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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 | 26 | #define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */ |
d1db275d PM |
27 | #define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */ |
28 | #define MRT6_TABLE (MRT6_BASE+9) /* Specify mroute table ID */ | |
7bc570c8 YH |
29 | |
30 | #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */ | |
31 | #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1) | |
32 | #define SIOCGETRPF (SIOCPROTOPRIVATE+2) | |
33 | ||
34 | #define MAXMIFS 32 | |
35 | typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */ | |
36 | typedef unsigned short mifi_t; | |
37 | #define ALL_MIFS ((mifi_t)(-1)) | |
38 | ||
39 | #ifndef IF_SETSIZE | |
40 | #define IF_SETSIZE 256 | |
41 | #endif | |
42 | ||
43 | typedef __u32 if_mask; | |
44 | #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */ | |
45 | ||
1632b9e2 DH |
46 | #if !defined(__KERNEL__) |
47 | #if !defined(DIV_ROUND_UP) | |
7bc570c8 YH |
48 | #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y)) |
49 | #endif | |
1632b9e2 | 50 | #endif |
7bc570c8 YH |
51 | |
52 | typedef struct if_set { | |
53 | if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; | |
54 | } if_set; | |
55 | ||
56 | #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) | |
57 | #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) | |
58 | #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) | |
59 | #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) | |
60 | #define IF_ZERO(p) bzero(p, sizeof(*(p))) | |
61 | ||
62 | /* | |
63 | * Passed by mrouted for an MRT_ADD_MIF - again we use the | |
64 | * mrouted 3.6 structures for compatibility | |
65 | */ | |
66 | ||
67 | struct mif6ctl { | |
68 | mifi_t mif6c_mifi; /* Index of MIF */ | |
69 | unsigned char mif6c_flags; /* MIFF_ flags */ | |
70 | unsigned char vifc_threshold; /* ttl limit */ | |
85efde6f | 71 | __u16 mif6c_pifi; /* the index of the physical IF */ |
7bc570c8 YH |
72 | unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ |
73 | }; | |
74 | ||
75 | #define MIFF_REGISTER 0x1 /* register vif */ | |
76 | ||
77 | /* | |
78 | * Cache manipulation structures for mrouted and PIMd | |
79 | */ | |
80 | ||
d94d9fee | 81 | struct mf6cctl { |
7bc570c8 YH |
82 | struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ |
83 | struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ | |
84 | mifi_t mf6cc_parent; /* Where it arrived */ | |
85 | struct if_set mf6cc_ifset; /* Where it is going */ | |
86 | }; | |
87 | ||
88 | /* | |
89 | * Group count retrieval for pim6sd | |
90 | */ | |
91 | ||
d94d9fee | 92 | struct sioc_sg_req6 { |
7bc570c8 YH |
93 | struct sockaddr_in6 src; |
94 | struct sockaddr_in6 grp; | |
95 | unsigned long pktcnt; | |
96 | unsigned long bytecnt; | |
97 | unsigned long wrong_if; | |
98 | }; | |
99 | ||
100 | /* | |
101 | * To get vif packet counts | |
102 | */ | |
103 | ||
d94d9fee | 104 | struct sioc_mif_req6 { |
7bc570c8 YH |
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 |
b7058842 | 137 | extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); |
7bc570c8 YH |
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); | |
e2d57766 | 141 | extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); |
623d1a1a WC |
142 | extern int ip6_mr_init(void); |
143 | extern void ip6_mr_cleanup(void); | |
e0835f8f YH |
144 | #else |
145 | static inline | |
146 | int ip6_mroute_setsockopt(struct sock *sock, | |
b7058842 | 147 | int optname, char __user *optval, unsigned int optlen) |
e0835f8f YH |
148 | { |
149 | return -ENOPROTOOPT; | |
150 | } | |
151 | ||
152 | static inline | |
