proc = 0;
> +}
> +
> +
> +void
> +vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter)
> +{
> + if (tq->tx_ring.base) {
> + pci_free_consistent(adapter->pdev, tq->tx_ring.size *
> + sizeof(struct Vmxnet3_TxDesc),
> + tq->tx_ring.base, tq->tx_ring.basePA);
> + tq->tx_ring.base = NULL;
> + }
> + if (tq->data_ring.base) {
> + pci_free_consistent(adapter->pdev, tq->data_ring.size *
> + sizeof(struct Vmxnet3_TxDataDesc),
> + tq->data_ring.base, tq->data_ring.basePA);
> + tq->data_ring.base = NULL;
> + }
> + if (tq->comp_ring.base) {
> + pci_free_consistent(adapter->pdev, tq->comp_ring.size *
> + sizeof(struct Vmxnet3_TxCompDesc),
> + tq->comp_ring.base, tq->comp_ring.basePA);
> + tq->comp_ring.base = NULL;
> + }
> + kfree(tq->buf_info);
> + tq->buf_info = NULL;
> +}
> +
> +
> +static void
> +vmxnet3_tq_init(struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter)
> +{
> + int i;
> +
> + /* reset the tx ring contents to 0 and reset the tx ring states */
> + memset(tq->tx_ring.base, 0, tq->tx_ring.size *
> + sizeof(struct Vmxnet3_TxDesc));
> + tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0;
> + tq->tx_ring.gen = VMXNET3_INIT_GEN;
> +
> + memset(tq->data_ring.base, 0, tq->data_ring.size *
> + sizeof(struct Vmxnet3_TxDataDesc));
> +
> + /* reset the tx comp ring contents to 0 and reset comp ring states */
> + memset(tq->comp_ring.base, 0, tq->comp_ring.size *
> + sizeof(struct Vmxnet3_TxCompDesc));
> + tq->comp_ring.next2proc = 0;
> + tq->comp_ring.gen = VMXNET3_INIT_GEN;
> +
> + /* reset the bookkeeping data */
> + memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size);
> + for (i = 0; i < tq->tx_ring.size; i++)
> + tq->buf_info[i].map_type = VMXNET3_MAP_NONE;
> +
> + /* stats are not reset */
> +}
> +
> +
> +static int
> +vmxnet3_tq_create(struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter)
> +{
> + BUG_ON(tq->tx_ring.base || tq->data_ring.base ||
> + tq->comp_ring.base || tq->buf_info);
> +
> + tq->tx_ring.base = pci_alloc_consistent(adapter->pdev, tq->tx_ring.size
> + * sizeof(struct Vmxnet3_TxDesc),
> + &tq->tx_ring.basePA);
> + if (!tq->tx_ring.base) {
> + printk(KERN_ERR "%s: failed to allocate tx ring\n",
> + adapter->netdev->name);
> + goto err;
> + }
> +
> + tq->data_ring.base = pci_alloc_consistent(adapter->pdev,
> + tq->data_ring.size *
> + sizeof(struct Vmxnet3_TxDataDesc),
> + &tq->data_ring.basePA);
> + if (!tq->data_ring.base) {
> + printk(KERN_ERR "%s: failed to allocate data ring\n",
> + adapter->netdev->name);
> + goto err;
> + }
> +
> + tq->comp_ring.base = pci_alloc_consistent(adapter->pdev,
> + tq->comp_ring.size *
> + sizeof(struct Vmxnet3_TxCompDesc),
> + &tq->comp_ring.basePA);
> + if (!tq->comp_ring.base) {
> + printk(KERN_ERR "%s: failed to allocate tx comp ring\n",
> + adapter->netdev->name);
> + goto err;
> + }
> +
> + tq->buf_info = kcalloc(tq->tx_ring.size, sizeof(tq->buf_info[0]),
> + GFP_KERNEL);
> + if (!tq->buf_info) {
> + printk(KERN_ERR "%s: failed to allocate tx bufinfo\n",
> + adapter->netdev->name);
> + goto err;
> + }
> +
> + return 0;
> +
> +err:
> + vmxnet3_tq_destroy(tq, adapter);
> + return -ENOMEM;
> +}
> +
> +
> +/*
> + * starting from ring->next2fill, allocate rx buffers for the given ring
> + * of the rx queue and update the rx desc. stop after @num_to_alloc buffers
> + * are allocated or allocation fails
> + */
> +
> +static int
> +vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx,
> + int num_to_alloc, struct vmxnet3_adapter *adapter)
> +{
> + int num_allocated = 0;
> + struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx];
> + struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx];
> + u32 val;
> +
> + while (num_allocated < num_to_alloc) {
> + struct vmxnet3_rx_buf_info *rbi;
> + union Vmxnet3_GenericDesc *gd;
> +
> + rbi = rbi_base + ring->next2fill;
> + gd = ring->base + ring->next2fill;
> +
> + if (rbi->buf_type == VMXNET3_RX_BUF_SKB) {
> + if (rbi->skb == NULL) {
> + rbi->skb = dev_alloc_skb(rbi->len +
> + NET_IP_ALIGN);
> + if (unlikely(rbi->skb == NULL)) {
> + rq->stats.rx_buf_alloc_failure++;
> + break;
> + }
> + rbi->skb->dev = adapter->netdev;
> +
> + skb_reserve(rbi->skb, NET_IP_ALIGN);
> + rbi->dma_addr = pci_map_single(adapter->pdev,
> + rbi->skb->data, rbi->len,
> + PCI_DMA_FROMDEVICE);
> + } else {
> + /* rx buffer skipped by the device */
> + }
> + val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT;
> + } else {
> + BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE ||
> + rbi->len != PAGE_SIZE);
> +
> + if (rbi->page == NULL) {
> + rbi->page = alloc_page(GFP_ATOMIC);
> + if (unlikely(rbi->page == NULL)) {
> + rq->stats.rx_buf_alloc_failure++;
> + break;
> + }
> + rbi->dma_addr = pci_map_page(adapter->pdev,
> + rbi->page, 0, PAGE_SIZE,
> + PCI_DMA_FROMDEVICE);
> + } else {
> + /* rx buffers skipped by the device */
> + }
> + val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT;
> + }
> +
> + BUG_ON(rbi->dma_addr == 0);
> + gd->rxd.addr = rbi->dma_addr;
> + gd->dword[2] = (ring->gen << VMXNET3_RXD_GEN_SHIFT) | val |
> + rbi->len;
> +
> + num_allocated++;
> + vmxnet3_cmd_ring_adv_next2fill(ring);
> + }
> + rq->uncommitted[ring_idx] += num_allocated;
> +
> + dprintk(KERN_ERR "alloc_rx_buf: %d allocated, next2fill %u, next2comp "
> + "%u, uncommited %u\n", num_allocated, ring->next2fill,
> + ring->next2comp, rq->uncommitted[ring_idx]);
> +
> + /* so that the device can distinguish a full ring and an empty ring */
> + BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp);
> +
> + return num_allocated;
> +}
> +
> +
> +static void
> +vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd,
> + struct vmxnet3_rx_buf_info *rbi)
> +{
> + struct skb_frag_struct *frag = skb_shinfo(skb)->frags +
> + skb_shinfo(skb)->nr_frags;
> +
> + BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS);
> +
> + frag->page = rbi->page;
> + frag->page_offset = 0;
> + frag->size = rcd->len;
> + skb->data_len += frag->size;
> + skb_shinfo(skb)->nr_frags++;
> +}
> +
> +
> +static void
> +vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx,
> + struct vmxnet3_tx_queue *tq, struct pci_dev *pdev,
> + struct vmxnet3_adapter *adapter)
> +{
> + u32 dw2, len;
> + unsigned long buf_offset;
> + int i;
> + union Vmxnet3_GenericDesc *gdesc;
> + struct vmxnet3_tx_buf_info *tbi = NULL;
> +
> + BUG_ON(ctx->copy_size > skb_headlen(skb));
> +
> + /* use the previous gen bit for the SOP desc */
> + dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT;
> +
> + ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill;
> + gdesc = ctx->sop_txd; /* both loops below can be skipped */
> +
> + /* no need to map the buffer if headers are copied */
> + if (ctx->copy_size) {
> + ctx->sop_txd->txd.addr = tq->data_ring.basePA +
> + tq->tx_ring.next2fill *
> + sizeof(struct Vmxnet3_TxDataDesc);
> + ctx->sop_txd->dword[2] = dw2 | ctx->copy_size;
> + ctx->sop_txd->dword[3] = 0;
> +
> + tbi = tq->buf_info + tq->tx_ring.next2fill;
> + tbi->map_type = VMXNET3_MAP_NONE;
> +
> + dprintk(KERN_ERR "txd[%u]: 0x%Lx 0x%x 0x%x\n",
> + tq->tx_ring.next2fill, ctx->sop_txd->txd.addr,
> + ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]);
> + vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
> +
> + /* use the right gen for non-SOP desc */
> + dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
> + }
> +
> + /* linear part can use multiple tx desc if it's big */
> + len = skb_headlen(skb) - ctx->copy_size;
> + buf_offset = ctx->copy_size;
> + while (len) {
> + u32 buf_size;
> +
> + buf_size = len > VMXNET3_MAX_TX_BUF_SIZE ?
> + VMXNET3_MAX_TX_BUF_SIZE : len;
> +
> + tbi = tq->buf_info + tq->tx_ring.next2fill;
> + tbi->map_type = VMXNET3_MAP_SINGLE;
> + tbi->dma_addr = pci_map_single(adapter->pdev,
> + skb->data + buf_offset, buf_size,
> + PCI_DMA_TODEVICE);
> +
> + tbi->len = buf_size; /* this automatically convert 2^14 to 0 */
> +
> + gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
> + BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
> +
> + gdesc->txd.addr = tbi->dma_addr;
> + gdesc->dword[2] = dw2 | buf_size;
> + gdesc->dword[3] = 0;
> +
> + dprintk(KERN_ERR "txd[%u]: 0x%Lx 0x%x 0x%x\n",
> + tq->tx_ring.next2fill, gdesc->txd.addr,
> + gdesc->dword[2], gdesc->dword[3]);
> + vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
> + dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
> +
> + len -= buf_size;
> + buf_offset += buf_size;
> + }
> +
> + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
> + struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
> +
> + tbi = tq->buf_info + tq->tx_ring.next2fill;
> + tbi->map_type = VMXNET3_MAP_PAGE;
> + tbi->dma_addr = pci_map_page(adapter->pdev, frag->page,
> + frag->page_offset, frag->size,
> + PCI_DMA_TODEVICE);
> +
> + tbi->len = frag->size;
> +
> + gdesc = tq->tx_ring.base + tq->tx_ring.next2fill;
> + BUG_ON(gdesc->txd.gen == tq->tx_ring.gen);
> +
> + gdesc->txd.addr = tbi->dma_addr;
> + gdesc->dword[2] = dw2 | frag->size;
> + gdesc->dword[3] = 0;
> +
> + dprintk(KERN_ERR "txd[%u]: 0x%llu %u %u\n",
> + tq->tx_ring.next2fill, gdesc->txd.addr,
> + gdesc->dword[2], gdesc->dword[3]);
> + vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring);
> + dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT;
> + }
> +
> + ctx->eop_txd = gdesc;
> +
> + /* set the last buf_info for the pkt */
> + tbi->skb = skb;
> + tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base;
> +}
> +
> +
> +/*
> + * parse and copy relevant protocol headers:
> + * For a tso pkt, relevant headers are L2/3/4 including options
> + * For a pkt requesting csum offloading, they are L2/3 and may include L4
> + * if it's a TCP/UDP pkt
> + *
> + * Returns:
> + * -1: error happens during parsing
> + * 0: protocol headers parsed, but too big to be copied
> + * 1: protocol headers parsed and copied
> + *
> + * Other effects:
> + * 1. related *ctx fields are updated.
