openwrt/target/linux/generic/pending-5.15/734-net-ethernet-mtk_eth_soc-ppe-fix-L2-offloading-with-.patch
Daniel Golle 625d19c1e2 generic: sync MediaTek Ethernet driver with upstream
Import commits from upstream Linux replacing some downstream patches.
Move accepted patches from pending-{5.15,6.1} to backport-{5.15,6.1}.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit f631c7bbb1)
2023-09-04 23:00:34 +01:00

34 lines
959 B
Diff

From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 27 Dec 2022 15:02:51 +0100
Subject: [PATCH] net: ethernet: mtk_eth_soc: ppe: fix L2 offloading with DSA
untagging offload enabled
Check for skb metadata in order to detect the case where the DSA header is not
present.
Fixes: 2d7605a72906 ("net: ethernet: mtk_eth_soc: enable hardware DSA untagging")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -8,6 +8,7 @@
#include <linux/platform_device.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
+#include <net/dst_metadata.h>
#include <net/dsa.h>
#include "mtk_eth_soc.h"
#include "mtk_ppe.h"
@@ -781,7 +782,9 @@ void __mtk_ppe_check_skb(struct mtk_ppe
skb->dev->dsa_ptr->tag_ops->proto != DSA_TAG_PROTO_MTK)
goto out;
- tag += 4;
+ if (!skb_metadata_dst(skb))
+ tag += 4;
+
if (get_unaligned_be16(tag) != ETH_P_8021Q)
break;