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authorDavid Ahern <dsa@cumulusnetworks.com>2016-05-07 16:48:59 -0700
committerDavid S. Miller <davem@davemloft.net>2016-05-09 22:33:52 -0400
commit4a65896f94fa82370041823837cd75aac1186b54 (patch)
tree9443898f94aa86d35b0ab4e6369b6d4fe0f69361 /net/l3mdev
parent27c0f739a009971aaf43ee71d9b150a56ee57012 (diff)
downloadlinux-stericsson-4a65896f94fa82370041823837cd75aac1186b54.tar.gz
net: l3mdev: Move get_saddr and rt6_dst
Move l3mdev_rt6_dst_by_oif and l3mdev_get_saddr to l3mdev.c. Collapse l3mdev_get_rt6_dst into l3mdev_rt6_dst_by_oif since it is the only user and keep the l3mdev_get_rt6_dst name for consistency with other hooks. A follow-on patch adds more code to these functions making them long for inlined functions. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l3mdev')
-rw-r--r--net/l3mdev/l3mdev.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/net/l3mdev/l3mdev.c b/net/l3mdev/l3mdev.c
index e925037fa0df..898d01e0f87b 100644
--- a/net/l3mdev/l3mdev.c
+++ b/net/l3mdev/l3mdev.c
@@ -97,3 +97,57 @@ u32 l3mdev_fib_table_by_index(struct net *net, int ifindex)
return tb_id;
}
EXPORT_SYMBOL_GPL(l3mdev_fib_table_by_index);
+
+/**
+ * l3mdev_get_rt6_dst - IPv6 route lookup based on flow. Returns
+ * cached route for L3 master device if relevant
+ * to flow
+ * @net: network namespace for device index lookup
+ * @fl6: IPv6 flow struct for lookup
+ */
+
+struct dst_entry *l3mdev_get_rt6_dst(struct net *net,
+ const struct flowi6 *fl6)
+{
+ struct dst_entry *dst = NULL;
+ struct net_device *dev;
+
+ dev = dev_get_by_index(net, fl6->flowi6_oif);
+ if (dev) {
+ if (netif_is_l3_master(dev) &&
+ dev->l3mdev_ops->l3mdev_get_rt6_dst)
+ dst = dev->l3mdev_ops->l3mdev_get_rt6_dst(dev, fl6);
+ dev_put(dev);
+ }
+
+ return dst;
+}
+EXPORT_SYMBOL_GPL(l3mdev_get_rt6_dst);
+
+/**
+ * l3mdev_get_saddr - get source address for a flow based on an interface
+ * enslaved to an L3 master device
+ * @net: network namespace for device index lookup
+ * @ifindex: Interface index
+ * @fl4: IPv4 flow struct
+ */
+
+int l3mdev_get_saddr(struct net *net, int ifindex, struct flowi4 *fl4)
+{
+ struct net_device *dev;
+ int rc = 0;
+
+ if (ifindex) {
+ rcu_read_lock();
+
+ dev = dev_get_by_index_rcu(net, ifindex);
+ if (dev && netif_is_l3_master(dev) &&
+ dev->l3mdev_ops->l3mdev_get_saddr)
+ rc = dev->l3mdev_ops->l3mdev_get_saddr(dev, fl4);
+
+ rcu_read_unlock();
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(l3mdev_get_saddr);