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at_proto.c revision 1.12.4.1
      1  1.12.4.1        ad /*	$NetBSD: at_proto.c,v 1.12.4.1 2007/06/08 14:17:39 ad Exp $	*/
      2       1.1  christos 
      3       1.1  christos /*
      4       1.1  christos  * Copyright (c) 1990,1991 Regents of The University of Michigan.
      5       1.1  christos  * All Rights Reserved.
      6       1.1  christos  *
      7       1.1  christos  * Permission to use, copy, modify, and distribute this software and
      8       1.1  christos  * its documentation for any purpose and without fee is hereby granted,
      9       1.1  christos  * provided that the above copyright notice appears in all copies and
     10       1.1  christos  * that both that copyright notice and this permission notice appear
     11       1.1  christos  * in supporting documentation, and that the name of The University
     12       1.1  christos  * of Michigan not be used in advertising or publicity pertaining to
     13       1.1  christos  * distribution of the software without specific, written prior
     14       1.1  christos  * permission. This software is supplied as is without expressed or
     15       1.1  christos  * implied warranties of any kind.
     16       1.1  christos  *
     17       1.1  christos  * This product includes software developed by the University of
     18       1.1  christos  * California, Berkeley and its contributors.
     19       1.1  christos  *
     20       1.1  christos  *	Research Systems Unix Group
     21       1.1  christos  *	The University of Michigan
     22       1.1  christos  *	c/o Wesley Craig
     23       1.1  christos  *	535 W. William Street
     24       1.1  christos  *	Ann Arbor, Michigan
     25       1.1  christos  *	+1-313-764-2278
     26       1.1  christos  *	netatalk (at) umich.edu
     27       1.1  christos  */
     28       1.3     lukem 
     29       1.3     lukem #include <sys/cdefs.h>
     30  1.12.4.1        ad __KERNEL_RCSID(0, "$NetBSD: at_proto.c,v 1.12.4.1 2007/06/08 14:17:39 ad Exp $");
     31       1.1  christos 
     32       1.1  christos #include <sys/param.h>
     33       1.1  christos #include <sys/systm.h>
     34       1.1  christos #include <sys/protosw.h>
     35       1.1  christos #include <sys/domain.h>
     36       1.1  christos #include <sys/socket.h>
     37       1.1  christos 
     38       1.1  christos #include <sys/kernel.h>
     39       1.1  christos #include <net/if.h>
     40       1.1  christos #include <net/radix.h>
     41       1.1  christos #include <net/if_ether.h>
     42       1.1  christos #include <netinet/in.h>
     43       1.1  christos #include <net/route.h>
     44       1.1  christos 
     45       1.1  christos #include <netatalk/at.h>
     46       1.1  christos #include <netatalk/ddp.h>
     47       1.1  christos #include <netatalk/at_var.h>
     48       1.1  christos #include <netatalk/ddp_var.h>
     49       1.1  christos #include <netatalk/at_extern.h>
     50       1.1  christos 
     51       1.6      matt DOMAIN_DEFINE(atalkdomain);	/* forward declare and add to link set */
     52       1.1  christos 
     53       1.5      matt const struct protosw atalksw[] = {
     54       1.1  christos     {
     55      1.12      matt 	.pr_type = SOCK_DGRAM,
     56      1.12      matt 	.pr_domain = &atalkdomain,
     57      1.12      matt 	.pr_protocol = ATPROTO_DDP,
     58      1.12      matt 	.pr_flags = PR_ATOMIC|PR_ADDR,
     59      1.12      matt 	.pr_output = ddp_output,
     60      1.12      matt 	.pr_usrreq = ddp_usrreq,
     61      1.12      matt 	.pr_init = ddp_init,
     62       1.1  christos     },
     63       1.1  christos };
     64       1.1  christos 
     65  1.12.4.1        ad POOL_INIT(sockaddr_at_pool, sizeof(struct sockaddr_at), 0, 0, 0,
     66  1.12.4.1        ad     "sockaddr_at_pool", NULL, IPL_NET);
     67  1.12.4.1        ad 
     68      1.12      matt struct domain atalkdomain = {
     69      1.11    dyoung 	.dom_family = PF_APPLETALK,
     70      1.11    dyoung 	.dom_name = "appletalk",
     71      1.11    dyoung 	.dom_init = NULL,
     72      1.11    dyoung 	.dom_externalize = NULL,
     73      1.11    dyoung 	.dom_dispose = NULL,
     74      1.11    dyoung 	.dom_protosw = atalksw,
     75  1.12.4.1        ad 	.dom_protoswNPROTOSW = &atalksw[__arraycount(atalksw)],
     76      1.11    dyoung 	.dom_rtattach = rn_inithead,
     77      1.11    dyoung 	.dom_rtoffset = 32,
     78      1.11    dyoung 	.dom_maxrtkey = sizeof(struct sockaddr_at),
     79      1.11    dyoung 	.dom_ifattach = NULL,
     80      1.11    dyoung 	.dom_ifdetach = NULL,
     81      1.11    dyoung 	.dom_ifqueues = { &atintrq1, &atintrq2 },
     82      1.11    dyoung 	.dom_link = { NULL },
     83      1.11    dyoung 	.dom_mowner = MOWNER_INIT("",""),
     84  1.12.4.1        ad 	.dom_sa_pool = &sockaddr_at_pool,
     85  1.12.4.1        ad 	.dom_sa_len = sizeof(struct sockaddr_at),
     86  1.12.4.1        ad 	.dom_sa_cmpofs = offsetof(struct sockaddr_at, sat_addr),
     87  1.12.4.1        ad 	.dom_sa_cmplen = sizeof(struct at_addr),
     88  1.12.4.1        ad 	.dom_rtcache = LIST_HEAD_INITIALIZER(atalkdomain.dom_rtcache)
     89       1.1  christos };
     90  1.12.4.1        ad 
     91  1.12.4.1        ad int
     92  1.12.4.1        ad sockaddr_at_cmp(const struct sockaddr *sa1, const struct sockaddr *sa2)
     93  1.12.4.1        ad {
     94  1.12.4.1        ad 	int rc;
     95  1.12.4.1        ad 	uint_fast8_t len;
     96  1.12.4.1        ad 	const uint_fast8_t addrofs = offsetof(struct sockaddr_at, sat_addr),
     97  1.12.4.1        ad 			   addrend = addrofs + sizeof(struct at_addr);
     98  1.12.4.1        ad 	const struct sockaddr_at *sat1, *sat2;
     99  1.12.4.1        ad 
    100  1.12.4.1        ad 	sat1 = satocsat(sa1);
    101  1.12.4.1        ad 	sat2 = satocsat(sa2);
    102  1.12.4.1        ad 
    103  1.12.4.1        ad 	len = MIN(addrend, MIN(sat1->sat_len, sat2->sat_len));
    104  1.12.4.1        ad 
    105  1.12.4.1        ad 	if (len > addrofs &&
    106  1.12.4.1        ad 	    (rc = memcmp(&sat1->sat_addr, &sat2->sat_addr, len - addrofs)) != 0)
    107  1.12.4.1        ad 		return rc;
    108  1.12.4.1        ad 
    109  1.12.4.1        ad 	return sat1->sat_len - sat2->sat_len;
    110  1.12.4.1        ad }
    111