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Add a hash_clean_and_free() function as well as convert
the code to use it. This function also takes a double
pointer to the hash to set it NULL. Also it cleanly
does nothing if the pointer is NULL( as a bunch of
code tested for ).
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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Coverity rightly points out that a call into zebra_l2_bridge_if_vlan_find
is NULL checked 4/5 times. Let's make it 5/5
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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vni removal
This patch addresses following issues,
- When the VLAN-VNI mapping is configured via a map and not using
individual VXLAN interfaces, upon removal of a VNI ensure that the
remote FDB entries are uninstalled correctly.
- When VNI configuration is performed using VLAN-VNI mapping (i.e., without
individual VXLAN interfaces) and flooded traffic is handled via multicast,
the multicast group corresponding to the VNI needs to be explicitly read
from the bridge FDB. This is relevant in the case of netlink interface to
the kernel and for the scenario where a new VNI is provisioned or comes up.
Signed-off-by: Sharath Ramamurthy <sramamurthy@nvidia.com>
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Multiple vlan aware bridge data structure changes and its corresponding bridge
handling changes.
A new vlan-table is maintained for each bridge which records the zebra_l2_bridge_vlan
entry. zebra_l2_bridge_vlan maps vlan to access_bd associated to this bridge.
Existing zebra_evpn_access_bd structure is vlan aware which is now modified to be
(vlan, bridge) aware.
Whenever a new access_bd is instantiated, a corresponding entry is also recorded
in the zebra l2 bridge for the vlan.
When the access_bd is dereferenced or whenever a bridge is deleted, the
association is cleaned up.
Signed-off-by: Sharath Ramamurthy <sramamurthy@nvidia.com>
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