if_ef.c revision 183550
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 183550 2008-10-02 15:37:58Z zec $ 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> 5354558Sbp 5454558Sbp#ifdef INET 5554558Sbp#include <netinet/in.h> 5654558Sbp#include <netinet/in_var.h> 5754558Sbp#include <netinet/if_ether.h> 5854558Sbp#endif 5954558Sbp 6054558Sbp#ifdef IPX 6154558Sbp#include <netipx/ipx.h> 6254558Sbp#include <netipx/ipx_if.h> 6354558Sbp#endif 6454558Sbp 65143196Ssobomax/* If none of the supported layers is enabled explicitly enable them all */ 66143196Ssobomax#if !defined(ETHER_II) && !defined(ETHER_8023) && !defined(ETHER_8022) && \ 67143196Ssobomax !defined(ETHER_SNAP) 68143196Ssobomax#define ETHER_II 1 69143196Ssobomax#define ETHER_8023 1 70143196Ssobomax#define ETHER_8022 1 71143196Ssobomax#define ETHER_SNAP 1 72143196Ssobomax#endif 73143196Ssobomax 7454558Sbp/* internal frame types */ 7554558Sbp#define ETHER_FT_EII 0 /* Ethernet_II - default */ 7654558Sbp#define ETHER_FT_8023 1 /* 802.3 (Novell) */ 7754558Sbp#define ETHER_FT_8022 2 /* 802.2 */ 7854558Sbp#define ETHER_FT_SNAP 3 /* SNAP */ 7954558Sbp#define EF_NFT 4 /* total number of frame types */ 8054558Sbp 8154558Sbp#ifdef EF_DEBUG 8287599Sobrien#define EFDEBUG(format, args...) printf("%s: "format, __func__ ,## args) 8354558Sbp#else 8454558Sbp#define EFDEBUG(format, args...) 8554558Sbp#endif 8654558Sbp 8787599Sobrien#define EFERROR(format, args...) printf("%s: "format, __func__ ,## args) 8854558Sbp 8954558Sbpstruct efnet { 90147256Sbrooks struct ifnet *ef_ifp; 91147256Sbrooks struct ifnet *ef_pifp; 92121816Sbrooks int ef_frametype; 9354558Sbp}; 9454558Sbp 9554558Sbpstruct ef_link { 9660938Sjake SLIST_ENTRY(ef_link) el_next; 9754558Sbp struct ifnet *el_ifp; /* raw device for this clones */ 9854558Sbp struct efnet *el_units[EF_NFT]; /* our clones */ 9954558Sbp}; 10054558Sbp 10160938Sjakestatic SLIST_HEAD(ef_link_head, ef_link) efdev = {NULL}; 10254558Sbpstatic int efcount; 10354558Sbp 10454558Sbpextern int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 10559681Sbpextern int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 10666479Sbp struct sockaddr *dst, short *tp, int *hlen); 10754558Sbp 10854558Sbp/* 10954558Sbpstatic void ef_reset (struct ifnet *); 11054558Sbp*/ 11154558Sbpstatic int ef_attach(struct efnet *sc); 11254558Sbpstatic int ef_detach(struct efnet *sc); 11354558Sbpstatic void ef_init(void *); 11454558Sbpstatic int ef_ioctl(struct ifnet *, u_long, caddr_t); 11554558Sbpstatic void ef_start(struct ifnet *); 11654558Sbpstatic int ef_input(struct ifnet*, struct ether_header *, struct mbuf *); 11759681Sbpstatic int ef_output(struct ifnet *ifp, struct mbuf **mp, 11866479Sbp struct sockaddr *dst, short *tp, int *hlen); 11954558Sbp 12054558Sbpstatic int ef_load(void); 12154558Sbpstatic int ef_unload(void); 12254558Sbp 12354558Sbp/* 12454558Sbp * Install the interface, most of