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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 | |
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) */ |
62 | struct in_addr vifc_lcl_addr; /* Our address */ |
63 | struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ |
64 | }; |
65 | |
66 | #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ |
67 | #define VIFF_SRCRT 0x2 /* NI */ |
68 | #define VIFF_REGISTER 0x4 /* register vif */ |
69 | |
70 | /* |
71 | * Cache manipulation structures for mrouted and PIMd |
72 | */ |
73 | |
74 | struct mfcctl |
75 | { |
76 | struct in_addr mfcc_origin; /* Origin of mcast */ |
77 | struct in_addr mfcc_mcastgrp; /* Group in question */ |
78 | vifi_t mfcc_parent; /* Where it arrived */ |
79 | unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ |
80 | unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ |
81 | unsigned int mfcc_byte_cnt; |
82 | unsigned int mfcc_wrong_if; |
83 | int mfcc_expire; |
84 | }; |
85 | |
86 | /* |
87 | * Group count retrieval for mrouted |
88 | */ |
89 | |
90 | struct sioc_sg_req |
91 | { |
92 | struct in_addr src; |
93 | struct in_addr grp; |
94 | unsigned long pktcnt; |
95 | unsigned long bytecnt; |
96 | unsigned long wrong_if; |
97 | }; |
98 | |
99 | /* |
100 | * To get vif packet counts |
101 | */ |
102 | |
103 | struct sioc_vif_req |
104 | { |
105 | vifi_t vifi; /* Which iface */ |
106 | unsigned long icount; /* In packets */ |
107 | unsigned long ocount; /* Out packets */ |
108 | unsigned long ibytes; /* In bytes */ |
109 | unsigned long obytes; /* Out bytes */ |
110 | }; |
111 | |
112 | /* |
113 | * This is the format the mroute daemon expects to see IGMP control |
114 | * data. Magically happens to be like an IP packet as per the original |
115 | */ |
116 | |
117 | struct igmpmsg |
118 | { |
119 | __u32 unused1,unused2; |
120 | unsigned char im_msgtype; /* What is this */ |
121 | unsigned char im_mbz; /* Must be zero */ |
122 | unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ |
123 | unsigned char unused3; |
124 | struct in_addr im_src,im_dst; |
125 | }; |
126 | |
127 | /* |
128 | * That's all usermode folks |
129 | */ |
130 | |
131 | #ifdef __KERNEL__ |
132 | #include <linux/pim.h> |
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 | #ifdef CONFIG_IP_MROUTE |
148 | extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); |
149 | extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); |
150 | extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); |
151 | extern int ip_mr_init(void); |
152 | #else |
153 | static inline |
154 | int ip_mroute_setsockopt(struct sock *sock, |
155 | int optname, char __user *optval, unsigned int optlen) |
156 | { |
157 | return -ENOPROTOOPT; |
158 | } |
159 | |
160 | static inline |
161 | int ip_mroute_getsockopt(struct sock *sock, |
162 | int optname, char __user *optval, int __user *optlen) |
163 | { |
164 | return -ENOPROTOOPT; |
165 | } |
166 | |
167 | static inline |
168 | int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg) |
169 | { |
170 | return -ENOIOCTLCMD; |
171 | } |
172 | |
173 | static inline int ip_mr_init(void) |
174 | { |
175 | return 0; |
176 | } |
177 | #endif |
178 | |
179 | struct vif_device |
180 | { |
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 */ |
187 | __be32 local,remote; /* Addresses(remote for tunnels)*/ |
188 | int link; /* Physical interface index */ |
189 | }; |
190 | |
191 | #define VIFF_STATIC 0x8000 |
192 | |
193 | struct mfc_cache |
194 | { |
195 | struct mfc_cache *next; /* Next entry on cache line */ |
196 | #ifdef CONFIG_NET_NS |
197 | struct net *mfc_net; |
198 | #endif |
199 | __be32 mfc_mcastgrp; /* Group the entry belongs to */ |
200 | __be32 mfc_origin; /* Source of packet */ |
201 | vifi_t mfc_parent; /* Source interface */ |
202 | int mfc_flags; /* Flags on line */ |
203 | |
204 | union { |
205 | struct { |
206 | unsigned long expires; |
207 | struct sk_buff_head unresolved; /* Unresolved buffers */ |
208 | } unres; |
209 | struct { |
210 | unsigned long last_assert; |
211 | int minvif; |
212 | int maxvif; |
213 | unsigned long bytes; |
214 | unsigned long pkt; |
215 | unsigned long wrong_if; |
216 | unsigned char ttls[MAXVIFS]; /* TTL thresholds */ |
217 | } res; |
218 | } mfc_un; |
219 | }; |
220 | |
221 | static inline |
222 | struct net *mfc_net(const struct mfc_cache *mfc) |
223 | { |
224 | return read_pnet(&mfc->mfc_net); |
225 | } |
226 | |
227 | static inline |
228 | void mfc_net_set(struct mfc_cache *mfc, struct net *net) |
229 | { |
230 | write_pnet(&mfc->mfc_net, hold_net(net)); |
231 | } |
232 | |
233 | #define MFC_STATIC 1 |
234 | #define MFC_NOTIFY 2 |
235 | |
236 | #define MFC_LINES 64 |
237 | |
238 | #ifdef __BIG_ENDIAN |
239 | #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) |
240 | #else |
241 | #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) |
242 | #endif |
243 | |
244 | #endif |
245 | |
246 | |
247 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ |
248 | |
249 | /* |
250 | * Pseudo messages used by mrouted |
251 | */ |
252 | |
253 | #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ |
254 | #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ |
255 | #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ |
256 | |
257 | #ifdef __KERNEL__ |
258 | struct rtmsg; |
259 | extern int ipmr_get_route(struct net *net, struct sk_buff *skb, |
260 | struct rtmsg *rtm, int nowait); |
261 | #endif |
262 | |
263 | #endif |
264 |
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