diff options
Diffstat (limited to 'include/net/l3mdev.h')
| -rw-r--r-- | include/net/l3mdev.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h index 87cee05a0a17..44a19a171104 100644 --- a/include/net/l3mdev.h +++ b/include/net/l3mdev.h @@ -17,12 +17,16 @@ * @l3mdev_fib_table: Get FIB table id to use for lookups * * @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device + * + * @l3mdev_get_saddr: Get source address for a flow */ struct l3mdev_ops { u32 (*l3mdev_fib_table)(const struct net_device *dev); struct rtable * (*l3mdev_get_rtable)(const struct net_device *dev, const struct flowi4 *fl4); + void (*l3mdev_get_saddr)(struct net_device *dev, + struct flowi4 *fl4); }; #ifdef CONFIG_NET_L3_MASTER_DEV @@ -100,6 +104,25 @@ static inline bool netif_index_is_l3_master(struct net *net, int ifindex) return rc; } +static inline void l3mdev_get_saddr(struct net *net, int ifindex, + struct flowi4 *fl4) +{ + struct net_device *dev; + + 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) { + dev->l3mdev_ops->l3mdev_get_saddr(dev, fl4); + } + + rcu_read_unlock(); + } +} + #else static inline int l3mdev_master_ifindex_rcu(struct net_device *dev) @@ -144,6 +167,10 @@ static inline bool netif_index_is_l3_master(struct net *net, int ifindex) return false; } +static inline void l3mdev_get_saddr(struct net *net, int ifindex, + struct flowi4 *fl4) +{ +} #endif #endif /* _NET_L3MDEV_H_ */ |