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>
This commit is contained in:
Eric Dumazet 2015-10-02 11:43:28 -07:00 committed by David S. Miller
parent b267cdd107
commit ba8e275a45
2 changed files with 12 additions and 14 deletions

View file

@ -622,8 +622,12 @@ clear_hash_noput:
return 1;
}
static bool tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
#endif
static bool tcp_v6_inbound_md5_hash(const struct sock *sk,
const struct sk_buff *skb)
{
#ifdef CONFIG_TCP_MD5SIG
const __u8 *hash_location = NULL;
struct tcp_md5sig_key *hash_expected;
const struct ipv6hdr *ip6h = ipv6_hdr(skb);
@ -660,9 +664,9 @@ static bool tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
&ip6h->daddr, ntohs(th->dest));
return true;
}
#endif
return false;
}
#endif
static void tcp_v6_init_req(struct request_sock *req,
const struct sock *sk_listener,
@ -1408,10 +1412,8 @@ process:
tcp_v6_fill_cb(skb, hdr, th);
#ifdef CONFIG_TCP_MD5SIG
if (tcp_v6_inbound_md5_hash(sk, skb))
goto discard_and_relse;
#endif
if (sk_filter(sk, skb))
goto discard_and_relse;