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ethernet: fix DMAC check and skip unnecessary ones (VPP-1868)

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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
This commit is contained in:
John Lo
2020-05-12 22:34:39 -04:00
committed by Damjan Marion
parent 94f3295d38
commit 4a302ee7c7
12 changed files with 177 additions and 73 deletions
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extras/deprecated/ixge/ixge.c
+4 -2
View File
@@ -2605,10 +2605,12 @@ ixge_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags)
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;
}