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airoha: backport patch fixing offload support with GDM2 present

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Backport upstream patch fixing offload support in the presence of GDM2
interface.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi
2025-11-18 12:50:50 +01:00
parent bcae238390
commit b7aa0aa9bf
1 changed files with 31 additions and 0 deletions
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target/linux/airoha/patches-6.12/110-v6.19-net-airoha-Do-not-loopback-traffic-to-GDM2-if-it-is-.patch
+31
View File
@@ -0,0 +1,31 @@
From 8e0a754b0836d996802713bbebc87bc1cc17925c Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Thu, 13 Nov 2025 18:19:38 +0100
Subject: [PATCH] net: airoha: Do not loopback traffic to GDM2 if it is
available on the device
Airoha_eth driver forwards offloaded uplink traffic (packets received
on GDM1 and forwarded to GDM{3,4}) to GDM2 in order to apply hw QoS.
This is correct if the device does not support a dedicated GDM2 port.
In this case, in order to enable hw offloading for uplink traffic,
the packets should be sent to GDM{3,4} directly.
Fixes: 9cd451d414f6 ("net: airoha: Add loopback support for GDM2")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251113-airoha-hw-offload-gdm2-fix-v1-1-7e4ca300872f@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/ethernet/airoha/airoha_ppe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/airoha/airoha_ppe.c
+++ b/drivers/net/ethernet/airoha/airoha_ppe.c
@@ -308,7 +308,7 @@ static int airoha_ppe_foe_entry_prepare(
if (!airoha_is_valid_gdm_port(eth, port))
return -EINVAL;
- if (dsa_port >= 0)
+ if (dsa_port >= 0 || eth->ports[1])
pse_port = port->id == 4 ? FE_PSE_PORT_GDM4
: port->id;
else