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e63cdd216b9d5c74509442d85867c66b3958a7c3
neutron/doc/source/contributor/internals/l2_agent_extensions.rst
Brian Haley e63cdd216b Alphabetize some of the admin and contrib docs 
Over time docs were added or updated such that they were
no longer in alphabetical order based on the index order
or their title strings. Tried to fix it up a bit along
with some capitalization.

Trivialfix

Change-Id: I948b2a1c86faaffed07adcf0198a3fba72401abe
2023-09-18 13:12:31 -04:00

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L2 Agent Extensions

L2 agent extensions are part of a generalized L2/L3 extension framework. See agent extensions <agent_extensions>.

Open vSwitch agent API

  • neutron.plugins.ml2.drivers.openvswitch.agent.ovs_agent_extension_api

Open vSwitch agent API object includes two methods that return wrapped and hardened bridge objects with cookie values allocated for calling extensions:

#. request_int_br
#. request_tun_br

Bridge objects returned by those methods already have new default cookie values allocated for extension flows. All flow management methods (add_flow, mod_flow, ...) enforce those allocated cookies.

Linuxbridge agent API

  • neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_agent_extension_api

The Linux bridge agent extension API object includes a method that returns an instance of the IptablesManager class, which is used by the L2 agent to manage security group rules:

#. get_iptables_manager