> + * 2. ctx->copy_size is # of bytes copied
> + * 3. the portion copied is guaranteed to be in the linear part
> + *
> + */
> +static int
> +vmxnet3_parse_and_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_tx_ctx *ctx,
> + struct vmxnet3_adapter *adapter)
> +{
> + struct Vmxnet3_TxDataDesc *tdd;
> +
> + if (ctx->mss) {
> + ctx->eth_ip_hdr_size = skb_transport_offset(skb);
> + ctx->l4_hdr_size = ((struct tcphdr *)
> + skb_transport_header(skb))->doff * 4;
> + ctx->copy_size = ctx->eth_ip_hdr_size + ctx->l4_hdr_size;
> + } else {
> + unsigned int pull_size;
> +
> + if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + ctx->eth_ip_hdr_size = skb_transport_offset(skb);
> +
> + if (ctx->ipv4) {
> + struct iphdr *iph = (struct iphdr *)
> + skb_network_header(skb);
> + if (iph->protocol == IPPROTO_TCP) {
> + pull_size = ctx->eth_ip_hdr_size +
> + sizeof(struct tcphdr);
> +
> + if (unlikely(!pskb_may_pull(skb,
> + pull_size))) {
> + goto err;
> + }
> + ctx->l4_hdr_size = ((struct tcphdr *)
> + skb_transport_header(skb))->doff * 4;
> + } else if (iph->protocol == IPPROTO_UDP) {
> + ctx->l4_hdr_size =
> + sizeof(struct udphdr);
> + } else {
> + ctx->l4_hdr_size = 0;
> + }
> + } else {
> + /* for simplicity, don't copy L4 headers */
> + ctx->l4_hdr_size = 0;
> + }
> + ctx->copy_size = ctx->eth_ip_hdr_size +
> + ctx->l4_hdr_size;
> + } else {
> + ctx->eth_ip_hdr_size = 0;
> + ctx->l4_hdr_size = 0;
> + /* copy as much as allowed */
> + ctx->copy_size = min((unsigned int)VMXNET3_HDR_COPY_SIZE
> + , skb_headlen(skb));
> + }
> +
> + /* make sure headers are accessible directly */
> + if (unlikely(!pskb_may_pull(skb, ctx->copy_size)))
> + goto err;
> + }
> +
> + if (unlikely(ctx->copy_size > VMXNET3_HDR_COPY_SIZE)) {
> + tq->stats.oversized_hdr++;
> + ctx->copy_size = 0;
> + return 0;
> + }
> +
> + tdd = tq->data_ring.base + tq->tx_ring.next2fill;
> +
> + memcpy(tdd->data, skb->data, ctx->copy_size);
> + dprintk(KERN_ERR "copy %u bytes to dataRing[%u]\n",
> + ctx->copy_size, tq->tx_ring.next2fill);
> + return 1;
> +
> +err:
> + return -1;
> +}
> +
> +
> +static void
> +vmxnet3_prepare_tso(struct sk_buff *skb,
> + struct vmxnet3_tx_ctx *ctx)
> +{
> + struct tcphdr *tcph = (struct tcphdr *)skb_transport_header(skb);
> + if (ctx->ipv4) {
> + struct iphdr *iph = (struct iphdr *)skb_network_header(skb);
> + iph->check = 0;
> + tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0,
> + IPPROTO_TCP, 0);
> + } else {
> + struct ipv6hdr *iph = (struct ipv6hdr *)skb_network_header(skb);
> + tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0,
> + IPPROTO_TCP, 0);
> + }
> +}
> +
> +
> +/*
> + * Transmits a pkt thru a given tq
> + * Returns:
> + * NETDEV_TX_OK: descriptors are setup successfully
> + * NETDEV_TX_OK: error occured, the pkt is dropped
> + * NETDEV_TX_BUSY: tx ring is full, queue is stopped
> + *
> + * Side-effects:
> + * 1. tx ring may be changed
> + * 2. tq stats may be updated accordingly
> + * 3. shared->txNumDeferred may be updated
> + */
> +
> +static int
> +vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter, struct net_device *netdev)
> +{
> + int ret;
> + u32 count;
> + unsigned long flags;
> + struct vmxnet3_tx_ctx ctx;
> + union Vmxnet3_GenericDesc *gdesc;
> +
> + /* conservatively estimate # of descriptors to use */
> + count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) +
> + skb_shinfo(skb)->nr_frags + 1;
> +
> + ctx.ipv4 = (skb->protocol == __constant_ntohs(ETH_P_IP));
> +
> + ctx.mss = skb_shinfo(skb)->gso_size;
> + if (ctx.mss) {
> + if (skb_header_cloned(skb)) {
> + if (unlikely(pskb_expand_head(skb, 0, 0,
> + GFP_ATOMIC) != 0)) {
> + tq->stats.drop_tso++;
> + goto drop_pkt;
> + }
> + tq->stats.copy_skb_header++;
> + }
> + vmxnet3_prepare_tso(skb, &ctx);
> + } else {
> + if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) {
> +
> + /* non-tso pkts must not use more than
> + * VMXNET3_MAX_TXD_PER_PKT entries
> + */
> + if (skb_linearize(skb) != 0) {
> + tq->stats.drop_too_many_frags++;
> + goto drop_pkt;
> + }
> + tq->stats.linearized++;
> +
> + /* recalculate the # of descriptors to use */
> + count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1;
> + }
> + }
> +
> + ret = vmxnet3_parse_and_copy_hdr(skb, tq, &ctx, adapter);
> + if (ret >= 0) {
> + BUG_ON(ret <= 0 && ctx.copy_size != 0);
> + /* hdrs parsed, check against other limits */
> + if (ctx.mss) {
> + if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size >
> + VMXNET3_MAX_TX_BUF_SIZE)) {
> + goto hdr_too_big;
> + }
> + } else {
> + if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + if (unlikely(ctx.eth_ip_hdr_size +
> + skb->csum_offset >
> + VMXNET3_MAX_CSUM_OFFSET)) {
> + goto hdr_too_big;
> + }
> + }
> + }
> + } else {
> + tq->stats.drop_hdr_inspect_err++;
> + goto drop_pkt;
> + }
> +
> + spin_lock_irqsave(&tq->tx_lock, flags);
> +
> + if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) {
> + tq->stats.tx_ring_full++;
> + dprintk(KERN_ERR "tx queue stopped on %s, next2comp %u"
> + " next2fill %u\n", adapter->netdev->name,
> + tq->tx_ring.next2comp, tq->tx_ring.next2fill);
> +
> + vmxnet3_tq_stop(tq, adapter);
> + spin_unlock_irqrestore(&tq->tx_lock, flags);
> + return NETDEV_TX_BUSY;
> + }
> +
> + /* fill tx descs related to addr & len */
> + vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter);
> +
> + /* setup the EOP desc */
> + ctx.eop_txd->dword[3] = VMXNET3_TXD_CQ | VMXNET3_TXD_EOP;
> +
> + /* setup the SOP desc */
> + gdesc = ctx.sop_txd;
> + if (ctx.mss) {
> + gdesc->txd.hlen = ctx.eth_ip_hdr_size + ctx.l4_hdr_size;
> + gdesc->txd.om = VMXNET3_OM_TSO;
> + gdesc->txd.msscof = ctx.mss;
> + tq->shared->txNumDeferred += (skb->len - gdesc->txd.hlen +
> + ctx.mss - 1) / ctx.mss;
> + } else {
> + if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + gdesc->txd.hlen = ctx.eth_ip_hdr_size;
> + gdesc->txd.om = VMXNET3_OM_CSUM;
> + gdesc->txd.msscof = ctx.eth_ip_hdr_size +
> + skb->csum_offset;
> + } else {
> + gdesc->txd.om = 0;
> + gdesc->txd.msscof = 0;
> + }
> + tq->shared->txNumDeferred++;
> + }
> +
> + if (vlan_tx_tag_present(skb)) {
> + gdesc->txd.ti = 1;
> + gdesc->txd.tci = vlan_tx_tag_get(skb);
> + }
> +
> + wmb();
> +
> + /* finally flips the GEN bit of the SOP desc */
> + gdesc->dword[2] ^= VMXNET3_TXD_GEN;
> + dprintk(KERN_ERR "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n",
> + (u32)((union Vmxnet3_GenericDesc *)ctx.sop_txd -
> + tq->tx_ring.base), gdesc->txd.addr, gdesc->dword[2],
> + gdesc->dword[3]);
> +
> + spin_unlock_irqrestore(&tq->tx_lock, flags);
> +
> + if (tq->shared->txNumDeferred >= tq->shared->txThreshold) {
> + tq->shared->txNumDeferred = 0;
> + VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_TXPROD,
> + tq->tx_ring.next2fill);
> + }
> + netdev->trans_start = jiffies;
> +
> + return NETDEV_TX_OK;
> +
> +hdr_too_big:
> + tq->stats.drop_oversized_hdr++;
> +drop_pkt:
> + tq->stats.drop_total++;
> + dev_kfree_skb(skb);
> + return NETDEV_TX_OK;
> +}
> +
> +
> +static netdev_tx_t
> +vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + struct vmxnet3_tx_queue *tq = &adapter->tx_queue;
> +
> + return vmxnet3_tq_xmit(skb, tq, adapter, netdev);
> +}
> +
> +
> +static void
> +vmxnet3_rx_csum(struct vmxnet3_adapter *adapter,
> + struct sk_buff *skb,
> + union Vmxnet3_GenericDesc *gdesc)
> +{
> + if (!gdesc->rcd.cnc && adapter->rxcsum) {
> + /* typical case: TCP/UDP over IP and both csums are correct */
> + if ((gdesc->dword[3] & VMXNET3_RCD_CSUM_OK) ==
> + VMXNET3_RCD_CSUM_OK) {
> + skb->ip_summed = CHECKSUM_UNNECESSARY;
> + BUG_ON(!(gdesc->rcd.tcp || gdesc->rcd.udp));
> + BUG_ON(!(gdesc->rcd.v4 || gdesc->rcd.v6));
> + BUG_ON(gdesc->rcd.frg);
> + } else {
> + if (gdesc->rcd.csum) {
> + skb->csum = htons(gdesc->rcd.csum);
> + skb->ip_summed = CHECKSUM_PARTIAL;
> + } else {
> + skb->ip_summed = CHECKSUM_NONE;
> + }
> + }
> + } else {
> + skb->ip_summed = CHECKSUM_NONE;
> + }
> +}
> +
> +
> +static void
> +vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd,
> + struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter)
> +{
> + rq->stats.drop_err++;
> + if (!rcd->fcs)
> + rq->stats.drop_fcs++;
> +
> + rq->stats.drop_total++;
> +
> + /*
> + * We do not unmap and chain the rx buffer to the skb.
> + * We basically pretend this buffer is not used and will be recycled
> + * by vmxnet3_rq_alloc_rx_buf()
> + */
> +
> + /*
> + * ctx->skb may be NULL if this is the first and the only one
> + * desc for the pkt
> + */
> + if (ctx->skb)
> + dev_kfree_skb_irq(ctx->skb);
> +
> + ctx->skb = NULL;
> +}
> +
> +
> +static int
> +vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
> + struct vmxnet3_adapter *adapter, int quota)
> +{
> + static u32 rxprod_reg[2] = {VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2};
> + u32 num_rxd = 0;
> + struct Vmxnet3_RxCompDesc *rcd;
> + struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx;
> +
> + rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
> + while (rcd->gen == rq->comp_ring.gen) {
> + struct vmxnet3_rx_buf_info *rbi;
> + struct sk_buff *skb;
> + int num_to_alloc;
> + struct Vmxnet3_RxDesc *rxd;
> + u32 idx, ring_idx;
> +
> + if (num_rxd >= quota) {
> + /* we may stop even before we see the EOP desc of
> + * the current pkt
> + */
> + break;
> + }
> + num_rxd++;
> +
> + idx = rcd->rxdIdx;
> + ring_idx = rcd->rqID == rq->qid ? 0 : 1;
> +
> + rxd = &rq->rx_ring[ring_idx].base[idx].rxd;
> + rbi = rq->buf_info[ring_idx] + idx;
> +
> + BUG_ON(rxd->addr != rbi->dma_addr || rxd->len != rbi->len);
> +
> + if (unlikely(rcd->eop && rcd->err)) {
> + vmxnet3_rx_error(rq, rcd, ctx, adapter);
> + goto rcd_done;
> + }
> +
> + if (rcd->sop) { /* first buf of the pkt */
> + BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD ||
> + rcd->rqID != rq->qid);
> +
> + BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB);
> + BUG_ON(ctx->skb != NULL || rbi->skb == NULL);
> +
> + if (unlikely(rcd->len == 0)) {
> + /* Pretend the rx buffer is skipped. */
> + BUG_ON(!(rcd->sop && rcd->eop));
> + dprintk(KERN_ERR "rxRing[%u][%u] 0 length\n",
> + ring_idx, idx);
> + goto rcd_done;
> + }
> +
> + ctx->skb = rbi->skb;
> + rbi->skb = NULL;
> +
> + pci_unmap_single(adapter->pdev, rbi->dma_addr, rbi->len,
> + PCI_DMA_FROMDEVICE);
> +
> + skb_put(ctx->skb, rcd->len);
> + } else {
> + BUG_ON(ctx->skb == NULL);
> + /* non SOP buffer must be type 1 in most cases */
> + if (rbi->buf_type == VMXNET3_RX_BUF_PAGE) {
> + BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY);
> +
> + if (rcd->len) {
> + pci_unmap_page(adapter->pdev,
> + rbi->dma_addr, rbi->len,
> + PCI_DMA_FROMDEVICE);
> +
> + vmxnet3_append_frag(ctx->skb, rcd, rbi);
> + rbi->page = NULL;
> + }
> + } else {
> + /*
> + * The only time a non-SOP buffer is type 0 is
> + * when it's EOP and error flag is raised, which
> + * has already been handled.
