16853f21fSYuval Mintz #ifndef __LINUX_MROUTE_BASE_H 26853f21fSYuval Mintz #define __LINUX_MROUTE_BASE_H 36853f21fSYuval Mintz 46853f21fSYuval Mintz #include <linux/netdevice.h> 50eb71a9dSNeilBrown #include <linux/rhashtable-types.h> 6c8d61968SYuval Mintz #include <linux/spinlock.h> 7b70432f7SYuval Mintz #include <net/net_namespace.h> 8b70432f7SYuval Mintz #include <net/sock.h> 9bc67a0daSYuval Mintz #include <net/fib_notifier.h> 10cb167893SDavid Ahern #include <net/ip_fib.h> 116853f21fSYuval Mintz 126853f21fSYuval Mintz /** 136853f21fSYuval Mintz * struct vif_device - interface representor for multicast routing 146853f21fSYuval Mintz * @dev: network device being used 156853f21fSYuval Mintz * @bytes_in: statistic; bytes ingressing 166853f21fSYuval Mintz * @bytes_out: statistic; bytes egresing 176853f21fSYuval Mintz * @pkt_in: statistic; packets ingressing 186853f21fSYuval Mintz * @pkt_out: statistic; packets egressing 196853f21fSYuval Mintz * @rate_limit: Traffic shaping (NI) 206853f21fSYuval Mintz * @threshold: TTL threshold 216853f21fSYuval Mintz * @flags: Control flags 226853f21fSYuval Mintz * @link: Physical interface index 236853f21fSYuval Mintz * @dev_parent_id: device parent id 246853f21fSYuval Mintz * @local: Local address 256853f21fSYuval Mintz * @remote: Remote address for tunnels 266853f21fSYuval Mintz */ 276853f21fSYuval Mintz struct vif_device { 286853f21fSYuval Mintz struct net_device *dev; 296853f21fSYuval Mintz unsigned long bytes_in, bytes_out; 306853f21fSYuval Mintz unsigned long pkt_in, pkt_out; 316853f21fSYuval Mintz unsigned long rate_limit; 326853f21fSYuval Mintz unsigned char threshold; 336853f21fSYuval Mintz unsigned short flags; 346853f21fSYuval Mintz int link; 356853f21fSYuval Mintz 366853f21fSYuval Mintz /* Currently only used by ipmr */ 376853f21fSYuval Mintz struct netdev_phys_item_id dev_parent_id; 386853f21fSYuval Mintz __be32 local, remote; 396853f21fSYuval Mintz }; 406853f21fSYuval Mintz 41bc67a0daSYuval Mintz struct vif_entry_notifier_info { 42bc67a0daSYuval Mintz struct fib_notifier_info info; 43bc67a0daSYuval Mintz struct net_device *dev; 44bc67a0daSYuval Mintz unsigned short vif_index; 45bc67a0daSYuval Mintz unsigned short vif_flags; 46bc67a0daSYuval Mintz u32 tb_id; 47bc67a0daSYuval Mintz }; 48bc67a0daSYuval Mintz 49bc67a0daSYuval Mintz static inline int mr_call_vif_notifier(struct notifier_block *nb, 50bc67a0daSYuval Mintz unsigned short family, 51bc67a0daSYuval Mintz enum fib_event_type event_type, 52bc67a0daSYuval Mintz struct vif_device *vif, 53*b7a59557SJiri Pirko unsigned short vif_index, u32 tb_id, 54*b7a59557SJiri Pirko struct netlink_ext_ack *extack) 55bc67a0daSYuval Mintz { 56bc67a0daSYuval Mintz struct vif_entry_notifier_info info = { 57bc67a0daSYuval Mintz .info = { 58bc67a0daSYuval Mintz .family = family, 59*b7a59557SJiri Pirko .extack = extack, 