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io_uring/net: move connect to always using async data

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While doing that, get rid of io_async_connect and just use the generic
io_async_msghdr. Both of them have a struct sockaddr_storage in there,
and while io_async_msghdr is bigger, if the same type can be used then
the netmsg_cache can get reused for connect as well.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2024-03-18 20:37:22 -06:00
parent d6f911a6b2
commit e2ea5a7069
3 changed files with 12 additions and 37 deletions
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41
io_uring/net.c
View File

@ -1428,17 +1428,10 @@ int io_socket(struct io_kiocb *req, unsigned int issue_flags)
return IOU_OK;
}
int io_connect_prep_async(struct io_kiocb *req)
{
struct io_async_connect *io = req->async_data;
struct io_connect *conn = io_kiocb_to_cmd(req, struct io_connect);
return move_addr_to_kernel(conn->addr, conn->addr_len, &io->address);
}
int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_connect *conn = io_kiocb_to_cmd(req, struct io_connect);
struct io_async_msghdr *io;
if (sqe->len || sqe->buf_index || sqe->rw_flags || sqe->splice_fd_in)
return -EINVAL;
@ -1446,32 +1439,26 @@ int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
conn->addr = u64_to_user_ptr(READ_ONCE(sqe->addr));
conn->addr_len = READ_ONCE(sqe->addr2);
conn->in_progress = conn->seen_econnaborted = false;
return 0;
io = io_msg_alloc_async(req);
if (unlikely(!io))
return -ENOMEM;
return move_addr_to_kernel(conn->addr, conn->addr_len, &io->addr);
}
int io_connect(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_connect *connect = io_kiocb_to_cmd(req, struct io_connect);
struct io_async_connect __io, *io;
struct io_async_msghdr *io = req->async_data;
unsigned file_flags;
int ret;
bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK;
if (req_has_async_data(req)) {
io = req->async_data;
} else {
ret = move_addr_to_kernel(connect->addr,
connect->addr_len,
&__io.address);
if (ret)
goto out;
io = &__io;
}
file_flags = force_nonblock ? O_NONBLOCK : 0;
ret = __sys_connect_file(req->file, &io->address,
connect->addr_len, file_flags);
ret = __sys_connect_file(req->file, &io->addr, connect->addr_len,
file_flags);
if ((ret == -EAGAIN || ret == -EINPROGRESS || ret == -ECONNABORTED)
&& force_nonblock) {
if (ret == -EINPROGRESS) {
@ -1481,13 +1468,6 @@ int io_connect(struct io_kiocb *req, unsigned int issue_flags)
goto out;
connect->seen_econnaborted = true;
}
if (req_has_async_data(req))
return -EAGAIN;
if (io_alloc_async_data(req)) {
ret = -ENOMEM;
goto out;
}
memcpy(req->async_data, &__io, sizeof(__io));
return -EAGAIN;
}
if (connect->in_progress) {
@ -1505,6 +1485,7 @@ int io_connect(struct io_kiocb *req, unsigned int issue_flags)
out:
if (ret < 0)
req_set_fail(req);
io_req_msg_cleanup(req, issue_flags);
io_req_set_res(req, ret, 0);
return IOU_OK;
}

5
io_uring/net.h
View File

@ -28,10 +28,6 @@ struct io_async_msghdr {
#if defined(CONFIG_NET)
struct io_async_connect {
struct sockaddr_storage address;
};
int io_shutdown_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_shutdown(struct io_kiocb *req, unsigned int issue_flags);
@ -53,7 +49,6 @@ int io_accept(struct io_kiocb *req, unsigned int issue_flags);
int io_socket_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_socket(struct io_kiocb *req, unsigned int issue_flags);
int io_connect_prep_async(struct io_kiocb *req);
int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_connect(struct io_kiocb *req, unsigned int issue_flags);

3
io_uring/opdef.c
View File

@ -557,8 +557,7 @@ const struct io_cold_def io_cold_defs[] = {
[IORING_OP_CONNECT] = {
.name = "CONNECT",
#if defined(CONFIG_NET)
.async_size = sizeof(struct io_async_connect),
.prep_async = io_connect_prep_async,
.async_size = sizeof(struct io_async_msghdr),
#endif
},
[IORING_OP_FALLOCATE] = {