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1da177e4 LT |
1 | #ifndef __LINUX_MROUTE_H |
2 | #define __LINUX_MROUTE_H | |
3 | ||
4 | #include <linux/sockios.h> | |
5 | #include <linux/in.h> | |
6 | ||
7 | /* | |
8 | * Based on the MROUTING 3.5 defines primarily to keep | |
9 | * source compatibility with BSD. | |
10 | * | |
11 | * See the mrouted code for the original history. | |
12 | * | |
13 | * Protocol Independent Multicast (PIM) data structures included | |
14 | * Carlos Picoto (cap@di.fc.ul.pt) | |
15 | * | |
16 | */ | |
17 | ||
18 | #define MRT_BASE 200 | |
19 | #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */ | |
20 | #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */ | |
21 | #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */ | |
22 | #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */ | |
23 | #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */ | |
24 | #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */ | |
25 | #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */ | |
26 | #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */ | |
27 | #define MRT_PIM (MRT_BASE+8) /* enable PIM code */ | |
28 | ||
29 | #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */ | |
30 | #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) | |
31 | #define SIOCGETRPF (SIOCPROTOPRIVATE+2) | |
32 | ||
33 | #define MAXVIFS 32 | |
34 | typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */ | |
35 | typedef unsigned short vifi_t; | |
36 | #define ALL_VIFS ((vifi_t)(-1)) | |
37 | ||
38 | /* | |
39 | * Same idea as select | |
40 | */ | |
41 | ||
42 | #define VIFM_SET(n,m) ((m)|=(1<<(n))) | |
43 | #define VIFM_CLR(n,m) ((m)&=~(1<<(n))) | |
44 | #define VIFM_ISSET(n,m) ((m)&(1<<(n))) | |
45 | #define VIFM_CLRALL(m) ((m)=0) | |
46 | #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom)) | |
47 | #define VIFM_SAME(m1,m2) ((m1)==(m2)) | |
48 | ||
49 | /* | |
50 | * Passed by mrouted for an MRT_ADD_VIF - again we use the | |
51 | * mrouted 3.6 structures for compatibility | |
52 | */ | |
53 | ||
54 | struct vifctl { | |
55 | vifi_t vifc_vifi; /* Index of VIF */ | |
56 | unsigned char vifc_flags; /* VIFF_ flags */ | |
57 | unsigned char vifc_threshold; /* ttl limit */ | |
58 | unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ | |
59 | struct in_addr vifc_lcl_addr; /* Our address */ | |
60 | struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ | |
61 | }; | |
62 | ||
63 | #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ | |
64 | #define VIFF_SRCRT 0x2 /* NI */ | |
65 | #define VIFF_REGISTER 0x4 /* register vif */ | |
66 | ||
67 | /* | |
68 | * Cache manipulation structures for mrouted and PIMd | |
69 | */ | |
70 | ||
71 | struct mfcctl | |
72 | { | |
73 | struct in_addr mfcc_origin; /* Origin of mcast */ | |
74 | struct in_addr mfcc_mcastgrp; /* Group in question */ | |
75 | vifi_t mfcc_parent; /* Where it arrived */ | |
76 | unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ | |
77 | unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ | |
78 | unsigned int mfcc_byte_cnt; | |
79 | unsigned int mfcc_wrong_if; | |
80 | int mfcc_expire; | |
81 | }; | |
82 | ||
83 | /* | |
84 | * Group count retrieval for mrouted | |
85 | */ | |
86 | ||
87 | struct sioc_sg_req | |
88 | { | |
89 | struct in_addr src; | |
90 | struct in_addr grp; | |
91 | unsigned long pktcnt; | |
92 | unsigned long bytecnt; | |
93 | unsigned long wrong_if; | |
94 | }; | |
95 | ||
96 | /* | |
97 | * To get vif packet counts | |
98 | */ | |
99 | ||
100 | struct sioc_vif_req | |
101 | { | |
102 | vifi_t vifi; /* 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 | * This is the format the mroute daemon expects to see IGMP control | |
111 | * data. Magically happens to be like an IP packet as per the original | |
112 | */ | |
113 | ||
114 | struct igmpmsg | |
115 | { | |
116 | __u32 unused1,unused2; | |
