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-rw-r--r--include/net/l3mdev.h153
1 files changed, 55 insertions, 98 deletions
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h
index e90095091aa0..b220dabeab45 100644
--- a/include/net/l3mdev.h
+++ b/include/net/l3mdev.h
@@ -11,6 +11,7 @@
#ifndef _NET_L3MDEV_H_
#define _NET_L3MDEV_H_
+#include <net/dst.h>
#include <net/fib_rules.h>
/**
@@ -18,30 +19,24 @@
*
* @l3mdev_fib_table: Get FIB table id to use for lookups
*
- * @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device
+ * @l3mdev_l3_rcv: Hook in L3 receive path
*
- * @l3mdev_get_saddr: Get source address for a flow
+ * @l3mdev_l3_out: Hook in L3 output path
*
- * @l3mdev_get_rt6_dst: Get cached IPv6 rt6_info (dst_entry) for device
+ * @l3mdev_link_scope_lookup: IPv6 lookup for linklocal and mcast destinations
*/
struct l3mdev_ops {
u32 (*l3mdev_fib_table)(const struct net_device *dev);
struct sk_buff * (*l3mdev_l3_rcv)(struct net_device *dev,
struct sk_buff *skb, u16 proto);
-
- /* IPv4 ops */
- struct rtable * (*l3mdev_get_rtable)(const struct net_device *dev,
- const struct flowi4 *fl4);
- int (*l3mdev_get_saddr)(struct net_device *dev,
- struct flowi4 *fl4);
+ struct sk_buff * (*l3mdev_l3_out)(struct net_device *dev,
+ struct sock *sk, struct sk_buff *skb,
+ u16 proto);
/* IPv6 ops */
- struct dst_entry * (*l3mdev_get_rt6_dst)(const struct net_device *dev,
+ struct dst_entry * (*l3mdev_link_scope_lookup)(const struct net_device *dev,
struct flowi6 *fl6);
- int (*l3mdev_get_saddr6)(struct net_device *dev,
- const struct sock *sk,
- struct flowi6 *fl6);
};
#ifdef CONFIG_NET_L3_MASTER_DEV
@@ -49,6 +44,8 @@ struct l3mdev_ops {
int l3mdev_fib_rule_match(struct net *net, struct flowi *fl,
struct fib_lookup_arg *arg);
+void l3mdev_update_flow(struct net *net, struct flowi *fl);
+
int l3mdev_master_ifindex_rcu(const struct net_device *dev);
static inline int l3mdev_master_ifindex(struct net_device *dev)
{
@@ -80,7 +77,7 @@ static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex)
}
static inline
-const struct net_device *l3mdev_master_dev_rcu(const struct net_device *_dev)
+struct net_device *l3mdev_master_dev_rcu(const struct net_device *_dev)
{
/* netdev_master_upper_dev_get_rcu calls
* list_first_or_null_rcu to walk the upper dev list.
@@ -89,7 +86,7 @@ const struct net_device *l3mdev_master_dev_rcu(const struct net_device *_dev)
* typecast to remove the const
*/
struct net_device *dev = (struct net_device *)_dev;
- const struct net_device *master;
+ struct net_device *master;
if (!dev)
return NULL;
@@ -104,26 +101,6 @@ const struct net_device *l3mdev_master_dev_rcu(const struct net_device *_dev)
return master;
}
-/* get index of an interface to use for FIB lookups. For devices
- * enslaved to an L3 master device FIB lookups are based on the
- * master index
- */
-static inline int l3mdev_fib_oif_rcu(struct net_device *dev)
-{
- return l3mdev_master_ifindex_rcu(dev) ? : dev->ifindex;
-}
-
-static inline int l3mdev_fib_oif(struct net_device *dev)
-{
- int oif;
-
- rcu_read_lock();
- oif = l3mdev_fib_oif_rcu(dev);
- rcu_read_unlock();
-
- return oif;
-}
-
u32 l3mdev_fib_table_rcu(const struct net_device *dev);
u32 l3mdev_fib_table_by_index(struct net *net, int ifindex);
static inline u32 l3mdev_fib_table(const struct net_device *dev)
@@ -137,39 +114,7 @@ static inline u32 l3mdev_fib_table(const struct net_device *dev)
return tb_id;
}
-static inline struct rtable *l3mdev_get_rtable(const struct net_device *dev,
- const struct flowi4 *fl4)
-{
- if (netif_is_l3_master(dev) && dev->l3mdev_ops->l3mdev_get_rtable)