60bc67a0daSYuval Mintz }, 61bc67a0daSYuval Mintz .dev = vif->dev, 62bc67a0daSYuval Mintz .vif_index = vif_index, 63bc67a0daSYuval Mintz .vif_flags = vif->flags, 64bc67a0daSYuval Mintz .tb_id = tb_id, 65bc67a0daSYuval Mintz }; 66bc67a0daSYuval Mintz 677c550dafSJiri Pirko return call_fib_notifier(nb, event_type, &info.info); 68bc67a0daSYuval Mintz } 69bc67a0daSYuval Mintz 70bc67a0daSYuval Mintz static inline int mr_call_vif_notifiers(struct net *net, 71bc67a0daSYuval Mintz unsigned short family, 72bc67a0daSYuval Mintz enum fib_event_type event_type, 73bc67a0daSYuval Mintz struct vif_device *vif, 74bc67a0daSYuval Mintz unsigned short vif_index, u32 tb_id, 75bc67a0daSYuval Mintz unsigned int *ipmr_seq) 76bc67a0daSYuval Mintz { 77bc67a0daSYuval Mintz struct vif_entry_notifier_info info = { 78bc67a0daSYuval Mintz .info = { 79bc67a0daSYuval Mintz .family = family, 80bc67a0daSYuval Mintz }, 81bc67a0daSYuval Mintz .dev = vif->dev, 82bc67a0daSYuval Mintz .vif_index = vif_index, 83bc67a0daSYuval Mintz .vif_flags = vif->flags, 84bc67a0daSYuval Mintz .tb_id = tb_id, 85bc67a0daSYuval Mintz }; 86bc67a0daSYuval Mintz 87bc67a0daSYuval Mintz ASSERT_RTNL(); 88bc67a0daSYuval Mintz (*ipmr_seq)++; 89bc67a0daSYuval Mintz return call_fib_notifiers(net, event_type, &info.info); 90bc67a0daSYuval Mintz } 91bc67a0daSYuval Mintz 92b70432f7SYuval Mintz #ifndef MAXVIFS 93b70432f7SYuval Mintz /* This one is nasty; value is defined in uapi using different symbols for 94b70432f7SYuval Mintz * mroute and morute6 but both map into same 32. 95b70432f7SYuval Mintz */ 96b70432f7SYuval Mintz #define MAXVIFS 32 97b70432f7SYuval Mintz #endif 98b70432f7SYuval Mintz 99b70432f7SYuval Mintz #define VIF_EXISTS(_mrt, _idx) (!!((_mrt)->vif_table[_idx].dev)) 100b70432f7SYuval Mintz 101889cd83cSYuval Mintz /* mfc_flags: 102889cd83cSYuval Mintz * MFC_STATIC - the entry was added statically (not by a routing daemon) 103889cd83cSYuval Mintz * MFC_OFFLOAD - the entry was offloaded to the hardware 104889cd83cSYuval Mintz */ 105889cd83cSYuval Mintz enum { 106889cd83cSYuval Mintz MFC_STATIC = BIT(0), 107889cd83cSYuval Mintz MFC_OFFLOAD = BIT(1), 108889cd83cSYuval Mintz }; 109889cd83cSYuval Mintz 110b70432f7SYuval Mintz /** 111494fff56SYuval Mintz * struct mr_mfc - common multicast routing entries 112494fff56SYuval Mintz * @mnode: rhashtable list 113494fff56SYuval Mintz * @mfc_parent: source interface (iif) 114494fff56SYuval Mintz * @mfc_flags: entry flags 115494fff56SYuval Mintz * @expires: unresolved entry expire time 116494fff56SYuval Mintz * @unresolved: unresolved cached skbs 117494fff56SYuval Mintz * @last_assert: time of last assert 118494fff56SYuval Mintz * @minvif: minimum VIF id 119494fff56SYuval Mintz * @maxvif: maximum VIF id 120494fff56SYuval Mintz * @bytes: bytes that have passed for this entry 121494fff56SYuval Mintz * @pkt: packets