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| author | Eric Dumazet <edumazet@google.com> | 2015-10-02 11:43:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-03 04:32:38 -0700 |
| commit | ba8e275a457397ab06f3567cf7bef0d78a43ae7e (patch) | |
| tree | b23c8ea809c70a80e3f1fa0ef9935e8600d739ff /net/ipv4 | |
| parent | b267cdd1075d28501b7c05c7aeb8466775505e8d (diff) | |
| download | linux-stable-ba8e275a457397ab06f3567cf7bef0d78a43ae7e.tar.gz linux-stable-ba8e275a457397ab06f3567cf7bef0d78a43ae7e.tar.bz2 linux-stable-ba8e275a457397ab06f3567cf7bef0d78a43ae7e.zip | |
tcp: cleanup tcp_v[46]_inbound_md5_hash()
We'll soon have to call tcp_v[46]_inbound_md5_hash() twice.
Also add const attribute to the socket, as it might be the
unlocked listener for SYN packets.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 2fb0945b9d83..56f8c6395966 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1112,10 +1112,13 @@ clear_hash_noput: } EXPORT_SYMBOL(tcp_v4_md5_hash_skb); +#endif + /* Called with rcu_read_lock() */ -static bool tcp_v4_inbound_md5_hash(struct sock *sk, +static bool tcp_v4_inbound_md5_hash(const struct sock *sk, const struct sk_buff *skb) { +#ifdef CONFIG_TCP_MD5SIG /* * This gets called for each TCP segment that arrives * so we want to be efficient. @@ -1165,8 +1168,9 @@ static bool tcp_v4_inbound_md5_hash(struct sock *sk, return true; } return false; -} #endif + return false; +} static void tcp_v4_init_req(struct request_sock *req, const struct sock *sk_listener, @@ -1607,16 +1611,8 @@ process: if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) goto discard_and_relse; -#ifdef CONFIG_TCP_MD5SIG - /* - * We really want to reject the packet as early as possible - * if: - * o We're expecting an MD5'd packet and this is no MD5 tcp option - * o There is an MD5 option and we're not expecting one - */ if (tcp_v4_inbound_md5_hash(sk, skb)) goto discard_and_relse; -#endif nf_reset(skb); |