if_ef.c revision 132778
154558Sbp/*- 266479Sbp * Copyright (c) 1999, 2000 Boris Popov 354558Sbp * All rights reserved. 454558Sbp * 554558Sbp * Redistribution and use in source and binary forms, with or without 654558Sbp * modification, are permitted provided that the following conditions 754558Sbp * are met: 854558Sbp * 1. Redistributions of source code must retain the above copyright 954558Sbp * notice, this list of conditions and the following disclaimer. 1054558Sbp * 2. Redistributions in binary form must reproduce the above copyright 1154558Sbp * notice, this list of conditions and the following disclaimer in the 1254558Sbp * documentation and/or other materials provided with the distribution. 1354558Sbp * 1454558Sbp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1554558Sbp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1654558Sbp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1754558Sbp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1854558Sbp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1954558Sbp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2054558Sbp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2154558Sbp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2254558Sbp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2354558Sbp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2454558Sbp * SUCH DAMAGE. 2554558Sbp * 2654558Sbp * $FreeBSD: head/sys/net/if_ef.c 132778 2004-07-28 06:48:36Z kan $ 2754558Sbp */ 2854558Sbp 2954558Sbp#include "opt_inet.h" 3054558Sbp#include "opt_ipx.h" 3156424Sbp#include "opt_ef.h" 3254558Sbp 3354558Sbp#include <sys/param.h> 3454558Sbp#include <sys/systm.h> 3554558Sbp#include <sys/sockio.h> 3654558Sbp#include <sys/malloc.h> 3754558Sbp#include <sys/mbuf.h> 3854558Sbp#include <sys/socket.h> 3954558Sbp#include <sys/syslog.h> 4054558Sbp#include <sys/kernel.h> 4154558Sbp#include <sys/module.h> 4254558Sbp 4354558Sbp#include <net/ethernet.h> 4454558Sbp#include <net/if_llc.h> 4554558Sbp#include <net/if.h> 4654558Sbp#include <net/if_arp.h> 4754558Sbp#include <net/if_dl.h> 4854558Sbp#include <net/if_types.h> 4954558Sbp#include <net/netisr.h> 5054558Sbp#include <net/route.h> 5154558Sbp#include <net/bpf.h> 5254558Sbp 5354558Sbp#ifdef INET 5454558Sbp#include <netinet/in.h> 5554558Sbp#include <netinet/in_var.h> 5654558Sbp#include <netinet/if_ether.h> 5754558Sbp#endif 5854558Sbp 5954558Sbp#ifdef IPX 6054558Sbp#include <netipx/ipx.h> 6154558Sbp#include <netipx/ipx_if.h> 6254558Sbp#endif 6354558Sbp 6454558Sbp/* internal frame types */ 6554558Sbp#define ETHER_FT_EII 0 /* Ethernet_II - default */ 6654558Sbp#define ETHER_FT_8023 1 /* 802.3 (Novell) */ 6754558Sbp#define ETHER_FT_8022 2 /* 802.2 */ 6854558Sbp#define ETHER_FT_SNAP 3 /* SNAP */ 6954558Sbp#define EF_NFT 4 /* total number of frame types */ 7054558Sbp 7154558Sbp#ifdef EF_DEBUG 7287599Sobrien#define EFDEBUG(format, args...) printf("%s: "format, __func__ ,## args) 7354558Sbp#else 7454558Sbp#define EFDEBUG(format, args...) 7554558Sbp#endif 7654558Sbp 7787599Sobrien#define EFERROR(format, args...) printf("%s: "format, __func__ ,## args) 7854558Sbp 7954558Sbpstruct efnet { 8054558Sbp struct arpcom ef_ac; 8154558Sbp struct ifnet * ef_ifp; 82121816Sbrooks int