diff mbox series

[net-next,11/14] mptcp: avoid ssock usage in mptcp_pm_nl_create_listen_socket()

Message ID 20230811-upstream-net-next-20230811-mptcp-get-rid-of-msk-subflow-v1-11-36183269ade8@tessares.net
State New
Headers
Series mptcp: get rid of msk->subflow |

Commit Message

Matthieu Baerts Aug. 11, 2023, 3:57 p.m. UTC 
  From: Paolo Abeni <pabeni@redhat.com>

This is one of the few remaining spots actually manipulating the
first subflow socket. We can leverage the recently introduced
inet helpers to get rid of ssock there.

No functional changes intended.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 net/mptcp/pm_netlink.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 5692daf57a4d..ae36155ff128 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -9,6 +9,7 @@ 
 #include <linux/inet.h>
 #include <linux/kernel.h>
 #include <net/tcp.h>
+#include <net/inet_common.h>
 #include <net/netns/generic.h>
 #include <net/mptcp.h>
 #include <net/genetlink.h>
@@ -1005,8 +1006,8 @@  static int mptcp_pm_nl_create_listen_socket(struct sock *sk,
 	bool is_ipv6 = sk->sk_family == AF_INET6;
 	int addrlen = sizeof(struct sockaddr_in);
 	struct sockaddr_storage addr;
+	struct sock *newsk, *ssk;
 	struct socket *ssock;
-	struct sock *newsk;
 	int backlog = 1024;
 	int err;
 
@@ -1042,18 +1043,23 @@  static int mptcp_pm_nl_create_listen_socket(struct sock *sk,
 	if (entry->addr.family == AF_INET6)
 		addrlen = sizeof(struct sockaddr_in6);
 #endif
-	err = kernel_bind(ssock, (struct sockaddr *)&addr, addrlen);
+	ssk = mptcp_sk(newsk)->first;
+	if (ssk->sk_family == AF_INET)
+		err = inet_bind_sk(ssk, (struct sockaddr *)&addr, addrlen);
+#if IS_ENABLED(CONFIG_MPTCP_IPV6)
+	else if (ssk->sk_family == AF_INET6)
+		err = inet6_bind_sk(ssk, (struct sockaddr *)&addr, addrlen);
+#endif
 	if (err)
 		return err;
 
 	inet_sk_state_store(newsk, TCP_LISTEN);
-	err = kernel_listen(ssock, backlog);
-	if (err)
-		return err;
-
-	mptcp_event_pm_listener(ssock->sk, MPTCP_EVENT_LISTENER_CREATED);
-
-	return 0;
+	lock_sock(ssk);
+	err = __inet_listen_sk(ssk, backlog);
+	if (!err)
+		mptcp_event_pm_listener(ssk, MPTCP_EVENT_LISTENER_CREATED);
+	release_sock(ssk);
+	return err;
 }
 
 int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc)