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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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7c550daffe
Currently all users of FIB notifier only cares about events in init_net. Later in this patchset, users get interested in other namespaces too. However, for every registered block user is interested only about one namespace. Make the FIB notifier registration per-netns and avoid unnecessary calls of notifier block for other namespaces. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
#include <linux/notifier.h>
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#include <linux/socket.h>
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <net/net_namespace.h>
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#include <net/fib_notifier.h>
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#include <net/netns/ipv6.h>
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#include <net/ip6_fib.h>
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int call_fib6_notifier(struct notifier_block *nb,
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enum fib_event_type event_type,
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struct fib_notifier_info *info)
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{
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info->family = AF_INET6;
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return call_fib_notifier(nb, event_type, info);
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}
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int call_fib6_notifiers(struct net *net, enum fib_event_type event_type,
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struct fib_notifier_info *info)
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{
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info->family = AF_INET6;
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return call_fib_notifiers(net, event_type, info);
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}
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static unsigned int fib6_seq_read(struct net *net)
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{
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return fib6_tables_seq_read(net) + fib6_rules_seq_read(net);
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}
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static int fib6_dump(struct net *net, struct notifier_block *nb)
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{
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int err;
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err = fib6_rules_dump(net, nb);
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if (err)
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return err;
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return fib6_tables_dump(net, nb);
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}
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static const struct fib_notifier_ops fib6_notifier_ops_template = {
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.family = AF_INET6,
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.fib_seq_read = fib6_seq_read,
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.fib_dump = fib6_dump,
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.owner = THIS_MODULE,
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};
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int __net_init fib6_notifier_init(struct net *net)
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{
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struct fib_notifier_ops *ops;
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ops = fib_notifier_ops_register(&fib6_notifier_ops_template, net);
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if (IS_ERR(ops))
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return PTR_ERR(ops);
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net->ipv6.notifier_ops = ops;
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return 0;
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}
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void __net_exit fib6_notifier_exit(struct net *net)
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{
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fib_notifier_ops_unregister(net->ipv6.notifier_ops);
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}
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