ef_frametype; 8354558Sbp}; 8454558Sbp 8554558Sbpstruct ef_link { 8660938Sjake SLIST_ENTRY(ef_link) el_next; 8754558Sbp struct ifnet *el_ifp; /* raw device for this clones */ 8854558Sbp struct efnet *el_units[EF_NFT]; /* our clones */ 8954558Sbp}; 9054558Sbp 9160938Sjakestatic SLIST_HEAD(ef_link_head, ef_link) efdev = {NULL}; 9254558Sbpstatic int efcount; 9354558Sbp 9454558Sbpextern int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 9559681Sbpextern int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 9666479Sbp struct sockaddr *dst, short *tp, int *hlen); 9754558Sbp 9854558Sbp/* 9954558Sbpstatic void ef_reset (struct ifnet *); 10054558Sbp*/ 10154558Sbpstatic int ef_attach(struct efnet *sc); 10254558Sbpstatic int ef_detach(struct efnet *sc); 10354558Sbpstatic void ef_init(void *); 10454558Sbpstatic int ef_ioctl(struct ifnet *, u_long, caddr_t); 10554558Sbpstatic void ef_start(struct ifnet *); 10654558Sbpstatic int ef_input(struct ifnet*, struct ether_header *, struct mbuf *); 10759681Sbpstatic int ef_output(struct ifnet *ifp, struct mbuf **mp, 10866479Sbp struct sockaddr *dst, short *tp, int *hlen); 10954558Sbp 11054558Sbpstatic int ef_load(void); 11154558Sbpstatic int ef_unload(void); 11254558Sbp 11354558Sbp/* 11454558Sbp * Install the interface, most of structure initialization done in ef_clone() 11554558Sbp */ 11654558Sbpstatic int 11754558Sbpef_attach(struct efnet *sc) 11854558Sbp{ 11954558Sbp struct ifnet *ifp = (struct ifnet*)&sc->ef_ac.ac_if; 120106939Ssam struct ifaddr *ifa2; 121106939Ssam struct sockaddr_dl *sdl2; 12254558Sbp 12354558Sbp ifp->if_start = ef_start; 12454558Sbp ifp->if_watchdog = NULL; 12554558Sbp ifp->if_init = ef_init; 12654558Sbp ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 12754558Sbp ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 12854558Sbp /* 12954558Sbp * Attach the interface 13054558Sbp */ 131106939Ssam ifa2 = ifaddr_byindex(sc->ef_ifp->if_index); 132106939Ssam sdl2 = (struct sockaddr_dl *)ifa2->ifa_addr; 133106939Ssam ether_ifattach(ifp, LLADDR(sdl2)); 13454558Sbp 13554558Sbp ifp->if_resolvemulti = 0; 13654558Sbp ifp->if_type = IFT_XETHER; 13754558Sbp ifp->if_flags |= IFF_RUNNING; 13854558Sbp 13954558Sbp bcopy(LLADDR(sdl2), sc->ef_ac.ac_enaddr, ETHER_ADDR_LEN); 14054558Sbp 141121816Sbrooks EFDEBUG("%s: attached\n", ifp->if_xname); 14254558Sbp return 1; 14354558Sbp} 14454558Sbp 14554558Sbp/* 14654558Sbp * This is for _testing_only_, just removes interface from interfaces list 14754558Sbp */ 14854558Sbpstatic int 14954558Sbpef_detach(struct efnet *sc) 15054558Sbp{ 15154558Sbp struct ifnet *ifp = (struct ifnet*)&sc->ef_ac.ac_if; 15254558Sbp int s; 15354558Sbp 15454558Sbp s = splimp(); 15554558Sbp 15654558Sbp if (ifp->if_flags & IFF_UP) { 15754558Sbp if_down(ifp); 15854558Sbp if (ifp->if_flags & IFF_RUNNING) { 15954558Sbp /* find internet addresses and delete routes */ 16054558Sbp register struct ifaddr *ifa; 16172012Sphk TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 16254558Sbp rtinit(ifa, (int)RTM_DELETE, 0); 16354558Sbp } 16454558Sbp } 16554558Sbp } 166108172Shsu IFNET_WLOCK(); 16754558Sbp TAILQ_REMOVE(&ifnet, ifp, if_link); 168108172Shsu IFNET_WUNLOCK(); 16954558Sbp splx(s); 17054558Sbp return 0; 17154558Sbp} 