path: root/net/ipv4/fib_rules.c
diff options
authorIdo Schimmel <idosch@mellanox.com>2017-08-03 13:28:11 +0200
committerDavid S. Miller <davem@davemloft.net>2017-08-03 15:35:59 -0700
commit04b1d4e50e82536c12da00ee04a77510c459c844 (patch)
tree5d2ebb0704b4f1af4b5a3c8811e60d07c6482971 /net/ipv4/fib_rules.c
parentMerge branch 'mvpp2-add-TX-interrupts-support' (diff)
net: core: Make the FIB notification chain generic
The FIB notification chain is currently soley used by IPv4 code. However, we're going to introduce IPv6 FIB offload support, which requires these notification as well. As explained in commit c3852ef7f2f8 ("ipv4: fib: Replay events when registering FIB notifier"), upon registration to the chain, the callee receives a full dump of the FIB tables and rules by traversing all the net namespaces. The integrity of the dump is ensured by a per-namespace sequence counter that is incremented whenever a change to the tables or rules occurs. In order to allow more address families to use the chain, each family is expected to register its fib_notifier_ops in its pernet init. These operations allow the common code to read the family's sequence counter as well as dump its tables and rules in the given net namespace. Additionally, a 'family' parameter is added to sent notifications, so that listeners could distinguish between the different families. Implement the common code that allows listeners to register to the chain and for address families to register their fib_notifier_ops. Subsequent patches will implement these operations in IPv6. In the future, ipmr and ip6mr will be extended to provide these notifications as well. 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 'net/ipv4/fib_rules.c')
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 778ecf977eb2..acdbf5a24ac9 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -32,6 +32,7 @@
#include <net/tcp.h>
#include <net/ip_fib.h>
#include <net/fib_rules.h>
+#include <net/fib_notifier.h>
struct fib4_rule {
struct fib_rule common;
@@ -193,7 +194,7 @@ static int call_fib_rule_notifier(struct notifier_block *nb, struct net *net,
.rule = rule,
- return call_fib_notifier(nb, net, event_type, &info.info);
+ return call_fib4_notifier(nb, net, event_type, &info.info);
static int call_fib_rule_notifiers(struct net *net,
@@ -204,7 +205,7 @@ static int call_fib_rule_notifiers(struct net *net,
.rule = rule,
- return call_fib_notifiers(net, event_type, &info.info);
+ return call_fib4_notifiers(net, event_type, &info.info);
/* Called with rcu_read_lock() */