[PATCH net-next v4 05/10] xsk: XDP_SETUP_XSK_POOL support option IFF_NOT_USE_DMA_ADDR

[Xuan Zhuo]

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 <xuanz...@linux.alibaba.com>
Reviewed-by: Dust Li <dust...@linux.alibaba.com>
---
 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