if_ef.c revision 106939
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 106939 2002-11-15 00:00:15Z sam $ 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; 8254558Sbp}; 8354558Sbp 8454558Sbpstruct ef_link { 8560938Sjake SLIST_ENTRY(ef_link) el_next; 8654558Sbp struct ifnet *el_ifp; /* raw device for this clones */ 8754558Sbp struct efnet *el_units[EF_NFT]; /* our clones */ 8854558Sbp}; 8954558Sbp 9060938Sjakestatic SLIST_HEAD(ef_link_head, ef_link) efdev = {NULL}; 9154558Sbpstatic int efcount; 9254558Sbp 9354558Sbpextern int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 9459681Sbpextern int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 9566479Sbp struct sockaddr *dst, short *tp, int *hlen); 9654558Sbp 9754558Sbp/* 9854558Sbpstatic void ef_reset (struct ifnet *); 9954558Sbp*/ 10054558Sbpstatic int ef_attach(struct efnet *sc); 10154558Sbpstatic int ef_detach(struct efnet *sc); 10254558Sbpstatic void ef_init(void *); 10354558Sbpstatic int ef_ioctl(struct ifnet *, u_long, caddr_t); 10454558Sbpstatic void ef_start(struct ifnet *); 10554558Sbpstatic int ef_input(struct ifnet*, struct ether_header *, struct mbuf *); 10659681Sbpstatic int ef_output(struct ifnet *ifp, struct mbuf **mp, 10766479Sbp struct sockaddr *dst, short *tp, int *hlen); 10854558Sbp 10954558Sbpstatic int ef_load(void); 11054558Sbpstatic int ef_unload(void); 11154558Sbp 11254558Sbp/* 11354558Sbp * Install the interface, most of structure initialization done in ef_clone() 11454558Sbp */ 11554558Sbpstatic int 11654558Sbpef_attach(struct efnet *sc) 11754558Sbp{ 11854558Sbp struct ifnet *ifp = (struct ifnet*)&sc->ef_ac.ac_if; 119106939Ssam struct ifaddr *ifa2; 120106939Ssam struct sockaddr_dl *sdl2; 12154558Sbp 12254558Sbp ifp->if_output = ether_output; 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 14154558Sbp EFDEBUG("%s%d: attached\n", ifp->if_name, ifp->if_unit); 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 } 16654558Sbp 16754558Sbp TAILQ_REMOVE(&ifnet, ifp, if_link); 16854558Sbp splx(s); 16954558Sbp return 0; 17054558Sbp} 17154558Sbp 17254558Sbpstatic void 17354558Sbpef_init(void *foo) { 17454558Sbp return; 17554558Sbp} 17654558Sbp 17754558Sbpstatic int 17854558Sbpef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 17954558Sbp{ 18054558Sbp/* struct ef_link *sc = (struct ef_link*)ifp->if_softc;*/ 18154558Sbp struct ifaddr *ifa = (struct ifaddr*)data; 18254558Sbp int s, error; 18354558Sbp 18454558Sbp EFDEBUG("IOCTL %ld for %s%d\n", cmd, ifp->if_name, ifp->if_unit); 18554558Sbp error = 0; 18654558Sbp s = splimp(); 18754558Sbp switch (cmd) { 188106939Ssam case SIOCSIFFLAGS: 189106939Ssam error = 0; 190106939Ssam break; 19154558Sbp case SIOCSIFADDR: 19254558Sbp if (ifp->if_unit == ETHER_FT_8023 && 19354558Sbp ifa->ifa_addr->sa_family != AF_IPX) { 19454558Sbp error = EAFNOSUPPORT; 19554558Sbp break; 19654558Sbp } 19754558Sbp ifp->if_flags |= IFF_UP; 19854558Sbp /* FALL THROUGH */ 199106939Ssam default: 20054558Sbp error = ether_ioctl(ifp, cmd, data); 20154558Sbp break; 20254558Sbp } 20354558Sbp splx(s); 20454558Sbp return error; 20554558Sbp} 20654558Sbp 20754558Sbp/* 20854558Sbp * Currently packet prepared in the ether_output(), but this can be a better 20954558Sbp * place. 