16853f21fSYuval Mintz #ifndef __LINUX_MROUTE_BASE_H 26853f21fSYuval Mintz #define __LINUX_MROUTE_BASE_H 36853f21fSYuval Mintz 46853f21fSYuval Mintz #include <linux/netdevice.h> 5b70432f7SYuval Mintz #include <linux/rhashtable.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> 106853f21fSYuval Mintz 116853f21fSYuval Mintz /** 126853f21fSYuval Mintz * struct vif_device - interface representor for multicast routing 136853f21fSYuval Mintz * @dev: network device being used 146853f21fSYuval Mintz * @bytes_in: statistic; bytes ingressing 156853f21fSYuval Mintz * @bytes_out: statistic; bytes egresing 166853f21fSYuval Mintz * @pkt_in: statistic; packets ingressing 176853f21fSYuval Mintz * @pkt_out: statistic; packets egressing 186853f21fSYuval Mintz * @rate_limit: Traffic shaping (NI) 196853f21fSYuval Mintz * @threshold: TTL threshold 206853f21fSYuval Mintz * @flags: Control flags 216853f21fSYuval Mintz * @link: Physical interface index 226853f21fSYuval Mintz * @dev_parent_id: device parent id 236853f21fSYuval Mintz * @local: Local address 246853f21fSYuval Mintz * @remote: Remote address for tunnels 256853f21fSYuval Mintz */ 266853f21fSYuval Mintz struct vif_device { 276853f21fSYuval Mintz struct net_device *dev; 286853f21fSYuval Mintz unsigned long bytes_in, bytes_out; 296853f21fSYuval Mintz unsigned long pkt_in, pkt_out; 306853f21fSYuval Mintz unsigned long rate_limit; 316853f21fSYuval Mintz unsigned char threshold; 326853f21fSYuval Mintz unsigned short flags; 336853f21fSYuval Mintz int link; 346853f21fSYuval Mintz 356853f21fSYuval Mintz /* Currently only used by ipmr */ 366853f21fSYuval Mintz struct netdev_phys_item_id dev_parent_id; 376853f21fSYuval Mintz __be32 local, remote; 386853f21fSYuval Mintz }; 396853f21fSYuval Mintz 40bc67a0daSYuval Mintz struct vif_entry_notifier_info { 41bc67a0daSYuval Mintz struct fib_notifier_info info; 42bc67a0daSYuval Mintz struct net_device *dev; 43bc67a0daSYuval Mintz unsigned short vif_index; 44bc67a0daSYuval Mintz unsigned short vif_flags; 45bc67a0daSYuval Mintz u32 tb_id; 46bc67a0daSYuval Mintz }; 47bc67a0daSYuval Mintz 48bc67a0daSYuval Mintz static inline int mr_call_vif_notifier(struct notifier_block *nb, 49bc67a0daSYuval Mintz struct net *net, 50bc67a0daSYuval Mintz unsigned short family, 51bc67a0daSYuval Mintz enum fib_event_type event_type, 52bc67a0daSYuval Mintz struct vif_device *vif, 53bc67a0daSYuval Mintz unsigned short vif_index, u32 tb_id) 54bc67a0daSYuval Mintz { 55bc67a0daSYuval Mintz struct vif_entry_notifier_info info = { 56bc67a0daSYuval Mintz .info = { 57bc67a0daSYuval Mintz .family = family, 58bc67a0daSYuval Mintz .net = net, 59bc67a0daSYuval Mintz }, 60bc67a0daSYuval Mintz .dev = vif->dev, 61bc67a0daSYuval Mintz .vif_index = vif_index, 62bc67a0daSYuval Mintz .vif_flags = vif->flags, 63bc67a0daSYuval Mintz .tb_id = tb_id, 64bc67a0daSYuval Mintz }; 65bc67a0daSYuval Mintz 66bc67a0daSYuval Mintz return call_fib_notifier(nb, net, event_type, &info.info); 67bc67a0daSYuval Mintz } 68bc67a0daSYuval Mintz 69bc67a0daSYuval Mintz static inline int mr_call_vif_notifiers(struct net *net, 70bc67a0daSYuval Mintz unsigned short family, 71bc67a0daSYuval Mintz enum fib_event_type event_type, 72bc67a0daSYuval Mintz struct vif_device *vif, 73bc67a0daSYuval Mintz unsigned short vif_index, u32 tb_id, 74bc67a0daSYuval Mintz unsigned int *ipmr_seq) 