lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

net: add limits to ip_default_ttl

Browse Source 
ip_default_ttl should be between 1 and 255

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2010-12-13 12:16:14 -08:00
committed by David S. Miller
parent 8c4877a412
commit 249fab773d
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
net/ipv4/sysctl_net_ipv4.c
View File

@@ -28,6 +28,8 @@ static int ip_local_port_range_min[] = { 1, 1 };
static int ip_local_port_range_max[] = { 65535, 65535 }; static int ip_local_port_range_max[] = { 65535, 65535 };
static int tcp_adv_win_scale_min = -31; 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_max = 255;
/* Update system visible IP port range */ /* Update system visible IP port range */
static void set_local_port_range(int range[2]) static void set_local_port_range(int range[2])
@@ -155,8 +157,9 @@ static struct ctl_table ipv4_table[] = {
.data = &sysctl_ip_default_ttl, .data = &sysctl_ip_default_ttl,
.maxlen = sizeof(int), .maxlen = sizeof(int),
.mode = 0644, .mode = 0644,
.proc_handler = proc_dointvec, .proc_handler = proc_dointvec_minmax,
.extra2 = &init_net, .extra1 = &ip_ttl_min,
.extra2 = &ip_ttl_max,
}, },
{ {
.procname = "ip_no_pmtu_disc", .procname = "ip_no_pmtu_disc",