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7354c8c389
linux/net/ipv4
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Florian Westphal 7354c8c389 net: tcp: split ack slow/fast events from cwnd_event 
The congestion control ops "cwnd_event" currently supports
CA_EVENT_FAST_ACK and CA_EVENT_SLOW_ACK events (among others).
Both FAST and SLOW_ACK are only used by Westwood congestion
control algorithm.

This removes both flags from cwnd_event and adds a new
in_ack_event callback for this. The goal is to be able to
provide more detailed information about ACKs, such as whether
ECE flag was set, or whether the ACK resulted in a window
update.

It is required for DataCenter TCP (DCTCP) congestion control
algorithm as it makes a different choice depending on ECE being
set or not.

Joint work with Daniel Borkmann and Glenn Judd.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Glenn Judd <glenn.judd@morganstanley.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-29 00:13:10 -04:00
..
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2014-09-10 12:46:32 -07:00
af_inet.c net: Remove gso_send_check as an offload callback 2014-09-26 00:22:47 -04:00
ah4.c ipsec: Remove obsolete MAX_AH_AUTH_LEN 2014-09-18 10:54:36 +02:00
arp.c arp: Do not perturb drop profiles with ignored ARP packets 2014-09-28 17:30:35 -04:00
cipso_ipv4.c netlabel: shorter names for the NetLabel catmap funcs/structs 2014-08-01 11:17:37 -04:00
datagram.c net: Save TX flow hash in sock and set in skbuf on xmit 2014-07-07 21:14:21 -07:00
devinet.c ipv4: fail early when creating netdev named all or default 2014-07-29 11:43:50 -07:00
esp4.c
fib_frontend.c ipv4: Restore accept_local behaviour in fib_validate_source() 2014-08-22 12:23:10 -07:00
fib_lookup.h
fib_rules.c
fib_semantics.c ipv4: fix a race in update_or_create_fnhe() 2014-09-05 17:15:50 -07:00
fib_trie.c list: fix order of arguments for hlist_add_after(_rcu) 2014-08-06 18:01:24 -07:00
fou.c fou: Add GRO support 2014-09-19 17:15:31 -04:00
gre_demux.c net: Fix GRE RX to use skb_transport_header for GRE header offset 2014-09-08 15:23:05 -07:00
gre_offload.c net: Remove gso_send_check as an offload callback 2014-09-26 00:22:47 -04:00
icmp.c icmp: add a global rate limitation 2014-09-23 12:47:38 -04:00
igmp.c ipv4: implement igmp_qrv sysctl to tune igmp robustness variable 2014-09-04 22:26:14 -07:00
inet_connection_sock.c
inet_diag.c
inet_fragment.c inet: frags: use kmem_cache for inet_frag_queue 2014-08-02 15:31:31 -07:00
inet_hashtables.c net: use reciprocal_scale() helper 2014-08-23 12:21:21 -07:00
inet_lro.c
inet_timewait_sock.c
inetpeer.c inet: remove dead inetpeer sequence code 2014-09-08 16:42:42 -07:00
ip_forward.c
ip_fragment.c inet: frags: use kmem_cache for inet_frag_queue 2014-08-02 15:31:31 -07:00
ip_gre.c gre: Setup and TX path for gre/UDP foo-over-udp encapsulation 2014-09-19 17:15:32 -04:00
ip_input.c
ip_options.c ipv4: rename ip_options_echo to __ip_options_echo() 2014-09-28 16:35:42 -04:00
ip_output.c ipv4: rename ip_options_echo to __ip_options_echo() 2014-09-28 16:35:42 -04:00
ip_sockglue.c ipv4: rcu cleanup in ip_ra_control() 2014-09-09 20:10:44 -07:00
ip_tunnel_core.c net: Support for multiple checksums with gso 2014-06-04 22:46:38 -07:00
ip_tunnel.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-09-23 12:09:27 -04:00
ip_vti.c vti: Simplify error handling in module init and exit 2014-06-26 08:21:57 +02:00
ipcomp.c
ipconfig.c ipconfig: Use time_before 2014-08-22 12:23:11 -07:00
