diff options
| author |   Eric Dumazet <edumazet@google.com> | 2016-04-01 08:52:19 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-04-04 22:11:20 -0400 |
| commit | 532182cd610782db8c18230c2747626562032205 (patch) | |
| tree | 6a2e21d238971e8eaccb22a872a1506a31f6f420 /include | |
| parent | sock_diag: add SK_MEMINFO_DROPS (diff) | |
| download | linux-dev-532182cd610782db8c18230c2747626562032205.tar.xz linux-dev-532182cd610782db8c18230c2747626562032205.zip | |
tcp: increment sk_drops for dropped rx packets
Now ss can report sk_drops, we can instruct TCP to increment
this per socket counter when it drops an incoming frame, to refine
monitoring and debugging.
Following patch takes care of listeners drops.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sock.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 7ad73db9dde2..310c4367ea83 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2012,6 +2012,13 @@ sock_skb_set_dropcount(const struct sock *sk, struct sk_buff *skb) SOCK_SKB_CB(skb)->dropcount = atomic_read(&sk->sk_drops); } +static inline void sk_drops_add(struct sock *sk, const struct sk_buff *skb) +{ + int segs = max_t(u16, 1, skb_shinfo(skb)->gso_segs); + + atomic_add(segs, &sk->sk_drops); +} + void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb); void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk, |