17254558Sbp 17354558Sbpstatic void 17454558Sbpef_init(void *foo) { 17554558Sbp return; 17654558Sbp} 17754558Sbp 17854558Sbpstatic int 17954558Sbpef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 18054558Sbp{ 181121816Sbrooks struct efnet *sc = ifp->if_softc; 18254558Sbp struct ifaddr *ifa = (struct ifaddr*)data; 18354558Sbp int s, error; 18454558Sbp 185121816Sbrooks EFDEBUG("IOCTL %ld for %s\n", cmd, ifp->if_xname); 18654558Sbp error = 0; 18754558Sbp s = splimp(); 18854558Sbp switch (cmd) { 189106939Ssam case SIOCSIFFLAGS: 190106939Ssam error = 0; 191106939Ssam break; 19254558Sbp case SIOCSIFADDR: 193121816Sbrooks if (sc->ef_frametype == ETHER_FT_8023 && 19454558Sbp ifa->ifa_addr->sa_family != AF_IPX) { 19554558Sbp error = EAFNOSUPPORT; 19654558Sbp break; 19754558Sbp } 19854558Sbp ifp->if_flags |= IFF_UP; 19954558Sbp /* FALL THROUGH */ 200106939Ssam default: 20154558Sbp error = ether_ioctl(ifp, cmd, data); 20254558Sbp break; 20354558Sbp } 20454558Sbp splx(s); 20554558Sbp return error; 20654558Sbp} 20754558Sbp 20854558Sbp/* 20954558Sbp * Currently packet prepared in the ether_output(), but this can be a better 21054558Sbp * place. 21154558Sbp */ 21254558Sbpstatic void 21354558Sbpef_start(struct ifnet *ifp) 21454558Sbp{ 21554558Sbp struct efnet *sc = (struct efnet*)ifp->if_softc; 21654558Sbp struct ifnet *p; 21754558Sbp struct mbuf *m; 218130549Smlaier int error; 21954558Sbp 22054558Sbp ifp->if_flags |= IFF_OACTIVE; 22154558Sbp p = sc->ef_ifp; 22254558Sbp 22354558Sbp EFDEBUG("\n"); 22454558Sbp for (;;) { 22554558Sbp IF_DEQUEUE(&ifp->if_snd, m); 22654558Sbp if (m == 0) 22754558Sbp break; 228106939Ssam BPF_MTAP(ifp, m); 229130549Smlaier IFQ_HANDOFF(p, m, error); 230130549Smlaier if (error) { 23159681Sbp ifp->if_oerrors++; 23259681Sbp continue; 23354558Sbp } 23469152Sjlemon ifp->if_opackets++; 23554558Sbp } 23654558Sbp ifp->if_flags &= ~IFF_OACTIVE; 23754558Sbp return; 23854558Sbp} 23954558Sbp 24054558Sbp/* 24154558Sbp * Inline functions do not put additional overhead to procedure call or 24254558Sbp * parameter passing but simplify the code 24354558Sbp */ 24454558Sbpstatic int __inline 245111888Sjlemonef_inputEII(struct mbuf *m, struct ether_header *eh, u_short ether_type) 24654558Sbp{ 247111888Sjlemon int isr; 248111888Sjlemon 24954558Sbp switch(ether_type) { 25054558Sbp#ifdef IPX 251111888Sjlemon case ETHERTYPE_IPX: 252111888Sjlemon isr = NETISR_IPX; 25354558Sbp break; 25454558Sbp#endif 25554558Sbp#ifdef INET 256111888Sjlemon case ETHERTYPE_IP: 257122702Sandre if (ip_fastforward(m)) 258111888Sjlemon return (0); 259111888Sjlemon isr = NETISR_IP; 26054558Sbp break; 26154558Sbp 262111888Sjlemon case ETHERTYPE_ARP: 263111888Sjlemon isr = NETISR_ARP; 26454558Sbp break; 26554558Sbp#endif 266111888Sjlemon default: 267111888Sjlemon return (EPROTONOSUPPORT); 26854558Sbp } 269111888Sjlemon netisr_dispatch(isr, m); 270111888Sjlemon return (0); 27154558Sbp} 27254558Sbp 27354558Sbpstatic int __inline 27454558Sbpef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l, 275111888Sjlemon u_short ether_type) 27654558Sbp{ 277111888Sjlemon int isr; 278111888Sjlemon 27954558Sbp switch(ether_type) { 28054558Sbp#ifdef IPX 281111888Sjlemon case ETHERTYPE_IPX: 28254558Sbp m_adj(m, 8); 283111888Sjlemon