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bgpd: backpressure - fix to properly remove dest for bgp under deletion #16368

Merged
merged 2 commits into from
Jul 16, 2024
Merged

bgpd: backpressure - fix to properly remove dest for bgp under deletion #16368

merged 2 commits into from
Jul 16, 2024
+26 −13

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raja-rajasekar
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Author: Rajasekar Raja rajasekarr@nvidia.com
Date: Wed Jul 10 20:17:14 2024 -0700

bgpd: backpressure - Improve debuggability

Improve debuggability in backpressure code.

Ticket :#3980988

Signed-off-by: Rajasekar Raja <rajasekarr@nvidia.com>

Author: Rajasekar Raja rajasekarr@nvidia.com
Date: Wed Jul 10 16:46:29 2024 -0700

bgpd: backpressure - fix to properly remove dest for bgp under deletion

In case of imported routes (L3vni/vrf leaks), when a bgp instance is
being deleted, the peer->bgp comparision with the incoming bgp to remove
the dest from the pending fifo is wrong. This can lead to the fifo
having stale entries resulting in crash.

Two changes are done here.
 - Instead of pop/push items in list if the struct bgp doesnt match,
   simply iterate the list and remove the expected ones.

 - Corrected the way bgp is fetched from dest rather than relying on
   path_info->peer so that it works for all kinds of routes.

Ticket :#3980988

Signed-off-by: Chirag Shah <chirag @nvidia.com>
Signed-off-by: Rajasekar Raja <rajasekarr@nvidia.com>

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@Mergifyio backport dev/10.1

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backport dev/10.1

✅ Backports have been created

@ton31337 ton31337 added this to the 10.1 milestone Jul 12, 2024
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ci:rerun

@raja-rajasekar
bgpd: backpressure - fix to properly remove dest for bgp under deletion
4395fcd 
In case of imported routes (L3vni/vrf leaks), when a bgp instance is
being deleted, the peer->bgp comparision with the incoming bgp to remove
the dest from the pending fifo is wrong. This can lead to the fifo
having stale entries resulting in crash.

Two changes are done here.
 - Instead of pop/push items in list if the struct bgp doesnt match,
   simply iterate the list and remove the expected ones.

 - Corrected the way bgp is fetched from dest rather than relying on
   path_info->peer so that it works for all kinds of routes.

Ticket :#3980988

Signed-off-by: Chirag Shah <chirag @nvidia.com>
Signed-off-by: Rajasekar Raja <rajasekarr@nvidia.com>
@raja-rajasekar
bgpd: backpressure - Improve debuggability
186db96 
Improve debuggability in backpressure code.

Ticket :#3980988

Signed-off-by: Rajasekar Raja <rajasekarr@nvidia.com>
@github-actions github-actions bot added size/M and removed size/S labels Jul 15, 2024
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ci:rerun

riw777
riw777 approved these changes Jul 16, 2024
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looks good

@riw777 riw777 merged commit 85b5067 into FRRouting:master Jul 16, 2024
11 checks passed
ton31337 added a commit that referenced this pull request Jul 17, 2024
@ton31337
Merge pull request #16404 from FRRouting/mergify/bp/dev/10.1/pr-16368
2a06d1c 
bgpd: backpressure - fix to properly remove dest for bgp under deletion (backport #16368)
This was referenced Jul 25, 2024
Closed
Merged
lguohan pushed a commit to sonic-net/sonic-buildimage that referenced this pull request Aug 6, 2024
@dgsudharsan
[FRR] Zebra BGP enhancements to better handle memory during route chu…
c0e5b8e 
…rns (#19717)

Added the below patches which are part of BGP Zebra back pressure feature required to keep the memory usage in check during route churns

How I did it
New patches that were added:

