diff options
Diffstat (limited to 'include/linux/mroute_base.h')
| -rw-r--r-- | include/linux/mroute_base.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/include/linux/mroute_base.h b/include/linux/mroute_base.h index c2560cb50f1d..d617fe45543e 100644 --- a/include/linux/mroute_base.h +++ b/include/linux/mroute_base.h @@ -6,6 +6,7 @@ #include <linux/spinlock.h> #include <net/net_namespace.h> #include <net/sock.h> +#include <net/fib_notifier.h> /** * struct vif_device - interface representor for multicast routing @@ -36,6 +37,58 @@ struct vif_device { __be32 local, remote; }; +struct vif_entry_notifier_info { + struct fib_notifier_info info; + struct net_device *dev; + unsigned short vif_index; + unsigned short vif_flags; + u32 tb_id; +}; + +static inline int mr_call_vif_notifier(struct notifier_block *nb, + struct net *net, + unsigned short family, + enum fib_event_type event_type, + struct vif_device *vif, + unsigned short vif_index, u32 tb_id) +{ + struct vif_entry_notifier_info info = { + .info = { + .family = family, + .net = net, + }, + .dev = vif->dev, + .vif_index = vif_index, + .vif_flags = vif->flags, + .tb_id = tb_id, + }; + + return call_fib_notifier(nb, net, event_type, &info.info); +} + +static inline int mr_call_vif_notifiers(struct net *net, + unsigned short family, + enum fib_event_type event_type, + struct vif_device *vif, + unsigned short vif_index, u32 tb_id, + unsigned int *ipmr_seq) +{ + struct vif_entry_notifier_info info = { + .info = { + .family = family, + .net = net, + }, + .dev = vif->dev, + .vif_index = vif_index, + .vif_flags = vif->flags, + .tb_id = tb_id, + }; + + ASSERT_RTNL(); + (*ipmr_seq)++; + return call_fib_notifiers(net, event_type, &info.info); +} + #ifndef MAXVIFS /* This one is nasty; value is defined in uapi using different symbols for * mroute and morute6 but both map into same 32. @@ -72,6 +125,7 @@ enum { * @refcount: reference count for this entry * @list: global entry list * @rcu: used for entry destruction + * @free: Operation used for freeing an entry under RCU */ struct mr_mfc { struct rhlist_head mnode; @@ -97,8 +151,64 @@ struct mr_mfc { } mfc_un; struct list_head list; struct rcu_head rcu; + void (*free)(struct rcu_head *head); +}; + +static inline void mr_cache_put(struct mr_mfc *c) +{ + if (refcount_dec_and_test(&c->mfc_un.res.refcount)) + call_rcu(&c->rcu, c->free); +} + +static inline void mr_cache_hold(struct mr_mfc *c) +{ + refcount_inc(&c->mfc_un.res.refcount); +} + +struct mfc_entry_notifier_info { + struct fib_notifier_info info; + struct mr_mfc *mfc; + u32 tb_id; }; +static inline int mr_call_mfc_notifier(struct notifier_block *nb, + struct net *net, + unsigned short family, + enum fib_event_type event_type, + struct mr_mfc *mfc, u32 tb_id) +{ + struct mfc_entry_notifier_info info = { + .info = { + .family = family, + .net = net, + }, + .mfc = mfc, + .tb_id = tb_id + }; + + return call_fib_notifier(nb, net, event_type, &info.info); +} + +static inline int mr_call_mfc_notifiers(struct net *net, + unsigned short family, + enum fib_event_type event_type, + struct mr_mfc *mfc, u32 tb_id, + unsigned int *ipmr_seq) +{ + struct mfc_entry_notifier_info info = { + .info = { + .family = family, + .net = net, + }, + .mfc = mfc, + .tb_id = tb_id + }; + + ASSERT_RTNL(); + (*ipmr_seq)++; + return call_fib_notifiers(net, event_type, &info.info); +} + struct mr_table; /** @@ -180,6 +290,13 @@ int mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb, u32 portid, u32 seq, struct mr_mfc *c, int cmd, int flags), spinlock_t *lock); + +int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family, + int (*rules_dump)(struct net *net, + struct notifier_block *nb), + struct mr_table *(*mr_iter)(struct net *net, + struct mr_table *mrt), + rwlock_t *mrt_lock); #else static inline void vif_device_init(struct vif_device *v, struct net_device *dev, @@ -236,6 +353,17 @@ mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb, { return -EINVAL; } + +static inline int mr_dump(struct net *net, struct notifier_block *nb, + unsigned short family, + int (*rules_dump)(struct net *net, + struct notifier_block *nb), + struct mr_table *(*mr_iter)(struct net *net, + struct mr_table *mrt), + rwlock_t *mrt_lock) +{ + return -EINVAL; +} #endif static inline void *mr_mfc_find(struct mr_table *mrt, void *hasharg) |