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659b52a845
mirror_frr/zebra
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Don Slice 659b52a845 zebra: send ipv4 singlepath delete messages to kernel without nexthop 
Problem reported was stale routes left in the kernel in certain cases
when overlapping static routes were used and links were bounced.  The
problem was determined to be an issue where the nexthop was changed
due to recursion as the link is going down, and the next-hop at the
time of deletion doesn't match what was previously installed by the
kernel.  This caused the kernel to reject the deletion and the route
stuck around.

It was pointed out that the kernel doesn't actually require a next-hop
value on the netlink deletion call.  In this fix, we are eliminating
the nexthop for RTM_DELROUTE messages to the kernel in the ipv4 singlepath
case.  This approach could also be valid for other cases but the fix
as is resolved the reported failure case.  More testing should be
performed before similar changes are made for other cases.

Testing included manual testing for the failure condition as well as
complete bgp-smoke and ospf-smoke tests with no new failures.

Ticket: CM-13328
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
Reviewed-by: CCR-5562
2017-01-30 13:40:53 -05:00
..
.gitignore [administrivia] Update gitignore files 2008-08-22 20:02:08 +01:00
client_main.c build: remove $Format tags 2016-12-20 17:54:03 +01:00
connected.c Quagga: Fix MPLS LSP scheduling to follow nexthop route update 2016-09-23 09:30:59 -04:00
connected.h Zebra: Remove reliance on NEXTHOP_TYPE_IPV4_ONLINK 2015-11-16 12:48:07 -08:00
debug.c *: Fix duplicate commands from view/enable node consolidation 2016-10-19 22:28:45 -04:00
debug.h Quagga: Static LSP configuration 2016-09-23 09:30:54 -04:00
GNOME-PRODUCT-ZEBRA-MIB Initial revision 2002-12-13 20:15:29 +00:00
GNOME-SMI Initial revision 2002-12-13 20:15:29 +00:00
if_ioctl_solaris.c zebra: Fix some warnings found during compile. 2016-10-07 21:05:05 -04:00
if_ioctl.c build: massively remove needless checks 2016-11-15 14:23:17 +09:00
if_netlink.c lib/zebra: put vrf_get() on a diet 2016-11-28 16:18:35 -02:00
if_netlink.h zebra: Refactor netlink interactions 2016-10-17 12:39:55 -07:00
if_null.c lib, zebra: Rework zebra_ns to be a bit more modular 2016-04-14 20:56:57 -04:00
if_sysctl.c *: split & distribute memtypes and stop (re|ab)using lib/ MTYPEs 2016-09-19 16:31:04 -04:00
interface.c Merge branch '-renato' into stable/2.0 2016-12-05 16:23:28 +01:00
interface.h lib, zebra: unify link layer type and hardware address handling 2016-09-03 11:05:50 -04:00
ioctl_null.c Add missing GPL headers, and copyright claims that certainly apply. 2016-05-26 01:06:59 +00:00
ioctl_solaris.c zebra: Fix some warnings found during compile. 2016-10-07 21:05:05 -04:00
ioctl_solaris.h build/solaris: create ioctl_solaris.h 2016-06-09 10:51:59 -04:00
ioctl.c *: fix more initialisers (for BSD) 2016-06-08 15:01:33 -04:00
ioctl.h [zebra/solaris] Interface state fixups for Solaris. 2006-01-25 04:31:40 +00:00