that have passed for this entry 122494fff56SYuval Mintz * @wrong_if: number of wrong source interface hits 123494fff56SYuval Mintz * @lastuse: time of last use of the group (traffic or update) 124494fff56SYuval Mintz * @ttls: OIF TTL threshold array 125494fff56SYuval Mintz * @refcount: reference count for this entry 126494fff56SYuval Mintz * @list: global entry list 127494fff56SYuval Mintz * @rcu: used for entry destruction 1288c13af2aSYuval Mintz * @free: Operation used for freeing an entry under RCU 129494fff56SYuval Mintz */ 130494fff56SYuval Mintz struct mr_mfc { 131494fff56SYuval Mintz struct rhlist_head mnode; 132494fff56SYuval Mintz unsigned short mfc_parent; 133494fff56SYuval Mintz int mfc_flags; 134494fff56SYuval Mintz 135494fff56SYuval Mintz union { 136494fff56SYuval Mintz struct { 137494fff56SYuval Mintz unsigned long expires; 138494fff56SYuval Mintz struct sk_buff_head unresolved; 139494fff56SYuval Mintz } unres; 140494fff56SYuval Mintz struct { 141494fff56SYuval Mintz unsigned long last_assert; 142494fff56SYuval Mintz int minvif; 143494fff56SYuval Mintz int maxvif; 144494fff56SYuval Mintz unsigned long bytes; 145494fff56SYuval Mintz unsigned long pkt; 146494fff56SYuval Mintz unsigned long wrong_if; 147494fff56SYuval Mintz unsigned long lastuse; 148494fff56SYuval Mintz unsigned char ttls[MAXVIFS]; 149494fff56SYuval Mintz refcount_t refcount; 150494fff56SYuval Mintz } res; 151494fff56SYuval Mintz } mfc_un; 152494fff56SYuval Mintz struct list_head list; 153494fff56SYuval Mintz struct rcu_head rcu; 1548c13af2aSYuval Mintz void (*free)(struct rcu_head *head); 155494fff56SYuval Mintz }; 156494fff56SYuval Mintz 1578c13af2aSYuval Mintz static inline void mr_cache_put(struct mr_mfc *c) 1588c13af2aSYuval Mintz { 1598c13af2aSYuval Mintz if (refcount_dec_and_test(&c->mfc_un.res.refcount)) 1608c13af2aSYuval Mintz call_rcu(&c->rcu, c->free); 1618c13af2aSYuval Mintz } 1628c13af2aSYuval Mintz 1638c13af2aSYuval Mintz static inline void mr_cache_hold(struct mr_mfc *c) 1648c13af2aSYuval Mintz { 1658c13af2aSYuval Mintz refcount_inc(&c->mfc_un.res.refcount); 1668c13af2aSYuval Mintz } 1678c13af2aSYuval Mintz 16854c4cad9SYuval Mintz struct mfc_entry_notifier_info { 16954c4cad9SYuval Mintz struct fib_notifier_info info; 17054c4cad9SYuval Mintz struct mr_mfc *mfc; 17154c4cad9SYuval Mintz u32 tb_id; 17254c4cad9SYuval Mintz }; 17354c4cad9SYuval Mintz 17454c4cad9SYuval Mintz static inline int mr_call_mfc_notifier(struct notifier_block *nb, 17554c4cad9SYuval Mintz unsigned short family, 17654c4cad9SYuval Mintz enum fib_event_type event_type, 177*b7a59557SJiri Pirko struct mr_mfc *mfc, u32 tb_id, 178*b7a59557SJiri Pirko struct netlink_ext_ack *extack) 17954c4cad9SYuval Mintz { 18054c4cad9SYuval Mintz struct mfc_entry_notifier_info info = { 18154c4cad9SYuval Mintz .info = { 18254c4cad9SYuval Mintz .family = family, 183*b7a59557SJiri Pirko .extack = extack, 18454c4cad9SYuval Mintz }, 18554c4cad9SYuval Mintz .mfc = mfc, 18654c4cad9SYuval Mintz .tb_id = tb_id 18754c4cad9SYuval Mintz }; 18854c4cad9SYuval Mintz 1897c550dafSJiri Pirko return call_fib_notifier(nb, event_type, &info.info); 19054c4cad9SYuval Mintz } 19154c4cad9SYuval Mintz 19254c4cad9SYuval Mintz static inline int mr_call_mfc_notifiers(struct net *net, 19354c4cad9SYuval Mintz unsigned short family, 19454c4cad9SYuval Mintz enum fib_event_type event_type, 19554c4cad9SYuval Mintz struct mr_mfc *mfc, u32 tb_id, 19654c4cad9SYuval Mintz unsigned int *ipmr_seq) 19754c4cad9SYuval Mintz { 19854c4cad9SYuval Mintz struct mfc_entry_notifier_info info = { 19954c4cad9SYuval Mintz .info = { 20054c4cad9SYuval Mintz .family = family, 20154c4cad9SYuval Mintz }, 20254c4cad9SYuval Mintz .mfc = mfc, 20354c4cad9SYuval Mintz .tb_id = tb_id 20454c4cad9SYuval Mintz }; 20554c4cad9SYuval Mintz 20654c4cad9SYuval Mintz ASSERT_RTNL(); 20754c4cad9SYuval Mintz (*ipmr_seq)++; 20854c4cad9SYuval Mintz return call_fib_notifiers(net, event_type, &info.info); 20954c4cad9SYuval Mintz } 21054c4cad9SYuval Mintz 211845c9a7aSYuval Mintz struct mr_table; 212845c9a7aSYuval Mintz 213845c9a7aSYuval Mintz /** 214845c9a7aSYuval Mintz * struct mr_table_ops - callbacks and info for protocol-specific ops 215845c9a7aSYuval Mintz * @rht_params: parameters for accessing the MFC hash 216845c9a7aSYuval Mintz * @cmparg_any: a hash key to be used for matching on (*,*) routes 217845c9a7aSYuval Mintz */ 218845c9a7aSYuval Mintz struct mr_table_ops { 219845c9a7aSYuval Mintz const struct rhashtable_params *rht_params; 220845c9a7aSYuval Mintz void *cmparg_any; 221845c9a7aSYuval Mintz }; 222845c9a7aSYuval Mintz 223494fff56SYuval Mintz /** 224b70432f7SYuval Mintz * struct mr_table - a multicast routing table 225b70432f7SYuval Mintz * @list: entry within a list of multicast routing tables 226b70432f7SYuval Mintz * @net: net where this table belongs 227845c9a7aSYuval Mintz * @ops: protocol specific operations 228b70432f7SYuval Mintz * @id: identifier of the table 229b70432f7SYuval Mintz * @mroute_sk: socket associated with the table 230b70432f7SYuval Mintz * @ipmr_expire_timer: timer for handling unresolved routes 231b70432f7SYuval Mintz * @mfc_unres_queue: list of unresolved MFC entries 232b70432f7SYuval Mintz * @vif_table: array containing all possible vifs 233b70432f7SYuval Mintz * @mfc_hash: Hash table of all resolved routes for easy lookup 234b70432f7SYuval Mintz * @mfc_cache_list: list of resovled routes for possible traversal 235b70432f7SYuval Mintz * @maxvif: Identifier of highest value vif currently in use 236b70432f7SYuval Mintz * @cache_resolve_queue_len: current size of unresolved queue 237b70432f7SYuval Mintz * @mroute_do_assert: Whether to inform userspace on wrong ingress 238b70432f7SYuval