structure initialization done in ef_clone() 12554558Sbp */ 12654558Sbpstatic int 12754558Sbpef_attach(struct efnet *sc) 12854558Sbp{ 129147256Sbrooks struct ifnet *ifp = sc->ef_ifp; 13054558Sbp 13154558Sbp ifp->if_start = ef_start; 13254558Sbp ifp->if_watchdog = NULL; 13354558Sbp ifp->if_init = ef_init; 13454558Sbp ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 13554558Sbp ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 13654558Sbp /* 13754558Sbp * Attach the interface 13854558Sbp */ 139152315Sru ether_ifattach(ifp, IF_LLADDR(sc->ef_pifp)); 14054558Sbp 14154558Sbp ifp->if_resolvemulti = 0; 14254558Sbp ifp->if_type = IFT_XETHER; 143148887Srwatson ifp->if_drv_flags |= IFF_DRV_RUNNING; 14454558Sbp 145121816Sbrooks EFDEBUG("%s: attached\n", ifp->if_xname); 14654558Sbp return 1; 14754558Sbp} 14854558Sbp 14954558Sbp/* 15054558Sbp * This is for _testing_only_, just removes interface from interfaces list 15154558Sbp */ 15254558Sbpstatic int 15354558Sbpef_detach(struct efnet *sc) 15454558Sbp{ 155147256Sbrooks struct ifnet *ifp = sc->ef_ifp; 15654558Sbp int s; 15754558Sbp 15854558Sbp s = splimp(); 15954558Sbp 160147256Sbrooks ether_ifdetach(ifp); 161147256Sbrooks if_free(ifp); 162147256Sbrooks 16354558Sbp splx(s); 16454558Sbp return 0; 16554558Sbp} 16654558Sbp 16754558Sbpstatic void 16854558Sbpef_init(void *foo) { 16954558Sbp return; 17054558Sbp} 17154558Sbp 17254558Sbpstatic int 17354558Sbpef_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 17454558Sbp{ 175121816Sbrooks struct efnet *sc = ifp->if_softc; 17654558Sbp struct ifaddr *ifa = (struct ifaddr*)data; 17754558Sbp int s, error; 17854558Sbp 179121816Sbrooks EFDEBUG("IOCTL %ld for %s\n", cmd, ifp->if_xname); 18054558Sbp error = 0; 18154558Sbp s = splimp(); 18254558Sbp switch (cmd) { 183106939Ssam case SIOCSIFFLAGS: 184106939Ssam error = 0; 185106939Ssam break; 18654558Sbp case SIOCSIFADDR: 187121816Sbrooks if (sc->ef_frametype == ETHER_FT_8023 && 18854558Sbp ifa->ifa_addr->sa_family != AF_IPX) { 18954558Sbp error = EAFNOSUPPORT; 19054558Sbp break; 19154558Sbp } 19254558Sbp ifp->if_flags |= IFF_UP; 19354558Sbp /* FALL THROUGH */ 194106939Ssam default: 19554558Sbp error = ether_ioctl(ifp, cmd, data); 19654558Sbp break; 19754558Sbp } 19854558Sbp splx(s); 19954558Sbp return error; 20054558Sbp} 20154558Sbp 20254558Sbp/* 20354558Sbp * Currently packet prepared in the ether_output(), but this can be a better 20454558Sbp * place. 20554558Sbp */ 20654558Sbpstatic void 20754558Sbpef_start(struct ifnet *ifp) 20854558Sbp{ 20954558Sbp struct efnet *sc = (struct efnet*)ifp->if_softc; 21054558Sbp struct ifnet *p; 21154558Sbp struct mbuf *m; 212130549Smlaier int error; 21354558Sbp 214148887Srwatson ifp->if_drv_flags |= IFF_DRV_OACTIVE; 215147256Sbrooks p = sc->ef_pifp; 21654558Sbp 21754558Sbp EFDEBUG("\n"); 21854558Sbp for (;;) { 21954558Sbp IF_DEQUEUE(&ifp->if_snd, m); 22054558Sbp if (m == 0) 22154558Sbp