252 lines
6.5 KiB
C
252 lines
6.5 KiB
C
#ifndef __LINUX_MROUTE_H
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#define __LINUX_MROUTE_H
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#include <linux/sockios.h>
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#include <linux/types.h>
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#ifdef __KERNEL__
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#include <linux/in.h>
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#endif
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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 mrouted 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 MRT_BASE 200
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#define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
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#define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
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#define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
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#define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
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#define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
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#define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
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#define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
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#define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
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#define MRT_PIM (MRT_BASE+8) /* enable PIM code */
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#define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */
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#define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
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#define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
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#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
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#define MAXVIFS 32
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typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
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typedef unsigned short vifi_t;
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#define ALL_VIFS ((vifi_t)(-1))
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/*
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* Same idea as select
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*/
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#define VIFM_SET(n,m) ((m)|=(1<<(n)))
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#define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
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#define VIFM_ISSET(n,m) ((m)&(1<<(n)))
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#define VIFM_CLRALL(m) ((m)=0)
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#define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
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#define VIFM_SAME(m1,m2) ((m1)==(m2))
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/*
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* Passed by mrouted for an MRT_ADD_VIF - again we use the
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* mrouted 3.6 structures for compatibility
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*/
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struct vifctl {
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vifi_t vifc_vifi; /* Index of VIF */
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unsigned char vifc_flags; /* VIFF_ flags */
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unsigned char vifc_threshold; /* ttl limit */
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unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
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union {
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struct in_addr vifc_lcl_addr; /* Local interface address */
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int vifc_lcl_ifindex; /* Local interface index */
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};
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struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
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};
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#define VIFF_TUNNEL 0x1 /* IPIP tunnel */
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#define VIFF_SRCRT 0x2 /* NI */
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#define VIFF_REGISTER 0x4 /* register vif */
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#define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of
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vifc_lcl_addr to find an interface */
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/*
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* Cache manipulation structures for mrouted and PIMd
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*/
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struct mfcctl {
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struct in_addr mfcc_origin; /* Origin of mcast */
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struct in_addr mfcc_mcastgrp; /* Group in question */
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vifi_t mfcc_parent; /* Where it arrived */
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unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */
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unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */
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unsigned int mfcc_byte_cnt;
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unsigned int mfcc_wrong_if;
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int mfcc_expire;
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};
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/*
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* Group count retrieval for mrouted
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*/
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struct sioc_sg_req {
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struct in_addr src;
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struct in_addr 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_vif_req {
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vifi_t vifi; /* 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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* This is the format the mroute daemon expects to see IGMP control
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* data. Magically happens to be like an IP packet as per the original
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*/
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struct igmpmsg {
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__u32 unused1,unused2;
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unsigned char im_msgtype; /* What is this */
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unsigned char im_mbz; /* Must be zero */
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unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */
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unsigned char unused3;
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struct in_addr im_src,im_dst;
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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/pim.h>
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#include <net/sock.h>
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#ifdef CONFIG_IP_MROUTE
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static inline int ip_mroute_opt(int opt)
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{
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return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10);
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}
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#else
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static inline int ip_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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#ifdef CONFIG_IP_MROUTE
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extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
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extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
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extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
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extern int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
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extern int ip_mr_init(void);
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#else
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static inline
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int ip_mroute_setsockopt(struct sock *sock,
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int optname, char __user *optval, unsigned int optlen)
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{
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return -ENOPROTOOPT;
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}
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static inline
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int ip_mroute_getsockopt(struct sock *sock,
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int optname, char __user *optval, int __user *optlen)
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{
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return -ENOPROTOOPT;
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}
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static inline
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int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
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{
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return -ENOIOCTLCMD;
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}
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static inline int ip_mr_init(void)
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{
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return 0;
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}
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#endif
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struct vif_device {
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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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__be32 local,remote; /* Addresses(remote for tunnels)*/
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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 mfc_cache {
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struct list_head list;
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__be32 mfc_mcastgrp; /* Group the entry belongs to */
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__be32 mfc_origin; /* Source of packet */
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vifi_t mfc_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[MAXVIFS]; /* TTL thresholds */
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} res;
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} mfc_un;
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struct rcu_head rcu;
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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 MFC_LINES 64
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#ifdef __BIG_ENDIAN
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#define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
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#else
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#define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
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#endif
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#endif
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#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
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/*
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* Pseudo messages used by mrouted
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*/
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#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
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#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
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#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
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#ifdef __KERNEL__
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struct rtmsg;
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extern int ipmr_get_route(struct net *net, struct sk_buff *skb,
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__be32 saddr, __be32 daddr,
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struct rtmsg *rtm, int nowait);
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#endif
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#endif
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