1*6e4cb2b9Sbouyer /* $NetBSD: can_pcb.h,v 1.2 2017/05/27 21:02:56 bouyer Exp $ */ 2*6e4cb2b9Sbouyer 3*6e4cb2b9Sbouyer /*- 4*6e4cb2b9Sbouyer * Copyright (c) 2003, 2017 The NetBSD Foundation, Inc. 5*6e4cb2b9Sbouyer * All rights reserved. 6*6e4cb2b9Sbouyer * 7*6e4cb2b9Sbouyer * This code is derived from software contributed to The NetBSD Foundation 8*6e4cb2b9Sbouyer * by Robert Swindells and Manuel Bouyer 9*6e4cb2b9Sbouyer * 10*6e4cb2b9Sbouyer * Redistribution and use in source and binary forms, with or without 11*6e4cb2b9Sbouyer * modification, are permitted provided that the following conditions 12*6e4cb2b9Sbouyer * are met: 13*6e4cb2b9Sbouyer * 1. Redistributions of source code must retain the above copyright 14*6e4cb2b9Sbouyer * notice, this list of conditions and the following disclaimer. 15*6e4cb2b9Sbouyer * 2. Redistributions in binary form must reproduce the above copyright 16*6e4cb2b9Sbouyer * notice, this list of conditions and the following disclaimer in the 17*6e4cb2b9Sbouyer * documentation and/or other materials provided with the distribution. 18*6e4cb2b9Sbouyer * 19*6e4cb2b9Sbouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*6e4cb2b9Sbouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*6e4cb2b9Sbouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*6e4cb2b9Sbouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*6e4cb2b9Sbouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*6e4cb2b9Sbouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*6e4cb2b9Sbouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*6e4cb2b9Sbouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*6e4cb2b9Sbouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*6e4cb2b9Sbouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*6e4cb2b9Sbouyer * POSSIBILITY OF SUCH DAMAGE. 30*6e4cb2b9Sbouyer */ 31*6e4cb2b9Sbouyer 32*6e4cb2b9Sbouyer #ifndef _NETCAN_CAN_PCB_H_ 33*6e4cb2b9Sbouyer #define _NETCAN_CAN_PCB_H_ 34*6e4cb2b9Sbouyer 35*6e4cb2b9Sbouyer #include <sys/queue.h> 36*6e4cb2b9Sbouyer 37*6e4cb2b9Sbouyer /* 38*6e4cb2b9Sbouyer * Common structure pcb for can protocol implementation. 39*6e4cb2b9Sbouyer * Here are stored pointers to local and foreign host table 40*6e4cb2b9Sbouyer * entries, local and foreign socket numbers, and pointers 41*6e4cb2b9Sbouyer * up (to a socket structure) and down (to a protocol-specific) 42*6e4cb2b9Sbouyer * control block. 43*6e4cb2b9Sbouyer */ 44*6e4cb2b9Sbouyer struct canpcbpolicy; 45*6e4cb2b9Sbouyer 46*6e4cb2b9Sbouyer 47*6e4cb2b9Sbouyer struct canpcb { 48*6e4cb2b9Sbouyer LIST_ENTRY(canpcb) canp_hash; 49*6e4cb2b9Sbouyer LIST_ENTRY(canpcb) canp_lhash; 50*6e4cb2b9Sbouyer TAILQ_ENTRY(canpcb) canp_queue; 51*6e4cb2b9Sbouyer kmutex_t canp_mtx; /* protect states and refcount */ 52*6e4cb2b9Sbouyer int canp_state; 53*6e4cb2b9Sbouyer int canp_flags; 54*6e4cb2b9Sbouyer struct socket *canp_socket; /* back pointer to socket */ 