Some devices, such as virtio-net, do not directly use dma addr. These
devices do not initialize dma after completing the xsk setup, so the dma
check is skipped here.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Reviewed-by: Dust Li <dust.li@xxxxxxxxxxxxxxxxx>
Acked-by: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
---
net/xdp/xsk_buff_pool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index 8de01aaac4a0..a7e434de0308 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -171,7 +171,7 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
if (err)
goto err_unreg_pool;
- if (!pool->dma_pages) {
+ if (!(netdev->priv_flags & IFF_NOT_USE_DMA_ADDR) && !pool->dma_pages) {
WARN(1, "Driver did not DMA map zero-copy buffers");
err = -EINVAL;
goto err_unreg_xsk;
--
2.31.0
