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| author |   Jens Axboe <axboe@kernel.dk> | 2019-04-19 13:34:07 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-09 14:32:05 -0600 |
| commit | 0fa03c624d8fc9932d0f27c39a9deca6a37e0e17 (patch) | |
| tree | 50924290ab944d1a68dcacb69c04d100c6d3049b /net/socket.c | |
| parent | io_uring: add support for sqe links (diff) | |
| download | linux-dev-0fa03c624d8fc9932d0f27c39a9deca6a37e0e17.tar.xz linux-dev-0fa03c624d8fc9932d0f27c39a9deca6a37e0e17.zip | |
io_uring: add support for sendmsg()
This is done through IORING_OP_SENDMSG. There's a new sqe->msg_flags
for the flags argument, and the msghdr struct is passed in the
sqe->addr field.
We use MSG_DONTWAIT to force an inline fast path if sendmsg() doesn't
block, and punt to async execution if it would have.
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c index bffec466b4f1..b9536940255e 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2313,6 +2313,13 @@ out_freeiov: /* * BSD sendmsg interface */ +long __sys_sendmsg_sock(struct socket *sock, struct user_msghdr __user *msg, + unsigned int flags) +{ + struct msghdr msg_sys; + + return ___sys_sendmsg(sock, msg, &msg_sys, flags, NULL, 0); +} long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat) |