isr = NETISR_IPX; 28454558Sbp break; 28554558Sbp#endif 286111888Sjlemon default: 287111888Sjlemon return (EPROTONOSUPPORT); 28854558Sbp } 289111888Sjlemon netisr_dispatch(isr, m); 290111888Sjlemon return (0); 29154558Sbp} 29254558Sbp 29354558Sbpstatic int __inline 29454558Sbpef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l, 295111888Sjlemon u_short ether_type) 29654558Sbp{ 297111888Sjlemon int isr; 298111888Sjlemon 29954558Sbp switch(ether_type) { 30054558Sbp#ifdef IPX 301111888Sjlemon case 0xe0: 30254558Sbp m_adj(m, 3); 303111888Sjlemon isr = NETISR_IPX; 30454558Sbp break; 30554558Sbp#endif 306111888Sjlemon default: 307111888Sjlemon return (EPROTONOSUPPORT); 30854558Sbp } 309111888Sjlemon netisr_dispatch(isr, m); 310111888Sjlemon return (0); 31154558Sbp} 312111888Sjlemon 31354558Sbp/* 31454558Sbp * Called from ether_input() 31554558Sbp */ 31654558Sbpstatic int 31754558Sbpef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m) 31854558Sbp{ 31954558Sbp u_short ether_type; 32071891Sbp int ft = -1; 32154558Sbp struct efnet *efp; 32254558Sbp struct ifnet *eifp; 32354558Sbp struct llc *l; 32454558Sbp struct ef_link *efl; 325111888Sjlemon int isr; 32654558Sbp 32754558Sbp ether_type = ntohs(eh->ether_type); 328132778Skan l = NULL; 32954558Sbp if (ether_type < ETHERMTU) { 33054558Sbp l = mtod(m, struct llc*); 33154558Sbp if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) { 33254558Sbp /* 33354558Sbp * Novell's "802.3" frame 33454558Sbp */ 33554558Sbp ft = ETHER_FT_8023; 33654558Sbp } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) { 33754558Sbp /* 33854558Sbp * 802.2/SNAP 33954558Sbp */ 34054558Sbp ft = ETHER_FT_SNAP; 34154558Sbp ether_type = ntohs(l->llc_un.type_snap.ether_type); 34254558Sbp } else if (l->llc_dsap == l->llc_ssap) { 34354558Sbp /* 34454558Sbp * 802.3/802.2 34554558Sbp */ 34654558Sbp ft = ETHER_FT_8022; 34754558Sbp ether_type = l->llc_ssap; 34854558Sbp } 34954558Sbp } else 35054558Sbp ft = ETHER_FT_EII; 35154558Sbp 35254558Sbp if (ft == -1) { 35354558Sbp EFDEBUG("Unrecognised ether_type %x\n", ether_type); 35459681Sbp return EPROTONOSUPPORT; 35554558Sbp } 35654558Sbp 35754558Sbp /* 35854558Sbp * Check if interface configured for the given frame 35954558Sbp */ 36054558Sbp efp = NULL; 36154558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 36254558Sbp if (efl->el_ifp == ifp) { 36354558Sbp efp = efl->el_units[ft]; 36454558Sbp break; 36554558Sbp } 36654558Sbp } 36754558Sbp if (efp == NULL) { 36854558Sbp EFDEBUG("Can't find if for %d\n", ft); 36959681Sbp return EPROTONOSUPPORT; 37054558Sbp } 37154558Sbp eifp = &efp->ef_ac.ac_if; 37254558Sbp if ((eifp->if_flags & IFF_UP) == 0) 37359681Sbp return EPROTONOSUPPORT; 37454558Sbp eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh); 37554558Sbp m->m_pkthdr.rcvif = eifp; 37654558Sbp 377123922Ssam BPF_MTAP2(eifp, eh, ETHER_HDR_LEN, m); 37854558Sbp /* 37954558Sbp * Now we ready to adjust mbufs and pass them to protocol intr's 38054558Sbp */ 38154558Sbp switch(ft) { 382111888Sjlemon case ETHER_FT_EII: 383111888Sjlemon return (ef_inputEII(m, eh, ether_type)); 38454558Sbp#ifdef IPX 385111888Sjlemon case ETHER_FT_8023: /* only IPX can be here */ 386111888Sjlemon isr = NETISR_IPX; 38754558Sbp break; 