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1 | #ifndef __LINUX_MROUTE6_H |
2 | #define __LINUX_MROUTE6_H |
3 | |
4 | #include <linux/types.h> |
5 | #include <linux/sockios.h> |
6 | |
7 | /* |
8 | * Based on the MROUTING 3.5 defines primarily to keep |
9 | * source compatibility with BSD. |
10 | * |
11 | * See the pim6sd 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 MRT6_BASE 200 |
19 | #define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */ |
20 | #define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */ |
21 | #define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */ |
22 | #define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */ |
23 | #define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */ |
24 | #define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */ |
25 | #define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */ |
26 | #define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */ |
27 | #define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */ |
28 | |
29 | #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */ |
30 | #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1) |
31 | #define SIOCGETRPF (SIOCPROTOPRIVATE+2) |
32 | |
33 | #define MAXMIFS 32 |
34 | typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */ |
35 | typedef unsigned short mifi_t; |
36 | #define ALL_MIFS ((mifi_t)(-1)) |
37 | |
38 | #ifndef IF_SETSIZE |
39 | #define IF_SETSIZE 256 |
40 | #endif |
41 | |
42 | typedef __u32 if_mask; |
43 | #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */ |
44 | |
45 | #if !defined(__KERNEL__) && !defined(DIV_ROUND_UP) |
46 | #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y)) |
47 | #endif |
48 | |
49 | typedef struct if_set { |
50 | if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; |
51 | } if_set; |
52 | |
53 | #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) |
54 | #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) |
55 | #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) |
56 | #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) |
57 | #define IF_ZERO(p) bzero(p, sizeof(*(p))) |
58 | |
59 | /* |
60 | * Passed by mrouted for an MRT_ADD_MIF - again we use the |
61 | * mrouted 3.6 structures for compatibility |
62 | */ |
63 | |
64 | struct mif6ctl { |
65 | mifi_t mif6c_mifi; /* Index of MIF */ |
66 | unsigned char mif6c_flags; /* MIFF_ flags */ |
67 | unsigned char vifc_threshold; /* ttl limit */ |
68 | __u16 mif6c_pifi; /* the index of the physical IF */ |
69 | unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ |
70 | }; |
71 | |
72 | #define MIFF_REGISTER 0x1 /* register vif */ |
73 | |
74 | /* |
75 | * Cache manipulation structures for mrouted and PIMd |
76 | */ |
77 | |
78 | struct mf6cctl { |
79 | struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ |
80 | struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ |
81 | mifi_t mf6cc_parent; /* Where it arrived */ |
82 | struct if_set mf6cc_ifset; /* Where it is going */ |
83 | }; |
84 | |
85 | /* |
86 | * Group count retrieval for pim6sd |
87 | */ |
88 | |
89 | struct sioc_sg_req6 { |
90 | struct sockaddr_in6 src; |
91 | struct sockaddr_in6 grp; |
92 | unsigned long pktcnt; |
93 | unsigned long bytecnt; |
94 | unsigned long wrong_if; |
95 | }; |
96 | |
97 | /* |
98 | * To get vif packet counts |
99 | */ |
100 | |
101 | struct sioc_mif_req6 { |
102 | mifi_t mifi; /* 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 | * That's all usermode folks |
111 | */ |
112 | |
113 | #ifdef __KERNEL__ |
114 | |
115 | #include <linux/pim.h> |
116 | #include <linux/skbuff.h> /* for struct sk_buff_head */ |
117 | #include <net/net_namespace.h> |
118 | |
119 | #ifdef CONFIG_IPV6_MROUTE |
120 | static inline int ip6_mroute_opt(int opt) |
121 | { |
122 | return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); |
123 | } |
124 | #else |
125 | static inline int ip6_mroute_opt(int opt) |
126 | { |
127 | return 0; |
128 | } |
129 | #endif |
130 | |
131 | struct sock; |
132 | |
133 | #ifdef CONFIG_IPV6_MROUTE |
134 | extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); |
135 | extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); |
136 | extern int ip6_mr_input(struct sk_buff *skb); |
137 | extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); |
138 | extern int ip6_mr_init(void); |
139 | extern void ip6_mr_cleanup(void); |
