Provide customized field selection for ecmp load-balancing

[Ananth Suryanarayana]

This bug is to track control-node changes to provide customized load-balancing support for opencontrail

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/14008
Submitter: Ananth Suryanarayana (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/14030
Submitter: Ananth Suryanarayana (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/14008
Submitter: Ananth Suryanarayana (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/14008
Committed: http://github.org/Juniper/contrail-controller/commit/8bee7e0eb64210bce8d7abbbe34651e06dc176d3
Submitter: Zuul
Branch: master

commit 8bee7e0eb64210bce8d7abbbe34651e06dc176d3
Author: Ananth Suryanarayana <email address hidden>
Date: Mon Oct 5 10:14:03 2015 -0700

Schema changes for customized route's load-balance attribute

o List of packet fields to hash for lad balancing
o Additional actions such as 'source-bias'

Change-Id: I9820b39345707b045c934a2a4ae92ff2511976d0
Partial-Bug: #1498765

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/14030
Submitter: Ananth Suryanarayana (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/14030
Committed: http://github.org/Juniper/contrail-controller/commit/19bb7bd7806db03242f4bd2f183f19ed353802b6
Submitter: Zuul
Branch: master

commit 19bb7bd7806db03242f4bd2f183f19ed353802b6
Author: Ananth Suryanarayana <email address hidden>
Date: Wed Oct 7 01:18:53 2015 -0700

Add support to exchange load-balance bgp extended community

Also addressed review comments from Nischal

o Exchange list of fields to hash upon during ecmp load-balancing
o Fields: L2 Source Address, L2 Dest Address, L3 Source Address, L3 Dest Address,
L4 Protocol, L4 Source Port, L4 Dest Port
o Room for future load-balance fields addition such as interface
o Additional actions field such as source_bias boolean
o Room for future actions such as urpf
o This info is sent to agents via xmpp
o This info is sent to other bgp peers via opaque extended community

o Cleanup hard-coded extended community types with defines

Change-Id: I22371305eb9721ed621979f53382f1fdc495fc1b
Closes-Bug: #1498765

[Nischal Sheth (nsheth)]

Need to add tests that combine customized load balancing and service chaining.

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/14523
Submitter: Ananth Suryanarayana (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/14523
Committed: http://github.org/Juniper/contrail-controller/commit/bbfb5fcaa1b8f9ac4e428a77e1d369e7b8a752a5
Submitter: Zuul
Branch: master

commit bbfb5fcaa1b8f9ac4e428a77e1d369e7b8a752a5
Author: Ananth Suryanarayana <email address hidden>
Date: Mon Oct 19 11:09:49 2015 -0700

Add load-balance attribute for static routes and service chains

During service chain route update, borrow load-balanace attribute
from connected_path if present. If not, borrow from original
path if present.

Static routes automatically get similar treatment. Test cases have
been added to verify the same.

Change-Id: I83ff19e394075dea4dfb7f03b957b6fd5e2bb55e
Closes-Bug: #1498765

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/14861
Submitter: Nischal Sheth (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/14861
Committed: http://github.org/Juniper/contrail-controller/commit/f42b6a606353a21cb2dbf29da5e6774cfc6fe21a
Submitter: Zuul
Branch: master

commit f42b6a606353a21cb2dbf29da5e6774cfc6fe21a
Author: Nischal Sheth <email address hidden>
Date: Tue Nov 3 10:42:56 2015 -0800

Minor cleanup for load_balance.[cc|h]

- Fix cpplint nits
- Minor tweak to LoadBalance::ToString

Change-Id: I4bd342c49c939a3fea9263b48b06f69b16836c39
Closes-Bug: 1498765

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/15407
Submitter: Manish Singh (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/15407
Committed: http://github.org/Juniper/contrail-controller/commit/98f10a8a5167298fc79077960f400bf34735cdfe
Submitter: Zuul
Branch: master

commit 98f10a8a5167298fc79077960f400bf34735cdfe
Author: Manish Singh <email address hidden>
Date: Wed Nov 25 08:03:36 2015 +0530

Schema changes of Ecmp load balancing configuration.

This change enables user to choose fields to do load balance in ecmp nexthops.
These criterias can be specified at interface/VN/global level.

Change-Id: Ibd349bc156deaff77af4b126f953077f8344d339
Partial-bug: 1498765

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/16283
Submitter: Manish Singh (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/16283
Committed: http://github.org/Juniper/contrail-controller/commit/f6dd3dc4750ea0fa18c3e0989d7519de05c19511
Submitter: Zuul
Branch: master

commit f6dd3dc4750ea0fa18c3e0989d7519de05c19511
Author: Manish Singh <email address hidden>
Date: Wed Jan 13 16:07:24 2016 +0530

ECMP load balance configuration agent changes.

ECMP load balance parameters can be configured at global, vn and interface level.
Priority (highest to lowest)- Interface, VN, Global.
This config is stored in path. When path is exported to controller, fields in
load-balance-fields are populated using the same. Agent currently provides field
based hashing only. So every controller message will have load-balance-type set
to field-hash. Similarly reflected routes from CN will be used to extract fields
to be used for hashing and populated in respective path.
Agent by default will use all fields.

Closes-bug: 1498765

Conflicts:
 src/vnsw/agent/controller/controller_peer.cc
 src/vnsw/agent/openstack/instance_service_server.cc
 src/vnsw/agent/oper/inet_unicast_route.cc
 src/vnsw/agent/oper/metadata_ip.cc
 src/vnsw/agent/oper/vm_interface.cc
 src/vnsw/agent/test/test_util.cc

Change-Id: I652f65b5b6b56fe20e26a0a0bb7cdf6799b98811