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[action] [PR:21146] Apply Zebra fpm backpressure patches to dplane_fpm_sonic#21356

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mssonicbld merged 1 commit intosonic-net:202411from
mssonicbld:cherry/202411/21146
Jan 9, 2025
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[action] [PR:21146] Apply Zebra fpm backpressure patches to dplane_fpm_sonic#21356
mssonicbld merged 1 commit intosonic-net:202411from
mssonicbld:cherry/202411/21146

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Why I did it

Reduce high CPU usage on zebra after performing port toggle on all interfaces simultaneously

How I did it

Apply zebra fpm backpressure patches from FRR mainline to dplane_fpm_sonic:

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#### Why I did it

Reduce high CPU usage on zebra after performing port toggle on all interfaces simultaneously

#### How I did it

Apply zebra fpm backpressure patches from FRR mainline to dplane_fpm_sonic:
* zebra: Use built in data structure counter (FRRouting/frr#16221)
* Zebra fpm backpressure (FRRouting/frr#16220)

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@mssonicbld
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Original PR: #21146

@mssonicbld
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/azp run Azure.sonic-buildimage

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Azure Pipelines successfully started running 1 pipeline(s).

@mssonicbld mssonicbld merged commit 829dcde into sonic-net:202411 Jan 9, 2025
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