From: Álvaro Fernández Rojas Date: Wed, 17 Mar 2021 10:29:27 +0000 (+0100) Subject: net: dsa: b53: support legacy tags X-Git-Tag: accepted/tizen/unified/20230118.172025~7335^2~510^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=46c5176c586c81306bf9e7024c13b95da775490f;p=platform%2Fkernel%2Flinux-rpi.git net: dsa: b53: support legacy tags These tags are used on BCM5325, BCM5365 and BCM63xx switches. Signed-off-by: Álvaro Fernández Rojas Acked-by: Florian Fainelli Signed-off-by: David S. Miller --- diff --git a/drivers/net/dsa/b53/Kconfig b/drivers/net/dsa/b53/Kconfig index f9891a8..90b5251 100644 --- 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 diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 9bd51c2..8d5a82d 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -2055,15 +2055,17 @@ enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port, { 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 */