diff options
Diffstat (limited to 'sys/net80211/ieee80211_node.c')
| -rw-r--r-- | sys/net80211/ieee80211_node.c | 3333 |
1 files changed, 3333 insertions, 0 deletions
diff --git a/sys/net80211/ieee80211_node.c b/sys/net80211/ieee80211_node.c new file mode 100644 index 000000000000..a495f2f78113 --- /dev/null +++ b/sys/net80211/ieee80211_node.c @@ -0,0 +1,3333 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2001 Atsushi Onoe + * Copyright (c) 2002-2009 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. + * + * 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 <sys/cdefs.h> +#include "opt_wlan.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/malloc.h> +#include <sys/kernel.h> + +#include <sys/socket.h> + +#include <net/if.h> +#include <net/if_var.h> +#include <net/if_media.h> +#include <net/ethernet.h> + +#include <net80211/ieee80211_var.h> +#include <net80211/ieee80211_input.h> +#ifdef IEEE80211_SUPPORT_SUPERG +#include <net80211/ieee80211_superg.h> +#endif +#ifdef IEEE80211_SUPPORT_TDMA +#include <net80211/ieee80211_tdma.h> +#endif +#include <net80211/ieee80211_wds.h> +#include <net80211/ieee80211_mesh.h> +#include <net80211/ieee80211_ratectl.h> +#include <net80211/ieee80211_vht.h> + +#include <net/bpf.h> + +#ifdef IEEE80211_DEBUG_REFCNT +#define __debrefcnt_used +#else +#define __debrefcnt_used __unused +#endif + +/* + * IEEE80211_NODE_HASHSIZE must be a power of 2. + */ +CTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0); + +/* + * Association id's are managed with a bit vector. + */ +#define IEEE80211_AID_SET(_vap, b) \ + ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \ + (1 << (IEEE80211_AID(b) % 32))) +#define IEEE80211_AID_CLR(_vap, b) \ + ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \ + ~(1 << (IEEE80211_AID(b) % 32))) +#define IEEE80211_AID_ISSET(_vap, b) \ + ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32))) + +static int ieee80211_sta_join1(struct ieee80211_node *); + +static struct ieee80211_node *ieee80211_alloc_node( + struct ieee80211_node_table *, struct ieee80211vap *, + const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *, int); +static struct ieee80211_node *node_alloc(struct ieee80211vap *, + const uint8_t [IEEE80211_ADDR_LEN]); +static int node_init(struct ieee80211_node *); +static void node_cleanup(struct ieee80211_node *); +static void node_free(struct ieee80211_node *); +static void node_age(struct ieee80211_node *); +static int8_t node_getrssi(const struct ieee80211_node *); +static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *); +static void node_getmimoinfo(const struct ieee80211_node *, + struct ieee80211_mimo_info *); + +static void __ieee80211_free_node(struct ieee80211_node *); + +static void node_reclaim(struct ieee80211_node_table *nt, + struct ieee80211_node *ni); +static void ieee80211_node_table_init(struct ieee80211com *ic, + struct ieee80211_node_table *nt, const char *name, + int inact, int keymaxix); +static void ieee80211_node_table_reset(struct ieee80211_node_table *, + struct ieee80211vap *); +static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt); +static void ieee80211_vap_erp_timeout(struct ieee80211vap *); + +MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state"); +MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie"); + +void +ieee80211_node_attach(struct ieee80211com *ic) +{ + /* XXX really want maxlen enforced per-sta */ + ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8, + "802.11 staging q"); + ieee80211_node_table_init(ic, &ic->ic_sta, "station", + IEEE80211_INACT_INIT, ic->ic_max_keyix); + callout_init(&ic->ic_inact, 1); + callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, + ieee80211_node_timeout, ic); + + ic->ic_node_alloc = node_alloc; + ic->ic_node_init = node_init; + ic->ic_node_free = node_free; + ic->ic_node_cleanup = node_cleanup; + ic->ic_node_age = node_age; + ic->ic_node_drain = node_age; /* NB: same as age */ + ic->ic_node_getrssi = node_getrssi; + ic->ic_node_getsignal = node_getsignal; + ic->ic_node_getmimoinfo = node_getmimoinfo; + + /* + * Set flags to be propagated to all vap's; + * these define default behaviour/configuration. + */ + ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */ +} + +void +ieee80211_node_detach(struct ieee80211com *ic) +{ + + callout_drain(&ic->ic_inact); + ieee80211_node_table_cleanup(&ic->ic_sta); + ieee80211_ageq_drain(&ic->ic_stageq); + ieee80211_ageq_cleanup(&ic->ic_stageq); +} + +void +ieee80211_node_vattach(struct ieee80211vap *vap) +{ + /* NB: driver can override */ + vap->iv_max_aid = IEEE80211_AID_DEF; + + /* default station inactivity timer settings */ + vap->iv_inact_init = IEEE80211_INACT_INIT; + vap->iv_inact_auth = IEEE80211_INACT_AUTH; + vap->iv_inact_run = IEEE80211_INACT_RUN; + vap->iv_inact_probe = IEEE80211_INACT_PROBE; + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT, + "%s: init %u auth %u run %u probe %u\n", __func__, + vap->iv_inact_init, vap->iv_inact_auth, + vap->iv_inact_run, vap->iv_inact_probe); +} + +void +ieee80211_node_latevattach(struct ieee80211vap *vap) +{ + + /* XXX should ieee80211_vap_attach(), our only caller hold the lock? */ + IEEE80211_UNLOCK_ASSERT(vap->iv_ic); + + if (vap->iv_opmode == IEEE80211_M_HOSTAP) { + /* XXX should we allow max aid to be zero? */ + if (vap->iv_max_aid < IEEE80211_AID_MIN) { + vap->iv_max_aid = IEEE80211_AID_MIN; + if_printf(vap->iv_ifp, + "WARNING: max aid too small, changed to %d\n", + vap->iv_max_aid); + } + vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC( + howmany(vap->iv_max_aid, 32) * sizeof(uint32_t), + M_80211_NODE, + IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); + if (vap->iv_aid_bitmap == NULL) { + /* XXX no way to recover */ + printf("%s: no memory for AID bitmap, max aid %d!\n", + __func__, vap->iv_max_aid); + vap->iv_max_aid = 0; + } + } + + IEEE80211_LOCK(vap->iv_ic); + ieee80211_reset_bss(vap); + IEEE80211_UNLOCK(vap->iv_ic); + + vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode); +} + +void +ieee80211_node_vdetach(struct ieee80211vap *vap) +{ + struct ieee80211com *ic = vap->iv_ic; + + /* XXX should ieee80211_vap_detach(), our only caller hold the lock? */ + IEEE80211_UNLOCK_ASSERT(vap->iv_ic); + + ieee80211_node_table_reset(&ic->ic_sta, vap); + IEEE80211_LOCK(ic); + if (vap->iv_bss != NULL) { + ieee80211_free_node(vap->iv_bss); + vap->iv_update_bss(vap, NULL); + } + IEEE80211_UNLOCK(ic); + if (vap->iv_aid_bitmap != NULL) { + IEEE80211_FREE(vap->iv_aid_bitmap, M_80211_NODE); + vap->iv_aid_bitmap = NULL; + } +} + +/* + * Port authorize/unauthorize interfaces for use by an authenticator. + */ + +void +ieee80211_node_authorize(struct ieee80211_node *ni) +{ + struct ieee80211vap *vap = ni->ni_vap; + + ni->ni_flags |= IEEE80211_NODE_AUTH; + ni->ni_inact_reload = vap->iv_inact_run; + ni->ni_inact = ni->ni_inact_reload; + + IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, + "%s: inact_reload %u", __func__, ni->ni_inact_reload); +} + +void +ieee80211_node_unauthorize(struct ieee80211_node *ni) +{ + struct ieee80211vap *vap = ni->ni_vap; + + ni->ni_flags &= ~IEEE80211_NODE_AUTH; + ni->ni_inact_reload = vap->iv_inact_auth; + if (ni->ni_inact > ni->ni_inact_reload) + ni->ni_inact = ni->ni_inact_reload; + + IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, + "%s: inact_reload %u inact %u", __func__, + ni->ni_inact_reload, ni->ni_inact); +} + +/* + * Fix tx parameters for a node according to ``association state''. + */ +void +ieee80211_node_setuptxparms(struct ieee80211_node *ni) +{ + struct ieee80211vap *vap = ni->ni_vap; + enum ieee80211_phymode mode; + + if (ni->ni_flags & IEEE80211_NODE_VHT) { + if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) + mode = IEEE80211_MODE_VHT_5GHZ; + else + mode = IEEE80211_MODE_VHT_2GHZ; + } else if (ni->ni_flags & IEEE80211_NODE_HT) { + if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) + mode = IEEE80211_MODE_11NA; + else + mode = IEEE80211_MODE_11NG; + } else { /* legacy rate handling */ + if (IEEE80211_IS_CHAN_ST(ni->ni_chan)) + mode = IEEE80211_MODE_STURBO_A; + else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan)) + mode = IEEE80211_MODE_HALF; + else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan)) + mode = IEEE80211_MODE_QUARTER; + /* NB: 108A should be handled as 11a */ + else if (IEEE80211_IS_CHAN_A(ni->ni_chan)) + mode = IEEE80211_MODE_11A; + else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) || + (ni->ni_flags & IEEE80211_NODE_ERP)) + mode = IEEE80211_MODE_11G; + else + mode = IEEE80211_MODE_11B; + } + ni->ni_txparms = &vap->iv_txparms[mode]; +} + +/* + * Set/change the channel. The rate set is also updated as + * to insure a consistent view by drivers. + * XXX should be private but hostap needs it to deal with CSA + */ +void +ieee80211_node_set_chan(struct ieee80211_node *ni, + struct ieee80211_channel *chan) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211vap *vap = ni->ni_vap; + enum ieee80211_phymode mode; + + KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel")); + + ni->ni_chan = chan; + mode = ieee80211_chan2mode(chan); + if (IEEE80211_IS_CHAN_HT(chan)) { + /* + * We must install the legacy rate est in ni_rates and the + * HT rate set in ni_htrates. + */ + ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan); + /* + * Setup bss tx parameters based on operating mode. We + * use legacy rates when operating in a mixed HT+non-HT bss + * and non-ERP rates in 11g for mixed ERP+non-ERP bss. + */ + if (mode == IEEE80211_MODE_11NA && + (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) + mode = IEEE80211_MODE_11A; + else if (mode == IEEE80211_MODE_11NG && + (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) + mode = IEEE80211_MODE_11G; + if (mode == IEEE80211_MODE_11G && + (vap->iv_flags & IEEE80211_F_PUREG) == 0) + mode = IEEE80211_MODE_11B; + } + ni->ni_txparms = &vap->iv_txparms[mode]; + ni->ni_rates = *ieee80211_get_suprates(ic, chan); +} + +static __inline void +copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss) +{ + /* propagate useful state */ + nbss->ni_authmode = obss->ni_authmode; + nbss->ni_txpower = obss->ni_txpower; + nbss->ni_vlan = obss->ni_vlan; + /* XXX statistics? */ + /* XXX legacy WDS bssid? */ +} + +void +ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan) +{ + struct ieee80211com *ic = vap->iv_ic; + struct ieee80211_node *ni; + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, + "%s: creating %s on channel %u%c flags 0x%08x\n", __func__, + ieee80211_opmode_name[vap->iv_opmode], + ieee80211_chan2ieee(ic, chan), + ieee80211_channel_type_char(chan), + chan->ic_flags); + + ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr, + __func__, __LINE__); + if (ni == NULL) { + /* XXX recovery? */ + return; + } + IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); + ni->ni_esslen = vap->iv_des_ssid[0].len; + memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); + if (vap->iv_bss != NULL) + copy_bss(ni, vap->iv_bss); + ni->ni_intval = ic->ic_bintval; + if (vap->iv_flags & IEEE80211_F_PRIVACY) + ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; + if (ic->ic_phytype == IEEE80211_T_FH) { + ni->ni_fhdwell = 200; /* XXX */ + ni->ni_fhindex = 1; + } + if (vap->iv_opmode == IEEE80211_M_IBSS) { + ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */ + if (vap->iv_flags & IEEE80211_F_DESBSSID) + IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); + else { + net80211_get_random_bytes(ni->ni_bssid, + IEEE80211_ADDR_LEN); + /* clear group bit, add local bit */ + ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02; + } + } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { + if (vap->iv_flags & IEEE80211_F_DESBSSID) + IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); + else +#ifdef IEEE80211_SUPPORT_TDMA + if ((vap->iv_caps & IEEE80211_C_TDMA) == 0) +#endif + memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); +#ifdef IEEE80211_SUPPORT_MESH + } else if (vap->iv_opmode == IEEE80211_M_MBSS) { + ni->ni_meshidlen = vap->iv_mesh->ms_idlen; + memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen); +#endif + } + /* + * Fix the channel and related attributes. + */ + /* clear DFS CAC state on previous channel */ + if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && + ic->ic_bsschan->ic_freq != chan->ic_freq && + IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) + ieee80211_dfs_cac_clear(ic, ic->ic_bsschan); + ic->ic_bsschan = chan; + ieee80211_node_set_chan(ni, chan); + ic->ic_curmode = ieee80211_chan2mode(chan); + /* + * Do