break; 222106939Ssam BPF_MTAP(ifp, m); 223130549Smlaier IFQ_HANDOFF(p, m, error); 224130549Smlaier if (error) { 22559681Sbp ifp->if_oerrors++; 22659681Sbp continue; 22754558Sbp } 22869152Sjlemon ifp->if_opackets++; 22954558Sbp } 230148887Srwatson ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 23154558Sbp return; 23254558Sbp} 23354558Sbp 23454558Sbp/* 23554558Sbp * Inline functions do not put additional overhead to procedure call or 23654558Sbp * parameter passing but simplify the code 23754558Sbp */ 23854558Sbpstatic int __inline 239111888Sjlemonef_inputEII(struct mbuf *m, struct ether_header *eh, u_short ether_type) 24054558Sbp{ 241111888Sjlemon int isr; 242111888Sjlemon 24354558Sbp switch(ether_type) { 24454558Sbp#ifdef IPX 245111888Sjlemon case ETHERTYPE_IPX: 246111888Sjlemon isr = NETISR_IPX; 24754558Sbp break; 24854558Sbp#endif 24954558Sbp#ifdef INET 250111888Sjlemon case ETHERTYPE_IP: 251154518Sandre if ((m = ip_fastforward(m)) == NULL) 252111888Sjlemon return (0); 253111888Sjlemon isr = NETISR_IP; 25454558Sbp break; 25554558Sbp 256111888Sjlemon case ETHERTYPE_ARP: 257111888Sjlemon isr = NETISR_ARP; 25854558Sbp break; 25954558Sbp#endif 260111888Sjlemon default: 261111888Sjlemon return (EPROTONOSUPPORT); 26254558Sbp } 263111888Sjlemon netisr_dispatch(isr, m); 264111888Sjlemon return (0); 26554558Sbp} 26654558Sbp 26754558Sbpstatic int __inline 26854558Sbpef_inputSNAP(struct mbuf *m, struct ether_header *eh, struct llc* l, 269111888Sjlemon u_short ether_type) 27054558Sbp{ 271111888Sjlemon int isr; 272111888Sjlemon 27354558Sbp switch(ether_type) { 27454558Sbp#ifdef IPX 275111888Sjlemon case ETHERTYPE_IPX: 27654558Sbp m_adj(m, 8); 277111888Sjlemon isr = NETISR_IPX; 27854558Sbp break; 27954558Sbp#endif 280111888Sjlemon default: 281111888Sjlemon return (EPROTONOSUPPORT); 28254558Sbp } 283111888Sjlemon netisr_dispatch(isr, m); 284111888Sjlemon return (0); 28554558Sbp} 28654558Sbp 28754558Sbpstatic int __inline 28854558Sbpef_input8022(struct mbuf *m, struct ether_header *eh, struct llc* l, 289111888Sjlemon u_short ether_type) 29054558Sbp{ 291111888Sjlemon int isr; 292111888Sjlemon 29354558Sbp switch(ether_type) { 29454558Sbp#ifdef IPX 295111888Sjlemon case 0xe0: 29654558Sbp m_adj(m, 3); 297111888Sjlemon isr = NETISR_IPX; 29854558Sbp break; 29954558Sbp#endif 300111888Sjlemon default: 301111888Sjlemon return (EPROTONOSUPPORT); 30254558Sbp } 303111888Sjlemon netisr_dispatch(isr, m); 304111888Sjlemon return (0); 30554558Sbp} 306111888Sjlemon 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 efnet *efp; 31654558Sbp struct ifnet *eifp; 31754558Sbp struct llc *l; 31854558Sbp struct ef_link *efl; 319111888Sjlemon int isr; 32054558Sbp 32154558Sbp ether_type = ntohs(eh->ether_type); 322132778Skan l = NULL; 32354558Sbp if (ether_type < ETHERMTU) { 32454558Sbp l = mtod(m, struct llc*); 32554558Sbp if (l->llc_dsap == 0xff && l->llc_ssap == 0xff) { 32654558Sbp /* 32754558Sbp * Novell's "802.3" frame 32854558Sbp */ 32954558Sbp ft = ETHER_FT_8023; 33054558Sbp } else if (l->llc_dsap == 0xaa && l->llc_ssap == 0xaa) { 33154558Sbp /* 33254558Sbp * 802.2/SNAP 33354558Sbp */ 33454558Sbp ft = ETHER_FT_SNAP; 33554558Sbp ether_type = ntohs(l->llc_un.type_snap.ether_type); 33654558Sbp } else if (l->llc_dsap == l->llc_ssap) { 33754558Sbp /* 33854558Sbp * 802.3/802.2 33954558Sbp */ 34054558Sbp ft = ETHER_FT_8022; 34154558Sbp ether_type = l->llc_ssap; 34254558Sbp } 34354558Sbp } else 34454558Sbp ft = ETHER_FT_EII; 34554558Sbp 34654558Sbp if (ft == -1) { 34754558Sbp EFDEBUG("Unrecognised ether_type %x\n", ether_type); 34859681Sbp return EPROTONOSUPPORT; 34954558Sbp } 35054558Sbp 35154558Sbp /* 35254558Sbp * Check if interface configured for the given frame 35354558Sbp */ 35454558Sbp efp = NULL; 35554558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 35654558Sbp if (efl->el_ifp == ifp) { 35754558Sbp efp = efl->el_units[ft]; 35854558Sbp break; 35954558Sbp } 36054558Sbp } 36154558Sbp if (efp == NULL) { 36254558Sbp EFDEBUG("Can't find if for %d\n", ft); 36359681Sbp return EPROTONOSUPPORT; 36454558Sbp } 365147256Sbrooks eifp = efp->ef_ifp; 36654558Sbp if ((eifp->if_flags & IFF_UP) == 0) 36759681Sbp return EPROTONOSUPPORT; 36854558Sbp eifp->if_ibytes += m->m_pkthdr.len + sizeof (*eh); 36954558Sbp m->m_pkthdr.rcvif = eifp; 37054558Sbp 371123922Ssam BPF_MTAP2(eifp, eh, ETHER_HDR_LEN, m); 37254558Sbp /* 37354558Sbp * Now we ready to adjust mbufs and pass them to protocol intr's 37454558Sbp */ 37554558Sbp switch(ft) { 376111888Sjlemon case ETHER_FT_EII: 377111888Sjlemon return (ef_inputEII(m, eh, ether_type)); 37854558Sbp#ifdef IPX 379111888Sjlemon case ETHER_FT_8023: /* only IPX can be here */ 380111888Sjlemon isr = NETISR_IPX; 38154558Sbp break; 38254558Sbp#endif 383111888Sjlemon case ETHER_FT_SNAP: 384111888Sjlemon return (ef_inputSNAP(m, eh, l, ether_type)); 385111888Sjlemon case ETHER_FT_8022: 386111888Sjlemon return (ef_input8022(m, eh, l, ether_type)); 387111888Sjlemon default: 38854558Sbp EFDEBUG("No support for frame %d and proto %04x\n", 38954558Sbp ft, ether_type); 390111888Sjlemon return (EPROTONOSUPPORT); 39154558Sbp } 392111888Sjlemon netisr_dispatch(isr, m); 393111888Sjlemon return (0); 39454558Sbp} 39554558Sbp 39654558Sbpstatic int 39766479Sbpef_output(struct ifnet *ifp, struct mbuf **mp, struct sockaddr *dst, short *tp, 39866479Sbp int *hlen) 39954558Sbp{ 400121816Sbrooks struct efnet *sc = (struct efnet*)ifp->if_softc; 40159681Sbp struct mbuf *m = *mp; 40254558Sbp u_char *cp; 40354558Sbp short type; 40454558Sbp 40554558Sbp if (ifp->if_type != IFT_XETHER) 40659681Sbp return ENETDOWN; 407121816Sbrooks switch (sc->ef_frametype) { 40854558Sbp case ETHER_FT_EII: 40954558Sbp#ifdef IPX 41054558Sbp type = htons(ETHERTYPE_IPX); 41154558Sbp#else 41259681Sbp return EPFNOSUPPORT; 41354558Sbp#endif 41454558Sbp break; 