#ifndef __LINUX_MROUTE6_H #define __LINUX_MROUTE6_H #include <linux/types.h> #include <linux/sockios.h> /* * Based on the MROUTING 3.5 defines primarily to keep * source compatibility with BSD. * * See the pim6sd code for the original history. * * Protocol Independent Multicast (PIM) data structures included * Carlos Picoto (cap@di.fc.ul.pt) * */ #define MRT6_BASE 200 #define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */ #define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */ #define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */ #define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */ #define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */ #define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */ #define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */ #define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */ #define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */ #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */ #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1) #define SIOCGETRPF (SIOCPROTOPRIVATE+2) #define MAXMIFS 32 typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */ typedef unsigned short mifi_t; #define ALL_MIFS ((mifi_t)(-1)) #ifndef IF_SETSIZE #define IF_SETSIZE 256 #endif typedef __u32 if_mask; #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */ #if !defined(__KERNEL__) && !defined(DIV_ROUND_UP) #define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y)) #endif typedef struct if_set { if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; } if_set; #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) #define IF_ZERO(p) bzero(p, sizeof(*(p))) /* * Passed by mrouted for an MRT_ADD_MIF - again we use the * mrouted 3.6 structures for compatibility */ struct mif6ctl { mifi_t mif6c_mifi; /* Index of MIF */ unsigned char mif6c_flags; /* MIFF_ flags */ unsigned char vifc_threshold; /* ttl limit */ __u16 mif6c_pifi; /* the index of the physical IF */ unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ }; #define MIFF_REGISTER 0x1 /* register vif */ /* * Cache manipulation structures for mrouted and PIMd */ struct mf6cctl { struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ mifi_t mf6cc_parent; /* Where it arrived */ struct if_set mf6cc_ifset; /* Where it is going */ }; /* * Group count retrieval for pim6sd */ struct sioc_sg_req6 { struct sockaddr_in6 src; struct sockaddr_in6 grp; unsigned long pktcnt; unsigned long bytecnt; unsigned long wrong_if; }; /* * To get vif packet counts */ struct sioc_mif_req6 { mifi_t mifi; /* Which iface */ unsigned long icount; /* In packets */ unsigned long ocount; /* Out packets */ unsigned long ibytes; /* In bytes */ unsigned long obytes; /* Out bytes */ }; /* * That's all usermode folks */ #ifdef __KERNEL__ #include <linux/pim.h> #include <linux/skbuff.h> /* for struct sk_buff_head */ #include <net/net_namespace.h> #ifdef CONFIG_IPV6_MROUTE static inline int ip6_mroute_opt(int opt) { return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); } #else static inline int ip6_mroute_opt(int opt) { return 0; } #endif struct sock; #ifdef CONFIG_IPV6_MROUTE extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); extern int ip6_mr_input(struct sk_buff *skb); extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); extern int ip6_mr_init(void); extern void ip6_mr_cleanup(void); #else static inline int ip6_mroute_setsockopt(struct sock *sock, int optname, char __user *optval, unsigned int optlen) { return -ENOPROTOOPT; } static inline int ip6_mroute_getsockopt(struct sock *sock, int optname, char __user *optval, int __user *optlen) { return -ENOPROTOOPT; } static inline int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) { return -ENOIOCTLCMD; } static inline int ip6_mr_init(void) { return 0; } static inline void ip6_mr_cleanup(void) { return; } #endif struct mif_device { struct net_device *dev; /* Device we are using */ unsigned long bytes_in,bytes_out; unsigned long pkt_in,pkt_out; /* Statistics */ unsigned long rate_limit; /* Traffic shaping (NI) */ unsigned char threshold; /* TTL threshold */ unsigned short flags; /* Control flags */ int link; /* Physical interface index */ }; #define VIFF_STATIC 0x8000 struct mfc6_cache { struct mfc6_cache *next; /* Next entry on cache line */ #ifdef CONFIG_NET_NS struct net *mfc6_net; #endif struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ struct in6_addr mf6c_origin; /* Source of packet */ mifi_t mf6c_parent; /* Source interface */ int mfc_flags; /* Flags on line */ union { struct { unsigned long expires; struct sk_buff_head unresolved; /* Unresolved buffers */ } unres; struct { unsigned long last_assert; int minvif; int maxvif; unsigned long bytes; unsigned long pkt; unsigned long wrong_if; unsigned char ttls[MAXMIFS]; /* TTL thresholds */ } res; } mfc_un; }; static inline struct net *mfc6_net(const struct mfc6_cache *mfc) { return read_pnet(&mfc->mfc6_net); } static inline void mfc6_net_set(struct mfc6_cache *mfc, struct net *net) { write_pnet(&mfc->mfc6_net, hold_net(net)); } #define MFC_STATIC 1 #define MFC_NOTIFY 2 #define MFC6_LINES 64 #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ (__force u32)(a)->s6_addr32[1] ^ \ (__force u32)(a)->s6_addr32[2] ^ \ (__force u32)(a)->s6_addr32[3] ^ \ (__force u32)(g)->s6_addr32[0] ^ \ (__force u32)(g)->s6_addr32[1] ^ \ (__force u32)(g)->s6_addr32[2] ^ \ (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ #endif #ifdef __KERNEL__ struct rtmsg; extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm, int nowait); #ifdef CONFIG_IPV6_MROUTE static inline struct sock *mroute6_socket(struct net *net) { return net->ipv6.mroute6_sk; } extern int ip6mr_sk_done(struct sock *sk); #else static inline struct sock *mroute6_socket(struct net *net) { return NULL; } static inline int ip6mr_sk_done(struct sock *sk) { return 0; } #endif #endif /* * Structure used to communicate from kernel to multicast router. * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} * used for IPv4 implementation). This is because this structure will be passed via an * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) */ struct mrt6msg { #define MRT6MSG_NOCACHE 1 #define MRT6MSG_WRONGMIF 2 #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ __u8 im6_mbz; /* must be zero */ __u8 im6_msgtype; /* what type of message */ __u16 im6_mif; /* mif rec'd on */ __u32 im6_pad; /* padding for 64 bit arch */ struct in6_addr im6_src, im6_dst; }; #endif