> + */
> + BUG_ON(true);
> + }
> + }
> +
> + skb = ctx->skb;
> + if (rcd->eop) {
> + skb->len += skb->data_len;
> + skb->truesize += skb->data_len;
> +
> + vmxnet3_rx_csum(adapter, skb,
> + (union Vmxnet3_GenericDesc *)rcd);
> + skb->protocol = eth_type_trans(skb, adapter->netdev);
> +
> + if (unlikely(adapter->vlan_grp && rcd->ts)) {
> + vlan_hwaccel_receive_skb(skb,
> + adapter->vlan_grp, rcd->tci);
> + } else {
> + netif_receive_skb(skb);
> + }
> +
> + adapter->netdev->last_rx = jiffies;
> + ctx->skb = NULL;
> + }
> +
> +rcd_done:
> + /* device may skip some rx descs */
> + rq->rx_ring[ring_idx].next2comp = idx;
> + VMXNET3_INC_RING_IDX_ONLY(rq->rx_ring[ring_idx].next2comp,
> + rq->rx_ring[ring_idx].size);
> +
> + /* refill rx buffers frequently to avoid starving the h/w */
> + num_to_alloc = vmxnet3_cmd_ring_desc_avail(rq->rx_ring +
> + ring_idx);
> + if (unlikely(num_to_alloc > VMXNET3_RX_ALLOC_THRESHOLD(rq,
> + ring_idx, adapter))) {
> + vmxnet3_rq_alloc_rx_buf(rq, ring_idx, num_to_alloc,
> + adapter);
> +
> + /* if needed, update the register */
> + if (unlikely(rq->shared->updateRxProd)) {
> + VMXNET3_WRITE_BAR0_REG(adapter,
> + rxprod_reg[ring_idx] + rq->qid * 8,
> + rq->rx_ring[ring_idx].next2fill);
> + rq->uncommitted[ring_idx] = 0;
> + }
> + }
> +
> + vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring);
> + rcd = &rq->comp_ring.base[rq->comp_ring.next2proc].rcd;
> + }
> +
> + return num_rxd;
> +}
> +
> +
> +static void
> +vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq,
> + struct vmxnet3_adapter *adapter)
> +{
> + u32 i, ring_idx;
> + struct Vmxnet3_RxDesc *rxd;
> +
> + for (ring_idx = 0; ring_idx < 2; ring_idx++) {
> + for (i = 0; i < rq->rx_ring[ring_idx].size; i++) {
> + rxd = &rq->rx_ring[ring_idx].base[i].rxd;
> +
> + if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD &&
> + rq->buf_info[ring_idx][i].skb) {
> + pci_unmap_single(adapter->pdev, rxd->addr,
> + rxd->len, PCI_DMA_FROMDEVICE);
> + dev_kfree_skb(rq->buf_info[ring_idx][i].skb);
> + rq->buf_info[ring_idx][i].skb = NULL;
> + } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY &&
> + rq->buf_info[ring_idx][i].page) {
> + pci_unmap_page(adapter->pdev, rxd->addr,
> + rxd->len, PCI_DMA_FROMDEVICE);
> + put_page(rq->buf_info[ring_idx][i].page);
> + rq->buf_info[ring_idx][i].page = NULL;
> + }
> + }
> +
> + rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN;
> + rq->rx_ring[ring_idx].next2fill =
> + rq->rx_ring[ring_idx].next2comp = 0;
> + rq->uncommitted[ring_idx] = 0;
> + }
> +
> + rq->comp_ring.gen = VMXNET3_INIT_GEN;
> + rq->comp_ring.next2proc = 0;
> +}
> +
> +
> +void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
> + struct vmxnet3_adapter *adapter)
> +{
> + int i;
> + int j;
> +
> + /* all rx buffers must have already been freed */
> + for (i = 0; i < 2; i++) {
> + if (rq->buf_info[i]) {
> + for (j = 0; j < rq->rx_ring[i].size; j++)
> + BUG_ON(rq->buf_info[i][j].page != NULL);
> + }
> + }
> +
> +
> + kfree(rq->buf_info[0]);
> +
> + for (i = 0; i < 2; i++) {
> + if (rq->rx_ring[i].base) {
> + pci_free_consistent(adapter->pdev, rq->rx_ring[i].size
> + * sizeof(struct Vmxnet3_RxDesc),
> + rq->rx_ring[i].base,
> + rq->rx_ring[i].basePA);
> + rq->rx_ring[i].base = NULL;
> + }
> + rq->buf_info[i] = NULL;
> + }
> +
> + if (rq->comp_ring.base) {
> + pci_free_consistent(adapter->pdev, rq->comp_ring.size *
> + sizeof(struct Vmxnet3_RxCompDesc),
> + rq->comp_ring.base, rq->comp_ring.basePA);
> + rq->comp_ring.base = NULL;
> + }
> +}
> +
> +
> +static int
> +vmxnet3_rq_init(struct vmxnet3_rx_queue *rq,
> + struct vmxnet3_adapter *adapter)
> +{
> + int i;
> +
> + /* initialize buf_info */
> + for (i = 0; i < rq->rx_ring[0].size; i++) {
> +
> + /* 1st buf for a pkt is skbuff */
> + if (i % adapter->rx_buf_per_pkt == 0) {
> + rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB;
> + rq->buf_info[0][i].len = adapter->skb_buf_size;
> + } else { /* subsequent bufs for a pkt is frag */
> + rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE;
> + rq->buf_info[0][i].len = PAGE_SIZE;
> + }
> + }
> + for (i = 0; i < rq->rx_ring[1].size; i++) {
> + rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE;
> + rq->buf_info[1][i].len = PAGE_SIZE;
> + }
> +
> + /* reset internal state and allocate buffers for both rings */
> + for (i = 0; i < 2; i++) {
> + rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0;
> + rq->uncommitted[i] = 0;
> +
> + memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size *
> + sizeof(struct Vmxnet3_RxDesc));
> + rq->rx_ring[i].gen = VMXNET3_INIT_GEN;
> + }
> + if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1,
> + adapter) == 0) {
> + /* at least has 1 rx buffer for the 1st ring */
> + return -ENOMEM;
> + }
> + vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter);
> +
> + /* reset the comp ring */
> + rq->comp_ring.next2proc = 0;
> + memset(rq->comp_ring.base, 0, rq->comp_ring.size *
> + sizeof(struct Vmxnet3_RxCompDesc));
> + rq->comp_ring.gen = VMXNET3_INIT_GEN;
> +
> + /* reset rxctx */
> + rq->rx_ctx.skb = NULL;
> +
> + /* stats are not reset */
> + return 0;
> +}
> +
> +
> +static int
> +vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter)
> +{
> + int i;
> + size_t sz;
> + struct vmxnet3_rx_buf_info *bi;
> +
> + for (i = 0; i < 2; i++) {
> +
> + sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc);
> + rq->rx_ring[i].base = pci_alloc_consistent(adapter->pdev, sz,
> + &rq->rx_ring[i].basePA);
> + if (!rq->rx_ring[i].base) {
> + printk(KERN_ERR "%s: failed to allocate rx ring %d\n",
> + adapter->netdev->name, i);
> + goto err;
> + }
> + }
> +
> + sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc);
> + rq->comp_ring.base = pci_alloc_consistent(adapter->pdev, sz,
> + &rq->comp_ring.basePA);
> + if (!rq->comp_ring.base) {
> + printk(KERN_ERR "%s: failed to allocate rx comp ring\n",
> + adapter->netdev->name);
> + goto err;
> + }
> +
> + sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size +
> + rq->rx_ring[1].size);
> + bi = kmalloc(sz, GFP_KERNEL);
> + if (!bi) {
> + printk(KERN_ERR "%s: failed to allocate rx bufinfo\n",
> + adapter->netdev->name);
> + goto err;
> + }
> + memset(bi, 0, sz);
> + rq->buf_info[0] = bi;
> + rq->buf_info[1] = bi + rq->rx_ring[0].size;
> +
> + return 0;
> +
> +err:
> + vmxnet3_rq_destroy(rq, adapter);
> + return -ENOMEM;
> +}
> +
> +
> +static void
> +vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget, int *txd_done,
> + int *rxd_done)
> +{
> + if (unlikely(adapter->shared->ecr))
> + vmxnet3_process_events(adapter);
> +
> + *txd_done = vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
> + *rxd_done = vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
> +}
> +
> +
> +static int
> +vmxnet3_poll(struct napi_struct *napi, int budget)
> +{
> + struct vmxnet3_adapter *adapter = container_of(napi,
> + struct vmxnet3_adapter, napi);
> + int rxd_done, txd_done;
> +
> + vmxnet3_do_poll(adapter, budget, &txd_done, &rxd_done);
> +
> + if (rxd_done < budget) {
> + napi_complete(napi);
> + vmxnet3_enable_intr(adapter, 0);
> + }
> + return rxd_done;
> +}
> +
> +
> +/* Interrupt handler for vmxnet3 */
> +static irqreturn_t
> +vmxnet3_intr(int irq, void *dev_id)
> +{
> + struct net_device *dev = dev_id;
> + struct vmxnet3_adapter *adapter = netdev_priv(dev);
> +
> + if (unlikely(adapter->intr.type == VMXNET3_IT_INTX)) {
> + u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR);
> + if (unlikely(icr == 0))
> + /* not ours */
> + return IRQ_NONE;
> + }
> +
> +
> + /* disable intr if needed */
> + if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE)
> + vmxnet3_disable_intr(adapter, 0);
> +
> + napi_schedule(&adapter->napi);
> +
> + return IRQ_HANDLED;
> +}
> +
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> +
> +
> +/* netpoll callback. */
> +static void
> +vmxnet3_netpoll(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + int irq;
> +
> + if (adapter->intr.type == VMXNET3_IT_MSIX)
> + irq = adapter->intr.msix_entries[0].vector;
> + else
> + irq = adapter->pdev->irq;
> +
> + disable_irq(irq);
> + vmxnet3_intr(irq, netdev);
> + enable_irq(irq);
> +}
> +#endif
> +
> +static int
> +vmxnet3_request_irqs(struct vmxnet3_adapter *adapter)
> +{
> + int err;
> +
> + if (adapter->intr.type == VMXNET3_IT_MSIX) {
> + /* we only use 1 MSI-X vector */
> + err = request_irq(adapter->intr.msix_entries[0].vector,
> + vmxnet3_intr, 0, adapter->netdev->name,
> + adapter->netdev);
> + } else if (adapter->intr.type == VMXNET3_IT_MSI) {
> + err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0,
> + adapter->netdev->name, adapter->netdev);
> + } else {
> + err = request_irq(adapter->pdev->irq, vmxnet3_intr,
> + IRQF_SHARED, adapter->netdev->name,
> + adapter->netdev);
> + }
> +
> + if (err)
> + printk(KERN_ERR "Failed to request irq %s (intr type:%d), error"
> + ":%d\n", adapter->netdev->name, adapter->intr.type, err);
> +
> +
> + if (!err) {
> + int i;
> + /* init our intr settings */
> + for (i = 0; i < adapter->intr.num_intrs; i++)
> + adapter->intr.mod_levels[i] = UPT1_IML_ADAPTIVE;
> +
> + /* next setup intr index for all intr sources */
> + adapter->tx_queue.comp_ring.intr_idx = 0;
> + adapter->rx_queue.comp_ring.intr_idx = 0;
> + adapter->intr.event_intr_idx = 0;
> +
> + printk(KERN_INFO "%s: intr type %u, mode %u, %u vectors "
> + "allocated\n", adapter->netdev->name, adapter->intr.type,
> + adapter->intr.mask_mode, adapter->intr.num_intrs);
> + }
> +
> + return err;
> +}
> +
> +
> +static void
> +vmxnet3_free_irqs(struct vmxnet3_adapter *adapter)
> +{
> + BUG_ON(adapter->intr.type == VMXNET3_IT_AUTO ||
> + adapter->intr.num_intrs <= 0);
> +
> + switch (adapter->intr.type) {
> + case VMXNET3_IT_MSIX:
> + {
> + int i;
> +
> + for (i = 0; i < adapter->intr.num_intrs; i++)
> + free_irq(adapter->intr.msix_entries[i].vector,
> + adapter->netdev);
> + break;
> + }
> + case VMXNET3_IT_MSI:
> + free_irq(adapter->pdev->irq, adapter->netdev);
> + break;
> + case VMXNET3_IT_INTX:
> + free_irq(adapter->pdev->irq, adapter->netdev);
> + break;
> + default:
> + BUG_ON(true);
> + }
> +}
> +
> +
> +static void
> +vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + struct Vmxnet3_DriverShared *shared = adapter->shared;
> + u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
> +
> + if (grp) {
> + /* add vlan rx stripping. */
> + if (adapter->netdev->features & NETIF_F_HW_VLAN_RX) {
> + int i;
> + struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
> + adapter->vlan_grp = grp;
> +
> + /* update FEATURES to device */
> + devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_FEATURE);
> + /*
> + * Clear entire vfTable; then enable untagged pkts.
> + * Note: setting one entry in vfTable to non-zero turns
> + * on VLAN rx filtering.
> + */
> + for (i = 0; i < VMXNET3_VFT_SIZE; i++)
> + vfTable[i] = 0;
> +
> + VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_VLAN_FILTERS);
> + } else {
> + printk(KERN_ERR "%s: vlan_rx_register when device has "
> + "no NETIF_F_HW_VLAN_RX\n", netdev->name);
> + }
> + } else {
> + /* remove vlan rx stripping. */
> + struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
> + adapter->vlan_grp = NULL;
> +
> + if (devRead->misc.uptFeatures & UPT1_F_RXVLAN) {
> + int i;
> +
> + for (i = 0; i < VMXNET3_VFT_SIZE; i++) {
> + /* clear entire vfTable; this also disables
> + * VLAN rx filtering
> + */
> + vfTable[i] = 0;
> + }
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_VLAN_FILTERS);
> +
> + /* update FEATURES to device */
> + devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_FEATURE);
> + }
> + }
> +}
> +
> +
> +static void
> +vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter)
> +{
> + if (adapter->vlan_grp) {
> + u16 vid;
> + u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
> + bool activeVlan = false;
> +
> + for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
> + if (vlan_group_get_device(adapter->vlan_grp, vid)) {
> + VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
> + activeVlan = true;
> + }
> + }
> + if (activeVlan) {
> + /* continue to allow untagged pkts */
> + VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0);
> + }
> + }
> +}
> +
> +
> +static void
> +vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
> +
> + VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_VLAN_FILTERS);
> +}
> +
> +
> +static void
> +vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
> +
> + VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid);
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_VLAN_FILTERS);
> +}
> +
> +
> +static u8 *
> +vmxnet3_copy_mc(struct net_device *netdev)
> +{
> + u8 *buf = NULL;
> + u32 sz = netdev->mc_count * ETH_ALEN;
> +
> + /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */
> + if (sz <= 0xffff) {
> + /* We may be called with BH disabled */
> + buf = kmalloc(sz, GFP_ATOMIC);
> + if (buf) {
> + int i;
> + struct dev_mc_list *mc = netdev->mc_list;
> +
> + for (i = 0; i < netdev->mc_count; i++) {
> + BUG_ON(!mc);
> + memcpy(buf + i * ETH_ALEN, mc->dmi_addr,
> + ETH_ALEN);
> + mc = mc->next;
> + }
> + }
> + }
> + return buf;
> +}
> +
> +
> +static void
> +vmxnet3_set_mc(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + struct Vmxnet3_RxFilterConf *rxConf =
> + &adapter->shared->devRead.rxFilterConf;
> + u8 *new_table = NULL;
> + u32 new_mode = VMXNET3_RXM_UCAST;
> +
> + if (netdev->flags & IFF_PROMISC)
> + new_mode |= VMXNET3_RXM_PROMISC;
> +
> + if (netdev->flags & IFF_BROADCAST)
> + new_mode |= VMXNET3_RXM_BCAST;
> +
> + if (netdev->flags & IFF_ALLMULTI)
> + new_mode |= VMXNET3_RXM_ALL_MULTI;
> + else
> + if (netdev->mc_count > 0) {
> + new_table = vmxnet3_copy_mc(netdev);
> + if (new_table) {
> + new_mode |= VMXNET3_RXM_MCAST;
> + rxConf->mfTableLen = netdev->mc_count *
> + ETH_ALEN;
> + rxConf->mfTablePA = virt_to_phys(new_table);
> + } else {
> + printk(KERN_INFO "%s: failed to copy mcast list"
> + ", setting ALL_MULTI\n", netdev->name);
> + new_mode |= VMXNET3_RXM_ALL_MULTI;
> + }
> + }
> +
> +
> + if (!(new_mode & VMXNET3_RXM_MCAST)) {
> + rxConf->mfTableLen = 0;
> + rxConf->mfTablePA = 0;
> + }
> +
> + if (new_mode != rxConf->rxMode) {
> + rxConf->rxMode = new_mode;
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_RX_MODE);
> + }
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_MAC_FILTERS);
> +
> + kfree(new_table);
> +}
> +
> +
> +/*
> + * Set up driver_shared based on settings in adapter.
