Messages in this thread Patch in this message | | | Date | Mon, 12 May 2014 02:32:59 +0200 | From | Willy Tarreau <> | Subject | [ 059/143] sysctl net: Keep tcp_syn_retries inside the boundary |
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2.6.32-longterm review patch. If anyone has any objections, please let me know.
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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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