diff options
| author |   Ido Schimmel <idosch@mellanox.com> | 2017-08-03 13:28:14 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-08-03 15:35:59 -0700 |
| commit | 1b2a4440858857f2f93bb2ec5bb3a60f4fcc25be (patch) | |
| tree | c21cbae70c8a580cf3ddf76cc735d6f5f8f78dd9 /include/net/fib_rules.h | |
| parent | rocker: Ignore address families other than IPv4 (diff) | |
| download | linux-dev-1b2a4440858857f2f93bb2ec5bb3a60f4fcc25be.tar.xz linux-dev-1b2a4440858857f2f93bb2ec5bb3a60f4fcc25be.zip | |
net: fib_rules: Implement notification logic in core
Unlike the routing tables, the FIB rules share a common core, so instead
of replicating the same logic for each address family we can simply dump
the rules and send notifications from the core itself.
To protect the integrity of the dump, a rules-specific sequence counter
is added for each address family and incremented whenever a rule is
added or deleted (under RTNL).
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/net/fib_rules.h')
| -rw-r--r-- | include/net/fib_rules.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h index c487bfa2f479..3d7f1cefc6f5 100644 --- a/include/net/fib_rules.h +++ b/include/net/fib_rules.h @@ -8,6 +8,7 @@ #include <linux/refcount.h> #include <net/flow.h> #include <net/rtnetlink.h> +#include <net/fib_notifier.h> struct fib_kuid_range { kuid_t start; @@ -57,6 +58,7 @@ struct fib_rules_ops { int addr_size; int unresolved_rules; int nr_goto_rules; + unsigned int fib_rules_seq; int (*action)(struct fib_rule *, struct flowi *, int, @@ -89,6 +91,11 @@ struct fib_rules_ops { struct rcu_head rcu; }; +struct fib_rule_notifier_info { + struct fib_notifier_info info; /* must be first */ + struct fib_rule *rule; +}; + #define FRA_GENERIC_POLICY \ [FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ [FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \ @@ -143,6 +150,8 @@ int fib_rules_lookup(struct fib_rules_ops *, struct flowi *, int flags, int fib_default_rule_add(struct fib_rules_ops *, u32 pref, u32 table, u32 flags); bool fib_rule_matchall(const struct fib_rule *rule); +int fib_rules_dump(struct net *net, struct notifier_block *nb, int family); +unsigned int fib_rules_seq_read(struct net *net, int family); int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack); |