1df8bae1dSRodney W. Grimes /* 2df8bae1dSRodney W. Grimes * Copyright (c) 1980, 1986, 1993 3df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 4df8bae1dSRodney W. Grimes * 5df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 6df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 7df8bae1dSRodney W. Grimes * are met: 8df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 9df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 10df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 11df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 12df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 13df8bae1dSRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 14df8bae1dSRodney W. Grimes * must display the following acknowledgement: 15df8bae1dSRodney W. Grimes * This product includes software developed by the University of 16df8bae1dSRodney W. Grimes * California, Berkeley and its contributors. 17df8bae1dSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 18df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 19df8bae1dSRodney W. Grimes * without specific prior written permission. 20df8bae1dSRodney W. Grimes * 21df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31df8bae1dSRodney W. Grimes * SUCH DAMAGE. 32df8bae1dSRodney W. Grimes * 33df8bae1dSRodney W. Grimes * @(#)if.c 8.3 (Berkeley) 1/4/94 34074c4a4eSGarrett Wollman * $Id: if.c,v 1.10 1994/11/10 18:49:23 guido Exp $ 35df8bae1dSRodney W. Grimes */ 36df8bae1dSRodney W. Grimes 37df8bae1dSRodney W. Grimes #include <sys/param.h> 38df8bae1dSRodney W. Grimes #include <sys/mbuf.h> 39df8bae1dSRodney W. Grimes #include <sys/systm.h> 40df8bae1dSRodney W. Grimes #include <sys/proc.h> 41df8bae1dSRodney W. Grimes #include <sys/socket.h> 42df8bae1dSRodney W. Grimes #include <sys/socketvar.h> 43df8bae1dSRodney W. Grimes #include <sys/protosw.h> 44df8bae1dSRodney W. Grimes #include <sys/kernel.h> 45df8bae1dSRodney W. Grimes #include <sys/ioctl.h> 462624cf89SGarrett Wollman #include <sys/errno.h> 47df8bae1dSRodney W. Grimes 48df8bae1dSRodney W. Grimes #include <net/if.h> 49df8bae1dSRodney W. Grimes #include <net/if_dl.h> 50df8bae1dSRodney W. Grimes #include <net/if_types.h> 519448326fSPoul-Henning Kamp #include <net/radix.h> 52fe95e21fSPoul-Henning Kamp #include <ether.h> 53df8bae1dSRodney W. Grimes 54df8bae1dSRodney W. Grimes int ifqmaxlen = IFQ_MAXLEN; 55df8bae1dSRodney W. Grimes 56df8bae1dSRodney W. Grimes /* 57df8bae1dSRodney W. Grimes * Network interface utility routines. 58df8bae1dSRodney W. Grimes * 59df8bae1dSRodney W. Grimes * Routines with ifa_ifwith* names take sockaddr *'s as 60df8bae1dSRodney W. Grimes * parameters. 61df8bae1dSRodney W. Grimes */ 62df8bae1dSRodney W. Grimes void 63df8bae1dSRodney W. Grimes ifinit() 64df8bae1dSRodney W. Grimes { 65df8bae1dSRodney W. Grimes register struct ifnet *ifp; 66df8bae1dSRodney W. Grimes 67df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) 68df8bae1dSRodney W. Grimes if (ifp->if_snd.ifq_maxlen == 0) 69df8bae1dSRodney W. Grimes ifp->if_snd.ifq_maxlen = ifqmaxlen; 70df8bae1dSRodney W. Grimes if_slowtimo(0); 71df8bae1dSRodney W. Grimes } 72df8bae1dSRodney W. Grimes 73df8bae1dSRodney W. Grimes #ifdef vax 74df8bae1dSRodney W. Grimes /* 75df8bae1dSRodney W. Grimes * Call each interface on a Unibus reset. 76df8bae1dSRodney W. Grimes */ 77df8bae1dSRodney W. Grimes void 78df8bae1dSRodney W. Grimes ifubareset(uban) 79df8bae1dSRodney W. Grimes int uban; 80df8bae1dSRodney W. Grimes { 81df8bae1dSRodney W. Grimes register struct ifnet *ifp; 82df8bae1dSRodney W. Grimes 83df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) 84df8bae1dSRodney W. Grimes if (ifp->if_reset) 85df8bae1dSRodney W. Grimes (*ifp->if_reset)(ifp->if_unit, uban); 86df8bae1dSRodney W. Grimes } 87df8bae1dSRodney W. Grimes #endif 88df8bae1dSRodney W. Grimes 89df8bae1dSRodney W. Grimes int if_index = 0; 90df8bae1dSRodney W. Grimes struct ifaddr **ifnet_addrs; 91df8bae1dSRodney W. Grimes static char *sprint_d __P((u_int, char *, int)); 92df8bae1dSRodney W. Grimes 93df8bae1dSRodney W. Grimes /* 94df8bae1dSRodney W. Grimes * Attach an interface to the 95df8bae1dSRodney W. Grimes * list of "active" interfaces. 