38854558Sbp#endif 389111888Sjlemon case ETHER_FT_SNAP: 390111888Sjlemon return (ef_inputSNAP(m, eh, l, ether_type)); 391111888Sjlemon case ETHER_FT_8022: 392111888Sjlemon return (ef_input8022(m, eh, l, ether_type)); 393111888Sjlemon default: 39454558Sbp EFDEBUG("No support for frame %d and proto %04x\n", 39554558Sbp ft, ether_type); 396111888Sjlemon return (EPROTONOSUPPORT); 39754558Sbp } 398111888Sjlemon netisr_dispatch(isr, m); 399111888Sjlemon return (0); 40054558Sbp} 40154558Sbp 40254558Sbpstatic int 40366479Sbpef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp, 40466479Sbp int *hlen) 40554558Sbp{ 406121816Sbrooks struct efnet *sc = (struct efnet*)ifp->if_softc; 40759681Sbp struct mbuf *m = *mp; 40854558Sbp u_char *cp; 40954558Sbp short type; 41054558Sbp 41154558Sbp if (ifp->if_type != IFT_XETHER) 41259681Sbp return ENETDOWN; 413121816Sbrooks switch (sc->ef_frametype) { 41454558Sbp case ETHER_FT_EII: 41554558Sbp#ifdef IPX 41654558Sbp type = htons(ETHERTYPE_IPX); 41754558Sbp#else 41859681Sbp return EPFNOSUPPORT; 41954558Sbp#endif 42054558Sbp break; 42154558Sbp case ETHER_FT_8023: 42254558Sbp type = htons(m->m_pkthdr.len); 42354558Sbp break; 42454558Sbp case ETHER_FT_8022: 425111119Simp M_PREPEND(m, ETHER_HDR_LEN + 3, M_TRYWAIT); 42659681Sbp if (m == NULL) { 42759681Sbp *mp = NULL; 42859681Sbp return ENOBUFS; 42959681Sbp } 43059681Sbp /* 43159681Sbp * Ensure that ethernet header and next three bytes 43259681Sbp * will fit into single mbuf 43359681Sbp */ 43459681Sbp m = m_pullup(m, ETHER_HDR_LEN + 3); 43559681Sbp if (m == NULL) { 43659681Sbp *mp = NULL; 43759681Sbp return ENOBUFS; 43859681Sbp } 43959681Sbp m_adj(m, ETHER_HDR_LEN); 44054558Sbp type = htons(m->m_pkthdr.len); 44154558Sbp cp = mtod(m, u_char *); 44254558Sbp *cp++ = 0xE0; 44354558Sbp *cp++ = 0xE0; 44454558Sbp *cp++ = 0x03; 44566479Sbp *hlen += 3; 44654558Sbp break; 44754558Sbp case ETHER_FT_SNAP: 448111119Simp M_PREPEND(m, 8, M_TRYWAIT); 44959681Sbp if (m == NULL) { 45059681Sbp *mp = NULL; 45159681Sbp return ENOBUFS; 45259681Sbp } 45354558Sbp type = htons(m->m_pkthdr.len); 45454558Sbp cp = mtod(m, u_char *); 45554558Sbp bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8); 45666479Sbp *hlen += 8; 45754558Sbp break; 45854558Sbp default: 45959681Sbp return EPFNOSUPPORT; 46054558Sbp } 46159681Sbp *mp = m; 46254558Sbp *tp = type; 46354558Sbp return 0; 46454558Sbp} 46554558Sbp 46654558Sbp/* 46754558Sbp * Create clone from the given interface 46854558Sbp */ 46954558Sbpstatic int 47054558Sbpef_clone(struct ef_link *efl, int ft) 47154558Sbp{ 47254558Sbp struct efnet *efp; 47354558Sbp struct ifnet *eifp; 47454558Sbp struct ifnet *ifp = efl->el_ifp; 47554558Sbp 47669781Sdwmalone efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR, 477111119Simp M_WAITOK | M_ZERO); 47854558Sbp if (efp == NULL) 47954558Sbp return ENOMEM; 48054558Sbp efp->ef_ifp = ifp; 481121816Sbrooks efp->ef_frametype = ft; 48254558Sbp eifp = &efp->ef_ac.ac_if; 483121816Sbrooks snprintf(eifp->if_xname, IFNAMSIZ, 484121816Sbrooks "%sf%d", ifp->if_xname, efp->ef_frametype); 485121816Sbrooks eifp->if_dname = "ef"; 486121816Sbrooks eifp->if_dunit = IF_DUNIT_NONE; 48754558Sbp eifp->if_softc = efp; 48854558Sbp if (ifp->if_ioctl) 48954558Sbp