diff mbox series

[3/5] net: Split a __sys_listen helper for io_uring

Message ID 20240531211211.12628-4-krisman@suse.de (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series io_uring: support IORING_OP_BIND and IORING_OP_LISTEN | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 6305 this patch: 6305
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 4 maintainers not CCed: dhowells@redhat.com pabeni@redhat.com kuba@kernel.org edumazet@google.com
netdev/build_clang success Errors and warnings before: 2077 this patch: 2077
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 16241 this patch: 16241
netdev/checkpatch warning CHECK: extern prototypes should be avoided in .h files
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 24 this patch: 24
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-06-01--15-00 (tests: 1040)

Commit Message

Gabriel Krisman Bertazi May 31, 2024, 9:12 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.

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

Jens Axboe May 31, 2024, 10:38 p.m. UTC | #1 
On 5/31/24 3:12 PM, 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>
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;