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-rw-r--r--net/mptcp/subflow.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index d9c8b21c6076..9ee3b7abbaf6 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -819,6 +819,7 @@ create_child:
if (!ctx->conn)
goto fallback;
+ ctx->subflow_id = 1;
owner = mptcp_sk(ctx->conn);
mptcp_pm_new_connection(owner, child, 1);
@@ -1574,6 +1575,7 @@ int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,
subflow->remote_id = remote_id;
subflow->request_join = 1;
subflow->request_bkup = !!(flags & MPTCP_PM_ADDR_FLAG_BACKUP);
+ subflow->subflow_id = msk->subflow_id++;
mptcp_info2sockaddr(remote, &addr, ssk->sk_family);
sock_hold(ssk);
@@ -1668,6 +1670,10 @@ int mptcp_subflow_create_socket(struct sock *sk, unsigned short family,
lock_sock_nested(sf->sk, SINGLE_DEPTH_NESTING);
+ err = security_mptcp_add_subflow(sk, sf->sk);
+ if (err)
+ goto release_ssk;
+
/* the newly created socket has to be in the same cgroup as its parent */
mptcp_attach_cgroup(sk, sf->sk);
@@ -1680,6 +1686,8 @@ int mptcp_subflow_create_socket(struct sock *sk, unsigned short family,
get_net_track(net, &sf->sk->ns_tracker, GFP_KERNEL);
sock_inuse_add(net, 1);
err = tcp_set_ulp(sf->sk, "mptcp");
+
+release_ssk:
release_sock(sf->sk);
if (err) {