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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>
This commit is contained in:
Eugenia Emantayev 2017-07-17 13:47:07 +03:00 committed by Saeed Mahameed
parent 4312782479
commit c5a9f6f0ab
3 changed files with 13 additions and 1 deletions
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2
include/linux/if_link.h
View File

@ -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 {

2
include/uapi/linux/if_link.h
View File

@ -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,
};

10
net/core/rtnetlink.c
View File

@ -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;
}