if_ef.c revision 59681
154558Sbp/*- 254558Sbp * Copyright (c) 1999, 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 59681 2000-04-27 10:13:52Z bp $ 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 7254558Sbp#define EFDEBUG(format, args...) printf("%s: "format, __FUNCTION__ ,## args) 7354558Sbp#else 7454558Sbp#define EFDEBUG(format, args...) 7554558Sbp#endif 7654558Sbp 7754558Sbp#define EFERROR(format, args...) printf("%s: "format, __FUNCTION__ ,## args) 7854558Sbp 7954558Sbpstruct efnet { 8054558Sbp struct arpcom ef_ac; 8154558Sbp struct ifnet * ef_ifp; 8254558Sbp}; 8354558Sbp 8454558Sbpstruct ef_link { 8554558Sbp 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 9054558Sbpstatic 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, 9554558Sbp struct sockaddr *dst, short *tp); 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, 10754558Sbp struct sockaddr *dst, short *tp); 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; 11954558Sbp struct ifaddr *ifa1, *ifa2; 12054558Sbp struct sockaddr_dl *sdl1, *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 */ 13154558Sbp if_attach(ifp); 13254558Sbp ether_ifattach(ifp); 13354558Sbp bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); 13454558Sbp 13554558Sbp ifp->if_resolvemulti = 0; 13654558Sbp ifp->if_type = IFT_XETHER; 13754558Sbp ifp->if_flags |= IFF_RUNNING; 13854558Sbp 13954558Sbp ifa1 = ifnet_addrs[ifp->if_index - 1]; 14054558Sbp ifa2 = ifnet_addrs[sc->ef_ifp->if_index - 1]; 14154558Sbp sdl1 = (struct sockaddr_dl *)ifa1->ifa_addr; 14254558Sbp sdl2 = (struct sockaddr_dl *)ifa2->ifa_addr; 14354558Sbp sdl1->sdl_type = IFT_ETHER; 14454558Sbp sdl1->sdl_alen = ETHER_ADDR_LEN; 14554558Sbp bcopy(LLADDR(sdl2), LLADDR(sdl1), ETHER_ADDR_LEN); 14654558Sbp bcopy(LLADDR(sdl2), sc->ef_ac.ac_enaddr, ETHER_ADDR_LEN); 14754558Sbp 14854558Sbp EFDEBUG("%s%d: attached\n", ifp->if_name, ifp->if_unit); 14954558Sbp return 1; 15054558Sbp} 15154558Sbp 15254558Sbp/* 15354558Sbp * This is for _testing_only_, just removes interface from interfaces list 15454558Sbp */ 15554558Sbpstatic int 15654558Sbpef_detach(struct efnet *sc) 15754558Sbp{ 15854558Sbp struct ifnet *ifp = (struct ifnet*)&sc->ef_ac.ac_if; 15954558Sbp int s; 16054558Sbp 16154558Sbp s = splimp(); 16254558Sbp 16354558Sbp if (ifp->if_flags & IFF_UP) { 16454558Sbp if_down(ifp); 16554558Sbp if (ifp->if_flags & IFF_RUNNING) { 16654558Sbp /* find internet addresses and delete routes */ 16754558Sbp register struct ifaddr *ifa; 16854558Sbp for (ifa = ifp->if_addrhead.tqh_first; ifa; 16954558Sbp ifa = ifa->ifa_link.tqe_next) { 17054558Sbp rtinit(ifa, (int)RTM_DELETE, 0); 17154558Sbp } 17254558Sbp } 17354558Sbp } 17454558Sbp 17554558Sbp TAILQ_REMOVE(&ifnet, ifp, if_link); 17654558Sbp splx(s); 17754558Sbp return 0; 17854558Sbp} 17954558Sbp 18054558Sbpstatic void 18154558Sbpef_init(void *foo) { 18254558Sbp return; 18354558Sbp} 18454558Sbp 18554558Sbpstatic int 18654558Sbpef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 18754558Sbp{ 18854558Sbp/* struct ef_link *sc = (struct ef_link*)ifp->if_softc;*/ 18954558Sbp struct ifaddr *ifa = (struct ifaddr*)data; 19054558Sbp int s, error; 19154558Sbp 19254558Sbp EFDEBUG("IOCTL %ld for %s%d\n", cmd, ifp->if_name, ifp->if_unit); 19354558Sbp error = 0; 19454558Sbp s = splimp(); 19554558Sbp switch (cmd) { 19654558Sbp case SIOCSIFADDR: 19754558Sbp if (ifp->if_unit == ETHER_FT_8023 && 19854558Sbp ifa->ifa_addr->sa_family != AF_IPX) { 19954558Sbp error = EAFNOSUPPORT; 20054558Sbp break; 20154558Sbp } 20254558Sbp ifp->if_flags |= IFF_UP; 20354558Sbp /* FALL THROUGH */ 20454558Sbp case SIOCGIFADDR: 20554558Sbp case SIOCSIFMTU: 20654558Sbp error = ether_ioctl(ifp, cmd, data); 20754558Sbp break; 20854558Sbp case SIOCSIFFLAGS: 20954558Sbp error = 0; 21054558Sbp break; 21154558Sbp default: 21254558Sbp error = EINVAL; 21354558Sbp } 21454558Sbp splx(s); 21554558Sbp return error; 21654558Sbp} 21754558Sbp 21854558Sbp/* 21954558Sbp * Currently packet prepared in the ether_output(), but this can be a better 22054558Sbp * place. 22154558Sbp */ 22254558Sbpstatic void 22354558Sbpef_start(struct ifnet *ifp) 22454558Sbp{ 22554558Sbp struct efnet *sc = (struct efnet*)ifp->if_softc; 22654558Sbp struct ifnet *p; 22754558Sbp struct mbuf *m; 22854558Sbp 22954558Sbp ifp->if_flags |= IFF_OACTIVE; 23054558Sbp p = sc->ef_ifp; 23154558Sbp 23254558Sbp EFDEBUG("\n"); 23354558Sbp for (;;) { 23454558Sbp IF_DEQUEUE(&ifp->if_snd, m); 23554558Sbp if (m == 0) 23654558Sbp break; 23754558Sbp if (ifp->if_bpf) 23854558Sbp bpf_mtap(ifp, m); 23954558Sbp if (IF_QFULL(&p->if_snd)) { 24054558Sbp IF_DROP(&p->if_snd); 24159681Sbp ifp->if_oerrors++; 24259681Sbp m_freem(m); 24359681Sbp continue; 24454558Sbp } 24554558Sbp IF_ENQUEUE(&p->if_snd, m); 24659681Sbp if ((p->if_flags & IFF_OACTIVE) == 0) { 24754558Sbp p->if_start(p); 24859681Sbp ifp->if_opackets++; 24959681Sbp } 25054558Sbp } 25154558Sbp ifp->if_flags &= ~IFF_OACTIVE; 25254558Sbp return; 25354558Sbp} 25454558Sbp 25554558Sbp/* 25654558Sbp * Inline functions do not put additional overhead to procedure call or 25754558Sbp * parameter passing but simplify the code 25854558Sbp */ 25954558Sbpstatic int __inline 26054558Sbpef_inputEII(struct mbuf *m, struct ether_header *eh, struct llc* l, 26154558Sbp u_short ether_type, struct ifqueue **inq) 26254558Sbp{ 26354558Sbp switch(ether_type) { 26454558Sbp#ifdef IPX 26554558Sbp case ETHERTYPE_IPX: 26654558Sbp schednetisr(NETISR_IPX); 26754558Sbp *inq = &ipxintrq; 26854558Sbp break; 26954558Sbp#endif 27054558Sbp#ifdef INET 27154558Sbp case ETHERTYPE_IP: 27254558Sbp if (ipflow_fastforward(m)) 27354558Sbp return 1; 27454558Sbp schednetisr(NETISR_IP); 27554558Sbp *inq = &ipintrq; 27654558Sbp break; 27754558Sbp 27854558Sbp case ETHERTYPE_ARP: 27954558Sbp schednetisr(NETISR_ARP); 28054558Sbp *inq = &arpintrq; 28154558Sbp break; 28254558Sbp#endif 28359681Sbp default: 28459681Sbp return EPROTONOSUPPORT; 28554558Sbp } 28654558Sbp return 0; 28754558Sbp} 28854558Sbp 28954558Sbpstatic int __inline 29054558Sbpef_inputSNAP(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 ETHERTYPE_IPX: 29654558Sbp m_adj(m, 8); 29754558Sbp schednetisr(NETISR_IPX); 29854558Sbp *inq = &ipxintrq; 29954558Sbp break; 30054558Sbp#endif 30159681Sbp default: 30259681Sbp return EPROTONOSUPPORT; 30354558Sbp } 30454558Sbp return 0; 30554558Sbp} 30654558Sbp 30754558Sbpstatic int __inline 30854558Sbpef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l, 