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kernel: backport MediaTek jumbo frame support

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Allow MTU up to 2026 on mediatek, ramips/mt7621 targets.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
This commit is contained in:
DENG Qingfang
2022-02-03 20:07:00 +08:00
committed by Stijn Tintel
parent 7a1ce08bdb
commit 637a3aaa6f
3 changed files with 286 additions and 0 deletions
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36
target/linux/generic/backport-5.10/763-v5.11-net-dsa-mt7530-enable-MTU-normalization.patch Normal file
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@@ -0,0 +1,36 @@
From 771c8901568dd8776a260aa93db41be88a60389e Mon Sep 17 00:00:00 2001
From: DENG Qingfang <dqfext@gmail.com>
Date: Fri, 11 Dec 2020 01:03:22 +0800
Subject: [PATCH] net: dsa: mt7530: enable MTU normalization
MT7530 has a global RX length register, so we are actually changing its
MRU.
Enable MTU normalization for this reason.
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Acked-by: Landen Chao <landen.chao@mediatek.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20201210170322.3433-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/mt7530.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1703,6 +1703,7 @@ mt7530_setup(struct dsa_switch *ds)
*/
dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent;
ds->configure_vlan_while_not_filtering = true;
+ ds->mtu_enforcement_ingress = true;
if (priv->id == ID_MT7530) {
regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
@@ -1947,6 +1948,7 @@ mt7531_setup(struct dsa_switch *ds)
}
ds->configure_vlan_while_not_filtering = true;
+ ds->mtu_enforcement_ingress = true;
/* Flush the FDB table */
ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);