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io_uring/net: avoid import_ubuf for regvec send 

With registered buffers we set up iterators in helpers like
io_import_fixed(), and there is no need for a import_ubuf() before that.
It was fine as we used real pointers for offset calculation, but that's
not the case anymore since introduction of ublk kernel buffers.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9b2de1a50844f848f62c8de609b494971033a6b9.1743437358.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
pull/1194/head
Pavel Begunkov 2025-03-31 17:17:58 +01:00 committed by Jens Axboe
parent a1fbe0a121
commit 81ed18015d
1 changed files with 2 additions and 0 deletions
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2
io_uring/net.c
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@ -359,6 +359,8 @@ static int io_send_setup(struct io_kiocb *req, const struct io_uring_sqe *sqe)
kmsg->msg.msg_name = &kmsg->addr;
kmsg->msg.msg_namelen = addr_len;
}
if (sr->flags & IORING_RECVSEND_FIXED_BUF)
return 0;
if (!io_do_buffer_select(req)) {
ret = import_ubuf(ITER_SOURCE, sr->buf, sr->len,
&kmsg->msg.msg_iter);