96df8bae1dSRodney W. Grimes */ 97df8bae1dSRodney W. Grimes void 98df8bae1dSRodney W. Grimes if_attach(ifp) 99df8bae1dSRodney W. Grimes struct ifnet *ifp; 100df8bae1dSRodney W. Grimes { 101df8bae1dSRodney W. Grimes unsigned socksize, ifasize; 102f23b4c91SGarrett Wollman int namelen, unitlen, masklen; 103df8bae1dSRodney W. Grimes char workbuf[12], *unitname; 104df8bae1dSRodney W. Grimes register struct ifnet **p = &ifnet; 105df8bae1dSRodney W. Grimes register struct sockaddr_dl *sdl; 106df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 107df8bae1dSRodney W. Grimes static int if_indexlim = 8; 108f23b4c91SGarrett Wollman 109df8bae1dSRodney W. Grimes 110df8bae1dSRodney W. Grimes while (*p) 111df8bae1dSRodney W. Grimes p = &((*p)->if_next); 112df8bae1dSRodney W. Grimes *p = ifp; 113df8bae1dSRodney W. Grimes ifp->if_index = ++if_index; 114df8bae1dSRodney W. Grimes if (ifnet_addrs == 0 || if_index >= if_indexlim) { 115df8bae1dSRodney W. Grimes unsigned n = (if_indexlim <<= 1) * sizeof(ifa); 116df8bae1dSRodney W. Grimes struct ifaddr **q = (struct ifaddr **) 117df8bae1dSRodney W. Grimes malloc(n, M_IFADDR, M_WAITOK); 118df8bae1dSRodney W. Grimes if (ifnet_addrs) { 119df8bae1dSRodney W. Grimes bcopy((caddr_t)ifnet_addrs, (caddr_t)q, n/2); 120df8bae1dSRodney W. Grimes free((caddr_t)ifnet_addrs, M_IFADDR); 121df8bae1dSRodney W. Grimes } 122df8bae1dSRodney W. Grimes ifnet_addrs = q; 123df8bae1dSRodney W. Grimes } 124df8bae1dSRodney W. Grimes /* 125df8bae1dSRodney W. Grimes * create a Link Level name for this device 126df8bae1dSRodney W. Grimes */ 127df8bae1dSRodney W. Grimes unitname = sprint_d((u_int)ifp->if_unit, workbuf, sizeof(workbuf)); 128df8bae1dSRodney W. Grimes namelen = strlen(ifp->if_name); 129df8bae1dSRodney W. Grimes unitlen = strlen(unitname); 130df8bae1dSRodney W. Grimes #define _offsetof(t, m) ((int)((caddr_t)&((t *)0)->m)) 131df8bae1dSRodney W. Grimes masklen = _offsetof(struct sockaddr_dl, sdl_data[0]) + 132df8bae1dSRodney W. Grimes unitlen + namelen; 133df8bae1dSRodney W. Grimes socksize = masklen + ifp->if_addrlen; 134df8bae1dSRodney W. Grimes #define ROUNDUP(a) (1 + (((a) - 1) | (sizeof(long) - 1))) 135df8bae1dSRodney W. Grimes socksize = ROUNDUP(socksize); 136df8bae1dSRodney W. Grimes if (socksize < sizeof(*sdl)) 137df8bae1dSRodney W. Grimes socksize = sizeof(*sdl); 138df8bae1dSRodney W. Grimes ifasize = sizeof(*ifa) + 2 * socksize; 1399448326fSPoul-Henning Kamp ifa = (struct ifaddr *)malloc(ifasize, M_IFADDR, M_WAITOK); 1409448326fSPoul-Henning Kamp if (ifa) { 141df8bae1dSRodney W. Grimes bzero((caddr_t)ifa, ifasize); 142df8bae1dSRodney W. Grimes sdl = (struct sockaddr_dl *)(ifa + 1); 143df8bae1dSRodney W. Grimes sdl->sdl_len = socksize; 144df8bae1dSRodney W. Grimes sdl->sdl_family = AF_LINK; 145df8bae1dSRodney W. Grimes bcopy(ifp->if_name, sdl->sdl_data, namelen); 146df8bae1dSRodney W. Grimes bcopy(unitname, namelen + (caddr_t)sdl->sdl_data, unitlen); 147df8bae1dSRodney W. Grimes sdl->sdl_nlen = (namelen += unitlen); 148df8bae1dSRodney W. Grimes sdl->sdl_index = ifp->if_index; 149df8bae1dSRodney W. Grimes sdl->sdl_type = ifp->if_type; 150df8bae1dSRodney W. Grimes ifnet_addrs[if_index - 1] = ifa; 151df8bae1dSRodney W. Grimes ifa->ifa_ifp = ifp; 152df8bae1dSRodney W. Grimes ifa->ifa_next = ifp->if_addrlist; 153df8bae1dSRodney W. Grimes ifa->ifa_rtrequest = link_rtrequest; 154df8bae1dSRodney W. Grimes ifp->if_addrlist = ifa; 155df8bae1dSRodney W. Grimes ifa->ifa_addr = (struct sockaddr *)sdl; 156df8bae1dSRodney W. Grimes sdl = (struct sockaddr_dl *)(socksize + (caddr_t)sdl); 157df8bae1dSRodney W. Grimes ifa->ifa_netmask = (struct sockaddr *)sdl; 158df8bae1dSRodney W. Grimes sdl->sdl_len = masklen; 159df8bae1dSRodney W. Grimes while (namelen != 0) 160df8bae1dSRodney W. Grimes sdl->sdl_data[--namelen] = 0xff; 161df8bae1dSRodney W. Grimes } 162df8bae1dSRodney W. Grimes /* XXX -- Temporary fix before changing 10 ethernet drivers */ 163fe95e21fSPoul-Henning Kamp #if NETHER > 0 164df8bae1dSRodney W. Grimes if (ifp->if_output == ether_output) 165df8bae1dSRodney W. Grimes ether_ifattach(ifp); 166fe95e21fSPoul-Henning Kamp #endif 167df8bae1dSRodney W. Grimes } 168df8bae1dSRodney W. Grimes /* 169df8bae1dSRodney W. Grimes * Locate an interface based on a complete address. 