tcp: md5: remove request sock argument of calc_md5_hash()
Since request and established sockets now have same base,
there is no need to pass two pointers to tcp_v4_md5_hash_skb()
or tcp_v6_md5_hash_skb()
Also add a const qualifier to their struct tcp_md5sig_key argument.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 078e7d0..57d1c41 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -582,9 +582,9 @@
return 1;
}
-static int tcp_v6_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
+static int tcp_v6_md5_hash_skb(char *md5_hash,
+ const struct tcp_md5sig_key *key,
const struct sock *sk,
- const struct request_sock *req,
const struct sk_buff *skb)
{
const struct in6_addr *saddr, *daddr;
@@ -592,12 +592,9 @@
struct hash_desc *desc;
const struct tcphdr *th = tcp_hdr(skb);
- if (sk) {
- saddr = &inet6_sk(sk)->saddr;
+ if (sk) { /* valid for establish/request sockets */
+ saddr = &sk->sk_v6_rcv_saddr;
daddr = &sk->sk_v6_daddr;
- } else if (req) {
- saddr = &inet_rsk(req)->ir_v6_loc_addr;
- daddr = &inet_rsk(req)->ir_v6_rmt_addr;
} else {
const struct ipv6hdr *ip6h = ipv6_hdr(skb);
saddr = &ip6h->saddr;
@@ -662,7 +659,7 @@
/* check the signature */
genhash = tcp_v6_md5_hash_skb(newhash,
hash_expected,
- NULL, NULL, skb);
+ NULL, skb);
if (genhash || memcmp(hash_location, newhash, 16) != 0) {
net_info_ratelimited("MD5 Hash %s for [%pI6c]:%u->[%pI6c]:%u\n",
@@ -880,7 +877,7 @@
if (!key)
goto release_sk1;
- genhash = tcp_v6_md5_hash_skb(newhash, key, NULL, NULL, skb);
+ genhash = tcp_v6_md5_hash_skb(newhash, key, NULL, skb);
if (genhash || memcmp(hash_location, newhash, 16) != 0)
goto release_sk1;
} else {
