229 lines
6.3 KiB
C
229 lines
6.3 KiB
C
#ifndef __LINUX_MROUTE6_H
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#define __LINUX_MROUTE6_H
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#include <linux/types.h>
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#include <linux/sockios.h>
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/*
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* Based on the MROUTING 3.5 defines primarily to keep
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* source compatibility with BSD.
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*
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* See the pim6sd code for the original history.
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*
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* Protocol Independent Multicast (PIM) data structures included
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* Carlos Picoto (cap@di.fc.ul.pt)
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*
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*/
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#define MRT6_BASE 200
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#define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */
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#define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */
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#define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */
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#define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */
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#define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */
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#define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */
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#define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */
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#define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */
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#define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */
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#define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */
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#define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1)
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#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
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#define MAXMIFS 32
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typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */
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typedef unsigned short mifi_t;
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#define ALL_MIFS ((mifi_t)(-1))
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#ifndef IF_SETSIZE
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#define IF_SETSIZE 256
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#endif
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typedef __u32 if_mask;
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#define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */
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#if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
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#define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y))
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#endif
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typedef struct if_set {
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if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
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} if_set;
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#define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
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#define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
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#define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
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#define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))
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#define IF_ZERO(p) bzero(p, sizeof(*(p)))
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/*
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* Passed by mrouted for an MRT_ADD_MIF - again we use the
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* mrouted 3.6 structures for compatibility
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*/
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struct mif6ctl {
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mifi_t mif6c_mifi; /* Index of MIF */
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unsigned char mif6c_flags; /* MIFF_ flags */
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unsigned char vifc_threshold; /* ttl limit */
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u_short mif6c_pifi; /* the index of the physical IF */
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unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
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};
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#define MIFF_REGISTER 0x1 /* register vif */
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/*
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* Cache manipulation structures for mrouted and PIMd
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*/
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struct mf6cctl
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{
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struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */
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struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */
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mifi_t mf6cc_parent; /* Where it arrived */
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struct if_set mf6cc_ifset; /* Where it is going */
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};
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/*
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* Group count retrieval for pim6sd
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*/
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struct sioc_sg_req6
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{
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struct sockaddr_in6 src;
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struct sockaddr_in6 grp;
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unsigned long pktcnt;
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unsigned long bytecnt;
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unsigned long wrong_if;
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};
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/*
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* To get vif packet counts
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*/
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struct sioc_mif_req6
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{
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mifi_t mifi; /* Which iface */
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unsigned long icount; /* In packets */
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unsigned long ocount; /* Out packets */
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unsigned long ibytes; /* In bytes */
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unsigned long obytes; /* Out bytes */
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};
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/*
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* That's all usermode folks
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*/
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#ifdef __KERNEL__
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#include <linux/skbuff.h> /* for struct sk_buff_head */
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#ifdef CONFIG_IPV6_MROUTE
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static inline int ip6_mroute_opt(int opt)
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{
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return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10);
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}
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#else
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static inline int ip6_mroute_opt(int opt)
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{
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return 0;
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}
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#endif
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struct sock;
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extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, int);
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extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
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extern int ip6_mr_input(struct sk_buff *skb);
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extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
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extern void ip6_mr_init(void);
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struct mif_device
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{
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struct net_device *dev; /* Device we are using */
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unsigned long bytes_in,bytes_out;
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unsigned long pkt_in,pkt_out; /* Statistics */
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unsigned long rate_limit; /* Traffic shaping (NI) */
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unsigned char threshold; /* TTL threshold */
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unsigned short flags; /* Control flags */
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int link; /* Physical interface index */
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};
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#define VIFF_STATIC 0x8000
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struct mfc6_cache
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{
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struct mfc6_cache *next; /* Next entry on cache line */
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struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
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struct in6_addr mf6c_origin; /* Source of packet */
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mifi_t mf6c_parent; /* Source interface */
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int mfc_flags; /* Flags on line */
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union {
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struct {
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unsigned long expires;
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struct sk_buff_head unresolved; /* Unresolved buffers */
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} unres;
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struct {
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unsigned long last_assert;
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int minvif;
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int maxvif;
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unsigned long bytes;
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unsigned long pkt;
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unsigned long wrong_if;
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unsigned char ttls[MAXMIFS]; /* TTL thresholds */
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} res;
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} mfc_un;
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};
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#define MFC_STATIC 1
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#define MFC_NOTIFY 2
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#define MFC6_LINES 64
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#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
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(__force u32)(a)->s6_addr32[1] ^ \
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(__force u32)(a)->s6_addr32[2] ^ \
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(__force u32)(a)->s6_addr32[3] ^ \
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(__force u32)(g)->s6_addr32[0] ^ \
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(__force u32)(g)->s6_addr32[1] ^ \
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(__force u32)(g)->s6_addr32[2] ^ \
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(__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
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#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
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#endif
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#ifdef __KERNEL__
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struct rtmsg;
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extern int ip6mr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
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#ifdef CONFIG_IPV6_MROUTE
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extern struct sock *mroute6_socket;
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extern int ip6mr_sk_done(struct sock *sk);
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#else
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#define mroute6_socket NULL
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static inline int ip6mr_sk_done(struct sock *sk) { return 0; }
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#endif
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#endif
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/*
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* Structure used to communicate from kernel to multicast router.
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* We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
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* used for IPv4 implementation). This is because this structure will be passed via an
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* IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
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* the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
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*/
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struct mrt6msg {
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#define MRT6MSG_NOCACHE 1
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#define MRT6MSG_WRONGMIF 2
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#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */
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__u8 im6_mbz; /* must be zero */
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__u8 im6_msgtype; /* what type of message */
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__u16 im6_mif; /* mif rec'd on */
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__u32 im6_pad; /* padding for 64 bit arch */
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struct in6_addr im6_src, im6_dst;
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};
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#endif
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