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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-12-13 23:16:14 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-13 23:16:14 +0300 |
| commit | 249fab773dd5f689318c969ed649c4db077cdfc3 (patch) | |
| tree | cd4a07a03e262b682b31929e5b194158979e3b46 /net | |
| parent | 8c4877a4128e7931077b024a891a4b284d8756a3 (diff) | |
| download | linux-249fab773dd5f689318c969ed649c4db077cdfc3.tar.xz | |
net: add limits to ip_default_ttl
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index e85ff5930607..1a456652086b 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -28,6 +28,8 @@ static int ip_local_port_range_min[] = { 1, 1 }; static int ip_local_port_range_max[] = { 65535, 65535 }; 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; /* Update system visible IP port range */ static void set_local_port_range(int range[2]) @@ -155,8 +157,9 @@ static struct ctl_table ipv4_table[] = { .data = &sysctl_ip_default_ttl, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec, - .extra2 = &init_net, + .proc_handler = proc_dointvec_minmax, + .extra1 = &ip_ttl_min, + .extra2 = &ip_ttl_max, }, { .procname = "ip_no_pmtu_disc", |