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io_uring/net: reuse req->buf_index for sendzc

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There is already a field in io_kiocb that can store a registered buffer
index, use that instead of stashing the value into struct io_sr_msg.

Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250224213116.3509093-4-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2025-02-24 13:31:08 -08:00
committed by Jens Axboe
parent a14ca7a413
commit 81cc96fcb3
1 changed files with 2 additions and 3 deletions
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5
io_uring/net.c
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@@ -75,7 +75,6 @@ struct io_sr_msg {
u16 flags;
/* initialised and used only by !msg send variants */
u16 buf_group;
u16 buf_index;
bool retry;
void __user *msg_control;
/* used only for send zerocopy */
@@ -1287,7 +1286,7 @@ int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
zc->len = READ_ONCE(sqe->len);
zc->msg_flags = READ_ONCE(sqe->msg_flags) | MSG_NOSIGNAL | MSG_ZEROCOPY;
zc->buf_index = READ_ONCE(sqe->buf_index);
req->buf_index = READ_ONCE(sqe->buf_index);
if (zc->msg_flags & MSG_DONTWAIT)
req->flags |= REQ_F_NOWAIT;
@@ -1363,7 +1362,7 @@ static int io_send_zc_import(struct io_kiocb *req, unsigned int issue_flags)
ret = -EFAULT;
io_ring_submit_lock(ctx, issue_flags);
node = io_rsrc_node_lookup(&ctx->buf_table, sr->buf_index);
node = io_rsrc_node_lookup(&ctx->buf_table, req->buf_index);
if (node) {
io_req_assign_buf_node(sr->notif, node);
ret = 0;