if_ef.c revision 185571
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 185571 2008-12-02 21:37:28Z bz $ 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> 42181803Sbz#include <sys/vimage.h> 4354558Sbp 4454558Sbp#include <net/ethernet.h> 4554558Sbp#include <net/if_llc.h> 4654558Sbp#include <net/if.h> 4754558Sbp#include <net/if_arp.h> 4854558Sbp#include <net/if_dl.h> 4954558Sbp#include <net/if_types.h> 5054558Sbp#include <net/netisr.h> 5154558Sbp#include <net/route.h> 5254558Sbp#include <net/bpf.h> 53185571Sbz#include <net/vnet.h> 5454558Sbp 5554558Sbp#ifdef INET 5654558Sbp#include <netinet/in.h> 5754558Sbp#include <netinet/in_var.h> 5854558Sbp#include <netinet/if_ether.h> 5954558Sbp#endif 6054558Sbp 6154558Sbp#ifdef IPX 6254558Sbp#include <netipx/ipx.h> 6354558Sbp#include <netipx/ipx_if.h> 6454558Sbp#endif 6554558Sbp 66143196Ssobomax/* If none of the supported layers is enabled explicitly enable them all */ 67143196Ssobomax#if !defined(ETHER_II) && !defined(ETHER_8023) && !defined(ETHER_8022) && \ 68143196Ssobomax !defined(ETHER_SNAP) 69143196Ssobomax#define ETHER_II 1 70143196Ssobomax#define ETHER_8023 1 71143196Ssobomax#define ETHER_8022 1 72143196Ssobomax#define ETHER_SNAP 1 73143196Ssobomax#endif 74143196Ssobomax 7554558Sbp/* internal frame types */ 7654558Sbp#define ETHER_FT_EII 0 /* Ethernet_II - default */ 7754558Sbp#define ETHER_FT_8023 1 /* 802.3 (Novell) */ 7854558Sbp#define ETHER_FT_8022 2 /* 802.2 */ 7954558Sbp#define ETHER_FT_SNAP 3 /* SNAP */ 8054558Sbp#define EF_NFT 4 /* total number of frame types */ 8154558Sbp 8254558Sbp#ifdef EF_DEBUG 8387599Sobrien#define EFDEBUG(format, args...) printf("%s: "format, __func__ ,## args) 8454558Sbp#else 8554558Sbp#define EFDEBUG(format, args...) 8654558Sbp#endif 8754558Sbp 8887599Sobrien#define EFERROR(format, args...) printf("%s: "format, __func__ ,## args) 8954558Sbp 9054558Sbpstruct efnet { 91147256Sbrooks struct ifnet *ef_ifp; 92147256Sbrooks struct ifnet *ef_pifp; 93121816Sbrooks int ef_frametype; 9454558Sbp}; 9554558Sbp 9654558Sbpstruct ef_link { 9760938Sjake SLIST_ENTRY(ef_link) el_next; 9854558Sbp struct ifnet *el_ifp; /* raw device for this clones */ 9954558Sbp struct efnet *el_units[EF_NFT]; /* our clones */ 10054558Sbp}; 10154558Sbp 10260938Sjakestatic SLIST_HEAD(ef_link_head, ef_link) efdev = {NULL}; 10354558Sbpstatic int efcount; 10454558Sbp 10554558Sbpextern int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 10659681Sbpextern int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 10766479Sbp struct sockaddr *dst, short *tp, int *hlen); 10854558Sbp 10954558Sbp/* 11054558Sbpstatic void ef_reset (struct ifnet *); 11154558Sbp*/ 11254558Sbpstatic int ef_attach(struct efnet *sc); 11354558Sbpstatic int ef_detach(struct efnet *sc); 11454558Sbpstatic void ef_init(void *); 11554558Sbpstatic int ef_ioctl(struct ifnet *, u_long, caddr_t); 11654558Sbpstatic void ef_start(struct ifnet *); 11754558Sbpstatic int ef_input(struct ifnet*, struct ether_header *, struct mbuf *); 