140 | #else |
141 | static inline |
142 | int ip6_mroute_setsockopt(struct sock *sock, |
143 | int optname, char __user *optval, unsigned int optlen) |
144 | { |
145 | return -ENOPROTOOPT; |
146 | } |
147 | |
148 | static inline |
149 | int ip6_mroute_getsockopt(struct sock *sock, |
150 | int optname, char __user *optval, int __user *optlen) |
151 | { |
152 | return -ENOPROTOOPT; |
153 | } |
154 | |
155 | static inline |
156 | int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) |
157 | { |
158 | return -ENOIOCTLCMD; |
159 | } |
160 | |
161 | static inline int ip6_mr_init(void) |
162 | { |
163 | return 0; |
164 | } |
165 | |
166 | static inline void ip6_mr_cleanup(void) |
167 | { |
168 | return; |
169 | } |
170 | #endif |
171 | |
172 | struct mif_device { |
173 | struct net_device *dev; /* Device we are using */ |
174 | unsigned long bytes_in,bytes_out; |
175 | unsigned long pkt_in,pkt_out; /* Statistics */ |
176 | unsigned long rate_limit; /* Traffic shaping (NI) */ |
177 | unsigned char threshold; /* TTL threshold */ |
178 | unsigned short flags; /* Control flags */ |
179 | int link; /* Physical interface index */ |
180 | }; |
181 | |
182 | #define VIFF_STATIC 0x8000 |
183 | |
184 | struct mfc6_cache { |
185 | struct mfc6_cache *next; /* Next entry on cache line */ |
186 | #ifdef CONFIG_NET_NS |
187 | struct net *mfc6_net; |
188 | #endif |
189 | struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ |
190 | struct in6_addr mf6c_origin; /* Source of packet */ |
191 | mifi_t mf6c_parent; /* Source interface */ |
192 | int mfc_flags; /* Flags on line */ |
193 | |
194 | union { |
195 | struct { |
196 | unsigned long expires; |
197 | struct sk_buff_head unresolved; /* Unresolved buffers */ |
198 | } unres; |
199 | struct { |
200 | unsigned long last_assert; |
201 | int minvif; |
202 | int maxvif; |
203 | unsigned long bytes; |
204 | unsigned long pkt; |
205 | unsigned long wrong_if; |
206 | unsigned char ttls[MAXMIFS]; /* TTL thresholds */ |
207 | } res; |
208 | } mfc_un; |
209 | }; |
210 | |
211 | static inline |
212 | struct net *mfc6_net(const struct mfc6_cache *mfc) |
213 | { |
214 | return read_pnet(&mfc->mfc6_net); |
215 | } |
216 | |
217 | static inline |
218 | void mfc6_net_set(struct mfc6_cache *mfc, struct net *net) |
219 | { |
220 | write_pnet(&mfc->mfc6_net, hold_net(net)); |
221 | } |
222 | |
223 | #define MFC_STATIC 1 |
224 | #define MFC_NOTIFY 2 |
225 | |
226 | #define MFC6_LINES 64 |
227 | |
228 | #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ |
229 | (__force u32)(a)->s6_addr32[1] ^ \ |
230 | (__force u32)(a)->s6_addr32[2] ^ \ |
231 | (__force u32)(a)->s6_addr32[3] ^ \ |
232 | (__force u32)(g)->s6_addr32[0] ^ \ |
233 | (__force u32)(g)->s6_addr32[1] ^ \ |
234 | (__force u32)(g)->s6_addr32[2] ^ \ |
235 | (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) |
236 | |
237 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ |
238 | |
239 | #endif |
240 | |
241 | #ifdef __KERNEL__ |
242 | struct rtmsg; |
243 | extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, |
244 | struct rtmsg *rtm, int nowait); |
245 | |
246 | #ifdef CONFIG_IPV6_MROUTE |
247 | static inline struct sock *mroute6_socket(struct net *net) |
248 | { |
249 | return net->ipv6.mroute6_sk; |
250 | } |
251 | extern int ip6mr_sk_done(struct sock *sk); |
252 | #else |
253 | static inline struct sock *mroute6_socket(struct net *net) { return NULL; } |
254 | static inline int ip6mr_sk_done(struct sock *sk) { return 0; } |
255 | #endif |
256 | #endif |
257 | |
258 | /* |
259 | * Structure used to communicate from kernel to multicast router. |
260 | * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} |
261 | * used for IPv4 implementation). This is because this structure will be passed via an |
262 | * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after |
263 | * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) |
264 | */ |
265 | |
266 | struct mrt6msg { |
267 | #define MRT6MSG_NOCACHE 1 |
268 | #define MRT6MSG_WRONGMIF 2 |
269 | #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ |
270 | __u8 im6_mbz; /* must be zero */ |
271 | __u8 im6_msgtype; /* what type of message */ |
272 | __u16 im6_mif; /* mif rec'd on */ |
273 | __u32 im6_pad; /* padding for 64 bit arch */ |
274 | struct in6_addr im6_src, im6_dst; |
275 | }; |
276 | |
277 | #endif |
278 |
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