1 #ifndef __LINUX_MROUTE_H 2 #define __LINUX_MROUTE_H 3 4 #include <linux/sockios.h> 5 #include <linux/types.h> 6 #ifdef __KERNEL__ 7 #include <linux/in.h> 8 #endif 9 #include <linux/pim.h> 10 11 /* 12 * Based on the MROUTING 3.5 defines primarily to keep 13 * source compatibility with BSD. 14 * 15 * See the mrouted code for the original history. 16 * 17 * Protocol Independent Multicast (PIM) data structures included 18 * Carlos Picoto ([email protected]) 19 * 20 */ 21 22 #define MRT_BASE 200 23 #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */ 24 #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */ 25 #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */ 26 #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */ 27 #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */ 28 #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */ 29 #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */ 30 #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */ 31 #define MRT_PIM (MRT_BASE+8) /* enable PIM code */ 32 33 #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */ 34 #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) 35 #define SIOCGETRPF (SIOCPROTOPRIVATE+2) 36 37 #define MAXVIFS 32 38 typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */ 39 typedef unsigned short vifi_t; 40 #define ALL_VIFS ((vifi_t)(-1)) 41 42 /* 43 * Same idea as select 44 */ 45 46 #define VIFM_SET(n,m) ((m)|=(1<<(n))) 47 #define VIFM_CLR(n,m) ((m)&=~(1<<(n))) 48 #define VIFM_ISSET(n,m) ((m)&(1<<(n))) 49 #define VIFM_CLRALL(m) ((m)=0) 50 #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom)) 51 #define VIFM_SAME(m1,m2) ((m1)==(m2)) 52 53 /* 54 * Passed by mrouted for an MRT_ADD_VIF - again we use the 55 * mrouted 3.6 structures for compatibility 56 */ 57 58 struct vifctl { 59 vifi_t vifc_vifi; /* Index of VIF */ 60 unsigned char vifc_flags; /* VIFF_ flags */ 61 unsigned char vifc_threshold; /* ttl limit */ 62 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ 63 struct in_addr vifc_lcl_addr; /* Our address */ 64 struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ 65 }; 66 67 #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ 68 #define VIFF_SRCRT 0x2 /* NI */ 69 #define VIFF_REGISTER 0x4 /* register vif */ 70 71 /* 72 * Cache manipulation structures for mrouted and PIMd 73 */ 74 75 struct mfcctl 76 { 77 struct in_addr mfcc_origin; /* Origin of mcast */ 78 struct in_addr mfcc_mcastgrp; /* Group in question */ 79 vifi_t mfcc_parent; /* Where it arrived */ 80 unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ 81 unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ 82 unsigned int mfcc_byte_cnt; 83 unsigned int mfcc_wrong_if; 84 int mfcc_expire; 85 }; 86 87 /* 88 * Group count retrieval for mrouted 89 */ 90 91 struct sioc_sg_req 92 { 93 struct in_addr src; 94 struct in_addr 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_vif_req 105 { 106 vifi_t vifi; /* Which iface */ 107 unsigned long icount; /* In packets */ 108 unsigned long ocount; /* Out packets */ 109 unsigned long ibytes; /* In bytes */ 110 unsigned long obytes; /* Out bytes */ 111 }; 112 113 /* 114 * This is the format the mroute daemon expects to see IGMP control 115 * data. Magically happens to be like an IP packet as per the original 116 */ 117 118 struct igmpmsg 119 { 120 __u32 unused1,unused2; 121 unsigned char im_msgtype; /* What is this */ 122 unsigned char im_mbz; /* Must be zero */ 123 unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ 124 unsigned char unused3; 125 struct in_addr im_src,im_dst; 126 }; 127 128 /* 129 * That's all usermode folks 130 */ 131 132 #ifdef __KERNEL__ 133 #include <net/sock.h> 134 135 #ifdef CONFIG_IP_MROUTE 136 static inline int ip_mroute_opt(int opt) 137 { 138 return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10); 139 } 140 #else 141 static inline int ip_mroute_opt(int opt) 142 { 143 return 0; 144 } 145 #endif 146 147 extern int ip_mroute_setsockopt(struct sock *, int, char __user *, int); 148 extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); 149 extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); 150 extern void ip_mr_init(void); 151 152 153 struct vif_device 154 { 155 struct net_device *dev; /* Device we are using */ 156 unsigned long bytes_in,bytes_out; 157 unsigned long pkt_in,pkt_out; /* Statistics */ 158 unsigned long rate_limit; /* Traffic shaping (NI) */ 159 unsigned char threshold; /* TTL threshold */ 160 unsigned short flags; /* Control flags */ 161 __be32 local,remote; /* Addresses(remote for tunnels)*/ 162 int link; /* Physical interface index */ 163 }; 164 165 #define VIFF_STATIC 0x8000 166 167 struct mfc_cache 168 { 169 struct mfc_cache *next; /* Next entry on cache line */ 170 __be32 mfc_mcastgrp; /* Group the entry belongs to */ 171 __be32 mfc_origin; /* Source of packet */ 172 vifi_t mfc_parent; /* Source interface */ 173 int mfc_flags; /* Flags on line */ 174 175 union { 176 struct { 177 unsigned long expires; 178 struct sk_buff_head unresolved; /* Unresolved buffers */ 179 } unres; 180 struct { 181 unsigned long last_assert; 182 int minvif; 183 int maxvif; 184 unsigned long bytes; 185 unsigned long pkt; 186 unsigned long wrong_if; 187 unsigned char ttls[MAXVIFS]; /* TTL thresholds */ 188 } res; 189 } mfc_un; 190 }; 191 192 #define MFC_STATIC 1 193 #define MFC_NOTIFY 2 194 195 #define MFC_LINES 64 196 197 #ifdef __BIG_ENDIAN 198 #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) 199 #else 200 #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) 201 #endif 202 203 #endif 204 205 206 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ 207 208 /* 209 * Pseudo messages used by mrouted 210 */ 211 212 #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ 213 #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ 214 #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ 215 216 #ifdef __KERNEL__ 217 struct rtmsg; 218 extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait); 219 #endif 220 221 #endif 222