Reset a port's resources only if they're actually in an error state
Signed-off-by: Thomas Klein <[email protected]>
---
Patch created against 2.6.34-rc4
diff -Nurp linux-2.6.34-rc4.orig//drivers/net/ehea/ehea_main.c linux-2.6.34-rc4//drivers/net/ehea/ehea_main.c
--- linux-2.6.34-rc4.orig//drivers/net/ehea/ehea_main.c 2010-04-19 11:54:07.000000000 +0200
+++ linux-2.6.34-rc4//drivers/net/ehea/ehea_main.c 2010-04-19 11:55:43.000000000 +0200
@@ -791,11 +791,17 @@ static struct ehea_cqe *ehea_proc_cqes(s
cqe_counter++;
rmb();
if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
- ehea_error("Send Completion Error: Resetting port");
+ ehea_error("Bad send completion status=0x%04X",
+ cqe->status);
+
if (netif_msg_tx_err(pr->port))
ehea_dump(cqe, sizeof(*cqe), "Send CQE");
- ehea_schedule_port_reset(pr->port);
- break;
+
+ if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
+ ehea_error("Resetting port");
+ ehea_schedule_port_reset(pr->port);
+ break;
+ }
}
if (netif_msg_tx_done(pr->port))
@@ -901,6 +907,8 @@ static irqreturn_t ehea_qp_aff_irq_handl
struct ehea_eqe *eqe;
struct ehea_qp *qp;
u32 qp_token;
+ u64 resource_type, aer, aerr;
+ int reset_port = 0;
eqe = ehea_poll_eq(port->qp_eq);
@@ -910,11 +918,24 @@ static irqreturn_t ehea_qp_aff_irq_handl
eqe->entry, qp_token);
qp = port->port_res[qp_token].qp;
- ehea_error_data(port->adapter, qp->fw_handle);
+
+ resource_type = ehea_error_data(port->adapter, qp->fw_handle,
+ &aer, &aerr);
+
+ if (resource_type == EHEA_AER_RESTYPE_QP) {
+ if ((aer & EHEA_AER_RESET_MASK) ||
+ (aerr & EHEA_AERR_RESET_MASK))
+ reset_port = 1;
+ } else
+ reset_port = 1; /* Reset in case of CQ or EQ error */
+
eqe = ehea_poll_eq(port->qp_eq);
}
- ehea_schedule_port_reset(port);
+ if (reset_port) {
+ ehea_error("Resetting port");
+ ehea_schedule_port_reset(port);
+ }
return IRQ_HANDLED;
}
diff -Nurp linux-2.6.34-rc4.orig//drivers/net/ehea/ehea_qmr.c linux-2.6.34-rc4//drivers/net/ehea/ehea_qmr.c
--- linux-2.6.34-rc4.orig//drivers/net/ehea/ehea_qmr.c 2010-04-19 11:54:07.000000000 +0200
+++ linux-2.6.34-rc4//drivers/net/ehea/ehea_qmr.c 2010-04-19 11:56:36.000000000 +0200
@@ -229,14 +229,14 @@ u64 ehea_destroy_cq_res(struct ehea_cq *
int ehea_destroy_cq(struct ehea_cq *cq)
{
- u64 hret;
+ u64 hret, aer, aerr;
if (!cq)
return 0;
hcp_epas_dtor(&cq->epas);
hret = ehea_destroy_cq_res(cq, NORMAL_FREE);
if (hret == H_R_STATE) {
- ehea_error_data(cq->adapter, cq->fw_handle);
+ ehea_error_data(cq->adapter, cq->fw_handle, &aer, &aerr);
hret = ehea_destroy_cq_res(cq, FORCE_FREE);
}
@@ -357,7 +357,7 @@ u64 ehea_destroy_eq_res(struct ehea_eq *
int ehea_destroy_eq(struct ehea_eq *eq)
{
- u64 hret;
+ u64 hret, aer, aerr;
if (!eq)
return 0;
@@ -365,7 +365,7 @@ int ehea_destroy_eq(struct ehea_eq *eq)
hret = ehea_destroy_eq_res(eq, NORMAL_FREE);
if (hret == H_R_STATE) {
- ehea_error_data(eq->adapter, eq->fw_handle);
+ ehea_error_data(eq->adapter, eq->fw_handle, &aer, &aerr);
hret = ehea_destroy_eq_res(eq, FORCE_FREE);
}
@@ -540,7 +540,7 @@ u64 ehea_destroy_qp_res(struct ehea_qp *
int ehea_destroy_qp(struct ehea_qp *qp)
{
- u64 hret;
+ u64 hret, aer, aerr;
if (!qp)
return 0;
@@ -548,7 +548,7 @@ int ehea_destroy_qp(struct ehea_qp *qp)
hret = ehea_destroy_qp_res(qp, NORMAL_FREE);
if (hret == H_R_STATE) {
- ehea_error_data(qp->adapter, qp->fw_handle);
+ ehea_error_data(qp->adapter, qp->fw_handle, &aer, &aerr);
hret = ehea_destroy_qp_res(qp, FORCE_FREE);
}
@@ -986,42 +986,45 @@ void print_error_data(u64 *data)
if (length > EHEA_PAGESIZE)
length = EHEA_PAGESIZE;
- if (type == 0x8) /* Queue Pair */
+ if (type == EHEA_AER_RESTYPE_QP)
