NetBSD/sys/netatalk/at_proto.c

106 lines
3.0 KiB
C

/* $NetBSD: at_proto.c,v 1.15 2007/08/30 02:17:36 dyoung Exp $ */
/*
* Copyright (c) 1990,1991 Regents of The University of Michigan.
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation, and that the name of The University
* of Michigan not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. This software is supplied as is without expressed or
* implied warranties of any kind.
*
* This product includes software developed by the University of
* California, Berkeley and its contributors.
*
* Research Systems Unix Group
* The University of Michigan
* c/o Wesley Craig
* 535 W. William Street
* Ann Arbor, Michigan
* +1-313-764-2278
* netatalk@umich.edu
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: at_proto.c,v 1.15 2007/08/30 02:17:36 dyoung Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/socket.h>
#include <sys/kernel.h>
#include <net/if.h>
#include <net/radix.h>
#include <net/if_ether.h>
#include <netinet/in.h>
#include <net/route.h>
#include <netatalk/at.h>
#include <netatalk/ddp.h>
#include <netatalk/at_var.h>
#include <netatalk/ddp_var.h>
#include <netatalk/at_extern.h>
DOMAIN_DEFINE(atalkdomain); /* forward declare and add to link set */
const struct protosw atalksw[] = {
{
.pr_type = SOCK_DGRAM,
.pr_domain = &atalkdomain,
.pr_protocol = ATPROTO_DDP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_output = ddp_output,
.pr_usrreq = ddp_usrreq,
.pr_init = ddp_init,
},
};
struct domain atalkdomain = {
.dom_family = PF_APPLETALK,
.dom_name = "appletalk",
.dom_init = NULL,
.dom_externalize = NULL,
.dom_dispose = NULL,
.dom_protosw = atalksw,
.dom_protoswNPROTOSW = &atalksw[__arraycount(atalksw)],
.dom_rtattach = rn_inithead,
.dom_rtoffset = 32,
.dom_maxrtkey = sizeof(struct sockaddr_at),
.dom_ifattach = NULL,
.dom_ifdetach = NULL,
.dom_ifqueues = { &atintrq1, &atintrq2 },
.dom_link = { NULL },
.dom_mowner = MOWNER_INIT("",""),
.dom_sa_cmpofs = offsetof(struct sockaddr_at, sat_addr),
.dom_sa_cmplen = sizeof(struct at_addr),
.dom_rtcache = LIST_HEAD_INITIALIZER(atalkdomain.dom_rtcache)
};
int
sockaddr_at_cmp(const struct sockaddr *sa1, const struct sockaddr *sa2)
{
int rc;
uint_fast8_t len;
const uint_fast8_t addrofs = offsetof(struct sockaddr_at, sat_addr),
addrend = addrofs + sizeof(struct at_addr);
const struct sockaddr_at *sat1, *sat2;
sat1 = satocsat(sa1);
sat2 = satocsat(sa2);
len = MIN(addrend, MIN(sat1->sat_len, sat2->sat_len));
if (len > addrofs &&
(rc = memcmp(&sat1->sat_addr, &sat2->sat_addr, len - addrofs)) != 0)
return rc;
return sat1->sat_len - sat2->sat_len;
}