Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752137AbcDULNv (ORCPT ); Thu, 21 Apr 2016 07:13:51 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:30884 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751240AbcDULNt (ORCPT ); Thu, 21 Apr 2016 07:13:49 -0400 From: Hans Westgaard Ry Cc: Hans Westgaard Ry , Doug Ledford , Sean Hefty , Hal Rosenstock , Or Gerlitz , Santosh Shilimkar , Yuval Shaia , linux-rdma@vger.kernel.org (open list:INFINIBAND SUBSYSTEM), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3] IB/ipoib: Add readout of statistics using ethtool Date: Thu, 21 Apr 2016 13:13:21 +0200 Message-Id: <1461237201-25738-1-git-send-email-hans.westgaard.ry@oracle.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1460715468-16235-1-git-send-email-hans.westgaard.ry@oracle.com> References: <1460715468-16235-1-git-send-email-hans.westgaard.ry@oracle.com> X-Source-IP: aserv0021.oracle.com [141.146.126.233] To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2919 Lines: 104 IPoIB collects statistics of traffic including number of packets sent/received, number of bytes transferred, and certain errors. This patch makes these statistics available to be queried by ethtool. Signed-off-by: Hans Westgaard Ry Reviewed-by: Yuval Shaia Reviewed-by: Santosh Shilimkar Tested-by: Yuval Shaia --- drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 67 ++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c index a53fa5f..1502199 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c @@ -36,6 +36,27 @@ #include "ipoib.h" +struct ipoib_stats { + char stat_string[ETH_GSTRING_LEN]; + int stat_offset; +}; + +#define IPOIB_NETDEV_STAT(m) { \ + .stat_string = #m, \ + .stat_offset = offsetof(struct rtnl_link_stats64, m) } + +static const struct ipoib_stats ipoib_gstrings_stats[] = { + IPOIB_NETDEV_STAT(rx_packets), + IPOIB_NETDEV_STAT(tx_packets), + IPOIB_NETDEV_STAT(rx_bytes), + IPOIB_NETDEV_STAT(tx_bytes), + IPOIB_NETDEV_STAT(tx_errors), + IPOIB_NETDEV_STAT(rx_dropped), + IPOIB_NETDEV_STAT(tx_dropped) +}; + +#define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats) + static void ipoib_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) { @@ -92,11 +113,57 @@ static int ipoib_set_coalesce(struct net_device *dev, return 0; } +static void ipoib_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats __always_unused *stats, + u64 *data) +{ + int i; + struct net_device_stats *net_stats = &dev->stats; + u8 *p = (u8 *)net_stats; + + for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) + data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset); + +} +static void ipoib_get_strings(struct net_device __always_unused *dev, + u32 stringset, u8 *data) +{ + u8 *p = data; + int i; + + switch (stringset) { + case ETH_SS_STATS: + for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) { + memcpy(p, ipoib_gstrings_stats[i].stat_string, + ETH_GSTRING_LEN); + p += ETH_GSTRING_LEN; + } + break; + case ETH_SS_TEST: + default: + break; + } +} +static int ipoib_get_sset_count(struct net_device __always_unused *dev, + int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return IPOIB_GLOBAL_STATS_LEN; + case ETH_SS_TEST: + default: + break; + } + return -EOPNOTSUPP; +} static const struct ethtool_ops ipoib_ethtool_ops = { .get_drvinfo = ipoib_get_drvinfo, .get_coalesce = ipoib_get_coalesce, .set_coalesce = ipoib_set_coalesce, + .get_strings = ipoib_get_strings, + .get_ethtool_stats = ipoib_get_ethtool_stats, + .get_sset_count = ipoib_get_sset_count, }; void ipoib_set_ethtool_ops(struct net_device *dev) -- 2.4.3