net: dsa: bcm_sf2: Disable learning for ASP port

We don't want to enable learning for the ASP port since it only receives
directed traffic, this allows us to bypass ARL-driven forwarding rules
which could conflict with Broadcom tags and/or CFP forwarding.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 368ead87e07a322c1fe0f42281ebd17f3a93ba1f..affa5c6e135c3ba505c66b121f6c42065356ce7c 100644 (file)
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -178,9 +178,17 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
        core_writel(priv, reg, CORE_DIS_LEARN);
 
        /* Enable Broadcom tags for that port if requested */
-       if (priv->brcm_tag_mask & BIT(port))
+       if (priv->brcm_tag_mask & BIT(port)) {
                b53_brcm_hdr_setup(ds, port);
 
+               /* Disable learning on ASP port */
+               if (port == 7) {
+                       reg = core_readl(priv, CORE_DIS_LEARN);
+                       reg |= BIT(port);
+                       core_writel(priv, reg, CORE_DIS_LEARN);
+               }
+       }
+
        /* Configure Traffic Class to QoS mapping, allow each priority to map
         * to a different queue number
         */