75bc67a0daSYuval Mintz { 76bc67a0daSYuval Mintz struct vif_entry_notifier_info info = { 77bc67a0daSYuval Mintz .info = { 78bc67a0daSYuval Mintz .family = family, 79bc67a0daSYuval Mintz .net = net, 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 128*8c13af2aSYuval 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; 154*8c13af2aSYuval Mintz void (*free)(struct rcu_head *head); 155494fff56SYuval Mintz }; 156494fff56SYuval Mintz 157*8c13af2aSYuval Mintz static inline void mr_cache_put(struct mr_mfc *c) 158*8c13af2aSYuval Mintz { 159*8c13af2aSYuval Mintz if (refcount_dec_and_test(&c->mfc_un.res.refcount)) 160*8c13af2aSYuval Mintz call_rcu(&c->rcu, c->free); 161*8c13af2aSYuval Mintz } 162*8c13af2aSYuval Mintz 163*8c13af2aSYuval Mintz static inline void mr_cache_hold(struct mr_mfc *c) 164*8c13af2aSYuval Mintz { 165*8c13af2aSYuval Mintz refcount_inc(&c->mfc_un.res.refcount); 166*8c13af2aSYuval Mintz } 167*8c13af2aSYuval 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 struct net *net, 17654c4cad9SYuval Mintz unsigned short family, 17754c4cad9SYuval Mintz enum fib_event_type event_type, 17854c4cad9SYuval Mintz struct mr_mfc *mfc, u32 tb_id) 17954c4cad9SYuval Mintz { 18054c4cad9SYuval Mintz struct mfc_entry_notifier_info info = { 18154c4cad9SYuval Mintz .info = { 18254c4cad9SYuval Mintz .family = family, 18354c4cad9SYuval Mintz .net = net, 18454c4cad9SYuval Mintz }, 18554c4cad9SYuval Mintz .mfc = mfc, 18654c4cad9SYuval Mintz .tb_id = tb_id 18754c4cad9SYuval Mintz }; 18854c4cad9SYuval Mintz 18954c4cad9SYuval Mintz return call_fib_notifier(nb, net, 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 .net = net, 20254c4cad9SYuval Mintz }, 20354c4cad9SYuval Mintz .mfc = mfc, 20454c4cad9SYuval Mintz .tb_id = tb_id 20554c4cad9SYuval Mintz }; 20654c4cad9SYuval Mintz 20754c4cad9SYuval Mintz ASSERT_RTNL(); 20854c4cad9SYuval Mintz (*ipmr_seq)++; 20954c4cad9SYuval Mintz return call_fib_notifiers(net, event_type, &info.info); 21054c4cad9SYuval Mintz } 21154c4cad9SYuval Mintz 212845c9a7aSYuval Mintz struct mr_table; 213845c9a7aSYuval Mintz 214845c9a7aSYuval Mintz /** 215845c9a7aSYuval Mintz * struct mr_table_ops - callbacks and info for protocol-specific ops 216845c9a7aSYuval Mintz * @rht_params: parameters for accessing the MFC hash 217845c9a7aSYuval Mintz * @cmparg_any: a hash key to be used for matching on (*,*) routes 218845c9a7aSYuval Mintz */ 219845c9a7aSYuval Mintz struct mr_table_ops { 220845c9a7aSYuval Mintz const struct rhashtable_params *rht_params; 221845c9a7aSYuval Mintz void *cmparg_any; 222845c9a7aSYuval Mintz }; 223845c9a7aSYuval Mintz 224494fff56SYuval Mintz /** 225b70432f7SYuval Mintz * struct mr_table - a multicast routing table 226b70432f7SYuval Mintz * @list: entry within a list of multicast routing tables 227b70432f7SYuval Mintz * @net: net where this table belongs 228845c9a7aSYuval Mintz * @ops: protocol specific operations 229b70432f7SYuval Mintz * @id: identifier of the table 230b70432f7SYuval Mintz * @mroute_sk: socket associated with the table 231b70432f7SYuval Mintz * @ipmr_expire_timer: timer for handling unresolved routes 232b70432f7SYuval Mintz * @mfc_unres_queue: list of unresolved MFC entries 233b70432f7SYuval Mintz * @vif_table: array containing all possible vifs 234b70432f7SYuval Mintz * @mfc_hash: Hash table of all resolved routes for easy lookup 