Patch	FRR Pull request
0030-zebra-backpressure-Zebra-push-back-on-Buffer-Stream-.patch	FRRouting/frr#15411
0031-bgpd-backpressure-Add-a-typesafe-list-for-Zebra-Anno.patch	FRRouting/frr#15524
0032-bgpd-fix-flushing-ipv6-flowspec-entries-when-peering.patch	FRRouting/frr#15326
0033-bgpd-backpressure-cleanup-bgp_zebra_XX-func-args.patch	FRRouting/frr#15524
0034-gpd-backpressure-Handle-BGP-Zebra-Install-evt-Creat.patch	FRRouting/frr#15524
0035-bgpd-backpressure-Handle-BGP-Zebra-EPVN-Install-evt-.patch	FRRouting/frr#15624
0036-zebra-backpressure-Fix-Null-ptr-access-Coverity-Issu.patch	FRRouting/frr#15728
0037-bgpd-Increase-install-uninstall-speed-of-evpn-vpn-vn.patch	FRRouting/frr#15727
0038-zebra-Actually-display-I-O-buffer-sizes.patch	FRRouting/frr#15708
0039-zebra-Actually-display-I-O-buffer-sizes-part-2.patch	FRRouting/frr#15769
0040-bgpd-backpressure-Fix-to-withdraw-evpn-type-5-routes.patch	FRRouting/frr#16034
0041-bgpd-backpressure-Fix-to-avoid-CPU-hog.patch	FRRouting/frr#16035
0042-zebra-Use-built-in-data-structure-counter.patch	FRRouting/frr#16221
0043-zebra-Use-the-ctx-queue-counters.patch	FRRouting/frr#16220
0044-zebra-Modify-dplane-loop-to-allow-backpressure-to-fi.patch	FRRouting/frr#16220
0045-zebra-Limit-queue-depth-in-dplane_fpm_nl.patch	FRRouting/frr#16220
0046-zebra-Modify-show-zebra-dplane-providers-to-give-mor.patch	FRRouting/frr#16220
0047-bgpd-backpressure-fix-evpn-route-sync-to-zebra.patch	FRRouting/frr#16234
0048-bgpd-backpressure-fix-to-properly-remove-dest-for-bg.patch	FRRouting/frr#16368
0049-bgpd-backpressure-Improve-debuggability.patch	FRRouting/frr#16368
0050-bgpd-backpressure-Avoid-use-after-free.patch	FRRouting/frr#16437
0051-bgpd-backpressure-fix-ret-value-evpn_route_select_in.patch	FRRouting/frr#16416
0052-bgpd-backpressure-log-error-for-evpn-when-route-inst.patch	FRRouting/frr#16416
matiAlfaro pushed a commit to Marvell-switching/sonic-buildimage that referenced this pull request Aug 6, 2024
@dgsudharsan @matiAlfaro
[FRR] Zebra BGP enhancements to better handle memory during route chu…
38aa337 
…rns (sonic-net#19717)

Added the below patches which are part of BGP Zebra back pressure feature required to keep the memory usage in check during route churns

How I did it
New patches that were added:

