net/core: Add drop counters to VF statistics
Modern hardware can decide to drop packets going to/from a VF.
Add receive and transmit drop counters to be displayed at hypervisor
layer in iproute2 per VF statistics.
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 4c54611..622658d 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -13,6 +13,8 @@ struct ifla_vf_stats {
__u64 tx_bytes;
__u64 broadcast;
__u64 multicast;
+ __u64 rx_dropped;
+ __u64 tx_dropped;
};
struct ifla_vf_info {
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 19fc026..f8f04fe 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -732,6 +732,8 @@ enum {
IFLA_VF_STATS_BROADCAST,
IFLA_VF_STATS_MULTICAST,
IFLA_VF_STATS_PAD,
+ IFLA_VF_STATS_RX_DROPPED,
+ IFLA_VF_STATS_TX_DROPPED,
__IFLA_VF_STATS_MAX,
};
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index c688dc5..5421a3f 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -904,6 +904,10 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev,
nla_total_size_64bit(sizeof(__u64)) +
/* IFLA_VF_STATS_MULTICAST */
nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_RX_DROPPED */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_TX_DROPPED */
+ nla_total_size_64bit(sizeof(__u64)) +
nla_total_size(sizeof(struct ifla_vf_trust)));
return size;
} else
@@ -1258,7 +1262,11 @@ static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb,
nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST,
vf_stats.broadcast, IFLA_VF_STATS_PAD) ||
nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST,
- vf_stats.multicast, IFLA_VF_STATS_PAD)) {
+ vf_stats.multicast, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_DROPPED,
+ vf_stats.rx_dropped, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_DROPPED,
+ vf_stats.tx_dropped, IFLA_VF_STATS_PAD)) {
nla_nest_cancel(skb, vfstats);
goto nla_put_vf_failure;
}