[NETNS][IPV6] route6 - make garbage collection work with multiple network namespaces
This patch makes the necessary changes to make IPv6 dst_entry garbage collection work with multiple network namespaces. In ip6_dst_gc(), static local variables are now declared per-namespace. Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Коммит
6891a346c3
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@ -42,6 +42,8 @@ struct netns_ipv6 {
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struct hlist_head *fib_table_hash;
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struct fib6_table *fib6_main_tbl;
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struct dst_ops *ip6_dst_ops;
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unsigned int ip6_rt_gc_expire;
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unsigned long ip6_rt_last_gc;
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#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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struct rt6_info *ip6_prohibit_entry;
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struct rt6_info *ip6_blk_hole_entry;
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@ -992,23 +992,22 @@ int icmp6_dst_gc(int *more)
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static int ip6_dst_gc(struct dst_ops *ops)
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{
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static unsigned expire = 30*HZ;
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static unsigned long last_gc;
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struct net *net = ops->dst_net;
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unsigned long now = jiffies;
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if (time_after(last_gc + init_net.ipv6.sysctl.ip6_rt_gc_min_interval, now) &&
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atomic_read(&init_net.ipv6.ip6_dst_ops->entries) <= init_net.ipv6.sysctl.ip6_rt_max_size)
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if (time_after(net->ipv6.ip6_rt_last_gc + net->ipv6.sysctl.ip6_rt_gc_min_interval, now) &&
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atomic_read(&net->ipv6.ip6_dst_ops->entries) <= net->ipv6.sysctl.ip6_rt_max_size)
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goto out;
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expire++;
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fib6_run_gc(expire, &init_net);
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last_gc = now;
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if (atomic_read(&init_net.ipv6.ip6_dst_ops->entries) < init_net.ipv6.ip6_dst_ops->gc_thresh)
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expire = init_net.ipv6.sysctl.ip6_rt_gc_timeout>>1;
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net->ipv6.ip6_rt_gc_expire++;
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fib6_run_gc(net->ipv6.ip6_rt_gc_expire, net);
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net->ipv6.ip6_rt_last_gc = now;
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if (atomic_read(&net->ipv6.ip6_dst_ops->entries) < net->ipv6.ip6_dst_ops->gc_thresh)
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net->ipv6.ip6_rt_gc_expire = net->ipv6.sysctl.ip6_rt_gc_timeout>>1;
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out:
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expire -= expire>>init_net.ipv6.sysctl.ip6_rt_gc_elasticity;
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return (atomic_read(&init_net.ipv6.ip6_dst_ops->entries) > init_net.ipv6.sysctl.ip6_rt_max_size);
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net->ipv6.ip6_rt_gc_expire -= net->ipv6.ip6_rt_gc_expire>>net->ipv6.sysctl.ip6_rt_gc_elasticity;
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return (atomic_read(&net->ipv6.ip6_dst_ops->entries) > net->ipv6.sysctl.ip6_rt_max_size);
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}
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/* Clean host part of a prefix. Not necessary in radix tree,
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@ -2615,6 +2614,8 @@ static int ip6_route_net_init(struct net *net)
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proc_net_fops_create(net, "ipv6_route", 0, &ipv6_route_proc_fops);
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proc_net_fops_create(net, "rt6_stats", S_IRUGO, &rt6_stats_seq_fops);
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#endif
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net->ipv6.ip6_rt_gc_expire = 30*HZ;
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ret = 0;
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out:
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return ret;
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