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022cf5e713
freebsd-skq/sys/netinet
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zec d78a1b1a82 Change the curvnet variable from a global const struct vnet *, 
previously always pointing to the default vnet context, to a
dynamically changing thread-local one.  The currvnet context
should be set on entry to networking code via CURVNET_SET() macros,
and reverted to previous state via CURVNET_RESTORE().  Recursions
on curvnet are permitted, though strongly discuouraged.

This change should have no functional impact on nooptions VIMAGE
kernel builds, where CURVNET_* macros expand to whitespace.

The curthread->td_vnet (aka curvnet) variable's purpose is to be an
indicator of the vnet context in which the current network-related
operation takes place, in case we cannot deduce the current vnet
context from any other source, such as by looking at mbuf's
m->m_pkthdr.rcvif->if_vnet, sockets's so->so_vnet etc.  Moreover, so
far curvnet has turned out to be an invaluable consistency checking
aid: it helps to catch cases when sockets, ifnets or any other
vnet-aware structures may have leaked from one vnet to another.

The exact placement of the CURVNET_SET() / CURVNET_RESTORE() macros
was a result of an empirical iterative process, whith an aim to
reduce recursions on CURVNET_SET() to a minimum, while still reducing
the scope of CURVNET_SET() to networking only operations - the
alternative would be calling CURVNET_SET() on each system call entry.
In general, curvnet has to be set in three typicall cases: when
processing socket-related requests from userspace or from within the
kernel; when processing inbound traffic flowing from device drivers
to upper layers of the networking stack, and when executing
timer-driven networking functions.

This change also introduces a DDB subcommand to show the list of all
vnet instances.

