linux-kernel - [PATCH RFC v1 net-next 10/12] netfilter: nft_flow_offload: Add DEV_PATH_MTK_WDMA to nft_dev_path

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Message-ID: <20241013185509.4430-11-ericwouds@gmail.com>
Date: Sun, 13 Oct 2024 20:55:06 +0200
From: Eric Woudstra <ericwouds@...il.com>
To: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Jozsef Kadlecsik <kadlec@...filter.org>,
	Roopa Prabhu <roopa@...dia.com>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	"Frank Wunderlich" <frank-w@...lic-files.de>,
	Daniel Golle <daniel@...rotopia.org>,
	Eric Woudstra <ericwouds@...il.com>
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	coreteam@...filter.org,
	bridge@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH RFC v1 net-next 10/12] netfilter: nft_flow_offload: Add DEV_PATH_MTK_WDMA to nft_dev_path_info()

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@...il.com>
---
 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