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3687b1dc6f
linux/net/ipv4
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Wei Yongjun 3687b1dc6f [TCP]: SNMPv2 tcpAttemptFails counter error 
Refer to RFC2012, tcpAttemptFails is defined as following:
  tcpAttemptFails OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
              "The number of times TCP connections have made a direct
              transition to the CLOSED state from either the SYN-SENT
              state or the SYN-RCVD state, plus the number of times TCP
              connections have made a direct transition to the LISTEN
              state from the SYN-RCVD state."
      ::= { tcp 7 }

When I lookup into RFC793, I found that the state change should occured
under following condition:
  1. SYN-SENT -> CLOSED
     a) Received ACK,RST segment when SYN-SENT state.

  2. SYN-RCVD -> CLOSED
     b) Received SYN segment when SYN-RCVD state(came from LISTEN).
     c) Received RST segment when SYN-RCVD state(came from SYN-SENT).
     d) Received SYN segment when SYN-RCVD state(came from SYN-SENT).

  3. SYN-RCVD -> LISTEN
     e) Received RST segment when SYN-RCVD state(came from LISTEN).

In my test, those direct state transition can not be counted to
tcpAttemptFails.

Signed-off-by: Wei Yongjun <yjwei@nanjing-fnst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-02 13:38:19 -07:00
..
ipvs [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
netfilter [NETFILTER]: SNMP NAT: fix byteorder confusion 2006-07-24 22:53:35 -07:00
af_inet.c [NET] gso: Fix up GSO packets with broken checksums 2006-07-08 13:34:56 -07:00
ah4.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
arp.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
datagram.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
devinet.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
esp4.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
fib_frontend.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fib_hash.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
fib_lookup.h [IPV4]: Prepare FIB core for RCU. 2005-08-29 16:08:31 -07:00
fib_rules.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
fib_semantics.c [IPV4]: Fix nexthop realm dumping for multipath routes 2006-07-21 15:09:55 -07:00
fib_trie.c [IPV4]: Fix error handling for fib_insert_node call 2006-07-12 13:59:04 -07:00
icmp.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
igmp.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
inet_connection_sock.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
inet_diag.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
inet_hashtables.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
inet_timewait_sock.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
inetpeer.c [IPV4] inetpeer: Get rid of volatile from peer_total 2006-07-10 14:50:30 -07:00
ip_forward.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ip_fragment.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ip_gre.c [IPV4]: Get rid of redundant IPCB->opts initialisation 2006-07-21 14:29:53 -07:00
ip_input.c [IPV4]: Clear the whole IPCB, this clears also IPCB(skb)->flags. 2006-07-24 23:45:16 -07:00
ip_options.c [IPV4]: Get rid of redundant IPCB->opts initialisation 2006-07-21 14:29:53 -07:00
ip_output.c [NET] gso: Add skb_is_gso 2006-07-08 13:34:32 -07:00
ip_sockglue.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ipcomp.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
ipconfig.c [NET]: Convert RTNL to mutex. 2006-03-20 22:23:58 -08:00
ipip.c [IPV4]: Get rid of redundant IPCB->opts initialisation 2006-07-21 14:29:53 -07:00
ipmr.c [IPV4] ipmr: ip multicast route bug fix. 2006-07-25 16:45:12 -07:00
Kconfig [TCP]: Remove TCP Compound 2006-07-10 14:50:35 -07:00
Makefile [TCP]: Remove TCP Compound 2006-07-10 14:50:35 -07:00
multipath_drr.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
multipath_random.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
multipath_rr.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
multipath_wrandom.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
multipath.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
netfilter.c [NETFILTER]: Add address family specific checksum helpers 2006-04-09 22:25:41 -07:00
proc.c [PATCH] for_each_possible_cpu: network codes 2006-04-11 06:18:31 -07:00
protocol.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
raw.c [IPV4/IPV6]: Setting 0 for unused port field in RAW IP recvmsg(). 2006-07-25 17:05:35 -07:00
route.c [PATCH] lockdep: fix RT_HASH_LOCK_SZ 2006-07-03 15:27:05 -07:00
syncookies.c [ICSK]: Rename struct tcp_func to struct inet_connection_sock_af_ops 2006-01-03 13:10:38 -08:00
sysctl_net_ipv4.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_bic.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_cong.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_cubic.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_diag.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_highspeed.c [TCP] tcp_highspeed: Fix AI updates. 2006-07-12 13:58:50 -07:00
tcp_htcp.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_hybla.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_input.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_ipv4.c [TCP]: SNMPv2 tcpAttemptFails counter error 2006-08-02 13:38:19 -07:00
tcp_lp.c [TCP]: TCP Low Priority congestion control 2006-06-17 21:29:21 -07:00
tcp_minisocks.c [TCP]: SNMPv2 tcpAttemptFails counter error 2006-08-02 13:38:19 -07:00
tcp_output.c [NET]: Generalise TSO-specific bits from skb_setup_caps 2006-06-30 14:12:08 -07:00
tcp_probe.c [TCP]: fix memory leak in net/ipv4/tcp_probe.c::tcpprobe_read() 2006-08-02 13:38:18 -07:00
tcp_scalable.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_timer.c [TCP]: MTU probing 2006-03-20 17:53:41 -08:00
tcp_vegas.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_veno.c [TCP]: Minimum congestion window consolidation. 2006-06-17 21:29:29 -07:00
tcp_westwood.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp.c [NET]: Verify gso_type too in gso_segment 2006-07-03 19:38:35 -07:00
tunnel4.c [INET]: Move no-tunnel ICMP error to tunnel4/tunnel6 2006-04-09 22:25:25 -07:00
udp.c [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
xfrm4_input.c [IPSEC] xfrm: Abstract out encapsulation modes 2006-06-17 21:28:39 -07:00
xfrm4_mode_transport.c [IPSEC] proto: Move transport mode input path into xfrm_mode_transport 2006-06-17 21:28:41 -07:00
xfrm4_mode_tunnel.c [IPV4]: Get rid of redundant IPCB->opts initialisation 2006-07-21 14:29:53 -07:00
xfrm4_output.c [NET] gso: Add skb_is_gso 2006-07-08 13:34:32 -07:00
xfrm4_policy.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
xfrm4_state.c [IPSEC] xfrm: Undo afinfo lock proliferation 2006-06-17 21:28:37 -07:00
xfrm4_tunnel.c [IPSEC]: Kill unused decap state argument 2006-04-01 00:52:46 -08:00