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 __u16 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 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ 80 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ 81 mifi_t mf6cc_parent; /* Where it arrived */ 82 struct if_set mf6cc_ifset; /* Where it is going */ 83 }; 84 85 /* 86 * Group count retrieval for pim6sd 87 */ 88 89 struct sioc_sg_req6 { 90 struct sockaddr_in6 src; 91 struct sockaddr_in6 grp; 92 unsigned long pktcnt; 93 unsigned long bytecnt; 94 unsigned long wrong_if; 95 }; 96 97 /* 98 * To get vif packet counts 99 */ 100 101 struct sioc_mif_req6 { 102 mifi_t mifi; /* Which iface */ 103 unsigned long icount; /* In packets */ 104 unsigned long ocount; /* Out packets */ 105 unsigned long ibytes; /* In bytes */ 106 unsigned long obytes; /* Out bytes */ 107 }; 108 109 /* 110 * That's all usermode folks 111 */ 112 113 #ifdef __KERNEL__ 114 115 #include <linux/pim.h> 116 #include <linux/skbuff.h> /* for struct sk_buff_head */ 117 #include <net/net_namespace.h> 118 119 #ifdef CONFIG_IPV6_MROUTE 120 static inline int ip6_mroute_opt(int opt) 121 { 122 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); 123 } 124 #else 125 static inline int ip6_mroute_opt(int opt) 126 { 127 return 0; 128 } 129 #endif 130 131 struct sock; 132 133 #ifdef CONFIG_IPV6_MROUTE 134 extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); 135 extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); 136 extern int ip6_mr_input(struct sk_buff *skb); 137 extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); 138 extern int ip6_mr_init(void); 139 extern void ip6_mr_cleanup(void); 140 #else 141 static inline 142 int ip6_mroute_setsockopt(struct sock *sock, 143 int optname, char __user *optval, unsigned int optlen) 144 { 145 return -ENOPROTOOPT; 146 } 147 148 static inline 149 int ip6_mroute_getsockopt(struct sock *sock, 150 int optname, char __user *optval, int __user *optlen) 151 { 152 return -ENOPROTOOPT; 153 } 154 155 static inline 156 int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) 157 { 158 return -ENOIOCTLCMD; 159 } 160 161 static inline int ip6_mr_init(void) 162 { 163 return 0; 164 } 165 166 static inline void ip6_mr_cleanup(void) 167 { 168 return; 169 } 170 #endif 171 172 struct mif_device { 173 struct net_device *dev; /* Device we are using */ 174 unsigned long bytes_in,bytes_out; 175 unsigned long pkt_in,pkt_out; /* Statistics */ 176 unsigned long rate_limit; /* Traffic shaping (NI) */ 177 unsigned char threshold; /* TTL threshold */ 178 unsigned short flags; /* Control flags */ 179 int link; /* Physical interface index */ 180 }; 181 182 #define VIFF_STATIC 0x8000 183 184 struct mfc6_cache { 185 struct mfc6_cache *next; /* Next entry on cache line */ 186 #ifdef CONFIG_NET_NS 187 struct net *mfc6_net; 188 #endif 189 struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ 190 struct in6_addr mf6c_origin; /* Source of packet */ 191 mifi_t mf6c_parent; /* Source interface */ 192 int mfc_flags; /* Flags on line */ 193 194 union { 195 struct { 196 unsigned long expires; 197 struct sk_buff_head unresolved; /* Unresolved buffers */ 198 } unres; 199 struct { 200 unsigned long last_assert; 201 int minvif; 202 int maxvif; 203 unsigned long bytes; 204 unsigned long pkt; 205 unsigned long wrong_if; 206 unsigned char ttls[MAXMIFS]; /* TTL thresholds */ 207 } res; 208 } mfc_un; 209 }; 210 211 static inline 212 struct net *mfc6_net(const struct mfc6_cache *mfc) 213 { 214 return read_pnet(&mfc->mfc6_net); 215 } 216 217 static inline 218 void mfc6_net_set(struct mfc6_cache *mfc, struct net *net) 219 { 220 write_pnet(&mfc->mfc6_net, hold_net(net)); 221 } 222 223 #define MFC_STATIC 1 224 #define MFC_NOTIFY 2 225 226 #define MFC6_LINES 64 227 228 #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ 229 (__force u32)(a)->s6_addr32[1] ^ \ 230 (__force u32)(a)->s6_addr32[2] ^ \ 231 (__force u32)(a)->s6_addr32[3] ^ \ 232 (__force u32)(g)->s6_addr32[0] ^ \ 233 (__force u32)(g)->s6_addr32[1] ^ \ 234 (__force u32)(g)->s6_addr32[2] ^ \ 235 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) 236 237 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ 238 239 #endif 240 241 #ifdef __KERNEL__ 242 struct rtmsg; 243 extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, 244 struct rtmsg *rtm, int nowait); 245 246 #ifdef CONFIG_IPV6_MROUTE 247 static inline struct sock *mroute6_socket(struct net *net) 248 { 249 return net->ipv6.mroute6_sk; 250 } 251 extern int ip6mr_sk_done(struct sock *sk); 252 #else 253 static inline struct sock *mroute6_socket(struct net *net) { return NULL; } 254 static inline int ip6mr_sk_done(struct sock *sk) { return 0; } 255 #endif 256 #endif 257 258 /* 259 * Structure used to communicate from kernel to multicast router. 260 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} 261 * used for IPv4 implementation). This is because this structure will be passed via an 262 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after 263 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) 264 */ 265 266 struct mrt6msg { 267 #define MRT6MSG_NOCACHE 1 268 #define MRT6MSG_WRONGMIF 2 269 #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ 270 __u8 im6_mbz; /* must be zero */ 271 __u8 im6_msgtype; /* what type of message */ 272 __u16 im6_mif; /* mif rec'd on */ 273 __u32 im6_pad; /* padding for 64 bit arch */ 274 struct in6_addr im6_src, im6_dst; 275 }; 276 277 #endif 278