ehea_error("QP (resource=%llX) state: AER=0x%llX, AERR=0x%llX, "
"port=%llX", resource, data[6], data[12], data[22]);
-
- if (type == 0x4) /* Completion Queue */
+ else if (type == EHEA_AER_RESTYPE_CQ)
ehea_error("CQ (resource=%llX) state: AER=0x%llX", resource,
data[6]);
-
- if (type == 0x3) /* Event Queue */
+ else if (type == EHEA_AER_RESTYPE_EQ)
ehea_error("EQ (resource=%llX) state: AER=0x%llX", resource,
data[6]);
ehea_dump(data, length, "error data");
}
-void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle)
+u64 ehea_error_data(struct ehea_adapter *adapter, u64 res_handle,
+ u64 *aer, u64 *aerr)
{
unsigned long ret;
u64 *rblock;
+ u64 type = 0;
rblock = (void *)get_zeroed_page(GFP_KERNEL);
if (!rblock) {
ehea_error("Cannot allocate rblock memory.");
- return;
+ goto out;
}
- ret = ehea_h_error_data(adapter->handle,
- res_handle,
- rblock);
+ ret = ehea_h_error_data(adapter->handle, res_handle, rblock);
- if (ret == H_R_STATE)
- ehea_error("No error data is available: %llX.", res_handle);
- else if (ret == H_SUCCESS)
+ if (ret == H_SUCCESS) {
+ type = EHEA_BMASK_GET(ERROR_DATA_TYPE, rblock[2]);
+ *aer = rblock[6];
+ *aerr = rblock[12];
print_error_data(rblock);
- else
+ } else if (ret == H_R_STATE) {
+ ehea_error("No error data available: %llX.", res_handle);
+ } else
ehea_error("Error data could not be fetched: %llX", res_handle);
free_page((unsigned long)rblock);
+out:
+ return type;
}
diff -Nurp linux-2.6.34-rc4.orig//drivers/net/ehea/ehea_qmr.h linux-2.6.34-rc4//drivers/net/ehea/ehea_qmr.h
--- linux-2.6.34-rc4.orig//drivers/net/ehea/ehea_qmr.h 2010-04-19 11:54:07.000000000 +0200
+++ linux-2.6.34-rc4//drivers/net/ehea/ehea_qmr.h 2010-04-19 11:57:12.000000000 +0200
@@ -154,6 +154,9 @@ struct ehea_rwqe {
#define EHEA_CQE_STAT_ERR_IP 0x2000
#define EHEA_CQE_STAT_ERR_CRC 0x1000
+/* Defines which bad send cqe stati lead to a port reset */
+#define EHEA_CQE_STAT_RESET_MASK 0x0002
+
struct ehea_cqe {
u64 wr_id; /* work request ID from WQE */
u8 type;
@@ -187,6 +190,14 @@ struct ehea_cqe {
#define EHEA_EQE_SM_MECH_NUMBER EHEA_BMASK_IBM(48, 55)
#define EHEA_EQE_SM_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
+#define EHEA_AER_RESTYPE_QP 0x8
+#define EHEA_AER_RESTYPE_CQ 0x4
+#define EHEA_AER_RESTYPE_EQ 0x3
+
+/* Defines which affiliated errors lead to a port reset */
+#define EHEA_AER_RESET_MASK 0xFFFFFFFFFEFFFFFFULL
+#define EHEA_AERR_RESET_MASK 0xFFFFFFFFFFFFFFFFULL
+
struct ehea_eqe {
u64 entry;
};
@@ -379,7 +390,8 @@ int ehea_gen_smr(struct ehea_adapter *ad
int ehea_rem_mr(struct ehea_mr *mr);
-void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
+u64 ehea_error_data(struct ehea_adapter *adapter, u64 res_handle,
+ u64 *aer, u64 *aerr);
int ehea_add_sect_bmap(unsigned long pfn, unsigned long nr_pages);
int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages);
From: Thomas Klein <[email protected]>
Date: Mon, 19 Apr 2010 14:08:11 +0200
> Reset a port's resources only if they're actually in an error state
>
> Signed-off-by: Thomas Klein <[email protected]>
> ---
>
> Patch created against 2.6.34-rc4
There are several problems with these patches:
1) They are corrupted by your email client, lines unchanged
begin with one space character instead of two. Therefore
even 'patch' wouldn't accept these changes.
2) The double slash in the patch file paths make git not
accept the change. Please don't put double-slashes in
your patch paths as that canonically means "/".
3) These are not appropriate for net-2.6 as we are deep in
the -rcX series at this point and only the most diabolical
bug fixes are appropriate. Therefore, please generate these
against net-next-2.6, thanks.