- return dev->l3mdev_ops->l3mdev_get_rtable(dev, fl4);
-
- return NULL;
-}
-
-static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
-{
- struct net_device *dev;
- bool rc = false;
-
- if (ifindex == 0)
- return false;
-
- rcu_read_lock();
-
- dev = dev_get_by_index_rcu(net, ifindex);
- if (dev)
- rc = netif_is_l3_master(dev);
-
- rcu_read_unlock();
-
- return rc;
-}
-
-int l3mdev_get_saddr(struct net *net, int ifindex, struct flowi4 *fl4);
-
-struct dst_entry *l3mdev_get_rt6_dst(struct net *net, struct flowi6 *fl6);
-int l3mdev_get_saddr6(struct net *net, const struct sock *sk,
- struct flowi6 *fl6);
+struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6);
static inline
struct sk_buff *l3mdev_l3_rcv(struct sk_buff *skb, u16 proto)
@@ -199,6 +144,34 @@ struct sk_buff *l3mdev_ip6_rcv(struct sk_buff *skb)
return l3mdev_l3_rcv(skb, AF_INET6);
}
+static inline
+struct sk_buff *l3mdev_l3_out(struct sock *sk, struct sk_buff *skb, u16 proto)
+{
+ struct net_device *dev = skb_dst(skb)->dev;
+
+ if (netif_is_l3_slave(dev)) {
+ struct net_device *master;
+
+ master = netdev_master_upper_dev_get_rcu(dev);
+ if (master && master->l3mdev_ops->l3mdev_l3_out)
+ skb = master->l3mdev_ops->l3mdev_l3_out(master, sk,
+ skb, proto);
+ }
+
+ return skb;
+}
+
+static inline
+struct sk_buff *l3mdev_ip_out(struct sock *sk, struct sk_buff *skb)
+{
+ return l3mdev_l3_out(sk, skb, AF_INET);
+}
+
+static inline
+struct sk_buff *l3mdev_ip6_out(struct sock *sk, struct sk_buff *skb)
+{
+ return l3mdev_l3_out(sk, skb, AF_INET6);
+}
#else
static inline int l3mdev_master_ifindex_rcu(const struct net_device *dev)
@@ -216,20 +189,11 @@ static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex)
}
static inline
-const struct net_device *l3mdev_master_dev_rcu(const struct net_device *dev)
+struct net_device *l3mdev_master_dev_rcu(const struct net_device *dev)
{
return NULL;
}
-static inline int l3mdev_fib_oif_rcu(struct net_device *dev)
-{
- return dev ? dev->ifindex : 0;
-}
-static inline int l3mdev_fib_oif(struct net_device *dev)
-{
- return dev ? dev->ifindex : 0;
-}
-
static inline u32 l3mdev_fib_table_rcu(const struct net_device *dev)
{
return 0;
@@ -243,43 +207,32 @@ static inline u32 l3mdev_fib_table_by_index(struct net *net, int ifindex)
return 0;
}
-static inline struct rtable *l3mdev_get_rtable(const struct net_device *dev,
- const struct flowi4 *fl4)
+static inline
+struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6)
{
return NULL;
}
-static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
-{
- return false;
-}
-
-static inline int l3mdev_get_saddr(struct net *net, int ifindex,
- struct flowi4 *fl4)
-{
- return 0;
-}
-
static inline
-struct dst_entry *l3mdev_get_rt6_dst(struct net *net, struct flowi6 *fl6)
+struct sk_buff *l3mdev_ip_rcv(struct sk_buff *skb)
{
- return NULL;
+ return skb;
}
-static inline int l3mdev_get_saddr6(struct net *net, const struct sock *sk,
- struct flowi6 *fl6)
+static inline
+struct sk_buff *l3mdev_ip6_rcv(struct sk_buff *skb)
{
- return 0;
+ return skb;
}
static inline
-struct sk_buff *l3mdev_ip_rcv(struct sk_buff *skb)
+struct sk_buff *l3mdev_ip_out(struct sock *sk, struct sk_buff *skb)
{
return skb;
}
static inline
-struct sk_buff *l3mdev_ip6_rcv(struct sk_buff *skb)
+struct sk_buff *l3mdev_ip6_out(struct sock *sk, struct sk_buff *skb)
{
return skb;
}
@@ -290,6 +243,10 @@ int l3mdev_fib_rule_match(struct net *net, struct flowi *fl,
{
return 1;
}
+static inline
+void l3mdev_update_flow(struct net *net, struct flowi *fl)
+{
+}
#endif
#endif /* _NET_L3MDEV_H_ */