235b70432f7SYuval Mintz * @mfc_cache_list: list of resovled routes for possible traversal 236b70432f7SYuval Mintz * @maxvif: Identifier of highest value vif currently in use 237b70432f7SYuval Mintz * @cache_resolve_queue_len: current size of unresolved queue 238b70432f7SYuval Mintz * @mroute_do_assert: Whether to inform userspace on wrong ingress 239b70432f7SYuval Mintz * @mroute_do_pim: Whether to receive IGMP PIMv1 240b70432f7SYuval Mintz * @mroute_reg_vif_num: PIM-device vif index 241b70432f7SYuval Mintz */ 242b70432f7SYuval Mintz struct mr_table { 243b70432f7SYuval Mintz struct list_head list; 244b70432f7SYuval Mintz possible_net_t net; 245845c9a7aSYuval Mintz struct mr_table_ops ops; 246b70432f7SYuval Mintz u32 id; 247b70432f7SYuval Mintz struct sock __rcu *mroute_sk; 248b70432f7SYuval Mintz struct timer_list ipmr_expire_timer; 249b70432f7SYuval Mintz struct list_head mfc_unres_queue; 250b70432f7SYuval Mintz struct vif_device vif_table[MAXVIFS]; 251b70432f7SYuval Mintz struct rhltable mfc_hash; 252b70432f7SYuval Mintz struct list_head mfc_cache_list; 253b70432f7SYuval Mintz int maxvif; 254b70432f7SYuval Mintz atomic_t cache_resolve_queue_len; 255b70432f7SYuval Mintz bool mroute_do_assert; 256b70432f7SYuval Mintz bool mroute_do_pim; 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); 2857b0db857SYuval Mintz int mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb, 2867b0db857SYuval Mintz struct mr_table *(*iter)(struct net *net, 2877b0db857SYuval Mintz struct mr_table *mrt), 2887b0db857SYuval Mintz int (*fill)(struct mr_table *mrt, 2897b0db857SYuval Mintz struct sk_buff *skb, 2907b0db857SYuval Mintz u32 portid, u32 seq, struct mr_mfc *c, 2917b0db857SYuval Mintz int cmd, int flags), 2927b0db857SYuval Mintz spinlock_t *lock); 293cdc9f944SYuval Mintz 294cdc9f944SYuval Mintz int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family, 295cdc9f944SYuval Mintz int (*rules_dump)(struct net *net, 296cdc9f944SYuval Mintz struct notifier_block *nb), 297cdc9f944SYuval Mintz struct mr_table *(*mr_iter)(struct net *net, 298cdc9f944SYuval Mintz struct mr_table *mrt), 299cdc9f944SYuval Mintz rwlock_t *mrt_lock); 3006853f21fSYuval Mintz #else 3016853f21fSYuval Mintz static inline void vif_device_init(struct vif_device *v, 3026853f21fSYuval Mintz struct net_device *dev, 3036853f21fSYuval Mintz unsigned long rate_limit, 3046853f21fSYuval Mintz unsigned char threshold, 3056853f21fSYuval Mintz unsigned short flags, 3066853f21fSYuval Mintz unsigned short get_iflink_mask) 3076853f21fSYuval Mintz { 3086853f21fSYuval Mintz } 3090bbbf0e7SYuval Mintz 310845c9a7aSYuval Mintz static inline void * 3110bbbf0e7SYuval Mintz mr_table_alloc(struct net *net, u32 id, 312845c9a7aSYuval Mintz struct mr_table_ops *ops, 3130bbbf0e7SYuval Mintz void (*expire_func)(struct timer_list *t), 3140bbbf0e7SYuval Mintz void (*table_set)(struct mr_table *mrt, 3150bbbf0e7SYuval Mintz struct net *net)) 3160bbbf0e7SYuval Mintz { 3170bbbf0e7SYuval Mintz return NULL; 3180bbbf0e7SYuval Mintz } 319845c9a7aSYuval Mintz 320845c9a7aSYuval Mintz static inline void *mr_mfc_find_parent(struct mr_table *mrt, 321845c9a7aSYuval Mintz void *hasharg, int parent) 322845c9a7aSYuval Mintz { 323845c9a7aSYuval Mintz return NULL; 324845c9a7aSYuval Mintz } 325845c9a7aSYuval Mintz 326845c9a7aSYuval Mintz static inline void *mr_mfc_find_any_parent(struct