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authorFlorian Westphal <fw@strlen.de>2020-07-30 22:25:55 +0300
committerDavid S. Miller <davem@davemloft.net>2020-08-01 02:55:32 +0300
commit6fc8c827dd4fa615965c4eac9bbfd465f6eb8fb4 (patch)
treef80652d4e2f503448acd4b507f4372b83b1312ea /net/ipv6
parentc83a47e50d8fd3825a4758158e9edd5acdc74185 (diff)
downloadlinux-6fc8c827dd4fa615965c4eac9bbfd465f6eb8fb4.tar.xz
tcp: syncookies: create mptcp request socket for ACK cookies with MPTCP option
If SYN packet contains MP_CAPABLE option, keep it enabled. Syncokie validation and cookie-based socket creation is changed to instantiate an mptcp request sockets if the ACK contains an MPTCP connection request. Rather than extend both cookie_v4/6_check, add a common helper to create the (mp)tcp request socket. Suggested-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/syncookies.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index 13235a012388..e796a64be308 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -170,7 +170,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
goto out;
ret = NULL;
- req = inet_reqsk_alloc(&tcp6_request_sock_ops, sk, false);
+ req = cookie_tcp_reqsk_alloc(&tcp6_request_sock_ops, sk, skb);
if (!req)
goto out;
@@ -178,9 +178,6 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
treq = tcp_rsk(req);
treq->tfo_listener = false;
- if (IS_ENABLED(CONFIG_MPTCP))
- treq->is_mptcp = 0;
-
if (security_inet_conn_request(sk, skb, req))
goto out_free;