eifp->if_ioctl = ef_ioctl; 49054558Sbp efl->el_units[ft] = efp; 49154558Sbp return 0; 49254558Sbp} 49354558Sbp 49454558Sbpstatic int 49554558Sbpef_load(void) 49654558Sbp{ 49754558Sbp struct ifnet *ifp; 49854558Sbp struct efnet *efp; 49954558Sbp struct ef_link *efl = NULL; 50054558Sbp int error = 0, d; 50154558Sbp 502108172Shsu IFNET_RLOCK(); 50371999Sphk TAILQ_FOREACH(ifp, &ifnet, if_link) { 50454558Sbp if (ifp->if_type != IFT_ETHER) continue; 505121816Sbrooks EFDEBUG("Found interface %s\n", ifp->if_xname); 50654558Sbp efl = (struct ef_link*)malloc(sizeof(struct ef_link), 507111119Simp M_IFADDR, M_WAITOK | M_ZERO); 50854558Sbp if (efl == NULL) { 50954558Sbp error = ENOMEM; 51054558Sbp break; 51154558Sbp } 51254558Sbp 51354558Sbp efl->el_ifp = ifp; 51454558Sbp#ifdef ETHER_II 51554558Sbp error = ef_clone(efl, ETHER_FT_EII); 51654558Sbp if (error) break; 51754558Sbp#endif 51854558Sbp#ifdef ETHER_8023 51954558Sbp error = ef_clone(efl, ETHER_FT_8023); 52054558Sbp if (error) break; 52154558Sbp#endif 52254558Sbp#ifdef ETHER_8022 52354558Sbp error = ef_clone(efl, ETHER_FT_8022); 52454558Sbp if (error) break; 52554558Sbp#endif 52654558Sbp#ifdef ETHER_SNAP 52754558Sbp error = ef_clone(efl, ETHER_FT_SNAP); 52854558Sbp if (error) break; 52954558Sbp#endif 53054558Sbp efcount++; 53154558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 53254558Sbp } 533108172Shsu IFNET_RUNLOCK(); 53454558Sbp if (error) { 53554558Sbp if (efl) 53654558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 53754558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 53854558Sbp for (d = 0; d < EF_NFT; d++) 53954558Sbp if (efl->el_units[d]) 54054558Sbp free(efl->el_units[d], M_IFADDR); 54154558Sbp free(efl, M_IFADDR); 54254558Sbp } 54354558Sbp return error; 54454558Sbp } 54554558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 54654558Sbp for (d = 0; d < EF_NFT; d++) { 54754558Sbp efp = efl->el_units[d]; 54854558Sbp if (efp) 54954558Sbp ef_attach(efp); 55054558Sbp } 55154558Sbp } 55254558Sbp ef_inputp = ef_input; 55354558Sbp ef_outputp = ef_output; 55454558Sbp EFDEBUG("Loaded\n"); 55554558Sbp return 0; 55654558Sbp} 55754558Sbp 55854558Sbpstatic int 55954558Sbpef_unload(void) 56054558Sbp{ 56154558Sbp struct efnet *efp; 56254558Sbp struct ef_link *efl; 56354558Sbp int d; 56454558Sbp 56554558Sbp ef_inputp = NULL; 56654558Sbp ef_outputp = NULL; 56754558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 56854558Sbp for (d = 0; d < EF_NFT; d++) { 56954558Sbp efp = efl->el_units[d]; 57054558Sbp if (efp) { 57154558Sbp ef_detach(efp); 57254558Sbp } 57354558Sbp } 57454558Sbp } 57554558Sbp EFDEBUG("Unloaded\n"); 57654558Sbp return 0; 57754558Sbp} 57854558Sbp 57954558Sbpstatic int 58054558Sbpif_ef_modevent(module_t mod, int type, void *data) 58154558Sbp{ 58254558Sbp switch ((modeventtype_t)type) { 58354558Sbp case MOD_LOAD: 58454558Sbp return ef_load(); 58554558Sbp case MOD_UNLOAD: 58654558Sbp return ef_unload(); 58754558Sbp default: 588132199Sphk return EOPNOTSUPP; 58954558Sbp } 59054558Sbp return 0; 59154558Sbp} 59254558Sbp 59354558Sbpstatic moduledata_t if_ef_mod = { 59454558Sbp "if_ef", if_ef_modevent, NULL 59554558Sbp}; 59654558Sbp 59754558SbpDECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE); 598