/* $NetBSD: ieee80211_netbsd.c,v 1.29 2017/01/14 16:34:44 maya Exp $ */ /*- * Copyright (c) 2003-2005 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #ifdef __FreeBSD__ __FBSDID("$FreeBSD: src/sys/net80211/ieee80211_freebsd.c,v 1.8 2005/08/08 18:46:35 sam Exp $"); #else __KERNEL_RCSID(0, "$NetBSD: ieee80211_netbsd.c,v 1.29 2017/01/14 16:34:44 maya Exp $"); #endif /* * IEEE 802.11 support (NetBSD-specific code) */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define LOGICALLY_EQUAL(x, y) (!(x) == !(y)) static void ieee80211_sysctl_fill_node(struct ieee80211_node *, struct ieee80211_node_sysctl *, int, const struct ieee80211_channel *, uint32_t); static struct ieee80211_node *ieee80211_node_walknext( struct ieee80211_node_walk *); static struct ieee80211_node *ieee80211_node_walkfirst( struct ieee80211_node_walk *, u_short); static int ieee80211_sysctl_node(SYSCTLFN_ARGS); static void ieee80211_sysctl_setup(void); #ifdef IEEE80211_DEBUG int ieee80211_debug = 0; #endif typedef void (*ieee80211_setup_func)(void); __link_set_decl(ieee80211_funcs, ieee80211_setup_func); static int ieee80211_init0(void) { ieee80211_setup_func * const *ieee80211_setup, f; ieee80211_sysctl_setup(); if (max_linkhdr < ALIGN(sizeof(struct ieee80211_qosframe_addr4))) { max_linkhdr = ALIGN(sizeof(struct ieee80211_qosframe_addr4)); } __link_set_foreach(ieee80211_setup, ieee80211_funcs) { f = (void*)*ieee80211_setup; (*f)(); } return 0; } void ieee80211_init(void) { static ONCE_DECL(ieee80211_init_once); RUN_ONCE(&ieee80211_init_once, ieee80211_init0); } static int ieee80211_sysctl_inact(SYSCTLFN_ARGS) { int error, t; struct sysctlnode node; node = *rnode; /* sysctl_lookup copies the product from t. Then, it * copies the new value onto t. */ t = *(int*)rnode->sysctl_data * IEEE80211_INACT_WAIT; node.sysctl_data = &t; error = sysctl_lookup(SYSCTLFN_CALL(&node)); if (error || newp == NULL) return (error); /* The new value was in seconds. Convert to inactivity-wait * intervals. There are IEEE80211_INACT_WAIT seconds per * interval. */ *(int*)rnode->sysctl_data = t / IEEE80211_INACT_WAIT; return (0); } static int ieee80211_sysctl_parent(SYSCTLFN_ARGS) { struct ieee80211com *ic; char pname[IFNAMSIZ]; struct sysctlnode node; node = *rnode; ic = node.sysctl_data; strlcpy(pname, ic->ic_ifp->if_xname, IFNAMSIZ); node.sysctl_data = pname; return sysctl_lookup(SYSCTLFN_CALL(&node)); } /* * Create or get top of sysctl tree net.link.ieee80211. */ static const struct sysctlnode * ieee80211_sysctl_treetop(struct sysctllog **log) { int rc; const struct sysctlnode *rnode; if ((rc = sysctl_createv(log, 0, NULL, &rnode, CTLFLAG_PERMANENT, CTLTYPE_NODE, "link", "link-layer statistics and controls", NULL, 0, NULL, 0, CTL_NET, PF_LINK, CTL_EOL)) != 0) goto err; if ((rc = sysctl_createv(log, 0, &rnode, &rnode, CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee80211", "IEEE 802.11 WLAN statistics and controls", NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; return rnode; err: printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); return NULL; } void ieee80211_sysctl_attach(struct ieee80211com *ic) { int rc; const struct sysctlnode *cnode, *rnode; char num[sizeof("vap") + 14]; /* sufficient for 32 bits */ if ((rnode = ieee80211_sysctl_treetop(NULL)) == NULL) return; snprintf(num, sizeof(num), "vap%u", ic->ic_vap); if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &rnode, CTLFLAG_PERMANENT, CTLTYPE_NODE, num, SYSCTL_DESCR("virtual AP"), NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; /* control debugging printfs */ if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READONLY, CTLTYPE_STRING, "parent", SYSCTL_DESCR("parent device"), ieee80211_sysctl_parent, 0, (void *)ic, IFNAMSIZ, CTL_CREATE, CTL_EOL)) != 0) goto err; #ifdef IEEE80211_DEBUG /* control debugging printfs */ if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "debug", SYSCTL_DESCR("control debugging printfs"), NULL, ieee80211_debug, &ic->ic_debug, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; #endif /* XXX inherit from tunables */ if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "inact_run", SYSCTL_DESCR("station inactivity timeout (sec)"), ieee80211_sysctl_inact, 0, &ic->ic_inact_run, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "inact_probe", SYSCTL_DESCR("station inactivity probe timeout (sec)"), ieee80211_sysctl_inact, 0, &ic->ic_inact_probe, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "inact_auth", SYSCTL_DESCR("station authentication timeout (sec)"), ieee80211_sysctl_inact, 0, &ic->ic_inact_auth, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "inact_init", SYSCTL_DESCR("station initial state timeout (sec)"), ieee80211_sysctl_inact, 0, &ic->ic_inact_init, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "driver_caps", SYSCTL_DESCR("driver capabilities"), NULL, 0, &ic->ic_caps, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "bmiss_max", SYSCTL_DESCR("consecutive beacon misses before scanning"), NULL, 0, &ic->ic_bmiss_max, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; return; err: printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); } void ieee80211_sysctl_detach(struct ieee80211com *ic) { sysctl_teardown(&ic->ic_sysctllog); } /* * Pointers for testing: * * If there are no interfaces, or else no 802.11 interfaces, * ieee80211_node_walkfirst must return NULL. * * If there is any single 802.11 interface, ieee80211_node_walkfirst * must not return NULL. */ static struct ieee80211_node * ieee80211_node_walkfirst(struct ieee80211_node_walk *nw, u_short if_index) { (void)memset(nw, 0, sizeof(*nw)); nw->nw_ifindex = if_index; LIST_FOREACH(nw->nw_ic, &ieee80211com_head, ic_list) { if (if_index != 0 && nw->nw_ic->ic_ifp->if_index != if_index) continue; if (!TAILQ_EMPTY(&nw->nw_ic->ic_sta.nt_node)) nw->nw_nt = &nw->nw_ic->ic_sta; else if (!TAILQ_EMPTY(&nw->nw_ic->ic_scan.nt_node)) nw->nw_nt = &nw->nw_ic->ic_scan; else if (nw->nw_ic->ic_bss == NULL) continue; break; } if (nw->nw_ic == NULL) return NULL; if (nw->nw_nt == NULL) nw->nw_ni = nw->nw_ic->ic_bss; else nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); return nw->nw_ni; } static struct ieee80211_node * ieee80211_node_walknext(struct ieee80211_node_walk *nw) { if (nw->nw_nt != NULL) nw->nw_ni = TAILQ_NEXT(nw->nw_ni, ni_list); else nw->nw_ni = NULL; while (nw->nw_ni == NULL) { if (nw->nw_nt == &nw->nw_ic->ic_sta) { nw->nw_nt = &nw->nw_ic->ic_scan; nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); continue; } else if (nw->nw_nt == &nw->nw_ic->ic_scan) { nw->nw_nt = NULL; nw->nw_ni = nw->nw_ic->ic_bss; continue; } KASSERT(nw->nw_nt == NULL); if (nw->nw_ifindex != 0) return NULL; nw->nw_ic = LIST_NEXT(nw->nw_ic, ic_list); if (nw->nw_ic == NULL) return NULL; nw->nw_nt = &nw->nw_ic->ic_sta; nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); } return nw->nw_ni; } static void ieee80211_sysctl_fill_node(struct ieee80211_node *ni, struct ieee80211_node_sysctl *ns, int ifindex, const struct ieee80211_channel *chan0, uint32_t flags) { ns->ns_ifindex = ifindex; ns->ns_capinfo = ni->ni_capinfo; ns->ns_flags = flags; (void)memcpy(ns->ns_macaddr, ni->ni_macaddr, sizeof(ns->ns_macaddr)); (void)memcpy(ns->ns_bssid, ni->ni_bssid, sizeof(ns->ns_bssid)); if (ni->ni_chan != IEEE80211_CHAN_ANYC) { ns->ns_freq = ni->ni_chan->ic_freq; ns->ns_chanflags = ni->ni_chan->ic_flags; ns->ns_chanidx = ni->ni_chan - chan0; } else { ns->ns_freq = ns->ns_chanflags = 0; ns->ns_chanidx = 0; } ns->ns_rssi = ni->ni_rssi; ns->ns_esslen = ni->ni_esslen; (void)memcpy(ns->ns_essid, ni->ni_essid, sizeof(ns->ns_essid)); ns->ns_erp = ni->ni_erp; ns->ns_associd = ni->ni_associd; ns->ns_inact = ni->ni_inact * IEEE80211_INACT_WAIT; ns->ns_rstamp = ni->ni_rstamp; ns->ns_rates = ni->ni_rates; ns->ns_txrate = ni->ni_txrate; ns->ns_intval = ni->ni_intval; (void)memcpy(ns->ns_tstamp, &ni->ni_tstamp, sizeof(ns->ns_tstamp)); ns->ns_txseq = ni->ni_txseqs[0]; ns->ns_rxseq = ni->ni_rxseqs[0]; ns->ns_fhdwell = ni->ni_fhdwell; ns->ns_fhindex = ni->ni_fhindex; ns->ns_fails = ni->ni_fails; } /* Between two examinations of the sysctl tree, I expect each * interface to add no more than 5 nodes. */ #define IEEE80211_SYSCTL_NODE_GROWTH 5 static int ieee80211_sysctl_node(SYSCTLFN_ARGS) { struct ieee80211_node_walk nw; struct ieee80211_node *ni; struct ieee80211_node_sysctl ns; char *dp; u_int cur_ifindex, ifcount, ifindex, last_ifindex, op, arg, hdr_type; uint32_t flags; size_t len, needed, eltsize, out_size; int error, s, saw_bss = 0, nelt; if (namelen == 1 && name[0] == CTL_QUERY) return (sysctl_query(SYSCTLFN_CALL(rnode))); if (namelen != IEEE80211_SYSCTL_NODENAMELEN) return (EINVAL); /* ifindex.op.arg.header-type.eltsize.nelt */ dp = oldp; len = (oldp != NULL) ? *oldlenp : 0; ifindex = name[IEEE80211_SYSCTL_NODENAME_IF]; op = name[IEEE80211_SYSCTL_NODENAME_OP]; arg = name[IEEE80211_SYSCTL_NODENAME_ARG]; hdr_type = name[IEEE80211_SYSCTL_NODENAME_TYPE]; eltsize = name[IEEE80211_SYSCTL_NODENAME_ELTSIZE]; nelt = name[IEEE80211_SYSCTL_NODENAME_ELTCOUNT]; out_size = MIN(sizeof(ns), eltsize); if (op != IEEE80211_SYSCTL_OP_ALL || arg != 0 || hdr_type != IEEE80211_SYSCTL_T_NODE || eltsize < 1 || nelt < 0) return (EINVAL); error = 0; needed = 0; ifcount = 0; last_ifindex = 0; s = splnet(); for (ni = ieee80211_node_walkfirst(&nw, ifindex); ni != NULL; ni = ieee80211_node_walknext(&nw)) { struct ieee80211com *ic; ic = nw.nw_ic; cur_ifindex = ic->ic_ifp->if_index; if (cur_ifindex != last_ifindex) { saw_bss = 0; ifcount++; last_ifindex = cur_ifindex; } if (nelt <= 0) continue; if (saw_bss && ni == ic->ic_bss) continue; else if (ni == ic->ic_bss) { saw_bss = 1; flags = IEEE80211_NODE_SYSCTL_F_BSS; } else flags = 0; if (ni->ni_table == &ic->ic_scan) flags |= IEEE80211_NODE_SYSCTL_F_SCAN; else if (ni->ni_table == &ic->ic_sta) flags |= IEEE80211_NODE_SYSCTL_F_STA; if (len >= eltsize) { ieee80211_sysctl_fill_node(ni, &ns, cur_ifindex, &ic->ic_channels[0], flags); error = copyout(&ns, dp, out_size); if (error) goto cleanup; dp += eltsize; len -= eltsize; } needed += eltsize; if (nelt != INT_MAX) nelt--; } cleanup: splx(s); *oldlenp = needed; if (oldp == NULL) *oldlenp += ifcount * IEEE80211_SYSCTL_NODE_GROWTH * eltsize; return (error); } /* * Setup sysctl(3) MIB, net.ieee80211.