1 #ifndef __LINUX_MROUTE_H
2 #define __LINUX_MROUTE_H
4 #include <linux/sockios.h>
5 #include <linux/types.h>
11 * Based on the MROUTING 3.5 defines primarily to keep
12 * source compatibility with BSD.
14 * See the mrouted code for the original history.
16 * Protocol Independent Multicast (PIM) data structures included
17 * Carlos Picoto (cap@di.fc.ul.pt)
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 */
33 #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
34 #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
35 #define SIOCGETRPF (SIOCPROTOPRIVATE+2)
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))
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))
54 * Passed by mrouted for an MRT_ADD_VIF - again we use the
55 * mrouted 3.6 structures for compatibility
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) */
64 struct in_addr vifc_lcl_addr
; /* Local interface address */
65 int vifc_lcl_ifindex
; /* Local interface index */
67 struct in_addr vifc_rmt_addr
; /* IPIP tunnel addr */
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 */
77 * Cache manipulation structures for mrouted and PIMd
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
;
92 * Group count retrieval for mrouted
99 unsigned long bytecnt
;
100 unsigned long wrong_if
;
104 * To get vif packet counts
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 */
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
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
;
130 * That's all usermode folks
134 #include <linux/pim.h>
135 #include <net/sock.h>
137 #ifdef CONFIG_IP_MROUTE
138 static inline int ip_mroute_opt(int opt
)
140 return (opt
>= MRT_BASE
) && (opt
<= MRT_BASE
+ 10);
143 static inline int ip_mroute_opt(int opt
)
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 ipmr_compat_ioctl(struct sock
*sk
, unsigned int cmd
, void __user
*arg
);
154 extern int ip_mr_init(void);
157 int ip_mroute_setsockopt(struct sock
*sock
,
158 int optname
, char __user
*optval
, unsigned int optlen
)
164 int ip_mroute_getsockopt(struct sock
*sock
,
165 int optname
, char __user
*optval
, int __user
*optlen
)
171 int ipmr_ioctl(struct sock
*sk
, int cmd
, void __user
*arg
)
176 static inline int ip_mr_init(void)
183 struct net_device
*dev
; /* Device we are using */
184 unsigned long bytes_in
,bytes_out
;
185 unsigned long pkt_in
,pkt_out
; /* Statistics */
186 unsigned long rate_limit
; /* Traffic shaping (NI) */
187 unsigned char threshold
; /* TTL threshold */
188 unsigned short flags
; /* Control flags */
189 __be32 local
,remote
; /* Addresses(remote for tunnels)*/
190 int link
; /* Physical interface index */
193 #define VIFF_STATIC 0x8000
196 struct list_head list
;
197 __be32 mfc_mcastgrp
; /* Group the entry belongs to */
198 __be32 mfc_origin
; /* Source of packet */
199 vifi_t mfc_parent
; /* Source interface */
200 int mfc_flags
; /* Flags on line */
204 unsigned long expires
;
205 struct sk_buff_head unresolved
; /* Unresolved buffers */
208 unsigned long last_assert
;
213 unsigned long wrong_if
;
214 unsigned char ttls
[MAXVIFS
]; /* TTL thresholds */
226 #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
228 #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
234 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
237 * Pseudo messages used by mrouted
240 #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
241 #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
242 #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
246 extern int ipmr_get_route(struct net
*net
, struct sk_buff
*skb
,
247 __be32 saddr
, __be32 daddr
,
248 struct rtmsg
*rtm
, int nowait
);
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