[PATCH net-next 2/2] net: dsa: b53: support legacy tags
From: Álvaro Fernández Rojas <hidden>
Date: 2021-03-15 14:50:46
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Subsystem:
broadcom b53/sf2 ethernet switch driver, networking drivers, networking [dsa], the rest · Maintainers:
Florian Fainelli, Jonas Gorski, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrew Lunn, Vladimir Oltean, Linus Torvalds
These tags are used on BCM5325, BCM5365 and BCM63xx switches. Signed-off-by: Álvaro Fernández Rojas <redacted> --- drivers/net/dsa/b53/Kconfig | 1 + drivers/net/dsa/b53/b53_common.c | 9 +++++++-- 2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/b53/Kconfig b/drivers/net/dsa/b53/Kconfig
index f9891a81c808..90b525160b71 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 a162499bcafc..a583948cdf4f 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c@@ -2034,6 +2034,7 @@ static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port, switch (tag_protocol) { case DSA_TAG_PROTO_BRCM: + case DSA_TAG_PROTO_BRCM_LEGACY: case DSA_TAG_PROTO_BRCM_PREPEND: dev_warn(ds->dev, "Port %d is stacked to Broadcom tag switch\n", port);
@@ -2055,12 +2056,16 @@ enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port, /* 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; } + 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 */
--
2.20.1