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 (cap (at) di.fc.ul.pt) 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__) && !defined(DIV_ROUND_UP) 47 #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y)) 48 #endif 49 50 typedef struct if_set { 51 if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; 52 } if_set; 53 54 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) 55 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) 56 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) 57 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) 58 #define IF_ZERO(p) bzero(p, sizeof(*(p))) 59 60 /* 61 * Passed by mrouted for an MRT_ADD_MIF - again we use the 62 * mrouted 3.6 structures for compatibility 63 */ 64 65 struct mif6ctl { 66 mifi_t mif6c_mifi; /* Index of MIF */ 67 unsigned char mif6c_flags; /* MIFF_ flags */ 68 unsigned char vifc_threshold; /* ttl limit */ 69 __u16 mif6c_pifi; /* the index of the physical IF */ 70 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ 71 }; 72 73 #define MIFF_REGISTER 0x1 /* register vif */ 74 75 /* 76 * Cache manipulation structures for mrouted and PIMd 77 */ 78 79 struct mf6cctl { 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 struct sockaddr_in6 src; 92 struct sockaddr_in6 grp; 93 unsigned long pktcnt; 94 unsigned long bytecnt; 95 unsigned long wrong_if; 96 }; 97 98 /* 99 * To get vif packet counts 100 */ 101 102 struct sioc_mif_req6 { 103 mifi_t mifi; /* Which iface */ 104 unsigned long icount; /* In packets */ 105 unsigned long ocount; /* Out packets */ 106 unsigned long ibytes; /* In bytes */ 107 unsigned long obytes; /* Out bytes */ 108 }; 109 110 /* 111 * That's all usermode folks 112 */ 113 114 #ifdef __KERNEL__ 115 116 #include <linux/pim.h> 117 #include <linux/skbuff.h> /* for struct sk_buff_head */ 118 #include <net/net_namespace.h> 119 120 #ifdef CONFIG_IPV6_MROUTE 121 static inline int ip6_mroute_opt(int opt) 122 { 123 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); 124 } 125 #else 126 static inline int ip6_mroute_opt(int opt) 127 { 128 return 0; 129 } 130 #endif 131 132 struct sock; 133 134 #ifdef CONFIG_IPV6_MROUTE 135 extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); 136 extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); 137 extern int ip6_mr_input(struct sk_buff *skb); 138 extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); 139 extern int ip6_mr_init(void); 140 extern void ip6_mr_cleanup(void); 141 #else 142 static inline 143 int ip6_mroute_setsockopt(struct sock *sock, 144 int optname, char __user *optval, unsigned int optlen) 145 { 146 return -ENOPROTOOPT; 147 } 148 149 static inline 150 int ip6_mroute_getsockopt(struct sock *sock, 151 int optname, char __user *optval, int __user *optlen) 152 { 153 return -ENOPROTOOPT; 154 } 155 156 static inline 157 int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) 158 { 159 return -ENOIOCTLCMD; 160 } 161 162 static inline int ip6_mr_init(void) 163 { 164 return 0; 165 } 166 167 static inline void ip6_mr_cleanup(void) 168 { 169 return; 170 } 171 #endif 172 173 struct mif_device { 174 struct net_device *dev; /* Device we are using */ 175 unsigned long bytes_in,bytes_out; 176 unsigned long pkt_in,pkt_out; /* Statistics */ 177 unsigned long rate_limit; /* Traffic shaping (NI) */ 178 unsigned char threshold; /* TTL threshold */ 179 unsigned short flags; /* Control flags */ 180 int link; /* Physical interface index */ 181 }; 182 183 #define VIFF_STATIC 0x8000 184 185 struct mfc6_cache { 186 struct list_head list; 187 struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ 188 struct in6_addr mf6c_origin; /* Source of packet */ 189 mifi_t mf6c_parent; /* Source interface */ 190 int mfc_flags; /* Flags on line */ 191 192 union { 193 struct { 194 unsigned long expires; 195 struct sk_buff_head unresolved; /* Unresolved buffers */ 196 } unres; 197 struct { 198 unsigned long last_assert; 199 int minvif; 200 int maxvif; 201 unsigned long bytes; 202 unsigned long pkt; 203 unsigned long wrong_if; 204 unsigned char ttls[MAXMIFS]; /* TTL thresholds */ 205 } res; 206 } mfc_un; 207 }; 208 209 #define MFC_STATIC 1 210 #define MFC_NOTIFY 2 211 212 #define MFC6_LINES 64 213 214 #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ 215 (__force u32)(a)->s6_addr32[1] ^ \ 216 (__force u32)(a)->s6_addr32[2] ^ \ 217 (__force u32)(a)->s6_addr32[3] ^ \ 218 (__force u32)(g)->s6_addr32[0] ^ \ 219 (__force u32)(g)->s6_addr32[1] ^ \ 220 (__force u32)(g)->s6_addr32[2] ^ \ 221 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) 222 223 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ 224 225 #endif 226 227 #ifdef __KERNEL__ 228 struct rtmsg; 229 extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, 230 struct rtmsg *rtm, int nowait); 231 232 #ifdef CONFIG_IPV6_MROUTE 233 extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb); 234 extern int ip6mr_sk_done(struct sock *sk); 235 #else 236 static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb) 237 { 238 return NULL; 239 } 240 static inline int ip6mr_sk_done(struct sock *sk) 241 { 242 return 0; 243 } 244 #endif 245 #endif 246 247 /* 248 * Structure used to communicate from kernel to multicast router. 249 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} 250 * used for IPv4 implementation). This is because this structure will be passed via an 251 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after 252 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) 253 */ 254 255 struct mrt6msg { 256 #define MRT6MSG_NOCACHE 1 257 #define MRT6MSG_WRONGMIF 2 258 #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ 259 __u8 im6_mbz; /* must be zero */ 260 __u8 im6_msgtype; /* what type of message */ 261 __u16 im6_mif; /* mif rec'd on */ 262 __u32 im6_pad; /* padding for 64 bit arch */ 263 struct in6_addr im6_src, im6_dst; 264 }; 265 266 #endif 267
