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422 | giacomo | 1 | #ifndef __LINUX_MROUTE_H |
2 | #define __LINUX_MROUTE_H |
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3 | |||
4 | #include <linux/sockios.h> |
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5 | #include <linux/in.h> |
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6 | |||
7 | /* |
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8 | * Based on the MROUTING 3.5 defines primarily to keep |
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9 | * source compatibility with BSD. |
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10 | * |
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11 | * See the mrouted code for the original history. |
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12 | * |
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13 | * Protocol Independent Multicast (PIM) data structures included |
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14 | * Carlos Picoto (cap@di.fc.ul.pt) |
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15 | * |
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16 | */ |
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17 | |||
18 | #define MRT_BASE 200 |
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19 | #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */ |
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20 | #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */ |
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21 | #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */ |
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22 | #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */ |
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23 | #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */ |
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24 | #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */ |
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25 | #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */ |
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26 | #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */ |
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27 | #define MRT_PIM (MRT_BASE+8) /* enable PIM code */ |
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28 | |||
29 | #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */ |
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30 | #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) |
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31 | #define SIOCGETRPF (SIOCPROTOPRIVATE+2) |
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32 | |||
33 | #define MAXVIFS 32 |
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34 | typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */ |
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35 | typedef unsigned short vifi_t; |
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36 | #define ALL_VIFS ((vifi_t)(-1)) |
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37 | |||
38 | /* |
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39 | * Same idea as select |
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40 | */ |
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41 | |||
42 | #define VIFM_SET(n,m) ((m)|=(1<<(n))) |
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43 | #define VIFM_CLR(n,m) ((m)&=~(1<<(n))) |
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44 | #define VIFM_ISSET(n,m) ((m)&(1<<(n))) |
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45 | #define VIFM_CLRALL(m) ((m)=0) |
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46 | #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom)) |
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47 | #define VIFM_SAME(m1,m2) ((m1)==(m2)) |
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48 | |||
49 | /* |
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50 | * Passed by mrouted for an MRT_ADD_VIF - again we use the |
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51 | * mrouted 3.6 structures for compatibility |
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52 | */ |
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53 | |||
54 | struct vifctl { |
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55 | vifi_t vifc_vifi; /* Index of VIF */ |
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56 | unsigned char vifc_flags; /* VIFF_ flags */ |
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57 | unsigned char vifc_threshold; /* ttl limit */ |
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58 | unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ |
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59 | struct in_addr vifc_lcl_addr; /* Our address */ |
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60 | struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ |
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61 | }; |
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62 | |||
63 | #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ |
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64 | #define VIFF_SRCRT 0x2 /* NI */ |
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65 | #define VIFF_REGISTER 0x4 /* register vif */ |
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66 | |||
67 | /* |
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68 | * Cache manipulation structures for mrouted and PIMd |
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69 | */ |
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70 | |||
71 | struct mfcctl |
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72 | { |
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73 | struct in_addr mfcc_origin; /* Origin of mcast */ |
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74 | struct in_addr mfcc_mcastgrp; /* Group in question */ |
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75 | vifi_t mfcc_parent; /* Where it arrived */ |
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76 | unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ |
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77 | unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ |
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78 | unsigned int mfcc_byte_cnt; |
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79 | unsigned int mfcc_wrong_if; |
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80 | int mfcc_expire; |
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81 | }; |
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82 | |||
83 | /* |
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84 | * Group count retrieval for mrouted |
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85 | */ |
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86 | |||
87 | struct sioc_sg_req |
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88 | { |
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89 | struct in_addr src; |
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90 | struct in_addr grp; |
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91 | unsigned long pktcnt; |
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92 | unsigned long bytecnt; |
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93 | unsigned long wrong_if; |
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94 | }; |
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95 | |||
96 | /* |
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97 | * To get vif packet counts |
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98 | */ |
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99 | |||
100 | struct sioc_vif_req |
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101 | { |
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102 | vifi_t vifi; /* Which iface */ |
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103 | unsigned long icount; /* In packets */ |
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104 | unsigned long ocount; /* Out packets */ |
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105 | unsigned long ibytes; /* In bytes */ |
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106 | unsigned long obytes; /* Out bytes */ |
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107 | }; |
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108 | |||
