Eric Lee / smarc-fsl-linux-kernel

10 Mar, 2011

1 commit

02 Mar, 2009

1 commit

  • 758ce5c8d   tcp: add helper for AI algorithm ... Browse Code »

    It seems that implementation in yeah was inconsistent to what
    other did as it would increase cwnd one ack earlier than the
    others do.

    Size benefits:

    bictcp_cong_avoid | -36
    tcp_cong_avoid_ai | +52
    bictcp_cong_avoid | -34
    tcp_scalable_cong_avoid | -36
    tcp_veno_cong_avoid | -12
    tcp_yeah_cong_avoid | -38

    = -104 bytes total

    Signed-off-by: Ilpo Järvinen
    Signed-off-by: David S. Miller

    Ilpo Järvinen
     

29 Feb, 2008

1 commit

29 Jan, 2008

1 commit

11 Oct, 2007

1 commit

31 Jul, 2007

1 commit

  • 30cfd0baf   [TCP]: congestion control API pass RTT in microseconds ... Browse Code »

    This patch changes the API for the callback that is done after an ACK is
    received. It solves a couple of issues:

    * Some congestion controls want higher resolution value of RTT
    (controlled by TCP_CONG_RTT_SAMPLE flag). These don't really want a ktime, but
    all compute a RTT in microseconds.

    * Other congestion control could use RTT at jiffies resolution.

    To keep API consistent the units should be the same for both cases, just the
    resolution should change.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

18 Jul, 2007

1 commit

13 Jun, 2007

1 commit

26 Apr, 2007

1 commit

  • 164891aad   [TCP]: Congestion control API update. ... Browse Code »

    Do some simple changes to make congestion control API faster/cleaner.
    * use ktime_t rather than timeval
    * merge rtt sampling into existing ack callback
    this means one indirect call versus two per ack.
    * use flags bits to store options/settings

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

23 Sep, 2006

1 commit

01 Jul, 2006

1 commit

18 Jun, 2006

1 commit

  • 72dc5b922   [TCP]: Minimum congestion window consolidation. ... Browse Code »

    Many of the TCP congestion methods all just use ssthresh
    as the minimum congestion window on decrease. Rather than
    duplicating the code, just have that be the default if that
    handle in the ops structure is not set.

    Minor behaviour change to TCP compound. It probably wants
    to use this (ssthresh) as lower bound, rather than ssthresh/2
    because the latter causes undershoot on loss.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

04 Jan, 2006

2 commits

11 Nov, 2005

2 commits

  • 7faffa1c7   [TCP]: add tcp_slow_start helper ... Browse Code »

    Move all the code that does linear TCP slowstart to one
    inline function to ease later patch to add ABC support.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger
     
  • f4805eded   [TCP]: fix congestion window update when using TSO deferal ... Browse Code »

    TCP peformance with TSO over networks with delay is awful.
    On a 100Mbit link with 150ms delay, we get 4Mbits/sec with TSO and
    50Mbits/sec without TSO.

    The problem is with TSO, we intentionally do not keep the maximum
    number of packets in flight to fill the window, we hold out to until
    we can send a MSS chunk. But, we also don't update the congestion window
    unless we have filled, as per RFC2861.

    This patch replaces the check for the congestion window being full
    with something smarter that accounts for TSO.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

03 Nov, 2005

1 commit

  • 450b5b189   [TCP]: BIC max increment too large ... Browse Code »

    The max growth of BIC TCP is too large. Original code was based on
    BIC 1.0 and the default there was 32. Later code (2.6.13) included
    compensation for delayed acks, and should have reduced the default
    value to 16; since normally TCP gets one ack for every two packets sent.

    The current value of 32 makes BIC too aggressive and unfair to other
    flows.

    Submitted-by: Injong Rhee
    Signed-off-by: Stephen Hemminger
    Acked-by: Ian McDonald
    Signed-off-by: Arnaldo Carvalho de Melo

    Stephen Hemminger
     

06 Oct, 2005

1 commit

30 Aug, 2005

1 commit

  • 6687e988d   [ICSK]: Move TCP congestion avoidance members to icsk ... Browse Code »

    This changeset basically moves tcp_sk()->{ca_ops,ca_state,etc} to inet_csk(),
    minimal renaming/moving done in this changeset to ease review.

    Most of it is just changes of struct tcp_sock * to struct sock * parameters.

    With this we move to a state closer to two interesting goals:

    1. Generalisation of net/ipv4/tcp_diag.c, becoming inet_diag.c, being used
    for any INET transport protocol that has struct inet_hashinfo and are
    derived from struct inet_connection_sock. Keeps the userspace API, that will
    just not display DCCP sockets, while newer versions of tools can support
    DCCP.

    2. INET generic transport pluggable Congestion Avoidance infrastructure, using
    the current TCP CA infrastructure with DCCP.

    Signed-off-by: Arnaldo Carvalho de Melo
    Signed-off-by: David S. Miller

    Arnaldo Carvalho de Melo
     

24 Jun, 2005

1 commit

  • 83803034f   [TCP]: Add TCP BIC congestion control module. ... Browse Code »

    TCP BIC congestion control reworked to use the new congestion control
    infrastructure. This version is more up to date than the BIC
    code in 2.6.12; it incorporates enhancements from BICTCP 1.1,
    to handle low latency links.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger