Commit 651e9271 authored by Michal Tesar's avatar Michal Tesar Committed by David S. Miller

sysctl net: Keep tcp_syn_retries inside the boundary

Limit the min/max value passed to the
/proc/sys/net/ipv4/tcp_syn_retries.
Signed-off-by: default avatarMichal Tesar <mtesar@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 087d273c
...@@ -36,6 +36,8 @@ static int tcp_adv_win_scale_min = -31; ...@@ -36,6 +36,8 @@ static int tcp_adv_win_scale_min = -31;
static int tcp_adv_win_scale_max = 31; static int tcp_adv_win_scale_max = 31;
static int ip_ttl_min = 1; static int ip_ttl_min = 1;
static int ip_ttl_max = 255; 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_min[] = { 0, 0 };
static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
...@@ -332,7 +334,9 @@ static struct ctl_table ipv4_table[] = { ...@@ -332,7 +334,9 @@ static struct ctl_table ipv4_table[] = {
.data = &sysctl_tcp_syn_retries, .data = &sysctl_tcp_syn_retries,
.maxlen = sizeof(int), .maxlen = sizeof(int),
.mode = 0644, .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", .procname = "tcp_synack_retries",
......
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