* * * TBD condition CTLFLAG_PERMANENT on being a module or not */ static struct sysctllog *ieee80211_sysctllog; static void ieee80211_sysctl_setup(void) { int rc; const struct sysctlnode *rnode; if ((rnode = ieee80211_sysctl_treetop(&ieee80211_sysctllog)) == NULL) return; if ((rc = sysctl_createv(&ieee80211_sysctllog, 0, &rnode, NULL, CTLFLAG_PERMANENT, CTLTYPE_NODE, "nodes", "client/peer stations", ieee80211_sysctl_node, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; #ifdef IEEE80211_DEBUG /* control debugging printfs */ if ((rc = sysctl_createv(&ieee80211_sysctllog, 0, &rnode, NULL, CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "debug", SYSCTL_DESCR("control debugging printfs"), NULL, 0, &ieee80211_debug, 0, CTL_CREATE, CTL_EOL)) != 0) goto err; #endif /* IEEE80211_DEBUG */ ieee80211_rssadapt_sysctl_setup(&ieee80211_sysctllog); return; err: printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); } int ieee80211_node_dectestref(struct ieee80211_node *ni) { if (atomic_dec_uint_nv(&ni->ni_refcnt) == 0) { atomic_inc_uint(&ni->ni_refcnt); return 1; } else return 0; } void ieee80211_drain_ifq(struct ifqueue *ifq) { struct ieee80211_node *ni; struct mbuf *m; for (;;) { IF_DEQUEUE(ifq, m); if (m == NULL) break; ni = M_GETCTX(m, struct ieee80211_node *); KASSERT(ni != NULL); ieee80211_free_node(ni); M_SETCTX(m, NULL); m_freem(m); } } void if_printf(struct ifnet *ifp, const char *fmt, ...) { va_list ap; va_start(ap, fmt); printf("%s: ", ifp->if_xname); vprintf(fmt, ap); va_end(ap); return; } /* * Allocate and setup a management frame of the specified * size. We return the mbuf and a pointer to the start * of the contiguous data area that's been reserved based * on the packet length. The data area is forced to 32-bit * alignment and the buffer length to a multiple of 4 bytes. * This is done mainly so beacon frames (that require this) * can use this interface too. */ struct mbuf * ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen) { struct mbuf *m; u_int len; /* * NB: we know the mbuf routines will align the data area * so we don't need to do anything special. */ /* XXX 4-address frame? */ len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4); IASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); if (len <= MHLEN) { m = m_gethdr(M_NOWAIT, MT_HEADER); /* * Align the data in case additional headers are added. * This should only happen when a WEP header is added * which only happens for shared key authentication mgt * frames which all fit in MHLEN. */ if (m != NULL) MH_ALIGN(m, len); } else m = m_getcl(M_NOWAIT, MT_HEADER, M_PKTHDR); if (m != NULL) { m->m_data += sizeof(struct ieee80211_frame); *frm = m->m_data; IASSERT((uintptr_t)*frm % 4 == 0, ("bad beacon boundary")); } return m; } void get_random_bytes(void *p, size_t n) { cprng_fast(p, n); } void ieee80211_notify_node_join(struct ieee80211com *ic, struct ieee80211_node *ni, int newassoc) { struct ifnet *ifp = ic->ic_ifp; struct ieee80211_join_event iev; IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%snode %s join\n", (ni == ic->ic_bss) ? "bss " : "", ether_sprintf(ni->ni_macaddr)); memset(&iev, 0, sizeof(iev)); if (ni == ic->ic_bss) { IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_bssid); rt_ieee80211msg(ifp, newassoc ? RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, &iev, sizeof(iev)); if_link_state_change(ifp, LINK_STATE_UP); } else { IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); rt_ieee80211msg(ifp, newassoc ? RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, &iev, sizeof(iev)); } } void ieee80211_notify_node_leave(struct ieee80211com *ic, struct ieee80211_node *ni) { struct ifnet *ifp = ic->ic_ifp; struct ieee80211_leave_event iev; IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%snode %s leave\n", (ni == ic->ic_bss) ? "bss " : "", ether_sprintf(ni->ni_macaddr)); if (ni == ic->ic_bss) { rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); if_link_state_change(ifp, LINK_STATE_DOWN); } else { /* fire off wireless event station leaving */ memset(&iev, 0, sizeof(iev)); IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); rt_ieee80211msg(ifp, RTM_IEEE80211_LEAVE, &iev, sizeof(iev)); } } void ieee80211_notify_scan_done(struct ieee80211com *ic) { struct ifnet *ifp = ic->ic_ifp; IEEE80211_DPRINTF(ic, IEEE80211_MSG_SCAN, "%s", "notify scan done\n"); /* dispatch wireless event indicating scan completed */ rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); } void ieee80211_notify_replay_failure(struct ieee80211com *ic, const struct ieee80211_frame *wh, const struct ieee80211_key *k, u_int64_t rsc) { struct ifnet *ifp = ic->ic_ifp; IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, "[%s] %s replay detected \n", ether_sprintf(wh->i_addr2), k->wk_cipher->ic_name, (intmax_t) rsc, (intmax_t) k->wk_keyrsc, k->wk_keyix, k->wk_rxkeyix); if (ifp != NULL) { /* NB: for cipher test modules */ struct ieee80211_replay_event iev; IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); iev.iev_cipher = k->wk_cipher->ic_cipher; if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) iev.iev_keyix = k->wk_rxkeyix; else iev.iev_keyix = k->wk_keyix; iev.iev_keyrsc = k->wk_keyrsc; iev.iev_rsc = rsc; rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); } } void ieee80211_notify_michael_failure(struct ieee80211com *ic, const struct ieee80211_frame *wh, u_int keyix) { struct ifnet *ifp = ic->ic_ifp; IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, "[%s] michael MIC verification failed \n", ether_sprintf(wh->i_addr2), keyix); ic->ic_stats.is_rx_tkipmic++; if (ifp != NULL) { /* NB: for cipher test modules */ struct ieee80211_michael_event iev; IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); iev.iev_cipher = IEEE80211_CIPHER_TKIP; iev.iev_keyix = keyix; rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); } } void ieee80211_load_module(const char *modname) { #ifdef notyet struct thread *td = curthread; if (suser(td) == 0 && securelevel_gt(td->td_ucred, 0) == 0) { mtx_lock(&Giant); (void) linker_load_module(modname, NULL, NULL, NULL, NULL); mtx_unlock(&Giant); } #else printf("%s: load the %s module by hand for now.\n", __func__, modname); #endif }