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c541bd368f
freebsd-dev/sys/net
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Alexander V. Chernikov c541bd368f lltable: Add support for "child" LLEs holding encap for IPv4oIPv6 entries. 
Currently we use pre-calculated headers inside LLE entries as prepend data
 for `if_output` functions. Using these headers allows saving some
 CPU cycles/memory accesses on the fast path.

However, this approach makes adding L2 header for IPv4 traffic with IPv6
 nexthops more complex, as it is not possible to store multiple
 pre-calculated headers inside lle. Additionally, the solution space is
 limited by the fact that PCB caching saves LLEs in addition to the nexthop.

Thus, add support for creating special "child" LLEs for the purpose of holding
 custom family encaps and store mbufs pending resolution. To simplify handling
 of those LLEs, store them in a linked-list inside a "parent" (e.g. normal) LLE.
 Such LLEs are not visible when iterating LLE table. Their lifecycle is bound
 to the "parent" LLE - it is not possible to delete "child" when parent is alive.
 Furthermore, "child" LLEs are static (RTF_STATIC), avoding complex state
 machine used by the standard LLEs.

nd6_lookup() and nd6_resolve() now accepts an additional argument, family,
 allowing to return such child LLEs. This change uses `LLE_SF()` macro which
 packs family and flags in a single int field. This is done to simplify merging
 back to stable/. Once this code lands, most of the cases will be converted to
 use a dedicated `family` parameter.