30954558Sbp u_short ether_type, struct ifqueue **inq) 31054558Sbp{ 31154558Sbp switch(ether_type) { 31254558Sbp#ifdef IPX 31354558Sbp case 0xe0: 31454558Sbp m_adj(m, 3); 31554558Sbp schednetisr(NETISR_IPX); 31654558Sbp *inq = &ipxintrq; 31754558Sbp break; 31854558Sbp#endif 31959681Sbp default: 32059681Sbp return EPROTONOSUPPORT; 32154558Sbp } 32254558Sbp return 0; 32354558Sbp} 32454558Sbp/* 32554558Sbp * Called from ether_input() 32654558Sbp */ 32754558Sbpstatic int 32854558Sbpef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m) 32954558Sbp{ 33054558Sbp u_short ether_type; 33154558Sbp int s, ft = -1; 33254558Sbp struct ifqueue *inq; 33354558Sbp struct efnet *efp; 33454558Sbp struct ifnet *eifp; 33554558Sbp struct llc *l; 33654558Sbp struct ef_link *efl; 33754558Sbp 33854558Sbp ether_type = ntohs(eh->ether_type); 33954558Sbp if (ether_type < ETHERMTU) { 34054558Sbp l = mtod(m, struct llc*); 34154558Sbp if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) { 34254558Sbp /* 34354558Sbp * Novell's "802.3" frame 34454558Sbp */ 34554558Sbp ft = ETHER_FT_8023; 34654558Sbp } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) { 34754558Sbp /* 34854558Sbp * 802.2/SNAP 34954558Sbp */ 35054558Sbp ft = ETHER_FT_SNAP; 35154558Sbp ether_type = ntohs(l->llc_un.type_snap.ether_type); 35254558Sbp } else if (l->llc_dsap == l->llc_ssap) { 35354558Sbp /* 35454558Sbp * 802.3/802.2 35554558Sbp */ 35654558Sbp ft = ETHER_FT_8022; 35754558Sbp ether_type = l->llc_ssap; 35854558Sbp } 35954558Sbp } else 36054558Sbp ft = ETHER_FT_EII; 36154558Sbp 36254558Sbp if (ft == -1) { 36354558Sbp EFDEBUG("Unrecognised ether_type %x\n", ether_type); 36459681Sbp return EPROTONOSUPPORT; 36554558Sbp } 36654558Sbp 36754558Sbp /* 36854558Sbp * Check if interface configured for the given frame 36954558Sbp */ 37054558Sbp efp = NULL; 37154558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 37254558Sbp if (efl->el_ifp == ifp) { 37354558Sbp efp = efl->el_units[ft]; 37454558Sbp break; 37554558Sbp } 37654558Sbp } 37754558Sbp if (efp == NULL) { 37854558Sbp EFDEBUG("Can't find if for %d\n", ft); 37959681Sbp return EPROTONOSUPPORT; 38054558Sbp } 38154558Sbp eifp = &efp->ef_ac.ac_if; 38254558Sbp if ((eifp->if_flags & IFF_UP) == 0) 38359681Sbp return EPROTONOSUPPORT; 38454558Sbp eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh); 38554558Sbp m->m_pkthdr.rcvif = eifp; 38654558Sbp 38754558Sbp if (eifp->if_bpf) { 38854558Sbp struct mbuf m0; 38954558Sbp m0.m_next = m; 39054558Sbp m0.m_len = sizeof(struct ether_header); 39154558Sbp m0.m_data = (char *)eh; 39254558Sbp bpf_mtap(eifp, &m0); 39354558Sbp } 39454558Sbp /* 39554558Sbp * Now we ready to adjust mbufs and pass them to protocol intr's 39654558Sbp */ 39754558Sbp inq = NULL; 39854558Sbp switch(ft) { 39954558Sbp case ETHER_FT_EII: 40059681Sbp if (ef_inputEII(m, eh, l, ether_type, &inq) != 0) 40159681Sbp return EPROTONOSUPPORT; 40254558Sbp break; 40354558Sbp#ifdef IPX 40454558Sbp case ETHER_FT_8023: /* only IPX can be here */ 40554558Sbp schednetisr(NETISR_IPX); 40654558Sbp inq = &ipxintrq; 40754558Sbp break; 40854558Sbp#endif 40954558Sbp case ETHER_FT_SNAP: 41059681Sbp if (ef_inputSNAP(m, eh, l, ether_type, &inq) != 