From: David Ahern <dsahern@xxxxxxxxx>
Create a helper, ipv4_neigh_table, for retrieving a reference to the arp
table. Add additional wrappers for commonly used neigh_* functions to
avoid propagating the ipv4_neigh_table lookup all over the code.
Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
---
include/net/arp.h | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/include/net/arp.h b/include/net/arp.h
index 977aabfcdc03..7b503bedd9fb 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -10,6 +10,29 @@
extern struct neigh_table arp_tbl;
+static inline struct neigh_table *ipv4_neigh_table(struct net *net)
+{
+ return neigh_find_table(net, AF_INET);
+}
+
+static inline struct neighbour *ipv4_neigh_create(struct net_device *dev,
+ const void *pkey)
+{
+ return neigh_create(ipv4_neigh_table(dev_net(dev)), pkey, dev);
+}
+
+static inline struct neighbour *ipv4_neigh_create_noref(struct net_device *dev,
+ const void *pkey)
+{
+ return __neigh_create(ipv4_neigh_table(dev_net(dev)), pkey, dev, false);
+}
+
+static inline struct neighbour *ipv4_neigh_lookup(struct net_device *dev,
+ void *key)
+{
+ return neigh_lookup(ipv4_neigh_table(dev_net(dev)), key, dev);
+}
+
static inline u32 arp_hashfn(const void *pkey, const struct net_device *dev, u32 *hash_rnd)
{
u32 key = *(const u32 *)pkey;
@@ -23,7 +46,8 @@ static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev
if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
key = INADDR_ANY;
- return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
+ return ___neigh_lookup_noref(ipv4_neigh_table(dev_net(dev)),
+ neigh_key_eq32, arp_hashfn, &key, dev);
}
static inline struct neighbour *__ipv4_neigh_lookup(struct net_device *dev, u32 key)
--
2.11.0
--
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