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freebsd-dev/sys/netinet
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Xin LI 9fe5092de1 Address an edge condition that we found at work, where the carp(4) 
interface goes to issue LINK_UP, then LINK_DOWN, then LINK_UP at
cold boot.  This behavior is not observed when carp(4) interface
is created slightly later, when the underlying interface is fully
up.

Before this change what happen at boot is roughly:

 - ifconfig creates em0 interface;
 - ifconfig clones a carp device using em0;
   (em0's link state is DOWN at this point)
 - carp state: INIT -> BACKUP [*]
 - carp state: BACKUP -> MASTER
 - [Some negotiate between em0 and switch]
 - em0 kicks up link state change event
   (em0's link state is now up DOWN at this point)
 - do_link_state_change() -> carp_carpdev_state()
 - carp state: MASTER -> INIT (via carp_set_state(sc, INIT)) [+]
 - carp state: INIT -> BACKUP
 - carp state: BACKUP -> MASTER

At the [*] stage, em0 did not received any broadcast message from other
node, and assume our node is the master, thus carp(4) sets the link
state to "UP" after becoming a master.  At [+], the master status
is forcely set to "INIT", then an election is casted, after which our
node would actually become a master.

We believe that at the [*] stage, the master status should remain as
"INIT" since the underlying parent interface's link state is not up.

