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| int in6addr_cmp(const struct in6_addr *addr1, const struct in6_addr *addr2) |
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couldn't we just change the implementation of this so that it's not so ... awkward?
it seems nice to have the v6 address-specific signature, for instance.
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except of course we have IPV6_ADDR_CMP and a couple other places where we just use memcmp for v6 addresses in sockunion.c. I've just converted them over to use that version. All in all looks like a bunch of places could be fixed up.
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sure- it's not the use of memcmp() at the bottom level that I was asking about, it's about having a v6-specific signature that seems ... useful and helpful. Just a fan of apis that help folks use our data types in a natural sort of way.
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I don't see why IPV6_ADDR_CMP is not sufficient. the custom function was incredibly slow, when I removed it in a 256 peer X 100k routes I dropped from ~3:30 convergence to 2:30 convergence.
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I understand that the byte-by-byte implementation was not good - fine, let's do it better.
the macro is just a macro, so no type-checking of its arguments - I like the idea of a strongly-typed utility (that has a good implementation). but it's ok - if you and Donatas are ok with the macro, I'm not lying on the tracks
memcmp will return and act exactly the same as in6addr_cmp but it does it significantly faster than how in6addr_cmp does it. Let this be a lesson for implementing something that is a duplicate of what is provided by the c library. Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This function should just be memcmp. 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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#### 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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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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As a note, switching from from in6addr_cmp to memcmp significantly reduced cpu convergence time from ~3 minutes 30 seconds to 2 minutes 30 seconds with 100k x 256 ecmp in bgp