Eric Lee / smarc-fsl-linux-kernel

02 Nov, 2017

1 commit

  • b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

    Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

12 May, 2016

1 commit

  • 756ee1729   tcp: replace cnt & rtt with struct in pkts_acked() ... Browse Code »

    Replace 2 arguments (cnt and rtt) in the congestion control modules'
    pkts_acked() function with a struct. This will allow adding more
    information without having to modify existing congestion control
    modules (tcp_nv in particular needs bytes in flight when packet
    was sent).

    As proposed by Neal Cardwell in his comments to the tcp_nv patch.

    Signed-off-by: Lawrence Brakmo
    Acked-by: Yuchung Cheng
    Signed-off-by: David S. Miller

    Lawrence Brakmo
     

30 Apr, 2015

1 commit

  • 64f40ff5b   tcp: prepare CC get_info() access from getsockopt() ... Browse Code »

    We would like that optional info provided by Congestion Control
    modules using netlink can also be read using getsockopt()

    This patch changes get_info() to put this information in a buffer,
    instead of skb, like tcp_get_info(), so that following patch
    can reuse this common infrastructure.

    Signed-off-by: Eric Dumazet
    Cc: Yuchung Cheng
    Cc: Neal Cardwell
    Acked-by: Neal Cardwell
    Acked-by: Daniel Borkmann
    Acked-by: Yuchung Cheng
    Signed-off-by: David S. Miller

    Eric Dumazet
     

18 Apr, 2015

1 commit

  • 521f1cf1d   inet_diag: fix access to tcp cc information ... Browse Code »

    Two different problems are fixed here :

    1) inet_sk_diag_fill() might be called without socket lock held.
    icsk->icsk_ca_ops can change under us and module be unloaded.
    -> Access to freed memory.
    Fix this using rcu_read_lock() to prevent module unload.

    2) Some TCP Congestion Control modules provide information
    but again this is not safe against icsk->icsk_ca_ops
    change and nla_put() errors were ignored. Some sockets
    could not get the additional info if skb was almost full.

    Fix this by returning a status from get_info() handlers and
    using rcu protection as well.

    Signed-off-by: Eric Dumazet
    Acked-by: Daniel Borkmann
    Signed-off-by: David S. Miller

    Eric Dumazet
     

20 Oct, 2013

1 commit

  • 7e58487b8   net: ipv4/ipv6: Remove extern from function prototypes ... Browse Code »

    There are a mix of function prototypes with and without extern
    in the kernel sources. Standardize on not using extern for
    function prototypes.

    Function prototypes don't need to be written with extern.
    extern is assumed by the compiler. Its use is as unnecessary as
    using auto to declare automatic/local variables in a block.

    Signed-off-by: Joe Perches
    Signed-off-by: David S. Miller

    Joe Perches
     

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
     

26 Apr, 2007

1 commit