diff options
| -rw-r--r-- | include/linux/tcp.h | 2 | ||||
| -rw-r--r-- | net/ipv4/syncookies.c | 4 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 3 | ||||
| -rw-r--r-- | net/ipv6/syncookies.c | 3 | ||||
| -rw-r--r-- | net/mptcp/subflow.c | 5 |
5 files changed, 14 insertions, 3 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 1cf73e6f85ca..3dc964010fef 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -148,9 +148,7 @@ struct tcp_request_sock { const struct tcp_request_sock_ops *af_specific; u64 snt_synack; /* first SYNACK sent time */ bool tfo_listener; -#if IS_ENABLED(CONFIG_MPTCP) bool is_mptcp; -#endif u32 txhash; u32 rcv_isn; u32 snt_isn; diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 345b2b0ff618..9a4f6b16c9bc 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -349,6 +349,10 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb) req->ts_recent = tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0; treq->snt_synack = 0; treq->tfo_listener = false; + + if (IS_ENABLED(CONFIG_MPTCP)) + treq->is_mptcp = 0; + if (IS_ENABLED(CONFIG_SMC)) ireq->smc_ok = 0; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index e8b840a4767e..e325b4506e25 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -6637,6 +6637,9 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops, af_ops->init_req(req, sk, skb); + if (IS_ENABLED(CONFIG_MPTCP) && want_cookie) + tcp_rsk(req)->is_mptcp = 0; + if (security_inet_conn_request(sk, skb, req)) goto drop_and_free; diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index 30915f6f31e3..13235a012388 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c @@ -178,6 +178,9 @@ 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; diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 205dca1c30b7..c90c0e6ffb82 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -186,6 +186,9 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk, pr_debug("listener=%p, req=%p, conn=%p", listener, req, listener->conn); + if (tcp_rsk(req)->is_mptcp == 0) + goto create_child; + /* if the sk is MP_CAPABLE, we try to fetch the client key */ subflow_req = mptcp_subflow_rsk(req); if (subflow_req->mp_capable) { @@ -769,7 +772,7 @@ static void subflow_ulp_clone(const struct request_sock *req, struct mptcp_subflow_context *old_ctx = mptcp_subflow_ctx(newsk); struct mptcp_subflow_context *new_ctx; - if (!subflow_req->mp_capable) { + if (!tcp_rsk(req)->is_mptcp || !subflow_req->mp_capable) { subflow_ulp_fallback(newsk, old_ctx); return; } |