* [PATCH v2] sysctl net: Keep tcp_syn_retries inside the boundary
@ 2013-07-19 12:09 Michal Tesar
2013-07-20 0:37 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Michal Tesar @ 2013-07-19 12:09 UTC (permalink / raw)
To: davem; +Cc: kuznet, jmorris, yoshfuji, kaber, netdev, linux-kernel
Limit the min/max value passed to the
/proc/sys/net/ipv4/tcp_syn_retries.
Signed-off-by: Michal Tesar <mtesar@redhat.com>
---
net/ipv4/sysctl_net_ipv4.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index b2c123c..610e324 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -36,6 +36,8 @@ static int tcp_adv_win_scale_min = -31;
static int tcp_adv_win_scale_max = 31;
static int ip_ttl_min = 1;
static int ip_ttl_max = 255;
+static int tcp_syn_retries_min = 1;
+static int tcp_syn_retries_max = MAX_TCP_SYNCNT;
static int ip_ping_group_range_min[] = { 0, 0 };
static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
@@ -332,7 +334,9 @@ static struct ctl_table ipv4_table[] = {
.data = &sysctl_tcp_syn_retries,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &tcp_syn_retries_min,
+ .extra2 = &tcp_syn_retries_max
},
{
.procname = "tcp_synack_retries",
--
1.7.7.6
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] sysctl net: Keep tcp_syn_retries inside the boundary
2013-07-19 12:09 [PATCH v2] sysctl net: Keep tcp_syn_retries inside the boundary Michal Tesar
@ 2013-07-20 0:37 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2013-07-20 0:37 UTC (permalink / raw)
To: mtesar; +Cc: kuznet, jmorris, yoshfuji, kaber, netdev, linux-kernel
From: Michal Tesar <mtesar@redhat.com>
Date: Fri, 19 Jul 2013 14:09:01 +0200
> Limit the min/max value passed to the
> /proc/sys/net/ipv4/tcp_syn_retries.
>
> Signed-off-by: Michal Tesar <mtesar@redhat.com>
Applied and queued up for -stable.
^ permalink raw reply [flat|nested] 2+ messages in thread
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