From: Pavel Begunkov Date: Fri, 21 Oct 2022 10:16:41 +0000 (+0100) Subject: io_uring/net: fail zc sendmsg when unsupported by socket X-Git-Tag: v6.1-rc5~9^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cc767e7c6913f770741d9fad1efa4957c2623744;p=platform%2Fkernel%2Flinux-starfive.git 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 Link: https://lore.kernel.org/r/0854e7bb4c3d810a48ec8b5853e2f61af36a0467.1666346426.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- diff --git a/io_uring/net.c b/io_uring/net.c index 26ff367..15dea91 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;