if_ef.c revision 111119
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 111119 2003-02-19 05:47:46Z imp $ 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 } 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{ 18154558Sbp/* struct ef_link *sc = (struct ef_link*)ifp->if_softc;*/ 18254558Sbp struct ifaddr *ifa = (struct ifaddr*)data; 18354558Sbp int s, error; 18454558Sbp 18554558Sbp EFDEBUG("IOCTL %ld for %s%d\n", cmd, ifp->if_name, ifp->if_unit); 18654558Sbp error = 0; 18754558Sbp s = splimp(); 18854558Sbp switch (cmd) { 189106939Ssam case SIOCSIFFLAGS: 190106939Ssam error = 0; 191106939Ssam break; 19254558Sbp case SIOCSIFADDR: 19354558Sbp if (ifp->if_unit == 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; 21854558Sbp 21954558Sbp ifp->if_flags |= IFF_OACTIVE; 22054558Sbp p = sc->ef_ifp; 22154558Sbp 22254558Sbp EFDEBUG("\n"); 22354558Sbp for (;;) { 22454558Sbp IF_DEQUEUE(&ifp->if_snd, m); 22554558Sbp if (m == 0) 22654558Sbp break; 227106939Ssam BPF_MTAP(ifp, m); 22871891Sbp if (! IF_HANDOFF(&p->if_snd, m, p)) { 22959681Sbp ifp->if_oerrors++; 23059681Sbp continue; 23154558Sbp } 23269152Sjlemon ifp->if_opackets++; 23354558Sbp } 23454558Sbp ifp->if_flags &= ~IFF_OACTIVE; 23554558Sbp return; 23654558Sbp} 23754558Sbp 23854558Sbp/* 23954558Sbp * Inline functions do not put additional overhead to procedure call or 24054558Sbp * parameter passing but simplify the code 24154558Sbp */ 24254558Sbpstatic int __inline 24397220Speteref_inputEII(struct mbuf *m, struct ether_header *eh, 24454558Sbp u_short ether_type, struct ifqueue **inq) 24554558Sbp{ 24654558Sbp switch(ether_type) { 24754558Sbp#ifdef IPX 24854558Sbp case ETHERTYPE_IPX: 24954558Sbp schednetisr(NETISR_IPX); 25054558Sbp *inq = &ipxintrq; 25154558Sbp break; 25254558Sbp#endif 25354558Sbp#ifdef INET 25454558Sbp case ETHERTYPE_IP: 25554558Sbp if (ipflow_fastforward(m)) 25654558Sbp return 1; 25754558Sbp schednetisr(NETISR_IP); 25854558Sbp *inq = &ipintrq; 25954558Sbp break; 26054558Sbp 26154558Sbp case ETHERTYPE_ARP: 26254558Sbp schednetisr(NETISR_ARP); 26354558Sbp *inq = &arpintrq; 26454558Sbp break; 26554558Sbp#endif 26659681Sbp default: 26759681Sbp return EPROTONOSUPPORT; 26854558Sbp } 26954558Sbp return 0; 27054558Sbp} 27154558Sbp 27254558Sbpstatic int __inline 27354558Sbpef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l, 27454558Sbp u_short ether_type, struct ifqueue **inq) 27554558Sbp{ 27654558Sbp switch(ether_type) { 27754558Sbp#ifdef IPX 27854558Sbp case ETHERTYPE_IPX: 27954558Sbp m_adj(m, 8); 28054558Sbp schednetisr(NETISR_IPX); 28154558Sbp *inq = &ipxintrq; 28254558Sbp break; 28354558Sbp#endif 28459681Sbp default: 28559681Sbp return EPROTONOSUPPORT; 28654558Sbp } 28754558Sbp return 0; 28854558Sbp} 28954558Sbp 29054558Sbpstatic int __inline 29154558Sbpef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l, 29254558Sbp u_short ether_type, struct ifqueue **inq) 29354558Sbp{ 29454558Sbp switch(ether_type) { 29554558Sbp#ifdef IPX 29654558Sbp case 0xe0: 29754558Sbp m_adj(m, 3); 29854558Sbp schednetisr(NETISR_IPX); 29954558Sbp *inq = &ipxintrq; 30054558Sbp break; 30154558Sbp#endif 30259681Sbp