Commit 0a6fa23d authored by Eric W. Biederman's avatar Eric W. Biederman Committed by David S. Miller

ipv4: Use math to point per net sysctls into the appropriate struct net.

Simplify maintenance of ipv4_net_table by using math to point the per
net sysctls into the appropriate struct net, instead of manually
reassinging all of the variables into hard coded table slots.
Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2e685cad
......@@ -838,28 +838,15 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
table = ipv4_net_table;
if (!net_eq(net, &init_net)) {
int i;
table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL);
if (table == NULL)
goto err_alloc;
table[0].data =
&net->ipv4.sysctl_icmp_echo_ignore_all;
table[1].data =
&net->ipv4.sysctl_icmp_echo_ignore_broadcasts;
table[2].data =
&net->ipv4.sysctl_icmp_ignore_bogus_error_responses;
table[3].data =
&net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr;
table[4].data =
&net->ipv4.sysctl_icmp_ratelimit;
table[5].data =
&net->ipv4.sysctl_icmp_ratemask;
table[6].data =
&net->ipv4.sysctl_ping_group_range;
table[7].data =
&net->ipv4.sysctl_tcp_ecn;
table[8].data =
&net->ipv4.sysctl_local_ports.range;
/* Update the variables to point into the current struct net */
for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++)
table[i].data += (void *)net - (void *)&init_net;
/* Don't export sysctls to unprivileged users */
if (net->user_ns != &init_user_ns)
......
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