11859681Sbpstatic int ef_output(struct ifnet *ifp, struct mbuf **mp, 11966479Sbp struct sockaddr *dst, short *tp, int *hlen); 12054558Sbp 12154558Sbpstatic int ef_load(void); 12254558Sbpstatic int ef_unload(void); 12354558Sbp 12454558Sbp/* 12554558Sbp * Install the interface, most of structure initialization done in ef_clone() 12654558Sbp */ 12754558Sbpstatic int 12854558Sbpef_attach(struct efnet *sc) 12954558Sbp{ 130147256Sbrooks struct ifnet *ifp = sc->ef_ifp; 13154558Sbp 13254558Sbp ifp->if_start = ef_start; 13354558Sbp ifp->if_watchdog = NULL; 13454558Sbp ifp->if_init = ef_init; 13554558Sbp ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 13654558Sbp ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 13754558Sbp /* 13854558Sbp * Attach the interface 13954558Sbp */ 140152315Sru ether_ifattach(ifp, IF_LLADDR(sc->ef_pifp)); 14154558Sbp 14254558Sbp ifp->if_resolvemulti = 0; 14354558Sbp ifp->if_type = IFT_XETHER; 144148887Srwatson ifp->if_drv_flags |= IFF_DRV_RUNNING; 14554558Sbp 146121816Sbrooks EFDEBUG("%s: attached\n", ifp->if_xname); 14754558Sbp return 1; 14854558Sbp} 14954558Sbp 15054558Sbp/* 15154558Sbp * This is for _testing_only_, just removes interface from interfaces list 15254558Sbp */ 15354558Sbpstatic int 15454558Sbpef_detach(struct efnet *sc) 15554558Sbp{ 156147256Sbrooks struct ifnet *ifp = sc->ef_ifp; 15754558Sbp int s; 15854558Sbp 15954558Sbp s = splimp(); 16054558Sbp 161147256Sbrooks ether_ifdetach(ifp); 162147256Sbrooks if_free(ifp); 163147256Sbrooks 16454558Sbp splx(s); 16554558Sbp return 0; 16654558Sbp} 16754558Sbp 16854558Sbpstatic void 16954558Sbpef_init(void *foo) { 17054558Sbp return; 17154558Sbp} 17254558Sbp 17354558Sbpstatic int 17454558Sbpef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 17554558Sbp{ 176121816Sbrooks struct efnet *sc = ifp->if_softc; 17754558Sbp struct ifaddr *ifa = (struct ifaddr*)data; 17854558Sbp int s, error; 17954558Sbp 180121816Sbrooks EFDEBUG("IOCTL %ld for %s\n", cmd, ifp->if_xname); 18154558Sbp error = 0; 18254558Sbp s = splimp(); 18354558Sbp switch (cmd) { 184106939Ssam case SIOCSIFFLAGS: 185106939Ssam error = 0; 186106939Ssam break; 18754558Sbp case SIOCSIFADDR: 188121816Sbrooks if (sc->ef_frametype == ETHER_FT_8023 && 18954558Sbp ifa->ifa_addr->sa_family != AF_IPX) { 19054558Sbp error = EAFNOSUPPORT; 19154558Sbp break; 19254558Sbp } 19354558Sbp ifp->if_flags |= IFF_UP; 19454558Sbp /* FALL THROUGH */ 195106939Ssam default: 19654558Sbp error = ether_ioctl(ifp, cmd, data); 19754558Sbp break; 19854558Sbp } 19954558Sbp splx(s); 20054558Sbp return error; 20154558Sbp} 20254558Sbp 20354558Sbp/* 20454558Sbp * Currently packet prepared in the ether_output(), but this can be a better 20554558Sbp * place. 