117 | unsigned char im_msgtype; /* What is this */ | |
118 | unsigned char im_mbz; /* Must be zero */ | |
119 | unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ | |
120 | unsigned char unused3; | |
121 | struct in_addr im_src,im_dst; | |
122 | }; | |
123 | ||
124 | /* | |
125 | * That's all usermode folks | |
126 | */ | |
127 | ||
128 | #ifdef __KERNEL__ | |
129 | #include <net/sock.h> | |
130 | ||
6a9fb947 PE |
131 | #ifdef CONFIG_IP_MROUTE |
132 | static inline int ip_mroute_opt(int opt) | |
133 | { | |
134 | return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10); | |
135 | } | |
136 | #else | |
137 | static inline int ip_mroute_opt(int opt) | |
138 | { | |
139 | return 0; | |
140 | } | |
141 | #endif | |
142 | ||
1da177e4 LT |
143 | extern int ip_mroute_setsockopt(struct sock *, int, char __user *, int); |
144 | extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); | |
145 | extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); | |
146 | extern void ip_mr_init(void); | |
147 | ||
148 | ||
149 | struct vif_device | |
150 | { | |
151 | struct net_device *dev; /* Device we are using */ | |
152 | unsigned long bytes_in,bytes_out; | |
153 | unsigned long pkt_in,pkt_out; /* Statistics */ | |
154 | unsigned long rate_limit; /* Traffic shaping (NI) */ | |
155 | unsigned char threshold; /* TTL threshold */ | |
156 | unsigned short flags; /* Control flags */ | |
114c7844 | 157 | __be32 local,remote; /* Addresses(remote for tunnels)*/ |
1da177e4 LT |
158 | int link; /* Physical interface index */ |
159 | }; | |
160 | ||
161 | #define VIFF_STATIC 0x8000 | |
162 | ||
163 | struct mfc_cache | |
164 | { | |
165 | struct mfc_cache *next; /* Next entry on cache line */ | |
114c7844 AV |
166 | __be32 mfc_mcastgrp; /* Group the entry belongs to */ |
167 | __be32 mfc_origin; /* Source of packet */ | |
1da177e4 LT |
168 | vifi_t mfc_parent; /* Source interface */ |
169 | int mfc_flags; /* Flags on line */ | |
170 | ||
171 | union { | |
172 | struct { | |
173 | unsigned long expires; | |
174 | struct sk_buff_head unresolved; /* Unresolved buffers */ | |
175 | } unres; | |
176 | struct { | |
177 | unsigned long last_assert; | |
178 | int minvif; | |
179 | int maxvif; | |
180 | unsigned long bytes; | |
181 | unsigned long pkt; | |
182 | unsigned long wrong_if; | |
183 | unsigned char ttls[MAXVIFS]; /* TTL thresholds */ | |
184 | } res; | |
185 | } mfc_un; | |
186 | }; | |
187 | ||
188 | #define MFC_STATIC 1 | |
189 | #define MFC_NOTIFY 2 | |
190 | ||
191 | #define MFC_LINES 64 | |
192 | ||
193 | #ifdef __BIG_ENDIAN | |
114c7844 | 194 | #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) |
1da177e4 | 195 | #else |
114c7844 | 196 | #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) |
1da177e4 LT |
197 | #endif |
198 | ||
199 | #endif | |
200 | ||
201 | ||
202 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ | |
203 | ||
204 | /* | |
205 | * Pseudo messages used by mrouted | |
206 | */ | |
207 | ||
208 | #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ | |
209 | #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ | |
210 | #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ | |
211 | ||
212 | #ifdef __KERNEL__ | |
213 | ||
214 | #define PIM_V1_VERSION __constant_htonl(0x10000000) | |
215 | #define PIM_V1_REGISTER 1 | |
216 | ||
217 | #define PIM_VERSION 2 | |
218 | #define PIM_REGISTER 1 | |
219 | ||
220 | #define PIM_NULL_REGISTER __constant_htonl(0x40000000) | |
221 | ||
222 | /* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */ | |
223 | ||
224 | struct pimreghdr | |
225 | { | |
226 | __u8 type; | |
227 | __u8 reserved; | |
1b620154 AV |
228 | __be16 csum; |
229 | __be32 flags; | |
1da177e4 LT |
230 | }; |
231 | ||
232 | extern int pim_rcv_v1(struct sk_buff *); | |
233 | ||
234 | struct rtmsg; | |
235 | extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait); | |
236 | #endif | |
237 | ||
238 | #endif |