mr_table *mrt, 327845c9a7aSYuval Mintz int vifi) 328845c9a7aSYuval Mintz { 329845c9a7aSYuval Mintz return NULL; 330845c9a7aSYuval Mintz } 331845c9a7aSYuval Mintz 332845c9a7aSYuval Mintz static inline struct mr_mfc *mr_mfc_find_any(struct mr_table *mrt, 333845c9a7aSYuval Mintz int vifi, void *hasharg) 334845c9a7aSYuval Mintz { 335845c9a7aSYuval Mintz return NULL; 336845c9a7aSYuval Mintz } 3377b0db857SYuval Mintz 3387b0db857SYuval Mintz static inline int mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, 3397b0db857SYuval Mintz struct mr_mfc *c, struct rtmsg *rtm) 3407b0db857SYuval Mintz { 3417b0db857SYuval Mintz return -EINVAL; 3427b0db857SYuval Mintz } 3437b0db857SYuval Mintz 3447b0db857SYuval Mintz static inline int 3457b0db857SYuval Mintz mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb, 3467b0db857SYuval Mintz struct mr_table *(*iter)(struct net *net, 3477b0db857SYuval Mintz struct mr_table *mrt), 3487b0db857SYuval Mintz int (*fill)(struct mr_table *mrt, 3497b0db857SYuval Mintz struct sk_buff *skb, 3507b0db857SYuval Mintz u32 portid, u32 seq, struct mr_mfc *c, 3517b0db857SYuval Mintz int cmd, int flags), 3527b0db857SYuval Mintz spinlock_t *lock) 3537b0db857SYuval Mintz { 3547b0db857SYuval Mintz return -EINVAL; 3557b0db857SYuval Mintz } 356cdc9f944SYuval Mintz 357cdc9f944SYuval Mintz static inline int mr_dump(struct net *net, struct notifier_block *nb, 358cdc9f944SYuval Mintz unsigned short family, 359cdc9f944SYuval Mintz int (*rules_dump)(struct net *net, 360cdc9f944SYuval Mintz struct notifier_block *nb), 361cdc9f944SYuval Mintz struct mr_table *(*mr_iter)(struct net *net, 362cdc9f944SYuval Mintz struct mr_table *mrt), 363cdc9f944SYuval Mintz rwlock_t *mrt_lock) 364cdc9f944SYuval Mintz { 365cdc9f944SYuval Mintz return -EINVAL; 366cdc9f944SYuval Mintz } 3676853f21fSYuval Mintz #endif 368845c9a7aSYuval Mintz 369845c9a7aSYuval Mintz static inline void *mr_mfc_find(struct mr_table *mrt, void *hasharg) 370845c9a7aSYuval Mintz { 371845c9a7aSYuval Mintz return mr_mfc_find_parent(mrt, hasharg, -1); 372845c9a7aSYuval Mintz } 373c8d61968SYuval Mintz 374c8d61968SYuval Mintz #ifdef CONFIG_PROC_FS 3753feda6b4SYuval Mintz struct mr_vif_iter { 3763feda6b4SYuval Mintz struct seq_net_private p; 3773feda6b4SYuval Mintz struct mr_table *mrt; 3783feda6b4SYuval Mintz int ct; 3793feda6b4SYuval Mintz }; 3803feda6b4SYuval Mintz 381c8d61968SYuval Mintz struct mr_mfc_iter { 382c8d61968SYuval Mintz struct seq_net_private p; 383c8d61968SYuval Mintz struct mr_table *mrt; 384c8d61968SYuval Mintz struct list_head *cache; 385c8d61968SYuval Mintz 386c8d61968SYuval Mintz /* Lock protecting the mr_table's unresolved queue */ 387c8d61968SYuval Mintz spinlock_t *lock; 388c8d61968SYuval Mintz }; 389c8d61968SYuval Mintz 390c8d61968SYuval Mintz #ifdef CONFIG_IP_MROUTE_COMMON 3913feda6b4SYuval Mintz void *mr_vif_seq_idx(struct net *net, struct mr_vif_iter *iter, loff_t pos); 3923feda6b4SYuval Mintz void *mr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos); 3933feda6b4SYuval Mintz 3943feda6b4SYuval Mintz static inline void *mr_vif_seq_start(struct seq_file *seq, loff_t *pos) 3953feda6b4SYuval Mintz { 3963feda6b4SYuval Mintz return *pos ? mr_vif_seq_idx(seq_file_net(seq), 3973feda6b4SYuval Mintz seq->private, *pos - 1) 3983feda6b4SYuval Mintz : SEQ_START_TOKEN; 3993feda6b4SYuval Mintz } 