From: Sayantan Nandy <sayantann11@gmail.com>
To: lorenzo@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, netdev@vger.kernel.org,
sayantan.nandy@airoha.com, bread.hsu@airoha.com,
kuldeep.malik@airoha.com, aniket.negi@airoha.com,
rajeev.kumar@airoha.com, Sayantan Nandy <sayantann11@gmail.com>
Subject: [PATCH] net: airoha_eth: increase max mtu to 9220 for DSA jumbo frames
Date: Thu, 15 Jan 2026 14:18:37 +0530 [thread overview]
Message-ID: <20260115084837.52307-1-sayantann11@gmail.com> (raw)
The Industry standard for jumbo frame MTU is 9216 bytes. When using DSA
sub-system, an extra 4 byte tag is added to each frame. To allow users
to set the standard 9216-byte MTU via ifconfig,increase AIROHA_MAX_MTU
to 9220 bytes (9216+4).
Signed-off-by: Sayantan Nandy <sayantann11@gmail.com>
---
drivers/net/ethernet/airoha/airoha_eth.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/airoha/airoha_eth.h b/drivers/net/ethernet/airoha/airoha_eth.h
index fbbc58133364..20e602d61e61 100644
--- a/drivers/net/ethernet/airoha/airoha_eth.h
+++ b/drivers/net/ethernet/airoha/airoha_eth.h
@@ -21,7 +21,7 @@
#define AIROHA_MAX_NUM_IRQ_BANKS 4
#define AIROHA_MAX_DSA_PORTS 7
#define AIROHA_MAX_NUM_RSTS 3
-#define AIROHA_MAX_MTU 9216
+#define AIROHA_MAX_MTU 9220
#define AIROHA_MAX_PACKET_SIZE 2048
#define AIROHA_NUM_QOS_CHANNELS 4
#define AIROHA_NUM_QOS_QUEUES 8
--
2.43.0
next reply other threads:[~2026-01-15 8:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-15 8:48 Sayantan Nandy [this message]
2026-01-15 13:40 ` [PATCH] net: airoha_eth: increase max mtu to 9220 for DSA jumbo frames Lorenzo Bianconi
2026-01-16 3:05 ` Jakub Kicinski
2026-01-15 17:41 ` Andrew Lunn
2026-01-15 19:10 ` Benjamin Larsson
2026-01-16 1:08 ` Andrew Lunn
2026-01-16 10:48 ` Benjamin Larsson
2026-01-16 14:21 ` Andrew Lunn
[not found] ` <CADJVu8XP_wBudwOrT1OLhcZ3-9Qoci8FQzw+yyxnogiC2Asx5w@mail.gmail.com>
2026-01-16 14:56 ` Andrew Lunn
2026-01-16 15:05 ` Benjamin Larsson
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