20654558Sbp */ 20754558Sbpstatic void 20854558Sbpef_start(struct ifnet *ifp) 20954558Sbp{ 21054558Sbp struct efnet *sc = (struct efnet*)ifp->if_softc; 21154558Sbp struct ifnet *p; 21254558Sbp struct mbuf *m; 213130549Smlaier int error; 21454558Sbp 215148887Srwatson ifp->if_drv_flags |= IFF_DRV_OACTIVE; 216147256Sbrooks p = sc->ef_pifp; 21754558Sbp 21854558Sbp EFDEBUG("\n"); 21954558Sbp for (;;) { 22054558Sbp IF_DEQUEUE(&ifp->if_snd, m); 22154558Sbp if (m == 0) 22254558Sbp break; 223106939Ssam BPF_MTAP(ifp, m); 224130549Smlaier IFQ_HANDOFF(p, m, error); 225130549Smlaier if (error) { 22659681Sbp ifp->if_oerrors++; 22759681Sbp continue; 22854558Sbp } 22969152Sjlemon ifp->if_opackets++; 23054558Sbp } 231148887Srwatson ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 23254558Sbp return; 23354558Sbp} 23454558Sbp 23554558Sbp/* 23654558Sbp * Inline functions do not put additional overhead to procedure call or 23754558Sbp * parameter passing but simplify the code 23854558Sbp */ 23954558Sbpstatic int __inline 240111888Sjlemonef_inputEII(struct mbuf *m, struct ether_header *eh, u_short ether_type) 24154558Sbp{ 242111888Sjlemon int isr; 243111888Sjlemon 24454558Sbp switch(ether_type) { 24554558Sbp#ifdef IPX 246111888Sjlemon case ETHERTYPE_IPX: 247111888Sjlemon isr = NETISR_IPX; 24854558Sbp break; 24954558Sbp#endif 25054558Sbp#ifdef INET 251111888Sjlemon case ETHERTYPE_IP: 252154518Sandre if ((m = ip_fastforward(m)) == NULL) 253111888Sjlemon return (0); 254111888Sjlemon isr = NETISR_IP; 25554558Sbp break; 25654558Sbp 257111888Sjlemon case ETHERTYPE_ARP: 258111888Sjlemon isr = NETISR_ARP; 25954558Sbp break; 26054558Sbp#endif 261111888Sjlemon default: 262111888Sjlemon return (EPROTONOSUPPORT); 26354558Sbp } 264111888Sjlemon netisr_dispatch(isr, m); 265111888Sjlemon return (0); 26654558Sbp} 26754558Sbp 26854558Sbpstatic int __inline 26954558Sbpef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l, 270111888Sjlemon u_short ether_type) 27154558Sbp{ 272111888Sjlemon int isr; 273111888Sjlemon 27454558Sbp switch(ether_type) { 27554558Sbp#ifdef IPX 276111888Sjlemon case ETHERTYPE_IPX: 27754558Sbp m_adj(m, 8); 278111888Sjlemon isr = NETISR_IPX; 27954558Sbp break; 28054558Sbp#endif 281111888Sjlemon default: 282111888Sjlemon return (EPROTONOSUPPORT); 28354558Sbp } 284111888Sjlemon netisr_dispatch(isr, m); 285111888Sjlemon return (0); 28654558Sbp} 28754558Sbp 28854558Sbpstatic int __inline 28954558Sbpef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l, 290111888Sjlemon u_short ether_type) 29154558Sbp{ 292111888Sjlemon int isr; 293111888Sjlemon 29454558Sbp switch(ether_type) { 29554558Sbp#ifdef IPX 296111888Sjlemon case 0xe0: 29754558Sbp m_adj(m, 3); 298111888Sjlemon isr = NETISR_IPX; 29954558Sbp break; 30054558Sbp#endif 301111888Sjlemon default: 302111888Sjlemon return (EPROTONOSUPPORT); 30354558Sbp } 304111888Sjlemon netisr_dispatch(isr, m); 305111888Sjlemon return (0); 30654558Sbp} 307111888Sjlemon 30854558Sbp/* 30954558Sbp * Called from ether_input() 31054558Sbp */ 31154558Sbpstatic int 31254558Sbpef_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m) 31354558Sbp{ 31454558Sbp u_short ether_type; 31571891Sbp int ft = -1; 31654558Sbp struct efnet *efp; 31754558Sbp struct ifnet *eifp; 31854558Sbp struct llc *l; 31954558Sbp struct ef_link *efl; 320111888Sjlemon int isr; 32154558Sbp 32254558Sbp ether_type = ntohs(eh->ether_type); 323132778Skan l = NULL; 32454558Sbp if (ether_type < ETHERMTU) { 32554558Sbp l = mtod(m, struct llc*); 32654558Sbp if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) { 32754558Sbp /* 32854558Sbp * Novell's "802.3" frame 32954558Sbp */ 33054558Sbp ft = ETHER_FT_8023; 33154558Sbp } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) { 33254558Sbp /* 33354558Sbp * 802.2/SNAP 33454558Sbp */ 33554558Sbp ft = ETHER_FT_SNAP; 33654558Sbp ether_type = ntohs(l->llc_un.type_snap.ether_type); 33754558Sbp } else if (l->llc_dsap == l->llc_ssap) { 33854558Sbp /* 33954558Sbp * 802.3/802.2 34054558Sbp */ 34154558Sbp ft = ETHER_FT_8022; 34254558Sbp ether_type = l->llc_ssap; 34354558Sbp } 34454558Sbp } else 34554558Sbp ft = ETHER_FT_EII; 34654558Sbp 34754558Sbp if (ft == -1) { 34854558Sbp EFDEBUG("Unrecognised ether_type %x\n", ether_type); 34959681Sbp return EPROTONOSUPPORT; 35054558Sbp } 35154558Sbp 35254558Sbp /* 35354558Sbp * Check if interface configured for the given frame 35454558Sbp */ 35554558Sbp efp = NULL; 35654558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 35754558Sbp if (efl->el_ifp == ifp) { 35854558Sbp efp = efl->el_units[ft]; 35954558Sbp break; 36054558Sbp } 36154558Sbp } 36254558Sbp if (efp == NULL) { 36354558Sbp EFDEBUG("Can't find if for %d\n", ft); 36459681Sbp return EPROTONOSUPPORT; 36554558Sbp } 366147256Sbrooks eifp = efp->ef_ifp; 36754558Sbp if ((eifp->if_flags & IFF_UP) == 0) 36859681Sbp return EPROTONOSUPPORT; 36954558Sbp eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh); 37054558Sbp m->m_pkthdr.rcvif = eifp; 37154558Sbp 372123922Ssam BPF_MTAP2(eifp, eh, ETHER_HDR_LEN, m); 37354558Sbp /* 37454558Sbp * Now we ready to adjust mbufs and pass them to protocol intr's 37554558Sbp */ 37654558Sbp switch(ft) { 377111888Sjlemon case ETHER_FT_EII: 378111888Sjlemon return (ef_inputEII(m, eh, ether_type)); 37954558Sbp#ifdef IPX 380111888Sjlemon case ETHER_FT_8023: /* only IPX can be here */ 381111888Sjlemon isr = NETISR_IPX; 38254558Sbp break; 38354558Sbp#endif 384111888Sjlemon case ETHER_FT_SNAP: 385111888Sjlemon return (ef_inputSNAP(m, eh, l, ether_type)); 386111888Sjlemon case ETHER_FT_8022: 387111888Sjlemon return (ef_input8022(m, eh, l, ether_type)); 388111888Sjlemon default: 38954558Sbp EFDEBUG("No support for frame %d and proto %04x\n", 39054558Sbp ft, ether_type); 391111888Sjlemon return (EPROTONOSUPPORT); 39254558Sbp } 393111888Sjlemon netisr_dispatch(isr, m); 394111888Sjlemon return (0); 39554558Sbp} 39654558Sbp 39754558Sbpstatic int 39866479Sbpef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp, 39966479Sbp int *hlen) 40054558Sbp{ 401121816Sbrooks struct efnet *sc = (struct efnet*)ifp->if_softc; 40259681Sbp struct mbuf *m = *mp; 40354558Sbp u_char *cp; 40454558Sbp short type; 40554558Sbp 40654558Sbp if (ifp->if_type != IFT_XETHER) 40759681Sbp return ENETDOWN; 408121816Sbrooks switch (sc->ef_frametype) { 40954558Sbp