Mintz * @mroute_do_pim: Whether to receive IGMP PIMv1 239b70432f7SYuval Mintz * @mroute_reg_vif_num: PIM-device vif index 240b70432f7SYuval Mintz */ 241b70432f7SYuval Mintz struct mr_table { 242b70432f7SYuval Mintz struct list_head list; 243b70432f7SYuval Mintz possible_net_t net; 244845c9a7aSYuval Mintz struct mr_table_ops ops; 245b70432f7SYuval Mintz u32 id; 246b70432f7SYuval Mintz struct sock __rcu *mroute_sk; 247b70432f7SYuval Mintz struct timer_list ipmr_expire_timer; 248b70432f7SYuval Mintz struct list_head mfc_unres_queue; 249b70432f7SYuval Mintz struct vif_device vif_table[MAXVIFS]; 250b70432f7SYuval Mintz struct rhltable mfc_hash; 251b70432f7SYuval Mintz struct list_head mfc_cache_list; 252b70432f7SYuval Mintz int maxvif; 253b70432f7SYuval Mintz atomic_t cache_resolve_queue_len; 254b70432f7SYuval Mintz bool mroute_do_assert; 255b70432f7SYuval Mintz bool mroute_do_pim; 256c921c207SNikolay Aleksandrov bool mroute_do_wrvifwhole; 257b70432f7SYuval Mintz int mroute_reg_vif_num; 258b70432f7SYuval Mintz }; 259b70432f7SYuval Mintz 2606853f21fSYuval Mintz #ifdef CONFIG_IP_MROUTE_COMMON 2616853f21fSYuval Mintz void vif_device_init(struct vif_device *v, 2626853f21fSYuval Mintz struct net_device *dev, 2636853f21fSYuval Mintz unsigned long rate_limit, 2646853f21fSYuval Mintz unsigned char threshold, 2656853f21fSYuval Mintz unsigned short flags, 2666853f21fSYuval Mintz unsigned short get_iflink_mask); 2670bbbf0e7SYuval Mintz 2680bbbf0e7SYuval Mintz struct mr_table * 2690bbbf0e7SYuval Mintz mr_table_alloc(struct net *net, u32 id, 270845c9a7aSYuval Mintz struct mr_table_ops *ops, 2710bbbf0e7SYuval Mintz void (*expire_func)(struct timer_list *t), 2720bbbf0e7SYuval Mintz void (*table_set)(struct mr_table *mrt, 2730bbbf0e7SYuval Mintz struct net *net)); 274845c9a7aSYuval Mintz 275845c9a7aSYuval Mintz /* These actually return 'struct mr_mfc *', but to avoid need for explicit 276845c9a7aSYuval Mintz * castings they simply return void. 277845c9a7aSYuval Mintz */ 278845c9a7aSYuval Mintz void *mr_mfc_find_parent(struct mr_table *mrt, 279845c9a7aSYuval Mintz void *hasharg, int parent); 280845c9a7aSYuval Mintz void *mr_mfc_find_any_parent(struct mr_table *mrt, int vifi); 281845c9a7aSYuval Mintz void *mr_mfc_find_any(struct mr_table *mrt, int vifi, void *hasharg); 282845c9a7aSYuval Mintz 2837b0db857SYuval Mintz int mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, 2847b0db857SYuval Mintz struct mr_mfc *c, struct rtmsg *rtm); 285e1cedae1SDavid Ahern int mr_table_dump(struct mr_table *mrt, struct sk_buff *skb, 286e1cedae1SDavid Ahern struct netlink_callback *cb, 287e1cedae1SDavid Ahern int (*fill)(struct mr_table *mrt, struct sk_buff *skb, 288e1cedae1SDavid Ahern u32 portid, u32 seq, struct mr_mfc *c, 289e1cedae1SDavid Ahern int cmd, int flags), 290cb167893SDavid Ahern spinlock_t *lock, struct fib_dump_filter *filter); 2917b0db857SYuval Mintz int mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb, 2927b0db857SYuval Mintz struct mr_table *(*iter)(struct net *net, 2937b0db857SYuval Mintz struct mr_table *mrt), 2947b0db857SYuval Mintz int (*fill)(struct mr_table *mrt, 2957b0db857SYuval Mintz struct sk_buff *skb, 2967b0db857SYuval Mintz u32 portid, u32 seq, struct mr_mfc *c, 2977b0db857SYuval Mintz int cmd, int flags), 298cb167893SDavid Ahern spinlock_t *lock, struct fib_dump_filter *filter); 299cdc9f944SYuval Mintz 300cdc9f944SYuval Mintz int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family, 301cdc9f944SYuval Mintz int (*rules_dump)(struct net *net, 302*b7a59557SJiri Pirko struct notifier_block *nb, 303*b7a59557SJiri Pirko struct netlink_ext_ack *extack), 304cdc9f944SYuval Mintz struct mr_table *(*mr_iter)(struct net *net, 305cdc9f944SYuval Mintz struct mr_table *mrt), 306*b7a59557SJiri Pirko rwlock_t *mrt_lock, struct netlink_ext_ack *extack); 3076853f21fSYuval Mintz #else 3086853f21fSYuval Mintz static inline void vif_device_init(struct vif_device *v, 3096853f21fSYuval Mintz struct net_device *dev, 3106853f21fSYuval Mintz unsigned long rate_limit, 3116853f21fSYuval Mintz unsigned char threshold, 3126853f21fSYuval Mintz unsigned short flags, 3136853f21fSYuval Mintz unsigned short get_iflink_mask) 3146853f21fSYuval Mintz { 3156853f21fSYuval Mintz } 3160bbbf0e7SYuval Mintz 317845c9a7aSYuval Mintz static inline void *mr_mfc_find_parent(struct mr_table *mrt, 318845c9a7aSYuval Mintz void *hasharg, int parent) 319845c9a7aSYuval Mintz { 320845c9a7aSYuval Mintz return NULL; 321845c9a7aSYuval Mintz } 322845c9a7aSYuval Mintz 323845c9a7aSYuval Mintz static inline void *mr_mfc_find_any_parent(struct mr_table *mrt, 324845c9a7aSYuval Mintz int vifi) 325845c9a7aSYuval Mintz { 326845c9a7aSYuval Mintz return NULL; 327845c9a7aSYuval Mintz } 328845c9a7aSYuval Mintz 329845c9a7aSYuval Mintz static inline struct mr_mfc *mr_mfc_find_any(struct mr_table *mrt, 330845c9a7aSYuval Mintz int vifi, void *hasharg) 331845c9a7aSYuval Mintz { 332845c9a7aSYuval Mintz return NULL; 333845c9a7aSYuval Mintz } 3347b0db857SYuval Mintz 3357b0db857SYuval Mintz static inline int mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, 3367b0db857SYuval Mintz struct mr_mfc *c, struct rtmsg *rtm) 3377b0db857SYuval Mintz { 3387b0db857SYuval Mintz return -EINVAL; 3397b0db857SYuval Mintz } 3407b0db857SYuval Mintz 3417b0db857SYuval Mintz static inline int 3427b0db857SYuval Mintz mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb, 3437b0db857SYuval Mintz struct mr_table *(*iter)(struct net *net, 3447b0db857SYuval Mintz struct mr_table *mrt), 3457b0db857SYuval Mintz int (*fill)(struct mr_table *mrt, 3467b0db857SYuval Mintz struct sk_buff *skb, 3477b0db857SYuval Mintz u32 portid, u32 seq, struct mr_mfc *c, 3487b0db857SYuval