21054558Sbp */ 21154558Sbpstatic void 21254558Sbpef_start(struct ifnet *ifp) 21354558Sbp{ 21454558Sbp struct efnet *sc = (struct efnet*)ifp->if_softc; 21554558Sbp struct ifnet *p; 21654558Sbp struct mbuf *m; 21754558Sbp 21854558Sbp ifp->if_flags |= IFF_OACTIVE; 21954558Sbp p = sc->ef_ifp; 22054558Sbp 22154558Sbp EFDEBUG("\n"); 22254558Sbp for (;;) { 22354558Sbp IF_DEQUEUE(&ifp->if_snd, m); 22454558Sbp if (m == 0) 22554558Sbp break; 226106939Ssam BPF_MTAP(ifp, m); 22771891Sbp if (! IF_HANDOFF(&p->if_snd, m, p)) { 22859681Sbp ifp->if_oerrors++; 22959681Sbp continue; 23054558Sbp } 23169152Sjlemon ifp->if_opackets++; 23254558Sbp } 23354558Sbp ifp->if_flags &= ~IFF_OACTIVE; 23454558Sbp return; 23554558Sbp} 23654558Sbp 23754558Sbp/* 23854558Sbp * Inline functions do not put additional overhead to procedure call or 23954558Sbp * parameter passing but simplify the code 24054558Sbp */ 24154558Sbpstatic int __inline 24297220Speteref_inputEII(struct mbuf *m, struct ether_header *eh, 24354558Sbp u_short ether_type, struct ifqueue **inq) 24454558Sbp{ 24554558Sbp switch(ether_type) { 24654558Sbp#ifdef IPX 24754558Sbp case ETHERTYPE_IPX: 24854558Sbp schednetisr(NETISR_IPX); 24954558Sbp *inq = &ipxintrq; 25054558Sbp break; 25154558Sbp#endif 25254558Sbp#ifdef INET 25354558Sbp case ETHERTYPE_IP: 25454558Sbp if (ipflow_fastforward(m)) 25554558Sbp return 1; 25654558Sbp schednetisr(NETISR_IP); 25754558Sbp *inq = &ipintrq; 25854558Sbp break; 25954558Sbp 26054558Sbp case ETHERTYPE_ARP: 26154558Sbp schednetisr(NETISR_ARP); 26254558Sbp *inq = &arpintrq; 26354558Sbp break; 26454558Sbp#endif 26559681Sbp default: 26659681Sbp return EPROTONOSUPPORT; 26754558Sbp } 26854558Sbp return 0; 26954558Sbp} 27054558Sbp 27154558Sbpstatic int __inline 27254558Sbpef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l, 27354558Sbp u_short ether_type, struct ifqueue **inq) 27454558Sbp{ 27554558Sbp switch(ether_type) { 27654558Sbp#ifdef IPX 27754558Sbp case ETHERTYPE_IPX: 27854558Sbp m_adj(m, 8); 27954558Sbp schednetisr(NETISR_IPX); 28054558Sbp *inq = &ipxintrq; 28154558Sbp break; 28254558Sbp#endif 28359681Sbp default: 28459681Sbp return EPROTONOSUPPORT; 28554558Sbp } 28654558Sbp return 0; 28754558Sbp} 28854558Sbp 28954558Sbpstatic int __inline 29054558Sbpef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l, 29154558Sbp u_short ether_type, struct ifqueue **inq) 29254558Sbp{ 29354558Sbp switch(ether_type) { 29454558Sbp#ifdef IPX 29554558Sbp case 0xe0: 29654558Sbp m_adj(m, 3); 29754558Sbp schednetisr(NETISR_IPX); 29854558Sbp *inq = &ipxintrq; 29954558Sbp break; 30054558Sbp#endif 30159681Sbp default: 30259681Sbp return EPROTONOSUPPORT; 30354558Sbp } 30454558Sbp return 0; 30554558Sbp} 30654558Sbp/* 30754558Sbp * Called from ether_input() 30854558Sbp */ 30954558Sbpstatic int 31054558Sbpef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m) 