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    Subject[ 059/143] sysctl net: Keep tcp_syn_retries inside the boundary
    2.6.32-longterm review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Michal Tesar <mtesar@redhat.com>

    [ Upstream commit 651e92716aaae60fc41b9652f54cb6803896e0da ]

    Limit the min/max value passed to the
    /proc/sys/net/ipv4/tcp_syn_retries.

    Signed-off-by: Michal Tesar <mtesar@redhat.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Willy Tarreau <w@1wt.eu>
    ---
    net/ipv4/sysctl_net_ipv4.c | 6 +++++-
    1 file changed, 5 insertions(+), 1 deletion(-)

    diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
    index 2dcf04d..910fa54 100644
    --- a/net/ipv4/sysctl_net_ipv4.c
    +++ b/net/ipv4/sysctl_net_ipv4.c
    @@ -23,6 +23,8 @@

    static int zero;
    static int tcp_retr1_max = 255;
    +static int tcp_syn_retries_min = 1;
    +static int tcp_syn_retries_max = MAX_TCP_SYNCNT;
    static int ip_local_port_range_min[] = { 1, 1 };
    static int ip_local_port_range_max[] = { 65535, 65535 };

    @@ -237,7 +239,9 @@ static struct ctl_table ipv4_table[] = {
    .data = &ipv4_config.no_pmtu_disc,
    .maxlen = sizeof(int),
    .mode = 0644,
    - .proc_handler = proc_dointvec
    + .proc_handler = proc_dointvec_minmax,
    + .extra1 = &tcp_syn_retries_min,
    + .extra2 = &tcp_syn_retries_max
    },
    {
    .ctl_name = NET_IPV4_NONLOCAL_BIND,
    --
    1.7.12.2.21.g234cd45.dirty




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