1 #ifndef __LINUX_MROUTE6_H
2 #define __LINUX_MROUTE6_H
4 #include <linux/types.h>
5 #include <linux/sockios.h>
8 * Based on the MROUTING 3.5 defines primarily to keep
9 * source compatibility with BSD.
11 * See the pim6sd code for the original history.
13 * Protocol Independent Multicast (PIM) data structures included
14 * Carlos Picoto (cap@di.fc.ul.pt)
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 */
27 #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */
28 #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1)
29 #define SIOCGETRPF (SIOCPROTOPRIVATE+2)
32 typedef unsigned long mifbitmap_t
; /* User mode code depends on this lot */
33 typedef unsigned short mifi_t
;
34 #define ALL_MIFS ((mifi_t)(-1))
37 #define IF_SETSIZE 256
40 typedef __u32 if_mask
;
41 #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */
43 #if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
44 #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y))
47 typedef struct if_set
{
48 if_mask ifs_bits
[DIV_ROUND_UP(IF_SETSIZE
, NIFBITS
)];
51 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
52 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
53 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
54 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))
55 #define IF_ZERO(p) bzero(p, sizeof(*(p)))
58 * Passed by mrouted for an MRT_ADD_MIF - again we use the
59 * mrouted 3.6 structures for compatibility
63 mifi_t mif6c_mifi
; /* Index of MIF */
64 unsigned char mif6c_flags
; /* MIFF_ flags */
65 unsigned char vifc_threshold
; /* ttl limit */
66 u_short mif6c_pifi
; /* the index of the physical IF */
67 unsigned int vifc_rate_limit
; /* Rate limiter values (NI) */
70 #define MIFF_REGISTER 0x1 /* register vif */
73 * Cache manipulation structures for mrouted and PIMd
78 struct sockaddr_in6 mf6cc_origin
; /* Origin of mcast */
79 struct sockaddr_in6 mf6cc_mcastgrp
; /* Group in question */
80 mifi_t mf6cc_parent
; /* Where it arrived */
81 struct if_set mf6cc_ifset
; /* Where it is going */
85 * Group count retrieval for pim6sd
90 struct sockaddr_in6 src
;
91 struct sockaddr_in6 grp
;
93 unsigned long bytecnt
;
94 unsigned long wrong_if
;
98 * To get vif packet counts
103 mifi_t mifi
; /* Which iface */
104 unsigned long icount
; /* In packets */
105 unsigned long ocount
; /* Out packets */
106 unsigned long ibytes
; /* In bytes */
107 unsigned long obytes
; /* Out bytes */
111 * That's all usermode folks
116 #include <linux/skbuff.h> /* for struct sk_buff_head */
119 struct inet6_dev
*ipv6_find_idev(struct net_device
*dev
);
121 #ifdef CONFIG_IPV6_MROUTE
122 static inline int ip6_mroute_opt(int opt
)
124 return (opt
>= MRT6_BASE
) && (opt
<= MRT6_BASE
+ 10);
127 static inline int ip6_mroute_opt(int opt
)
135 extern int ip6_mroute_setsockopt(struct sock
*, int, char __user
*, int);
136 extern int ip6_mroute_getsockopt(struct sock
*, int, char __user
*, int __user
*);
137 extern int ip6_mr_input(struct sk_buff
*skb
);
138 extern int ip6mr_ioctl(struct sock
*sk
, int cmd
, void __user
*arg
);
139 extern void ip6_mr_init(void);
143 struct net_device
*dev
; /* Device we are using */
144 unsigned long bytes_in
,bytes_out
;
145 unsigned long pkt_in
,pkt_out
; /* Statistics */
146 unsigned long rate_limit
; /* Traffic shaping (NI) */
147 unsigned char threshold
; /* TTL threshold */
148 unsigned short flags
; /* Control flags */
149 int link
; /* Physical interface index */
152 #define VIFF_STATIC 0x8000
156 struct mfc6_cache
*next
; /* Next entry on cache line */
157 struct in6_addr mf6c_mcastgrp
; /* Group the entry belongs to */
158 struct in6_addr mf6c_origin
; /* Source of packet */
159 mifi_t mf6c_parent
; /* Source interface */
160 int mfc_flags
; /* Flags on line */
164 unsigned long expires
;
165 struct sk_buff_head unresolved
; /* Unresolved buffers */
168 unsigned long last_assert
;
173 unsigned long wrong_if
;
174 unsigned char ttls
[MAXMIFS
]; /* TTL thresholds */
182 #define MFC6_LINES 64
184 #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
185 (__force u32)(a)->s6_addr32[1] ^ \
186 (__force u32)(a)->s6_addr32[2] ^ \
187 (__force u32)(a)->s6_addr32[3] ^ \
188 (__force u32)(g)->s6_addr32[0] ^ \
189 (__force u32)(g)->s6_addr32[1] ^ \
190 (__force u32)(g)->s6_addr32[2] ^ \
191 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
193 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
199 extern int ip6mr_get_route(struct sk_buff
*skb
, struct rtmsg
*rtm
, int nowait
);
201 #ifdef CONFIG_IPV6_MROUTE
202 extern struct sock
*mroute6_socket
;
203 extern int ip6mr_sk_done(struct sock
*sk
);
205 #define mroute6_socket NULL
206 static inline int ip6mr_sk_done(struct sock
*sk
) { return 0; }
211 * Structure used to communicate from kernel to multicast router.
212 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
213 * used for IPv4 implementation). This is because this structure will be passed via an
214 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
215 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
219 #define MRT6MSG_NOCACHE 1
220 __u8 im6_mbz
; /* must be zero */
221 __u8 im6_msgtype
; /* what type of message */
222 __u16 im6_mif
; /* mif rec'd on */
223 __u32 im6_pad
; /* padding for 64 bit arch */
224 struct in6_addr im6_src
, im6_dst
;