170df8bae1dSRodney W. Grimes */ 171df8bae1dSRodney W. Grimes /*ARGSUSED*/ 172df8bae1dSRodney W. Grimes struct ifaddr * 173df8bae1dSRodney W. Grimes ifa_ifwithaddr(addr) 174df8bae1dSRodney W. Grimes register struct sockaddr *addr; 175df8bae1dSRodney W. Grimes { 176df8bae1dSRodney W. Grimes register struct ifnet *ifp; 177df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 178df8bae1dSRodney W. Grimes 179df8bae1dSRodney W. Grimes #define equal(a1, a2) \ 180df8bae1dSRodney W. Grimes (bcmp((caddr_t)(a1), (caddr_t)(a2), ((struct sockaddr *)(a1))->sa_len) == 0) 181df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) 182df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) { 183df8bae1dSRodney W. Grimes if (ifa->ifa_addr->sa_family != addr->sa_family) 184df8bae1dSRodney W. Grimes continue; 185df8bae1dSRodney W. Grimes if (equal(addr, ifa->ifa_addr)) 186df8bae1dSRodney W. Grimes return (ifa); 187df8bae1dSRodney W. Grimes if ((ifp->if_flags & IFF_BROADCAST) && ifa->ifa_broadaddr && 188df8bae1dSRodney W. Grimes equal(ifa->ifa_broadaddr, addr)) 189df8bae1dSRodney W. Grimes return (ifa); 190df8bae1dSRodney W. Grimes } 191df8bae1dSRodney W. Grimes return ((struct ifaddr *)0); 192df8bae1dSRodney W. Grimes } 193df8bae1dSRodney W. Grimes /* 194df8bae1dSRodney W. Grimes * Locate the point to point interface with a given destination address. 195df8bae1dSRodney W. Grimes */ 196df8bae1dSRodney W. Grimes /*ARGSUSED*/ 197df8bae1dSRodney W. Grimes struct ifaddr * 198df8bae1dSRodney W. Grimes ifa_ifwithdstaddr(addr) 199df8bae1dSRodney W. Grimes register struct sockaddr *addr; 200df8bae1dSRodney W. Grimes { 201df8bae1dSRodney W. Grimes register struct ifnet *ifp; 202df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 203df8bae1dSRodney W. Grimes 204df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) 205df8bae1dSRodney W. Grimes if (ifp->if_flags & IFF_POINTOPOINT) 206df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) { 207df8bae1dSRodney W. Grimes if (ifa->ifa_addr->sa_family != addr->sa_family) 208df8bae1dSRodney W. Grimes continue; 209df8bae1dSRodney W. Grimes if (equal(addr, ifa->ifa_dstaddr)) 210df8bae1dSRodney W. Grimes return (ifa); 211df8bae1dSRodney W. Grimes } 212df8bae1dSRodney W. Grimes return ((struct ifaddr *)0); 213df8bae1dSRodney W. Grimes } 214df8bae1dSRodney W. Grimes 215df8bae1dSRodney W. Grimes /* 216df8bae1dSRodney W. Grimes * Find an interface on a specific network. If many, choice 217df8bae1dSRodney W. Grimes * is most specific found. 218df8bae1dSRodney W. Grimes */ 219df8bae1dSRodney W. Grimes struct ifaddr * 220df8bae1dSRodney W. Grimes ifa_ifwithnet(addr) 221df8bae1dSRodney W. Grimes struct sockaddr *addr; 222df8bae1dSRodney W. Grimes { 223df8bae1dSRodney W. Grimes register struct ifnet *ifp; 224df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 225df8bae1dSRodney W. Grimes struct ifaddr *ifa_maybe = (struct ifaddr *) 0; 226df8bae1dSRodney W. Grimes u_int af = addr->sa_family; 227df8bae1dSRodney W. Grimes char *addr_data = addr->sa_data, *cplim; 228df8bae1dSRodney W. Grimes 229df8bae1dSRodney W. Grimes if (af == AF_LINK) { 230df8bae1dSRodney W. Grimes register struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr; 231df8bae1dSRodney W. Grimes if (sdl->sdl_index && sdl->sdl_index <= if_index) 232df8bae1dSRodney W. Grimes return (ifnet_addrs[sdl->sdl_index - 1]); 233df8bae1dSRodney W. Grimes } 234df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) 235df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) { 236df8bae1dSRodney W. Grimes register char *cp, *cp2, *cp3; 237df8bae1dSRodney W. Grimes 238df8bae1dSRodney W. Grimes if (ifa->ifa_addr->sa_family != af || ifa->ifa_netmask == 0) 239df8bae1dSRodney W. Grimes next: continue; 240df8bae1dSRodney W. Grimes cp = addr_data; 241df8bae1dSRodney W. Grimes cp2 = ifa->ifa_addr->sa_data; 242df8bae1dSRodney W. Grimes cp3 = ifa->ifa_netmask->sa_data; 243df8bae1dSRodney W. Grimes cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask; 244df8bae1dSRodney W. Grimes while (cp3 < cplim) 245df8bae1dSRodney W. Grimes if ((*cp++ ^ *cp2++) & *cp3++) 246df8bae1dSRodney W. Grimes goto next; 247df8bae1dSRodney W. Grimes if (ifa_maybe == 0 || 248df8bae1dSRodney W. Grimes rn_refines((caddr_t)ifa->ifa_netmask, 249df8bae1dSRodney W. Grimes (caddr_t)ifa_maybe->ifa_netmask)) 250df8bae1dSRodney W. Grimes ifa_maybe = ifa; 251df8bae1dSRodney W. Grimes } 252df8bae1dSRodney W. Grimes return (ifa_maybe); 253df8bae1dSRodney W. Grimes } 254df8bae1dSRodney W. Grimes 255df8bae1dSRodney W. Grimes /* 256df8bae1dSRodney W. Grimes * Find an interface using a specific address family 257df8bae1dSRodney W. Grimes */ 258df8bae1dSRodney W. Grimes struct ifaddr * 259df8bae1dSRodney W. Grimes ifa_ifwithaf(af) 260df8bae1dSRodney W. Grimes register int af; 261df8bae1dSRodney