case ETHER_FT_EII: 41054558Sbp#ifdef IPX 41154558Sbp type = htons(ETHERTYPE_IPX); 41254558Sbp#else 41359681Sbp return EPFNOSUPPORT; 41454558Sbp#endif 41554558Sbp break; 41654558Sbp case ETHER_FT_8023: 41754558Sbp type = htons(m->m_pkthdr.len); 41854558Sbp break; 41954558Sbp case ETHER_FT_8022: 420177599Sru M_PREPEND(m, ETHER_HDR_LEN + 3, M_WAIT); 42159681Sbp /* 42259681Sbp * Ensure that ethernet header and next three bytes 42359681Sbp * will fit into single mbuf 42459681Sbp */ 42559681Sbp m = m_pullup(m, ETHER_HDR_LEN + 3); 42659681Sbp if (m == NULL) { 42759681Sbp *mp = NULL; 42859681Sbp return ENOBUFS; 42959681Sbp } 43059681Sbp m_adj(m, ETHER_HDR_LEN); 43154558Sbp type = htons(m->m_pkthdr.len); 43254558Sbp cp = mtod(m, u_char *); 43354558Sbp *cp++ = 0xE0; 43454558Sbp *cp++ = 0xE0; 43554558Sbp *cp++ = 0x03; 43666479Sbp *hlen += 3; 43754558Sbp break; 43854558Sbp case ETHER_FT_SNAP: 439177599Sru M_PREPEND(m, 8, M_WAIT); 44054558Sbp type = htons(m->m_pkthdr.len); 44154558Sbp cp = mtod(m, u_char *); 44254558Sbp bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8); 44366479Sbp *hlen += 8; 44454558Sbp break; 44554558Sbp default: 44659681Sbp return EPFNOSUPPORT; 44754558Sbp } 44859681Sbp *mp = m; 44954558Sbp *tp = type; 45054558Sbp return 0; 45154558Sbp} 45254558Sbp 45354558Sbp/* 45454558Sbp * Create clone from the given interface 45554558Sbp */ 45654558Sbpstatic int 45754558Sbpef_clone(struct ef_link *efl, int ft) 45854558Sbp{ 45954558Sbp struct efnet *efp; 46054558Sbp struct ifnet *eifp; 46154558Sbp struct ifnet *ifp = efl->el_ifp; 46254558Sbp 46369781Sdwmalone efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR, 464111119Simp M_WAITOK | M_ZERO); 46554558Sbp if (efp == NULL) 46654558Sbp return ENOMEM; 467147256Sbrooks efp->ef_pifp = ifp; 468121816Sbrooks efp->ef_frametype = ft; 469147256Sbrooks eifp = efp->ef_ifp = if_alloc(IFT_ETHER); 470154318Srwatson if (eifp == NULL) { 471154318Srwatson free(efp, M_IFADDR); 472147256Sbrooks return (ENOSPC); 473154318Srwatson } 474121816Sbrooks snprintf(eifp->if_xname, IFNAMSIZ, 475121816Sbrooks "%sf%d", ifp->if_xname, efp->ef_frametype); 476121816Sbrooks eifp->if_dname = "ef"; 477121816Sbrooks eifp->if_dunit = IF_DUNIT_NONE; 47854558Sbp eifp->if_softc = efp; 47954558Sbp if (ifp->if_ioctl) 48054558Sbp eifp->if_ioctl = ef_ioctl; 48154558Sbp efl->el_units[ft] = efp; 48254558Sbp return 0; 48354558Sbp} 48454558Sbp 48554558Sbpstatic int 48654558Sbpef_load(void) 48754558Sbp{ 488183550Szec VNET_ITERATOR_DECL(vnet_iter); 48954558Sbp struct ifnet *ifp; 49054558Sbp struct efnet *efp; 491154317Srwatson struct ef_link *efl = NULL, *efl_temp; 49254558Sbp int error = 0, d; 49354558Sbp 494183550Szec VNET_LIST_RLOCK(); 495183550Szec VNET_FOREACH(vnet_iter) { 496183550Szec CURVNET_SET(vnet_iter); 497183550Szec INIT_VNET_NET(vnet_iter); 498183550Szec IFNET_RLOCK(); 499183550Szec TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 500183550Szec if (ifp->if_type != IFT_ETHER) continue; 501183550Szec EFDEBUG("Found interface %s\n", ifp->if_xname); 502183550Szec efl = (struct ef_link*)malloc(sizeof(struct ef_link), 503183550Szec M_IFADDR, M_WAITOK | M_ZERO); 504183550Szec if (efl == NULL) { 505183550Szec error = ENOMEM; 506183550Szec break; 507183550Szec } 50854558Sbp 509183550Szec efl->el_ifp = ifp; 51054558Sbp#ifdef ETHER_II 511183550Szec error = ef_clone(efl, ETHER_FT_EII); 512183550Szec if (error) break; 51354558Sbp#endif 51454558Sbp#ifdef ETHER_8023 515183550Szec error = ef_clone(efl, ETHER_FT_8023); 516183550Szec if (error) break; 51754558Sbp#endif 51854558Sbp#ifdef ETHER_8022 519183550Szec error = ef_clone(efl, ETHER_FT_8022); 520183550Szec if (error) break; 52154558Sbp#endif 52254558Sbp#ifdef ETHER_SNAP 523183550Szec error = ef_clone(efl, ETHER_FT_SNAP); 524183550Szec if (error) break; 52554558Sbp#endif 526183550Szec efcount++; 527183550Szec SLIST_INSERT_HEAD(&efdev, efl, el_next); 528183550Szec } 529183550Szec IFNET_RUNLOCK(); 530183550Szec CURVNET_RESTORE(); 53154558Sbp } 532183550Szec VNET_LIST_RUNLOCK(); 53354558Sbp if (error) { 53454558Sbp if (efl) 53554558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 536154317Srwatson SLIST_FOREACH_SAFE(efl, &efdev, el_next, efl_temp) { 53754558Sbp for (d = 0; d < EF_NFT; d++) 538147256Sbrooks if (efl->el_units[d]) { 539147256Sbrooks if (efl->el_units[d]->ef_pifp != NULL) 540147256Sbrooks if_free(efl->el_units[d]->ef_pifp); 54154558Sbp free(efl->el_units[d], M_IFADDR); 542147256Sbrooks } 54354558Sbp free(efl, M_IFADDR); 54454558Sbp } 54554558Sbp return error; 54654558Sbp } 54754558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 54854558Sbp for (d = 0; d < EF_NFT; d++) { 54954558Sbp efp = efl->el_units[d]; 55054558Sbp if (efp) 55154558Sbp ef_attach(efp); 55254558Sbp } 55354558Sbp } 55454558Sbp ef_inputp = ef_input; 55554558Sbp ef_outputp = ef_output; 55654558Sbp EFDEBUG("Loaded\n"); 55754558Sbp return 0; 55854558Sbp} 55954558Sbp 56054558Sbpstatic int 56154558Sbpef_unload(void) 56254558Sbp{ 56354558Sbp struct efnet *efp; 56454558Sbp struct ef_link *efl; 56554558Sbp int d; 56654558Sbp 56754558Sbp ef_inputp = NULL; 56854558Sbp ef_outputp = NULL; 56954558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 57054558Sbp for (d = 0; d < EF_NFT; d++) { 57154558Sbp efp = efl->el_units[d]; 57254558Sbp if (efp) { 57354558Sbp ef_detach(efp); 57454558Sbp } 57554558Sbp } 57654558Sbp } 57754558Sbp EFDEBUG("Unloaded\n"); 57854558Sbp return 0; 57954558Sbp} 58054558Sbp 58154558Sbpstatic int 58254558Sbpif_ef_modevent(module_t mod, int type, void *data) 58354558Sbp{ 58454558Sbp switch ((modeventtype_t)type) { 58554558Sbp case MOD_LOAD: 58654558Sbp return ef_load(); 58754558Sbp case MOD_UNLOAD: 58854558Sbp return ef_unload(); 58954558Sbp default: 590132199Sphk return EOPNOTSUPP; 59154558Sbp } 59254558Sbp return 0; 59354558Sbp} 59454558Sbp 59554558Sbpstatic moduledata_t if_ef_mod = { 59654558Sbp "if_ef", if_ef_modevent, NULL 59754558Sbp}; 59854558Sbp 59954558SbpDECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE); 600