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freebsd-dev/sys/netinet6
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Steven Hartland 52e53e2de0 Fix lagg failover due to missing notifications 
When using lagg failover mode neither Gratuitous ARP (IPv4) or Unsolicited
Neighbour Advertisements (IPv6) are sent to notify other nodes that the
address may have moved.

This results is slow failover, dropped packets and network outages for the
lagg interface when the primary link goes down.

We now use the new if_link_state_change_cond with the force param set to
allow lagg to force through link state changes and hence fire a
ifnet_link_event which are now monitored by rip and nd6.

Upon receiving these events each protocol trigger the relevant
notifications:
* inet4 => Gratuitous ARP
* inet6 => Unsolicited Neighbour Announce

This also fixes the carp IPv6 NA's that stopped working after r251584 which
added the ipv6_route__llma route.

The new behavour can be controlled using the sysctls:
* net.link.ether.inet.arp_on_link
* net.inet6.icmp6.nd6_on_link

Also removed unused param from lagg_port_state and added descriptions for the
sysctls while here.

PR:		156226
MFC after:	1 month
Sponsored by:	Multiplay
Differential Revision:	https://reviews.freebsd.org/D4111
2015-12-15 16:02:11 +00:00
..
dest6.c The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare 2013-10-26 17:58:36 +00:00
frag6.c [netinet6]: Create a new IPv6 netisr which expects the frames to have been verified. 2015-11-06 23:07:43 +00:00
icmp6.c Make in_arpinput(), inp_lookup_mcast_ifp(), icmp_reflect(), 2015-12-09 11:14:27 +00:00
icmp6.h
in6_cksum.c Fix the checksum computation for UDPLite/IPv6. This requires the 2014-10-02 10:32:24 +00:00
in6_fib.c Make in_arpinput(), inp_lookup_mcast_ifp(), icmp_reflect(), 2015-12-09 11:14:27 +00:00
in6_fib.h Merge helper fib* functions used for basic lookups. 2015-12-08 10:50:03 +00:00
in6_gif.c Use correct lookup key for gif route lookups. 2015-12-09 22:09:33 +00:00
in6_ifattach.c Remove IN6_IFF_NOPFX. This flag was no longer used. 2015-09-10 06:08:42 +00:00
in6_ifattach.h Use FF02:0:0:0:0:2:FF00::/104 prefix for IPv6 Node Information Group 2013-05-04 19:16:26 +00:00
in6_mcast.c Make in_arpinput(), inp_lookup_mcast_ifp(), icmp_reflect(), 2015-12-09 11:14:27 +00:00
in6_pcb.c Decompose TCP INP_INFO lock to increase short-lived TCP connections scalability: 2015-08-03 12:13:54 +00:00
in6_pcb.h Make in6_pcblookup_hash_locked and in6_pcbladdr static. 2014-09-10 13:17:35 +00:00
in6_pcbgroup.c Refactor / restructure the RSS code into generic, IPv4 and IPv6 specific 2015-01-18 18:06:40 +00:00
in6_proto.c Renove faith(4) and faithd(8) from base. It looks like industry 2014-11-09 21:33:01 +00:00
in6_rmx.c Rename rt_foreach_fib() to rt_foreach_fib_walk(). 2015-08-10 20:50:31 +00:00
in6_rss.c [netinet6]: Create a new IPv6 netisr which expects the frames to have been verified. 2015-11-06 23:07:43 +00:00
in6_rss.h Implement RSS hashing/re-hashing for IPv6 ingress packets. 2015-08-29 07:14:29 +00:00
in6_src.c Make in_arpinput(), inp_lookup_mcast_ifp(), icmp_reflect(), 2015-12-09 11:14:27 +00:00
in6_var.h Fix lagg failover due to missing notifications 2015-12-15 16:02:11 +00:00
in6.c Fix lagg failover due to missing notifications 2015-12-15 16:02:11 +00:00
in6.h [netinet6]: Create a new IPv6 netisr which expects the frames to have been verified. 2015-11-06 23:07:43 +00:00
ip6_ecn.h
ip6_forward.c Bring back the ability of passing cached route via nd6_output_ifp(). 2015-11-15 16:02:22 +00:00
ip6_gre.c Extern declarations in C files loses compile-time checking that 2014-12-25 21:32:37 +00:00
ip6_id.c Provide includes that are needed in these files, and before were read 2013-10-26 18:18:50 +00:00
ip6_input.c Overhaul if_enc(4) and make it loadable in run-time. 2015-11-25 07:31:59 +00:00
ip6_ipsec.c Take extra reference to security policy before calling crypto_dispatch(). 2015-09-30 08:16:33 +00:00
ip6_ipsec.h Remove flag/flags argument from the following functions: 2014-12-11 18:35:34 +00:00
ip6_mroute.c Simplify ip[6] simploop: 2015-08-08 15:58:35 +00:00
ip6_mroute.h o Make net.inet6.ip6.mif6table return special API structure, that doesn't 2015-04-06 22:12:18 +00:00
ip6_output.c Bring back the ability of passing cached route via nd6_output_ifp(). 2015-11-15 16:02:22 +00:00
ip6_var.h [netinet6]: Create a new IPv6 netisr which expects the frames to have been verified. 2015-11-06 23:07:43 +00:00
ip6.h
ip6protosw.h Merge 'struct ip6protosw' and 'struct protosw' into one. Now we have 2014-08-08 01:57:15 +00:00
mld6_var.h - Rename 'struct mld_ifinfo' into 'struct mld_ifsoftc', since it really 2015-02-19 22:37:01 +00:00
mld6.c mld_v2_dispatch_general_query() is used by mld_fasttimo_vnet() to send 2015-12-01 11:17:41 +00:00
mld6.h
nd6_nbr.c Fix lagg failover due to missing notifications 2015-12-15 16:02:11 +00:00
nd6_rtr.c Add new rt_foreach_fib_walk_del() function for deleting route entries 2015-11-30 05:51:14 +00:00
nd6.c Fix lagg failover due to missing notifications 2015-12-15 16:02:11 +00:00
nd6.h Fix lagg failover due to missing notifications 2015-12-15 16:02:11 +00:00
pim6_var.h Remove more constants related to static sysctl nodes. The MAXID constants 2014-02-25 18:44:33 +00:00
pim6.h
raw_ip6.c Do not count security policy violation twice. 2014-12-11 19:20:13 +00:00
raw_ip6.h Migrate structs ip6stat, icmp6stat and rip6stat to PCPU counters. 2013-07-09 09:54:54 +00:00
route6.c The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare 2013-10-26 17:58:36 +00:00
scope6_var.h Merge helper fib* functions used for basic lookups. 2015-12-08 10:50:03 +00:00
scope6.c Merge helper fib* functions used for basic lookups. 2015-12-08 10:50:03 +00:00
sctp6_usrreq.c Fix the allocation of outgoing streams: 2015-12-06 16:17:57 +00:00
sctp6_var.h
send.c Free mbuf in case of error. 2013-12-17 10:53:17 +00:00
send.h
tcp6_var.h
udp6_usrreq.c Compare mbuf pointer to NULL rather than to 0. 2015-09-21 12:53:26 +00:00
udp6_var.h Add support for UDP-Lite protocol (RFC 3828) to IPv4 and IPv6 stacks. 2014-04-07 01:53:03 +00:00