W. Grimes { 262df8bae1dSRodney W. Grimes register struct ifnet *ifp; 263df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 264df8bae1dSRodney W. Grimes 265df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) 266df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) 267df8bae1dSRodney W. Grimes if (ifa->ifa_addr->sa_family == af) 268df8bae1dSRodney W. Grimes return (ifa); 269df8bae1dSRodney W. Grimes return ((struct ifaddr *)0); 270df8bae1dSRodney W. Grimes } 271df8bae1dSRodney W. Grimes 272df8bae1dSRodney W. Grimes /* 273df8bae1dSRodney W. Grimes * Find an interface address specific to an interface best matching 274df8bae1dSRodney W. Grimes * a given address. 275df8bae1dSRodney W. Grimes */ 276df8bae1dSRodney W. Grimes struct ifaddr * 277df8bae1dSRodney W. Grimes ifaof_ifpforaddr(addr, ifp) 278df8bae1dSRodney W. Grimes struct sockaddr *addr; 279df8bae1dSRodney W. Grimes register struct ifnet *ifp; 280df8bae1dSRodney W. Grimes { 281df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 282df8bae1dSRodney W. Grimes register char *cp, *cp2, *cp3; 283df8bae1dSRodney W. Grimes register char *cplim; 284df8bae1dSRodney W. Grimes struct ifaddr *ifa_maybe = 0; 285df8bae1dSRodney W. Grimes u_int af = addr->sa_family; 286df8bae1dSRodney W. Grimes 287df8bae1dSRodney W. Grimes if (af >= AF_MAX) 288df8bae1dSRodney W. Grimes return (0); 289df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) { 290df8bae1dSRodney W. Grimes if (ifa->ifa_addr->sa_family != af) 291df8bae1dSRodney W. Grimes continue; 292df8bae1dSRodney W. Grimes ifa_maybe = ifa; 293df8bae1dSRodney W. Grimes if (ifa->ifa_netmask == 0) { 294df8bae1dSRodney W. Grimes if (equal(addr, ifa->ifa_addr) || 295df8bae1dSRodney W. Grimes (ifa->ifa_dstaddr && equal(addr, ifa->ifa_dstaddr))) 296df8bae1dSRodney W. Grimes return (ifa); 297df8bae1dSRodney W. Grimes continue; 298df8bae1dSRodney W. Grimes } 299df8bae1dSRodney W. Grimes cp = addr->sa_data; 300df8bae1dSRodney W. Grimes cp2 = ifa->ifa_addr->sa_data; 301df8bae1dSRodney W. Grimes cp3 = ifa->ifa_netmask->sa_data; 302df8bae1dSRodney W. Grimes cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask; 303df8bae1dSRodney W. Grimes for (; cp3 < cplim; cp3++) 304df8bae1dSRodney W. Grimes if ((*cp++ ^ *cp2++) & *cp3) 305df8bae1dSRodney W. Grimes break; 306df8bae1dSRodney W. Grimes if (cp3 == cplim) 307df8bae1dSRodney W. Grimes return (ifa); 308df8bae1dSRodney W. Grimes } 309df8bae1dSRodney W. Grimes return (ifa_maybe); 310df8bae1dSRodney W. Grimes } 311df8bae1dSRodney W. Grimes 312df8bae1dSRodney W. Grimes #include <net/route.h> 313df8bae1dSRodney W. Grimes 314df8bae1dSRodney W. Grimes /* 315df8bae1dSRodney W. Grimes * Default action when installing a route with a Link Level gateway. 316df8bae1dSRodney W. Grimes * Lookup an appropriate real ifa to point to. 317df8bae1dSRodney W. Grimes * This should be moved to /sys/net/link.c eventually. 318df8bae1dSRodney W. Grimes */ 319df8bae1dSRodney W. Grimes void 320df8bae1dSRodney W. Grimes link_rtrequest(cmd, rt, sa) 321df8bae1dSRodney W. Grimes int cmd; 322df8bae1dSRodney W. Grimes register struct rtentry *rt; 323df8bae1dSRodney W. Grimes struct sockaddr *sa; 324df8bae1dSRodney W. Grimes { 325df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 326df8bae1dSRodney W. Grimes struct sockaddr *dst; 327df8bae1dSRodney W. Grimes struct ifnet *ifp; 328df8bae1dSRodney W. Grimes 329df8bae1dSRodney W. Grimes if (cmd != RTM_ADD || ((ifa = rt->rt_ifa) == 0) || 330df8bae1dSRodney W. Grimes ((ifp = ifa->ifa_ifp) == 0) || ((dst = rt_key(rt)) == 0)) 331df8bae1dSRodney W. Grimes return; 3329448326fSPoul-Henning Kamp ifa = ifaof_ifpforaddr(dst, ifp); 3339448326fSPoul-Henning Kamp if (ifa) { 334df8bae1dSRodney W. Grimes IFAFREE(rt->rt_ifa); 335df8bae1dSRodney W. Grimes rt->rt_ifa = ifa; 336df8bae1dSRodney W. Grimes ifa->ifa_refcnt++; 337df8bae1dSRodney W. Grimes if (ifa->ifa_rtrequest && ifa->ifa_rtrequest != link_rtrequest) 338df8bae1dSRodney W. Grimes ifa->ifa_rtrequest(cmd, rt, sa); 339df8bae1dSRodney W. Grimes } 340df8bae1dSRodney W. Grimes } 341df8bae1dSRodney W. Grimes 342df8bae1dSRodney W. Grimes /* 343df8bae1dSRodney W. Grimes * Mark an interface down and notify protocols of 344df8bae1dSRodney W. Grimes * the transition. 345df8bae1dSRodney W. Grimes * NOTE: must be called at splnet or eqivalent. 