> + */
> +
> +static void
> +vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter)
> +{
> + struct Vmxnet3_DriverShared *shared = adapter->shared;
> + struct Vmxnet3_DSDevRead *devRead = &shared->devRead;
> + struct Vmxnet3_TxQueueConf *tqc;
> + struct Vmxnet3_RxQueueConf *rqc;
> + int i;
> +
> + memset(shared, 0, sizeof(*shared));
> +
> + /* driver settings */
> + shared->magic = VMXNET3_REV1_MAGIC;
> + devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
> + devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ?
> + VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64);
> + devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX;
> + devRead->misc.driverInfo.vmxnet3RevSpt = 1;
> + devRead->misc.driverInfo.uptVerSpt = 1;
> +
> + devRead->misc.ddPA = virt_to_phys(adapter);
> + devRead->misc.ddLen = sizeof(struct vmxnet3_adapter);
> +
> + /* set up feature flags */
> + if (adapter->rxcsum)
> + devRead->misc.uptFeatures |= UPT1_F_RXCSUM;
> +
> + if (adapter->lro) {
> + devRead->misc.uptFeatures |= UPT1_F_LRO;
> + devRead->misc.maxNumRxSG = 1 + MAX_SKB_FRAGS;
> + }
> + if ((adapter->netdev->features & NETIF_F_HW_VLAN_RX)
> + && adapter->vlan_grp) {
> + devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
> + }
> +
> + devRead->misc.mtu = adapter->netdev->mtu;
> + devRead->misc.queueDescPA = adapter->queue_desc_pa;
> + devRead->misc.queueDescLen = sizeof(struct Vmxnet3_TxQueueDesc) +
> + sizeof(struct Vmxnet3_RxQueueDesc);
> +
> + /* tx queue settings */
> + BUG_ON(adapter->tx_queue.tx_ring.base == NULL);
> +
> + devRead->misc.numTxQueues = 1;
> + tqc = &adapter->tqd_start->conf;
> + tqc->txRingBasePA = adapter->tx_queue.tx_ring.basePA;
> + tqc->dataRingBasePA = adapter->tx_queue.data_ring.basePA;
> + tqc->compRingBasePA = adapter->tx_queue.comp_ring.basePA;
> + tqc->ddPA = virt_to_phys(adapter->tx_queue.buf_info);
> + tqc->txRingSize = adapter->tx_queue.tx_ring.size;
> + tqc->dataRingSize = adapter->tx_queue.data_ring.size;
> + tqc->compRingSize = adapter->tx_queue.comp_ring.size;
> + tqc->ddLen = sizeof(struct vmxnet3_tx_buf_info) *
> + tqc->txRingSize;
> + tqc->intrIdx = adapter->tx_queue.comp_ring.intr_idx;
> +
> + /* rx queue settings */
> + devRead->misc.numRxQueues = 1;
> + rqc = &adapter->rqd_start->conf;
> + rqc->rxRingBasePA[0] = adapter->rx_queue.rx_ring[0].basePA;
> + rqc->rxRingBasePA[1] = adapter->rx_queue.rx_ring[1].basePA;
> + rqc->compRingBasePA = adapter->rx_queue.comp_ring.basePA;
> + rqc->ddPA = virt_to_phys(adapter->rx_queue.buf_info);
> + rqc->rxRingSize[0] = adapter->rx_queue.rx_ring[0].size;
> + rqc->rxRingSize[1] = adapter->rx_queue.rx_ring[1].size;
> + rqc->compRingSize = adapter->rx_queue.comp_ring.size;
> + rqc->ddLen = sizeof(struct vmxnet3_rx_buf_info) *
> + (rqc->rxRingSize[0] + rqc->rxRingSize[1]);
> + rqc->intrIdx = adapter->rx_queue.comp_ring.intr_idx;
> +
> + /* intr settings */
> + devRead->intrConf.autoMask = adapter->intr.mask_mode ==
> + VMXNET3_IMM_AUTO;
> + devRead->intrConf.numIntrs = adapter->intr.num_intrs;
> + for (i = 0; i < adapter->intr.num_intrs; i++)
> + devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i];
> +
> + devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx;
> +
> + /* rx filter settings */
> + devRead->rxFilterConf.rxMode = 0;
> + vmxnet3_restore_vlan(adapter);
> + /* the rest are already zeroed */
> +}
> +
> +
> +int
> +vmxnet3_activate_dev(struct vmxnet3_adapter *adapter)
> +{
> + int err;
> + u32 ret;
> +
> + dprintk(KERN_ERR "%s: skb_buf_size %d, rx_buf_per_pkt %d, ring sizes"
> + " %u %u %u\n", adapter->netdev->name, adapter->skb_buf_size,
> + adapter->rx_buf_per_pkt, adapter->tx_queue.tx_ring.size,
> + adapter->rx_queue.rx_ring[0].size,
> + adapter->rx_queue.rx_ring[1].size);
> +
> + vmxnet3_tq_init(&adapter->tx_queue, adapter);
> + err = vmxnet3_rq_init(&adapter->rx_queue, adapter);
> + if (err) {
> + printk(KERN_ERR "Failed to init rx queue for %s: error %d\n",
> + adapter->netdev->name, err);
> + goto rq_err;
> + }
> +
> + err = vmxnet3_request_irqs(adapter);
> + if (err) {
> + printk(KERN_ERR "Failed to setup irq for %s: error %d\n",
> + adapter->netdev->name, err);
> + goto irq_err;
> + }
> +
> + vmxnet3_setup_driver_shared(adapter);
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL,
> + VMXNET3_GET_ADDR_LO(adapter->shared_pa));
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH,
> + VMXNET3_GET_ADDR_HI(adapter->shared_pa));
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_ACTIVATE_DEV);
> + ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
> +
> + if (ret != 0) {
> + printk(KERN_ERR "Failed to activate dev %s: error %u\n",
> + adapter->netdev->name, ret);
> + err = -EINVAL;
> + goto activate_err;
> + }
> + VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD,
> + adapter->rx_queue.rx_ring[0].next2fill);
> + VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_RXPROD2,
> + adapter->rx_queue.rx_ring[1].next2fill);
> +
> + /* Apply the rx filter settins last. */
> + vmxnet3_set_mc(adapter->netdev);
> +
> + /*
> + * Check link state when first activating device. It will start the
> + * tx queue if the link is up.
> + */
> + vmxnet3_check_link(adapter);
> +
> + napi_enable(&adapter->napi);
> + vmxnet3_enable_all_intrs(adapter);
> + clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
> + return 0;
> +
> +activate_err:
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0);
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0);
> + vmxnet3_free_irqs(adapter);
> +irq_err:
> +rq_err:
> + /* free up buffers we allocated */
> + vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
> + return err;
> +}
> +
> +
> +void
> +vmxnet3_reset_dev(struct vmxnet3_adapter *adapter)
> +{
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
> +}
> +
> +
> +int
> +vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter)
> +{
> + if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state))
> + return 0;
> +
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_QUIESCE_DEV);
> + vmxnet3_disable_all_intrs(adapter);
> +
> + napi_disable(&adapter->napi);
> + netif_tx_disable(adapter->netdev);
> + adapter->link_speed = 0;
> + netif_carrier_off(adapter->netdev);
> +
> + vmxnet3_tq_cleanup(&adapter->tx_queue, adapter);
> + vmxnet3_rq_cleanup(&adapter->rx_queue, adapter);
> + vmxnet3_free_irqs(adapter);
> + return 0;
> +}
> +
> +
> +static void
> +vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
> +{
> + u32 tmp;
> +
> + tmp = *(u32 *)mac;
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp);
> +
> + tmp = (mac[5] << 8) | mac[4];
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp);
> +}
> +
> +
> +static int
> +vmxnet3_set_mac_addr(struct net_device *netdev, void *p)
> +{
> + struct sockaddr *addr = p;
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
> + vmxnet3_write_mac_addr(adapter, addr->sa_data);
> +
> + return 0;
> +}
> +
> +
> +/* ==================== initialization and cleanup routines ============ */
> +
> +static int
> +vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter, bool *dma64)
> +{
> + int err;
> + unsigned long mmio_start, mmio_len;
> + struct pci_dev *pdev = adapter->pdev;
> +
> + err = pci_enable_device(pdev);
> + if (err) {
> + printk(KERN_ERR "Failed to enable adapter %s: error %d\n",
> + pci_name(pdev), err);
> + return err;
> + }
> +
> + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
> + if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
> + printk(KERN_ERR "pci_set_consistent_dma_mask failed "
> + "for adapter %s\n", pci_name(pdev));
> + err = -EIO;
> + goto err_set_mask;
> + }
> + *dma64 = true;
> + } else {
> + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
> + printk(KERN_ERR "pci_set_dma_mask failed for adapter "
> + "%s\n", pci_name(pdev));
> + err = -EIO;
> + goto err_set_mask;
> + }
> + *dma64 = false;
> + }
> +
> + err = pci_request_selected_regions(pdev, (1 << 2) - 1,
> + vmxnet3_driver_name);
> + if (err) {
> + printk(KERN_ERR "Failed to request region for adapter %s: "
> + "error %d\n", pci_name(pdev), err);
> + goto err_set_mask;
> + }
> +
> + pci_set_master(pdev);
> +
> + mmio_start = pci_resource_start(pdev, 0);
> + mmio_len = pci_resource_len(pdev, 0);
> + adapter->hw_addr0 = ioremap(mmio_start, mmio_len);
> + if (!adapter->hw_addr0) {
> + printk(KERN_ERR "Failed to map bar0 for adapter %s\n",
> + pci_name(pdev));
> + err = -EIO;
> + goto err_ioremap;
> + }
> +
> + mmio_start = pci_resource_start(pdev, 1);
> + mmio_len = pci_resource_len(pdev, 1);
> + adapter->hw_addr1 = ioremap(mmio_start, mmio_len);
> + if (!adapter->hw_addr1) {
> + printk(KERN_ERR "Failed to map bar1 for adapter %s\n",
> + pci_name(pdev));
> + err = -EIO;
> + goto err_bar1;
> + }
> + return 0;
> +
> +err_bar1:
> + iounmap(adapter->hw_addr0);
> +err_ioremap:
> + pci_release_selected_regions(pdev, (1 << 2) - 1);
> +err_set_mask:
> + pci_disable_device(pdev);
> + return err;
> +}
> +
> +
> +static void
> +vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter)
> +{
> + BUG_ON(!adapter->pdev);
> +
> + iounmap(adapter->hw_addr0);
> + iounmap(adapter->hw_addr1);
> + pci_release_selected_regions(adapter->pdev, (1 << 2) - 1);
> + pci_disable_device(adapter->pdev);
> +}
> +
> +
> +static void
> +vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter)
> +{
> + size_t sz;
> +
> + if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE -
> + VMXNET3_MAX_ETH_HDR_SIZE) {
> + adapter->skb_buf_size = adapter->netdev->mtu +
> + VMXNET3_MAX_ETH_HDR_SIZE;
> + if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE)
> + adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE;
> +
> + adapter->rx_buf_per_pkt = 1;
> + } else {
> + adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE;
> + sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE +
> + VMXNET3_MAX_ETH_HDR_SIZE;
> + adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE;
> + }
> +
> + /*
> + * for simplicity, force the ring0 size to be a multiple of
> + * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
> + */
> + sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
> + adapter->rx_queue.rx_ring[0].size = (adapter->rx_queue.rx_ring[0].size +
> + sz - 1) / sz * sz;
> + adapter->rx_queue.rx_ring[0].size = min_t(u32,
> + adapter->rx_queue.rx_ring[0].size,
> + VMXNET3_RX_RING_MAX_SIZE / sz * sz);
> +}
> +
> +
> +int
> +vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size,
> + u32 rx_ring_size, u32 rx_ring2_size)
> +{
> + int err;
> +
> + adapter->tx_queue.tx_ring.size = tx_ring_size;
> + adapter->tx_queue.data_ring.size = tx_ring_size;
> + adapter->tx_queue.comp_ring.size = tx_ring_size;
> + adapter->tx_queue.shared = &adapter->tqd_start->ctrl;
> + adapter->tx_queue.stopped = true;
> + err = vmxnet3_tq_create(&adapter->tx_queue, adapter);
> + if (err)
> + return err;
> +
> + adapter->rx_queue.rx_ring[0].size = rx_ring_size;
> + adapter->rx_queue.rx_ring[1].size = rx_ring2_size;
> + vmxnet3_adjust_rx_ring_size(adapter);
> + adapter->rx_queue.comp_ring.size = adapter->rx_queue.rx_ring[0].size +
> + adapter->rx_queue.rx_ring[1].size;
> + adapter->rx_queue.qid = 0;
> + adapter->rx_queue.qid2 = 1;
> + adapter->rx_queue.shared = &adapter->rqd_start->ctrl;
> + err = vmxnet3_rq_create(&adapter->rx_queue, adapter);
> + if (err)
> + vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
> +
> + return err;
> +}
> +
> +static int
> +vmxnet3_open(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter;
> + int err;
> +
> + adapter = netdev_priv(netdev);
> +
> + spin_lock_init(&adapter->tx_queue.tx_lock);
> +
> + err = vmxnet3_create_queues(adapter, VMXNET3_DEF_TX_RING_SIZE,
> + VMXNET3_DEF_RX_RING_SIZE,
> + VMXNET3_DEF_RX_RING_SIZE);
> + if (err)
> + goto queue_err;
> +
> + err = vmxnet3_activate_dev(adapter);
> + if (err)
> + goto activate_err;
> +
> + return 0;
> +
> +activate_err:
> + vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
> + vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
> +queue_err:
> + return err;
> +}
> +
> +
> +static int
> +vmxnet3_close(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + /*
> + * Reset_work may be in the middle of resetting the device, wait for its
> + * completion.
