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freebsd-dev/sys/netinet6
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Alexander V. Chernikov b1d63265ac Flush remaining routes from the routing table during VNET shutdown. 
Summary:
This fixes rtentry leak for the cloned interfaces created inside the
 VNET.

PR:	253998
Reported by:	rashey at superbox.pl
MFC after:	3 days

Loopback teardown order is `SI_SUB_INIT_IF`, which happens after `SI_SUB_PROTO_DOMAIN` (route table teardown).
Thus, any route table operations are too late to schedule.
As the intent of the vnet teardown procedures to minimise the amount of effort by doing global cleanups instead of per-interface ones, address this by adding a relatively light-weight routing table cleanup function, `rib_flush_routes()`.
It removes all remaining routes from the routing table and schedules the deletion, which will happen later, when `rtables_destroy()` waits for the current epoch to finish.

Test Plan:
```
set_skip:set_skip_group_lo  ->  passed  [0.053s]
tail -n 200 /var/log/messages | grep rtentry
```

Reviewers: #network, kp, bz

Reviewed By: kp

Subscribers: imp, ae

Differential Revision: https://reviews.freebsd.org/D29116
2021-03-10 21:10:14 +00:00
..
dest6.c Fix m_pullup() problem after removing PULLDOWN_TESTs and KAME EXT_*macros. 2019-12-01 00:22:04 +00:00
frag6.c net: Introduce IPV6_DSCP(), IPV6_ECN() and IPV6_TRAFFIC_CLASS() macros 2021-03-04 20:56:48 +01:00
icmp6.c Remove per-packet ifa refcounting from IPv6 fast path. 2021-02-15 22:33:12 +00:00
icmp6.h
in6_cksum.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
in6_fib_algo.c Fix dpdk/ldradix fib lookup algorithm preference calculation. 2021-03-07 22:17:53 +00:00
in6_fib.c Fix unused-function waring when compiling with FIB_ALGO. 2021-01-30 23:25:56 +00:00
in6_fib.h Add modular fib lookup framework. 2020-12-25 11:33:17 +00:00
in6_gif.c net: Introduce IPV6_DSCP(), IPV6_ECN() and IPV6_TRAFFIC_CLASS() macros 2021-03-04 20:56:48 +01:00
in6_ifattach.c Remove per-packet ifa refcounting from IPv6 fast path. 2021-02-15 22:33:12 +00:00
in6_ifattach.h
in6_jail.c
in6_mcast.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
in6_pcb.c Enforce net epoch in in6_selectsrc(). 2021-02-15 22:33:12 +00:00
in6_pcb.h Filter TCP connections to SO_REUSEPORT_LB listen sockets by NUMA domain 2020-12-19 22:04:46 +00:00
in6_pcbgroup.c
in6_proto.c Remove unused nhop_ref_any() function. 2020-09-20 21:32:52 +00:00
in6_rmx.c Introduce scalable route multipath. 2020-10-03 10:47:17 +00:00
in6_rss.c Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in6_rss.h Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in6_src.c Remove per-packet ifa refcounting from IPv6 fast path. 2021-02-15 22:33:12 +00:00
in6_var.h Remove per-packet ifa refcounting from IPv6 fast path. 2021-02-15 22:33:12 +00:00
in6.c Fix 'in6_purgeaddr: err=65, destination address delete failed' message. 2021-03-08 21:28:35 +00:00
in6.h Expose nonstandard IPv6 kernel definitions to standalone builds. 2020-12-04 21:51:47 +00:00
ip6_ecn.h
ip6_fastfwd.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip6_forward.c ipv6: quit dropping packets looping back on p2p interfaces 2020-08-31 01:45:48 +00:00
ip6_gre.c Introduce NET_EPOCH_CALL() macro and use it everywhere where we free 2020-01-15 06:05:20 +00:00
ip6_id.c ip6_randomflowlabel: Avoid blocking if random(4) is not available 2019-04-23 17:18:20 +00:00
ip6_input.c Flush remaining routes from the routing table during VNET shutdown. 2021-03-10 21:10:14 +00:00
ip6_mroute.c Revert "SO_RERROR indicates that receive buffer overflows should be handled as errors." 2021-02-08 22:32:32 +00:00
ip6_mroute.h
ip6_output.c net: Introduce IPV6_DSCP(), IPV6_ECN() and IPV6_TRAFFIC_CLASS() macros 2021-03-04 20:56:48 +01:00
ip6_var.h Convert route caching to nexthop caching. 2020-04-25 09:06:11 +00:00
ip6.h
ip6protosw.h
ip_fw_nat64.h Reapply r345274 with build fixes for 32-bit architectures. 2019-03-19 10:57:03 +00:00
ip_fw_nptv6.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
mld6_var.h icmpv6: Fix mbuf change in mld 2019-11-18 21:59:47 +00:00
mld6.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
mld6.h
nd6_nbr.c Enforce net epoch in in6_selectsrc(). 2021-02-15 22:33:12 +00:00
nd6_rtr.c Fix crash with rtadv-originated multipath IPv6 routes. 2021-02-24 16:44:10 +00:00
nd6.c arp/nd: Cope with late calls to iflladdr_event 2021-02-23 13:54:07 +01:00
nd6.h Switch inet6 default route subscription to the new rib subscription api. 2020-07-12 11:24:23 +00:00
pim6_var.h
pim6.h
raw_ip6.c Enforce net epoch in in6_selectsrc(). 2021-02-15 22:33:12 +00:00
raw_ip6.h
route6.c Fix m_pullup() problem after removing PULLDOWN_TESTs and KAME EXT_*macros. 2019-12-01 00:22:04 +00:00
scope6_var.h Make net.inet6.ip6.deembed_scopeid behaviour default & remove sysctl. 2020-08-15 11:37:44 +00:00
scope6.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp6_usrreq.c net: Introduce IPV6_DSCP(), IPV6_ECN() and IPV6_TRAFFIC_CLASS() macros 2021-03-04 20:56:48 +01:00
sctp6_var.h
send.c Remove per-packet ifa refcounting from IPv6 fast path. 2021-02-15 22:33:12 +00:00
send.h
tcp6_var.h Remove tcp_rtlookup6() function signature. 2020-04-13 08:26:11 +00:00
udp6_usrreq.c [udp6] fix possible panic due to lack of locking. 2021-02-11 12:00:25 +03:00
udp6_var.h