Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754759AbcDSOu0 (ORCPT ); Tue, 19 Apr 2016 10:50:26 -0400 Received: from mail-oi0-f68.google.com ([209.85.218.68]:36296 "EHLO mail-oi0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754605AbcDSOuY (ORCPT ); Tue, 19 Apr 2016 10:50:24 -0400 MIME-Version: 1.0 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> Date: Tue, 19 Apr 2016 17:50:23 +0300 Message-ID: Subject: Re: [PATCH] IB/ipoib: Add readout of statistics using ethtool From: Erez Shitrit To: Hans Westgaard Ry Cc: Doug Ledford , Sean Hefty , Hal Rosenstock , Or Gerlitz , Santosh Shilimkar , Yuval Shaia , "open list:INFINIBAND SUBSYSTEM" , open list Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4129 Lines: 117 On Fri, Apr 15, 2016 at 1:17 PM, Hans Westgaard Ry wrote: > 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 Acked-by: Erez Shitrit > --- > drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 70 ++++++++++++++++++++++++++++ > 1 file changed, 70 insertions(+) > > diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > index a53fa5f..52a1f30 100644 > --- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > +++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > @@ -36,6 +36,31 @@ > > #include "ipoib.h" > > +struct ipoib_stats { > + char stat_string[ETH_GSTRING_LEN]; > + int stat_offset; > +}; > + > + > +#define IPOIB_NETDEV_STAT(str, m) { \ > + .stat_string = str, \ > + .stat_offset = offsetof(struct rtnl_link_stats64, m) } > + > + > + > +static const struct ipoib_stats ipoib_gstrings_stats[] = { > + IPOIB_NETDEV_STAT("rx_packets", rx_packets), > + IPOIB_NETDEV_STAT("tx_packets", tx_packets), > + IPOIB_NETDEV_STAT("rx_bytes", rx_bytes), > + IPOIB_NETDEV_STAT("tx_bytes", tx_bytes), > + IPOIB_NETDEV_STAT("tx_errors", tx_errors), > + IPOIB_NETDEV_STAT("rx_dropped", rx_dropped), > + IPOIB_NETDEV_STAT("tx_dropped", 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 +117,56 @@ 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_TEST: > + break; > + 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; > + } > +} > +static int ipoib_get_sset_count(struct net_device __always_unused *dev, > + int sset) > +{ > + switch (sset) { > + case ETH_SS_TEST: > + return -EOPNOTSUPP; > + case ETH_SS_STATS: > + return IPOIB_GLOBAL_STATS_LEN; > + default: > + 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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html