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This means we can drop any usage of io_sendrecv_prep_async() and io_sendmsg_prep_async(), and hence the forced async setup path is now unified with the normal prep setup. Signed-off-by: Jens Axboe --- io_uring/net.c | 169 +++++++++++++++-------------------------------- io_uring/net.h | 2 - io_uring/opdef.c | 4 -- 3 files changed, 54 insertions(+), 121 deletions(-) diff --git a/io_uring/net.c b/io_uring/net.c index 50758442188b..94767d6c1946 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -290,50 +290,64 @@ static int io_sendmsg_copy_hdr(struct io_kiocb *req, return ret; } -int io_sendrecv_prep_async(struct io_kiocb *req) +void io_sendmsg_recvmsg_cleanup(struct io_kiocb *req) +{ + struct io_async_msghdr *io = req->async_data; + + kfree(io->free_iov); +} + +static int io_send_setup(struct io_kiocb *req) { struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); - struct io_async_msghdr *io; + struct io_async_msghdr *kmsg = req->async_data; int ret; - if (req_has_async_data(req)) - return 0; - sr->done_io = 0; - if (!sr->addr) - return 0; - io = io_msg_alloc_async_prep(req); - if (!io) - return -ENOMEM; - memset(&io->msg, 0, sizeof(io->msg)); - ret = import_ubuf(ITER_SOURCE, sr->buf, sr->len, &io->msg.msg_iter); - if (unlikely(ret)) - return ret; - if (sr->addr) - return move_addr_to_kernel(sr->addr, sr->addr_len, &io->addr); + if (sr->addr) { + ret = move_addr_to_kernel(sr->addr, sr->addr_len, &kmsg->addr); + if (unlikely(ret < 0)) + return ret; + } + + if (!io_do_buffer_select(req)) { + ret = import_ubuf(ITER_SOURCE, sr->buf, sr->len, + &kmsg->msg.msg_iter); + if (unlikely(ret)) + return ret; + } + + if (sr->addr) { + kmsg->msg.msg_name = &kmsg->addr; + kmsg->msg.msg_namelen = sr->addr_len; + } else { + kmsg->msg.msg_name = NULL; + kmsg->msg.msg_namelen = 0; + } + kmsg->msg.msg_control = NULL; + kmsg->msg.msg_controllen = 0; + kmsg->msg.msg_ubuf = NULL; return 0; } -int io_sendmsg_prep_async(struct io_kiocb *req) +static int io_sendmsg_prep_setup(struct io_kiocb *req, int is_msg) { - struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); + struct io_async_msghdr *kmsg; int ret; - sr->done_io = 0; - if (!io_msg_alloc_async_prep(req)) + /* always locked for prep */ + kmsg = io_msg_alloc_async(req, 0); + if (unlikely(!kmsg)) return -ENOMEM; - ret = io_sendmsg_copy_hdr(req, req->async_data); + + if (!is_msg) + return io_send_setup(req); + + ret = io_sendmsg_copy_hdr(req, kmsg); if (!ret) req->flags |= REQ_F_NEED_CLEANUP; return ret; } -void io_sendmsg_recvmsg_cleanup(struct io_kiocb *req) -{ - struct io_async_msghdr *io = req->async_data; - - kfree(io->free_iov); -} - int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); @@ -362,7 +376,7 @@ int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) if (req->ctx->compat) sr->msg_flags |= MSG_CMSG_COMPAT; #endif - return 0; + return io_sendmsg_prep_setup(req, req->opcode == IORING_OP_SENDMSG); } static void io_req_msg_cleanup(struct io_kiocb *req, @@ -379,7 +393,7 @@ static void io_req_msg_cleanup(struct io_kiocb *req, int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags) { struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); - struct io_async_msghdr *kmsg; + struct io_async_msghdr *kmsg = req->async_data; struct socket *sock; unsigned flags; int min_ret = 0; @@ -389,18 +403,6 @@ int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags) if (unlikely(!sock)) return -ENOTSOCK; - if (req_has_async_data(req)) { - kmsg = req->async_data; - kmsg->msg.msg_control_user = sr->msg_control; - } else { - kmsg = io_msg_alloc_async(req, issue_flags); - if (unlikely(!kmsg)) - return -ENOMEM; - ret = io_sendmsg_copy_hdr(req, kmsg); - if (ret) - return ret; - } - if (!(req->flags & REQ_F_POLLED) && (sr->flags & IORING_RECVSEND_POLL_FIRST)) return -EAGAIN; @@ -436,58 +438,10 @@ int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags) return IOU_OK; } -static struct io_async_msghdr *io_send_setup(struct io_kiocb *req, - unsigned int issue_flags) -{ - struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); - struct io_async_msghdr *kmsg; - int ret; - - if (req_has_async_data(req)) { - kmsg = req->async_data; - } else { - kmsg = io_msg_alloc_async(req, issue_flags); - if (!kmsg) - return ERR_PTR(-ENOMEM); - - if (sr->addr) { - ret = move_addr_to_kernel(sr->addr, sr->addr_len, - &kmsg->addr); - if (unlikely(ret < 0)) - return ERR_PTR(ret); - } - - if (!io_do_buffer_select(req)) { - ret = import_ubuf(ITER_SOURCE, sr->buf, sr->len, - &kmsg->msg.msg_iter); - if (unlikely(ret)) - return ERR_PTR(ret); - } - } - - if (sr->addr) { - kmsg->msg.msg_name = &kmsg->addr; - kmsg->msg.msg_namelen = sr->addr_len; - } else { - kmsg->msg.msg_name = NULL; - kmsg->msg.msg_namelen = 0; - } - kmsg->msg.msg_control = NULL; - kmsg->msg.msg_controllen = 0; - kmsg->msg.msg_ubuf = NULL; - - if (!(req->flags & REQ_F_POLLED) && - (sr->flags & IORING_RECVSEND_POLL_FIRST)) - return ERR_PTR(-EAGAIN); - - return kmsg; -} - int io_send(struct io_kiocb *req, unsigned int issue_flags) { struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); - struct io_async_msghdr *kmsg; - size_t len = sr->len; + struct io_async_msghdr *kmsg = req->async_data; struct socket *sock; unsigned flags; int min_ret = 0; @@ -497,13 +451,9 @@ int io_send(struct io_kiocb *req, unsigned int issue_flags) if (unlikely(!sock)) return -ENOTSOCK; - kmsg = io_send_setup(req, issue_flags); - if (IS_ERR(kmsg)) - return PTR_ERR(kmsg); - - ret = import_ubuf(ITER_SOURCE, sr->buf, len, &kmsg->msg.msg_iter); - if (unlikely(ret)) - return ret; + if (!(req->flags & REQ_F_POLLED) && + (sr->flags & IORING_RECVSEND_POLL_FIRST)) + return -EAGAIN; flags = sr->msg_flags; if (issue_flags & IO_URING_F_NONBLOCK) @@ -1085,7 +1035,7 @@ int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) if (req->ctx->compat) zc->msg_flags |= MSG_CMSG_COMPAT; #endif - return 0; + return io_sendmsg_prep_setup(req, req->opcode == IORING_OP_SENDMSG_ZC); } static int io_sg_from_iter_iovec(struct sock *sk, struct sk_buff *skb, @@ -1174,7 +1124,7 @@ static int io_send_zc_import(struct io_kiocb *req, struct io_async_msghdr *kmsg) int io_send_zc(struct io_kiocb *req, unsigned int issue_flags) { struct io_sr_msg *zc = io_kiocb_to_cmd(req, struct io_sr_msg); - struct io_async_msghdr *kmsg; + struct io_async_msghdr *kmsg = req->async_data; struct socket *sock; unsigned msg_flags; int ret, min_ret = 0; @@ -1185,9 +1135,9 @@ int io_send_zc(struct io_kiocb *req, unsigned int issue_flags) if (!test_bit(SOCK_SUPPORT_ZC, &sock->flags)) return -EOPNOTSUPP; - kmsg = io_send_setup(req, issue_flags); - if (IS_ERR(kmsg)) - return PTR_ERR(kmsg); + if (!