32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
From 31bfc2d42cae6e8b1440fc5db3f0aba6c5d7e602 Mon Sep 17 00:00:00 2001
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From: Florian Fainelli <f.fainelli@gmail.com>
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Date: Mon, 30 Mar 2020 14:38:49 -0700
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Subject: [PATCH] net: dsa: b53: Deny enslaving port 7 for 7278 into a bridge
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On 7278, port 7 connects to the ASP which should only receive frames
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through the use of CFP rules, it is not desirable to have it be part of
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a bridge at all since that would make it pick up unwanted traffic that
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it may not even be able to filter or sustain.
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/dsa/b53/b53_common.c | 6 ++++++
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1 file changed, 6 insertions(+)
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--- a/drivers/net/dsa/b53/b53_common.c
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+++ b/drivers/net/dsa/b53/b53_common.c
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@@ -1770,6 +1770,12 @@ int b53_br_join(struct dsa_switch *ds, i
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u16 pvlan, reg;
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unsigned int i;
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+ /* On 7278, port 7 which connects to the ASP should only receive
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+ * traffic from matching CFP rules.
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+ */
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+ if (dev->chip_id == BCM7278_DEVICE_ID && port == 7)
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+ return -EINVAL;
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+
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/* Make this port leave the all VLANs join since we will have proper
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* VLAN entries from now on
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*/
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