ethernet: fix DMAC check and skip unnecessary ones (VPP-1868)
Fix and optimize DMAC check in ethernet-input node to utilize NIC or
driver which support L3 DMAC-filtering mode so that DMAC check can be
bypassed safely for interfaces/sub-interfaces in L3 mode.
Checking of interface in L3-DMAC-filtering state to avoid DMAC check
require the following:
a) Fix interface driver init sequence for devices which supports L3
DMAC-filtering to indicate its capability and initialize interface
to L3 DMAC-filtering state.
b) Fix ethernet_set_flags() function and its associated callback
flags_change() functions registered by various drivers in interface
infra to provide proper L3 DMAC filtering status.
Maintain interface/sub-interface L3 config count so DMAC checks can be
bypassed if L3 forwarding is not setup on any main/sub-interfaces.
Type: fix
Ticket: VPP-1868
Signed-off-by: John Lo <loj@cisco.com>
Change-Id: I204d90459c13e9e486cfcba4e64e3d479bc9f2ae
diff --git a/extras/deprecated/ixge/ixge.c b/extras/deprecated/ixge/ixge.c
index 6ab79c9..471fbed 100644
--- a/extras/deprecated/ixge/ixge.c
+++ b/extras/deprecated/ixge/ixge.c
@@ -2605,10 +2605,12 @@
old = r->filter_control;
- if (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
+ if (flags == ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
r->filter_control = old | (1 << 9) /* unicast promiscuous */ ;
- else
+ else if (flags == ETHERNET_INTERFACE_FLAGS_DEFAULT_L3)
r->filter_control = old & ~(1 << 9);
+ else
+ return ~0;
return old;
}