1 #ifndef __LINUX_MROUTE6_H 2 #define __LINUX_MROUTE6_H 3 4 #include <linux/types.h> 5 #include <linux/sockios.h> 6 7 /* 8 * Based on the MROUTING 3.5 defines primarily to keep 9 * source compatibility with BSD. 10 * 11 * See the pim6sd code for the original history. 12 * 13 * Protocol Independent Multicast (PIM) data structures included 14 * Carlos Picoto ([email protected]) 15 * 16 */ 17 18 #define MRT6_BASE 200 19 #define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */ 20 #define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */ 21 #define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */ 22 #define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */ 23 #define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */ 24 #define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */ 25 #define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */ 26 #define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */ 27 #define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */ 28 #define MRT6_TABLE (MRT6_BASE+9) /* Specify mroute table ID */ 29 30 #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */ 31 #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1) 32 #define SIOCGETRPF (SIOCPROTOPRIVATE+2) 33 34 #define MAXMIFS 32 35 typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */ 36 typedef unsigned short mifi_t; 37 #define ALL_MIFS ((mifi_t)(-1)) 38 39 #ifndef IF_SETSIZE 40 #define IF_SETSIZE 256 41 #endif 42 43 typedef __u32 if_mask; 44 #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */ 45 46 #if !defined(__KERNEL__) 47 #if !defined(DIV_ROUND_UP) 48 #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y)) 49 #endif 50 #endif 51 52 typedef struct if_set { 53 if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; 54 } if_set; 55 56 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) 57 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) 58 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) 59 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) 60 #define IF_ZERO(p) bzero(p, sizeof(*(p))) 61 62 /* 63 * Passed by mrouted for an MRT_ADD_MIF - again we use the 64 * mrouted 3.6 structures for compatibility 65 */ 66 67 struct mif6ctl { 68 mifi_t mif6c_mifi; /* Index of MIF */ 69 unsigned char mif6c_flags; /* MIFF_ flags */ 70 unsigned char vifc_threshold; /* ttl limit */ 71 __u16 mif6c_pifi; /* the index of the physical IF */ 72 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ 73 }; 74 75 #define MIFF_REGISTER 0x1 /* register vif */ 76 77 /* 78 * Cache manipulation structures for mrouted and PIMd 79 */ 80 81 struct mf6cctl { 82 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ 83 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ 84 mifi_t mf6cc_parent; /* Where it arrived */ 85 struct if_set mf6cc_ifset; /* Where it is going */ 86 }; 87 88 /* 89 * Group count retrieval for pim6sd 90 */ 91 92 struct sioc_sg_req6 { 93 struct sockaddr_in6 src; 94 struct sockaddr_in6 grp; 95 unsigned long pktcnt; 96 unsigned long bytecnt; 97 unsigned long wrong_if; 98 }; 99 100 /* 101 * To get vif packet counts 102 */ 103 104 struct sioc_mif_req6 { 105 mifi_t mifi; /* Which iface */ 106 unsigned long icount; /* In packets */ 107 unsigned long ocount; /* Out packets */ 108 unsigned long ibytes; /* In bytes */ 109 unsigned long obytes; /* Out bytes */ 110 }; 111 112 /* 113 * That's all usermode folks 114 */ 115 116 #ifdef __KERNEL__ 117 118 #include <linux/pim.h> 119 #include <linux/skbuff.h> /* for struct sk_buff_head */ 120 #include <net/net_namespace.h> 121 122 #ifdef CONFIG_IPV6_MROUTE 123 static inline int ip6_mroute_opt(int opt) 124 { 125 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); 126 } 127 #else 128 static inline int ip6_mroute_opt(int opt) 129 { 130 return 0; 131 } 132 #endif 133 134 struct sock; 135 136 #ifdef CONFIG_IPV6_MROUTE 137 extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); 138 extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); 139 extern int ip6_mr_input(struct sk_buff *skb); 140 extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); 141 extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); 142 extern int ip6_mr_init(void); 143 extern void ip6_mr_cleanup(void); 144 #else 145 static inline 146 int ip6_mroute_setsockopt(struct sock *sock, 147 int optname, char __user *optval, unsigned int optlen) 148 { 149 return -ENOPROTOOPT; 150 } 151 152 static inline 153 int ip6_mroute_getsockopt(struct sock *sock, 154 int optname, char __user *optval, int __user *optlen) 155 { 156 return -ENOPROTOOPT; 157 } 158 159 static inline 160 int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) 161 { 162 return -ENOIOCTLCMD; 163 } 164 165 static inline int ip6_mr_init(void) 166 { 167 return 0; 168 } 169 170 static inline void ip6_mr_cleanup(void) 171 { 172 return; 173 } 174 #endif 175 176 struct mif_device { 177 struct net_device *dev; /* Device we are using */ 178 unsigned long bytes_in,bytes_out; 179 unsigned long pkt_in,pkt_out; /* Statistics */ 180 unsigned long rate_limit; /* Traffic shaping (NI) */ 181 unsigned char threshold; /* TTL threshold */ 182 unsigned short flags; /* Control flags */ 183 int link; /* Physical interface index */ 184 }; 185 186 #define VIFF_STATIC 0x8000 187 188 struct mfc6_cache { 189 struct list_head list; 190 struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ 191 struct in6_addr mf6c_origin; /* Source of packet */ 192 mifi_t mf6c_parent; /* Source interface */ 193 int mfc_flags; /* Flags on line */ 194 195 union { 196 struct { 197 unsigned long expires; 198 struct sk_buff_head unresolved; /* Unresolved buffers */ 199 } unres; 200 struct { 201 unsigned long last_assert; 202 int minvif; 203 int maxvif; 204 unsigned long bytes; 205 unsigned long pkt; 206 unsigned long wrong_if; 207 unsigned char ttls[MAXMIFS]; /* TTL thresholds */ 208 } res; 209 } mfc_un; 210 }; 211 212 #define MFC_STATIC 1 213 #define MFC_NOTIFY 2 214 215 #define MFC6_LINES 64 216 217 #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ 218 (__force u32)(a)->s6_addr32[1] ^ \ 219 (__force u32)(a)->s6_addr32[2] ^ \ 220 (__force u32)(a)->s6_addr32[3] ^ \ 221 (__force u32)(g)->s6_addr32[0] ^ \ 222 (__force u32)(g)->s6_addr32[1] ^ \ 223 (__force u32)(g)->s6_addr32[2] ^ \ 224 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) 225 226 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ 227 228 #endif 229 230 #ifdef __KERNEL__ 231 struct rtmsg; 232 extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, 233 struct rtmsg *rtm, int nowait); 234 235 #ifdef CONFIG_IPV6_MROUTE 236 extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb); 237 extern int ip6mr_sk_done(struct sock *sk); 238 #else 239 static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb) 240 { 241 return NULL; 242 } 243 static inline int ip6mr_sk_done(struct sock *sk) 244 { 245 return 0; 246 } 247 #endif 248 #endif 249 250 /* 251 * Structure used to communicate from kernel to multicast router. 252 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} 253 * used for IPv4 implementation). This is because this structure will be passed via an 254 * IPv6 raw socket, on which an application will only receiver the payload i.e the data after 255 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) 256 */ 257 258 struct mrt6msg { 259 #define MRT6MSG_NOCACHE 1 260 #define MRT6MSG_WRONGMIF 2 261 #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ 262 __u8 im6_mbz; /* must be zero */ 263 __u8 im6_msgtype; /* what type of message */ 264 __u16 im6_mif; /* mif rec'd on */ 265 __u32 im6_pad; /* padding for 64 bit arch */ 266 struct in6_addr im6_src, im6_dst; 267 }; 268 269 #endif 270