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[v3,net-next,14/15] net: dsa: felix: use promisc on master for PTP with tag_8021q

Message ID 20210118161731.2837700-15-olteanv@gmail.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series tag_8021q for Ocelot switches | expand

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netdev/cc_maintainers warning 1 maintainers not CCed: vladimir.oltean@nxp.com
netdev/source_inline success Was 0 now: 0
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netdev/module_param success Was 0 now: 0
netdev/build_32bit fail Errors and warnings before: 7 this patch: 7
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 7 lines checked
netdev/build_allmodconfig_warn fail Errors and warnings before: 7 this patch: 7
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netdev/stable success Stable not CCed

Commit Message

Vladimir Oltean Jan. 18, 2021, 4:17 p.m. UTC 
From: Vladimir Oltean <vladimir.oltean@nxp.com>

This is for the "no extraction IRQ" workaround, where the DSA master on
LS1028A (enetc) serves as a de-facto irqchip.

It needs to be promiscuous so that it will never drop a PTP frame (sent
to the 01-80-c2-00-00-0e multicast MAC address), otherwise the tagger
will get confused about which Ethernet PTP frame corresponds to which
PTP frame over the MMIO registers.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
Changes in v3:
None.

Changes in v2:
Patch is new.

 net/dsa/tag_ocelot_8021q.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/net/dsa/tag_ocelot_8021q.c b/net/dsa/tag_ocelot_8021q.c
index 290880b94bb3..430d77d0b8eb 100644
--- a/net/dsa/tag_ocelot_8021q.c
+++ b/net/dsa/tag_ocelot_8021q.c
@@ -53,6 +53,7 @@  static struct dsa_device_ops ocelot_netdev_ops = {
 	.xmit			= ocelot_xmit,
 	.rcv			= ocelot_rcv,
 	.overhead		= VLAN_HLEN,
+	.promisc_on_master	= true,
 };
 
 MODULE_LICENSE("GPL v2");