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freebsd-skq/sys/net
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bz 7a1c0b1ad1 Get closer to a VIMAGE network stack teardown from top to bottom rather 
than removing the network interfaces first. This change is rather larger
and convoluted as the ordering requirements cannot be separated.

Move the pfil(9) framework to SI_SUB_PROTO_PFIL, move Firewalls and
related modules to their own SI_SUB_PROTO_FIREWALL.
Move initialization of "physical" interfaces to SI_SUB_DRIVERS,
move virtual (cloned) interfaces to SI_SUB_PSEUDO.
Move Multicast to SI_SUB_PROTO_MC.

Re-work parts of multicast initialisation and teardown, not taking the
huge amount of memory into account if used as a module yet.

For interface teardown we try to do as many of them as we can on
SI_SUB_INIT_IF, but for some this makes no sense, e.g., when tunnelling
over a higher layer protocol such as IP. In that case the interface
has to go along (or before) the higher layer protocol is shutdown.

Kernel hhooks need to go last on teardown as they may be used at various
higher layers and we cannot remove them before we cleaned up the higher
layers.

For interface teardown there are multiple paths:
(a) a cloned interface is destroyed (inside a VIMAGE or in the base system),
(b) any interface is moved from a virtual network stack to a different
network stack ("vmove"), or (c) a virtual network stack is being shut down.
All code paths go through if_detach_internal() where we, depending on the
vmove flag or the vnet state, make a decision on how much to shut down;
in case we are destroying a VNET the individual protocol layers will
cleanup their own parts thus we cannot do so again for each interface as
we end up with, e.g., double-frees, destroying locks twice or acquiring
already destroyed locks.
When calling into protocol cleanups we equally have to tell them
whether they need to detach upper layer protocols ("ulp") or not
(e.g., in6_ifdetach()).

Provide or enahnce helper functions to do proper cleanup at a protocol
rather than at an interface level.

