[PATCH v5 net-next 10/14] netfilter: nft_flow_offload: Add DEV_PATH_MTK_WDMA to nft_dev_path_info()

Eric Woudstra
2025-02-04T21:31:14Z

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 <ericwouds@gmail.com>
---
net/netfilter/nft_flow_offload.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c
index 323c531c7046..b9e6d9e6df66 100644
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -105,6 +105,7 @@ 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;
@@ -117,6 +118,10 @@ static void nft_dev_path_info(const struct net_device_path_stack *stack,
i = stack->num_paths;
break;
}
+ if (path->type == DEV_PATH_MTK_WDMA) {
+ i = stack->num_paths;
+ break;
+ }

/* DEV_PATH_VLAN and DEV_PATH_PPPOE */
if (info->num_encaps >= NF_FLOW_TABLE_ENCAP_MAX) {
--
2.47.1