31154558Sbp{ 31254558Sbp u_short ether_type; 31371891Sbp int ft = -1; 31454558Sbp struct ifqueue *inq; 31554558Sbp struct efnet *efp; 31654558Sbp struct ifnet *eifp; 31754558Sbp struct llc *l; 31854558Sbp struct ef_link *efl; 31954558Sbp 32054558Sbp ether_type = ntohs(eh->ether_type); 32154558Sbp if (ether_type < ETHERMTU) { 32254558Sbp l = mtod(m, struct llc*); 32354558Sbp if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) { 32454558Sbp /* 32554558Sbp * Novell's "802.3" frame 32654558Sbp */ 32754558Sbp ft = ETHER_FT_8023; 32854558Sbp } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) { 32954558Sbp /* 33054558Sbp * 802.2/SNAP 33154558Sbp */ 33254558Sbp ft = ETHER_FT_SNAP; 33354558Sbp ether_type = ntohs(l->llc_un.type_snap.ether_type); 33454558Sbp } else if (l->llc_dsap == l->llc_ssap) { 33554558Sbp /* 33654558Sbp * 802.3/802.2 33754558Sbp */ 33854558Sbp ft = ETHER_FT_8022; 33954558Sbp ether_type = l->llc_ssap; 34054558Sbp } 34154558Sbp } else 34254558Sbp ft = ETHER_FT_EII; 34354558Sbp 34454558Sbp if (ft == -1) { 34554558Sbp EFDEBUG("Unrecognised ether_type %x\n", ether_type); 34659681Sbp return EPROTONOSUPPORT; 34754558Sbp } 34854558Sbp 34954558Sbp /* 35054558Sbp * Check if interface configured for the given frame 35154558Sbp */ 35254558Sbp efp = NULL; 35354558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 35454558Sbp if (efl->el_ifp == ifp) { 35554558Sbp efp = efl->el_units[ft]; 35654558Sbp break; 35754558Sbp } 35854558Sbp } 35954558Sbp if (efp == NULL) { 36054558Sbp EFDEBUG("Can't find if for %d\n", ft); 36159681Sbp return EPROTONOSUPPORT; 36254558Sbp } 36354558Sbp eifp = &efp->ef_ac.ac_if; 36454558Sbp if ((eifp->if_flags & IFF_UP) == 0) 36559681Sbp return EPROTONOSUPPORT; 36654558Sbp eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh); 36754558Sbp m->m_pkthdr.rcvif = eifp; 36854558Sbp 36954558Sbp if (eifp->if_bpf) { 37054558Sbp struct mbuf m0; 37154558Sbp m0.m_next = m; 37254558Sbp m0.m_len = sizeof(struct ether_header); 37354558Sbp m0.m_data = (char *)eh; 374106939Ssam BPF_MTAP(eifp, &m0); 37554558Sbp } 37654558Sbp /* 37754558Sbp * Now we ready to adjust mbufs and pass them to protocol intr's 37854558Sbp */ 37954558Sbp inq = NULL; 38054558Sbp switch(ft) { 38154558Sbp case ETHER_FT_EII: 38297220Speter if (ef_inputEII(m, eh, ether_type, &inq) != 0) 38359681Sbp return EPROTONOSUPPORT; 38454558Sbp break; 38554558Sbp#ifdef IPX 38654558Sbp case ETHER_FT_8023: /* only IPX can be here */ 38754558Sbp schednetisr(NETISR_IPX); 38854558Sbp inq = &ipxintrq; 38954558Sbp break; 39054558Sbp#endif 39154558Sbp case ETHER_FT_SNAP: 39259681Sbp if (ef_inputSNAP(m, eh, l, ether_type, &inq) != 0) 39359681Sbp return EPROTONOSUPPORT; 39454558Sbp break; 39554558Sbp case ETHER_FT_8022: 39659681Sbp if (ef_input8022(m, eh, l, ether_type, &inq) != 0) 39759681Sbp return EPROTONOSUPPORT; 39854558Sbp break; 39954558Sbp } 40054558Sbp 40154558Sbp if (inq == NULL) { 40254558Sbp EFDEBUG("No support for frame %d and proto %04x\n", 40354558Sbp ft, ether_type); 40459681Sbp