Differential Revision: https://reviews.freebsd.org/D31379
MFC after:	2 weeks
2021-08-21 17:34:35 +00:00
..
altq altq: Increase maximum number of CBQ and HFSC classes 2021-03-04 20:58:22 +01:00
route routing: Fix crashes with dpdk_lpm[46] algo. 2021-08-17 20:46:22 +00:00
bpf_buffer.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
bpf_buffer.h
bpf_filter.c
bpf_jitter.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
bpf_jitter.h
bpf_zerocopy.c Change synchonization rules for vm_page reference counting. 2019-09-09 21:32:42 +00:00
bpf_zerocopy.h
bpf.c Introduce m_get3() 2021-08-18 08:48:27 +02:00
bpf.h bpf: Add an ioctl to set the VLAN Priority on packets sent by bpf 2021-07-26 23:13:31 +02:00
bpfdesc.h bpf: Add an ioctl to set the VLAN Priority on packets sent by bpf 2021-07-26 23:13:31 +02:00
bridgestp.c bridgestp: validate timer values in config BPDU 2021-04-19 12:09:18 +02:00
bridgestp.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
debugnet_inet.c debugnet: Fix false-positive assertions for dp_state 2021-07-28 16:34:14 -07:00
debugnet_int.h Implement NetGDB(4) 2019-10-17 21:33:01 +00:00
debugnet.c Allow to specify debugnet fib in sysctl/tunable. 2021-04-10 13:47:49 +00:00
debugnet.h Implement NetGDB(4) 2019-10-17 21:33:01 +00:00
dlt.h MFV r353141 (by phillip): 2019-12-21 21:01:03 +00:00
ethernet.h ifconfig: Minor documentation fix 2021-05-03 14:38:52 +03:00
firewire.h
ieee8023ad_lacp.c LACP: When suppressing distributing, return ENOBUFS 2020-11-18 14:55:49 +00:00
ieee8023ad_lacp.h LACP: When suppressing distributing, return ENOBUFS 2020-11-18 14:55:49 +00:00
ieee_oui.h Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights 2021-08-08 10:42:24 -04:00
if_arp.h Improve ARP logging. 2019-03-09 01:12:59 +00:00
if_bridge.c if_bridge: allow MTU changes 2021-07-28 22:01:12 +02:00
if_bridgevar.h bridge: fix STP roles and protos strings 2021-02-01 15:27:06 +01:00
if_clone.c Fix subinterface vlan creation. 2021-01-29 21:43:20 +00:00
if_clone.h epair: Do not abuse params to register the second interface 2020-01-28 22:44:24 +00:00
if_dead.c This adds the third step in getting BBR into the tree. BBR and 2019-08-01 14:17:31 +00:00
if_debug.c
if_disc.c
if_dl.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_edsc.c if_edsc: generate an arbitrary MAC address 2020-03-02 02:45:57 +00:00
if_enc.c Consistently include opt_ipsec.h for consumers of <netipsec/ipsec.h>. 2020-05-29 19:22:40 +00:00
if_enc.h
if_epair.c net: Revert vnet/epair cleanup race mitigation 2020-12-01 16:34:43 +00:00
if_ethersubr.c lltable: Add support for "child" LLEs holding encap for IPv4oIPv6 entries. 2021-08-21 17:34:35 +00:00
if_fwsubr.c lltable: Add support for "child" LLEs holding encap for IPv4oIPv6 entries. 2021-08-21 17:34:35 +00:00
if_gif.c mbuf: add a way to mark flowid as calculated from the internal headers 2021-03-31 14:38:26 +03:00
if_gif.h gif_transmit() must always be called in the network epoch. 2020-01-15 06:18:32 +00:00
if_gre.c gre: simplify RSS ifdefs 2021-08-18 10:05:29 -07:00
if_gre.h Add GRE-in-UDP encapsulation support as defined in RFC8086. 2019-04-24 09:05:45 +00:00
if_infiniband.c lltable: Add support for "child" LLEs holding encap for IPv4oIPv6 entries. 2021-08-21 17:34:35 +00:00
if_ipsec.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_ipsec.h
if_lagg.c lagg: don't update link layer addresses on destroy 2021-08-19 10:49:32 +02:00
if_lagg.h Fix for IPoIB over lagg(4). 2020-12-29 17:35:06 +01:00
if_llatbl.c lltable: Add support for "child" LLEs holding encap for IPv4oIPv6 entries. 2021-08-21 17:34:35 +00:00
if_llatbl.h lltable: Add support for "child" LLEs holding encap for IPv4oIPv6 entries. 2021-08-21 17:34:35 +00:00
if_llc.h
if_loop.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_me.c Add if_reassing method to all tunneling interfaces. 2020-06-03 13:02:31 +00:00
if_media.c if_media.c SIOCGMEDIAX handler: improve loop 2020-11-03 14:33:04 +00:00
if_media.h if_media: definitions for 40GE LM4 ethernet media type 2020-09-16 14:45:16 +00:00
if_mib.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_mib.h
if_pflog.h
if_pfsync.h pfsync: Expose PFSYNCF_OK flag to userspace 2021-04-26 14:31:17 +02:00
if_sppp.h
if_spppfr.c
if_spppsubr.c Split rtinit() into multiple functions. 2021-01-16 22:42:41 +00:00
if_stf.c net: Introduce IPV6_DSCP(), IPV6_ECN() and IPV6_TRAFFIC_CLASS() macros 2021-03-04 20:56:48 +01:00
if_tap.h tap: add support for virtio-net offloads 2019-10-18 21:53:27 +00:00
if_tun.h if_tuntap(4): Add TUNGIFNAME 2019-07-25 22:23:34 +00:00
if_tuntap.c tuntap: clean up cc --analyze 2021-07-21 19:14:43 -05:00
if_types.h base: remove if_wg(4) and associated utilities, manpage 2021-03-17 09:14:48 -05:00
if_var.h Enforce check for using the return result for ifa?_try_ref(). 2021-04-05 03:35:19 +01:00
if_vlan_var.h vlan: deduplicate bpf_setpcp() and pf_ieee8021q_setpcp() 2021-07-26 23:13:31 +02:00
if_vlan.c vlan: deduplicate bpf_setpcp() and pf_ieee8021q_setpcp() 2021-07-26 23:13:31 +02:00
if_vxlan.c Make LINT NOINET and NOIP kernel builds warning free. 2021-06-06 14:03:06 +00:00
if_vxlan.h if_vxlan(4): add support for hardware assisted checksumming, TSO, and RSS. 2020-09-18 02:37:57 +00:00
if.c net: disallow MTU changes on bridge member interfaces 2021-07-28 22:03:30 +02:00
if.h Use thunks for compat ioctls using struct ifgroupreq. 2021-05-05 13:59:00 -07:00
ifdi_if.m iflib: add support for admin completion queues 2021-03-03 00:40:47 +01:00
iflib_clone.c iflib: allow clone detach if not yet init 2021-03-09 13:49:13 -06:00
iflib_private.h - Replace unused and only ever written to members of public iflib(9) 2019-06-15 11:07:41 +00:00
iflib.c iflib: emulate counters in netmap mode 2021-08-18 00:17:43 -07:00
iflib.h iflib: Add a new quirk 2021-06-24 13:00:56 +02:00
ifq.h Make net/ifq.h C++ friendly 2020-11-20 14:45:45 +00:00
infiniband.h Factor out generic IP over infiniband, IPoIB, definitions and code 2020-10-22 09:09:53 +00:00
mp_ring.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
mp_ring.h mp_ring: avoid items offset difference between iflib and mp_ring 2019-01-03 23:06:05 +00:00
mppc.h
mppcc.c kernel: provide panicky version of __unreachable 2020-05-13 18:07:37 +00:00
mppcd.c
netisr_internal.h
netisr.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
netisr.h
netmap_legacy.h netmap: add kernel support for the "offsets" feature 2021-03-29 16:29:01 +00:00
netmap_user.h netmap: restore commit a56e6334d1 2021-04-02 10:45:47 +00:00
netmap_virt.h netmap: add kernel support for the "offsets" feature 2021-03-29 16:29:01 +00:00
netmap.h netmap: several typo fixes 2021-04-02 07:01:20 +00:00
paravirt.h
pfil.c Since now drivers that support pfil run their interrupts in the network 2020-01-23 01:49:22 +00:00
pfil.h Most Ethernet drivers that potentially can run a pfil(9) hook with 2019-03-10 17:20:09 +00:00
pfkeyv2.h Add SADB_SAFLAGS_ESN flag 2020-10-16 11:22:29 +00:00
pfvar.h pf: remove DIOCGETSTATESNV 2021-07-30 11:45:28 +02:00
ppp_defs.h
radix.c routing: Fix crashes with dpdk_lpm[46] algo. 2021-08-17 20:46:22 +00:00
radix.h routing: Fix crashes with dpdk_lpm[46] algo. 2021-08-17 20:46:22 +00:00
raw_cb.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
raw_cb.h
raw_usrreq.c socket: Implement SO_RERROR 2021-07-28 09:35:09 -07:00
rndis.h Hyper-V: hn: Enable vSwitch RSC support in hn netvsc driver 2021-03-12 04:35:16 +00:00
route.c devctl: add ADDR_ADD and ADDR_DEL devctl event for IFNET 2021-06-23 10:26:56 -06:00
route.h Re-enable network ioctls in capability mode 2021-04-23 09:22:49 -04:00
rss_config.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
rss_config.h
rtsock.c Add required sysctl name length checks to various handlers 2021-07-23 10:47:13 -04:00
sff8436.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sff8472.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
slcompress.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
slcompress.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
toeplitz.c
toeplitz.h
vnet.c Widen ifnet_detach_sxlock coverage 2021-02-11 16:12:29 +01:00
vnet.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00