41554558Sbp case ETHER_FT_8023: 41654558Sbp type = htons(m->m_pkthdr.len); 41754558Sbp break; 41854558Sbp case ETHER_FT_8022: 419177599Sru M_PREPEND(m, ETHER_HDR_LEN + 3, M_WAIT); 42059681Sbp /* 42159681Sbp * Ensure that ethernet header and next three bytes 42259681Sbp * will fit into single mbuf 42359681Sbp */ 42459681Sbp m = m_pullup(m, ETHER_HDR_LEN + 3); 42559681Sbp if (m == NULL) { 42659681Sbp *mp = NULL; 42759681Sbp return ENOBUFS; 42859681Sbp } 42959681Sbp m_adj(m, ETHER_HDR_LEN); 43054558Sbp type = htons(m->m_pkthdr.len); 43154558Sbp cp = mtod(m, u_char *); 43254558Sbp *cp++ = 0xE0; 43354558Sbp *cp++ = 0xE0; 43454558Sbp *cp++ = 0x03; 43566479Sbp *hlen += 3; 43654558Sbp break; 43754558Sbp case ETHER_FT_SNAP: 438177599Sru M_PREPEND(m, 8, M_WAIT); 43954558Sbp type = htons(m->m_pkthdr.len); 44054558Sbp cp = mtod(m, u_char *); 44154558Sbp bcopy("\xAA\xAA\x03\x00\x00\x00\x81\x37", cp, 8); 44266479Sbp *hlen += 8; 44354558Sbp break; 44454558Sbp default: 44559681Sbp return EPFNOSUPPORT; 44654558Sbp } 44759681Sbp *mp = m; 44854558Sbp *tp = type; 44954558Sbp return 0; 45054558Sbp} 45154558Sbp 45254558Sbp/* 45354558Sbp * Create clone from the given interface 45454558Sbp */ 45554558Sbpstatic int 45654558Sbpef_clone(struct ef_link *efl, int ft) 45754558Sbp{ 45854558Sbp struct efnet *efp; 45954558Sbp struct ifnet *eifp; 46054558Sbp struct ifnet *ifp = efl->el_ifp; 46154558Sbp 46269781Sdwmalone efp = (struct efnet*)malloc(sizeof(struct efnet), M_IFADDR, 463111119Simp M_WAITOK | M_ZERO); 46454558Sbp if (efp == NULL) 46554558Sbp return ENOMEM; 466147256Sbrooks efp->ef_pifp = ifp; 467121816Sbrooks efp->ef_frametype = ft; 468147256Sbrooks eifp = efp->ef_ifp = if_alloc(IFT_ETHER); 469154318Srwatson if (eifp == NULL) { 470154318Srwatson free(efp, M_IFADDR); 471147256Sbrooks return (ENOSPC); 472154318Srwatson } 473121816Sbrooks snprintf(eifp->if_xname, IFNAMSIZ, 474121816Sbrooks "%sf%d", ifp->if_xname, efp->ef_frametype); 475121816Sbrooks eifp->if_dname = "ef"; 476121816Sbrooks eifp->if_dunit = IF_DUNIT_NONE; 47754558Sbp eifp->if_softc = efp; 47854558Sbp if (ifp->if_ioctl) 47954558Sbp eifp->if_ioctl = ef_ioctl; 48054558Sbp efl->el_units[ft] = efp; 48154558Sbp return 0; 48254558Sbp} 48354558Sbp 48454558Sbpstatic int 48554558Sbpef_load(void) 48654558Sbp{ 487183550Szec VNET_ITERATOR_DECL(vnet_iter); 48854558Sbp struct ifnet *ifp; 48954558Sbp struct efnet *efp; 490154317Srwatson struct ef_link *efl = NULL, *efl_temp; 49154558Sbp int error = 0, d; 49254558Sbp 493183550Szec VNET_LIST_RLOCK(); 494183550Szec VNET_FOREACH(vnet_iter) { 495183550Szec CURVNET_SET(vnet_iter); 496183550Szec INIT_VNET_NET(vnet_iter); 497183550Szec IFNET_RLOCK(); 498183550Szec TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 499183550Szec if (ifp->if_type != IFT_ETHER) continue; 500183550Szec EFDEBUG("Found interface %s\n", ifp->if_xname); 501183550Szec efl = (struct ef_link*)malloc(sizeof(struct