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7b0eb22b1d
kernel_optimize_test/net/ipv4
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Ilpo Järvinen 7b0eb22b1d [TCP] FRTO: Use Disorder state during operation instead of Open 
Retransmission counter assumptions are to be changed. Forcing
reason to do this exist: Using sysctl in check would be racy
as soon as FRTO starts to ignore some ACKs (doing that in the
following patches). Userspace may disable it at any moment
giving nice oops if timing is right. frto_counter would be
inaccessible from userspace, but with SACK enhanced FRTO
retrans_out can include other than head, and possibly leaving
it non-zero after spurious RTO, boom again.

Luckily, solution seems rather simple: never go directly to Open
state but use Disorder instead. This does not really change much,
since TCP could anyway change its state to Disorder during FRTO
using path tcp_fastretrans_alert -> tcp_try_to_open (e.g., when
a SACK block makes ACK dubious). Besides, Disorder seems to be
the state where TCP should be if not recovering (in Recovery or
Loss state) while having some retransmissions in-flight (see
tcp_try_to_open), which is exactly what happens with FRTO.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:23:05 -07:00
..
ipvs [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
netfilter [NETFILTER] arp_tables: Fix unaligned accesses. 2007-04-13 16:37:54 -07:00
af_inet.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
ah4.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
arp.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
cipso_ipv4.c [NetLabel]: parse the CIPSO ranged tag on incoming packets 2007-03-12 14:38:02 -07:00
datagram.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
devinet.c [IPV4]: Fix rtm_to_ifaddr() error handling. 2007-03-09 13:43:24 -08:00
esp4.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
fib_frontend.c [NETLINK]: Infinite recursion in netlink. 2007-04-25 13:07:28 -07:00
fib_hash.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
fib_lookup.h [IPV4]: net/ipv4/fib annotations 2006-09-28 18:02:23 -07:00
fib_rules.c [NET]: Fix fib_rules compatibility breakage 2007-03-25 18:48:00 -07:00
fib_semantics.c [IPv4] fib: Fix out of bound access of fib_props[] 2007-03-25 18:48:03 -07:00
fib_trie.c [IPV4] fib_trie: Document locking. 2007-03-26 14:22:22 -07:00
icmp.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
igmp.c [IPV4]: Fix warning in ip_mc_rejoin_group. 2007-03-12 17:02:37 -07:00
inet_connection_sock.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
inet_diag.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
inet_hashtables.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
inet_timewait_sock.c [NET]: change layout of ehash table 2007-02-08 14:16:46 -08:00
inetpeer.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ip_forward.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ip_fragment.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
ip_gre.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ip_input.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
ip_options.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
ip_output.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ip_sockglue.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ipcomp.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
ipconfig.c [PATCH] mark struct file_operations const 7 2007-02-12 09:48:46 -08:00
ipip.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ipmr.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
Kconfig [IPV4]: Correct links in net/ipv4/Kconfig 2007-02-26 11:42:51 -08:00
Makefile [NET]: Supporting UDP-Lite (RFC 3828) in Linux 2006-12-02 21:22:46 -08:00
multipath_drr.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
multipath_random.c [IPV4]: Use random32() in net/ipv4/multipath 2007-02-26 11:43:00 -08:00
multipath_rr.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
multipath_wrandom.c [IPV4]: Use random32() in net/ipv4/multipath 2007-02-26 11:43:00 -08:00
multipath.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
netfilter.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
proc.c [PATCH] mark struct file_operations const 7 2007-02-12 09:48:46 -08:00
protocol.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
raw.c [PATCH] mark struct file_operations const 7 2007-02-12 09:48:46 -08:00
route.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
syncookies.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
sysctl_net_ipv4.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
tcp_bic.c [TCP] tcp_bic: use BUILD_BUG_ON 2006-09-22 15:18:04 -07:00
tcp_cong.c [TCP]: Congestion control initialization. 2007-04-23 22:32:11 -07:00
tcp_cubic.c [TCP]: Use read mostly for CUBIC parameters. 2007-02-12 13:15:20 -08:00
tcp_diag.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_highspeed.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
tcp_htcp.c [TCP]: cleanup of htcp (resend) 2007-02-12 13:34:03 -08:00
tcp_hybla.c [TCP] Congestion control (modulo lp, bic): use BUILD_BUG_ON 2006-09-22 15:18:13 -07:00
tcp_input.c [TCP] FRTO: Use Disorder state during operation instead of Open 2007-04-25 22:23:05 -07:00
tcp_ipv4.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
tcp_lp.c [TCP] tcp-lp: prevent chance for oops 2006-09-28 18:03:07 -07:00
tcp_minisocks.c [TCP]: Fix minisock tcp_create_openreq_child() typo. 2007-02-28 11:05:56 -08:00
tcp_output.c [TCP]: slow_start_after_idle should influence cwnd validation too 2007-04-09 13:31:15 -07:00
tcp_probe.c [PATCH] mark struct file_operations const 7 2007-02-12 09:48:46 -08:00
tcp_scalable.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tcp_timer.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
tcp_vegas.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
tcp_veno.c [TCP] Congestion control (modulo lp, bic): use BUILD_BUG_ON 2006-09-22 15:18:13 -07:00
tcp_westwood.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
tcp.c [TCP]: Fix tcp_mem[] initialization. 2007-03-16 15:04:03 -07:00
tunnel4.c [IPSEC]: Changing API of xfrm4_tunnel_register. 2007-02-13 12:54:47 -08:00
udp_impl.h [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
udp.c [UDP]: Reread uh pointer after pskb_trim 2007-03-07 16:08:04 -08:00
udplite.c [NET]: Possible cleanups. 2006-12-02 21:31:51 -08:00
xfrm4_input.c [IPSEC]: Changing API of xfrm4_tunnel_register. 2007-02-13 12:54:47 -08:00
xfrm4_mode_beet.c [XFRM]: beet: fix pseudo header length value 2007-04-23 22:39:02 -07:00
xfrm4_mode_transport.c [IPSEC]: output mode to take an xfrm state as input param 2006-09-22 15:18:48 -07:00
xfrm4_mode_tunnel.c [XFRM_TUNNEL]: Reload header pointer after pskb_may_pull/pskb_expand_head 2007-02-26 11:43:01 -08:00
xfrm4_output.c [NET] IPV4: Fix whitespace errors. 2007-02-10 23:19:39 -08:00
xfrm4_policy.c [XFRM]: Fix oops in xfrm4_dst_destroy() 2007-02-26 12:10:32 -08:00
xfrm4_state.c [IPSEC]: exporting xfrm_state_afinfo 2007-02-08 12:39:00 -08:00
xfrm4_tunnel.c [IPSEC]: Changing API of xfrm4_tunnel_register. 2007-02-13 12:54:47 -08:00