diff mbox series

[v2,2/4] net: Split a __sys_listen helper for io_uring

Message ID 20240614163047.31581-2-krisman@suse.de (mailing list archive)
State New
Headers show
Series [v2,1/4] net: Split a __sys_bind helper for io_uring | expand

Commit Message

Gabriel Krisman Bertazi June 14, 2024, 4:30 p.m. UTC 
io_uring holds a reference to the file and maintains a sockaddr_storage
address.  Similarly to what was done to __sys_connect_file, split an
internal helper for __sys_listen in preparation to support an
io_uring listen command.

Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
 include/linux/socket.h |  1 +
 net/socket.c           | 23 ++++++++++++++---------
 2 files changed, 15 insertions(+), 9 deletions(-)

Comments

Kuniyuki Iwashima June 14, 2024, 10:44 p.m. UTC | #1 
From: Gabriel Krisman Bertazi <krisman@suse.de>
Date: Fri, 14 Jun 2024 12:30:45 -0400
> io_uring holds a reference to the file and maintains a sockaddr_storage
> address.  Similarly to what was done to __sys_connect_file, split an
> internal helper for __sys_listen in preparation to support an
> io_uring listen command.
> 
> Reviewed-by: Jens Axboe <axboe@kernel.dk>
> Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>

Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Jakub Kicinski June 19, 2024, 12:50 a.m. UTC | #2 
On Fri, 14 Jun 2024 12:30:45 -0400 Gabriel Krisman Bertazi wrote:
> io_uring holds a reference to the file and maintains a sockaddr_storage
> address.  Similarly to what was done to __sys_connect_file, split an
> internal helper for __sys_listen in preparation to support an
> io_uring listen command.
> 
> Reviewed-by: Jens Axboe <axboe@kernel.dk>
> Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>

Acked-by: Jakub Kicinski <kuba@kernel.org>
diff mbox series

Patch

diff --git a/include/linux/socket.h b/include/linux/socket.h
index b3000f49e9f5..c1f16cdab677 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -449,6 +449,7 @@  extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
 extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
 			 int addrlen);
 extern int __sys_listen(int fd, int backlog);
+extern int __sys_listen_socket(struct socket *sock, int backlog);
 extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr,
 			     int __user *usockaddr_len);
 extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr,
diff --git a/net/socket.c b/net/socket.c
index fd0714e10ced..fcbdd5bc47ac 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1870,23 +1870,28 @@  SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
  *	necessary for a listen, and if that works, we mark the socket as
  *	ready for listening.
  */
+int __sys_listen_socket(struct socket *sock, int backlog)
+{
+	int somaxconn, err;
+
+	somaxconn = READ_ONCE(sock_net(sock->sk)->core.sysctl_somaxconn);
+	if ((unsigned int)backlog > somaxconn)
+		backlog = somaxconn;
+
+	err = security_socket_listen(sock, backlog);
+	if (!err)
+		err = READ_ONCE(sock->ops)->listen(sock, backlog);
+	return err;
+}
 
 int __sys_listen(int fd, int backlog)
 {
 	struct socket *sock;
 	int err, fput_needed;
-	int somaxconn;
 
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (sock) {
-		somaxconn = READ_ONCE(sock_net(sock->sk)->core.sysctl_somaxconn);
-		if ((unsigned int)backlog > somaxconn)
-			backlog = somaxconn;
-
-		err = security_socket_listen(sock, backlog);
-		if (!err)
-			err = READ_ONCE(sock->ops)->listen(sock, backlog);
-
+		err = __sys_listen_socket(sock, backlog);
 		fput_light(sock->file, fput_needed);
 	}
 	return err;