mode-specific setup. + */ + if (IEEE80211_IS_CHAN_FULL(chan)) { + if (IEEE80211_IS_CHAN_ANYG(chan)) { + /* + * Use a mixed 11b/11g basic rate set. + */ + ieee80211_setbasicrates(&ni->ni_rates, + IEEE80211_MODE_11G); + if (vap->iv_flags & IEEE80211_F_PUREG) { + /* + * Also mark OFDM rates basic so 11b + * stations do not join (WiFi compliance). + */ + ieee80211_addbasicrates(&ni->ni_rates, + IEEE80211_MODE_11A); + } + } else if (IEEE80211_IS_CHAN_B(chan)) { + /* + * Force pure 11b rate set. + */ + ieee80211_setbasicrates(&ni->ni_rates, + IEEE80211_MODE_11B); + } + } + + /* XXX TODO: other bits and pieces - eg fast-frames? */ + + /* If we're an 11n channel then initialise the 11n bits */ + if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) { + /* XXX what else? */ + ieee80211_ht_node_init(ni); + ieee80211_vht_node_init(ni); + } else if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) { + /* XXX what else? */ + ieee80211_ht_node_init(ni); + } + + (void) ieee80211_sta_join1(ieee80211_ref_node(ni)); +} + +/* + * Reset bss state on transition to the INIT state. + * Clear any stations from the table (they have been + * deauth'd) and reset the bss node (clears key, rate + * etc. state). + */ +void +ieee80211_reset_bss(struct ieee80211vap *vap) +{ + struct ieee80211com *ic = vap->iv_ic; + struct ieee80211_node *ni, *obss; + + IEEE80211_LOCK_ASSERT(ic); + + ieee80211_node_table_reset(&ic->ic_sta, vap); + /* XXX multi-bss: wrong */ + ieee80211_vap_reset_erp(vap); + + ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr, + __func__, __LINE__); + KASSERT(ni != NULL, ("unable to setup initial BSS node")); + obss = vap->iv_update_bss(vap, ieee80211_ref_node(ni)); + if (obss != NULL) { + copy_bss(ni, obss); + ni->ni_intval = ic->ic_bintval; + ieee80211_free_node(obss); + } else + IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); +} + +static int +match_ssid(const struct ieee80211_node *ni, + int nssid, const struct ieee80211_scan_ssid ssids[]) +{ + int i; + + for (i = 0; i < nssid; i++) { + if (ni->ni_esslen == ssids[i].len && + memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0) + return 1; + } + return 0; +} + +/* + * Test a node for suitability/compatibility. + */ +static int +check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + uint8_t rate; + + if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) + return 0; + if (vap->iv_opmode == IEEE80211_M_IBSS) { + if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) + return 0; + } else { + if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) + return 0; + } + if (vap->iv_flags & IEEE80211_F_PRIVACY) { + if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) + return 0; + } else { + /* XXX does this mean privacy is supported or required? */ + if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) + return 0; + } + rate = ieee80211_fix_rate(ni, &ni->ni_rates, + IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); + if (rate & IEEE80211_RATE_BASIC) + return 0; + if (vap->iv_des_nssid != 0 && + !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) + return 0; + if ((vap->iv_flags & IEEE80211_F_DESBSSID) && + !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) + return 0; + return 1; +} + +#ifdef IEEE80211_DEBUG +/* + * Display node suitability/compatibility. + */ +static void +check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + uint8_t rate; + int fail; + + fail = 0; + if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) + fail |= 0x01; + if (vap->iv_opmode == IEEE80211_M_IBSS) { + if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) + fail |= 0x02; + } else { + if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) + fail |= 0x02; + } + if (vap->iv_flags & IEEE80211_F_PRIVACY) { + if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) + fail |= 0x04; + } else { + /* XXX does this mean privacy is supported or required? */ + if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) + fail |= 0x04; + } + rate = ieee80211_fix_rate(ni, &ni->ni_rates, + IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); + if (rate & IEEE80211_RATE_BASIC) + fail |= 0x08; + if (vap->iv_des_nssid != 0 && + !