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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 | #define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */ |
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 | union { |
64 | struct in_addr vifc_lcl_addr; /* Local interface address */ |
65 | int vifc_lcl_ifindex; /* Local interface index */ |
66 | }; |
67 | struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ |
68 | }; |
69 | |
70 | #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ |
71 | #define VIFF_SRCRT 0x2 /* NI */ |
72 | #define VIFF_REGISTER 0x4 /* register vif */ |
73 | #define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of |
74 | vifc_lcl_addr to find an interface */ |
75 | |
76 | /* |
77 | * Cache manipulation structures for mrouted and PIMd |
78 | */ |
79 | |
80 | struct mfcctl { |
81 | struct in_addr mfcc_origin; /* Origin of mcast */ |
82 | struct in_addr mfcc_mcastgrp; /* Group in question */ |
83 | vifi_t mfcc_parent; /* Where it arrived */ |
84 | unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ |
85 | unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ |
86 | unsigned int mfcc_byte_cnt; |
87 | unsigned int mfcc_wrong_if; |
88 | int mfcc_expire; |
89 | }; |
90 | |
91 | /* |
92 | * Group count retrieval for mrouted |
93 | */ |
94 | |
95 | struct sioc_sg_req { |
96 | struct in_addr src; |
97 | struct in_addr grp; |
98 | unsigned long pktcnt; |
99 | unsigned long bytecnt; |
100 | unsigned long wrong_if; |
101 | }; |
102 | |
103 | /* |
104 | * To get vif packet counts |
105 | */ |
106 | |
107 | struct sioc_vif_req { |
108 | vifi_t vifi; /* Which iface */ |
109 | unsigned long icount; /* In packets */ |
110 | unsigned long ocount; /* Out packets */ |
111 | unsigned long ibytes; /* In bytes */ |
112 | unsigned long obytes; /* Out bytes */ |
113 | }; |
114 | |
115 | /* |
116 | * This is the format the mroute daemon expects to see IGMP control |
117 | * data. Magically happens to be like an IP packet as per the original |
118 | */ |
119 | |
120 | struct igmpmsg { |
121 | __u32 unused1,unused2; |
122 | unsigned char im_msgtype; /* What is this */ |
123 | unsigned char im_mbz; /* Must be zero */ |
124 | unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ |
125 | unsigned char unused3; |
126 | struct in_addr im_src,im_dst; |
127 | }; |
128 | |
129 | /* |
130 | * That's all usermode folks |
131 | */ |
132 | |
133 | #ifdef __KERNEL__ |
134 | #include <linux/pim.h> |
135 | #include <net/sock.h> |
136 | |
137 | #ifdef CONFIG_IP_MROUTE |
138 | static inline int ip_mroute_opt(int opt) |
139 | { |
140 | return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10); |
141 | } |
142 | #else |
143 | static inline int ip_mroute_opt(int opt) |
144 | { |
145 | return 0; |
146 | } |
147 | #endif |
148 | |
149 | #ifdef CONFIG_IP_MROUTE |
150 | extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); |
151 | extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); |
152 | extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); |
153 | extern int ip_mr_init(void); |
154 | #else |
155 | static inline |
156 | int ip_mroute_setsockopt(struct sock *sock, |
157 | int optname, char __user *optval, unsigned int optlen) |
158 | { |
159 | return -ENOPROTOOPT; |
160 | } |
161 | |
162 | static inline |
163 | int ip_mroute_getsockopt(struct sock *sock, |
164 | int optname, char __user *optval, int __user *optlen) |
165 | { |
166 | return -ENOPROTOOPT; |
167 | } |
168 | |
169 | static inline |
170 | int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg) |
171 | { |
172 | return -ENOIOCTLCMD; |
173 | } |
174 | |
175 | static inline int ip_mr_init(void) |
176 | { |
177 | return 0; |
178 | } |
179 | #endif |
180 | |
181 | struct vif_device { |
182 | struct net_device *dev; /* Device we are using */ |
183 | unsigned long bytes_in,bytes_out; |
184 | unsigned long pkt_in,pkt_out; /* Statistics */ |
185 | unsigned long rate_limit; /* Traffic shaping (NI) */ |
186 | unsigned char threshold; /* TTL threshold */ |
187 | unsigned short flags; /* Control flags */ |
188 | __be32 local,remote; /* Addresses(remote for tunnels)*/ |
189 | int link; /* Physical interface index */ |
190 | }; |
191 | |
192 | #define VIFF_STATIC 0x8000 |
193 | |
194 | struct mfc_cache { |
195 | struct list_head list; |
196 | __be32 mfc_mcastgrp; /* Group the entry belongs to */ |
197 | __be32 mfc_origin; /* Source of packet */ |
198 | vifi_t mfc_parent; /* Source interface */ |
199 | int mfc_flags; /* Flags on line */ |
200 | |
201 | union { |
202 | struct { |
203 | unsigned long expires; |
204 | struct sk_buff_head unresolved; /* Unresolved buffers */ |
205 | } unres; |
206 | struct { |
207 | unsigned long last_assert; |
208 | int minvif; |
209 | int maxvif; |
210 | unsigned long bytes; |
211 | unsigned long pkt; |
212 | unsigned long wrong_if; |
213 | unsigned char ttls[MAXVIFS]; /* TTL thresholds */ |
214 | } res; |
215 | } mfc_un; |
216 | struct rcu_head rcu; |
217 | }; |
218 | |
219 | #define MFC_STATIC 1 |
220 | #define MFC_NOTIFY 2 |
221 | |
222 | #define MFC_LINES 64 |
223 | |
224 | #ifdef __BIG_ENDIAN |
225 | #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1)) |
226 | #else |
227 | #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1)) |
228 | #endif |
229 | |
230 | #endif |
231 | |
232 | |
233 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ |
234 | |
235 | /* |
236 | * Pseudo messages used by mrouted |
237 | */ |
238 | |
239 | #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ |
240 | #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ |
241 | #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ |
242 | |
243 | #ifdef __KERNEL__ |
244 | struct rtmsg; |
245 | extern int ipmr_get_route(struct net *net, struct sk_buff *skb, |
246 | struct rtmsg *rtm, int nowait); |
247 | #endif |
248 | |
249 | #endif |
250 |
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