0) 41159681Sbp return EPROTONOSUPPORT; 41254558Sbp break; 41354558Sbp case ETHER_FT_8022: 41459681Sbp if (ef_input8022(m, eh, l, ether_type, &inq) != 0) 41559681Sbp return EPROTONOSUPPORT; 41654558Sbp break; 41754558Sbp } 41854558Sbp 41954558Sbp if (inq == NULL) { 42054558Sbp EFDEBUG("No support for frame %d and proto %04x\n", 42154558Sbp ft, ether_type); 42259681Sbp return EPROTONOSUPPORT; 42354558Sbp } 42454558Sbp s = splimp(); 42554558Sbp if (IF_QFULL(inq)) { 42654558Sbp IF_DROP(inq); 42754558Sbp m_freem(m); 42854558Sbp } else 42954558Sbp IF_ENQUEUE(inq, m); 43054558Sbp splx(s); 43154558Sbp return 0; 43254558Sbp} 43354558Sbp 43454558Sbpstatic int 43559681Sbpef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp) 43654558Sbp{ 43759681Sbp struct mbuf *m = *mp; 43854558Sbp u_char *cp; 43954558Sbp short type; 44054558Sbp 44154558Sbp if (ifp->if_type != IFT_XETHER) 44259681Sbp return ENETDOWN; 44354558Sbp switch (ifp->if_unit) { 44454558Sbp case ETHER_FT_EII: 44554558Sbp#ifdef IPX 44654558Sbp type = htons(ETHERTYPE_IPX); 44754558Sbp#else 44859681Sbp return EPFNOSUPPORT; 44954558Sbp#endif 45054558Sbp break; 45154558Sbp case ETHER_FT_8023: 45254558Sbp type = htons(m->m_pkthdr.len); 45354558Sbp break; 45454558Sbp case ETHER_FT_8022: 45559681Sbp M_PREPEND(m, ETHER_HDR_LEN + 3, M_WAIT); 45659681Sbp if (m == NULL) { 45759681Sbp *mp = NULL; 45859681Sbp return ENOBUFS; 45959681Sbp } 46059681Sbp /* 46159681Sbp * Ensure that ethernet header and next three bytes 46259681Sbp * will fit into single mbuf 46359681Sbp */ 46459681Sbp m = m_pullup(m, ETHER_HDR_LEN + 3); 46559681Sbp if (m == NULL) { 46659681Sbp *mp = NULL; 46759681Sbp return ENOBUFS; 46859681Sbp } 46959681Sbp m_adj(m, ETHER_HDR_LEN); 47054558Sbp type = htons(m->m_pkthdr.len); 47154558Sbp cp = mtod(m, u_char *); 47254558Sbp *cp++ = 0xE0; 47354558Sbp *cp++ = 0xE0; 47454558Sbp *cp++ = 0x03; 47554558Sbp break; 47654558Sbp case ETHER_FT_SNAP: 47754558Sbp M_PREPEND(m, 8, M_WAIT); 47859681Sbp if (m == NULL) { 47959681Sbp *mp = NULL; 48059681Sbp return ENOBUFS; 48159681Sbp } 48254558Sbp type = htons(m->m_pkthdr.len); 48354558Sbp cp = mtod(m, u_char *); 48454558Sbp bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8); 48554558Sbp break; 48654558Sbp default: 48759681Sbp return EPFNOSUPPORT; 48854558Sbp } 48959681Sbp *mp = m; 49054558Sbp *tp = type; 49154558Sbp return 0; 49254558Sbp} 49354558Sbp 49454558Sbp/* 49554558Sbp * Create clone from the given interface 49654558Sbp */ 49754558Sbpstatic int 49854558Sbpef_clone(struct ef_link *efl, int ft) 49954558Sbp{ 50054558Sbp struct efnet *efp; 50154558Sbp struct ifnet *eifp; 50254558Sbp struct ifnet *ifp = efl->el_ifp; 50354558Sbp char cbuf[IFNAMSIZ], *ifname; 50454558Sbp int ifnlen; 50554558Sbp 50654558Sbp efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR, M_WAITOK); 50754558Sbp if (efp == NULL) 50854558Sbp return ENOMEM; 50954558Sbp bzero(efp, sizeof(*efp)); 51054558Sbp efp->ef_ifp = ifp; 51154558Sbp eifp = &efp->ef_ac.ac_if; 51254558Sbp ifnlen = 1 + snprintf(cbuf, sizeof(cbuf), "%s%df", ifp->if_name, 51354558Sbp ifp->if_unit); 51454558Sbp ifname = (char*)malloc(ifnlen, M_IFADDR, M_WAITOK); 51554558Sbp eifp->if_name = strcpy(ifname, cbuf); 