> + */
> + while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
> + msleep(1);
> +
> + vmxnet3_quiesce_dev(adapter);
> +
> + vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
> + vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
> +
> + clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
> +
> +
> + return 0;
> +}
> +
> +
> +void
> +vmxnet3_force_close(struct vmxnet3_adapter *adapter)
> +{
> + /*
> + * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise
> + * vmxnet3_close() will deadlock.
> + */
> + BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state));
> +
> + /* we need to enable NAPI, otherwise dev_close will deadlock */
> + napi_enable(&adapter->napi);
> + dev_close(adapter->netdev);
> +}
> +
> +
> +static int
> +vmxnet3_change_mtu(struct net_device *netdev, int new_mtu)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + int err = 0;
> +
> + if (new_mtu < VMXNET3_MIN_MTU || new_mtu > VMXNET3_MAX_MTU)
> + return -EINVAL;
> +
> + if (new_mtu > 1500 && !adapter->jumbo_frame)
> + return -EINVAL;
> +
> + netdev->mtu = new_mtu;
> +
> + /*
> + * Reset_work may be in the middle of resetting the device, wait for its
> + * completion.
> + */
> + while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
> + msleep(1);
> +
> + if (netif_running(netdev)) {
> + vmxnet3_quiesce_dev(adapter);
> + vmxnet3_reset_dev(adapter);
> +
> + /* we need to re-create the rx queue based on the new mtu */
> + vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
> + vmxnet3_adjust_rx_ring_size(adapter);
> + adapter->rx_queue.comp_ring.size =
> + adapter->rx_queue.rx_ring[0].size +
> + adapter->rx_queue.rx_ring[1].size;
> + err = vmxnet3_rq_create(&adapter->rx_queue, adapter);
> + if (err) {
> + printk(KERN_ERR "%s: failed to re-create rx queue,"
> + " error %d. Closing it.\n", netdev->name, err);
> + goto out;
> + }
> +
> + err = vmxnet3_activate_dev(adapter);
> + if (err) {
> + printk(KERN_ERR "%s: failed to re-activate, error %d. "
> + "Closing it\n", netdev->name, err);
> + goto out;
> + }
> + }
> +
> +out:
> + clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
> + if (err)
> + vmxnet3_force_close(adapter);
> +
> + return err;
> +}
> +
> +
> +static void
> +vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64)
> +{
> + struct net_device *netdev = adapter->netdev;
> +
> + netdev->features = NETIF_F_SG |
> + NETIF_F_HW_CSUM |
> + NETIF_F_HW_VLAN_TX |
> + NETIF_F_HW_VLAN_RX |
> + NETIF_F_HW_VLAN_FILTER |
> + NETIF_F_TSO |
> + NETIF_F_TSO6 |
> + NETIF_F_LRO;
> +
> + printk(KERN_INFO "features: sg csum vlan jf tso tsoIPv6 lro");
> +
> + adapter->rxcsum = true;
> + adapter->jumbo_frame = true;
> + adapter->lro = true;
> +
> + if (dma64) {
> + netdev->features |= NETIF_F_HIGHDMA;
> + printk(" highDMA");
> + }
> +
> + netdev->vlan_features = netdev->features;
> + printk("\n");
> +}
> +
> +
> +static void
> +vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac)
> +{
> + u32 tmp;
> +
> + tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL);
> + *(u32 *)mac = tmp;
> +
> + tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH);
> + mac[4] = tmp & 0xff;
> + mac[5] = (tmp >> 8) & 0xff;
> +}
> +
> +
> +static void
> +vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
> +{
> + u32 cfg;
> +
> + /* intr settings */
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_GET_CONF_INTR);
> + cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD);
> + adapter->intr.type = cfg & 0x3;
> + adapter->intr.mask_mode = (cfg >> 2) & 0x3;
> +
> + if (adapter->intr.type == VMXNET3_IT_AUTO) {
> + int err;
> +
> + adapter->intr.msix_entries[0].entry = 0;
> + err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries,
> + VMXNET3_LINUX_MAX_MSIX_VECT);
> + if (!err) {
> + adapter->intr.num_intrs = 1;
> + adapter->intr.type = VMXNET3_IT_MSIX;
> + return;
> + }
> +
> + err = pci_enable_msi(adapter->pdev);
> + if (!err) {
> + adapter->intr.num_intrs = 1;
> + adapter->intr.type = VMXNET3_IT_MSI;
> + return;
> + }
> + }
> +
> + adapter->intr.type = VMXNET3_IT_INTX;
> +
> + /* INT-X related setting */
> + adapter->intr.num_intrs = 1;
> +}
> +
> +
> +static void
> +vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter)
> +{
> + if (adapter->intr.type == VMXNET3_IT_MSIX)
> + pci_disable_msix(adapter->pdev);
> + else if (adapter->intr.type == VMXNET3_IT_MSI)
> + pci_disable_msi(adapter->pdev);
> + else
> + BUG_ON(adapter->intr.type != VMXNET3_IT_INTX);
> +}
> +
> +
> +static void
> +vmxnet3_tx_timeout(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + adapter->tx_timeout_count++;
> +
> + printk(KERN_ERR "%s: tx hang\n", adapter->netdev->name);
> + schedule_work(&adapter->work);
> +}
> +
> +
> +static void
> +vmxnet3_reset_work(struct work_struct *data)
> +{
> + struct vmxnet3_adapter *adapter;
> +
> + adapter = container_of(data, struct vmxnet3_adapter, work);
> +
> + /* if another thread is resetting the device, no need to proceed */
> + if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
> + return;
> +
> + /* if the device is closed, we must leave it alone */
> + if (netif_running(adapter->netdev)) {
> + printk(KERN_INFO "%s: resetting\n", adapter->netdev->name);
> + vmxnet3_quiesce_dev(adapter);
> + vmxnet3_reset_dev(adapter);
> + vmxnet3_activate_dev(adapter);
> + } else {
> + printk(KERN_INFO "%s: already closed\n", adapter->netdev->name);
> + }
> +
> + clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
> +}
> +
> +
> +static int __devinit
> +vmxnet3_probe_device(struct pci_dev *pdev,
> + const struct pci_device_id *id)
> +{
> + static const struct net_device_ops vmxnet3_netdev_ops = {
> + .ndo_open = vmxnet3_open,
> + .ndo_stop = vmxnet3_close,
> + .ndo_start_xmit = vmxnet3_xmit_frame,
> + .ndo_set_mac_address = vmxnet3_set_mac_addr,
> + .ndo_change_mtu = vmxnet3_change_mtu,
> + .ndo_get_stats = vmxnet3_get_stats,
> + .ndo_tx_timeout = vmxnet3_tx_timeout,
> + .ndo_set_multicast_list = vmxnet3_set_mc,
> + .ndo_vlan_rx_register = vmxnet3_vlan_rx_register,
> + .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid,
> + .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid,
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> + .ndo_poll_controller = vmxnet3_netpoll,
> +#endif
> + };
> + int err;
> + bool dma64 = false; /* stupid gcc */
> + u32 ver;
> + struct net_device *netdev;
> + struct vmxnet3_adapter *adapter;
> + u8 mac[ETH_ALEN];
> +
> + netdev = alloc_etherdev(sizeof(struct vmxnet3_adapter));
> + if (!netdev) {
> + printk(KERN_ERR "Failed to alloc ethernet device for adapter "
> + "%s\n", pci_name(pdev));
> + return -ENOMEM;
> + }
> +
> + pci_set_drvdata(pdev, netdev);
> + adapter = netdev_priv(netdev);
> + adapter->netdev = netdev;
> + adapter->pdev = pdev;
> +
> + adapter->shared = pci_alloc_consistent(adapter->pdev,
> + sizeof(struct Vmxnet3_DriverShared),
> + &adapter->shared_pa);
> + if (!adapter->shared) {
> + printk(KERN_ERR "Failed to allocate memory for %s\n",
> + pci_name(pdev));
> + err = -ENOMEM;
> + goto err_alloc_shared;
> + }
> +
> + adapter->tqd_start = pci_alloc_consistent(adapter->pdev,
> + sizeof(struct Vmxnet3_TxQueueDesc) +
> + sizeof(struct Vmxnet3_RxQueueDesc),
> + &adapter->queue_desc_pa);
> +
> + if (!adapter->tqd_start) {
> + printk(KERN_ERR "Failed to allocate memory for %s\n",
> + pci_name(pdev));
> + err = -ENOMEM;
> + goto err_alloc_queue_desc;
> + }
> + adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start
> + + 1);
> +
> + adapter->pm_conf = kmalloc(sizeof(struct Vmxnet3_PMConf), GFP_KERNEL);
> + if (adapter->pm_conf == NULL) {
> + printk(KERN_ERR "Failed to allocate memory for %s\n",
> + pci_name(pdev));
> + err = -ENOMEM;
> + goto err_alloc_pm;
> + }
> +
> + err = vmxnet3_alloc_pci_resources(adapter, &dma64);
> + if (err < 0)
> + goto err_alloc_pci;
> +
> + ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS);
> + if (ver & 1) {
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_VRRS, 1);
> + } else {
> + printk(KERN_ERR "Incompatible h/w version (0x%x) for adapter"
> + " %s\n", ver, pci_name(pdev));
> + err = -EBUSY;
> + goto err_ver;
> + }
> +
> + ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS);
> + if (ver & 1) {
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1);
> + } else {
> + printk(KERN_ERR "Incompatible upt version (0x%x) for "
> + "adapter %s\n", ver, pci_name(pdev));
> + err = -EBUSY;
> + goto err_ver;
> + }
> +
> + vmxnet3_declare_features(adapter, dma64);
> +
> + adapter->dev_number = atomic_read(&devices_found);
> + vmxnet3_alloc_intr_resources(adapter);
> +
> + vmxnet3_read_mac_addr(adapter, mac);
> + memcpy(netdev->dev_addr, mac, netdev->addr_len);
> +
> + netdev->netdev_ops = &vmxnet3_netdev_ops;
> + netdev->watchdog_timeo = 5 * HZ;
> + vmxnet3_set_ethtool_ops(netdev);
> +
> + INIT_WORK(&adapter->work, vmxnet3_reset_work);
> +
> + netif_napi_add(netdev, &adapter->napi, vmxnet3_poll, 64);
> + SET_NETDEV_DEV(netdev, &pdev->dev);
> + err = register_netdev(netdev);
> +
> + if (err) {
> + printk(KERN_ERR "Failed to register adapter %s\n",
> + pci_name(pdev));
> + goto err_register;
> + }
> +
> + set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state);
> + atomic_inc(&devices_found);
> + return 0;
> +
> +err_register:
> + vmxnet3_free_intr_resources(adapter);
> +err_ver:
> + vmxnet3_free_pci_resources(adapter);
> +err_alloc_pci:
> + kfree(adapter->pm_conf);
> +err_alloc_pm:
> + pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) +
> + sizeof(struct Vmxnet3_RxQueueDesc),
> + adapter->tqd_start, adapter->queue_desc_pa);
> +err_alloc_queue_desc:
> + pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
> + adapter->shared, adapter->shared_pa);
> +err_alloc_shared:
> + pci_set_drvdata(pdev, NULL);
> + free_netdev(netdev);
> + return err;
> +}
> +
> +
> +static void __devexit
> +vmxnet3_remove_device(struct pci_dev *pdev)
> +{
> + struct net_device *netdev = pci_get_drvdata(pdev);
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + flush_scheduled_work();
> +
> + unregister_netdev(netdev);
> +
> + vmxnet3_free_intr_resources(adapter);
> + vmxnet3_free_pci_resources(adapter);
> + kfree(adapter->pm_conf);
> + pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_TxQueueDesc) +
> + sizeof(struct Vmxnet3_RxQueueDesc),
> + adapter->tqd_start, adapter->queue_desc_pa);
> + pci_free_consistent(adapter->pdev, sizeof(struct Vmxnet3_DriverShared),
> + adapter->shared, adapter->shared_pa);
> + free_netdev(netdev);
> +}
> +
> +
> +#ifdef CONFIG_PM
> +
> +static int
> +vmxnet3_suspend(struct device *device)
> +{
> + struct pci_dev *pdev = to_pci_dev(device);
> + struct net_device *netdev = pci_get_drvdata(pdev);
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + struct Vmxnet3_PMConf *pmConf;
> + struct ethhdr *ehdr;
> + struct arphdr *ahdr;
> + u8 *arpreq;
> + struct in_device *in_dev;
> + struct in_ifaddr *ifa;
> + int i = 0;
> +
> + if (!netif_running(netdev))
> + return 0;
> +
> + vmxnet3_disable_all_intrs(adapter);
> +
> + netif_device_detach(netdev);
> + netif_stop_queue(netdev);
> +
> + /* Create wake-up filters. */
> + pmConf = adapter->pm_conf;
> + memset(pmConf, 0, sizeof(*pmConf));
> +
> + if (adapter->wol & WAKE_UCAST) {
> + pmConf->filters[i].patternSize = ETH_ALEN;
> + pmConf->filters[i].maskSize = 1;
> + memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN);
> + pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */
> +
> + pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
> + i++;
> + }
> +
> + if (adapter->wol & WAKE_ARP) {
> + in_dev = in_dev_get(netdev);
> + if (!in_dev)
> + goto skip_arp;
> +
> + ifa = (struct in_ifaddr *)in_dev->ifa_list;
> + if (!ifa)
> + goto skip_arp;
> +
> + pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/
> + sizeof(struct arphdr) + /* ARP header */
> + 2 * ETH_ALEN + /* 2 Ethernet addresses*/
> + 2 * sizeof(u32); /*2 IPv4 addresses */
> + pmConf->filters[i].maskSize =
> + (pmConf->filters[i].patternSize - 1) / 8 + 1;
> +
> + /* ETH_P_ARP in Ethernet header. */
