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Commit e3614bc9 authored by Hans Westgaard Ry's avatar Hans Westgaard Ry Committed by Doug Ledford
Browse files

IB/ipoib: Add readout of statistics using ethtool 



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: default avatarHans Westgaard Ry <hans.westgaard.ry@oracle.com>
Reviewed-by: default avatarYuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
Tested-by: default avatarYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 01690e9c

drivers/infiniband/ulp/ipoib/ipoib_ethtool.c

+67 −0
Original line number Diff line number Diff line
@@ -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)