return EPROTONOSUPPORT; 40554558Sbp } 40669152Sjlemon (void) IF_HANDOFF(inq, m, NULL); 40754558Sbp return 0; 40854558Sbp} 40954558Sbp 41054558Sbpstatic int 41166479Sbpef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp, 41266479Sbp int *hlen) 41354558Sbp{ 41459681Sbp struct mbuf *m = *mp; 41554558Sbp u_char *cp; 41654558Sbp short type; 41754558Sbp 41854558Sbp if (ifp->if_type != IFT_XETHER) 41959681Sbp return ENETDOWN; 42054558Sbp switch (ifp->if_unit) { 42154558Sbp case ETHER_FT_EII: 42254558Sbp#ifdef IPX 42354558Sbp type = htons(ETHERTYPE_IPX); 42454558Sbp#else 42559681Sbp return EPFNOSUPPORT; 42654558Sbp#endif 42754558Sbp break; 42854558Sbp case ETHER_FT_8023: 42954558Sbp type = htons(m->m_pkthdr.len); 43054558Sbp break; 43154558Sbp case ETHER_FT_8022: 43270254Sbmilekic M_PREPEND(m, ETHER_HDR_LEN + 3, M_TRYWAIT); 43359681Sbp if (m == NULL) { 43459681Sbp *mp = NULL; 43559681Sbp return ENOBUFS; 43659681Sbp } 43759681Sbp /* 43859681Sbp * Ensure that ethernet header and next three bytes 43959681Sbp * will fit into single mbuf 44059681Sbp */ 44159681Sbp m = m_pullup(m, ETHER_HDR_LEN + 3); 44259681Sbp if (m == NULL) { 44359681Sbp *mp = NULL; 44459681Sbp return ENOBUFS; 44559681Sbp } 44659681Sbp m_adj(m, ETHER_HDR_LEN); 44754558Sbp type = htons(m->m_pkthdr.len); 44854558Sbp cp = mtod(m, u_char *); 44954558Sbp *cp++ = 0xE0; 45054558Sbp *cp++ = 0xE0; 45154558Sbp *cp++ = 0x03; 45266479Sbp *hlen += 3; 45354558Sbp break; 45454558Sbp case ETHER_FT_SNAP: 45570254Sbmilekic M_PREPEND(m, 8, M_TRYWAIT); 45659681Sbp if (m == NULL) { 45759681Sbp *mp = NULL; 45859681Sbp return ENOBUFS; 45959681Sbp } 46054558Sbp type = htons(m->m_pkthdr.len); 46154558Sbp cp = mtod(m, u_char *); 46254558Sbp bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8); 46366479Sbp *hlen += 8; 46454558Sbp break; 46554558Sbp default: 46659681Sbp return EPFNOSUPPORT; 46754558Sbp } 46859681Sbp *mp = m; 46954558Sbp *tp = type; 47054558Sbp return 0; 47154558Sbp} 47254558Sbp 47354558Sbp/* 47454558Sbp * Create clone from the given interface 47554558Sbp */ 47654558Sbpstatic int 47754558Sbpef_clone(struct ef_link *efl, int ft) 47854558Sbp{ 47954558Sbp struct efnet *efp; 48054558Sbp struct ifnet *eifp; 48154558Sbp struct ifnet *ifp = efl->el_ifp; 48254558Sbp char cbuf[IFNAMSIZ], *ifname; 48354558Sbp int ifnlen; 48454558Sbp 48569781Sdwmalone efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR, 48669781Sdwmalone M_WAITOK | M_ZERO); 48754558Sbp if (efp == NULL) 48854558Sbp return ENOMEM; 48954558Sbp efp->ef_ifp = ifp; 49054558Sbp eifp = &efp->ef_ac.ac_if; 49154558Sbp ifnlen = 1 + snprintf(cbuf, sizeof(cbuf), "%s%df", ifp->if_name, 49254558Sbp ifp->if_unit); 49354558Sbp ifname = (char*)malloc(ifnlen, M_IFADDR, M_WAITOK); 49454558Sbp eifp->if_name = strcpy(ifname, cbuf); 49554558Sbp eifp->if_unit = ft; 49654558Sbp eifp->if_softc = efp; 49754558Sbp if (ifp->if_ioctl) 49854558Sbp eifp->if_ioctl = ef_ioctl; 49954558Sbp efl->el_units[ft] = efp; 50054558Sbp return 0; 50154558Sbp} 50254558Sbp 50354558Sbpstatic int 