default: 30359681Sbp return EPROTONOSUPPORT; 30454558Sbp } 30554558Sbp return 0; 30654558Sbp} 30754558Sbp/* 30854558Sbp * Called from ether_input() 30954558Sbp */ 31054558Sbpstatic int 31154558Sbpef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m) 31254558Sbp{ 31354558Sbp u_short ether_type; 31471891Sbp int ft = -1; 31554558Sbp struct ifqueue *inq; 31654558Sbp struct efnet *efp; 31754558Sbp struct ifnet *eifp; 31854558Sbp struct llc *l; 31954558Sbp struct ef_link *efl; 32054558Sbp 32154558Sbp ether_type = ntohs(eh->ether_type); 32254558Sbp if (ether_type < ETHERMTU) { 32354558Sbp l = mtod(m, struct llc*); 32454558Sbp if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) { 32554558Sbp /* 32654558Sbp * Novell's "802.3" frame 32754558Sbp */ 32854558Sbp ft = ETHER_FT_8023; 32954558Sbp } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) { 33054558Sbp /* 33154558Sbp * 802.2/SNAP 33254558Sbp */ 33354558Sbp ft = ETHER_FT_SNAP; 33454558Sbp ether_type = ntohs(l->llc_un.type_snap.ether_type); 33554558Sbp } else if (l->llc_dsap == l->llc_ssap) { 33654558Sbp /* 33754558Sbp * 802.3/802.2 33854558Sbp */ 33954558Sbp ft = ETHER_FT_8022; 34054558Sbp ether_type = l->llc_ssap; 34154558Sbp } 34254558Sbp } else 34354558Sbp ft = ETHER_FT_EII; 34454558Sbp 34554558Sbp if (ft == -1) { 34654558Sbp EFDEBUG("Unrecognised ether_type %x\n", ether_type); 34759681Sbp return EPROTONOSUPPORT; 34854558Sbp } 34954558Sbp 35054558Sbp /* 35154558Sbp * Check if interface configured for the given frame 35254558Sbp */ 35354558Sbp efp = NULL; 35454558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 35554558Sbp if (efl->el_ifp == ifp) { 35654558Sbp efp = efl->el_units[ft]; 35754558Sbp break; 35854558Sbp } 35954558Sbp } 36054558Sbp if (efp == NULL) { 36154558Sbp EFDEBUG("Can't find if for %d\n", ft); 36259681Sbp return EPROTONOSUPPORT; 36354558Sbp } 36454558Sbp eifp = &efp->ef_ac.ac_if; 36554558Sbp if ((eifp->if_flags & IFF_UP) == 0) 36659681Sbp return EPROTONOSUPPORT; 36754558Sbp eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh); 36854558Sbp m->m_pkthdr.rcvif = eifp; 36954558Sbp 37054558Sbp if (eifp->if_bpf) { 37154558Sbp struct mbuf m0; 37254558Sbp m0.m_next = m; 37354558Sbp m0.m_len = sizeof(struct ether_header); 37454558Sbp m0.m_data = (char *)eh; 375106939Ssam BPF_MTAP(eifp, &m0); 37654558Sbp } 37754558Sbp /* 37854558Sbp * Now we ready to adjust mbufs and pass them to protocol intr's 37954558Sbp */ 38054558Sbp inq = NULL; 38154558Sbp switch(ft) { 38254558Sbp case ETHER_FT_EII: 38397220Speter if (ef_inputEII(m, eh, ether_type, &inq) != 0) 38459681Sbp return EPROTONOSUPPORT; 38554558Sbp break; 38654558Sbp#ifdef IPX 38754558Sbp case ETHER_FT_8023: /* only IPX can be here */ 38854558Sbp schednetisr(NETISR_IPX); 38954558Sbp inq = &ipxintrq; 39054558Sbp break; 39154558Sbp#endif 39254558Sbp case ETHER_FT_SNAP: 39359681Sbp if (ef_inputSNAP(m, eh, l, ether_type, &inq) != 0) 39459681Sbp return EPROTONOSUPPORT; 39554558Sbp break; 39654558Sbp case ETHER_FT_8022: 39759681Sbp if (ef_input8022(m, eh, l, ether_type, &inq) != 0) 39859681Sbp return EPROTONOSUPPORT; 39954558Sbp break; 40054558Sbp } 