diff mbox series

[for-6.1,3/3] io_uring/net: fail zc sendmsg when unsupported by socket

Message ID 0854e7bb4c3d810a48ec8b5853e2f61af36a0467.1666346426.git.asml.silence@gmail.com (mailing list archive)
State Accepted
Commit cc767e7c6913f770741d9fad1efa4957c2623744
Headers show
Series fail io_uring zc with sockets not supporting it | expand

Checks

Context Check Description
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Pavel Begunkov Oct. 21, 2022, 10:16 a.m. UTC
The previous patch fails zerocopy send requests for protocols that don't
support it, do the same for zerocopy sendmsg.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/net.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/io_uring/net.c b/io_uring/net.c
index 26ff3675214d..15dea91625e2 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -1153,6 +1153,8 @@  int io_sendmsg_zc(struct io_kiocb *req, unsigned int issue_flags)
 	sock = sock_from_file(req->file);
 	if (unlikely(!sock))
 		return -ENOTSOCK;
+	if (!test_bit(SOCK_SUPPORT_ZC, &sock->flags))
+		return -EOPNOTSUPP;
 
 	if (req_has_async_data(req)) {
 		kmsg = req->async_data;