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IB/ipoib: Add readout of statistics using ethtool

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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 <hans.westgaard.ry@oracle.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Tested-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Hans Westgaard Ry 2016-04-21 13:13:21 +02:00 committed by Doug Ledford
parent 01690e9c70
commit e3614bc9dc
1 changed files with 67 additions and 0 deletions
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67
drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
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@ -36,6 +36,27 @@
#include "ipoib.h" #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, static void ipoib_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo) struct ethtool_drvinfo *drvinfo)
{ {
@ -92,11 +113,57 @@ static int ipoib_set_coalesce(struct net_device *dev,
return 0; 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 = { static const struct ethtool_ops ipoib_ethtool_ops = {
.get_drvinfo = ipoib_get_drvinfo, .get_drvinfo = ipoib_get_drvinfo,
.get_coalesce = ipoib_get_coalesce, .get_coalesce = ipoib_get_coalesce,
.set_coalesce = ipoib_set_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) void ipoib_set_ethtool_ops(struct net_device *dev)