Approved by:	julian (mentor)
2009-05-05 10:56:12 +00:00
..
libalias What's the point of adjusting a checksum if we are going to toss the 2009-04-11 15:26:31 +00:00
accf_data.c
accf_dns.c
accf_http.c
icmp6.h Add MLDv2 prototypes and defines. 2009-04-29 10:20:17 +00:00
icmp_var.h Update stats in struct icmpstat and icmp6stat using four new 2009-04-12 13:22:33 +00:00
if_atm.c This main goals of this project are: 2008-12-15 06:10:57 +00:00
if_atm.h
if_ether.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
if_ether.h remove dependency on net/if.h of this header 2009-02-16 15:07:40 +00:00
igmp_var.h Update stats in struct igmpstat using two new macros: 2009-04-12 13:41:13 +00:00
igmp.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
igmp.h Comment IGMP_PIM as being very historic, as in, don't use. 2009-03-19 01:15:26 +00:00
in_cksum.c
in_gif.c Update stats in struct ipstat using four new macros, IPSTAT_ADD(), 2009-04-11 23:35:20 +00:00
in_gif.h
in_mcast.c Cut over to KTR_INET for CTR. 2009-04-29 10:14:16 +00:00
in_pcb.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
in_pcb.h Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
in_proto.c Merge IGMPv3 and Source-Specific Multicast (SSM) to the FreeBSD 2009-03-09 17:53:05 +00:00
in_rmx.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
in_systm.h Use uint32_t instead of n_long and n_time, and uint16_t instead of n_short. 2009-02-13 15:14:43 +00:00
in_var.h make LLTABLE visible to netinet 2009-04-15 20:49:59 +00:00
in.c In preparation for turning on options VIMAGE in next commits, 2009-04-26 22:06:42 +00:00
in.h Namespace: Defining htonl() and friends here instead of arpa/inet.h is 2009-03-14 20:16:54 +00:00
ip6.h Start removing IPv6 Type 0 Routing header code. 2009-03-03 13:12:12 +00:00
ip_carp.c Bite the bullet, and make the IPv6 SSM and MLDv2 mega-commit: 2009-04-29 19:19:13 +00:00
ip_carp.h Update stats in struct carpstats using two new macros: CARPSTATS_ADD() 2009-04-12 14:19:37 +00:00
ip_divert.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
ip_divert.h
ip_dummynet.c Add emulation of delay profiles, which lets you model various 2009-04-09 12:46:00 +00:00
ip_dummynet.h Add emulation of delay profiles, which lets you model various 2009-04-09 12:46:00 +00:00
ip_ecn.c
ip_ecn.h
ip_encap.c
ip_encap.h
ip_fastfwd.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
ip_fw2.c Optimize packet flow: if net.inet.ip.fw.one_pass != 0 and packet was 2009-04-27 17:37:36 +00:00
ip_fw_nat.c Prefer actual field names (if_addrhead, ifa_link) to macros aliasing 2009-04-20 22:40:44 +00:00
ip_fw_pfil.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
ip_fw.h Make indentation more uniform accross vnet container structs. 2009-05-02 08:16:26 +00:00
ip_gre.c
ip_gre.h
ip_icmp.c In icmp_reflect(), acquire the inteface address list lock when 2009-04-20 13:45:39 +00:00
ip_icmp.h Use uint32_t instead of n_long and n_time, and uint16_t instead of n_short. 2009-02-13 15:14:43 +00:00
ip_id.c Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
ip_input.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
ip_ipsec.c Don't require packet to match a route (any route; this information wasn't 2009-04-28 11:10:33 +00:00
ip_ipsec.h
ip_mroute.c Use KTR_INET for MROUTING CTRs. 2009-04-29 10:17:08 +00:00
ip_mroute.h Bracket struct mfc and struct rtdetq with #ifdef _KERNEL. 2009-04-21 12:47:09 +00:00
ip_options.c Update stats in struct ipstat using four new macros, IPSTAT_ADD(), 2009-04-11 23:35:20 +00:00
ip_options.h Add function ip_checkrouteralert(), which will be used 2009-03-04 02:51:22 +00:00
ip_output.c Don't require packet to match a route (any route; this information wasn't 2009-04-28 11:10:33 +00:00
ip_var.h Update stats in struct ipstat using four new macros, IPSTAT_ADD(), 2009-04-11 23:35:20 +00:00
ip.h Use uint32_t instead of n_long and n_time, and uint16_t instead of n_short. 2009-02-13 15:14:43 +00:00
pim_var.h Update stats in struct pimstat using two new macros: PIMSTAT_ADD() 2009-04-12 14:06:26 +00:00
pim.h
raw_ip.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
sctp_asconf.c Code from the hack-session known as the IETF (and a 2008-12-06 13:19:54 +00:00