Patch	FRR Pull request
0030-zebra-backpressure-Zebra-push-back-on-Buffer-Stream-.patch	FRRouting/frr#15411
0031-bgpd-backpressure-Add-a-typesafe-list-for-Zebra-Anno.patch	FRRouting/frr#15524
0032-bgpd-fix-flushing-ipv6-flowspec-entries-when-peering.patch	FRRouting/frr#15326
0033-bgpd-backpressure-cleanup-bgp_zebra_XX-func-args.patch	FRRouting/frr#15524
0034-gpd-backpressure-Handle-BGP-Zebra-Install-evt-Creat.patch	FRRouting/frr#15524
0035-bgpd-backpressure-Handle-BGP-Zebra-EPVN-Install-evt-.patch	FRRouting/frr#15624
0036-zebra-backpressure-Fix-Null-ptr-access-Coverity-Issu.patch	FRRouting/frr#15728
0037-bgpd-Increase-install-uninstall-speed-of-evpn-vpn-vn.patch	FRRouting/frr#15727
0038-zebra-Actually-display-I-O-buffer-sizes.patch	FRRouting/frr#15708
0039-zebra-Actually-display-I-O-buffer-sizes-part-2.patch	FRRouting/frr#15769
0040-bgpd-backpressure-Fix-to-withdraw-evpn-type-5-routes.patch	FRRouting/frr#16034
0041-bgpd-backpressure-Fix-to-avoid-CPU-hog.patch	FRRouting/frr#16035
0042-zebra-Use-built-in-data-structure-counter.patch	FRRouting/frr#16221
0043-zebra-Use-the-ctx-queue-counters.patch	FRRouting/frr#16220
0044-zebra-Modify-dplane-loop-to-allow-backpressure-to-fi.patch	FRRouting/frr#16220
0045-zebra-Limit-queue-depth-in-dplane_fpm_nl.patch	FRRouting/frr#16220
0046-zebra-Modify-show-zebra-dplane-providers-to-give-mor.patch	FRRouting/frr#16220
0047-bgpd-backpressure-fix-evpn-route-sync-to-zebra.patch	FRRouting/frr#16234
0048-bgpd-backpressure-fix-to-properly-remove-dest-for-bg.patch	FRRouting/frr#16368
0049-bgpd-backpressure-Improve-debuggability.patch	FRRouting/frr#16368
0050-bgpd-backpressure-Avoid-use-after-free.patch	FRRouting/frr#16437
0051-bgpd-backpressure-fix-ret-value-evpn_route_select_in.patch	FRRouting/frr#16416
0052-bgpd-backpressure-log-error-for-evpn-when-route-inst.patch	FRRouting/frr#16416
mssonicbld pushed a commit to mssonicbld/sonic-buildimage that referenced this pull request Oct 22, 2024
@dgsudharsan @mssonicbld
[FRR] Zebra BGP enhancements to better handle memory during route chu…
466a073 
…rns (sonic-net#19717)

Added the below patches which are part of BGP Zebra back pressure feature required to keep the memory usage in check during route churns

How I did it
New patches that were added:

Patch	FRR Pull request
0030-zebra-backpressure-Zebra-push-back-on-Buffer-Stream-.patch	FRRouting/frr#15411
0031-bgpd-backpressure-Add-a-typesafe-list-for-Zebra-Anno.patch	FRRouting/frr#15524
0032-bgpd-fix-flushing-ipv6-flowspec-entries-when-peering.patch	FRRouting/frr#15326
0033-bgpd-backpressure-cleanup-bgp_zebra_XX-func-args.patch	FRRouting/frr#15524
0034-gpd-backpressure-Handle-BGP-Zebra-Install-evt-Creat.patch	FRRouting/frr#15524
0035-bgpd-backpressure-Handle-BGP-Zebra-EPVN-Install-evt-.patch	FRRouting/frr#15624
0036-zebra-backpressure-Fix-Null-ptr-access-Coverity-Issu.patch	FRRouting/frr#15728
0037-bgpd-Increase-install-uninstall-speed-of-evpn-vpn-vn.patch	FRRouting/frr#15727
0038-zebra-Actually-display-I-O-buffer-sizes.patch	FRRouting/frr#15708
0039-zebra-Actually-display-I-O-buffer-sizes-part-2.patch	FRRouting/frr#15769
0040-bgpd-backpressure-Fix-to-withdraw-evpn-type-5-routes.patch	FRRouting/frr#16034
0041-bgpd-backpressure-Fix-to-avoid-CPU-hog.patch	FRRouting/frr#16035
0042-zebra-Use-built-in-data-structure-counter.patch	FRRouting/frr#16221
0043-zebra-Use-the-ctx-queue-counters.patch	FRRouting/frr#16220
0044-zebra-Modify-dplane-loop-to-allow-backpressure-to-fi.patch	FRRouting/frr#16220
0045-zebra-Limit-queue-depth-in-dplane_fpm_nl.patch	FRRouting/frr#16220
0046-zebra-Modify-show-zebra-dplane-providers-to-give-mor.patch	FRRouting/frr#16220
0047-bgpd-backpressure-fix-evpn-route-sync-to-zebra.patch	FRRouting/frr#16234
0048-bgpd-backpressure-fix-to-properly-remove-dest-for-bg.patch	FRRouting/frr#16368
0049-bgpd-backpressure-Improve-debuggability.patch	FRRouting/frr#16368
0050-bgpd-backpressure-Avoid-use-after-free.patch	FRRouting/frr#16437
0051-bgpd-backpressure-fix-ret-value-evpn_route_select_in.patch	FRRouting/frr#16416
0052-bgpd-backpressure-log-error-for-evpn-when-route-inst.patch	FRRouting/frr#16416
@mssonicbld mssonicbld mentioned this pull request Oct 22, 2024
Merged
mssonicbld pushed a commit to sonic-net/sonic-buildimage that referenced this pull request Oct 23, 2024
@dgsudharsan @mssonicbld
[FRR] Zebra BGP enhancements to better handle memory during route chu…
bf0d9fa 
…rns (#19717)

