/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* bos72F src/bos/kernext/inet/ip_mroute.h 1.6.1.1 */ /* */ /* Licensed Materials - Property of IBM */ /* */ /* Restricted Materials of IBM */ /* */ /* COPYRIGHT International Business Machines Corp. 1996,2017 */ /* All Rights Reserved */ /* */ /* US Government Users Restricted Rights - Use, duplication or */ /* disclosure restricted by GSA ADP Schedule Contract with IBM Corp. */ /* */ /* IBM_PROLOG_END_TAG */ /* @(#)22 1.6.1.1 src/bos/kernext/inet/ip_mroute.h, sysxinet, bos72F, f2017_07A8 2/8/17 01:16:35 */ /* * COMPONENT_NAME: sysxinet * * FUNCTIONS: GET_TIME * IP_MROUTE_LOCKINIT * IP_MROUTE_LOCK * IP_MROUTE_LOCK_DECL * IP_MROUTE_UNLOCK * MFCHASHMOD * VIFM_CLR * VIFM_CLRALL * VIFM_COPY * VIFM_ISSET * VIFM_SAME * VIFM_SET * microtime * vifbitmap_t * vifi_t * * ORIGINS: 26,27,85,89 * * This module contains code. -- (IBM * Confidential Restricted when combined with the aggregated * modules for this product) * OBJECT CODE ONLY SOURCE MATERIALS * * (C) COPYRIGHT International Business Machines Corp. 1996 * All Rights Reserved * US Government Users Restricted Rights - Use, duplication or * disclosure restricted by GSA ADP Schedule Contract with IBM Corp. */ /* * Definitions for IP multicast forwarding. * * Written by David Waitzman, BBN Labs, August 1988. * Modified by Steve Deering, Stanford, February 1989. * Modified by Ajit Thyagarajan, PARC, August 1993. * Modified by Ajit Thyagarajan, PARC, August 1994. * * MROUTING $Revision: 1.2 $ */ #include #ifndef _IP_MROUTE_ #define _IP_MROUTE_ /* * Multicast Routing set/getsockopt commands. */ #define MRT_INIT 100 /* initialize forwarder */ #define MRT_DONE 101 /* shut down forwarder */ #define MRT_ADD_VIF 102 /* create virtual interface */ #define MRT_DEL_VIF 103 /* delete virtual interface */ #define MRT_ADD_MFC 104 /* insert forwarding cache entry */ #define MRT_DEL_MFC 105 /* delete forwarding cache entry */ #define MRT_VERSION 106 /* get kernel version number */ #define MRT_ASSERT 107 /* enable PIM assert processing */ /* * The kernel version number. */ #define KP_VERSION 0x0305 #define microtime(tv) { \ struct timestruc_t ct; \ \ curtime(&ct); \ (tv)->tv_sec = (int) ct.tv_sec; \ (tv)->tv_usec = (int) ct.tv_nsec / 1000; \ } #define GET_TIME(t) microtime(&t) /* * Types and macros for handling bitmaps with one bit per virtual interface. */ #define MAXVIFS 32 typedef u_long vifbitmap_t; typedef u_short vifi_t; /* type of a vif index */ #define ALL_VIFS (vifi_t)-1 #define VIFM_SET(n, m) ((m) |= (1 << (n))) #define VIFM_CLR(n, m) ((m) &= ~(1 << (n))) #define VIFM_ISSET(n, m) ((m) & (1 << (n))) #define VIFM_CLRALL(m) ((m) = 0x00000000) #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom)) #define VIFM_SAME(m1, m2) ((m1) == (m2)) /* * Argument structure for MRT_ADD_VIF. * (MRT_DEL_VIF takes a single vifi_t argument.) */ struct vifctl { vifi_t vifc_vifi; /* the index of the vif to be added */ u_char vifc_flags; /* VIFF_ flags defined below */ u_char vifc_threshold; /* min ttl required to forward on vif*/ u_int vifc_rate_limit; /* max rate */ struct in_addr vifc_lcl_addr; /* local interface address */ struct in_addr vifc_rmt_addr; /* remote address (tunnels only) */ }; #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */ #define VIFF_SRCRT 0x2 /* tunnel uses IP src routing */ /* * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC * (mfcc_tos to be added at a future point) */ struct mfcctl { struct in_addr mfcc_origin; /* ip origin of mcasts */ struct in_addr mfcc_mcastgrp; /* multicast group associated*/ vifi_t mfcc_parent; /* incoming vif */ u_char mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ }; /* * The kernel's multicast routing statistics. */ struct mrtstat { u_long mrts_mfc_lookups; /* # forw. cache hash table hits */ u_long mrts_mfc_misses; /* # forw. cache hash table misses */ u_long mrts_upcalls; /* # calls to mrouted */ u_long mrts_no_route; /* no route for packet's origin */ u_long mrts_bad_tunnel; /* malformed tunnel options */ u_long mrts_cant_tunnel; /* no room for tunnel options */ u_long mrts_wrong_if; /* arrived on wrong interface */ u_long mrts_upq_ovflw; /* upcall Q overflow */ u_long mrts_cache_cleanups; /* # entries with no upcalls */ u_long mrts_drop_sel; /* pkts dropped selectively */ u_long mrts_q_overflow; /* pkts dropped - Q overflow */ u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */ u_long mrts_upq_sockfull; /* upcalls dropped - socket full */ }; /* * Argument structure used by mrouted to get src-grp pkt counts */ struct sioc_sg_req { struct in_addr src; struct