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@xxxxxxxxxx>
Reviewed-by: Yuval Shaia <yuval.shaia@xxxxxxxxxx>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>
Tested-by: Yuval Shaia <yuval.shaia@xxxxxxxxxx>
---
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
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