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authorChenbo Feng <fengc@google.com>2017-06-09 12:17:37 -0700
committerDavid S. Miller <davem@davemloft.net>2017-06-10 16:08:02 -0400
commit384abed1fe49cd3f473d61d3297a6fec5e420699 (patch)
treec00243e6e2a85aa433b7cb1fa8001a2d5bf4202a /net/ipv6/tcp_ipv6.c
parentcd99c3776351e1b90ac05ff527553f8a29c03583 (diff)
bpf: Remove duplicate tcp_filter hook in ipv6
There are two tcp_filter hooks in tcp_ipv6 ingress path currently. One is at tcp_v6_rcv and another is in tcp_v6_do_rcv. It seems the tcp_filter() call inside tcp_v6_do_rcv is redundent and some packet will be filtered twice in this situation. This will cause trouble when using eBPF filters to account traffic data. Signed-off-by: Chenbo Feng <fengc@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0840543fc245..84ad50218255 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1249,9 +1249,6 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
if (skb->protocol == htons(ETH_P_IP))
return tcp_v4_do_rcv(sk, skb);
- if (tcp_filter(sk, skb))
- goto discard;
-
/*
* socket locking is here for SMP purposes as backlog rcv
* is currently called with bh processing disabled.