ef_link), 502183550Szec M_IFADDR, M_WAITOK | M_ZERO); 503183550Szec if (efl == NULL) { 504183550Szec error = ENOMEM; 505183550Szec break; 506183550Szec } 50754558Sbp 508183550Szec efl->el_ifp = ifp; 50954558Sbp#ifdef ETHER_II 510183550Szec error = ef_clone(efl, ETHER_FT_EII); 511183550Szec if (error) break; 51254558Sbp#endif 51354558Sbp#ifdef ETHER_8023 514183550Szec error = ef_clone(efl, ETHER_FT_8023); 515183550Szec if (error) break; 51654558Sbp#endif 51754558Sbp#ifdef ETHER_8022 518183550Szec error = ef_clone(efl, ETHER_FT_8022); 519183550Szec if (error) break; 52054558Sbp#endif 52154558Sbp#ifdef ETHER_SNAP 522183550Szec error = ef_clone(efl, ETHER_FT_SNAP); 523183550Szec if (error) break; 52454558Sbp#endif 525183550Szec efcount++; 526183550Szec SLIST_INSERT_HEAD(&efdev, efl, el_next); 527183550Szec } 528183550Szec IFNET_RUNLOCK(); 529183550Szec CURVNET_RESTORE(); 53054558Sbp } 531183550Szec VNET_LIST_RUNLOCK(); 53254558Sbp if (error) { 53354558Sbp if (efl) 53454558Sbp SLIST_INSERT_HEAD(&efdev, efl, el_next); 535154317Srwatson SLIST_FOREACH_SAFE(efl, &efdev, el_next, efl_temp) { 53654558Sbp for (d = 0; d < EF_NFT; d++) 537147256Sbrooks if (efl->el_units[d]) { 538147256Sbrooks if (efl->el_units[d]->ef_pifp != NULL) 539147256Sbrooks if_free(efl->el_units[d]->ef_pifp); 54054558Sbp free(efl->el_units[d], M_IFADDR); 541147256Sbrooks } 54254558Sbp free(efl, M_IFADDR); 54354558Sbp } 54454558Sbp return error; 54554558Sbp } 54654558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 54754558Sbp for (d = 0; d < EF_NFT; d++) { 54854558Sbp efp = efl->el_units[d]; 54954558Sbp if (efp) 55054558Sbp ef_attach(efp); 55154558Sbp } 55254558Sbp } 55354558Sbp ef_inputp = ef_input; 55454558Sbp ef_outputp = ef_output; 55554558Sbp EFDEBUG("Loaded\n"); 55654558Sbp return 0; 55754558Sbp} 55854558Sbp 55954558Sbpstatic int 56054558Sbpef_unload(void) 56154558Sbp{ 56254558Sbp struct efnet *efp; 56354558Sbp struct ef_link *efl; 56454558Sbp int d; 56554558Sbp 56654558Sbp ef_inputp = NULL; 56754558Sbp ef_outputp = NULL; 56854558Sbp SLIST_FOREACH(efl, &efdev, el_next) { 56954558Sbp for (d = 0; d < EF_NFT; d++) { 57054558Sbp efp = efl->el_units[d]; 57154558Sbp if (efp) { 57254558Sbp ef_detach(efp); 57354558Sbp } 57454558Sbp } 57554558Sbp } 57654558Sbp EFDEBUG("Unloaded\n"); 57754558Sbp return 0; 57854558Sbp} 57954558Sbp 58054558Sbpstatic int 58154558Sbpif_ef_modevent(module_t mod, int type, void *data) 58254558Sbp{ 58354558Sbp switch ((modeventtype_t)type) { 58454558Sbp case MOD_LOAD: 58554558Sbp return ef_load(); 58654558Sbp case MOD_UNLOAD: 58754558Sbp return ef_unload(); 58854558Sbp default: 589132199Sphk return EOPNOTSUPP; 59054558Sbp } 59154558Sbp return 0; 59254558Sbp} 59354558Sbp 59454558Sbpstatic moduledata_t if_ef_mod = { 59554558Sbp "if_ef", if_ef_modevent, NULL 59654558Sbp}; 59754558Sbp 59854558SbpDECLARE_MODULE(if_ef, if_ef_mod, SI_SUB_PSEUDO, SI_ORDER_MIDDLE); 599