109 | /* |
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110 | * This is the format the mroute daemon expects to see IGMP control |
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111 | * data. Magically happens to be like an IP packet as per the original |
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112 | */ |
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113 | |||
114 | struct igmpmsg |
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115 | { |
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116 | __u32 unused1,unused2; |
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117 | unsigned char im_msgtype; /* What is this */ |
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118 | unsigned char im_mbz; /* Must be zero */ |
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119 | unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ |
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120 | unsigned char unused3; |
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121 | struct in_addr im_src,im_dst; |
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122 | }; |
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123 | |||
124 | /* |
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125 | * That's all usermode folks |
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126 | */ |
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127 | |||
128 | #ifdef __KERNEL__ |
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129 | #include <net/sock.h> |
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130 | |||
131 | extern int ip_mroute_setsockopt(struct sock *, int, char *, int); |
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132 | extern int ip_mroute_getsockopt(struct sock *, int, char *, int *); |
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133 | extern int ipmr_ioctl(struct sock *sk, int cmd, unsigned long arg); |
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134 | extern void ip_mr_init(void); |
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135 | |||
136 | |||
137 | struct vif_device |
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138 | { |
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139 | struct net_device *dev; /* Device we are using */ |
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140 | unsigned long bytes_in,bytes_out; |
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141 | unsigned long pkt_in,pkt_out; /* Statistics */ |
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142 | unsigned long rate_limit; /* Traffic shaping (NI) */ |
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143 | unsigned char threshold; /* TTL threshold */ |
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144 | unsigned short flags; /* Control flags */ |
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145 | __u32 local,remote; /* Addresses(remote for tunnels)*/ |
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146 | int link; /* Physical interface index */ |
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147 | }; |
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148 | |||
149 | #define VIFF_STATIC 0x8000 |
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150 | |||
151 | struct mfc_cache |
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152 | { |
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153 | struct mfc_cache *next; /* Next entry on cache line */ |
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154 | __u32 mfc_mcastgrp; /* Group the entry belongs to */ |
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155 | __u32 mfc_origin; /* Source of packet */ |
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156 | vifi_t mfc_parent; /* Source interface */ |
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157 | int mfc_flags; /* Flags on line */ |
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158 | |||
159 | union { |
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160 | struct { |
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161 | unsigned long expires; |
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162 | struct sk_buff_head unresolved; /* Unresolved buffers */ |
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163 | } unres; |
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164 | struct { |
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165 | unsigned long last_assert; |
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166 | int minvif; |
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167 | int maxvif; |
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168 | unsigned long bytes; |
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169 | unsigned long pkt; |
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170 | unsigned long wrong_if; |
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171 | unsigned char ttls[MAXVIFS]; /* TTL thresholds */ |
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172 | } res; |
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173 | } mfc_un; |
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174 | }; |
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175 | |||
176 | #define MFC_STATIC 1 |
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177 | #define MFC_NOTIFY 2 |
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178 | |||
179 | #define MFC_LINES 64 |
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180 | |||
181 | #ifdef __BIG_ENDIAN |
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182 | #define MFC_HASH(a,b) ((((a)>>24)^((b)>>26))&(MFC_LINES-1)) |
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183 | #else |
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184 | #define MFC_HASH(a,b) (((a)^((b)>>2))&(MFC_LINES-1)) |
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185 | #endif |
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186 | |||
187 | #endif |
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188 | |||
189 | |||
190 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ |
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191 | |||
192 | /* |
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193 | * Pseudo messages used by mrouted |
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194 | */ |
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195 | |||
196 | #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ |
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197 | #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ |
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198 | #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ |
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199 | |||
200 | #ifdef __KERNEL__ |
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201 | |||
202 | #define PIM_V1_VERSION __constant_htonl(0x10000000) |
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203 | #define PIM_V1_REGISTER 1 |
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204 | |||
205 | #define PIM_VERSION 2 |
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206 | #define PIM_REGISTER 1 |
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207 | |||
208 | #define PIM_NULL_REGISTER __constant_htonl(0x40000000) |
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209 | |||
210 | /* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */ |
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211 | |||
212 | struct pimreghdr |
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213 | { |
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214 | __u8 type; |
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215 | __u8 reserved; |
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216 | __u16 csum; |
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217 | __u32 flags; |
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218 | }; |
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219 | |||
220 | extern int pim_rcv_v1(struct sk_buff *); |
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221 | |||
222 | struct rtmsg; |
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223 | extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait); |
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224 | #endif |
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225 | |||
226 | #endif |