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1da177e4 LT |
1 | #ifndef __LINUX_MROUTE_H |
2 | #define __LINUX_MROUTE_H | |
3 | ||
4 | #include <linux/sockios.h> | |
80a9492a YH |
5 | #include <linux/types.h> |
6 | #ifdef __KERNEL__ | |
1da177e4 | 7 | #include <linux/in.h> |
80a9492a | 8 | #endif |
1da177e4 LT |
9 | |
10 | /* | |
11 | * Based on the MROUTING 3.5 defines primarily to keep | |
12 | * source compatibility with BSD. | |
13 | * | |
14 | * See the mrouted code for the original history. | |
15 | * | |
16 | * Protocol Independent Multicast (PIM) data structures included | |
17 | * Carlos Picoto (cap@di.fc.ul.pt) | |
18 | * | |
19 | */ | |
20 | ||
21 | #define MRT_BASE 200 | |
22 | #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */ | |
23 | #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */ | |
24 | #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */ | |
25 | #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */ | |
26 | #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */ | |
27 | #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */ | |
28 | #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */ | |
29 | #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */ | |
30 | #define MRT_PIM (MRT_BASE+8) /* enable PIM code */ | |
31 | ||
32 | #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */ | |
33 | #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) | |
34 | #define SIOCGETRPF (SIOCPROTOPRIVATE+2) | |
35 | ||
36 | #define MAXVIFS 32 | |
37 | typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */ | |
38 | typedef unsigned short vifi_t; | |
39 | #define ALL_VIFS ((vifi_t)(-1)) | |
40 | ||
41 | /* | |
42 | * Same idea as select | |
43 | */ | |
44 | ||
45 | #define VIFM_SET(n,m) ((m)|=(1<<(n))) | |
46 | #define VIFM_CLR(n,m) ((m)&=~(1<<(n))) | |
47 | #define VIFM_ISSET(n,m) ((m)&(1<<(n))) | |
48 | #define VIFM_CLRALL(m) ((m)=0) | |
49 | #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom)) | |
50 | #define VIFM_SAME(m1,m2) ((m1)==(m2)) | |
51 | ||
52 | /* | |
53 | * Passed by mrouted for an MRT_ADD_VIF - again we use the | |
54 | * mrouted 3.6 structures for compatibility | |
55 | */ | |
56 | ||
57 | struct vifctl { | |
58 | vifi_t vifc_vifi; /* Index of VIF */ | |
59 | unsigned char vifc_flags; /* VIFF_ flags */ | |
60 | unsigned char vifc_threshold; /* ttl limit */ | |
61 | unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ | |
ee5e81f0 I |
62 | union { |
63 | struct in_addr vifc_lcl_addr; /* Local interface address */ | |
64 | int vifc_lcl_ifindex; /* Local interface index */ | |
65 | }; | |
1da177e4 LT |
66 | struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ |
67 | }; | |
68 | ||
ee5e81f0 I |
69 | #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ |
70 | #define VIFF_SRCRT 0x2 /* NI */ | |
71 | #define VIFF_REGISTER 0x4 /* register vif */ | |
72 | #define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of | |
73 | vifc_lcl_addr to find an interface */ | |
1da177e4 LT |
74 | |
75 | /* | |
76 | * Cache manipulation structures for mrouted and PIMd | |
77 | */ | |
78 | ||
d94d9fee | 79 | struct mfcctl { |
1da177e4 LT |
80 | struct in_addr mfcc_origin; /* Origin of mcast */ |
81 | struct in_addr mfcc_mcastgrp; /* Group in question */ | |
82 | vifi_t mfcc_parent; /* Where it arrived */ | |
83 | unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ | |
84 | unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ | |
85 | unsigned int mfcc_byte_cnt; | |
86 | unsigned int mfcc_wrong_if; | |
87 | int mfcc_expire; | |
88 | }; | |
89 | ||
90 | /* | |
91 | * Group count retrieval for mrouted | |
92 | */ | |
93 | ||
d94d9fee | 94 | struct sioc_sg_req { |
1da177e4 LT |
95 | struct in_addr src; |
96 | struct in_addr grp; | |
97 | unsigned long pktcnt; | |
98 | unsigned long bytecnt; | |
99 | unsigned long wrong_if; | |
100 | }; | |
101 | ||
102 | /* | |
103 | * To get vif packet counts | |
104 | */ | |
105 | ||
d94d9fee | 106 | struct sioc_vif_req { |
1da177e4 LT |
107 | vifi_t vifi; /* Which iface */ |
108 | unsigned long icount; /* In packets */ | |
109 | unsigned long ocount; /* Out packets */ | |
110 | unsigned long ibytes; /* In bytes */ | |
111 | unsigned long obytes; /* Out bytes */ | |
112 | }; | |
113 | ||
114 | /* | |
115 | * This is the format the mroute daemon expects to see IGMP control | |
116 | * data. Magically happens to be like an IP packet as per the original | |
117 | */ | |
118 | ||