40154558Sbp 40254558Sbp if (inq == NULL) { 40354558Sbp EFDEBUG("No support for frame %d and proto %04x\n", 40454558Sbp ft, ether_type); 40559681Sbp return EPROTONOSUPPORT; 40654558Sbp } 40769152Sjlemon (void) IF_HANDOFF(inq, m, NULL); 40854558Sbp return 0; 40954558Sbp} 41054558Sbp 41154558Sbpstatic int 41266479Sbpef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp, 41366479Sbp int *hlen) 41454558Sbp{ 41559681Sbp struct mbuf *m = *mp; 41654558Sbp u_char *cp; 41754558Sbp short type; 41854558Sbp 41954558Sbp if (ifp->if_type != IFT_XETHER) 42059681Sbp return ENETDOWN; 42154558Sbp switch (ifp->if_unit) { 42254558Sbp case ETHER_FT_EII: 42354558Sbp#ifdef IPX 42454558Sbp type = htons(ETHERTYPE_IPX); 42554558Sbp#else 42659681Sbp return EPFNOSUPPORT; 42754558Sbp#endif 42854558Sbp break; 42954558Sbp case ETHER_FT_8023: 43054558Sbp type = htons(m->m_pkthdr.len); 43154558Sbp break; 43254558Sbp case ETHER_FT_8022: 433111119Simp M_PREPEND(m, ETHER_HDR_LEN + 3, M_TRYWAIT); 43459681Sbp if (m == NULL) { 43559681Sbp *mp = NULL; 43659681Sbp return ENOBUFS; 43759681Sbp } 43859681Sbp /* 43959681Sbp * Ensure that ethernet header and next three bytes 44059681Sbp * will fit into single mbuf 44159681Sbp */ 44259681Sbp m = m_pullup(m, ETHER_HDR_LEN + 3); 44359681Sbp if (m == NULL) { 44459681Sbp *mp = NULL; 44559681Sbp return ENOBUFS; 44659681Sbp } 44759681Sbp m_adj(m, ETHER_HDR_LEN); 44854558Sbp type = htons(m->m_pkthdr.len); 44954558Sbp cp = mtod(m, u_char *); 45054558Sbp *cp++ = 0xE0; 45154558Sbp *cp++ = 0xE0; 45254558Sbp *cp++ = 0x03; 45366479Sbp *hlen += 3; 45454558Sbp break; 45554558Sbp case ETHER_FT_SNAP: 456111119Simp M_PREPEND(m, 8, M_TRYWAIT); 45759681Sbp if (m == NULL) { 45859681Sbp *mp = NULL; 45959681Sbp return ENOBUFS; 46059681Sbp } 46154558Sbp type = htons(m->m_pkthdr.len); 46254558Sbp cp = mtod(m, u_char *); 46354558Sbp bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8); 46466479Sbp *hlen += 8; 46554558Sbp break; 46654558Sbp default: 46759681Sbp return EPFNOSUPPORT; 46854558Sbp } 46959681Sbp *mp = m; 47054558Sbp *tp = type; 47154558Sbp return 0; 47254558Sbp} 47354558Sbp 47454558Sbp/* 47554558Sbp * Create clone from the given interface 47654558Sbp */ 47754558Sbpstatic int 47854558Sbpef_clone(struct ef_link *efl, int ft) 47954558Sbp{ 48054558Sbp struct efnet *efp; 48154558Sbp struct ifnet *eifp; 48254558Sbp struct ifnet *ifp = efl->el_ifp; 48354558Sbp char cbuf[IFNAMSIZ], *ifname; 48454558Sbp int ifnlen; 48554558Sbp 48669781Sdwmalone efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR, 487111119Simp M_WAITOK | M_ZERO); 48854558Sbp if (efp == NULL) 48954558Sbp return ENOMEM; 49054558Sbp efp->ef_ifp = ifp; 49154558Sbp eifp = &efp->ef_ac.ac_if; 49254558Sbp ifnlen = 1 + snprintf(cbuf, sizeof(cbuf), "%s%df", ifp->if_name, 49354558Sbp ifp->if_unit); 494111119Simp ifname = (char*)malloc(ifnlen, M_IFADDR, M_WAITOK); 49554558Sbp eifp->if_name = strcpy(ifname, cbuf); 49654558Sbp eifp->if_unit = ft; 49754558Sbp eifp->if_softc = efp; 49854558Sbp if (ifp->if_ioctl) 49954558Sbp eifp->if_ioctl = ef_ioctl; 50054558Sbp efl->el_units[ft] = efp; 50154558Sbp return 0; 50254558Sbp} 50354558Sbp 