netdev - [PATCH net-next v2] net: airoha: Add missing filed to ppe_mbox

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Message-Id: <20250417-airoha-en7581-fix-ppe_mbox_data-v2-1-43433cfbe874@kernel.org>
Date: Thu, 17 Apr 2025 11:30:47 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Lorenzo Bianconi <lorenzo@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org, 
 Simon Horman <horms@...nel.org>
Subject: [PATCH net-next v2] net: airoha: Add missing filed to
 ppe_mbox_data struct

The official Airoha EN7581 firmware requires adding max_packet filed in
ppe_mbox_data struct while the unofficial one used to develop the Airoha
EN7581 flowtable support does not require this field.
This patch does not introduce any real backwards compatible issue since
EN7581 fw is not publicly available in linux-firmware or other
repositories (e.g. OpenWrt) yet and the official fw version will use this
new layout. For this reason this change needs to be backported.

Fixes: 23290c7bc190d ("net: airoha: Introduce Airoha NPU support")
Reviewed-by: Simon Horman <horms@...nel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
Changes in v2:
- Add more details to commit log
- Link to v1: https://lore.kernel.org/r/20250415-airoha-en7581-fix-ppe_mbox_data-v1-1-4408c60ba964@kernel.org
---
 drivers/net/ethernet/airoha/airoha_npu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index 7a5710f9ccf6a4a4f555ab63d67cb6b318de9b52..16201b5ce9f27866896226c3611b4a154d19bc2c 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -104,6 +104,7 @@ struct ppe_mbox_data {
 			u8 xpon_hal_api;
 			u8 wan_xsi;
 			u8 ct_joyme4;
+			u8 max_packet;
 			int ppe_type;
 			int wan_mode;
 			int wan_sel;

---
base-commit: df8398fb7bb7a0e509200af56b79343aa133b7d6
change-id: 20250414-airoha-en7581-fix-ppe_mbox_data-2f1880f7486c

Best regards,
-- 
Lorenzo Bianconi <lorenzo@...nel.org>