Mintz int cmd, int flags), 349cb167893SDavid Ahern spinlock_t *lock, struct fib_dump_filter *filter) 3507b0db857SYuval Mintz { 3517b0db857SYuval Mintz return -EINVAL; 3527b0db857SYuval Mintz } 353cdc9f944SYuval Mintz 354cdc9f944SYuval Mintz static inline int mr_dump(struct net *net, struct notifier_block *nb, 355cdc9f944SYuval Mintz unsigned short family, 356cdc9f944SYuval Mintz int (*rules_dump)(struct net *net, 357*b7a59557SJiri Pirko struct notifier_block *nb, 358*b7a59557SJiri Pirko struct netlink_ext_ack *extack), 359cdc9f944SYuval Mintz struct mr_table *(*mr_iter)(struct net *net, 360cdc9f944SYuval Mintz struct mr_table *mrt), 361*b7a59557SJiri Pirko rwlock_t *mrt_lock, struct netlink_ext_ack *extack) 362cdc9f944SYuval Mintz { 363cdc9f944SYuval Mintz return -EINVAL; 364cdc9f944SYuval Mintz } 3656853f21fSYuval Mintz #endif 366845c9a7aSYuval Mintz 367845c9a7aSYuval Mintz static inline void *mr_mfc_find(struct mr_table *mrt, void *hasharg) 368845c9a7aSYuval Mintz { 369845c9a7aSYuval Mintz return mr_mfc_find_parent(mrt, hasharg, -1); 370845c9a7aSYuval Mintz } 371c8d61968SYuval Mintz 372c8d61968SYuval Mintz #ifdef CONFIG_PROC_FS 3733feda6b4SYuval Mintz struct mr_vif_iter { 3743feda6b4SYuval Mintz struct seq_net_private p; 3753feda6b4SYuval Mintz struct mr_table *mrt; 3763feda6b4SYuval Mintz int ct; 3773feda6b4SYuval Mintz }; 3783feda6b4SYuval Mintz 379c8d61968SYuval Mintz struct mr_mfc_iter { 380c8d61968SYuval Mintz struct seq_net_private p; 381c8d61968SYuval Mintz struct mr_table *mrt; 382c8d61968SYuval Mintz struct list_head *cache; 383c8d61968SYuval Mintz 384c8d61968SYuval Mintz /* Lock protecting the mr_table's unresolved queue */ 385c8d61968SYuval Mintz spinlock_t *lock; 386c8d61968SYuval Mintz }; 387c8d61968SYuval Mintz 388c8d61968SYuval Mintz #ifdef CONFIG_IP_MROUTE_COMMON 3893feda6b4SYuval Mintz void *mr_vif_seq_idx(struct net *net, struct mr_vif_iter *iter, loff_t pos); 3903feda6b4SYuval Mintz void *mr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos); 3913feda6b4SYuval Mintz 3923feda6b4SYuval Mintz static inline void *mr_vif_seq_start(struct seq_file *seq, loff_t *pos) 3933feda6b4SYuval Mintz { 3943feda6b4SYuval Mintz return *pos ? mr_vif_seq_idx(seq_file_net(seq), 3953feda6b4SYuval Mintz seq->private, *pos - 1) 3963feda6b4SYuval Mintz : SEQ_START_TOKEN; 3973feda6b4SYuval Mintz } 3983feda6b4SYuval Mintz 399c8d61968SYuval Mintz /* These actually return 'struct mr_mfc *', but to avoid need for explicit 400c8d61968SYuval Mintz * castings they simply return void. 401c8d61968SYuval Mintz */ 402c8d61968SYuval Mintz void *mr_mfc_seq_idx(struct net *net, 403c8d61968SYuval Mintz struct mr_mfc_iter *it, loff_t pos); 404c8d61968SYuval Mintz void *mr_mfc_seq_next(struct seq_file *seq, void *v, 405c8d61968SYuval Mintz loff_t *pos); 406c8d61968SYuval Mintz 407c8d61968SYuval Mintz static