d94d9fee | 119 | struct igmpmsg { |
1da177e4 LT |
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__ | |
7c19a3d2 | 133 | #include <linux/pim.h> |
1da177e4 LT |
134 | #include <net/sock.h> |
135 | ||
6a9fb947 PE |
136 | #ifdef CONFIG_IP_MROUTE |
137 | static inline int ip_mroute_opt(int opt) | |
138 | { | |
139 | return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10); | |
140 | } | |
141 | #else | |
142 | static inline int ip_mroute_opt(int opt) | |
143 | { | |
144 | return 0; | |
145 | } | |
146 | #endif | |
147 | ||
e0835f8f | 148 | #ifdef CONFIG_IP_MROUTE |
b7058842 | 149 | extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); |
1da177e4 LT |
150 | extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); |
151 | extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); | |
03d2f897 | 152 | extern int ip_mr_init(void); |
e0835f8f YH |
153 | #else |
154 | static inline | |
155 | int ip_mroute_setsockopt(struct sock *sock, | |
b7058842 | 156 | int optname, char __user *optval, unsigned int optlen) |
e0835f8f YH |
157 | { |
158 | return -ENOPROTOOPT; | |
159 | } | |
160 | ||
161 | static inline | |
162 | int ip_mroute_getsockopt(struct sock *sock, | |
163 | int optname, char __user *optval, int __user *optlen) | |
164 | { | |
165 | return -ENOPROTOOPT; | |
166 | } | |
167 | ||
168 | static inline | |
169 | int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg) | |
170 | { | |
171 | return -ENOIOCTLCMD; | |
172 | } | |
173 | ||
174 | static inline int ip_mr_init(void) | |
175 | { | |
176 | return 0; | |
177 | } | |
178 | #endif | |
1da177e4 | 179 | |
d94d9fee | 180 | struct vif_device { |
1da177e4 LT |
181 | struct net_device *dev; /* Device we are using */ |
182 | unsigned long bytes_in,bytes_out; | |
183 | unsigned long pkt_in,pkt_out; /* Statistics */ | |
184 | unsigned long rate_limit; /* Traffic shaping (NI) */ | |
185 | unsigned char threshold; /* TTL threshold */ | |
186 | unsigned short flags; /* Control flags */ | |
114c7844 | 187 | __be32 local,remote; /* Addresses(remote for tunnels)*/ |
1da177e4 LT |
188 | int link; /* Physical interface index */ |
189 | }; | |
190 | ||
191 | #define VIFF_STATIC 0x8000 | |
192 | ||
d94d9fee | 193 | struct mfc_cache { |
1da177e4 | 194 | struct mfc_cache *next; /* Next entry on cache line */ |
5c0a66f5 BT |
195 | #ifdef CONFIG_NET_NS |
196 | struct net *mfc_net; | |
197 | #endif | |
114c7844 AV |
198 | __be32 mfc_mcastgrp; /* Group the entry belongs to */ |
199 | __be32 mfc_origin; /* Source of packet */ | |
1da177e4 LT |
200 | vifi_t mfc_parent; /* Source interface */ |
201 | int mfc_flags; /* Flags on line */ | |
202 | ||
203 | union { | |
204 | struct { | |
205 | unsigned long expires; | |
206 | struct sk_buff_head unresolved; /* Unresolved buffers */ | |
207 | } unres; | |
208 | struct { | |
209 | unsigned long last_assert; | |
210 | int minvif; | |
211 | int maxvif; | |
212 | unsigned long bytes; | |
213 | unsigned long pkt; | |
214 | unsigned long wrong_if; | |
215 | unsigned char ttls[MAXVIFS]; /* TTL thresholds */ | |
216 | } res; | |
217 | } mfc_un; | |
218 | }; | |
219 | ||
5c0a66f5 BT |
220 | static inline |
221 | struct net *mfc_net(const struct mfc_cache *mfc) | |
222 | { | |
223 | return read_pnet(&mfc->mfc_net); | |
224 | } | |
225 | ||
226 | static inline | |
227 | void mfc_net_set(struct mfc_cache *mfc, struct net *net) | |
228 | { | |
229 | write_pnet(&mfc->mfc_net, hold_net(net)); | |
230 | } | |
231 | ||
1da177e4 LT |
232 | #define MFC_STATIC 1 |
233 | #define MFC_NOTIFY 2 | |
234 | ||
235 | #define MFC_LINES 64 | |
236 | ||
237 | #ifdef __BIG_ENDIAN | |
114c7844 | 238 | #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) |
1da177e4 | 239 | #else |
114c7844 | 240 | #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) |
1da177e4 LT |
241 | #endif |
242 | ||
243 | #endif | |
244 | ||
245 | ||
246 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ | |
247 | ||
248 | /* | |
249 | * Pseudo messages used by mrouted | |
250 | */ | |
251 | ||
252 | #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ | |
253 | #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ | |
254 | #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ | |
255 | ||
256 | #ifdef __KERNEL__ | |
1da177e4 | 257 | struct rtmsg; |
4feb88e5 BT |
258 | extern int ipmr_get_route(struct net *net, struct sk_buff *skb, |
259 | struct rtmsg *rtm, int nowait); | |
1da177e4 LT |
260 | #endif |
261 | ||
262 | #endif |