diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2017-08-03 13:28:18 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-04 00:36:00 +0200 |
| commit | dcb18f762f6ac83a6dc9cdc26dd694dcc167beb7 (patch) | |
| tree | fad7aaa2d2aac7cb2db4908987cf0da97e9c25a7 /include | |
| parent | ipv6: fib: Add in-kernel notifications for route add / delete (diff) | |
| download | linux-dcb18f762f6ac83a6dc9cdc26dd694dcc167beb7.tar.xz linux-dcb18f762f6ac83a6dc9cdc26dd694dcc167beb7.zip | |
ipv6: fib_rules: Dump rules during registration to FIB chain
Allow users of the FIB notification chain to receive a complete view of
the IPv6 FIB rules upon registration to the chain.
The integrity of the dump is ensured by a per-family sequence counter
that is incremented (under RTNL) whenever a rule is added or deleted.
All the sequence counters are read (under RTNL) and summed, prior and
after the dump. In case the counters differ, then the dump is either
restarted or the registration fails.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ip6_fib.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index e2b292b79e99..dbe5537809f5 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -312,6 +312,8 @@ void __net_exit fib6_notifier_exit(struct net *net); int fib6_rules_init(void); void fib6_rules_cleanup(void); bool fib6_rule_default(const struct fib_rule *rule); +int fib6_rules_dump(struct net *net, struct notifier_block *nb); +unsigned int fib6_rules_seq_read(struct net *net); #else static inline int fib6_rules_init(void) { @@ -325,5 +327,13 @@ static inline bool fib6_rule_default(const struct fib_rule *rule) { return true; } +static inline int fib6_rules_dump(struct net *net, struct notifier_block *nb) +{ + return 0; +} +static inline unsigned int fib6_rules_seq_read(struct net *net) +{ + return 0; +} #endif #endif |