346df8bae1dSRodney W. Grimes */ 347df8bae1dSRodney W. Grimes void 348df8bae1dSRodney W. Grimes if_down(ifp) 349df8bae1dSRodney W. Grimes register struct ifnet *ifp; 350df8bae1dSRodney W. Grimes { 351df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 352df8bae1dSRodney W. Grimes 353df8bae1dSRodney W. Grimes ifp->if_flags &= ~IFF_UP; 354df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) 355df8bae1dSRodney W. Grimes pfctlinput(PRC_IFDOWN, ifa->ifa_addr); 356df8bae1dSRodney W. Grimes if_qflush(&ifp->if_snd); 357df8bae1dSRodney W. Grimes rt_ifmsg(ifp); 358df8bae1dSRodney W. Grimes } 359df8bae1dSRodney W. Grimes 360df8bae1dSRodney W. Grimes /* 361df8bae1dSRodney W. Grimes * Mark an interface up and notify protocols of 362df8bae1dSRodney W. Grimes * the transition. 363df8bae1dSRodney W. Grimes * NOTE: must be called at splnet or eqivalent. 364df8bae1dSRodney W. Grimes */ 365df8bae1dSRodney W. Grimes void 366df8bae1dSRodney W. Grimes if_up(ifp) 367df8bae1dSRodney W. Grimes register struct ifnet *ifp; 368df8bae1dSRodney W. Grimes { 369df8bae1dSRodney W. Grimes 370df8bae1dSRodney W. Grimes ifp->if_flags |= IFF_UP; 371df8bae1dSRodney W. Grimes #ifdef notyet 3729448326fSPoul-Henning Kamp register struct ifaddr *ifa; 373df8bae1dSRodney W. Grimes /* this has no effect on IP, and will kill all iso connections XXX */ 374df8bae1dSRodney W. Grimes for (ifa = ifp->if_addrlist; ifa; ifa = ifa->ifa_next) 375df8bae1dSRodney W. Grimes pfctlinput(PRC_IFUP, ifa->ifa_addr); 376df8bae1dSRodney W. Grimes #endif 377df8bae1dSRodney W. Grimes rt_ifmsg(ifp); 378df8bae1dSRodney W. Grimes } 379df8bae1dSRodney W. Grimes 380df8bae1dSRodney W. Grimes /* 381df8bae1dSRodney W. Grimes * Flush an interface queue. 382df8bae1dSRodney W. Grimes */ 383df8bae1dSRodney W. Grimes void 384df8bae1dSRodney W. Grimes if_qflush(ifq) 385df8bae1dSRodney W. Grimes register struct ifqueue *ifq; 386df8bae1dSRodney W. Grimes { 387df8bae1dSRodney W. Grimes register struct mbuf *m, *n; 388df8bae1dSRodney W. Grimes 389df8bae1dSRodney W. Grimes n = ifq->ifq_head; 3909448326fSPoul-Henning Kamp while ((m = n) != 0) { 391df8bae1dSRodney W. Grimes n = m->m_act; 392df8bae1dSRodney W. Grimes m_freem(m); 393df8bae1dSRodney W. Grimes } 394df8bae1dSRodney W. Grimes ifq->ifq_head = 0; 395df8bae1dSRodney W. Grimes ifq->ifq_tail = 0; 396df8bae1dSRodney W. Grimes ifq->ifq_len = 0; 397df8bae1dSRodney W. Grimes } 398df8bae1dSRodney W. Grimes 399df8bae1dSRodney W. Grimes /* 400df8bae1dSRodney W. Grimes * Handle interface watchdog timer routines. Called 401df8bae1dSRodney W. Grimes * from softclock, we decrement timers (if set) and 402df8bae1dSRodney W. Grimes * call the appropriate interface routine on expiration. 403df8bae1dSRodney W. Grimes */ 404df8bae1dSRodney W. Grimes void 405df8bae1dSRodney W. Grimes if_slowtimo(arg) 406df8bae1dSRodney W. Grimes void *arg; 407df8bae1dSRodney W. Grimes { 408df8bae1dSRodney W. Grimes register struct ifnet *ifp; 409df8bae1dSRodney W. Grimes int s = splimp(); 410df8bae1dSRodney W. Grimes 411df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) { 412df8bae1dSRodney W. Grimes if (ifp->if_timer == 0 || --ifp->if_timer) 413df8bae1dSRodney W. Grimes continue; 414df8bae1dSRodney W. Grimes if (ifp->if_watchdog) 415df8bae1dSRodney W. Grimes (*ifp->if_watchdog)(ifp->if_unit); 416df8bae1dSRodney W. Grimes } 417df8bae1dSRodney W. Grimes splx(s); 418df8bae1dSRodney W. Grimes timeout(if_slowtimo, (void *)0, hz / IFNET_SLOWHZ); 419df8bae1dSRodney W. Grimes } 420df8bae1dSRodney W. Grimes 421df8bae1dSRodney W. Grimes /* 422df8bae1dSRodney W. Grimes * Map interface name to 423df8bae1dSRodney W. Grimes * interface structure pointer. 424df8bae1dSRodney W. Grimes */ 425df8bae1dSRodney W. Grimes struct ifnet * 426df8bae1dSRodney W. Grimes ifunit(name) 427df8bae1dSRodney W. Grimes register char *name; 428df8bae1dSRodney W. Grimes { 429df8bae1dSRodney W. Grimes register char *cp; 430df8bae1dSRodney W. Grimes register struct ifnet *ifp; 431df8bae1dSRodney W. Grimes int unit; 432df8bae1dSRodney W. Grimes unsigned len; 433df8bae1dSRodney W. Grimes char *ep, c; 434df8bae1dSRodney W. Grimes 435df8bae1dSRodney W. Grimes for (cp = name; cp < name + IFNAMSIZ && *cp; cp++) 436df8bae1dSRodney W. Grimes if (*cp >= '0' && *cp <= '9') 437df8bae1dSRodney W. Grimes break; 438df8bae1dSRodney W. Grimes if (*cp == '\0' || cp == name + IFNAMSIZ) 439df8bae1dSRodney W. Grimes return ((struct ifnet *)0); 440df8bae1dSRodney W. Grimes /* 441df8bae1dSRodney W. Grimes * Save first char of unit, and pointer to it, 442df8bae1dSRodney W. Grimes * so we can put a null there to avoid matching 443df8bae1dSRodney W. Grimes * initial substrings of interface names. 