Subject: [PATCH RFC v1 net-next 10/12] netfilter: nft_flow_offload: Add DEV_PATH_MTK_WDMA to nft_dev_path_info()

From: Eric Woudstra <[email-masked]>
Date: Sun, 13 Oct 2024 20:55:06 +0200

In case of using mediatek wireless, in nft_dev_fill_forward_path(), the
forward path is filled, ending with mediatek wlan1.

Because DEV_PATH_MTK_WDMA is unknown inside nft_dev_path_info() it returns
with info.indev = NULL. Then nft_dev_forward_path() returns without
setting the direct transmit parameters.

This results in a neighbor transmit, and direct transmit not possible.
But we want to use it for flow between bridged interfaces.

So this patch adds DEV_PATH_MTK_WDMA to nft_dev_path_info() and makes
direct transmission possible.

Signed-off-by: Eric Woudstra <[email-masked]>
---
 net/netfilter/nft_flow_offload.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c
index 6719a810e9b5..2923286d475e 100644
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -106,6 +106,7 @@ static void nft_dev_path_info(const struct net_device_path_stack *stack,
 		switch (path->type) {
 		case DEV_PATH_ETHERNET:
 		case DEV_PATH_DSA:
+		case DEV_PATH_MTK_WDMA:
 		case DEV_PATH_VLAN:
 		case DEV_PATH_PPPOE:
 			info->indev = path->dev;
@@ -114,7 +115,7 @@ static void nft_dev_path_info(const struct net_device_path_stack *stack,
 
 			if (path->type == DEV_PATH_ETHERNET)
 				break;
-			if (path->type == DEV_PATH_DSA) {
+			if (path->type == DEV_PATH_DSA || path->type == DEV_PATH_MTK_WDMA) {
 				i = stack->num_paths;
 				break;
 			}
-- 
2.45.2