zebra: Only notify dplane work pthread when needed #17062
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ton31337
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The fpm_nl_process function was getting the count of the total number of ctx's processed. This leads to after having processed 1 context to always signal the dataplane that there is work to do. Change the code to only notify the dplane worker when a context was actually added to the outgoing context queue. Signed-off-by: Donald Sharp <sharpd@nvidia.com>
When the fpm_process_queue has run out of space but has written to the fpm output buffer, schedule it to wake up immediately, as that the write will go out pretty much immediately, since it was scheduled first. If the fpm_process_queue has not written to the output buffer then delay the processing by 10 milliseconds to allow a possibly backed up write processing to have a chance to complete it's work. Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Currently the max message size is 4k. With a 256 way ecmp FRR is seeing message sizes that are in the 6k size. There is desire to allow this to increase as well to 512. Since the multipath size directly effects how big the message may be when sending the routes ecmp let's give a bit of headroom for this value when compiling FRR at greater sizes. Additionally since we know not everyone is using such large ecmp, allow them to build as appropriate for their use cases. Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
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…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
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…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
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…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
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…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
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#### Why I did it
Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches
| Patch | FRR Pull request|
| ------ |--------- |
| 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch | FRRouting/frr#16967 |
| 0070-Allow-16-bit-size-for-nexthops.patch | FRRouting/frr#17023 |
| 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch | FRRouting/frr#17062 |
| 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch | FRRouting/frr#17076 |
| 0073-remove-in6addr-cmp.patch | FRRouting/frr#17312 |
| 0074-bgp-best-port-reordering.patch | FRRouting/frr#15572 |
| 0075-bgp-mp-info-changes.patch | FRRouting/frr#16961 |
| 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch | FRRouting/frr#17229 |
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VladimirKuk
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…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
prabhataravind
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…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
yanjundeng
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Apr 23, 2025
…net#21199) Why I did it Added patches from FRR to support scale of BGP neighbors to 256/514. Below are the patches Patch FRR Pull request 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr#16967 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr#17023 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229
lguohan
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New patches that were added: Patch FRR Pull request 0086-isisd-lib-add-some-codepoints-usually-shared-with-other-vendors.patch FRRouting/frr#17957 0087-staticd-Add-support-for-SRv6-uA-behavior.patch FRRouting/frr#18198 Removed patches: Patch FRR commit / Pull request 0025-bgp-community-memory-leak-fix.patch FRRouting/frr@e613e12 0028-zebra-fix-parse-attr-problems-for-encap.patch FRRouting/frr@ba5a353 FRRouting/frr@569f9e4 FRRouting/frr@bd4fca1 0030-zebra-backpressure-Zebra-push-back-on-Buffer-Stream-.patch FRRouting/frr@a8efa99 0031-bgpd-backpressure-Add-a-typesafe-list-for-Zebra-Anno.patch FRRouting/frr@705fed7 0033-bgpd-backpressure-cleanup-bgp_zebra_XX-func-args.patch FRRouting/frr@5f379be 0034-gpd-backpressure-Handle-BGP-Zebra-Install-evt-Creat.patch FRRouting/frr@ccfe452 0035-bgpd-backpressure-Handle-BGP-Zebra-EPVN-Install-evt-.patch FRRouting/frr@a07df6f 0036-zebra-backpressure-Fix-Null-ptr-access-Coverity-Issu.patch FRRouting/frr@ed7005d 0037-bgpd-Increase-install-uninstall-speed-of-evpn-vpn-vn.patch FRRouting/frr@9edf45b 0038-zebra-Actually-display-I-O-buffer-sizes.patch