diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2023-11-28 18:29:20 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-11-29 20:16:19 -0800 |
| commit | 7577bc8249c3fc86096ef1b1c9a8f4b6232231e7 (patch) | |
| tree | b9fa0eb5cf41c8cc8a616352c1493294e96c79fb /include/net/tcp.h | |
| parent | 50468cddd6bc27e75e7377e376674d40fd1b1d73 (diff) | |
| download | linux-7577bc8249c3fc86096ef1b1c9a8f4b6232231e7.tar.gz | |
tcp: Don't pass cookie to __cookie_v[46]_check().
tcp_hdr(skb) and SYN Cookie are passed to __cookie_v[46]_check(), but
none of the callers passes cookie other than ntohl(th->ack_seq) - 1.
Let's fetch it in __cookie_v[46]_check() instead of passing the cookie
over and over.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20231129022924.96156-5-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index d2f0736b76b8b..2b2c79c7bbcd5 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -491,8 +491,7 @@ void inet_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb); struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb, struct request_sock *req, struct dst_entry *dst, u32 tsoff); -int __cookie_v4_check(const struct iphdr *iph, const struct tcphdr *th, - u32 cookie); +int __cookie_v4_check(const struct iphdr *iph, const struct tcphdr *th); struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb); struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops, const struct tcp_request_sock_ops *af_ops, @@ -586,8 +585,7 @@ bool cookie_ecn_ok(const struct tcp_options_received *opt, const struct net *net, const struct dst_entry *dst); /* From net/ipv6/syncookies.c */ -int __cookie_v6_check(const struct ipv6hdr *iph, const struct tcphdr *th, - u32 cookie); +int __cookie_v6_check(const struct ipv6hdr *iph, const struct tcphdr *th); struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb); u32 __cookie_v6_init_sequence(const struct ipv6hdr *iph, |