Added the below patches which are part of BGP Zebra back pressure feature required to keep the memory usage in check during route churns

How I did it
New patches that were added:

Patch	FRR Pull request
0030-zebra-backpressure-Zebra-push-back-on-Buffer-Stream-.patch	FRRouting/frr#15411
0031-bgpd-backpressure-Add-a-typesafe-list-for-Zebra-Anno.patch	FRRouting/frr#15524
0032-bgpd-fix-flushing-ipv6-flowspec-entries-when-peering.patch	FRRouting/frr#15326
0033-bgpd-backpressure-cleanup-bgp_zebra_XX-func-args.patch	FRRouting/frr#15524
0034-gpd-backpressure-Handle-BGP-Zebra-Install-evt-Creat.patch	FRRouting/frr#15524
0035-bgpd-backpressure-Handle-BGP-Zebra-EPVN-Install-evt-.patch	FRRouting/frr#15624
0036-zebra-backpressure-Fix-Null-ptr-access-Coverity-Issu.patch	FRRouting/frr#15728
0037-bgpd-Increase-install-uninstall-speed-of-evpn-vpn-vn.patch	FRRouting/frr#15727
0038-zebra-Actually-display-I-O-buffer-sizes.patch	FRRouting/frr#15708
0039-zebra-Actually-display-I-O-buffer-sizes-part-2.patch	FRRouting/frr#15769
0040-bgpd-backpressure-Fix-to-withdraw-evpn-type-5-routes.patch	FRRouting/frr#16034
0041-bgpd-backpressure-Fix-to-avoid-CPU-hog.patch	FRRouting/frr#16035
0042-zebra-Use-built-in-data-structure-counter.patch	FRRouting/frr#16221
0043-zebra-Use-the-ctx-queue-counters.patch	FRRouting/frr#16220
0044-zebra-Modify-dplane-loop-to-allow-backpressure-to-fi.patch	FRRouting/frr#16220
0045-zebra-Limit-queue-depth-in-dplane_fpm_nl.patch	FRRouting/frr#16220
0046-zebra-Modify-show-zebra-dplane-providers-to-give-mor.patch	FRRouting/frr#16220
0047-bgpd-backpressure-fix-evpn-route-sync-to-zebra.patch	FRRouting/frr#16234
0048-bgpd-backpressure-fix-to-properly-remove-dest-for-bg.patch	FRRouting/frr#16368
0049-bgpd-backpressure-Improve-debuggability.patch	FRRouting/frr#16368
0050-bgpd-backpressure-Avoid-use-after-free.patch	FRRouting/frr#16437
0051-bgpd-backpressure-fix-ret-value-evpn_route_select_in.patch	FRRouting/frr#16416
0052-bgpd-backpressure-log-error-for-evpn-when-route-inst.patch	FRRouting/frr#16416
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@raja-rajasekar @ton31337 @riw777