in_addr grp; __ulong32_t pktcnt; __ulong32_t bytecnt; __ulong32_t wrong_if; }; /* * Argument structure used by mrouted to get vif pkt counts */ struct sioc_vif_req { vifi_t vifi; /* vif number */ __ulong32_t icount; /* Input packet count on vif */ __ulong32_t ocount; /* Output packet count on vif */ __ulong32_t ibytes; /* Input byte count on vif */ __ulong32_t obytes; /* Output byte count on vif */ }; /* * The kernel's virtual-interface structure. */ struct vif { u_char v_flags; /* VIFF_ flags defined above */ u_char v_threshold; /* min ttl required to forward on vif*/ u_int v_rate_limit; /* max rate */ struct tbf *v_tbf; /* token bucket structure at intf. */ struct in_addr v_lcl_addr; /* local interface address */ struct in_addr v_rmt_addr; /* remote address (tunnels only) */ struct ifnet *v_ifp; /* pointer to interface */ u_long v_pkt_in; /* # pkts in on interface */ u_long v_pkt_out; /* # pkts out on interface */ u_long v_bytes_in; /* # bytes in on interface */ u_long v_bytes_out; /* # bytes out on interface */ struct route v_route; /* Cached route if this is a tunnel */ #ifdef RSVP_ISI u_int v_rsvp_on; /* # RSVP listening on this vif */ struct socket *v_rsvpd; /* # RSVPD daemon */ #endif /* RSVP_ISI */ }; /* * The kernel's multicast forwarding cache entry structure * (A field for the type of service (mfc_tos) is to be added * at a future point) */ struct mfc { struct in_addr mfc_origin; /* ip origin of mcasts */ struct in_addr mfc_mcastgrp; /* multicast group associated*/ vifi_t mfc_parent; /* incoming vif */ u_char mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ u_long mfc_pkt_cnt; /* pkt count for src-grp */ u_long mfc_byte_cnt; /* byte count for src-grp */ u_long mfc_wrong_if; /* wrong if for src-grp */ int mfc_expire; /* time to clean entry up */ struct timeval mfc_last_assert; /* last time I sent an assert*/ struct rtdetq *mfc_stall; /* pkts waiting for route */ struct mfc *mfc_next; /* hash table linkage */ }; /* * Struct used to communicate from kernel to multicast router * note the convenient similarity to an IP packet */ struct igmpmsg { __ulong32_t unused1; __ulong32_t unused2; u_char im_msgtype; /* what type of message */ #define IGMPMSG_NOCACHE 1 #define IGMPMSG_WRONGVIF 2 u_char im_mbz; /* must be zero */ u_char im_vif; /* vif rec'd on */ u_char unused3; struct in_addr im_src, im_dst; }; /* * Argument structure used for pkt info. while upcall is made */ struct rtdetq { struct mbuf *m; /* A copy of the packet */ struct ifnet *ifp; /* Interface pkt came in on */ #ifdef UPCALL_TIMING struct timeval t; /* Timestamp */ #endif /* UPCALL_TIMING */ struct rtdetq *next; }; #define MFCTBLSIZ 256 #if (MFCTBLSIZ & (MFCTBLSIZ - 1)) == 0 /* from sys:route.h */ #define MFCHASHMOD(h) ((h) & (MFCTBLSIZ - 1)) #else #define MFCHASHMOD(h) ((h) % MFCTBLSIZ) #endif #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ /* * Token Bucket filter code */ #define MAX_BKT_SIZE 10000 /* 10K bytes size */ #define MAXQSIZE 10 /* max # of pkts in queue */ /* * queue structure at each vif */ struct pkt_queue { u_long pkt_len; /* length of packet in queue */ struct mbuf *pkt_m; /* pointer to packet mbuf */ struct ip *pkt_ip; /* pointer to ip header */ }; /* * the token bucket filter at each vif */ struct tbf { u_long last_pkt_t; /* arr. time of last pkt */ u_long n_tok; /* no of tokens in bucket */ u_long q_len; /* length of queue at this vif */ }; #ifdef _KERNEL extern struct socket *ip_mrouter; extern simple_lock_data_t ip_mrouter_lock; extern simple_lock_data_t ip_mrouter_variable_lock; #define IP_MROUTE_LOCKINIT() \ do { \ lock_alloc(&ip_mrouter_lock, LOCK_ALLOC_PIN, IP_MROUTE_LOCK_FAM, -1); \ simple_lock_init(&ip_mrouter_lock); \ lock_alloc(&ip_mrouter_variable_lock, LOCK_ALLOC_PIN, IP_MROUTE_LOCK_FAM, -1); \ simple_lock_init(&ip_mrouter_variable_lock); \ } while(0) #define IP_MROUTE_LOCK_DECL() int _ipmrl_spl; #define IP_MROUTE_LOCK() _ipmrl_spl = disable_lock(PL_IMP, &ip_mrouter_lock) #define IP_MROUTE_UNLOCK() unlock_enable(_ipmrl_spl, &ip_mrouter_lock) #define IP_MROUTE_VARIABLE_LOCK_DECL() int _ipmrl_variable_spl #define IP_MROUTE_VARIABLE_LOCK() _ipmrl_variable_spl = disable_lock(PL_IMP, &ip_mrouter_variable_lock) #define IP_MROUTE_VARIABLE_UNLOCK() unlock_enable(_ipmrl_variable_spl, &ip_mrouter_variable_lock) #define SWAP_PRIORITY() \ do { \ int swap_priority_spl; \ if ((ip_mrouter)->so_special & SP_DISABLE) { \ swap_priority_spl = _ipmrl_variable_spl; \ _ipmrl_variable_spl = (ip_mrouter)->so_lock->spl; \ (ip_mrouter)->so_lock->spl = swap_priority_spl; \ } \ } while(0) #endif /* KERNEL */ #endif /* _IP_MROUTE_ */