inline void *mr_mfc_seq_start(struct seq_file *seq, loff_t *pos, 408c8d61968SYuval Mintz struct mr_table *mrt, spinlock_t *lock) 409c8d61968SYuval Mintz { 410c8d61968SYuval Mintz struct mr_mfc_iter *it = seq->private; 411c8d61968SYuval Mintz 412c8d61968SYuval Mintz it->mrt = mrt; 413c8d61968SYuval Mintz it->cache = NULL; 414c8d61968SYuval Mintz it->lock = lock; 415c8d61968SYuval Mintz 416c8d61968SYuval Mintz return *pos ? mr_mfc_seq_idx(seq_file_net(seq), 417c8d61968SYuval Mintz seq->private, *pos - 1) 418c8d61968SYuval Mintz : SEQ_START_TOKEN; 419c8d61968SYuval Mintz } 420c8d61968SYuval Mintz 421c8d61968SYuval Mintz static inline void mr_mfc_seq_stop(struct seq_file *seq, void *v) 422c8d61968SYuval Mintz { 423c8d61968SYuval Mintz struct mr_mfc_iter *it = seq->private; 424c8d61968SYuval Mintz struct mr_table *mrt = it->mrt; 425c8d61968SYuval Mintz 426c8d61968SYuval Mintz if (it->cache == &mrt->mfc_unres_queue) 427c8d61968SYuval Mintz spin_unlock_bh(it->lock); 428c8d61968SYuval Mintz else if (it->cache == &mrt->mfc_cache_list) 429c8d61968SYuval Mintz rcu_read_unlock(); 430c8d61968SYuval Mintz } 431c8d61968SYuval Mintz #else 4323feda6b4SYuval Mintz static inline void *mr_vif_seq_idx(struct net *net, struct mr_vif_iter *iter, 4333feda6b4SYuval Mintz loff_t pos) 4343feda6b4SYuval Mintz { 4353feda6b4SYuval Mintz return NULL; 4363feda6b4SYuval Mintz } 4373feda6b4SYuval Mintz 4383feda6b4SYuval Mintz static inline void *mr_vif_seq_next(struct seq_file *seq, 4393feda6b4SYuval Mintz void *v, loff_t *pos) 4403feda6b4SYuval Mintz { 4413feda6b4SYuval Mintz return NULL; 4423feda6b4SYuval Mintz } 4433feda6b4SYuval Mintz 4443feda6b4SYuval Mintz static inline void *mr_vif_seq_start(struct seq_file *seq, loff_t *pos) 4453feda6b4SYuval Mintz { 4463feda6b4SYuval Mintz return NULL; 4473feda6b4SYuval Mintz } 4483feda6b4SYuval Mintz 449c8d61968SYuval Mintz static inline void *mr_mfc_seq_idx(struct net *net, 450c8d61968SYuval Mintz struct mr_mfc_iter *it, loff_t pos) 451c8d61968SYuval Mintz { 452c8d61968SYuval Mintz return NULL; 453c8d61968SYuval Mintz } 454c8d61968SYuval Mintz 455c8d61968SYuval Mintz static inline void *mr_mfc_seq_next(struct seq_file *seq, void *v, 456c8d61968SYuval Mintz loff_t *pos) 457c8d61968SYuval Mintz { 458c8d61968SYuval Mintz return NULL; 459c8d61968SYuval Mintz } 460c8d61968SYuval Mintz 461c8d61968SYuval Mintz static inline void *mr_mfc_seq_start(struct seq_file *seq, loff_t *pos, 462c8d61968SYuval Mintz struct mr_table *mrt, spinlock_t *lock) 463c8d61968SYuval Mintz { 464c8d61968SYuval Mintz return NULL; 465c8d61968SYuval Mintz } 466c8d61968SYuval Mintz 467c8d61968SYuval Mintz static inline void mr_mfc_seq_stop(struct seq_file *seq, void *v) 468c8d61968SYuval Mintz { 469c8d61968SYuval Mintz } 470c8d61968SYuval Mintz #endif 471c8d61968SYuval Mintz #endif 4726853f21fSYuval Mintz #endif 473