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| author | Jens Axboe <axboe@kernel.dk> | 2024-03-07 12:43:22 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-03-08 07:56:21 -0700 |
| commit | 9817ad85899fb695f875610fb743cb18cf087582 (patch) | |
| tree | 3df6fa502f1be6d4a8291c8fdd31c93164eb5709 /io_uring | |
| parent | deaef31bc1ec7966698a427da8c161930830e1cf (diff) | |
| download | linux-9817ad85899fb695f875610fb743cb18cf087582.tar.gz linux-9817ad85899fb695f875610fb743cb18cf087582.tar.bz2 linux-9817ad85899fb695f875610fb743cb18cf087582.zip | |
io_uring/net: remove dependency on REQ_F_PARTIAL_IO for sr->done_io
Ensure that prep handlers always initialize sr->done_io before any
potential failure conditions, and with that, we now it's always been
set even for the failure case.
With that, we don't need to use the REQ_F_PARTIAL_IO flag to gate on that.
Additionally, we should not overwrite req->cqe.res unless sr->done_io is
actually positive.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/net.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/io_uring/net.c b/io_uring/net.c index 52f0d3b735fd..b832c586be36 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -387,6 +387,8 @@ 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); + sr->done_io = 0; + if (req->opcode == IORING_OP_SEND) { if (READ_ONCE(sqe->__pad3[0])) return -EINVAL; @@ -409,7 +411,6 @@ 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 - sr->done_io = 0; return 0; } @@ -631,6 +632,8 @@ int io_recvmsg_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); + sr->done_io = 0; + if (unlikely(sqe->file_index || sqe->addr2)) return -EINVAL; @@ -667,7 +670,6 @@ int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) if (req->ctx->compat) sr->msg_flags |= MSG_CMSG_COMPAT; #endif - sr->done_io = 0; sr->nr_multishot_loops = 0; return 0; } @@ -1055,6 +1057,8 @@ int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) struct io_ring_ctx *ctx = req->ctx; struct io_kiocb *notif; + zc->done_io = 0; + if (unlikely(READ_ONCE(sqe->__pad2[0]) || READ_ONCE(sqe->addr3))) return -EINVAL; /* we don't support IOSQE_CQE_SKIP_SUCCESS just yet */ @@ -1107,8 +1111,6 @@ int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) if (zc->msg_flags & MSG_DONTWAIT) req->flags |= REQ_F_NOWAIT; - zc->done_io = 0; - #ifdef CONFIG_COMPAT if (req->ctx->compat) zc->msg_flags |= MSG_CMSG_COMPAT; @@ -1353,7 +1355,7 @@ void io_sendrecv_fail(struct io_kiocb *req) { struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg); - if (req->flags & REQ_F_PARTIAL_IO) + if (sr->done_io) req->cqe.res = sr->done_io; if ((req->flags & REQ_F_NEED_CLEANUP) && |