ipforward_proc.c zebra: fix warnings in forward proc 2011-12-07 01:24:09 +04:00
ipforward_solaris.c 2005-06-28 Paul Jakma <paul.jakma@sun.com> 2005-06-28 17:17:12 +00:00
ipforward_sysctl.c build: remove INRIA, NRL and MUSICA IPv6 quirks 2016-06-03 14:40:03 -04:00
ipforward.h 2005-06-28 Paul Jakma <paul.jakma@sun.com> 2005-06-28 17:17:12 +00:00
irdp_interface.c zebra: use qobj and enable concurrent config edits 2016-10-07 09:09:52 -04:00
irdp_main.c lib: convert vrf code to use red-black trees as well 2016-11-28 16:18:35 -02:00
irdp_packet.c *: create a helper function to set the IP_MULTICAST_LOOP sockoption 2016-11-25 11:46:06 -02:00
irdp.h zebra: deal with irdp compile warnings 2009-12-10 14:22:44 +03:00
kernel_netlink.c *: Add source of route as protocol string in ip route pushed into kernel 2017-01-30 13:40:53 -05:00
kernel_netlink.h zebra: use unsigned args for *addattr 2016-10-18 08:39:21 -04:00
kernel_null.c zebra: kernel interface simplification 2016-10-18 08:36:21 -04:00
kernel_socket.c lib: replace strlcpy & strlcat with glibc versions 2016-11-15 17:35:36 +09:00
kernel_socket.h mpls: add support to the OpenBSD kernel 2016-09-23 09:31:15 -04:00
main.c zebra: Add vty_socket cli option to override the compiled-in location for the VTY Socket 2017-01-26 00:41:09 +07:00
Makefile.am zebra: Fix dist so that zebra includes right .h 2016-10-15 23:49:06 -04:00
misc_null.c zebra: clean up misc_null pragmas 2016-06-07 09:43:32 -04:00
redistribute_null.c Update Traffic Engineering Support for OSPFD 2016-09-03 11:05:50 -04:00
redistribute.c zebra/lib: remove redundant fields from zebra_vrf 2016-11-28 16:18:35 -02:00
redistribute.h Update Traffic Engineering Support for OSPFD 2016-09-03 11:05:50 -04:00
rib.h zebra: remove unused variable 2016-12-23 13:27:55 +07:00
router-id.c zebra/lib: remove redundant fields from zebra_vrf 2016-11-28 16:18:35 -02:00
router-id.h zebra: maintain the router-id per VRF 2015-10-30 00:19:15 -07:00
rt_netlink.c zebra: send ipv4 singlepath delete messages to kernel without nexthop 2017-01-30 13:40:53 -05:00
rt_netlink.h *: Add source of route as protocol string in ip route pushed into kernel 2017-01-30 13:40:53 -05:00
rt_socket.c lib: replace strlcpy & strlcat with glibc versions 2016-11-15 17:35:36 +09:00
rt.h zebra: kernel interface simplification 2016-10-18 08:36:21 -04:00
rtadv_null.c BGP: Trigger IPv6 router advertisements upon config of unnumbered neighbor 2016-05-02 13:53:38 -07:00
rtadv.c zebra/lib: remove redundant fields from zebra_vrf 2016-11-28 16:18:35 -02:00
rtadv.h zebra: fix build with rtadv disabled 2016-06-08 14:15:47 -04:00
rtread_getmsg.c zebra: Fix some warnings found during compile. 2016-10-07 21:05:05 -04:00
rtread_netlink.c lib, zebra: The Bulk of the conversion over to NS and VRF 2016-02-01 10:55:42 -08:00
rtread_sysctl.c *: split & distribute memtypes and stop (re|ab)using lib/ MTYPEs 2016-09-19 16:31:04 -04:00
test_main.c build: rename (1 of ?): configure.ac + preproc 2016-12-20 17:57:47 +01:00
testrib.conf zebra: Build the test client, can be useful, and add IPv6 to testrib.conf 2016-05-26 01:13:58 +00:00
