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sock_diag: add SK_MEMINFO_DROPS

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Reporting sk_drops to user space was available for UDP
sockets using /proc interface.

Add this to sock_diag, so that we can have the same information
available to ss users, and we'll be able to add sk_drops
indications for TCP sockets as well.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2016-04-01 08:52:18 -07:00 committed by David S. Miller
parent 3b24d854cb
commit 15239302ed
2 changed files with 2 additions and 0 deletions
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1
include/uapi/linux/sock_diag.h
View File

@ -20,6 +20,7 @@ enum {
SK_MEMINFO_WMEM_QUEUED,
SK_MEMINFO_OPTMEM,
SK_MEMINFO_BACKLOG,
SK_MEMINFO_DROPS,
SK_MEMINFO_VARS,
};

1
net/core/sock_diag.c
View File

@ -67,6 +67,7 @@ int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attrtype)
mem[SK_MEMINFO_WMEM_QUEUED] = sk->sk_wmem_queued;
mem[SK_MEMINFO_OPTMEM] = atomic_read(&sk->sk_omem_alloc);
mem[SK_MEMINFO_BACKLOG] = sk->sk_backlog.len;
mem[SK_MEMINFO_DROPS] = atomic_read(&sk->sk_drops);
return nla_put(skb, attrtype, sizeof(mem), &mem);
}