[v1] io_uring/zcrx: fix ifq->if_rxq is -1, get dma_dev is NULL

[PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get dma_dev is NULL

Feng zhou posted 1 patch 2 weeks, 6 days ago

Diff against v1
Download mbox

io_uring/zcrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Expand all Fold all

[PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get dma_dev is NULL

Posted by Feng zhou 2 weeks, 6 days ago

From: Feng Zhou <zhoufeng.zf@bytedance.com>

ifq->if_rxq has not been assigned, is -1, the correct value is
in reg.if_rxq.

Fixes: 59b8b32ac8d469958936fcea781c7f58e3d64742 ("io_uring/zcrx: add support for custom DMA devices")
Signed-off-by: Feng Zhou <zhoufeng.zf@bytedance.com>
---
 io_uring/zcrx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index 319eddfd30e0..3639283c87ca 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -600,7 +600,7 @@ int io_register_zcrx_ifq(struct io_ring_ctx *ctx,
 		goto err;
 	}
 
-	ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, ifq->if_rxq);
+	ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, reg.if_rxq);
 	if (!ifq->dev) {
 		ret = -EOPNOTSUPP;
 		goto err;
-- 
2.30.2

Re: [PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get dma_dev is NULL

Posted by Jens Axboe 2 weeks, 2 days ago

On 9/12/25 8:01 AM, Feng zhou wrote:
> From: Feng Zhou <zhoufeng.zf@bytedance.com>
> 
> ifq->if_rxq has not been assigned, is -1, the correct value is
> in reg.if_rxq.

Reviewed-by: Jens Axboe <axboe@kernel.dk>

-- 
Jens Axboe