55*6e4cb2b9Sbouyer struct ifnet *canp_ifp; /* interface this socket is bound to */ 56*6e4cb2b9Sbouyer 57*6e4cb2b9Sbouyer struct canpcbtable *canp_table; 58*6e4cb2b9Sbouyer struct can_filter *canp_filters; /* filter array */ 59*6e4cb2b9Sbouyer int canp_nfilters; /* size of canp_filters */ 60*6e4cb2b9Sbouyer 61*6e4cb2b9Sbouyer int canp_refcount; 62*6e4cb2b9Sbouyer }; 63*6e4cb2b9Sbouyer 64*6e4cb2b9Sbouyer LIST_HEAD(canpcbhead, canpcb); 65*6e4cb2b9Sbouyer 66*6e4cb2b9Sbouyer TAILQ_HEAD(canpcbqueue, canpcb); 67*6e4cb2b9Sbouyer 68*6e4cb2b9Sbouyer struct canpcbtable { 69*6e4cb2b9Sbouyer struct canpcbqueue canpt_queue; 70*6e4cb2b9Sbouyer struct canpcbhead *canpt_bindhashtbl; 71*6e4cb2b9Sbouyer struct canpcbhead *canpt_connecthashtbl; 72*6e4cb2b9Sbouyer u_long canpt_bindhash; 73*6e4cb2b9Sbouyer u_long canpt_connecthash; 74*6e4cb2b9Sbouyer }; 75*6e4cb2b9Sbouyer 76*6e4cb2b9Sbouyer /* states in canp_state: */ 77*6e4cb2b9Sbouyer #define CANP_DETACHED 0 78*6e4cb2b9Sbouyer #define CANP_ATTACHED 1 79*6e4cb2b9Sbouyer #define CANP_BOUND 2 80*6e4cb2b9Sbouyer #define CANP_CONNECTED 3 81*6e4cb2b9Sbouyer 82*6e4cb2b9Sbouyer /* flags in canp_flags: */ 83*6e4cb2b9Sbouyer #define CANP_NO_LOOPBACK 0x0001 /* local loopback disabled */ 84*6e4cb2b9Sbouyer #define CANP_RECEIVE_OWN 0x0002 /* receive own message */ 85*6e4cb2b9Sbouyer 86*6e4cb2b9Sbouyer 87*6e4cb2b9Sbouyer #define sotocanpcb(so) ((struct canpcb *)(so)->so_pcb) 88*6e4cb2b9Sbouyer 89*6e4cb2b9Sbouyer #ifdef _KERNEL 90*6e4cb2b9Sbouyer void can_losing(struct canpcb *); 91*6e4cb2b9Sbouyer int can_pcballoc (struct socket *, void *); 92*6e4cb2b9Sbouyer int can_pcbbind(void *, struct sockaddr_can *, struct lwp *); 93*6e4cb2b9Sbouyer int can_pcbconnect(void *, struct sockaddr_can *); 94*6e4cb2b9Sbouyer void can_pcbdetach(void *); 95*6e4cb2b9Sbouyer void can_pcbdisconnect(void *); 96*6e4cb2b9Sbouyer void can_pcbinit(struct canpcbtable *, int, int); 97*6e4cb2b9Sbouyer int can_pcbnotify(struct canpcbtable *, u_int32_t, 98*6e4cb2b9Sbouyer u_int32_t, int, void (*)(struct canpcb *, int)); 99*6e4cb2b9Sbouyer void can_pcbnotifyall(struct canpcbtable *, u_int32_t, int, 100*6e4cb2b9Sbouyer void (*)(struct canpcb *, int)); 101*6e4cb2b9Sbouyer void can_pcbpurgeif0(struct canpcbtable *, struct ifnet *); 102*6e4cb2b9Sbouyer void can_pcbpurgeif(struct canpcbtable *, struct ifnet *); 103*6e4cb2b9Sbouyer void can_pcbstate(struct canpcb *, int); 104*6e4cb2b9Sbouyer void can_setsockaddr(struct canpcb *, struct sockaddr_can *); 105*6e4cb2b9Sbouyer int can_pcbsetfilter(struct canpcb *, struct can_filter *, int); 106*6e4cb2b9Sbouyer bool can_pcbfilter(struct canpcb *, struct mbuf *); 107*6e4cb2b9Sbouyer 108*6e4cb2b9Sbouyer /* refcount management */ 109*6e4cb2b9Sbouyer void canp_ref(struct canpcb *); 110*6e4cb2b9Sbouyer void canp_unref(struct canpcb *); 111*6e4cb2b9Sbouyer #endif 112*6e4cb2b9Sbouyer 113*6e4cb2b9Sbouyer #endif /* _NETCAN_CAN_PCB_H_ */ 114