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freebsd-nq/sys/netinet6
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Bjoern A. Zeeb 997fecb5c2 Update udp6_output() inp locking to avoid concurrency issues with 
route cache updates.

Bring over locking changes applied to udp_output() for the route cache
in r297225 and fixed in r306559 which achieve multiple things:
(1) acquire an exclusive inp lock earlier depending on the expected
    conditions; we add a comment explaining this in udp6,
(2) having acquired the exclusive lock earlier eliminates a slight
    possible chance for a race condition which was present in v4 for
    multiple years as well and is now gone, and
(3) only pass the inp_route6 to ip6_output() if we are holding an
    exclusive inp lock, so that possible route cache updates in case
    of routing table generation number changes can happen safely.
In addition this change (as the legacy IP counterpart) decomposes the
tracking of inp and pcbinfo lock and adds extra assertions, that the
two together are acquired correctly.

PR:		230950
Reviewed by:	karels, markj
Approved by:	re (gjb)
Pointyhat to:	bz (for completely missing this bit)
Differential Revision:	https://reviews.freebsd.org/D17230
2018-09-19 18:49:37 +00:00
..
dest6.c Remove some unneccessary variable sets in IPv6 code, as detected by 2018-03-24 12:43:34 +00:00
frag6.c frag6: Fix fragment reassembly 2018-08-31 08:37:15 +00:00
icmp6.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
icmp6.h
in6_cksum.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
in6_fib.c Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
in6_fib.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
in6_gif.c Properly initialize IP version in IPv6 header. This was missed in r334673. 2018-08-16 09:19:06 +00:00
in6_ifattach.c Fix in6_multi double free 2018-08-15 20:23:08 +00:00
in6_ifattach.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
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 in_mcast: fix copy paste error when clearing flag 2018-08-22 04:09:55 +00:00
in6_pcb.c Fix synchronization of LB group access. 2018-09-10 19:00:29 +00:00
in6_pcb.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
in6_pcbgroup.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
in6_proto.c Implement a limit on on the number of IPv6 reassembly queues per bucket. 2018-08-14 17:27:41 +00:00
in6_rmx.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
in6_rss.c
in6_rss.h
in6_src.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
in6_var.h Fix in6_multi double free 2018-08-15 20:23:08 +00:00
in6.c Move invoking of callout_stop(&lle->lle_timer) into llentry_free(). 2018-07-17 11:33:23 +00:00
in6.h Implement a limit on on the number of IPv6 reassembly queues per bucket. 2018-08-14 17:27:41 +00:00
ip6_ecn.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ip6_fastfwd.c Send an ICMPv6 PacketTooBig message in case of forwading a packet which 2018-05-02 22:11:16 +00:00
ip6_forward.c netpfil: Introduce PFIL_FWD flag 2018-03-23 16:56:44 +00:00
ip6_gre.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
ip6_id.c Fix some typos. 2017-12-28 20:40:56 +00:00
ip6_input.c Restore ability to send ICMP and ICMPv6 redirects. 2018-08-14 07:54:14 +00:00
ip6_mroute.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
ip6_mroute.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ip6_output.c Replicate r328271 from legacy IP to IPv6 using a single macro 2018-09-03 22:27:27 +00:00
ip6_var.h Implement a limit on on the number of IPv6 reassembly queues per bucket. 2018-08-14 17:27:41 +00:00
ip6.h
ip6protosw.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ip_fw_nat64.h Add ipfw_nat64 module that implements stateless and stateful NAT64. 2016-08-13 16:09:49 +00:00
ip_fw_nptv6.h Add ipfw_nptv6 module that implements Network Prefix Translation for IPv6 2016-07-18 19:46:31 +00:00
mld6_var.h Separate list manipulation locking from state change in multicast 2018-05-02 19:36:29 +00:00
mld6.c Fix null deref in mld_v1_transmit_report 2018-08-21 23:03:02 +00:00
mld6.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
nd6_nbr.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
nd6_rtr.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
nd6.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
nd6.h Do pass removing some write-only variables from the kernel. 2017-12-25 04:48:39 +00:00
pim6_var.h Rework IP encapsulation handling code. 2018-06-05 20:51:01 +00:00
pim6.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
raw_ip6.c epoch(9): allow preemptible epochs to compose 2018-07-04 02:47:16 +00:00
raw_ip6.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
route6.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
scope6_var.h Constify argument of in6_getscope(). 2018-06-05 20:54:29 +00:00
scope6.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
sctp6_usrreq.c Use a macro to set the assoc state. I missed this in r337706. 2018-08-14 08:33:47 +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 sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
tcp6_var.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
udp6_usrreq.c Update udp6_output() inp locking to avoid concurrency issues with 2018-09-19 18:49:37 +00:00
udp6_var.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00