[lkml]   [2010]   [Feb]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    Subject[net-next PATCH v6 0/3] net: reserve ports for applications using fixed port numbers
    This patch introduces /proc/sys/net/ipv4/ip_local_reserved_ports which
    allows users to reserve ports for third-party applications.

    The reserved ports will not be used by automatic port assignments
    (e.g. when calling connect() or bind() with port number 0). Explicit
    port allocation behavior is unchanged.

    Changes from the previous version:
    - be more strict on accepted input (only comma separators, no spaces allowed)
    - add to the docs a paragraph about ip_local_port_range and
    ip_local_reserved_ports relationship
    - fix a few corner cases with parsing

    There are still some miss behaviors with regard to proc parsing in odd
    invalid cases (for "40000\0-40001" all is acknowledged but only 40000
    is accepted) but they are not easy to fix without changing the current
    "acknowledge how much we accepted" behavior.

    Because of that and because the same issues are present in the
    existing proc_dointvec code as well I don't think its worth holding
    the actual feature (port reservation) after such petty error recovery

    For the sake of discussion, I think Eric was right: the model we are
    using is messy, we should only accept all input or none. If we can
    (ABI implications) and you think its worth switching to this model I
    can give it a try in a future patch.

    Octavian Purdila (3):
    sysctl: refactor integer handling proc code
    sysctl: add proc_do_large_bitmap
    net: reserve ports for applications using fixed port numbers

    Documentation/networking/ip-sysctl.txt | 31 ++
    drivers/infiniband/core/cma.c | 7 +-
    include/linux/sysctl.h | 2 +
    include/net/ip.h | 6 +
    kernel/sysctl.c | 504 ++++++++++++++++++++++----------
    net/ipv4/af_inet.c | 8 +-
    net/ipv4/inet_connection_sock.c | 6 +
    net/ipv4/inet_hashtables.c | 2 +
    net/ipv4/sysctl_net_ipv4.c | 17 +
    net/ipv4/udp.c | 3 +-
    net/sctp/socket.c | 2 +
    11 files changed, 431 insertions(+), 157 deletions(-)

     \ /
      Last update: 2010-02-27 02:27    [W:0.024 / U:37.924 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site