> + ehdr = (struct ethhdr *)pmConf->filters[i].pattern;
> + ehdr->h_proto = htons(ETH_P_ARP);
> +
> + /* ARPOP_REQUEST in ARP header. */
> + ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN];
> + ahdr->ar_op = htons(ARPOP_REQUEST);
> + arpreq = (u8 *)(ahdr + 1);
> +
> + /* The Unicast IPv4 address in 'tip' field. */
> + arpreq += 2 * ETH_ALEN + sizeof(u32);
> + *(u32 *)arpreq = ifa->ifa_address;
> +
> + /* The mask for the relevant bits. */
> + pmConf->filters[i].mask[0] = 0x00;
> + pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */
> + pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */
> + pmConf->filters[i].mask[3] = 0x00;
> + pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */
> + pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */
> + in_dev_put(in_dev);
> +
> + pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER;
> + i++;
> + }
> +
> +skip_arp:
> + if (adapter->wol & WAKE_MAGIC)
> + pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC;
> +
> + pmConf->numFilters = i;
> +
> + adapter->shared->devRead.pmConfDesc.confVer = 1;
> + adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf);
> + adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf);
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_PMCFG);
> +
> + pci_save_state(pdev);
> + pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND),
> + adapter->wol);
> + pci_disable_device(pdev);
> + pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND));
> +
> + return 0;
> +}
> +
> +
> +static int
> +vmxnet3_resume(struct device *device)
> +{
> + int err;
> + struct pci_dev *pdev = to_pci_dev(device);
> + struct net_device *netdev = pci_get_drvdata(pdev);
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + struct Vmxnet3_PMConf *pmConf;
> +
> + if (!netif_running(netdev))
> + return 0;
> +
> + /* Destroy wake-up filters. */
> + pmConf = adapter->pm_conf;
> + memset(pmConf, 0, sizeof(*pmConf));
> +
> + adapter->shared->devRead.pmConfDesc.confVer = 1;
> + adapter->shared->devRead.pmConfDesc.confLen = sizeof(*pmConf);
> + adapter->shared->devRead.pmConfDesc.confPA = virt_to_phys(pmConf);
> +
> + netif_device_attach(netdev);
> + pci_set_power_state(pdev, PCI_D0);
> + pci_restore_state(pdev);
> + err = pci_enable_device_mem(pdev);
> + if (err != 0)
> + return err;
> +
> + pci_enable_wake(pdev, PCI_D0, 0);
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_PMCFG);
> + vmxnet3_enable_all_intrs(adapter);
> +
> + return 0;
> +}
> +
> +static struct dev_pm_ops vmxnet3_pm_ops = {
> + .suspend = vmxnet3_suspend,
> + .resume = vmxnet3_resume,
> +};
> +#endif
> +
> +static struct pci_driver vmxnet3_driver = {
> + .name = vmxnet3_driver_name,
> + .id_table = vmxnet3_pciid_table,
> + .probe = vmxnet3_probe_device,
> + .remove = __devexit_p(vmxnet3_remove_device),
> +#ifdef CONFIG_PM
> + .driver.pm = &vmxnet3_pm_ops,
> +#endif
> +};
> +
> +
> +static int __init
> +vmxnet3_init_module(void)
> +{
> + printk(KERN_INFO "%s - version %s\n", VMXNET3_DRIVER_DESC,
> + VMXNET3_DRIVER_VERSION_REPORT);
> + return pci_register_driver(&vmxnet3_driver);
> +}
> +
> +module_init(vmxnet3_init_module);
> +
> +
> +static void
> +vmxnet3_exit_module(void)
> +{
> + pci_unregister_driver(&vmxnet3_driver);
> +}
> +
> +module_exit(vmxnet3_exit_module);
> +
> +MODULE_AUTHOR("VMware, Inc.");
> +MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC);
> +MODULE_LICENSE("GPL v2");
> +MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING);
> diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
> new file mode 100644
> index 0000000..c2c15e4
> --- /dev/null
> +++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
> @@ -0,0 +1,566 @@
> +/*
> + * Linux driver for VMware's vmxnet3 ethernet NIC.
> + *
> + * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; version 2 of the License and no later version.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT. See the GNU General Public License for more
> + * details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * The full GNU General Public License is included in this distribution in
> + * the file called "COPYING".
> + *
> + * Maintained by: Shreyas Bhatewara <[email protected]>
> + *
> + */
> +
> +
> +#include "vmxnet3_int.h"
> +
> +struct vmxnet3_stat_desc {
> + char desc[ETH_GSTRING_LEN];
> + int offset;
> +};
> +
> +
> +static u32
> +vmxnet3_get_rx_csum(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + return adapter->rxcsum;
> +}
> +
> +
> +static int
> +vmxnet3_set_rx_csum(struct net_device *netdev, u32 val)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + if (adapter->rxcsum != val) {
> + adapter->rxcsum = val;
> + if (netif_running(netdev)) {
> + if (val)
> + adapter->shared->devRead.misc.uptFeatures |=
> + UPT1_F_RXCSUM;
> + else
> + adapter->shared->devRead.misc.uptFeatures &=
> + ~UPT1_F_RXCSUM;
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_FEATURE);
> + }
> + }
> + return 0;
> +}
> +
> +
> +/* per tq stats maintained by the device */
> +static const struct vmxnet3_stat_desc
> +vmxnet3_tq_dev_stats[] = {
> + /* description, offset */
> + { "TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
> + { "TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
> + { "ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
> + { "ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
> + { "mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
> + { "mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
> + { "bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
> + { "bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
> + { "pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
> + { "pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
> +};
> +
> +/* per tq stats maintained by the driver */
> +static const struct vmxnet3_stat_desc
> +vmxnet3_tq_driver_stats[] = {
> + /* description, offset */
> + {"drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
> + drop_total) },
> + { " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
> + drop_too_many_frags) },
> + { " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
> + drop_oversized_hdr) },
> + { " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
> + drop_hdr_inspect_err) },
> + { " tso", offsetof(struct vmxnet3_tq_driver_stats,
> + drop_tso) },
> + { "ring full", offsetof(struct vmxnet3_tq_driver_stats,
> + tx_ring_full) },
> + { "pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
> + linearized) },
> + { "hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
> + copy_skb_header) },
> + { "giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
> + oversized_hdr) },
> +};
> +
> +/* per rq stats maintained by the device */
> +static const struct vmxnet3_stat_desc
> +vmxnet3_rq_dev_stats[] = {
> + { "LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
> + { "LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
> + { "ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
> + { "ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
> + { "mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
> + { "mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
> + { "bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
> + { "bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
> + { "pkts rx out of buf", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
> + { "pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
> +};
> +
> +/* per rq stats maintained by the driver */
> +static const struct vmxnet3_stat_desc
> +vmxnet3_rq_driver_stats[] = {
> + /* description, offset */
> + { "drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
> + drop_total) },
> + { " err", offsetof(struct vmxnet3_rq_driver_stats,
> + drop_err) },
> + { " fcs", offsetof(struct vmxnet3_rq_driver_stats,
> + drop_fcs) },
> + { "rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
> + rx_buf_alloc_failure) },
> +};
> +
> +/* gloabl stats maintained by the driver */
> +static const struct vmxnet3_stat_desc
> +vmxnet3_global_stats[] = {
> + /* description, offset */
> + { "tx timeout count", offsetof(struct vmxnet3_adapter,
> + tx_timeout_count) }
> +};
> +
> +
> +struct net_device_stats *
> +vmxnet3_get_stats(struct net_device *netdev)
> +{
> + struct vmxnet3_adapter *adapter;
> + struct vmxnet3_tq_driver_stats *drvTxStats;
> + struct vmxnet3_rq_driver_stats *drvRxStats;
> + struct UPT1_TxStats *devTxStats;
> + struct UPT1_RxStats *devRxStats;
> + struct net_device_stats *net_stats = &netdev->stats;
> +
> + adapter = netdev_priv(netdev);
> +
> + /* Collect the dev stats into the shared area */
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
> +
> + /* Assuming that we have a single queue device */
> + devTxStats = &adapter->tqd_start->stats;
> + devRxStats = &adapter->rqd_start->stats;
> +
> + /* Get access to the driver stats per queue */
> + drvTxStats = &adapter->tx_queue.stats;
> + drvRxStats = &adapter->rx_queue.stats;
> +
> + memset(net_stats, 0, sizeof(*net_stats));
> +
> + net_stats->rx_packets = devRxStats->ucastPktsRxOK +
> + devRxStats->mcastPktsRxOK +
> + devRxStats->bcastPktsRxOK;
> +
> + net_stats->tx_packets = devTxStats->ucastPktsTxOK +
> + devTxStats->mcastPktsTxOK +
> + devTxStats->bcastPktsTxOK;
> +
> + net_stats->rx_bytes = devRxStats->ucastBytesRxOK +
> + devRxStats->mcastBytesRxOK +
> + devRxStats->bcastBytesRxOK;
> +
> + net_stats->tx_bytes = devTxStats->ucastBytesTxOK +
> + devTxStats->mcastBytesTxOK +
> + devTxStats->bcastBytesTxOK;
> +
> + net_stats->rx_errors = devRxStats->pktsRxError;
> + net_stats->tx_errors = devTxStats->pktsTxError;
> + net_stats->rx_dropped = drvRxStats->drop_total;
> + net_stats->tx_dropped = drvTxStats->drop_total;
> + net_stats->multicast = devRxStats->mcastPktsRxOK;
> +
> + return net_stats;
> +}
> +
> +static int
> +vmxnet3_get_sset_count(struct net_device *netdev, int sset)
> +{
> + switch (sset) {
> + case ETH_SS_STATS:
> + return ARRAY_SIZE(vmxnet3_tq_dev_stats) +
> + ARRAY_SIZE(vmxnet3_tq_driver_stats) +
> + ARRAY_SIZE(vmxnet3_rq_dev_stats) +
> + ARRAY_SIZE(vmxnet3_rq_driver_stats) +
> + ARRAY_SIZE(vmxnet3_global_stats);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +
> +static int
> +vmxnet3_get_regs_len(struct net_device *netdev)
> +{
> + return 20 * sizeof(u32);
> +}
> +
> +
> +static void
> +vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
> + drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
> +
> + strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
> + sizeof(drvinfo->version));
> + drvinfo->driver[sizeof(drvinfo->version) - 1] = '\0';
> +
> + strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
> + drvinfo->fw_version[sizeof(drvinfo->fw_version) - 1] = '\0';
> +
> + strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
> + ETHTOOL_BUSINFO_LEN);
> + drvinfo->n_stats = vmxnet3_get_sset_count(netdev, ETH_SS_STATS);
> + drvinfo->testinfo_len = 0;
> + drvinfo->eedump_len = 0;
> + drvinfo->regdump_len = vmxnet3_get_regs_len(netdev);
> +}
> +
> +
> +static void
> +vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
> +{
> + if (stringset == ETH_SS_STATS) {
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
> + memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
> + ETH_GSTRING_LEN);
> + buf += ETH_GSTRING_LEN;
> + }
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++) {
> + memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
> + ETH_GSTRING_LEN);
> + buf += ETH_GSTRING_LEN;
> + }
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
> + memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
> + ETH_GSTRING_LEN);
> + buf += ETH_GSTRING_LEN;
> + }
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++) {
> + memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
> + ETH_GSTRING_LEN);
> + buf += ETH_GSTRING_LEN;
> + }
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
> + memcpy(buf, vmxnet3_global_stats[i].desc,
> + ETH_GSTRING_LEN);
> + buf += ETH_GSTRING_LEN;
> + }
> + }
> +}
> +
> +static u32
> +vmxnet3_get_flags(struct net_device *netdev) {
