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 29 #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */ 30 #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1) 31 #define SIOCGETRPF (SIOCPROTOPRIVATE+2) 32 33 #define MAXMIFS 32 34 typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */ 35 typedef unsigned short mifi_t; 36 #define ALL_MIFS ((mifi_t)(-1)) 37 38 #ifndef IF_SETSIZE 39 #define IF_SETSIZE 256 40 #endif 41 42 typedef __u32 if_mask; 43 #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */ 44 45 #if !defined(__KERNEL__) && !defined(DIV_ROUND_UP) 46 #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y)) 47 #endif 48 49 typedef struct if_set { 50 if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; 51 } if_set; 52 53 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) 54 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) 55 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) 56 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) 57 #define IF_ZERO(p) bzero(p, sizeof(*(p))) 58 59 /* 60 * Passed by mrouted for an MRT_ADD_MIF - again we use the 61 * mrouted 3.6 structures for compatibility 62 */ 63 64 struct mif6ctl { 65 mifi_t mif6c_mifi; /* Index of MIF */ 66 unsigned char mif6c_flags; /* MIFF_ flags */ 67 unsigned char vifc_threshold; /* ttl limit */ 68 u_short mif6c_pifi; /* the index of the physical IF */ 69 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ 70 }; 71 72 #define MIFF_REGISTER 0x1 /* register vif */ 73 74 /* 75 * Cache manipulation structures for mrouted and PIMd 76 */ 77 78 struct mf6cctl 79 { 80 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ 81 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ 82 mifi_t mf6cc_parent; /* Where it arrived */ 83 struct if_set mf6cc_ifset; /* Where it is going */ 84 }; 85 86 /* 87 * Group count retrieval for pim6sd 88 */ 89 90 struct sioc_sg_req6 91 { 92 struct sockaddr_in6 src; 93 struct sockaddr_in6 grp; 94 unsigned long pktcnt; 95 unsigned long bytecnt; 96 unsigned long wrong_if; 97 }; 98 99 /* 100 * To get vif packet counts 101 */ 102 103 struct sioc_mif_req6 104 { 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 */ 120 121 #ifdef CONFIG_IPV6_MROUTE 122 static inline int ip6_mroute_opt(int opt) 123 { 124 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); 125 } 126 #else 127 static inline int ip6_mroute_opt(int opt) 128 { 129 return 0; 130 } 131 #endif 132 133 struct sock; 134 135 #ifdef CONFIG_IPV6_MROUTE 136 extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, int); 137 extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); 138 extern int ip6_mr_input(struct sk_buff *skb); 139 extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); 140 extern int ip6_mr_init(void); 141 extern void ip6_mr_cleanup(void); 142 #else 143 static inline 144 int ip6_mroute_setsockopt(struct sock *sock, 145 int optname, char __user *optval, int optlen) 146 { 147 return -ENOPROTOOPT; 148 } 149 150 static inline 151 int ip6_mroute_getsockopt(struct sock *sock, 152 int optname, char __user *optval, int __user *optlen) 153 { 154 return -ENOPROTOOPT; 155 } 156 157 static inline 158 int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) 159 { 160 return -ENOIOCTLCMD; 161 } 162 163 static inline int ip6_mr_init(void) 164 { 165 return 0; 166 } 167 168 static inline void ip6_mr_cleanup(void) 169 { 170 return; 171 } 172 #endif 173 174 struct mif_device 175 { 176 struct net_device *dev; /* Device we are using */ 177 unsigned long bytes_in,bytes_out; 178 unsigned long pkt_in,pkt_out; /* Statistics */ 179 unsigned long rate_limit; /* Traffic shaping (NI) */ 180 unsigned char threshold; /* TTL threshold */ 181 unsigned short flags; /* Control flags */ 182 int link; /* Physical interface index */ 183 }; 184 185 #define VIFF_STATIC 0x8000 186 187 struct mfc6_cache 188 { 189 struct mfc6_cache *next; /* Next entry on cache line */ 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 sk_buff *skb, struct rtmsg *rtm, int nowait); 233 234 #ifdef CONFIG_IPV6_MROUTE 235 extern struct sock *mroute6_socket; 236 extern int ip6mr_sk_done(struct sock *sk); 237 #else 238 #define mroute6_socket NULL 239 static inline int ip6mr_sk_done(struct sock *sk) { return 0; } 240 #endif 241 #endif 242 243 /* 244 * Structure used to communicate from kernel to multicast router. 245 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} 246 * used for IPv4 implementation). This is because this structure will be passed via an 247 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after 248 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) 249 */ 250 251 struct mrt6msg { 252 #define MRT6MSG_NOCACHE 1 253 #define MRT6MSG_WRONGMIF 2 254 #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ 255 __u8 im6_mbz; /* must be zero */ 256 __u8 im6_msgtype; /* what type of message */ 257 __u16 im6_mif; /* mif rec'd on */ 258 __u32 im6_pad; /* padding for 64 bit arch */ 259 struct in6_addr im6_src, im6_dst; 260 }; 261 262 #endif 263