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a779388f8b
freebsd-skq/sys/net
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Kristof Provost a779388f8b if: Protect V_ifnet in vnet_if_return() 
When we terminate a vnet (i.e. jail) we move interfaces back to their home
vnet. We need to protect our access to the V_ifnet CK_LIST.

We could enter NET_EPOCH, but if_detach_internal() (called from if_vmove())
waits for net epoch callback completion. That's not possible from NET_EPOCH.
Instead, we take the IFNET_WLOCK, build a list of the interfaces that need to
move and, once we've released the lock, move them back to their home vnet.

We cannot hold the IFNET_WLOCK() during if_vmove(), because that results in a
LOR between ifnet_sx, in_multi_sx and iflib ctx lock.

Separate out moving the ifp into or out of V_ifnet, so we can hold the lock as
we do the list manipulation, but do not hold it as we if_vmove().

Reviewed by:	melifaro
MFC after:	2 weeks
Sponsored by:	Modirum MDPay
Differential Revision:	https://reviews.freebsd.org/D27279
2020-11-25 15:07:22 +00:00
..
altq net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
route Refactor rib iterator functions. 2020-11-22 20:21:10 +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 net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
bpf.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
bpfdesc.h Rework locking in BPF code to remove rwlock from fast path. 2019-05-13 13:45:28 +00:00
bridgestp.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
bridgestp.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
debugnet_inet.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
debugnet_int.h Implement NetGDB(4) 2019-10-17 21:33:01 +00:00
debugnet.c Convert debugnet to the new routing KPI. 2020-04-26 18:42:38 +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 net: add ETHER_IS_IPV6_MULTICAST 2020-10-30 13:32:58 +00:00
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 Fix a typo in r349969 2019-07-14 03:49:48 +00:00
if_arp.h
if_bridge.c bridge: call member interface ioctl() without NET_EPOCH 2020-10-06 19:19:56 +00:00
if_bridgevar.h libifconfig: Add function to get bridge status 2020-07-01 02:32:41 +00:00
if_clone.c Add support for stacked VLANs (IEEE 802.1ad, AKA Q-in-Q). 2020-10-21 21:28:20 +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: mitigate vnet / epair cleanup races 2020-09-08 14:54:10 +00:00
if_ethersubr.c Add support for IP over infiniband, IPoIB, to lagg(4). Currently only 2020-10-22 09:47:12 +00:00
if_fwsubr.c
if_gif.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_gif.h gif_transmit() must always be called in the network epoch. 2020-01-15 06:18:32 +00:00
if_gre.c Add if_reassing method to all tunneling interfaces. 2020-06-03 13:02:31 +00:00
if_gre.h
if_infiniband.c More style fixes (partial revert of r366994). 2020-10-24 13:07:50 +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 LACP: When suppressing distributing, return ENOBUFS 2020-11-18 14:55:49 +00:00
if_lagg.h Add support for IP over infiniband, IPoIB, to lagg(4). Currently only 2020-10-22 09:47:12 +00:00
if_llatbl.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_llatbl.h Implement optional table entry limits for if_llatbl. 2020-03-04 17:17:02 +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 net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_sppp.h
if_spppfr.c
if_spppsubr.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_stf.c Complete conversions from fib<4|6>_lookup_nh_<basic|ext> to fib<4|6>_lookup(). 2020-07-02 21:04:08 +00:00
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 net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_types.h Add support for IP over infiniband, IPoIB, to lagg(4). Currently only 2020-10-22 09:47:12 +00:00
if_var.h if: Remove ifnet_rwlock 2020-11-25 10:56:38 +00:00
if_vlan_var.h Add support for stacked VLANs (IEEE 802.1ad, AKA Q-in-Q). 2020-10-21 21:28:20 +00:00
if_vlan.c Add m_snd_tag_alloc() as a wrapper around if_snd_tag_alloc(). 2020-10-29 23:28:39 +00:00
if_vxlan.c if_vxlan(4): csum_flags_to_inner_flags takes the tunnel protocol as a parameter. 2020-10-22 17:05:55 +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 if: Protect V_ifnet in vnet_if_return() 2020-11-25 15:07:22 +00:00
if.h Support hardware rate limiting (pacing) with TLS offload. 2020-10-29 00:23:16 +00:00
ifdi_if.m iflib: Stop interface before (un)registering VLAN 2020-04-27 22:02:44 +00:00
iflib_clone.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
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: Free full mbuf chains when draining transmit queues 2020-11-11 18:00:06 +00:00
iflib.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
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
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 net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
netmap_user.h netmap: fix constness warnings generated by "-Wcast-qual" 2020-10-03 09:33:29 +00:00
netmap_virt.h netmap: disable passthrough with no hypervisor support 2020-01-13 21:47:23 +00:00
netmap.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +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
pfkeyv2.h Add SADB_SAFLAGS_ESN flag 2020-10-16 11:22:29 +00:00
pfvar.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ppp_defs.h
radix_mpath.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
radix_mpath.h Convert rtalloc_mpath_fib() users to the new KPI. 2020-04-28 08:06:56 +00:00
radix.c Fix definition of rn_addmask() 2020-11-08 19:02:22 +00:00
radix.h
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
rndis.h
route.c Refactor rib iterator functions. 2020-11-22 20:21:10 +00:00
route.h Refactor rib iterator functions. 2020-11-22 20:21:10 +00:00
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 Fix route flags update during RTM_CHANGE. 2020-10-04 13:24:58 +00:00
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 Partially revert VNET change and expand VNET structure. 2020-02-17 11:08:50 +00:00
vnet.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00