route.c (f3efbe582b5396d134024c03a5fa253f2a85d9a6) route.c (c6153b5b77650879d78dec76414213c76dd8d574)
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * ROUTE - implementation of the IP router.
7 *
8 * Authors: Ross Biro

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2909 return -EINVAL;
2910 if (get_user(delay, (int __user *)newval))
2911 return -EFAULT;
2912 net = (struct net *)table->extra1;
2913 rt_cache_flush(net, delay);
2914 return 0;
2915}
2916
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * ROUTE - implementation of the IP router.
7 *
8 * Authors: Ross Biro

--- 2900 unchanged lines hidden (view full) ---

2909 return -EINVAL;
2910 if (get_user(delay, (int __user *)newval))
2911 return -EFAULT;
2912 net = (struct net *)table->extra1;
2913 rt_cache_flush(net, delay);
2914 return 0;
2915}
2916
2917static void rt_secret_reschedule(int old)
2918{
2919 struct net *net;
2920 int new = ip_rt_secret_interval;
2921 int diff = new - old;
2922
2923 if (!diff)
2924 return;
2925
2926 rtnl_lock();
2927 for_each_net(net) {
2928 int deleted = del_timer_sync(&net->ipv4.rt_secret_timer);
2929
2930 if (!new)
2931 continue;
2932
2933 if (deleted) {
2934 long time = net->ipv4.rt_secret_timer.expires - jiffies;
2935
2936 if (time <= 0 || (time += diff) <= 0)
2937 time = 0;
2938
2939 net->ipv4.rt_secret_timer.expires = time;
2940 } else
2941 net->ipv4.rt_secret_timer.expires = new;
2942
2943 net->ipv4.rt_secret_timer.expires += jiffies;
2944 add_timer(&net->ipv4.rt_secret_timer);
2945 }
2946 rtnl_unlock();
2947}
2948
2949static int ipv4_sysctl_rt_secret_interval(ctl_table *ctl, int write,
2950 struct file *filp,
2951 void __user *buffer, size_t *lenp,
2952 loff_t *ppos)
2953{
2954 int old = ip_rt_secret_interval;
2955 int ret = proc_dointvec_jiffies(ctl, write, filp, buffer, lenp, ppos);
2956
2957 rt_secret_reschedule(old);
2958
2959 return ret;
2960}
2961
2962static int ipv4_sysctl_rt_secret_interval_strategy(ctl_table *table,
2963 int __user *name,
2964 int nlen,
2965 void __user *oldval,
2966 size_t __user *oldlenp,
2967 void __user *newval,
2968 size_t newlen)
2969{
2970 int old = ip_rt_secret_interval;
2971 int ret = sysctl_jiffies(table, name, nlen, oldval, oldlenp, newval,
2972 newlen);
2973
2974 rt_secret_reschedule(old);
2975
2976 return ret;
2977}
2978
2917static ctl_table ipv4_route_table[] = {
2918 {
2919 .ctl_name = NET_IPV4_ROUTE_GC_THRESH,
2920 .procname = "gc_thresh",
2921 .data = &ipv4_dst_ops.gc_thresh,
2922 .maxlen = sizeof(int),
2923 .mode = 0644,
2924 .proc_handler = &proc_dointvec,

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3043 .proc_handler = &proc_dointvec,
3044 },
3045 {
3046 .ctl_name = NET_IPV4_ROUTE_SECRET_INTERVAL,
3047 .procname = "secret_interval",
3048 .data = &ip_rt_secret_interval,
3049 .maxlen = sizeof(int),
3050 .mode = 0644,
2979static ctl_table ipv4_route_table[] = {
2980 {
2981 .ctl_name = NET_IPV4_ROUTE_GC_THRESH,
2982 .procname = "gc_thresh",
2983 .data = &ipv4_dst_ops.gc_thresh,
2984 .maxlen = sizeof(int),
2985 .mode = 0644,
2986 .proc_handler = &proc_dointvec,

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3105 .proc_handler = &proc_dointvec,
3106 },
3107 {
3108 .ctl_name = NET_IPV4_ROUTE_SECRET_INTERVAL,
3109 .procname = "secret_interval",
3110 .data = &ip_rt_secret_interval,
3111 .maxlen = sizeof(int),
3112 .mode = 0644,
3051 .proc_handler = &proc_dointvec_jiffies,
3052 .strategy = &sysctl_jiffies,
3113 .proc_handler = &ipv4_sysctl_rt_secret_interval,
3114 .strategy = &ipv4_sysctl_rt_secret_interval_strategy,
3053 },
3054 { .ctl_name = 0 }
3055};
3056
3057static __net_initdata struct ctl_path ipv4_route_path[] = {
3058 { .procname = "net", .ctl_name = CTL_NET, },
3059 { .procname = "ipv4", .ctl_name = NET_IPV4, },
3060 { .procname = "route", .ctl_name = NET_IPV4_ROUTE, },

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3121 atomic_set(&net->ipv4.rt_genid,
3122 (int) ((num_physpages ^ (num_physpages>>8)) ^
3123 (jiffies ^ (jiffies >> 7))));
3124
3125 net->ipv4.rt_secret_timer.function = rt_secret_rebuild;
3126 net->ipv4.rt_secret_timer.data = (unsigned long)net;
3127 init_timer_deferrable(&net->ipv4.rt_secret_timer);
3128
3115 },
3116 { .ctl_name = 0 }
3117};
3118
3119static __net_initdata struct ctl_path ipv4_route_path[] = {
3120 { .procname = "net", .ctl_name = CTL_NET, },
3121 { .procname = "ipv4", .ctl_name = NET_IPV4, },
3122 { .procname = "route", .ctl_name = NET_IPV4_ROUTE, },

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3183 atomic_set(&net->ipv4.rt_genid,
3184 (int) ((num_physpages ^ (num_physpages>>8)) ^
3185 (jiffies ^ (jiffies >> 7))));
3186
3187 net->ipv4.rt_secret_timer.function = rt_secret_rebuild;
3188 net->ipv4.rt_secret_timer.data = (unsigned long)net;
3189 init_timer_deferrable(&net->ipv4.rt_secret_timer);
3190
3129 net->ipv4.rt_secret_timer.expires =
3130 jiffies + net_random() % ip_rt_secret_interval +
3131 ip_rt_secret_interval;
3132 add_timer(&net->ipv4.rt_secret_timer);
3191 if (ip_rt_secret_interval) {
3192 net->ipv4.rt_secret_timer.expires =
3193 jiffies + net_random() % ip_rt_secret_interval +
3194 ip_rt_secret_interval;
3195 add_timer(&net->ipv4.rt_secret_timer);
3196 }
3133 return 0;
3134}
3135
3136static __net_exit void rt_secret_timer_exit(struct net *net)
3137{
3138 del_timer_sync(&net->ipv4.rt_secret_timer);
3139}
3140

--- 92 unchanged lines hidden --- 		3197 return 0;
3198}
3199
3200static __net_exit void rt_secret_timer_exit(struct net *net)
3201{
3202 del_timer_sync(&net->ipv4.rt_secret_timer);
3203}
3204

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