50454558Sbpstatic int 50554558Sbpef_load(void) 50654558Sbp{ 50754558Sbp struct ifnet *ifp; 50854558Sbp struct efnet *efp; 50954558Sbp struct ef_link *efl = NULL; 51054558Sbp int error = 0, d; 51154558Sbp 512108172Shsu IFNET_RLOCK(); 51371999Sphk TAILQ_FOREACH(ifp, &ifnet, if_link) { 51454558Sbp if (ifp->if_type != IFT_ETHER) continue; 51554558Sbp EFDEBUG("Found interface %s%d\n", ifp->if_name, ifp->if_unit); 51654558Sbp efl = (struct ef_link*)malloc(sizeof(struct ef_link), 517111119Simp M_IFADDR, M_WAITOK | M_ZERO); 51854558Sbp if (efl == NULL) { 51954558Sbp error = ENOMEM; 52054558Sbp break; 52154558Sbp } 52254558Sbp 52354558Sbp efl->el_ifp = ifp; 52454558Sbp#ifdef ETHER_II 52554558Sbp error = ef_clone(efl, ETHER_FT_EII); 52654558Sbp if (error) break; 52754558Sbp#endif 52854558Sbp#ifdef ETHER_8023 52954558Sbp error = ef_clone(efl, ETHER_FT_8023); 53054558Sbp if (error) break; 53154558Sbp#endif 53254558Sbp#ifdef ETHER_8022 53354558Sbp error = ef_clone(efl, ETHER_FT_8022); 53454558Sbp if (error) break; 53554558Sbp#endif 53654558Sbp#ifdef ETHER_SNAP 53754558Sbp error = ef_clone(efl, ETHER_FT_SNAP); 53854558Sbp if (error) break; 53954558Sbp#endif 54054558Sbp efcount++; 54154558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 54254558Sbp } 543108172Shsu IFNET_RUNLOCK(); 54454558Sbp if (error) { 54554558Sbp if (efl) 54654558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 54754558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 54854558Sbp for (d = 0; d < EF_NFT; d++) 54954558Sbp if (efl->el_units[d]) 55054558Sbp free(efl->el_units[d], M_IFADDR); 55154558Sbp free(efl, M_IFADDR); 55254558Sbp } 55354558Sbp return error; 55454558Sbp } 55554558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 55654558Sbp for (d = 0; d < EF_NFT; d++) { 55754558Sbp efp = efl->el_units[d]; 55854558Sbp if (efp) 55954558Sbp ef_attach(efp); 56054558Sbp } 56154558Sbp } 56254558Sbp ef_inputp = ef_input; 56354558Sbp ef_outputp = ef_output; 56454558Sbp EFDEBUG("Loaded\n"); 56554558Sbp return 0; 56654558Sbp} 56754558Sbp 56854558Sbpstatic int 56954558Sbpef_unload(void) 57054558Sbp{ 57154558Sbp struct efnet *efp; 57254558Sbp struct ef_link *efl; 57354558Sbp int d; 57454558Sbp 57554558Sbp ef_inputp = NULL; 57654558Sbp ef_outputp = NULL; 57754558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 57854558Sbp for (d = 0; d < EF_NFT; d++) { 57954558Sbp efp = efl->el_units[d]; 58054558Sbp if (efp) { 58154558Sbp ef_detach(efp); 58254558Sbp } 58354558Sbp } 58454558Sbp } 58554558Sbp EFDEBUG("Unloaded\n"); 58654558Sbp return 0; 58754558Sbp} 58854558Sbp 58954558Sbpstatic int 59054558Sbpif_ef_modevent(module_t mod, int type, void *data) 59154558Sbp{ 59254558Sbp switch ((modeventtype_t)type) { 59354558Sbp case MOD_LOAD: 59454558Sbp return ef_load(); 59554558Sbp case MOD_UNLOAD: 59654558Sbp return ef_unload(); 59754558Sbp default: 59854558Sbp break; 59954558Sbp } 60054558Sbp return 0; 60154558Sbp} 60254558Sbp 60354558Sbpstatic moduledata_t if_ef_mod = { 60454558Sbp "if_ef", if_ef_modevent, NULL 60554558Sbp}; 60654558Sbp 60754558SbpDECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE); 608