freebsd-nq/sys/netinet6
Alexander V. Chernikov 983066f05b Convert route caching to nexthop caching.
This change is build on top of nexthop objects introduced in r359823.

Nexthops are separate datastructures, containing all necessary information
 to perform packet forwarding such as gateway interface and mtu. Nexthops
 are shared among the routes, providing more pre-computed cache-efficient
 data while requiring less memory. Splitting the LPM code and the attached
 data solves multiple long-standing problems in the routing layer,
 drastically reduces the coupling with outher parts of the stack and allows
 to transparently introduce faster lookup algorithms.

Route caching was (re)introduced to minimise (slow) routing lookups, allowing
 for notably better performance for large TCP senders. Caching works by
 acquiring rtentry reference, which is protected by per-rtentry mutex.
 If the routing table is changed (checked by comparing the rtable generation id)
 or link goes down, cache record gets withdrawn.

Nexthops have the same reference counting interface, backed by refcount(9).
This change merely replaces rtentry with the actual forwarding nextop as a
 cached object, which is mostly mechanical. Other moving parts like cache
 cleanup on rtable change remains the same.

Differential Revision:	https://reviews.freebsd.org/D24340
2020-04-25 09:06:11 +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 Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
icmp6.c Convert IP/IPv6 forwarding, ICMP processing and IP PCB laddr selection to 2020-04-14 23:06:25 +00:00
icmp6.h
in6_cksum.c
in6_fib.c Fix lookup key generation in fib6_check_urpf(). 2020-04-19 07:27:12 +00:00
in6_fib.h Introduce nexthop objects and new routing KPI. 2020-04-12 14:30:00 +00:00
in6_gif.c Mechanically substitute assertion of in_epoch(net_epoch_preempt) to 2020-01-15 05:45:27 +00:00
in6_ifattach.c Don't cover in6_ifattach() with network epoch, as it may call into 2019-10-13 04:25:16 +00:00
in6_ifattach.h
in6_jail.c Move most of the contents of opt_compat.h to opt_global.h. 2018-04-06 17:35:35 +00:00
in6_mcast.c Use a dedicated taskqueue thread for in6m_release_task(). 2020-03-31 02:25:53 +00:00
in6_pcb.c Convert route caching to nexthop caching. 2020-04-25 09:06:11 +00:00
in6_pcb.h Fix race when accepting TCP connections. 2020-01-12 17:52:32 +00:00
in6_pcbgroup.c
in6_proto.c Avoid calling protocol drain routines more than once per reclamation event. 2020-04-16 20:17:24 +00:00
in6_rmx.c Plug netmask NULL check during route addition causing kernel panic. 2020-04-14 13:12:22 +00:00
in6_rss.c
in6_rss.h
in6_src.c Convert route caching to nexthop caching. 2020-04-25 09:06:11 +00:00
in6_var.h Bring back redirect route expiration. 2020-01-22 13:53:18 +00:00
in6.c Introduce NET_EPOCH_CALL() macro and use it everywhere where we free 2020-01-15 06:05:20 +00:00
in6.h Convert route caching to nexthop caching. 2020-04-25 09:06:11 +00:00
ip6_ecn.h
ip6_fastfwd.c Convert IP/IPv6 forwarding, ICMP processing and IP PCB laddr selection to 2020-04-14 23:06:25 +00:00
ip6_forward.c Convert ip6_forward() to the new routing KPI. 2020-04-15 12:56:05 +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 Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
ip6_mroute.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
ip6_mroute.h
ip6_output.c Convert route caching to nexthop caching. 2020-04-25 09:06:11 +00:00
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 Add ability to use dynamic external prefix in ipfw_nptv6 module. 2018-11-12 11:20:59 +00:00
mld6_var.h icmpv6: Fix mbuf change in mld 2019-11-18 21:59:47 +00:00
mld6.c mld6: initialize oifp to avoid bogus results/panics in edge cases 2020-02-28 11:16:41 +00:00
mld6.h
nd6_nbr.c Remove RADIX_MPATH headers, they were unused since r293159. 2020-04-11 07:56:11 +00:00
nd6_rtr.c Convert rtentry field accesses into nhop field accesses. 2020-04-23 08:04:20 +00:00
nd6.c Convert rtentry field accesses into nhop field accesses. 2020-04-23 08:04:20 +00:00
nd6.h Convert rtentry field accesses into nhop field accesses. 2020-04-23 08:04:20 +00:00
pim6_var.h Rework IP encapsulation handling code. 2018-06-05 20:51:01 +00:00
pim6.h
raw_ip6.c Make ip6_output() and ip_output() require network epoch. 2020-01-22 05:51:22 +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 Convert ip6_forward() to the new routing KPI. 2020-04-15 12:56:05 +00:00
scope6.c Convert ip6_forward() to the new routing KPI. 2020-04-15 12:56:05 +00:00
sctp6_usrreq.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (14 of many) 2020-02-24 10:47:18 +00:00
sctp6_var.h Whitespace changes due to changes in ident. 2018-07-19 20:16:33 +00:00
send.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
send.h
tcp6_var.h Remove tcp_rtlookup6() function signature. 2020-04-13 08:26:11 +00:00
udp6_usrreq.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
udp6_var.h