444df8bae1dSRodney W. Grimes */ 445df8bae1dSRodney W. Grimes len = cp - name + 1; 446df8bae1dSRodney W. Grimes c = *cp; 447df8bae1dSRodney W. Grimes ep = cp; 448df8bae1dSRodney W. Grimes for (unit = 0; *cp >= '0' && *cp <= '9'; ) 449df8bae1dSRodney W. Grimes unit = unit * 10 + *cp++ - '0'; 450df8bae1dSRodney W. Grimes *ep = 0; 451df8bae1dSRodney W. Grimes for (ifp = ifnet; ifp; ifp = ifp->if_next) { 452df8bae1dSRodney W. Grimes if (bcmp(ifp->if_name, name, len)) 453df8bae1dSRodney W. Grimes continue; 454df8bae1dSRodney W. Grimes if (unit == ifp->if_unit) 455df8bae1dSRodney W. Grimes break; 456df8bae1dSRodney W. Grimes } 457df8bae1dSRodney W. Grimes *ep = c; 458df8bae1dSRodney W. Grimes return (ifp); 459df8bae1dSRodney W. Grimes } 460df8bae1dSRodney W. Grimes 461df8bae1dSRodney W. Grimes /* 462df8bae1dSRodney W. Grimes * Interface ioctls. 463df8bae1dSRodney W. Grimes */ 464df8bae1dSRodney W. Grimes int 465df8bae1dSRodney W. Grimes ifioctl(so, cmd, data, p) 466df8bae1dSRodney W. Grimes struct socket *so; 467df8bae1dSRodney W. Grimes int cmd; 468df8bae1dSRodney W. Grimes caddr_t data; 469df8bae1dSRodney W. Grimes struct proc *p; 470df8bae1dSRodney W. Grimes { 471df8bae1dSRodney W. Grimes register struct ifnet *ifp; 472df8bae1dSRodney W. Grimes register struct ifreq *ifr; 473df8bae1dSRodney W. Grimes int error; 474df8bae1dSRodney W. Grimes 475df8bae1dSRodney W. Grimes switch (cmd) { 476df8bae1dSRodney W. Grimes 477df8bae1dSRodney W. Grimes case SIOCGIFCONF: 478df8bae1dSRodney W. Grimes case OSIOCGIFCONF: 479df8bae1dSRodney W. Grimes return (ifconf(cmd, data)); 480df8bae1dSRodney W. Grimes } 481df8bae1dSRodney W. Grimes ifr = (struct ifreq *)data; 482df8bae1dSRodney W. Grimes ifp = ifunit(ifr->ifr_name); 483df8bae1dSRodney W. Grimes if (ifp == 0) 484df8bae1dSRodney W. Grimes return (ENXIO); 485df8bae1dSRodney W. Grimes switch (cmd) { 486df8bae1dSRodney W. Grimes 487df8bae1dSRodney W. Grimes case SIOCGIFFLAGS: 488df8bae1dSRodney W. Grimes ifr->ifr_flags = ifp->if_flags; 489df8bae1dSRodney W. Grimes break; 490df8bae1dSRodney W. Grimes 491df8bae1dSRodney W. Grimes case SIOCGIFMETRIC: 492df8bae1dSRodney W. Grimes ifr->ifr_metric = ifp->if_metric; 493df8bae1dSRodney W. Grimes break; 494df8bae1dSRodney W. Grimes 495a7028af7SDavid Greenman case SIOCGIFMTU: 496a7028af7SDavid Greenman ifr->ifr_mtu = ifp->if_mtu; 497a7028af7SDavid Greenman break; 498a7028af7SDavid Greenman 499074c4a4eSGarrett Wollman case SIOCGIFPHYS: 500074c4a4eSGarrett Wollman ifr->ifr_phys = ifp->if_physical; 501074c4a4eSGarrett Wollman break; 502074c4a4eSGarrett Wollman 503df8bae1dSRodney W. Grimes case SIOCSIFFLAGS: 5049448326fSPoul-Henning Kamp error = suser(p->p_ucred, &p->p_acflag); 5059448326fSPoul-Henning Kamp if (error) 506df8bae1dSRodney W. Grimes return (error); 507df8bae1dSRodney W. Grimes if (ifp->if_flags & IFF_UP && (ifr->ifr_flags & IFF_UP) == 0) { 508df8bae1dSRodney W. Grimes int s = splimp(); 509df8bae1dSRodney W. Grimes if_down(ifp); 510df8bae1dSRodney W. Grimes splx(s); 511df8bae1dSRodney W. Grimes } 512df8bae1dSRodney W. Grimes if (ifr->ifr_flags & IFF_UP && (ifp->if_flags & IFF_UP) == 0) { 513df8bae1dSRodney W. Grimes int s = splimp(); 514df8bae1dSRodney W. Grimes if_up(ifp); 515df8bae1dSRodney W. Grimes splx(s); 516df8bae1dSRodney W. Grimes } 517df8bae1dSRodney W. Grimes ifp->if_flags = (ifp->if_flags & IFF_CANTCHANGE) | 518df8bae1dSRodney W. Grimes (ifr->ifr_flags &~ IFF_CANTCHANGE); 519df8bae1dSRodney W. Grimes if (ifp->if_ioctl) 520df8bae1dSRodney W. Grimes (void) (*ifp->if_ioctl)(ifp, cmd, data); 521df8bae1dSRodney W. Grimes break; 522df8bae1dSRodney W. Grimes 523df8bae1dSRodney W. Grimes case SIOCSIFMETRIC: 5249448326fSPoul-Henning Kamp error = suser(p->p_ucred, &p->p_acflag); 5259448326fSPoul-Henning Kamp if (error) 526df8bae1dSRodney W. Grimes return (error); 527df8bae1dSRodney W. Grimes ifp->if_metric = ifr->ifr_metric; 528df8bae1dSRodney W. Grimes break; 529df8bae1dSRodney W. Grimes 530074c4a4eSGarrett Wollman case SIOCSIFPHYS: 531074c4a4eSGarrett Wollman error = suser(p->p_ucred, &p->p_acflag); 532074c4a4eSGarrett Wollman if (error) return error; 533074c4a4eSGarrett Wollman 534074c4a4eSGarrett Wollman if (!ifp->if_ioctl) return EOPNOTSUPP; 535074c4a4eSGarrett Wollman return ifp->if_ioctl(ifp, cmd, data); 536074c4a4eSGarrett Wollman 537a7028af7SDavid Greenman case SIOCSIFMTU: 5389448326fSPoul-Henning Kamp error = suser(p->p_ucred, &p->p_acflag); 5399448326fSPoul-Henning Kamp if (error) 540a7028af7SDavid Greenman return (error); 541a7028af7SDavid Greenman if (ifp->if_ioctl == NULL) 542a7028af7SDavid Greenman return (EOPNOTSUPP); 54366025569SDavid Greenman /* 54466025569SDavid Greenman * 72 was chosen below because it is the size of a TCP/IP 54566025569SDavid Greenman * header (40) + the minimum mss (32). 