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7bc570c8 YH |
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 */ | |
14fb64e1 YH |
26 | #define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */ |
27 | #define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */ | |
7bc570c8 YH |
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 | u_short 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 | { | |
80 | struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ | |
81 | struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ | |
82 | mifi_t mf6cc_parent; /* Where it arrived */ | |
83 | struct if_set mf6cc_ifset; /* Where it is going */ | |
84 | }; | |
85 | ||
86 | /* | |
87 | * Group count retrieval for pim6sd | |
88 | */ | |
89 | ||
90 | struct sioc_sg_req6 | |
91 | { | |
92 | struct sockaddr_in6 src; | |
93 | struct sockaddr_in6 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_mif_req6 | |
104 | { | |
105 | mifi_t mifi; /* 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 | * That's all usermode folks | |
114 | */ | |
115 | ||
116 | #ifdef __KERNEL__ | |
117 | ||
7c19a3d2 | 118 | #include <linux/pim.h> |
7bc570c8 | 119 | #include <linux/skbuff.h> /* for struct sk_buff_head */ |
bd91b8bf | 120 | #include <net/net_namespace.h> |
7bc570c8 | 121 | |
7bc570c8 YH |
122 | #ifdef CONFIG_IPV6_MROUTE |
123 | static inline int ip6_mroute_opt(int opt) | |
124 | { | |
125 | return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); | |
126 | } | |
127 | #else | |
128 | static inline int ip6_mroute_opt(int opt) | |
129 | { | |
130 | return 0; | |
131 | } | |
132 | #endif | |
133 | ||
134 | struct sock; | |
135 | ||
e0835f8f | 136 | #ifdef CONFIG_IPV6_MROUTE |
7bc570c8 YH |
137 | extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, int); |
138 | extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); | |
139 | extern int ip6_mr_input(struct sk_buff *skb); | |
140 | extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); | |
623d1a1a WC |
141 | extern int ip6_mr_init(void); |
142 | extern void ip6_mr_cleanup(void); | |
e0835f8f YH |
143 | #else |
144 | static inline | |
145 | int ip6_mroute_setsockopt(struct sock *sock, | |
146 | int optname, char __user *optval, int optlen) | |
147 | { | |
148 | return -ENOPROTOOPT; | |
149 | } | |
150 | ||
151 | static inline | |
152 | int ip6_mroute_getsockopt(struct sock *sock, | |
153 | int optname, char __user *optval, int __user *optlen) | |
154 | { | |
155 | return -ENOPROTOOPT; | |
156 | } | |
157 | ||
158 | static inline | |
159 | int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) | |
160 | { | |
161 | return -ENOIOCTLCMD; | |
162 | } | |
163 | ||
164 | static inline int ip6_mr_init(void) | |
165 | { | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static inline void ip6_mr_cleanup(void) | |
170 | { | |
171 | return; | |
172 | } | |
173 | #endif | |
7bc570c8 YH |
174 | |
175 | struct mif_device | |
176 | { | |
177 | struct net_device *dev; /* Device we are using */ | |
178 | unsigned long bytes_in,bytes_out; | |
179 | unsigned long pkt_in,pkt_out; /* Statistics */ | |
180 | unsigned long rate_limit; /* Traffic shaping (NI) */ | |
181 | unsigned char threshold; /* TTL threshold */ | |
182 | unsigned short flags; /* Control flags */ | |
183 | int link; /* Physical interface index */ | |
184 | }; | |
185 | ||
186 | #define VIFF_STATIC 0x8000 | |
187 | ||
188 | struct mfc6_cache | |
189 | { | |
190 | struct mfc6_cache *next; /* Next entry on cache line */ | |
58701ad4 BT |
191 | #ifdef CONFIG_NET_NS |
192 | struct net *mfc6_net; | |
193 | #endif | |
7bc570c8 YH |
194 | struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ |
195 | struct in6_addr mf6c_origin; /* Source of packet */ | |
196 | mifi_t mf6c_parent; /* Source interface */ | |
197 | int mfc_flags; /* Flags on line */ | |
198 | ||
199 | union { | |
200 | struct { | |
201 | unsigned long expires; | |
202 | struct sk_buff_head unresolved; /* Unresolved buffers */ | |
203 | } unres; | |
204 | struct { | |
205 | unsigned long last_assert; | |
206 | int minvif; | |
207 | int maxvif; | |
208 | unsigned long bytes; | |
209 | unsigned long pkt; | |
210 | unsigned long wrong_if; | |
211 | unsigned char ttls[MAXMIFS]; /* TTL thresholds */ | |
212 | } res; | |
213 | } mfc_un; | |
214 | }; | |
215 | ||
58701ad4 BT |
216 | static inline |
217 | struct net *mfc6_net(const struct mfc6_cache *mfc) | |
218 | { | |
219 | return read_pnet(&mfc->mfc6_net); | |
220 | } | |
221 | ||
222 | static inline | |
223 | void mfc6_net_set(struct mfc6_cache *mfc, struct net *net) | |
224 | { | |
225 | write_pnet(&mfc->mfc6_net, hold_net(net)); | |
226 | } | |
227 | ||
7bc570c8 YH |
228 | #define MFC_STATIC 1 |
229 | #define MFC_NOTIFY 2 | |
230 | ||
231 | #define MFC6_LINES 64 | |
232 | ||
233 | #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ | |
234 | (__force u32)(a)->s6_addr32[1] ^ \ | |
235 | (__force u32)(a)->s6_addr32[2] ^ \ | |
236 | (__force u32)(a)->s6_addr32[3] ^ \ | |
237 | (__force u32)(g)->s6_addr32[0] ^ \ | |
238 | (__force u32)(g)->s6_addr32[1] ^ \ | |
239 | (__force u32)(g)->s6_addr32[2] ^ \ | |
240 | (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) | |
241 | ||
242 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ | |
243 | ||
244 | #endif | |
245 | ||
246 | #ifdef __KERNEL__ | |
247 | struct rtmsg; | |
8229efda BT |
248 | extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, |
249 | struct rtmsg *rtm, int nowait); | |
7bc570c8 YH |
250 | |
251 | #ifdef CONFIG_IPV6_MROUTE | |
bd91b8bf BT |
252 | static inline struct sock *mroute6_socket(struct net *net) |
253 | { | |
254 | return net->ipv6.mroute6_sk; | |
255 | } | |
7bc570c8 YH |
256 | extern int ip6mr_sk_done(struct sock *sk); |
257 | #else | |
bd91b8bf | 258 | static inline struct sock *mroute6_socket(struct net *net) { return NULL; } |
7bc570c8 YH |
259 | static inline int ip6mr_sk_done(struct sock *sk) { return 0; } |
260 | #endif | |
261 | #endif | |
262 | ||
263 | /* | |
264 | * Structure used to communicate from kernel to multicast router. | |
265 | * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} | |
266 | * used for IPv4 implementation). This is because this structure will be passed via an | |
267 | * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after | |
268 | * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) | |
269 | */ | |
270 | ||
271 | struct mrt6msg { | |
272 | #define MRT6MSG_NOCACHE 1 | |
14fb64e1 YH |
273 | #define MRT6MSG_WRONGMIF 2 |
274 | #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ | |
7bc570c8 YH |
275 | __u8 im6_mbz; /* must be zero */ |
276 | __u8 im6_msgtype; /* what type of message */ | |
277 | __u16 im6_mif; /* mif rec'd on */ | |
278 | __u32 im6_pad; /* padding for 64 bit arch */ | |
279 | struct in6_addr im6_src, im6_dst; | |
280 | }; | |
281 | ||
282 | #endif |