bgpd: Extend BGP to communicate with the SRv6 SID Manager to allocate/release SRv6 SIDs#15676
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@riw777 Many thanks for the review. I rebased the PR based on the merged SID manager. Can you please take a look again? |
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I'm kindof waiting on #15679 to pass before pushing this ... |
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ci:retry CI failure is not related, rerunning |
Add an API to request information from the SRv6 SID Manager (zebra) regarding a specific SRv6 locator. Signed-off-by: Carmine Scarpitta <[email protected]>
Currently, when SRv6 is enabled in BGP, BGP requests a locator chunk from Zebra. Zebra assigns a locator chunk to BGP, and then BGP can allocate SIDs from the locator chunk. Recently, the implementation of SRv6 in Zebra has been improved, and a new API has been introduced for obtaining/releasing the SIDs. Now, the daemons no longer need to request a chunk. Instead, the daemons interact with Zebra to obtain information about the locator and subsequently to allocate/release the SIDs. This commit extends BGP to use the new SRv6 API. In particular, it removes the chunk throughout the BGP code and modifies BGP to request/save/advertise the locator instead of the chunk. Signed-off-by: Carmine Scarpitta <[email protected]>
This commit extends BGP to process locator information received from SRv6 Manager (zebra) and save the locator info in the SRv6 database. Signed-off-by: Carmine Scarpitta <[email protected]>
Add an API to get/release SRv6 SIDs through the SRv6 SID Manager. Signed-off-by: Carmine Scarpitta <[email protected]>
When SRv6 VPN is unconfigured in BGP, BGP needs to interact with SID Manager to release the SID and make it available to other daemons Signed-off-by: Carmine Scarpitta <[email protected]>
Currently, BGP allocates SIDs without interacting with Zebra. Recently, the SRv6 implementation has been improved. Now, the daemons need to interact with Zebra through ZAPI to obtain and release SIDs. This commit extends BGP to request SIDs from Zebra instead of allocating the SIDs on its own. Signed-off-by: Carmine Scarpitta <[email protected]>
Make the `sid_register()` function non-static to allow other BGP modules (e.g. bgp_zebra.c) to register SIDs. Signed-off-by: Carmine Scarpitta <[email protected]>
Zebra sends a `SRV6_SID_NOTIFY` notification to inform clients about the result of a SID alloc/release operation. This commit adds a handler to process a `SRV6_SID_NOTIFY` notification received from zebra. If the notification indicates that a SID allocation operation was successful, then it stores the allocated SID in the SRv6 database, installs the SID into the RIB, and advertises the SID to the other BGP routers. If the notification indicates that an operation has failed, it logs the error. Signed-off-by: Carmine Scarpitta <[email protected]>
Remove unused SRv6 code. Signed-off-by: Carmine Scarpitta <[email protected]>
In the near future, some daemons may only register SIDs. This may be the case for the pathd daemon when creating SRv6 binding SIDs. When a locator is getting deleted at ZEBRA level, the daemon may have an easy way to find out the SIds to unregister to. This commit proposes to add the locator name to the SID_SRV6_NOTIFY message whenever possible. Only case when an allocation failure happens, the locator will not be present. In all other places, the notify API at procol levels has the locator name extra-parameter. Signed-off-by: Philippe Guibert <[email protected]> Signed-off-by: Carmine Scarpitta <[email protected]>
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This commit brings PR FRRouting/frr#15676 from FRR mainline to SONiC bgpd: Extend BGP to communicate with the SRv6 SID Manager to allocate/release SRv6 SIDs FRRouting/frr#15676 Signed-off-by: cscarpitta <[email protected]>
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#### Why I did it Bring the below PRs from FRR mainline to SONiC in order to support SRv6 SID Manager in SONiC. #### New patches that were added | Patch | FRR Pull Request | | ------------- | ----------------- | | 0064-SRv6-BGP-SID-reachability.patch | FRRouting/frr#14810 | | 0065-zebra-display-srv6-encapsulation-source-address-when-configured.patch | FRRouting/frr#16151 | | 0066-lib-fix-srv6-locator-flags-propagated-to-isis.patch | FRRouting/frr#15673 | | 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 |
VladimirKuk
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This commit brings PR FRRouting/frr#15676 from FRR mainline to SONiC bgpd: Extend BGP to communicate with the SRv6 SID Manager to allocate/release SRv6 SIDs FRRouting/frr#15676 Signed-off-by: cscarpitta <[email protected]>
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 <[email protected]>
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PR #15604 introduces the SRv6 SID Manager, a zebra component responsible for SID allocation/management. The SRv6 SID Manager exposes a SID allocation/release APIs, allowing clients to request and release an SRv6 SID.
This PR extends the BGP daemon to communicate with the SRv6 SID Manager to allocate/release SRv6 SIDs.