54666025569SDavid Greenman */ 54766025569SDavid Greenman if (ifr->ifr_mtu < 72 || ifr->ifr_mtu > 65535) 54875ee03cbSDavid Greenman return (EINVAL); 549a7028af7SDavid Greenman return ((*ifp->if_ioctl)(ifp, cmd, data)); 550a7028af7SDavid Greenman 551df8bae1dSRodney W. Grimes case SIOCADDMULTI: 552df8bae1dSRodney W. Grimes case SIOCDELMULTI: 5539448326fSPoul-Henning Kamp error = suser(p->p_ucred, &p->p_acflag); 5549448326fSPoul-Henning Kamp if (error) 555df8bae1dSRodney W. Grimes return (error); 556df8bae1dSRodney W. Grimes if (ifp->if_ioctl == NULL) 557df8bae1dSRodney W. Grimes return (EOPNOTSUPP); 558df8bae1dSRodney W. Grimes return ((*ifp->if_ioctl)(ifp, cmd, data)); 559df8bae1dSRodney W. Grimes 560df8bae1dSRodney W. Grimes default: 561df8bae1dSRodney W. Grimes if (so->so_proto == 0) 562df8bae1dSRodney W. Grimes return (EOPNOTSUPP); 563df8bae1dSRodney W. Grimes #ifndef COMPAT_43 564df8bae1dSRodney W. Grimes return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 565df8bae1dSRodney W. Grimes cmd, data, ifp)); 566df8bae1dSRodney W. Grimes #else 567df8bae1dSRodney W. Grimes { 568df8bae1dSRodney W. Grimes int ocmd = cmd; 569df8bae1dSRodney W. Grimes 570df8bae1dSRodney W. Grimes switch (cmd) { 571df8bae1dSRodney W. Grimes 572df8bae1dSRodney W. Grimes case SIOCSIFDSTADDR: 573df8bae1dSRodney W. Grimes case SIOCSIFADDR: 574df8bae1dSRodney W. Grimes case SIOCSIFBRDADDR: 575df8bae1dSRodney W. Grimes case SIOCSIFNETMASK: 576df8bae1dSRodney W. Grimes #if BYTE_ORDER != BIG_ENDIAN 577df8bae1dSRodney W. Grimes if (ifr->ifr_addr.sa_family == 0 && 578df8bae1dSRodney W. Grimes ifr->ifr_addr.sa_len < 16) { 579df8bae1dSRodney W. Grimes ifr->ifr_addr.sa_family = ifr->ifr_addr.sa_len; 580df8bae1dSRodney W. Grimes ifr->ifr_addr.sa_len = 16; 581df8bae1dSRodney W. Grimes } 582df8bae1dSRodney W. Grimes #else 583df8bae1dSRodney W. Grimes if (ifr->ifr_addr.sa_len == 0) 584df8bae1dSRodney W. Grimes ifr->ifr_addr.sa_len = 16; 585df8bae1dSRodney W. Grimes #endif 586df8bae1dSRodney W. Grimes break; 587df8bae1dSRodney W. Grimes 588df8bae1dSRodney W. Grimes case OSIOCGIFADDR: 589df8bae1dSRodney W. Grimes cmd = SIOCGIFADDR; 590df8bae1dSRodney W. Grimes break; 591df8bae1dSRodney W. Grimes 592df8bae1dSRodney W. Grimes case OSIOCGIFDSTADDR: 593df8bae1dSRodney W. Grimes cmd = SIOCGIFDSTADDR; 594df8bae1dSRodney W. Grimes break; 595df8bae1dSRodney W. Grimes 596df8bae1dSRodney W. Grimes case OSIOCGIFBRDADDR: 597df8bae1dSRodney W. Grimes cmd = SIOCGIFBRDADDR; 598df8bae1dSRodney W. Grimes break; 599df8bae1dSRodney W. Grimes 600df8bae1dSRodney W. Grimes case OSIOCGIFNETMASK: 601df8bae1dSRodney W. Grimes cmd = SIOCGIFNETMASK; 602df8bae1dSRodney W. Grimes } 603df8bae1dSRodney W. Grimes error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 604df8bae1dSRodney W. Grimes cmd, data, ifp)); 605df8bae1dSRodney W. Grimes switch (ocmd) { 606df8bae1dSRodney W. Grimes 607df8bae1dSRodney W. Grimes case OSIOCGIFADDR: 608df8bae1dSRodney W. Grimes case OSIOCGIFDSTADDR: 609df8bae1dSRodney W. Grimes case OSIOCGIFBRDADDR: 610df8bae1dSRodney W. Grimes case OSIOCGIFNETMASK: 611df8bae1dSRodney W. Grimes *(u_short *)&ifr->ifr_addr = ifr->ifr_addr.sa_family; 612df8bae1dSRodney W. Grimes } 613df8bae1dSRodney W. Grimes return (error); 614df8bae1dSRodney W. Grimes 615df8bae1dSRodney W. Grimes } 616df8bae1dSRodney W. Grimes #endif 617df8bae1dSRodney W. Grimes } 618df8bae1dSRodney W. Grimes return (0); 619df8bae1dSRodney W. Grimes } 620df8bae1dSRodney W. Grimes 621df8bae1dSRodney W. Grimes /* 622df8bae1dSRodney W. Grimes * Return interface configuration 623df8bae1dSRodney W. Grimes * of system. List may be used 624df8bae1dSRodney W. Grimes * in later ioctl's (above) to get 625df8bae1dSRodney W. Grimes * other information. 