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authorFlorian Westphal <fw@strlen.de>2020-07-30 21:25:55 +0200
committerDavid S. Miller <davem@davemloft.net>2020-07-31 16:55:32 -0700
commit6fc8c827dd4fa615965c4eac9bbfd465f6eb8fb4 (patch)
treef80652d4e2f503448acd4b507f4372b83b1312ea /include/net/tcp.h
parentc83a47e50d8fd3825a4758158e9edd5acdc74185 (diff)
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 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e0c35d56091f..dbf5c791a6eb 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -469,6 +469,8 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb,
int __cookie_v4_check(const struct iphdr *iph, const struct tcphdr *th,
u32 cookie);
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,
+ struct sock *sk, struct sk_buff *skb);
#ifdef CONFIG_SYN_COOKIES
/* Syncookies use a monotonic timer which increments every 60 seconds.