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authorJohn Lo <loj@cisco.com>2016-04-12 18:20:39 -0400
committerGerrit Code Review <gerrit@fd.io>2016-04-14 23:06:54 +0000
commitd1f5d047988655a001655357f1ce35152161bedf (patch)
treed2a3f442190a352e8ed8cbfab7fefbf58e994133 /vnet/test
parente10e372e5a7a1be385e77a8062a2573eb58b29d8 (diff)
Change ARP and IP6-ND nodes to use interface-output node for output
The current mechanism for setting up arp-input and ip6-discover-neighbor output nodes for interfaces using their interface link up/down callback function is inefficient and has potential timing issue, as observed for bonded interface. Now both nodes will setup output interface sw_if_index in the the sw_if_index[VLIB_TX] field of current packet buffer and then use the interface-ouput node to tx the packet. One side effect is that vlib_node_add_next_with_slot() needs to be modified to allow the same output node-id to be put at the specified slot, even if another slot contain that same node-id already exist. This requirement is caused by BVI support where all loopback interfaces set up as BVIs will have the same output node-id being l2-input while, for output-interface node, the output slot must match the hw_if_index of the interface. Change-Id: I18bd1d4fe9bea047018796f7b8a4d4c20ee31d6e Signed-off-by: John Lo <loj@cisco.com>
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