Obtained from:	iXsystems, Inc.
Reported by:	jpaetzel
MFC after:	2 months
2010-08-08 07:04:27 +00:00
..
ipfw Fix operation of "netgraph" action in conjunction with the 2010-07-27 14:26:34 +00:00
libalias Don't use struct timezone. 2010-08-08 02:51:32 +00:00
accf_data.c Rework socket upcalls to close some races with setup/teardown of upcalls. 2009-06-01 21:17:03 +00:00
accf_dns.c Rework socket upcalls to close some races with setup/teardown of upcalls. 2009-06-01 21:17:03 +00:00
accf_http.c Rework socket upcalls to close some races with setup/teardown of upcalls. 2009-06-01 21:17:03 +00:00
icmp6.h MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
icmp_var.h Many network stack subsystems use a single global data structure to hold 2009-08-02 19:43:32 +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 Document the mandatory argument to the arptimer() and 2010-07-31 21:33:18 +00:00
if_ether.h Add arp_update_event. This replaces route_arp_update_event, which 2009-09-08 21:17:17 +00:00
igmp_var.h Update stats in struct igmpstat using two new macros: 2009-04-12 13:41:13 +00:00
igmp.c Fix a regression where DVMRP diagnostic traffic, such as that used 2010-04-27 14:14:21 +00:00
igmp.h These are no longer referenced in the tree, so can be safely removed. 2009-06-10 18:12:15 +00:00
in_cksum.c
in_gif.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
in_gif.h
in_mcast.c Fix a few issues related to the legacy 4.4 BSD multicast APIs. 2010-04-10 12:05:31 +00:00
in_pcb.c This patch fixes the problem where proxy ARP entries cannot be added 2010-05-25 20:42:35 +00:00
in_pcb.h Abstract out initialization of most aspects of struct inpcbinfo from 2010-03-14 18:59:11 +00:00
in_proto.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
in_rmx.c MFp4 @181628: 2010-07-31 15:31:23 +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 Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
in.c This patch fixes the problem where proxy ARP entries cannot be added 2010-05-25 20:42:35 +00:00
in.h Add definition of IPv6 mobility header's protocol number, as assigned by 2010-03-31 23:02:25 +00:00
ip6.h Start removing IPv6 Type 0 Routing header code. 2009-03-03 13:12:12 +00:00
ip_carp.c Address an edge condition that we found at work, where the carp(4) 2010-08-08 07:04:27 +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 Add pcb reference counting to the pcblist sysctl handler functions 2010-03-17 18:28:27 +00:00
ip_divert.h Various cleanup done in ipfw3-head branch including: 2010-01-04 19:01:22 +00:00
ip_dummynet.h whitespace fixes (trailing whitespace, bad indentation 2010-04-19 16:17:30 +00:00
ip_ecn.c
ip_ecn.h
ip_encap.c (S)LIST_HEAD_INITIALIZER takes a (S)LIST_HEAD as an argument. 2009-12-28 22:56:30 +00:00
ip_encap.h
ip_fastfwd.c Virtualize the pfil hooks so that different jails may chose different 2009-10-11 05:59:43 +00:00
ip_fw.h + implement (two lines) the kernel side of 'lookup dscp N' to use the 2010-03-15 17:14:27 +00:00
ip_gre.c The NetBSD Foundation has granted permission to remove clause 3 and 4 from 2010-03-01 17:05:46 +00:00
ip_gre.h The NetBSD Foundation has granted permission to remove clause 3 and 4 from 2010-03-01 17:05:46 +00:00
ip_icmp.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
ip_icmp.h MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
ip_id.c Rather than using hidden includes (with cicular dependencies), 2008-12-02 21:37:28 +00:00
ip_input.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
ip_ipsec.c The proper fix for the delayed SCTP checksum is to 2010-03-12 22:58:52 +00:00
ip_ipsec.h Remove ifdefed out part of code, which seems to have originated a decade ago 2009-11-09 19:53:34 +00:00
ip_mroute.c Virtualize the IPv4 multicast routing code. 2010-06-02 15:44:43 +00:00
ip_mroute.h Virtualize the IPv4 multicast routing code. 2010-06-02 15:44:43 +00:00
ip_options.c This patch fixes the problem where proxy ARP entries cannot be added 2010-05-25 20:42:35 +00:00
ip_options.h Add function ip_checkrouteralert(), which will be used 2009-03-04 02:51:22 +00:00
ip_output.c This patch fixes the problem where proxy ARP entries cannot be added 2010-05-25 20:42:35 +00:00
ip_var.h MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
ip.h use u_char instead of u_int for short bitfields. 2010-02-01 14:13:44 +00:00
pim_var.h Virtualize the IPv4 multicast routing code. 2010-06-02 15:44:43 +00:00
pim.h
raw_ip.c Enhance the historic behaviour of raw sockets and jails in a way 2010-04-27 15:07:08 +00:00
sctp_asconf.c * Fix a bug where the length of the ASCONF-ACK was calculated wrong due 2010-06-14 21:25:07 +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 Spacing issues 2010-06-05 21:33:16 +00:00
sctp_auth.h Use [] instead of [0] for flexible arrays. 2010-01-22 07:53:41 +00:00
sctp_bsd_addr.c Spacing issues 2010-06-05 21:33:16 +00:00