> + return netdev->features;
> +}
> +
> +static int
> +vmxnet3_set_flags(struct net_device *netdev, u32 data) {
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + u8 lro_requested = (data & ETH_FLAG_LRO) == 0 ? 0 : 1;
> + u8 lro_present = (netdev->features & NETIF_F_LRO) == 0 ? 0 : 1;
> +
> + if (lro_requested ^ lro_present) {
> + /* toggle the LRO feature*/
> + netdev->features ^= NETIF_F_LRO;
> +
> + /* update harware LRO capability accordingly */
> + if (lro_requested)
> + adapter->shared->devRead.misc.uptFeatures &= UPT1_F_LRO;
> + else
> + adapter->shared->devRead.misc.uptFeatures &=
> + ~UPT1_F_LRO;
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> + VMXNET3_CMD_UPDATE_FEATURE);
> + }
> + return 0;
> +}
> +
> +static void
> +vmxnet3_get_ethtool_stats(struct net_device *netdev,
> + struct ethtool_stats *stats, u64 *buf)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + u8 *base;
> + int i;
> +
> + VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
> +
> + /* this does assume each counter is 64-bit wide */
> +
> + base = (u8 *)&adapter->tqd_start->stats;
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
> + *buf++ = *(u64 *)(base + vmxnet3_tq_dev_stats[i].offset);
> +
> + base = (u8 *)&adapter->tx_queue.stats;
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
> + *buf++ = *(u64 *)(base + vmxnet3_tq_driver_stats[i].offset);
> +
> + base = (u8 *)&adapter->rqd_start->stats;
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
> + *buf++ = *(u64 *)(base + vmxnet3_rq_dev_stats[i].offset);
> +
> + base = (u8 *)&adapter->rx_queue.stats;
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
> + *buf++ = *(u64 *)(base + vmxnet3_rq_driver_stats[i].offset);
> +
> + base = (u8 *)adapter;
> + for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
> + *buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
> +}
> +
> +
> +static void
> +vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + u32 *buf = p;
> +
> + memset(p, 0, vmxnet3_get_regs_len(netdev));
> +
> + regs->version = 1;
> +
> + /* Update vmxnet3_get_regs_len if we want to dump more registers */
> +
> + /* make each ring use multiple of 16 bytes */
> + buf[0] = adapter->tx_queue.tx_ring.next2fill;
> + buf[1] = adapter->tx_queue.tx_ring.next2comp;
> + buf[2] = adapter->tx_queue.tx_ring.gen;
> + buf[3] = 0;
> +
> + buf[4] = adapter->tx_queue.comp_ring.next2proc;
> + buf[5] = adapter->tx_queue.comp_ring.gen;
> + buf[6] = adapter->tx_queue.stopped;
> + buf[7] = 0;
> +
> + buf[8] = adapter->rx_queue.rx_ring[0].next2fill;
> + buf[9] = adapter->rx_queue.rx_ring[0].next2comp;
> + buf[10] = adapter->rx_queue.rx_ring[0].gen;
> + buf[11] = 0;
> +
> + buf[12] = adapter->rx_queue.rx_ring[1].next2fill;
> + buf[13] = adapter->rx_queue.rx_ring[1].next2comp;
> + buf[14] = adapter->rx_queue.rx_ring[1].gen;
> + buf[15] = 0;
> +
> + buf[16] = adapter->rx_queue.comp_ring.next2proc;
> + buf[17] = adapter->rx_queue.comp_ring.gen;
> + buf[18] = 0;
> + buf[19] = 0;
> +}
> +
> +
> +static void
> +vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
> + wol->wolopts = adapter->wol;
> +}
> +
> +
> +static int
> +vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
> + WAKE_MAGICSECURE)) {
> + return -EOPNOTSUPP;
> + }
> +
> + adapter->wol = wol->wolopts;
> +
> + device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
> +
> + return 0;
> +}
> +
> +
> +static int
> +vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
> + SUPPORTED_TP;
> + ecmd->advertising = ADVERTISED_TP;
> + ecmd->port = PORT_TP;
> + ecmd->transceiver = XCVR_INTERNAL;
> +
> + if (adapter->link_speed) {
> + ecmd->speed = adapter->link_speed;
> + ecmd->duplex = DUPLEX_FULL;
> + } else {
> + ecmd->speed = -1;
> + ecmd->duplex = -1;
> + }
> + return 0;
> +}
> +
> +
> +static void
> +vmxnet3_get_ringparam(struct net_device *netdev,
> + struct ethtool_ringparam *param)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> +
> + param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
> + param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
> + param->rx_mini_max_pending = 0;
> + param->rx_jumbo_max_pending = 0;
> +
> + param->rx_pending = adapter->rx_queue.rx_ring[0].size;
> + param->tx_pending = adapter->tx_queue.tx_ring.size;
> + param->rx_mini_pending = 0;
> + param->rx_jumbo_pending = 0;
> +}
> +
> +
> +static int
> +vmxnet3_set_ringparam(struct net_device *netdev,
> + struct ethtool_ringparam *param)
> +{
> + struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> + u32 new_tx_ring_size, new_rx_ring_size;
> + u32 sz;
> + int err = 0;
> +
> + if (param->tx_pending == 0 || param->tx_pending >
> + VMXNET3_TX_RING_MAX_SIZE)
> + return -EINVAL;
> +
> + if (param->rx_pending == 0 || param->rx_pending >
> + VMXNET3_RX_RING_MAX_SIZE)
> + return -EINVAL;
> +
> +
> + /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
> + new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
> + ~VMXNET3_RING_SIZE_MASK;
> + new_tx_ring_size = min_t(u32, new_tx_ring_size,
> + VMXNET3_TX_RING_MAX_SIZE);
> + if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
> + VMXNET3_RING_SIZE_ALIGN) != 0)
> + return -EINVAL;
> +
> + /* ring0 has to be a multiple of
> + * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
> + */
> + sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
> + new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
> + new_rx_ring_size = min_t(u32, new_rx_ring_size,
> + VMXNET3_RX_RING_MAX_SIZE / sz * sz);
> + if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
> + sz) != 0)
> + return -EINVAL;
> +
> + if (new_tx_ring_size == adapter->tx_queue.tx_ring.size &&
> + new_rx_ring_size == adapter->rx_queue.rx_ring[0].size) {
> + return 0;
> + }
> +
> + /*
> + * Reset_work may be in the middle of resetting the device, wait for its
> + * completion.
> + */
> + while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
> + msleep(1);
> +
> + if (netif_running(netdev)) {
> + vmxnet3_quiesce_dev(adapter);
> + vmxnet3_reset_dev(adapter);
> +
> + /* recreate the rx queue and the tx queue based on the
> + * new sizes */
> + vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
> + vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
> +
> + err = vmxnet3_create_queues(adapter, new_tx_ring_size,
> + new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE);
> + if (err) {
> + /* failed, most likely because of OOM, try default
> + * size */
> + printk(KERN_ERR "%s: failed to apply new sizes, try the"
> + " default ones\n", netdev->name);
> + err = vmxnet3_create_queues(adapter,
> + VMXNET3_DEF_TX_RING_SIZE,
> + VMXNET3_DEF_RX_RING_SIZE,
> + VMXNET3_DEF_RX_RING_SIZE);
> + if (err) {
> + printk(KERN_ERR "%s: failed to create queues "
> + "with default sizes. Closing it\n",
> + netdev->name);
> + goto out;
> + }
> + }
> +
> + err = vmxnet3_activate_dev(adapter);
> + if (err)
> + printk(KERN_ERR "%s: failed to re-activate, error %d."
> + " Closing it\n", netdev->name, err);
> + }
> +
> +out:
> + clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
> + if (err)
> + vmxnet3_force_close(adapter);
> +
> + return err;
> +}
> +
> +
> +static struct ethtool_ops vmxnet3_ethtool_ops = {
> + .get_settings = vmxnet3_get_settings,
> + .get_drvinfo = vmxnet3_get_drvinfo,
> + .get_regs_len = vmxnet3_get_regs_len,
> + .get_regs = vmxnet3_get_regs,
> + .get_wol = vmxnet3_get_wol,
> + .set_wol = vmxnet3_set_wol,
> + .get_link = ethtool_op_get_link,
> + .get_rx_csum = vmxnet3_get_rx_csum,
> + .set_rx_csum = vmxnet3_set_rx_csum,
> + .get_tx_csum = ethtool_op_get_tx_csum,
> + .set_tx_csum = ethtool_op_set_tx_hw_csum,
> + .get_sg = ethtool_op_get_sg,
> + .set_sg = ethtool_op_set_sg,
> + .get_tso = ethtool_op_get_tso,
> + .set_tso = ethtool_op_set_tso,
> + .get_strings = vmxnet3_get_strings,
> + .get_flags = vmxnet3_get_flags,
> + .set_flags = vmxnet3_set_flags,
> + .get_sset_count = vmxnet3_get_sset_count,
> + .get_ethtool_stats = vmxnet3_get_ethtool_stats,
> + .get_ringparam = vmxnet3_get_ringparam,
> + .set_ringparam = vmxnet3_set_ringparam,
> +};
> +
> +void vmxnet3_set_ethtool_ops(struct net_device *netdev)
> +{
> + SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
> +}
> diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
> new file mode 100644
> index 0000000..cf4b08d
> --- /dev/null
> +++ b/drivers/net/vmxnet3/vmxnet3_int.h
> @@ -0,0 +1,389 @@
> +/*
> + * Linux driver for VMware's vmxnet3 ethernet NIC.
> + *
> + * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; version 2 of the License and no later version.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT. See the GNU General Public License for more
> + * details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
> + *
> + * The full GNU General Public License is included in this distribution in
> + * the file called "COPYING".
> + *
> + * Maintained by: Shreyas Bhatewara <[email protected]>
> + *
> + */
> +
> +#ifndef _VMXNET3_INT_H
> +#define _VMXNET3_INT_H
> +
> +#include <linux/types.h>
> +#include <linux/ethtool.h>
> +#include <linux/delay.h>
> +#include <linux/netdevice.h>
> +#include <linux/pci.h>
> +#include <linux/ethtool.h>
> +#include <linux/compiler.h>
> +#include <linux/module.h>
> +#include <linux/moduleparam.h>
> +#include <linux/slab.h>
> +#include <linux/spinlock.h>
> +#include <linux/ioport.h>
> +#include <linux/highmem.h>
> +#include <linux/init.h>
> +#include <linux/timer.h>
> +#include <linux/skbuff.h>
> +#include <linux/interrupt.h>
> +#include <linux/workqueue.h>
> +#include <linux/uaccess.h>
> +#include <asm/dma.h>
> +#include <asm/page.h>
> +
> +#include <linux/tcp.h>
> +#include <linux/udp.h>
> +#include <linux/ip.h>
> +#include <linux/ipv6.h>
> +#include <linux/in.h>
> +#include <linux/etherdevice.h>
> +#include <asm/checksum.h>
> +#include <linux/if_vlan.h>
> +#include <linux/if_arp.h>
> +#include <linux/inetdevice.h>
> +#include <linux/dst.h>
> +
> +#include "vmxnet3_defs.h"
> +
> +#ifdef DEBUG
> +# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)"
> +#else
> +# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI"
> +#endif
> +
> +
> +/*
> + * Version numbers
> + */
> +#define VMXNET3_DRIVER_VERSION_STRING "1.0.4.0-k"
> +
> +/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
> +#define VMXNET3_DRIVER_VERSION_NUM 0x01000400
> +
> +
> +/*
> + * Capabilities
> + */
> +
> +enum {
> + VMNET_CAP_SG = 0x0001, /* Can do scatter-gather transmits. */
> + VMNET_CAP_IP4_CSUM = 0x0002, /* Can checksum only TCP/UDP over
> + * IPv4 */
> + VMNET_CAP_HW_CSUM = 0x0004, /* Can checksum all packets. */
> + VMNET_CAP_HIGH_DMA = 0x0008, /* Can DMA to high memory. */
> + VMNET_CAP_TOE = 0x0010, /* Supports TCP/IP offload. */
> + VMNET_CAP_TSO = 0x0020, /* Supports TCP Segmentation
> + * offload */
> + VMNET_CAP_SW_TSO = 0x0040, /* Supports SW TCP Segmentation */
> + VMNET_CAP_VMXNET_APROM = 0x0080, /* Vmxnet APROM support */
> + VMNET_CAP_HW_TX_VLAN = 0x0100, /* Can we do VLAN tagging in HW */
> + VMNET_CAP_HW_RX_VLAN = 0x0200, /* Can we do VLAN untagging in HW */
> + VMNET_CAP_SW_VLAN = 0x0400, /* VLAN tagging/untagging in SW */
> + VMNET_CAP_WAKE_PCKT_RCV = 0x0800, /* Can wake on network packet recv? */
> + VMNET_CAP_ENABLE_INT_INLINE = 0x1000, /* Enable Interrupt Inline */
> + VMNET_CAP_ENABLE_HEADER_COPY = 0x2000, /* copy header for vmkernel */
> + VMNET_CAP_TX_CHAIN = 0x4000, /* Guest can use multiple tx entries
> + * for a pkt */
> + VMNET_CAP_RX_CHAIN = 0x8000, /* pkt can span multiple rx entries */
> + VMNET_CAP_LPD = 0x10000, /* large pkt delivery */
> + VMNET_CAP_BPF = 0x20000, /* BPF Support in VMXNET Virtual HW*/
> + VMNET_CAP_SG_SPAN_PAGES = 0x40000, /* Scatter-gather can span multiple*/
> + /* pages transmits */
> + VMNET_CAP_IP6_CSUM = 0x80000, /* Can do IPv6 csum offload. */
> + VMNET_CAP_TSO6 = 0x100000, /* TSO seg. offload for IPv6 pkts. */
> + VMNET_CAP_TSO256k = 0x200000, /* Can do TSO seg offload for */
> + /* pkts up to 256kB. */
> + VMNET_CAP_UPT = 0x400000 /* Support UPT */
> +};
> +
> +/*
> + * PCI vendor and device IDs.
