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/* -*- linux-c -*-
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* sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem.
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*
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* Begun April 1, 1996, Mike Shaver.
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* Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS]
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*/
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#include <linux/mm.h>
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#include <linux/sysctl.h>
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#include <net/ip.h>
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/* From arp.c */
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extern int sysctl_arp_res_time;
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extern int sysctl_arp_dead_res_time;
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extern int sysctl_arp_max_tries;
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extern int sysctl_arp_timeout;
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extern int sysctl_arp_check_interval;
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extern int sysctl_arp_confirm_interval;
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extern int sysctl_arp_confirm_timeout;
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extern int sysctl_ip_forward;
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extern int sysctl_ip_dynaddr;
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static int proc_doipforward(ctl_table *ctl, int write, struct file *filp,
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void *buffer, size_t *lenp)
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{
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int val = sysctl_ip_forward;
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int retv;
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retv = proc_dointvec(ctl, write, filp, buffer, lenp);
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if (write) {
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if (sysctl_ip_forward && !val) {
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printk(KERN_INFO "sysctl: ip forwarding enabled\n");
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ip_statistics.IpForwarding = 1;
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}
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if (!sysctl_ip_forward && val) {
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printk(KERN_INFO "sysctl: ip forwarding off\n");
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ip_statistics.IpForwarding = 2;
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}
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}
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return retv;
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}
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ctl_table ipv4_table[] = {
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{NET_IPV4_ARP_RES_TIME, "arp_res_time",
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&sysctl_arp_res_time, sizeof(int), 0644, NULL, &proc_dointvec},
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{NET_IPV4_ARP_DEAD_RES_TIME, "arp_dead_res_time",
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&sysctl_arp_dead_res_time, sizeof(int), 0644, NULL, &proc_dointvec},
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{NET_IPV4_ARP_MAX_TRIES, "arp_max_tries",
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&sysctl_arp_max_tries, sizeof(int), 0644, NULL, &proc_dointvec},
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{NET_IPV4_ARP_TIMEOUT, "arp_timeout",
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&sysctl_arp_timeout, sizeof(int), 0644, NULL, &proc_dointvec},
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{NET_IPV4_ARP_CHECK_INTERVAL, "arp_check_interval",
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&sysctl_arp_check_interval, sizeof(int), 0644, NULL, &proc_dointvec},
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{NET_IPV4_ARP_CONFIRM_INTERVAL, "arp_confirm_interval",
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&sysctl_arp_confirm_interval, sizeof(int), 0644, NULL,
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&proc_dointvec},
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{NET_IPV4_ARP_CONFIRM_TIMEOUT, "arp_confirm_timeout",
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&sysctl_arp_confirm_timeout, sizeof(int), 0644, NULL,
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&proc_dointvec},
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{NET_IPV4_FORWARD, "ip_forward", &sysctl_ip_forward, sizeof(int),
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0644, NULL, &proc_doipforward },
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{NET_IPV4_DYNADDR, "ip_dynaddr",
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&sysctl_ip_dynaddr, sizeof(int), 0644, NULL, &proc_dointvec},
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{0}
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};
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