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From 46c5176c586c81306bf9e7024c13b95da775490f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Wed, 17 Mar 2021 11:29:27 +0100
Subject: [PATCH] net: dsa: b53: support legacy tags
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
These tags are used on BCM5325, BCM5365 and BCM63xx switches.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/b53/Kconfig | 1 +
drivers/net/dsa/b53/b53_common.c | 12 +++++++-----
2 files changed, 8 insertions(+), 5 deletions(-)
--- a/drivers/net/dsa/b53/Kconfig
+++ b/drivers/net/dsa/b53/Kconfig
@@ -3,6 +3,7 @@ menuconfig B53
tristate "Broadcom BCM53xx managed switch support"
depends on NET_DSA
select NET_DSA_TAG_BRCM
+ select NET_DSA_TAG_BRCM_LEGACY
select NET_DSA_TAG_BRCM_PREPEND
help
This driver adds support for Broadcom managed switch chips. It supports
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2024,15 +2024,17 @@ enum dsa_tag_protocol b53_get_tag_protoc
{
struct b53_device *dev = ds->priv;
- /* Older models (5325, 5365) support a different tag format that we do
- * not support in net/dsa/tag_brcm.c yet.
- */
- if (is5325(dev) || is5365(dev) ||
- !b53_can_enable_brcm_tags(ds, port, mprot)) {
+ if (!b53_can_enable_brcm_tags(ds, port, mprot)) {
dev->tag_protocol = DSA_TAG_PROTO_NONE;
goto out;
}
+ /* Older models require a different 6 byte tag */
+ if (is5325(dev) || is5365(dev) || is63xx(dev)) {
+ dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY;
+ goto out;
+ }
+
/* Broadcom BCM58xx chips have a flow accelerator on Port 8
* which requires us to use the prepended Broadcom tag type
*/
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