Approved by:		re (hrs)
Obtained from:		projects/vnet
Reviewed by:		gnn, jhb
Sponsored by:		The FreeBSD Foundation
MFC after:		2 weeks
Differential Revision:	https://reviews.freebsd.org/D6747
2016-06-21 13:48:49 +00:00
..
altq Don't repeat the the word 'the' 2016-05-17 12:52:31 +00:00
bpf_buffer.c Remove the sleep from the buffer allocation routine. 2015-07-31 20:25:54 +00:00
bpf_buffer.h
bpf_filter.c sys/net* : for pointers replace 0 with NULL. 2016-04-15 17:30:33 +00:00
bpf_jitter.c
bpf_jitter.h
bpf_zerocopy.c
bpf_zerocopy.h
bpf.c sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00
bpf.h sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
bpfdesc.h
bridgestp.c sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
bridgestp.h
ethernet.h Add ethertype reserved for network testing 2016-03-28 18:25:54 +00:00
fddi.h
firewire.h
flowtable.c net: Use M_HASHTYPE_OPAQUE_HASH if the mbuf flowid has hash properties 2016-06-07 04:51:50 +00:00
flowtable.h
ieee8023ad_lacp.c Add sysctl to control LACP strict compliance default 2015-11-06 15:33:27 +00:00
ieee8023ad_lacp.h Make LAG LACP fast timeout tunable through IOCTL. 2015-08-12 20:21:04 +00:00
ieee_oui.h
if_arc.h
if_arcsubr.c This change re-adds L2 caching for TCP and UDP, as originally added in D4306 2016-06-02 17:51:29 +00:00
if_arp.h Remove struct arpcom. It is unused by most interface types, that allocate 2014-11-07 15:14:10 +00:00
if_atm.h sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
if_atmsubr.c sys/net* : for pointers replace 0 with NULL. 2016-04-15 17:30:33 +00:00
if_bridge.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_bridgevar.h
if_clone.c sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
if_clone.h Fix group membership of cloned interfaces when one is moved by 2015-03-02 20:00:03 +00:00
if_dead.c Provide a dead version of if_get_counter. 2014-12-12 16:10:42 +00:00
if_debug.c Add more fields from struct ifnet needed during debugging a kernel panic. 2016-04-20 21:04:39 +00:00
if_disc.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_dl.h Constantify lookup key in ifa_ifwith* functions. 2015-09-05 05:33:20 +00:00
if_edsc.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_enc.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_enc.h Overhaul if_enc(4) and make it loadable in run-time. 2015-11-25 07:31:59 +00:00
if_epair.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_ethersubr.c Make the KASSERT message more helpful by also printing the ifp information 2016-06-06 10:13:48 +00:00
if_fddisubr.c This change re-adds L2 caching for TCP and UDP, as originally added in D4306 2016-06-02 17:51:29 +00:00
if_fwsubr.c This change re-adds L2 caching for TCP and UDP, as originally added in D4306 2016-06-02 17:51:29 +00:00
if_gif.c Cleanup unnecessary semicolons from the kernel. 2016-04-10 23:07:00 +00:00
if_gif.h - Remove GIF_{SEND,ACCEPT}_REVETHIP. 2015-09-10 05:59:39 +00:00
if_gre.c Cleanup unnecessary semicolons from the kernel. 2016-04-10 23:07:00 +00:00
if_gre.h Extern declarations in C files loses compile-time checking that 2014-12-25 21:32:37 +00:00
if_iso88025subr.c This change re-adds L2 caching for TCP and UDP, as originally added in D4306 2016-06-02 17:51:29 +00:00
if_lagg.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_lagg.h Revert accidental submit of WIP as part of r297609 2016-04-06 04:58:20 +00:00
if_llatbl.c sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
if_llatbl.h This change re-adds L2 caching for TCP and UDP, as originally added in D4306 2016-06-02 17:51:29 +00:00
if_llc.h
if_loop.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_me.c Add IFCAP_LINKSTATE support. 2015-10-03 09:15:23 +00:00
if_media.c Make IFMEDIA_DEBUG a kernel option. 2015-04-21 10:35:23 +00:00
if_media.h ifmedia changes: 2015-04-07 21:31:17 +00:00
if_mib.c These files were getting sys/malloc.h and vm/uma.h with header pollution 2016-02-01 17:41:21 +00:00
if_mib.h
if_pflog.h
if_pfsync.h
if_sppp.h sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
if_spppfr.c Mechanically convert to if_inc_counter(). 2014-09-19 10:39:58 +00:00
if_spppsubr.c sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
if_stf.c Convert if_stf(4) to new routing api. 2015-12-16 09:18:20 +00:00
if_tap.c if_tap: correct typo in sysctl description (Enably) 2015-10-21 19:56:16 +00:00
if_tap.h
if_tapvar.h
if_tun.c Allow writing IP packets of length TUNMRU no matter if TUNSIFHEAD is set 2016-05-19 13:52:12 +00:00
if_tun.h Allow an MTU of 65535 bytes to be set via TUN[SG]IFINFO. This requires 2016-05-24 11:47:14 +00:00
if_types.h After r281643 an #ifdef IFT_FOO preprocessor directive returns false, 2015-05-02 20:37:40 +00:00
if_var.h Rather than having the if_vmove() code intermixed in the vnet_destroy() 2016-05-18 20:06:45 +00:00
if_vlan_var.h Add support to priority code point (PCP) that is an 3-bit field 2016-06-06 09:51:58 +00:00
if_vlan.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if_vxlan.c net: Use M_HASHTYPE_OPAQUE_HASH if the mbuf flowid has hash properties 2016-06-07 04:51:50 +00:00
if_vxlan.h Add vxlan interface 2014-10-20 14:42:42 +00:00
if.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
if.h Add support to priority code point (PCP) that is an 3-bit field 2016-06-06 09:51:58 +00:00
ifdi_if.m Import the 'iflib' API library for network drivers. From the author: 2016-05-18 04:35:58 +00:00
iflib.c iflib: Improve cleanup on iflib_queues_alloc error path 2016-06-07 20:26:00 +00:00
iflib.h Import the 'iflib' API library for network drivers. From the author: 2016-05-18 04:35:58 +00:00
ifq.h buf_ring/drbr: Add buf_ring_peek_clear_sc and use it in drbr_peek 2016-02-29 03:54:51 +00:00
iso88025.h
mp_ring.c sys/net: more spelling. 2016-05-19 16:28:05 +00:00
mp_ring.h Import the 'iflib' API library for network drivers. From the author: 2016-05-18 04:35:58 +00:00
mppc.h ng_mppc(4): Bring netgraph(3) MPPC compression support. 2016-06-07 15:07:00 +00:00
mppcc.c ng_mppc(4): Bring netgraph(3) MPPC compression support. 2016-06-07 15:07:00 +00:00
mppcd.c ng_mppc(4): Bring netgraph(3) MPPC compression support. 2016-06-07 15:07:00 +00:00
netisr_internal.h
netisr.c Introduce a per-VNET flag to enable/disable netisr prcessing on that VNET. 2016-06-03 13:57:10 +00:00
netisr.h Introduce a per-VNET flag to enable/disable netisr prcessing on that VNET. 2016-06-03 13:57:10 +00:00
netmap_user.h Sync netmap sources with the version in our private tree. 2015-07-10 05:51:36 +00:00
netmap.h Sync netmap sources with the version in our private tree. 2015-07-10 05:51:36 +00:00
paravirt.h Update to the current version of netmap. 2014-08-16 15:00:01 +00:00
pfil.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
pfil.h
pfkeyv2.h Implement the sadb_x_policy_priority field as it is done in Linux: 2015-11-17 14:39:33 +00:00
pfvar.h pf: Filter on and set vlan PCP values 2016-06-17 18:21:55 +00:00
ppp_defs.h
radix_mpath.c radix_mpath: Don't derefence a NULL pointer in for loop iteration 2016-04-26 20:27:17 +00:00
radix_mpath.h MFP r287070,r287073: split radix implementation and route table structure. 2016-01-25 06:33:15 +00:00
radix.c radix rn_inithead: Fix minor leak in low memory conditions 2016-04-20 02:01:45 +00:00
radix.h MFP r287070,r287073: split radix implementation and route table structure. 2016-01-25 06:33:15 +00:00
raw_cb.c
raw_cb.h
raw_usrreq.c sys/net* : for pointers replace 0 with NULL. 2016-04-15 17:30:33 +00:00
route_var.h FreeBSD previously provided route caching for TCP (and UDP). Re-add 2016-03-24 07:54:56 +00:00
route.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
route.h Provide a public interface to rt_flushifroutes which takes the address 2016-06-06 12:49:47 +00:00
rss_config.c sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
rss_config.h Replace the printf()s with optional rate limited debugging for RSS. 2015-08-28 05:58:16 +00:00
rtsock.c Introduce a per-VNET flag to enable/disable netisr prcessing on that VNET. 2016-06-03 13:57:10 +00:00
sff8436.h Add SFF-8024 Extended Specification Compliance 2015-12-28 09:26:07 +00:00
sff8472.h sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
slcompress.c
slcompress.h
toeplitz.c Refactor / restructure the RSS code into generic, IPv4 and IPv6 specific 2015-01-18 18:06:40 +00:00
toeplitz.h Refactor / restructure the RSS code into generic, IPv4 and IPv6 specific 2015-01-18 18:06:40 +00:00
vnet.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
vnet.h Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00