153 | int ip6_mroute_getsockopt(struct sock *sock, | |
154 | int optname, char __user *optval, int __user *optlen) | |
155 | { | |
156 | return -ENOPROTOOPT; | |
157 | } | |
158 | ||
159 | static inline | |
160 | int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) | |
161 | { | |
162 | return -ENOIOCTLCMD; | |
163 | } | |
164 | ||
165 | static inline int ip6_mr_init(void) | |
166 | { | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static inline void ip6_mr_cleanup(void) | |
171 | { | |
172 | return; | |
173 | } | |
174 | #endif | |
7bc570c8 | 175 | |
d94d9fee | 176 | struct mif_device { |
7bc570c8 YH |
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 | ||
d94d9fee | 188 | struct mfc6_cache { |
f30a7784 | 189 | struct list_head list; |
7bc570c8 YH |
190 | struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ |
191 | struct in6_addr mf6c_origin; /* Source of packet */ | |
192 | mifi_t mf6c_parent; /* Source interface */ | |
193 | int mfc_flags; /* Flags on line */ | |
194 | ||
195 | union { | |
196 | struct { | |
197 | unsigned long expires; | |
198 | struct sk_buff_head unresolved; /* Unresolved buffers */ | |
199 | } unres; | |
200 | struct { | |
201 | unsigned long last_assert; | |
202 | int minvif; | |
203 | int maxvif; | |
204 | unsigned long bytes; | |
205 | unsigned long pkt; | |
206 | unsigned long wrong_if; | |
207 | unsigned char ttls[MAXMIFS]; /* TTL thresholds */ | |
208 | } res; | |
209 | } mfc_un; | |
210 | }; | |
211 | ||
212 | #define MFC_STATIC 1 | |
213 | #define MFC_NOTIFY 2 | |
214 | ||
215 | #define MFC6_LINES 64 | |
216 | ||
217 | #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ | |
218 | (__force u32)(a)->s6_addr32[1] ^ \ | |
219 | (__force u32)(a)->s6_addr32[2] ^ \ | |
220 | (__force u32)(a)->s6_addr32[3] ^ \ | |
221 | (__force u32)(g)->s6_addr32[0] ^ \ | |
222 | (__force u32)(g)->s6_addr32[1] ^ \ | |
223 | (__force u32)(g)->s6_addr32[2] ^ \ | |
224 | (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) | |
225 | ||
226 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ | |
227 | ||
228 | #endif | |
229 | ||
230 | #ifdef __KERNEL__ | |
231 | struct rtmsg; | |
8229efda BT |
232 | extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, |
233 | struct rtmsg *rtm, int nowait); | |
7bc570c8 YH |
234 | |
235 | #ifdef CONFIG_IPV6_MROUTE | |
d1db275d | 236 | extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb); |
7bc570c8 YH |
237 | extern int ip6mr_sk_done(struct sock *sk); |
238 | #else | |
d1db275d PM |
239 | static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb) |
240 | { | |
241 | return NULL; | |
242 | } | |
243 | static inline int ip6mr_sk_done(struct sock *sk) | |
244 | { | |
245 | return 0; | |
246 | } | |
7bc570c8 YH |
247 | #endif |
248 | #endif | |
249 | ||
250 | /* | |
251 | * Structure used to communicate from kernel to multicast router. | |
252 | * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} | |
253 | * used for IPv4 implementation). This is because this structure will be passed via an | |
25985edc | 254 | * IPv6 raw socket, on which an application will only receiver the payload i.e the data after |
7bc570c8 YH |
255 | * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) |
256 | */ | |
257 | ||
258 | struct mrt6msg { | |
259 | #define MRT6MSG_NOCACHE 1 | |
14fb64e1 YH |
260 | #define MRT6MSG_WRONGMIF 2 |
261 | #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ | |
7bc570c8 YH |
262 | __u8 im6_mbz; /* must be zero */ |
263 | __u8 im6_msgtype; /* what type of message */ | |
264 | __u16 im6_mif; /* mif rec'd on */ | |
265 | __u32 im6_pad; /* padding for 64 bit arch */ | |
266 | struct in6_addr im6_src, im6_dst; | |
267 | }; | |
268 | ||
269 | #endif |