(req->flags & REQ_F_POLLED) && + (zc->flags & IORING_RECVSEND_POLL_FIRST)) + return -EAGAIN; if (!zc->done_io) { ret = io_send_zc_import(req, kmsg); @@ -1241,7 +1191,7 @@ int io_send_zc(struct io_kiocb *req, unsigned int issue_flags) int io_sendmsg_zc(struct io_kiocb *req, unsigned int issue_flags) { struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); - struct io_async_msghdr *kmsg; + struct io_async_msghdr *kmsg = req->async_data; struct socket *sock; unsigned flags; int ret, min_ret = 0; @@ -1254,17 +1204,6 @@ int io_sendmsg_zc(struct io_kiocb *req, unsigned int issue_flags) if (!test_bit(SOCK_SUPPORT_ZC, &sock->flags)) return -EOPNOTSUPP; - if (req_has_async_data(req)) { - kmsg = req->async_data; - } else { - kmsg = io_msg_alloc_async(req, issue_flags); - if (unlikely(!kmsg)) - return -ENOMEM; - ret = io_sendmsg_copy_hdr(req, kmsg); - if (ret) - return ret; - } - if (!(req->flags & REQ_F_POLLED) && (sr->flags & IORING_RECVSEND_POLL_FIRST)) return -EAGAIN; diff --git a/io_uring/net.h b/io_uring/net.h index 654324739346..2713dc90fdd4 100644 --- a/io_uring/net.h +++ b/io_uring/net.h @@ -33,13 +33,11 @@ struct io_async_connect { 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); -int io_sendmsg_prep_async(struct io_kiocb *req); void io_sendmsg_recvmsg_cleanup(struct io_kiocb *req); int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags); int io_send(struct io_kiocb *req, unsigned int issue_flags); -int io_sendrecv_prep_async(struct io_kiocb *req); int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); int io_recvmsg(struct io_kiocb *req, unsigned int issue_flags); diff --git a/io_uring/opdef.c b/io_uring/opdef.c index 1368193edc57..dd4a1e1425e1 100644 --- a/io_uring/opdef.c +++ b/io_uring/opdef.c @@ -527,7 +527,6 @@ const struct io_cold_def io_cold_defs[] = { .name = "SENDMSG", #if defined(CONFIG_NET) .async_size = sizeof(struct io_async_msghdr), - .prep_async = io_sendmsg_prep_async, .cleanup = io_sendmsg_recvmsg_cleanup, .fail = io_sendrecv_fail, #endif @@ -603,7 +602,6 @@ const struct io_cold_def io_cold_defs[] = { .async_size = sizeof(struct io_async_msghdr), .cleanup = io_sendmsg_recvmsg_cleanup, .fail = io_sendrecv_fail, - .prep_async = io_sendrecv_prep_async, #endif }, [IORING_OP_RECV] = { @@ -688,7 +686,6 @@ const struct io_cold_def io_cold_defs[] = { .name = "SEND_ZC", #if defined(CONFIG_NET) .async_size = sizeof(struct io_async_msghdr), - .prep_async = io_sendrecv_prep_async, .cleanup = io_send_zc_cleanup, .fail = io_sendrecv_fail, #endif @@ -697,7 +694,6 @@ const struct io_cold_def io_cold_defs[] = { .name = "SENDMSG_ZC", #if defined(CONFIG_NET) .async_size = sizeof(struct io_async_msghdr), - .prep_async = io_sendmsg_prep_async, .cleanup = io_send_zc_cleanup, .fail = io_sendrecv_fail, #endif