Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
io_uring/net: add generic multishot retry helper
This is just moving io_recv_prep_retry() higher up so it can get used
for sends as well, and rename it to be generically useful for both
sends and receives.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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+12
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io_uring/net.c
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io_uring/net.c
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return 0;
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}
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+
static inline void io_mshot_prep_retry(struct io_kiocb *req,
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struct io_async_msghdr *kmsg)
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{
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struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
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+
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req->flags &= ~REQ_F_BL_EMPTY;
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sr->done_io = 0;
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sr->len = 0; /* get from the provided buffer */
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req->buf_index = sr->buf_group;
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}
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+
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#ifdef CONFIG_COMPAT
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static int io_compat_msg_copy_hdr(struct io_kiocb *req,
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struct io_async_msghdr *iomsg,
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return io_recvmsg_prep_setup(req);
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}
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-
static inline void io_recv_prep_retry(struct io_kiocb *req,
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struct io_async_msghdr *kmsg)
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{
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struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
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req->flags &= ~REQ_F_BL_EMPTY;
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sr->done_io = 0;
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sr->len = 0; /* get from the provided buffer */
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req->buf_index = sr->buf_group;
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}
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/*
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* Finishes io_recv and io_recvmsg.
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*
···
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struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
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int mshot_retry_ret = IOU_ISSUE_SKIP_COMPLETE;
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io_recv_prep_retry(req, kmsg);
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io_mshot_prep_retry(req, kmsg);
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/* Known not-empty or unknown state, retry */
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if (cflags & IORING_CQE_F_SOCK_NONEMPTY || kmsg->msg.msg_inq < 0) {
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if (sr->nr_multishot_loops++ < MULTISHOT_MAX_RETRY)