50454558Sbpef_load(void) 50554558Sbp{ 50654558Sbp struct ifnet *ifp; 50754558Sbp struct efnet *efp; 50854558Sbp struct ef_link *efl = NULL; 50954558Sbp int error = 0, d; 51054558Sbp 51171999Sphk TAILQ_FOREACH(ifp, &ifnet, if_link) { 51254558Sbp if (ifp->if_type != IFT_ETHER) continue; 51354558Sbp EFDEBUG("Found interface %s%d\n", ifp->if_name, ifp->if_unit); 51454558Sbp efl = (struct ef_link*)malloc(sizeof(struct ef_link), 51594385Sdwmalone M_IFADDR, M_WAITOK | M_ZERO); 51654558Sbp if (efl == NULL) { 51754558Sbp error = ENOMEM; 51854558Sbp break; 51954558Sbp } 52054558Sbp 52154558Sbp efl->el_ifp = ifp; 52254558Sbp#ifdef ETHER_II 52354558Sbp error = ef_clone(efl, ETHER_FT_EII); 52454558Sbp if (error) break; 52554558Sbp#endif 52654558Sbp#ifdef ETHER_8023 52754558Sbp error = ef_clone(efl, ETHER_FT_8023); 52854558Sbp if (error) break; 52954558Sbp#endif 53054558Sbp#ifdef ETHER_8022 53154558Sbp error = ef_clone(efl, ETHER_FT_8022); 53254558Sbp if (error) break; 53354558Sbp#endif 53454558Sbp#ifdef ETHER_SNAP 53554558Sbp error = ef_clone(efl, ETHER_FT_SNAP); 53654558Sbp if (error) break; 53754558Sbp#endif 53854558Sbp efcount++; 53954558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 54054558Sbp } 54154558Sbp if (error) { 54254558Sbp if (efl) 54354558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 54454558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 54554558Sbp for (d = 0; d < EF_NFT; d++) 54654558Sbp if (efl->el_units[d]) 54754558Sbp free(efl->el_units[d], M_IFADDR); 54854558Sbp free(efl, M_IFADDR); 54954558Sbp } 55054558Sbp return error; 55154558Sbp } 55254558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 55354558Sbp for (d = 0; d < EF_NFT; d++) { 55454558Sbp efp = efl->el_units[d]; 55554558Sbp if (efp) 55654558Sbp ef_attach(efp); 55754558Sbp } 55854558Sbp } 55954558Sbp ef_inputp = ef_input; 56054558Sbp ef_outputp = ef_output; 56154558Sbp EFDEBUG("Loaded\n"); 56254558Sbp return 0; 56354558Sbp} 56454558Sbp 56554558Sbpstatic int 56654558Sbpef_unload(void) 56754558Sbp{ 56854558Sbp struct efnet *efp; 56954558Sbp struct ef_link *efl; 57054558Sbp int d; 57154558Sbp 57254558Sbp ef_inputp = NULL; 57354558Sbp ef_outputp = NULL; 57454558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 57554558Sbp for (d = 0; d < EF_NFT; d++) { 57654558Sbp efp = efl->el_units[d]; 57754558Sbp if (efp) { 57854558Sbp ef_detach(efp); 57954558Sbp } 58054558Sbp } 58154558Sbp } 58254558Sbp EFDEBUG("Unloaded\n"); 58354558Sbp return 0; 58454558Sbp} 58554558Sbp 58654558Sbpstatic int 58754558Sbpif_ef_modevent(module_t mod, int type, void *data) 58854558Sbp{ 58954558Sbp switch ((modeventtype_t)type) { 59054558Sbp case MOD_LOAD: 59154558Sbp return ef_load(); 59254558Sbp case MOD_UNLOAD: 59354558Sbp return ef_unload(); 59454558Sbp default: 59554558Sbp break; 59654558Sbp } 59754558Sbp return 0; 59854558Sbp} 59954558Sbp 60054558Sbpstatic moduledata_t if_ef_mod = { 60154558Sbp "if_ef", if_ef_modevent, NULL 60254558Sbp}; 60354558Sbp 60454558SbpDECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE); 605