> + */
> +#define PCI_VENDOR_ID_VMWARE 0x15AD
> +#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0
> +#define MAX_ETHERNET_CARDS 10
> +#define MAX_PCI_PASSTHRU_DEVICE 6
> +
> +struct vmxnet3_cmd_ring {
> + union Vmxnet3_GenericDesc *base;
> + u32 size;
> + u32 next2fill;
> + u32 next2comp;
> + u8 gen;
> + dma_addr_t basePA;
> +};
> +
> +static inline void
> +vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring)
> +{
> + ring->next2fill++;
> + if (unlikely(ring->next2fill == ring->size)) {
> + ring->next2fill = 0;
> + VMXNET3_FLIP_RING_GEN(ring->gen);
> + }
> +}
> +
> +static inline void
> +vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring)
> +{
> + VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size);
> +}
> +
> +static inline int
> +vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
> +{
> + return (ring->next2comp > ring->next2fill ? 0 : ring->size) +
> + ring->next2comp - ring->next2fill - 1;
> +}
> +
> +struct vmxnet3_comp_ring {
> + union Vmxnet3_GenericDesc *base;
> + u32 size;
> + u32 next2proc;
> + u8 gen;
> + u8 intr_idx;
> + dma_addr_t basePA;
> +};
> +
> +static inline void
> +vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
> +{
> + ring->next2proc++;
> + if (unlikely(ring->next2proc == ring->size)) {
> + ring->next2proc = 0;
> + VMXNET3_FLIP_RING_GEN(ring->gen);
> + }
> +}
> +
> +struct vmxnet3_tx_data_ring {
> + struct Vmxnet3_TxDataDesc *base;
> + u32 size;
> + dma_addr_t basePA;
> +};
> +
> +enum vmxnet3_buf_map_type {
> + VMXNET3_MAP_INVALID = 0,
> + VMXNET3_MAP_NONE,
> + VMXNET3_MAP_SINGLE,
> + VMXNET3_MAP_PAGE,
> +};
> +
> +struct vmxnet3_tx_buf_info {
> + u32 map_type;
> + u16 len;
> + u16 sop_idx;
> + dma_addr_t dma_addr;
> + struct sk_buff *skb;
> +};
> +
> +struct vmxnet3_tq_driver_stats {
> + u64 drop_total; /* # of pkts dropped by the driver, the
> + * counters below track droppings due to
> + * different reasons
> + */
> + u64 drop_too_many_frags;
> + u64 drop_oversized_hdr;
> + u64 drop_hdr_inspect_err;
> + u64 drop_tso;
> +
> + u64 tx_ring_full;
> + u64 linearized; /* # of pkts linearized */
> + u64 copy_skb_header; /* # of times we have to copy skb header */
> + u64 oversized_hdr;
> +};
> +
> +struct vmxnet3_tx_ctx {
> + bool ipv4;
> + u16 mss;
> + u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum
> + * offloading
> + */
> + u32 l4_hdr_size; /* only valid if mss != 0 */
> + u32 copy_size; /* # of bytes copied into the data ring */
> + union Vmxnet3_GenericDesc *sop_txd;
> + union Vmxnet3_GenericDesc *eop_txd;
> +};
> +
> +struct vmxnet3_tx_queue {
> + spinlock_t tx_lock;
> + struct vmxnet3_cmd_ring tx_ring;
> + struct vmxnet3_tx_buf_info *buf_info;
> + struct vmxnet3_tx_data_ring data_ring;
> + struct vmxnet3_comp_ring comp_ring;
> + struct Vmxnet3_TxQueueCtrl *shared;
> + struct vmxnet3_tq_driver_stats stats;
> + bool stopped;
> + int num_stop; /* # of times the queue is
> + * stopped */
> +} __attribute__((__aligned__(SMP_CACHE_BYTES)));
> +
> +enum vmxnet3_rx_buf_type {
> + VMXNET3_RX_BUF_NONE = 0,
> + VMXNET3_RX_BUF_SKB = 1,
> + VMXNET3_RX_BUF_PAGE = 2
> +};
> +
> +struct vmxnet3_rx_buf_info {
> + enum vmxnet3_rx_buf_type buf_type;
> + u16 len;
> + union {
> + struct sk_buff *skb;
> + struct page *page;
> + };
> + dma_addr_t dma_addr;
> +};
> +
> +struct vmxnet3_rx_ctx {
> + struct sk_buff *skb;
> + u32 sop_idx;
> +};
> +
> +struct vmxnet3_rq_driver_stats {
> + u64 drop_total;
> + u64 drop_err;
> + u64 drop_fcs;
> + u64 rx_buf_alloc_failure;
> +};
> +
> +struct vmxnet3_rx_queue {
> + struct vmxnet3_cmd_ring rx_ring[2];
> + struct vmxnet3_comp_ring comp_ring;
> + struct vmxnet3_rx_ctx rx_ctx;
> + u32 qid; /* rqID in RCD for buffer from 1st ring */
> + u32 qid2; /* rqID in RCD for buffer from 2nd ring */
> + u32 uncommitted[2]; /* # of buffers allocated since last RXPROD
> + * update */
> + struct vmxnet3_rx_buf_info *buf_info[2];
> + struct Vmxnet3_RxQueueCtrl *shared;
> + struct vmxnet3_rq_driver_stats stats;
> +} __attribute__((__aligned__(SMP_CACHE_BYTES)));
> +
> +#define VMXNET3_LINUX_MAX_MSIX_VECT 1
> +
> +struct vmxnet3_intr {
> + enum vmxnet3_intr_mask_mode mask_mode;
> + enum vmxnet3_intr_type type; /* MSI-X, MSI, or INTx? */
> + u8 num_intrs; /* # of intr vectors */
> + u8 event_intr_idx; /* idx of the intr vector for event */
> + u8 mod_levels[VMXNET3_LINUX_MAX_MSIX_VECT]; /* moderation level */
> +#ifdef CONFIG_PCI_MSI
> + struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT];
> +#endif
> +};
> +
> +#define VMXNET3_STATE_BIT_RESETTING 0
> +#define VMXNET3_STATE_BIT_QUIESCED 1
> +struct vmxnet3_adapter {
> + struct vmxnet3_tx_queue tx_queue;
> + struct vmxnet3_rx_queue rx_queue;
> + struct napi_struct napi;
> + struct vlan_group *vlan_grp;
> +
> + struct vmxnet3_intr intr;
> +
> + struct Vmxnet3_DriverShared *shared;
> + struct Vmxnet3_PMConf *pm_conf;
> + struct Vmxnet3_TxQueueDesc *tqd_start; /* first tx queue desc */
> + struct Vmxnet3_RxQueueDesc *rqd_start; /* first rx queue desc */
> + struct net_device *netdev;
> + struct pci_dev *pdev;
> +
> + u8 *hw_addr0; /* for BAR 0 */
> + u8 *hw_addr1; /* for BAR 1 */
> +
> + /* feature control */
> + bool rxcsum;
> + bool lro;
> + bool jumbo_frame;
> +
> + /* rx buffer related */
> + unsigned skb_buf_size;
> + int rx_buf_per_pkt; /* only apply to the 1st ring */
> + dma_addr_t shared_pa;
> + dma_addr_t queue_desc_pa;
> +
> + /* Wake-on-LAN */
> + u32 wol;
> +
> + /* Link speed */
> + u32 link_speed; /* in mbps */
> +
> + u64 tx_timeout_count;
> + struct work_struct work;
> +
> + unsigned long state; /* VMXNET3_STATE_BIT_xxx */
> +
> + int dev_number;
> +};
> +
> +#define VMXNET3_WRITE_BAR0_REG(adapter, reg, val) \
> + writel((val), (adapter)->hw_addr0 + (reg))
> +#define VMXNET3_READ_BAR0_REG(adapter, reg) \
> + readl((adapter)->hw_addr0 + (reg))
> +
> +#define VMXNET3_WRITE_BAR1_REG(adapter, reg, val) \
> + writel((val), (adapter)->hw_addr1 + (reg))
> +#define VMXNET3_READ_BAR1_REG(adapter, reg) \
> + readl((adapter)->hw_addr1 + (reg))
> +
> +#define VMXNET3_WAKE_QUEUE_THRESHOLD(tq) (5)
> +#define VMXNET3_RX_ALLOC_THRESHOLD(rq, ring_idx, adapter) \
> + ((rq)->rx_ring[ring_idx].size >> 3)
> +
> +#define VMXNET3_GET_ADDR_LO(dma) ((u32)(dma))
> +#define VMXNET3_GET_ADDR_HI(dma) ((u32)(((u64)(dma)) >> 32))
> +
> +/* must be a multiple of VMXNET3_RING_SIZE_ALIGN */
> +#define VMXNET3_DEF_TX_RING_SIZE 512
> +#define VMXNET3_DEF_RX_RING_SIZE 256
> +
> +#define VMXNET3_MAX_ETH_HDR_SIZE 22
> +#define VMXNET3_MAX_SKB_BUF_SIZE (3*1024)
> +
> +int
> +vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
> +
> +int
> +vmxnet3_activate_dev(struct vmxnet3_adapter *adapter);
> +
> +void
> +vmxnet3_force_close(struct vmxnet3_adapter *adapter);
> +
> +void
> +vmxnet3_reset_dev(struct vmxnet3_adapter *adapter);
> +
> +void
> +vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
> + struct vmxnet3_adapter *adapter);
> +
> +void
> +vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
> + struct vmxnet3_adapter *adapter);
> +
> +int
> +vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
> + u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size);
> +
> +extern void vmxnet3_set_ethtool_ops(struct net_device *netdev);
> +extern struct net_device_stats *vmxnet3_get_stats(struct net_device *netdev);
> +
> +extern char vmxnet3_driver_name[];
> +#endif
>
On Thu, 8 Oct 2009 10:59:26 -0700 (PDT)
Shreyas Bhatewara <[email protected]> wrote:
> Hello all,
>
> I do not mean to be bothersome but this thread has been unusually silent.
> Could you please review the patch for me and reply with your comments /
> acks ?
>
> Thanks.
> ->Shreyas
Looks fine, but just a minor style nit (can be changed after insertion in mainline).
The code:
static void
vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget, int *txd_done,
int *rxd_done)
{
if (unlikely(adapter->shared->ecr))
vmxnet3_process_events(adapter);
*txd_done = vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
*rxd_done = vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
}
static int
vmxnet3_poll(struct napi_struct *napi, int budget)
{
struct vmxnet3_adapter *adapter = container_of(napi,
struct vmxnet3_adapter, napi);
int rxd_done, txd_done;
vmxnet3_do_poll(adapter, budget, &txd_done, &rxd_done);
if (rxd_done < budget) {
napi_complete(napi);
vmxnet3_enable_intr(adapter, 0);
}
return rxd_done;
}
Is simpler if you just have do_poll return rx done value. Probably Gcc
inline's it all anyway.
static int
vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget)
{
if (unlikely(adapter->shared->ecr))
vmxnet3_process_events(adapter);
vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
return vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter, budget);
}
static int
vmxnet3_poll(struct napi_struct *napi, int budget)
{
struct vmxnet3_adapter *adapter = container_of(napi,
struct vmxnet3_adapter, napi);
int rxd_done;
rxd_done = vmxnet3_do_poll(adapter, budget);
if (rxd_done < budget) {
napi_complete(napi);
vmxnet3_enable_intr(adapter, 0);
}
return rxd_done;
}
> -----Original Message-----
> From: Stephen Hemminger [mailto:[email protected]]
> Sent: Friday, October 09, 2009 2:36 PM
> To: Shreyas Bhatewara
> Cc: linux-kernel; netdev; David S. Miller; Jeff Garzik; Anthony
> Liguori; Chris Wright; Greg Kroah-Hartman; Andrew Morton;
> virtualization; pv-drivers
> Subject: Re: [PATCH 2.6.32-rc3] net: VMware virtual Ethernet NIC
> driver: vmxnet3
>
> On Thu, 8 Oct 2009 10:59:26 -0700 (PDT)
> Shreyas Bhatewara <[email protected]> wrote:
>
> > Hello all,
> >
> > I do not mean to be bothersome but this thread has been unusually
> silent.
> > Could you please review the patch for me and reply with your comments
> /
> > acks ?
> >
> > Thanks.
> > ->Shreyas
>
>
> Looks fine, but just a minor style nit (can be changed after insertion
> in mainline).
>
> The code:
>
> static void
> vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget, int
> *txd_done,
> int *rxd_done)
> {
> if (unlikely(adapter->shared->ecr))
> vmxnet3_process_events(adapter);
>
> *txd_done = vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
> *rxd_done = vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter,
> budget);
> }
>
>
> static int
> vmxnet3_poll(struct napi_struct *napi, int budget)
> {
> struct vmxnet3_adapter *adapter = container_of(napi,
> struct vmxnet3_adapter, napi);
> int rxd_done, txd_done;
>
> vmxnet3_do_poll(adapter, budget, &txd_done, &rxd_done);
>
> if (rxd_done < budget) {
> napi_complete(napi);
> vmxnet3_enable_intr(adapter, 0);
> }
> return rxd_done;
> }
>
>
> Is simpler if you just have do_poll return rx done value. Probably Gcc
> inline's it all anyway.
>
> static int
> vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget)
> {
> if (unlikely(adapter->shared->ecr))
> vmxnet3_process_events(adapter);
>
> vmxnet3_tq_tx_complete(&adapter->tx_queue, adapter);
> return vmxnet3_rq_rx_complete(&adapter->rx_queue, adapter,
> budget);
> }
>
>
> static int
> vmxnet3_poll(struct napi_struct *napi, int budget)
> {
> struct vmxnet3_adapter *adapter = container_of(napi,
> struct vmxnet3_adapter, napi);
> int rxd_done;
>
> rxd_done = vmxnet3_do_poll(adapter, budget);
> if (rxd_done < budget) {
> napi_complete(napi);
> vmxnet3_enable_intr(adapter, 0);
> }
> return rxd_done;
> }
Thanks Stephen.
Yes, the vmxnet3_do_poll() was an inline function in the very first patch. It was thought of as a better idea to let gcc handle the inlining.
I will piggyback this nit on a forthcoming change.
->Shreyas