ipip.c ipip: Setup and TX path for ipip/UDP foo-over-udp encapsulation 2014-09-19 17:15:32 -04:00
ipmr.c net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
Kconfig fou: Support for foo-over-udp RX path 2014-09-19 17:15:31 -04:00
Makefile fou: Support for foo-over-udp RX path 2014-09-19 17:15:31 -04:00
netfilter.c
ping.c net/ipv4: bind ip_nonlocal_bind to current netns 2014-09-09 11:27:09 -07:00
proc.c inet: frag: don't account number of fragment queues 2014-07-27 22:34:36 -07:00
protocol.c net: Export inet_offloads and inet6_offloads 2014-09-19 17:15:31 -04:00
raw.c ipv4: Make IP_MULTICAST_ALL and IP_MSFILTER work on raw sockets 2014-07-23 15:13:26 -07:00
route.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-09-23 12:09:27 -04:00
syncookies.c tcp: syncookies: mark cookie_secret read_mostly 2014-08-27 16:30:49 -07:00
sysctl_net_ipv4.c icmp: add a global rate limitation 2014-09-23 12:47:38 -04:00
tcp_bic.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_cong.c net: tcp: assign tcp cong_ops when tcp sk is created 2014-09-29 00:13:10 -04:00
tcp_cubic.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_diag.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_fastopen.c tcp: remove unnecessary tcp_sk assignment. 2014-06-16 21:35:00 -07:00
tcp_highspeed.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_htcp.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_hybla.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_illinois.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_input.c net: tcp: split ack slow/fast events from cwnd_event 2014-09-29 00:13:10 -04:00
tcp_ipv4.c tcp: better TCP_SKB_CB layout to reduce cache line misses 2014-09-28 16:35:43 -04:00
tcp_lp.c
tcp_memcontrol.c cgroup: replace cgroup_add_cftypes() with cgroup_add_legacy_cftypes() 2014-07-15 11:05:09 -04:00
tcp_metrics.c tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic 2014-08-14 14:38:54 -07:00
tcp_minisocks.c net: tcp: assign tcp cong_ops when tcp sk is created 2014-09-29 00:13:10 -04:00
tcp_offload.c net: Remove gso_send_check as an offload callback 2014-09-26 00:22:47 -04:00
tcp_output.c net: tcp: add flag for ca to indicate that ECN is required 2014-09-29 00:13:10 -04:00
tcp_probe.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_scalable.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_timer.c tcp: avoid possible arithmetic overflows 2014-09-22 16:27:10 -04:00
tcp_vegas.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_vegas.h
tcp_veno.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp_westwood.c net: tcp: split ack slow/fast events from cwnd_event 2014-09-29 00:13:10 -04:00
tcp_yeah.c tcp: whitespace fixes 2014-09-01 18:12:45 -07:00
tcp.c net: tcp: assign tcp cong_ops when tcp sk is created 2014-09-29 00:13:10 -04:00
tunnel4.c
udp_diag.c
udp_impl.h
udp_offload.c net: Remove gso_send_check as an offload callback 2014-09-26 00:22:47 -04:00
udp_tunnel.c udp-tunnel: Add a few more UDP tunnel APIs 2014-09-19 15:57:15 -04:00
udp.c net: merge cases where sock_efree and sock_edemux are the same function 2014-09-05 17:43:45 -07:00
udplite.c net: Eliminate no_check from protosw 2014-05-23 16:28:53 -04:00
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c inetpeer: get rid of ip_id_count 2014-06-02 11:00:41 -07:00
xfrm4_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-05-24 00:32:30 -04:00
xfrm4_policy.c
xfrm4_protocol.c xfrm4: Remove duplicate semicolon 2014-06-30 07:49:47 +02:00
xfrm4_state.c
xfrm4_tunnel.c