[fgnhgorch] Changes for Fine Grained ECMP #1315
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… and misc. improvements
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@daall Could you help review tests/test_fgnhg.py. There are some |
qiluo-msft
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daall
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retest vs please |
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* Fine grained ECMP initial commit * Fix compilation, test failures and add logic to query SAI_NEXT_HOP_GROUP_ATTR_REAL_SIZE from SAI * Misc fixes after migrating branch * Misc-fixes * Add support to fgnhgorch for neighbor and interface availability changes * fgnhg group/prefix/member addition and deletion * fix indentation and address comment * Improve error handling and add support for crm and neigh refcounts * Temporarily disable dynamic changes to route from fine grained to standard ecmp * Add checks to limit Fine Grained ECMP to default VRF * handle fgnhg prefix addition deletion with route bulker * fix indentation * Add handling for neigh edge case scenarios and improve routeorch bulker integration * write route entry to state_db * Fix bug with add and remove nh in a bank at the same time * Improve test coverage and fix issues with multi-nh changes, misc code improvements * Improve distribution of hash buckets per nh when hash buckets are not divisible by # of buckets * Incorporate review comments v1 * Reduce exposure of private routeorch functions/variables outside of routeorch * Fix an uninitialized variable error found in testing * Change test_fgnhg.py to use the new framework to validate db entries * Remove exposure of routeorch nextHopGroupCounts outside of routeorch, and misc. improvements * camelCase changes for fgnhgorch * RouteOrch add/removeRoutePost do not need logic to reroute calls to fgnhgorch * camelCase changes v2
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This reverts commit fee1716.
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Feb 28, 2022
Add FG_ROUTE_TABLE to backup database for warm reboot support for fgnhg.
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What I did
Added fine grained ECMP changes.
Why I did it
To support consistent and layered hashing in SONiC.
How I verified it
Verified using VS swss test cases
Details if related
HLD: https://github.com/Azure/SONiC/blob/master/doc/ecmp/fine_grained_next_hop_hld.md
SAI: https://github.com/opencomputeproject/SAI/blob/master/doc/ECMP/Ordered_and_Fine_Grained_ECMP.md