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authorPavel Begunkov <asml.silence@gmail.com>2022-10-21 11:16:41 +0100
committerJens Axboe <axboe@kernel.dk>2022-10-22 08:43:03 -0600
commitcc767e7c6913f770741d9fad1efa4957c2623744 (patch)
treebc25e7e05dfb6da9bdb09a9b1b3481eb9de59b57 /io_uring
parentedf81438799ccead7122948446d7e44b083e788d (diff)
io_uring/net: fail zc sendmsg when unsupported by socket
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> Link: https://lore.kernel.org/r/0854e7bb4c3d810a48ec8b5853e2f61af36a0467.1666346426.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
-rw-r--r--io_uring/net.c2
1 files changed, 2 insertions, 0 deletions
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;