51654558Sbp eifp->if_unit = ft; 51754558Sbp eifp->if_softc = efp; 51854558Sbp if (ifp->if_ioctl) 51954558Sbp eifp->if_ioctl = ef_ioctl; 52054558Sbp efl->el_units[ft] = efp; 52154558Sbp return 0; 52254558Sbp} 52354558Sbp 52454558Sbpstatic int 52554558Sbpef_load(void) 52654558Sbp{ 52754558Sbp struct ifnet *ifp; 52854558Sbp struct efnet *efp; 52954558Sbp struct ef_link *efl = NULL; 53054558Sbp int error = 0, d; 53154558Sbp 53254558Sbp for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next) { 53354558Sbp if (ifp->if_type != IFT_ETHER) continue; 53454558Sbp EFDEBUG("Found interface %s%d\n", ifp->if_name, ifp->if_unit); 53554558Sbp efl = (struct ef_link*)malloc(sizeof(struct ef_link), 53654558Sbp M_IFADDR, M_WAITOK); 53754558Sbp if (efl == NULL) { 53854558Sbp error = ENOMEM; 53954558Sbp break; 54054558Sbp } 54154558Sbp bzero(efl, sizeof(*efl)); 54254558Sbp 54354558Sbp efl->el_ifp = ifp; 54454558Sbp#ifdef ETHER_II 54554558Sbp error = ef_clone(efl, ETHER_FT_EII); 54654558Sbp if (error) break; 54754558Sbp#endif 54854558Sbp#ifdef ETHER_8023 54954558Sbp error = ef_clone(efl, ETHER_FT_8023); 55054558Sbp if (error) break; 55154558Sbp#endif 55254558Sbp#ifdef ETHER_8022 55354558Sbp error = ef_clone(efl, ETHER_FT_8022); 55454558Sbp if (error) break; 55554558Sbp#endif 55654558Sbp#ifdef ETHER_SNAP 55754558Sbp error = ef_clone(efl, ETHER_FT_SNAP); 55854558Sbp if (error) break; 55954558Sbp#endif 56054558Sbp efcount++; 56154558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 56254558Sbp } 56354558Sbp if (error) { 56454558Sbp if (efl) 56554558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 56654558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 56754558Sbp for (d = 0; d < EF_NFT; d++) 56854558Sbp if (efl->el_units[d]) 56954558Sbp free(efl->el_units[d], M_IFADDR); 57054558Sbp free(efl, M_IFADDR); 57154558Sbp } 57254558Sbp return error; 57354558Sbp } 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_attach(efp); 57954558Sbp } 58054558Sbp } 58154558Sbp ef_inputp = ef_input; 58254558Sbp ef_outputp = ef_output; 58354558Sbp EFDEBUG("Loaded\n"); 58454558Sbp return 0; 58554558Sbp} 58654558Sbp 58754558Sbpstatic int 58854558Sbpef_unload(void) 58954558Sbp{ 59054558Sbp struct efnet *efp; 59154558Sbp struct ef_link *efl; 59254558Sbp int d; 59354558Sbp 59454558Sbp ef_inputp = NULL; 59554558Sbp ef_outputp = NULL; 59654558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 59754558Sbp for (d = 0; d < EF_NFT; d++) { 59854558Sbp efp = efl->el_units[d]; 59954558Sbp if (efp) { 60054558Sbp ef_detach(efp); 60154558Sbp } 60254558Sbp } 60354558Sbp } 60454558Sbp EFDEBUG("Unloaded\n"); 60554558Sbp return 0; 60654558Sbp} 60754558Sbp 60854558Sbpstatic int 60954558Sbpif_ef_modevent(module_t mod, int type, void *data) 61054558Sbp{ 61154558Sbp switch ((modeventtype_t)type) { 61254558Sbp case MOD_LOAD: 61354558Sbp return ef_load(); 61454558Sbp case MOD_UNLOAD: 61554558Sbp return ef_unload(); 61654558Sbp default: 61754558Sbp break; 61854558Sbp } 61954558Sbp return 0; 62054558Sbp} 62154558Sbp 62254558Sbpstatic moduledata_t if_ef_mod = { 62354558Sbp "if_ef", if_ef_modevent, NULL 62454558Sbp}; 62554558Sbp 62654558SbpDECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE); 627