626df8bae1dSRodney W. Grimes */ 627df8bae1dSRodney W. Grimes /*ARGSUSED*/ 628df8bae1dSRodney W. Grimes int 629df8bae1dSRodney W. Grimes ifconf(cmd, data) 630df8bae1dSRodney W. Grimes int cmd; 631df8bae1dSRodney W. Grimes caddr_t data; 632df8bae1dSRodney W. Grimes { 633df8bae1dSRodney W. Grimes register struct ifconf *ifc = (struct ifconf *)data; 634df8bae1dSRodney W. Grimes register struct ifnet *ifp = ifnet; 635df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 636df8bae1dSRodney W. Grimes struct ifreq ifr, *ifrp; 637df8bae1dSRodney W. Grimes int space = ifc->ifc_len, error = 0; 638df8bae1dSRodney W. Grimes 639df8bae1dSRodney W. Grimes ifrp = ifc->ifc_req; 640df8bae1dSRodney W. Grimes for (; space > sizeof (ifr) && ifp; ifp = ifp->if_next) { 6412624cf89SGarrett Wollman char workbuf[12], *unitname; 6422624cf89SGarrett Wollman int unitlen, ifnlen; 6432624cf89SGarrett Wollman 6442624cf89SGarrett Wollman unitname = sprint_d(ifp->if_unit, workbuf, sizeof workbuf); 6452624cf89SGarrett Wollman unitlen = strlen(unitname); 6462624cf89SGarrett Wollman ifnlen = strlen(ifp->if_name); 6472624cf89SGarrett Wollman if(unitlen + ifnlen + 1 > sizeof ifr.ifr_name) { 6482624cf89SGarrett Wollman error = ENAMETOOLONG; 6492624cf89SGarrett Wollman } else { 6502624cf89SGarrett Wollman strcpy(ifr.ifr_name, ifp->if_name); 6512624cf89SGarrett Wollman strcpy(&ifr.ifr_name[ifnlen], unitname); 6522624cf89SGarrett Wollman } 6532624cf89SGarrett Wollman 654df8bae1dSRodney W. Grimes if ((ifa = ifp->if_addrlist) == 0) { 655df8bae1dSRodney W. Grimes bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); 656df8bae1dSRodney W. Grimes error = copyout((caddr_t)&ifr, (caddr_t)ifrp, 657df8bae1dSRodney W. Grimes sizeof (ifr)); 658df8bae1dSRodney W. Grimes if (error) 659df8bae1dSRodney W. Grimes break; 660df8bae1dSRodney W. Grimes space -= sizeof (ifr), ifrp++; 661df8bae1dSRodney W. Grimes } else 662df8bae1dSRodney W. Grimes for ( ; space > sizeof (ifr) && ifa; ifa = ifa->ifa_next) { 663df8bae1dSRodney W. Grimes register struct sockaddr *sa = ifa->ifa_addr; 664df8bae1dSRodney W. Grimes #ifdef COMPAT_43 665df8bae1dSRodney W. Grimes if (cmd == OSIOCGIFCONF) { 666df8bae1dSRodney W. Grimes struct osockaddr *osa = 667df8bae1dSRodney W. Grimes (struct osockaddr *)&ifr.ifr_addr; 668df8bae1dSRodney W. Grimes ifr.ifr_addr = *sa; 669df8bae1dSRodney W. Grimes osa->sa_family = sa->sa_family; 670df8bae1dSRodney W. Grimes error = copyout((caddr_t)&ifr, (caddr_t)ifrp, 671df8bae1dSRodney W. Grimes sizeof (ifr)); 672df8bae1dSRodney W. Grimes ifrp++; 673df8bae1dSRodney W. Grimes } else 674df8bae1dSRodney W. Grimes #endif 675df8bae1dSRodney W. Grimes if (sa->sa_len <= sizeof(*sa)) { 676df8bae1dSRodney W. Grimes ifr.ifr_addr = *sa; 677df8bae1dSRodney W. Grimes error = copyout((caddr_t)&ifr, (caddr_t)ifrp, 678df8bae1dSRodney W. Grimes sizeof (ifr)); 679df8bae1dSRodney W. Grimes ifrp++; 680df8bae1dSRodney W. Grimes } else { 681df8bae1dSRodney W. Grimes space -= sa->sa_len - sizeof(*sa); 682df8bae1dSRodney W. Grimes if (space < sizeof (ifr)) 683df8bae1dSRodney W. Grimes break; 684df8bae1dSRodney W. Grimes error = copyout((caddr_t)&ifr, (caddr_t)ifrp, 685df8bae1dSRodney W. Grimes sizeof (ifr.ifr_name)); 686df8bae1dSRodney W. Grimes if (error == 0) 687df8bae1dSRodney W. Grimes error = copyout((caddr_t)sa, 688df8bae1dSRodney W. Grimes (caddr_t)&ifrp->ifr_addr, sa->sa_len); 689df8bae1dSRodney W. Grimes ifrp = (struct ifreq *) 690df8bae1dSRodney W. Grimes (sa->sa_len + (caddr_t)&ifrp->ifr_addr); 691df8bae1dSRodney W. Grimes } 692df8bae1dSRodney W. Grimes if (error) 693df8bae1dSRodney W. Grimes break; 694df8bae1dSRodney W. Grimes space -= sizeof (ifr); 695df8bae1dSRodney W. Grimes } 696df8bae1dSRodney W. Grimes } 697df8bae1dSRodney W. Grimes ifc->ifc_len -= space; 698df8bae1dSRodney W. Grimes return (error); 699df8bae1dSRodney W. Grimes } 700df8bae1dSRodney W. Grimes 701df8bae1dSRodney W. Grimes static char * 702df8bae1dSRodney W. Grimes sprint_d(n, buf, buflen) 703df8bae1dSRodney W. Grimes u_int n; 704df8bae1dSRodney W. Grimes char *buf; 705df8bae1dSRodney W. Grimes int buflen; 706df8bae1dSRodney W. Grimes { 707df8bae1dSRodney W. Grimes register char *cp = buf + buflen - 1; 708df8bae1dSRodney W. Grimes 709df8bae1dSRodney W. Grimes *cp = 0; 710df8bae1dSRodney W. Grimes do { 711df8bae1dSRodney W. Grimes cp--; 712df8bae1dSRodney W. Grimes *cp = "0123456789"[n % 10]; 713df8bae1dSRodney W. Grimes n /= 10; 714df8bae1dSRodney W. Grimes } while (n != 0); 715df8bae1dSRodney W. Grimes return (cp); 716df8bae1dSRodney W. Grimes } 717