sctp_bsd_addr.h This adds back the Iterator to the sctp 2010-05-16 17:03:56 +00:00
sctp_cc_functions.c Bugfix: Use formula from section 7.2.3 of RFC 4960. Reported by Martin Becke. 2009-10-27 18:17:07 +00:00
sctp_cc_functions.h 1) Adds the rest of the VIMAGE change macros 2008-07-09 16:45:30 +00:00
sctp_constants.h 1) Optimize the cleanup and don't always depend on 2010-06-06 20:34:17 +00:00
sctp_crc32.c The proper fix for the delayed SCTP checksum is to 2010-03-12 22:58:52 +00:00
sctp_crc32.h The proper fix for the delayed SCTP checksum is to 2010-03-12 22:58:52 +00:00
sctp_header.h Add missing SCTP_PACKED. Spotted by Irene Ruengeler. 2010-02-13 21:38:15 +00:00
sctp_indata.c PR SCTP Bugs. Basically a full sized frame of 2010-07-29 11:37:04 +00:00
sctp_indata.h * Fix some race condition in SACK/NR-SACK processing. 2010-04-03 15:40:14 +00:00
sctp_input.c Ok, yet another bug in killing off all the hundreds 2010-06-06 19:24:32 +00:00
sctp_input.h 1) Adds the rest of the VIMAGE change macros 2008-07-09 16:45:30 +00:00
sctp_lock_bsd.h 1) Optimize the cleanup and don't always depend on 2010-06-06 20:34:17 +00:00
sctp_os_bsd.h Get rid of support of an old version of the SCTP-AUTH draft. 2010-01-16 20:04:17 +00:00
sctp_os.h
sctp_output.c Fix a bug where endpoints bound to wildcard addresses where 2010-08-05 16:52:13 +00:00
sctp_output.h * Fix some race condition in SACK/NR-SACK processing. 2010-04-03 15:40:14 +00:00
sctp_pcb.c Make sure that we report chunks if a socket 2010-07-26 09:22:52 +00:00
sctp_pcb.h This does two changes: 2010-06-05 21:20:28 +00:00
sctp_peeloff.c
sctp_peeloff.h
sctp_structs.h PR SCTP Bugs. Basically a full sized frame of 2010-07-29 11:37:04 +00:00
sctp_sysctl.c 1) Optimize the cleanup and don't always depend on 2010-06-06 20:34:17 +00:00
sctp_sysctl.h Fix a bug where wrong initialization value 2009-07-28 15:07:41 +00:00
sctp_timer.c PR SCTP Bugs. Basically a full sized frame of 2010-07-29 11:37:04 +00:00
sctp_timer.h Invariants changes that make more sense. 2008-10-27 13:53:31 +00:00
sctp_uio.h Adds the option of keeping per-cpu statistics in SCTP. This 2010-03-24 20:02:40 +00:00
sctp_usrreq.c Fix a rece condition in the shutdown handling. 2010-06-18 09:01:44 +00:00
sctp_var.h * Fix some race condition in SACK/NR-SACK processing. 2010-04-03 15:40:14 +00:00
sctp.h Fix a rece condition in the shutdown handling. 2010-06-18 09:01:44 +00:00
sctputil.c This fixes a crash in SCTP. It was possible to have a 2010-07-03 14:03:31 +00:00
sctputil.h * Fix some race condition in SACK/NR-SACK processing. 2010-04-03 15:40:14 +00:00
siftr.c - Move common code from the hook functions that fills in a packet node struct to 2010-07-18 05:09:10 +00:00
tcp_debug.c Remove the "The option TCPDEBUG requires option INET." requirement. 2009-06-10 10:39:41 +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 MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +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 MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp_lro.c Don't calculate checksum if it has already been validated 2008-08-24 02:31:09 +00:00
tcp_lro.h
tcp_offload.c Merge the remainder of kern_vimage.c and vimage.h into vnet.c and 2009-08-01 19:26:27 +00:00
tcp_offload.h Replace struct tcpopt with a proxy toeopt struct in the TOE driver interface to 2009-07-13 11:51:02 +00:00
tcp_output.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp_reass.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp_sack.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp_seq.h
tcp_subr.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp_syncache.c Fix a bug in syncache where the initial CWND for new incoming connections 2010-07-30 21:45:53 +00:00
tcp_syncache.h Replace struct tcpopt with a proxy toeopt struct in the TOE driver interface to 2009-07-13 11:51:02 +00:00
tcp_timer.c - spread tcp timer callout load evenly across cpus if net.inet.tcp.per_cpu_timers is set to 1 2010-03-20 19:47:30 +00:00
tcp_timer.h Add the ability to see TCP timers via netstat -x. This can be a useful 2009-09-16 05:33:15 +00:00
tcp_timewait.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp_usrreq.c Add a comment to tcp_usr_accept() to indicate why it is we acquire the 2010-03-06 21:38:31 +00:00
tcp_var.h MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
tcp.h use u_char instead of u_int for short bitfields. 2010-02-01 14:13:44 +00:00
tcpip.h
toedev.h Don't check if an interface can do tcp offload if there are no offload devices registered on the system. 2008-09-01 05:30:22 +00:00
udp_usrreq.c MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
udp_var.h MFP4: @176978-176982, 176984, 176990-176994, 177441 2010-04-29 11:52:42 +00:00
udp.h Added support for NAT-Traversal (RFC 3948) in IPsec stack. 2009-06-12 15:44:35 +00:00