diff options
Diffstat (limited to 'io_uring/net.c')
-rw-r--r-- | io_uring/net.c | 49 |
1 files changed, 28 insertions, 21 deletions
diff --git a/io_uring/net.c b/io_uring/net.c index 89e839013837..0795f3783013 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -616,9 +616,15 @@ static inline void io_recv_prep_retry(struct io_kiocb *req) * again (for multishot). */ static inline bool io_recv_finish(struct io_kiocb *req, int *ret, - unsigned int cflags, bool mshot_finished, + struct msghdr *msg, bool mshot_finished, unsigned issue_flags) { + unsigned int cflags; + + cflags = io_put_kbuf(req, issue_flags); + if (msg->msg_inq && msg->msg_inq != -1U) + cflags |= IORING_CQE_F_SOCK_NONEMPTY; + if (!(req->flags & REQ_F_APOLL_MULTISHOT)) { io_req_set_res(req, *ret, cflags); *ret = IOU_OK; @@ -629,7 +635,15 @@ static inline bool io_recv_finish(struct io_kiocb *req, int *ret, if (io_aux_cqe(req->ctx, issue_flags & IO_URING_F_COMPLETE_DEFER, req->cqe.user_data, *ret, cflags | IORING_CQE_F_MORE, true)) { io_recv_prep_retry(req); - return false; + /* Known not-empty or unknown state, retry */ + if (cflags & IORING_CQE_F_SOCK_NONEMPTY || + msg->msg_inq == -1U) + return false; + if (issue_flags & IO_URING_F_MULTISHOT) + *ret = IOU_ISSUE_SKIP_COMPLETE; + else + *ret = -EAGAIN; + return true; } /* Otherwise stop multishot but use the current result. */ } @@ -732,7 +746,6 @@ int io_recvmsg(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 iomsg, *kmsg; struct socket *sock; - unsigned int cflags; unsigned flags; int ret, min_ret = 0; bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK; @@ -785,6 +798,7 @@ retry_multishot: min_ret = iov_iter_count(&kmsg->msg.msg_iter); kmsg->msg.msg_get_inq = 1; + kmsg->msg.msg_inq = -1U; if (req->flags & REQ_F_APOLL_MULTISHOT) ret = io_recvmsg_multishot(sock, sr, kmsg, flags, &mshot_finished); @@ -820,11 +834,7 @@ retry_multishot: else io_kbuf_recycle(req, issue_flags); - cflags = io_put_kbuf(req, issue_flags); - if (kmsg->msg.msg_inq) - cflags |= IORING_CQE_F_SOCK_NONEMPTY; - - if (!io_recv_finish(req, &ret, cflags, mshot_finished, issue_flags)) + if (!io_recv_finish(req, &ret, &kmsg->msg, mshot_finished, issue_flags)) goto retry_multishot; if (mshot_finished) { @@ -843,7 +853,6 @@ int io_recv(struct io_kiocb *req, unsigned int issue_flags) struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); struct msghdr msg; struct socket *sock; - unsigned int cflags; unsigned flags; int ret, min_ret = 0; bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK; @@ -860,6 +869,14 @@ int io_recv(struct io_kiocb *req, unsigned int issue_flags) if (unlikely(!sock)) return -ENOTSOCK; + msg.msg_name = NULL; + msg.msg_namelen = 0; + msg.msg_control = NULL; + msg.msg_get_inq = 1; + msg.msg_controllen = 0; + msg.msg_iocb = NULL; + msg.msg_ubuf = NULL; + retry_multishot: if (io_do_buffer_select(req)) { void __user *buf; @@ -874,14 +891,8 @@ retry_multishot: if (unlikely(ret)) goto out_free; - msg.msg_name = NULL; - msg.msg_namelen = 0; - msg.msg_control = NULL; - msg.msg_get_inq = 1; + msg.msg_inq = -1U; msg.msg_flags = 0; - msg.msg_controllen = 0; - msg.msg_iocb = NULL; - msg.msg_ubuf = NULL; flags = sr->msg_flags; if (force_nonblock) @@ -921,11 +932,7 @@ out_free: else io_kbuf_recycle(req, issue_flags); - cflags = io_put_kbuf(req, issue_flags); - if (msg.msg_inq) - cflags |= IORING_CQE_F_SOCK_NONEMPTY; - - if (!io_recv_finish(req, &ret, cflags, ret <= 0, issue_flags)) + if (!io_recv_finish(req, &ret, &msg, ret <= 0, issue_flags)) goto retry_multishot; return ret; |