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Mon, 29 Jun 2026 05:33:28 -0700 (PDT) From: Daniel Pawlik To: netfilter-devel@vger.kernel.org, netdev@vger.kernel.org Cc: pablo@netfilter.org, fw@strlen.de, phil@nwl.cc, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, andrew+netdev@lunn.ch, razor@blackwall.org, idosch@nvidia.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, bridge@lists.linux.dev, coreteam@netfilter.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rchen14b@gmail.com, lorenzo@kernel.org, Daniel Pawlik Subject: [PATCH 4/5] netfilter: nf_flow_table_path: handle DEV_PATH_MTK_WDMA in path info Date: Mon, 29 Jun 2026 14:32:52 +0200 Message-ID: <20260629123253.1912621-5-pawlik.dan@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260629123253.1912621-1-pawlik.dan@gmail.com> References: <20260629123253.1912621-1-pawlik.dan@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Ryan Chen Without this change, nft_dev_path_info() hits the default -ENOENT path for WiFi bridge offload via WDMA on MT7996. When a bridged flow goes through the MT7996 WiFi device, the DEV_PATH_MTK_WDMA step does not set h_source, causing the PPE entry to receive a zero source MAC and packets to stall in both software fastpath and hardware path. Based on a MediaTek SDK patch by Bo-Cun Chen . Signed-off-by: Ryan Chen Signed-off-by: Daniel Pawlik --- net/netfilter/nf_flow_table_path.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/netfilter/nf_flow_table_path.c b/net/netfilter/nf_flow_table_path.c index 6c470854127f..580aa1db3cb4 100644 --- a/net/netfilter/nf_flow_table_path.c +++ b/net/netfilter/nf_flow_table_path.c @@ -219,6 +219,10 @@ static int nft_dev_path_info(const struct net_device_path_stack *stack, } info->xmit_type = FLOW_OFFLOAD_XMIT_DIRECT; break; + case DEV_PATH_MTK_WDMA: + if (is_zero_ether_addr(info->h_source)) + memcpy(info->h_source, path->dev->dev_addr, ETH_ALEN); + break; default: return -1; } -- 2.54.0