1 #ifndef __LINUX_MROUTE_H 2 #define __LINUX_MROUTE_H 3 4 #include <linux/in.h> 5 #include <linux/pim.h> 6 #include <net/sock.h> 7 #include <uapi/linux/mroute.h> 8 9 #ifdef CONFIG_IP_MROUTE 10 static inline int ip_mroute_opt(int opt) 11 { 12 return opt >= MRT_BASE && opt <= MRT_MAX; 13 } 14 15 int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); 16 int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); 17 int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); 18 int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); 19 int ip_mr_init(void); 20 #else 21 static inline int ip_mroute_setsockopt(struct sock *sock, int optname, 22 char __user *optval, unsigned int optlen) 23 { 24 return -ENOPROTOOPT; 25 } 26 27 static inline int ip_mroute_getsockopt(struct sock *sock, int optname, 28 char __user *optval, int __user *optlen) 29 { 30 return -ENOPROTOOPT; 31 } 32 33 static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg) 34 { 35 return -ENOIOCTLCMD; 36 } 37 38 static inline int ip_mr_init(void) 39 { 40 return 0; 41 } 42 43 static inline int ip_mroute_opt(int opt) 44 { 45 return 0; 46 } 47 #endif 48 49 struct vif_device { 50 struct net_device *dev; /* Device we are using */ 51 unsigned long bytes_in,bytes_out; 52 unsigned long pkt_in,pkt_out; /* Statistics */ 53 unsigned long rate_limit; /* Traffic shaping (NI) */ 54 unsigned char threshold; /* TTL threshold */ 55 unsigned short flags; /* Control flags */ 56 __be32 local,remote; /* Addresses(remote for tunnels)*/ 57 int link; /* Physical interface index */ 58 }; 59 60 #define VIFF_STATIC 0x8000 61 62 #define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL) 63 #define MFC_LINES 64 64 65 struct mr_table { 66 struct list_head list; 67 possible_net_t net; 68 u32 id; 69 struct sock __rcu *mroute_sk; 70 struct timer_list ipmr_expire_timer; 71 struct list_head mfc_unres_queue; 72 struct list_head mfc_cache_array[MFC_LINES]; 73 struct vif_device vif_table[MAXVIFS]; 74 int maxvif; 75 atomic_t cache_resolve_queue_len; 76 bool mroute_do_assert; 77 bool mroute_do_pim; 78 int mroute_reg_vif_num; 79 }; 80 81 /* mfc_flags: 82 * MFC_STATIC - the entry was added statically (not by a routing daemon) 83 */ 84 enum { 85 MFC_STATIC = BIT(0), 86 }; 87 88 struct mfc_cache { 89 struct list_head list; 90 __be32 mfc_mcastgrp; /* Group the entry belongs to */ 91 __be32 mfc_origin; /* Source of packet */ 92 vifi_t mfc_parent; /* Source interface */ 93 int mfc_flags; /* Flags on line */ 94 95 union { 96 struct { 97 unsigned long expires; 98 struct sk_buff_head unresolved; /* Unresolved buffers */ 99 } unres; 100 struct { 101 unsigned long last_assert; 102 int minvif; 103 int maxvif; 104 unsigned long bytes; 105 unsigned long pkt; 106 unsigned long wrong_if; 107 unsigned char ttls[MAXVIFS]; /* TTL thresholds */ 108 } res; 109 } mfc_un; 110 struct rcu_head rcu; 111 }; 112 113 #ifdef __BIG_ENDIAN 114 #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) 115 #else 116 #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) 117 #endif 118 119 struct rtmsg; 120 int ipmr_get_route(struct net *net, struct sk_buff *skb, 121 __be32 saddr, __be32 daddr, 122 struct rtmsg *rtm, int nowait); 123 #endif 124