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fib: introduce FIB notification infrastructure

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This allows to pass information about added/deleted FIB entries/rules to
whoever is interested. This is done in a very similar way as devinet
notifies address additions/removals.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2016-09-26 12:52:29 +02:00
committed by David S. Miller
parent eb523f42d7
commit b90eb75494
4 changed files with 108 additions and 14 deletions
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10
net/ipv4/fib_rules.c
View File

@@ -164,6 +164,14 @@ static struct fib_table *fib_empty_table(struct net *net)
return NULL;
}
static int call_fib_rule_notifiers(struct net *net,
enum fib_event_type event_type)
{
struct fib_notifier_info info;
return call_fib_notifiers(net, event_type, &info);
}
static const struct nla_policy fib4_rule_policy[FRA_MAX+1] = {
FRA_GENERIC_POLICY,
[FRA_FLOW] = { .type = NLA_U32 },
@@ -221,6 +229,7 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
net->ipv4.fib_has_custom_rules = true;
fib_flush_external(rule->fr_net);
call_fib_rule_notifiers(net, FIB_EVENT_RULE_ADD);
err = 0;
errout:
@@ -243,6 +252,7 @@ static int fib4_rule_delete(struct fib_rule *rule)
#endif
net->ipv4.fib_has_custom_rules = true;
fib_flush_external(rule->fr_net);
call_fib_rule_notifiers(net, FIB_EVENT_RULE_DEL);
errout:
return err;
}