FRRouting/frr@8d8f12b 0039-zebra-Actually-display-I-O-buffer-sizes-part-2.patch FRRouting/frr@33dccbe 0040-bgpd-backpressure-Fix-to-withdraw-evpn-type-5-routes.patch FRRouting/frr@f4ba472 0041-bgpd-backpressure-Fix-to-avoid-CPU-hog.patch FRRouting/frr@920bf45 0042-zebra-Use-built-in-data-structure-counter.patch FRRouting/frr@a23a938 0043-zebra-Use-the-ctx-queue-counters.patch FRRouting/frr@34670c4 0044-zebra-Modify-dplane-loop-to-allow-backpressure-to-fi.patch FRRouting/frr@3af381b 0045-zebra-Limit-queue-depth-in-dplane_fpm_nl.patch FRRouting/frr@8926ac1 0046-zebra-Modify-show-zebra-dplane-providers-to-give-mor.patch FRRouting/frr@98b11de 0047-bgpd-backpressure-fix-evpn-route-sync-to-zebra.patch FRRouting/frr@b47a92e 0048-bgpd-backpressure-fix-to-properly-remove-dest-for-bg.patch FRRouting/frr@4395fcd 0049-bgpd-backpressure-Improve-debuggability.patch FRRouting/frr@186db96 0050-bgpd-backpressure-Avoid-use-after-free.patch FRRouting/frr@40965e5 0051-bgpd-backpressure-fix-ret-value-evpn_route_select_in.patch FRRouting/frr@c4bbb5b 0052-bgpd-backpressure-log-error-for-evpn-when-route-inst.patch FRRouting/frr@6cf5b79 0055-bgpd-lib-Include-SID-structure-in-seg6local-nexthop.patch FRRouting/frr@0402551 0059-Fix-BGP-reset-on-suppress-fib-pending-configuration.patch FRRouting/frr#17487 0060-bgpd-Validate-both-nexthop-information-NEXTHOP-and-N.patch FRRouting/frr@a0d2734 0061-dont-print-warning-if-not-a-daemon.patch FRRouting/frr@cecf571 0062-zebra-lib-use-internal-rbtree-per-ns.patch FRRouting/frr#17297 0064-SRv6-BGP-SID-reachability.patch FRRouting/frr#14810 0065-zebra-display-srv6-encapsulation-source-address-when-configured.patch FRRouting/frr@890b67d 0066-lib-fix-srv6-locator-flags-propagated-to-isis.patch FRRouting/frr@03d2ad0 0067-Add-support-for-SRv6-SID-Manager.patch FRRouting/frr#15604 0068-bgpd-Extend-BGP-to-communicate-with-the-SRv6-SID-Manager-to-allocate-release-SRv6-SIDs.patch FRRouting/frr#15676 0069-lib-nexthop-code-should-use-uint16_t-for-nexthop-cou.patch FRRouting/frr@0bc79f5 0070-Allow-16-bit-size-for-nexthops.patch FRRouting/frr@9f8968f 0071-zebra-Only-notify-dplane-work-pthread-when-needed.patch FRRouting/frr#17062 0072-Fix-up-improper-handling-of-nexthops-for-nexthop-tra.patch FRRouting/frr#17076 0073-remove-in6addr-cmp.patch FRRouting/frr#17312 0074-bgp-best-port-reordering.patch FRRouting/frr#15572 0075-bgp-mp-info-changes.patch FRRouting/frr#16961 0076-Optimizations-and-problem-fixing-for-large-scale-ecmp-from-bgp.patch FRRouting/frr#17229 0077-frr-vtysh-dependencies-for-srv6-static-patches.patch FRRouting/frr@fd8edc3 0078-vtysh-de-conditionalize-and-reorder-install-node.patch FRRouting/frr@e26c580 0079-staticd-add-support-for-srv6.patch FRRouting/frr#16894 0081-bgpd-Optimize-evaluate-paths-for-a-peer-going-down.patch FRRouting/frr@9f55368 Realigned patches: Patch 0001-Reduce-severity-of-Vty-connected-from-message.patch 0002-Allow-BGP-attr-NEXT_HOP-to-be-0.0.0.0-due-to-allevia.patch 0003-nexthops-compare-vrf-only-if-ip-type.patch 0004-frr-remove-frr-log-outchannel-to-var-log-frr.log.patch 0005-Add-support-of-bgp-l3vni-evpn.patch 0006-Link-local-scope-was-not-set-while-binding-socket-for-bgp-ipv6-link-local-neighbors.patch 0007-ignore-route-from-default-table.patch 0008-Use-vrf_id-for-vrf-not-tabled_id.patch 0010-bgpd-Change-log-level-for-graceful-restart-events.patch 0021-Disable-ipv6-src-address-test-in-pceplib.patch 0022-cross-compile-changes.patch 0054-build-dplane-fpm-sonic-module.patch 0056-zebra-do-not-send-local-routes-to-fpm.patch 0057-Adding-changes-to-write-ip-nht-resolve-via-default-c.patch 0058-When-the-file-is-config-replayed-we-cannot-handle-th.patch 0061-Set-multipath-to-514-and-disable-bgp-vnc-for-optimiz.patch 0063-Patch-to-send-tag-value-associated-with-route-via-ne.patch 0080-SRv6-vpn-route-and-sidlist-install.patch 0082-Revert-bgpd-upon-if-event-evaluate-bnc-with-matching.patch 0083-staticd-add-cli-to-support-steering-of-ipv4-traffic-over-srv6-sid-list.patch 0084-lib-Return-duplicate-prefix-list-entry-test.patch 0085-This-error-happens-when-we-try-to-write-to-a-socket.patch Signed-off-by: Carmine Scarpitta <cscarpit@cisco.com>
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The fpm_nl_process function was getting the count
of the total number of ctx's processed. This leads to after having processed 1 context to always signal the dataplane that there is work to do. Change the code to only notify the dplane worker when a context was actually added to the outgoing context queue.