4003feda6b4SYuval Mintz 401c8d61968SYuval Mintz /* These actually return 'struct mr_mfc *', but to avoid need for explicit 402c8d61968SYuval Mintz * castings they simply return void. 403c8d61968SYuval Mintz */ 404c8d61968SYuval Mintz void *mr_mfc_seq_idx(struct net *net, 405c8d61968SYuval Mintz struct mr_mfc_iter *it, loff_t pos); 406c8d61968SYuval Mintz void *mr_mfc_seq_next(struct seq_file *seq, void *v, 407c8d61968SYuval Mintz loff_t *pos); 408c8d61968SYuval Mintz 409c8d61968SYuval Mintz static inline void *mr_mfc_seq_start(struct seq_file *seq, loff_t *pos, 410c8d61968SYuval Mintz struct mr_table *mrt, spinlock_t *lock) 411c8d61968SYuval Mintz { 412c8d61968SYuval Mintz struct mr_mfc_iter *it = seq->private; 413c8d61968SYuval Mintz 414c8d61968SYuval Mintz it->mrt = mrt; 415c8d61968SYuval Mintz it->cache = NULL; 416c8d61968SYuval Mintz it->lock = lock; 417c8d61968SYuval Mintz 418c8d61968SYuval Mintz return *pos ? mr_mfc_seq_idx(seq_file_net(seq), 419c8d61968SYuval Mintz seq->private, *pos - 1) 420c8d61968SYuval Mintz : SEQ_START_TOKEN; 421c8d61968SYuval Mintz } 422c8d61968SYuval Mintz 423c8d61968SYuval Mintz static inline void mr_mfc_seq_stop(struct seq_file *seq, void *v) 424c8d61968SYuval Mintz { 425c8d61968SYuval Mintz struct mr_mfc_iter *it = seq->private; 426c8d61968SYuval Mintz struct mr_table *mrt = it->mrt; 427c8d61968SYuval Mintz 428c8d61968SYuval Mintz if (it->cache == &mrt->mfc_unres_queue) 429c8d61968SYuval Mintz spin_unlock_bh(it->lock); 430c8d61968SYuval Mintz else if (it->cache == &mrt->mfc_cache_list) 431c8d61968SYuval Mintz rcu_read_unlock(); 432c8d61968SYuval Mintz } 433c8d61968SYuval Mintz #else 4343feda6b4SYuval Mintz static inline void *mr_vif_seq_idx(struct net *net, struct mr_vif_iter *iter, 4353feda6b4SYuval Mintz loff_t pos) 4363feda6b4SYuval Mintz { 4373feda6b4SYuval Mintz return NULL; 4383feda6b4SYuval Mintz } 4393feda6b4SYuval Mintz 4403feda6b4SYuval Mintz static inline void *mr_vif_seq_next(struct seq_file *seq, 4413feda6b4SYuval Mintz void *v, loff_t *pos) 4423feda6b4SYuval Mintz { 4433feda6b4SYuval Mintz return NULL; 4443feda6b4SYuval Mintz } 4453feda6b4SYuval Mintz 4463feda6b4SYuval Mintz static inline void *mr_vif_seq_start(struct seq_file *seq, loff_t *pos) 4473feda6b4SYuval Mintz { 4483feda6b4SYuval Mintz return NULL; 4493feda6b4SYuval Mintz } 4503feda6b4SYuval Mintz 451c8d61968SYuval Mintz static inline void *mr_mfc_seq_idx(struct net *net, 452c8d61968SYuval Mintz struct mr_mfc_iter *it, loff_t pos) 453c8d61968SYuval Mintz { 454c8d61968SYuval Mintz return NULL; 455c8d61968SYuval Mintz } 456c8d61968SYuval Mintz 457c8d61968SYuval Mintz static inline void *mr_mfc_seq_next(struct seq_file *seq, void *v, 458c8d61968SYuval Mintz loff_t *pos) 459c8d61968SYuval Mintz { 460c8d61968SYuval Mintz return NULL; 461c8d61968SYuval Mintz } 462c8d61968SYuval Mintz 463c8d61968SYuval Mintz static inline void *mr_mfc_seq_start(struct seq_file *seq, loff_t *pos, 464c8d61968SYuval Mintz struct mr_table *mrt, spinlock_t *lock) 465c8d61968SYuval Mintz { 466c8d61968SYuval Mintz return NULL; 467c8d61968SYuval Mintz } 468c8d61968SYuval Mintz 469c8d61968SYuval Mintz static inline void mr_mfc_seq_stop(struct seq_file *seq, void *v) 470c8d61968SYuval Mintz { 471c8d61968SYuval Mintz } 472c8d61968SYuval Mintz #endif 473c8d61968SYuval Mintz #endif 4746853f21fSYuval Mintz #endif 475