zebra_fpm_dt.c zebra: add developer test functions for FPM code 2016-09-23 12:12:17 -04:00
zebra_fpm_netlink.c zebra/lib: remove redundant fields from zebra_vrf 2016-11-28 16:18:35 -02:00
zebra_fpm_private.h zebra: optionally use protobuf with FPM 2016-09-23 12:12:16 -04:00
zebra_fpm_protobuf.c fpm/protobuf: fix compile errors & warnings 2016-09-23 12:12:17 -04:00
zebra_fpm.c zebra/lib: remove redundant fields from zebra_vrf 2016-11-28 16:18:35 -02:00
zebra_fpm.h zebra: optionally use protobuf with FPM 2016-09-23 12:12:16 -04:00
zebra_memory.c *: split & distribute memtypes and stop (re|ab)using lib/ MTYPEs 2016-09-19 16:31:04 -04:00
zebra_memory.h zebra/lib: plug several memleaks 2016-11-28 16:15:27 -02:00
zebra_mpls_netlink.c *: fix some licensing SNAFUs 2016-11-14 11:27:08 +09:00
zebra_mpls_null.c zebra: add missing license headers to two files 2016-11-28 17:34:54 +01:00
zebra_mpls_openbsd.c zebra: add missing license headers to two files 2016-11-28 17:34:54 +01:00
zebra_mpls_vty.c zebra: Disable mpls slightly different 2016-10-25 14:30:25 -04:00
zebra_mpls.c Merge branch '-renato' into stable/2.0 2016-12-05 16:23:28 +01:00
zebra_mpls.h zebra: check at startup if the kernel supports MPLS 2016-09-23 09:31:25 -04:00
zebra_ns.c zebra/lib: move some code around 2016-11-28 16:18:35 -02:00
zebra_ns.h zebra/lib: plug several memleaks 2016-11-28 16:15:27 -02:00
zebra_ptm_null.c Zebra and bgpd: VRF support for BFD 2016-03-08 05:10:56 -08:00
zebra_ptm_redistribute.c *: split & distribute memtypes and stop (re|ab)using lib/ MTYPEs 2016-09-19 16:31:04 -04:00
zebra_ptm_redistribute.h Zebra and bgpd: VRF support for BFD 2016-03-08 05:10:56 -08:00
zebra_ptm.c bgpd, zebra: Fix for ignored non-default VRF single-hop BFD status messages in Quagga 2017-01-30 13:40:21 -05:00
zebra_ptm.h bfd: Fix for missing BFD client regs/deregs from quagga clients 2016-06-21 03:39:58 -07:00
zebra_rib.c zebra: remove unused variable 2016-12-23 13:27:55 +07:00
zebra_rnh_null.c zebra: plug more memory leaks 2016-11-28 16:18:35 -02:00
zebra_rnh.c Merge branch '-renato' into stable/2.0 2016-12-05 16:23:28 +01:00
zebra_rnh.h zebra: plug more memory leaks 2016-11-28 16:18:35 -02:00
zebra_routemap.c build: rename (2 of ?): route_types macros 2016-12-20 18:34:29 +01:00
zebra_routemap.h *: Consistently support 32-bit route tags 2016-10-07 21:05:05 -04:00
zebra_snmp.c zebra: fix sign warning in SNMP code 2016-11-15 14:06:13 +09:00
zebra_static.c zebra: fix FIB route updates on *BSD 2016-12-23 13:27:03 +07:00
zebra_static.h Merge remote-tracking branch 'origin/cmaster' into cmaster-next 2016-10-21 16:05:03 -04:00
zebra_vrf.c zebra: plug more memory leaks 2016-11-28 16:18:35 -02:00
zebra_vrf.h zebra: plug more memory leaks 2016-11-28 16:18:35 -02:00
zebra_vty.c zebra: Allow tag values greater than 2 billion on arm 2017-01-06 12:37:44 -05:00
zebra.conf.sample Initial revision 2002-12-13 20:15:29 +00:00
zserv_null.c zebra: Refactor zebra_vrf 2016-04-14 20:57:04 -04:00
zserv.c zebra/lib: remove redundant fields from zebra_vrf 2016-11-28 16:18:35 -02:00
zserv.h zebra: check at startup if the kernel supports MPLS 2016-09-23 09:31:25 -04:00