diff options
| author |   Menglong Dong <imagedong@tencent.com> | 2022-02-20 15:06:30 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-02-20 13:55:31 +0000 |
| commit | 255f9034d3050fb1d0691226712c6b7f1ca674cd (patch) | |
| tree | 2359fdb2ad60cae149bc9f83e4e67e20b0d2007a /net/ipv4/tcp_ipv4.c | |
| parent | net: tcp: introduce tcp_drop_reason() (diff) | |
| download | linux-dev-255f9034d3050fb1d0691226712c6b7f1ca674cd.tar.xz linux-dev-255f9034d3050fb1d0691226712c6b7f1ca674cd.zip | |
net: tcp: add skb drop reasons to tcp_v4_rcv()
Use kfree_skb_reason() for some path in tcp_v4_rcv() that missed before,
including:
SKB_DROP_REASON_SOCKET_FILTER
SKB_DROP_REASON_XFRM_POLICY
Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 6873f46fc8ba..a3beab01e9a7 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2057,6 +2057,8 @@ process: iph = ip_hdr(skb); tcp_v4_fill_cb(skb, iph, th); nsk = tcp_check_req(sk, skb, req, false, &req_stolen); + } else { + drop_reason = SKB_DROP_REASON_SOCKET_FILTER; } if (!nsk) { reqsk_put(req); @@ -2092,8 +2094,10 @@ process: } } - if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) + if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { + drop_reason = SKB_DROP_REASON_XFRM_POLICY; goto discard_and_relse; + } if (tcp_v4_inbound_md5_hash(sk, skb, dif, sdif)) goto discard_and_relse; @@ -2166,6 +2170,7 @@ discard_and_relse: do_time_wait: if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { + drop_reason = SKB_DROP_REASON_XFRM_POLICY; inet_twsk_put(inet_twsk(sk)); goto discard_it; } |