sctp_asconf.h Code from the hack-session known as the IETF (and a 2008-12-06 13:19:54 +00:00
sctp_auth.c - Cleanup checksum code. 2009-02-03 11:04:03 +00:00
sctp_auth.h Code from the hack-session known as the IETF (and a 2008-12-06 13:19:54 +00:00
sctp_bsd_addr.c Add missing address lock when we look at the ifa list 2009-04-14 19:20:27 +00:00
sctp_bsd_addr.h
sctp_cc_functions.c
sctp_cc_functions.h
sctp_constants.h Fixes several PR-SCTP releated bugs. 2009-03-14 13:42:13 +00:00
sctp_crc32.c Fix the add stream feature of strm-reset to really work: 2009-02-27 20:54:45 +00:00
sctp_crc32.h This commit fixes the issue with alias_sctp.c. No 2009-02-14 11:34:57 +00:00
sctp_header.h Add the add-stream capability. Still needs more 2009-02-20 15:03:54 +00:00
sctp_indata.c Move the flight size reduction to right after 2009-04-14 07:50:29 +00:00
sctp_indata.h Code from the hack-session known as the IETF (and a 2008-12-06 13:19:54 +00:00
sctp_input.c Many bug fixes (from the IETF hack-fest): 2009-04-04 11:43:32 +00:00
sctp_input.h
sctp_lock_bsd.h
sctp_os_bsd.h - PR-SCTP bug, where the CUM-ACK was not being updated 2009-03-04 20:54:42 +00:00
sctp_os.h
sctp_output.c Many bug fixes (from the IETF hack-fest): 2009-04-04 11:43:32 +00:00
sctp_output.h Fix the add stream feature of strm-reset to really work: 2009-02-27 20:54:45 +00:00
sctp_pcb.c Many bug fixes (from the IETF hack-fest): 2009-04-04 11:43:32 +00:00
sctp_pcb.h - Cleanup checksum code. 2009-02-03 11:04:03 +00:00
sctp_peeloff.c
sctp_peeloff.h
sctp_structs.h add an llentry to struct route{_in6} to allow it to be passed around with 2009-04-15 20:34:19 +00:00
sctp_sysctl.c Add more padding and a new variable. This will 2009-04-08 12:49:36 +00:00
sctp_sysctl.h Many bug fixes (from the IETF hack-fest): 2009-04-04 11:43:32 +00:00
sctp_timer.c Fixes several PR-SCTP releated bugs. 2009-03-14 13:42:13 +00:00
sctp_timer.h Invariants changes that make more sense. 2008-10-27 13:53:31 +00:00
sctp_uio.h Add more padding and a new variable. This will 2009-04-08 12:49:36 +00:00
sctp_usrreq.c Many bug fixes (from the IETF hack-fest): 2009-04-04 11:43:32 +00:00
sctp_var.h Fixes several PR-SCTP releated bugs. 2009-03-14 13:42:13 +00:00
sctp.h Fixes several PR-SCTP releated bugs. 2009-03-14 13:42:13 +00:00
sctputil.c Many bug fixes (from the IETF hack-fest): 2009-04-04 11:43:32 +00:00
sctputil.h Fixes several PR-SCTP releated bugs. 2009-03-14 13:42:13 +00:00
tcp_debug.c To my reading there are no real consumers of ip6_plen (IPv6 2008-09-07 20:44:45 +00:00
tcp_debug.h Use uint32_t instead of n_long and n_time, and uint16_t instead of n_short. 2009-02-13 15:14:43 +00:00
tcp_fsm.h
tcp_hostcache.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
tcp_hostcache.h Add an essential .h file that skipped from the last commit (r185419). 2008-11-28 23:39:25 +00:00
tcp_input.c Update stats in struct tcpstat using two new macros, TCPSTAT_ADD() and 2009-04-11 22:07:19 +00:00
tcp_lro.c
tcp_lro.h
tcp_offload.c Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
tcp_offload.h
tcp_output.c Update stats in struct tcpstat using two new macros, TCPSTAT_ADD() and 2009-04-11 22:07:19 +00:00
tcp_reass.c Update stats in struct tcpstat using two new macros, TCPSTAT_ADD() and 2009-04-11 22:07:19 +00:00
tcp_sack.c Update stats in struct tcpstat using two new macros, TCPSTAT_ADD() and 2009-04-11 22:07:19 +00:00
tcp_seq.h
tcp_subr.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
tcp_syncache.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
tcp_syncache.h Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
tcp_timer.c Update stats in struct tcpstat using two new macros, TCPSTAT_ADD() and 2009-04-11 22:07:19 +00:00
tcp_timer.h
tcp_timewait.c Unbreak options VIMAGE + nooptions INVARIANTS kernel builds. 2009-05-02 05:02:28 +00:00
tcp_usrreq.c Update stats in struct tcpstat using two new macros, TCPSTAT_ADD() and 2009-04-11 22:07:19 +00:00
tcp_var.h Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
tcp.h
tcpip.h
toedev.h
udp_usrreq.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
udp_var.h Update stats in struct udpstat using two new macros, UDPSTAT_ADD() 2009-04-12 11:42:40 +00:00
udp.h
vinet.h Make indentation more uniform accross vnet container structs. 2009-05-02 08:16:26 +00:00