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) + fail |= 0x10; + if ((vap->iv_flags & IEEE80211_F_DESBSSID) && + !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) + fail |= 0x20; + + printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr)); + printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' '); + printf(" %3d%c", + ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' '); + printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, + fail & 0x08 ? '!' : ' '); + printf(" %4s%c", + (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : + (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : + "????", + fail & 0x02 ? '!' : ' '); + printf(" %3s%c ", + (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", + fail & 0x04 ? '!' : ' '); + ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); + printf("%s\n", fail & 0x10 ? "!" : ""); +} +#endif /* IEEE80211_DEBUG */ + +int +ieee80211_ibss_merge_check(struct ieee80211_node *ni) +{ + struct ieee80211vap *vap = ni->ni_vap; + + if (ni == vap->iv_bss || + IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) { + /* unchanged, nothing to do */ + return 0; + } + + if (!check_bss(vap, ni)) { + /* capabilities mismatch */ + IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, + "%s: merge failed, capabilities mismatch\n", __func__); +#ifdef IEEE80211_DEBUG + if (ieee80211_msg_assoc(vap)) + check_bss_debug(vap, ni); +#endif + vap->iv_stats.is_ibss_capmismatch++; + return 0; + } + + return 1; +} + +/* + * Check if the given node should populate the node table. + * + * We need to be in "see all beacons for all ssids" mode in order + * to do IBSS merges, however this means we will populate nodes for + * /all/ IBSS SSIDs, versus just the one we care about. + * + * So this check ensures the node can actually belong to our IBSS + * configuration. For now it simply checks the SSID. + */ +int +ieee80211_ibss_node_check_new(struct ieee80211_node *ni, + const struct ieee80211_scanparams *scan) +{ + struct ieee80211vap *vap = ni->ni_vap; + int i; + + /* + * If we have no SSID and no scan SSID, return OK. + */ + if (vap->iv_des_nssid == 0 && scan->ssid == NULL) + goto ok; + + /* + * If we have one of (SSID, scan SSID) then return error. + */ + if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL)) + goto mismatch; + + /* + * Double-check - we need scan SSID. + */ + if (scan->ssid == NULL) + goto mismatch; + + /* + * Check if the scan SSID matches the SSID list for the VAP. + */ + for (i = 0; i < vap->iv_des_nssid; i++) { + /* Sanity length check */ + if (vap->iv_des_ssid[i].len != scan->ssid[1]) + continue; + + /* Note: SSID in the scan entry is the IE format */ + if (memcmp(vap->iv_des_ssid[i].ssid, scan->ssid + 2, + vap->iv_des_ssid[i].len) == 0) + goto ok; + } + +mismatch: + return (0); +ok: + return (1); +} + +/* + * Handle 802.11 ad hoc network merge. The + * convention, set by the Wireless Ethernet Compatibility Alliance + * (WECA), is that an 802.11 station will change its BSSID to match + * the "oldest" 802.11 ad hoc network, on the same channel, that + * has the station's desired SSID. The "oldest" 802.11 network + * sends beacons with the greatest TSF timestamp. + * + * The caller is assumed to validate TSF's before attempting a merge. + * + * Return !0 if the BSSID changed, 0 otherwise. + */ +int +ieee80211_ibss_merge(struct ieee80211_node *ni) +{ +#ifdef IEEE80211_DEBUG + struct ieee80211vap *vap = ni->ni_vap; +#endif + + if (! ieee80211_ibss_merge_check(ni)) + return 0; + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, + "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__, + ether_sprintf(ni->ni_bssid), + vap->iv_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", + vap->iv_flags&IEEE80211_F_SHSLOT ? "short" : "long", + vap->iv_flags&IEEE80211_F_USEPROT ? ", protection" : "" + ); + return ieee80211_sta_join1(ieee80211_ref_node(ni)); +} + +/* + * Calculate HT channel promotion flags for all vaps. + * This assumes ni_chan have been setup for each vap. + */ +static int +gethtadjustflags(struct ieee80211com *ic) +{ + struct ieee80211vap *vap; + int flags; + + flags = 0; + /* XXX locking */ + TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { + if (vap->iv_state < IEEE80211_S_RUN) + continue; + switch (vap->iv_opmode) { + case IEEE80211_M_WDS: + case IEEE80211_M_STA: + case IEEE80211_M_AHDEMO: + case IEEE80211_M_HOSTAP: + case IEEE80211_M_IBSS: + case IEEE80211_M_MBSS: + flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan); + break; + default: + break; + } + } + return flags; +} + +/* + * Calculate VHT channel promotion flags for all vaps. + * This assumes ni_chan have been setup for each vap. + */ +static int +getvhtadjustflags(struct ieee80211com *ic) +{ + struct ieee80211vap *vap; + int flags; + + flags = 0; + /* XXX locking */ + TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { + if (vap->iv_state < IEEE80211_S_RUN) + continue; + switch (vap->iv_opmode) { + case IEEE80211_M_WDS: + case IEEE80211_M_STA: + case IEEE80211_M_AHDEMO: + case IEEE80211_M_HOSTAP: + case IEEE80211_M_IBSS: + case IEEE80211_M_MBSS: + flags |= ieee80211_vhtchanflags(vap->iv_bss->ni_chan); + break; + default: + break; + } + } + return flags; +} + +/* + * Check if the current channel needs to change based on whether + * any vap's are using HT20/HT40. This is used to sync the state + * of ic_curchan after a channel width change on a running vap. + * + * Same applies for VHT. + */ +void +ieee80211_sync_curchan(struct ieee80211com *ic) +{ + struct ieee80211_channel *c; + + c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic)); + c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic)); + + if (c != ic->ic_curchan) { + ic->ic_curchan = c; + ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); + ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); + IEEE80211_UNLOCK(ic); + ic->ic_set_channel(ic); + ieee80211_radiotap_chan_change(ic); + IEEE80211_LOCK(ic); + } +} + +/* + * Setup the current channel. The request channel may be + * promoted if other vap's are operating with HT20/HT40. + */ +void +ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) +{ + if (ic->ic_htcaps & IEEE80211_HTC_HT) { + int flags = gethtadjustflags(ic); + /* + * Check for channel promotion required to support the + * set of running vap's. This assumes we are called + * after ni_chan is setup for each vap. + */ + /* XXX VHT? */ + /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */ + if (flags > ieee80211_htchanflags(c)) + c = ieee80211_ht_adjust_channel(ic, c, flags); + } + + /* + * VHT promotion - this will at least promote to VHT20/40 + * based on what HT has done; it may further promote the + * channel to VHT80 or above. + */ + if (ic->ic_vht_cap.vht_cap_info != 0) { + int flags = getvhtadjustflags(ic); + if (flags > ieee80211_vhtchanflags(c)) + c = ieee80211_vht_adjust_channel(ic, c, flags); + } + + ic->ic_bsschan = ic->ic_curchan = c; + ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); + ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); +} + +/* + * Change the current channel. The channel change is guaranteed to have + * happened before the next state change. + */ +void +ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) +{ + ieee80211_setupcurchan(ic, c); + ieee80211_runtask(ic, &ic->ic_chan_task); +} + +void +ieee80211_update_chw(struct ieee80211com *ic) +{ + + ieee80211_setupcurchan(ic, ic->ic_curchan); + ieee80211_runtask(ic, &ic->ic_chw_task); +} + +/* + * Join the specified IBSS/BSS network. The node is assumed to + * be passed in with a held reference. + */ +static int +ieee80211_sta_join1(struct ieee80211_node *selbs) +{ + struct ieee80211vap *vap = selbs->ni_vap; + struct ieee80211com *ic = selbs->ni_ic; + struct ieee80211_node *obss; + int canreassoc; + + /* + * Committed to selbs, setup state. + */ + IEEE80211_LOCK(ic); /* XXX may recurse here, check callers. */ + obss = vap->iv_update_bss(vap, selbs); /* NB: caller assumed to bump refcnt */ + IEEE80211_UNLOCK(ic); + /* + * Check if old+new node have the same address in which + * case we can reassociate when operating in sta mode. + */ + /* XXX We'll not be in RUN anymore as iv_state got updated already? */ + canreassoc = (obss != NULL && + vap->iv_state == IEEE80211_S_RUN && + IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr)); + if (obss != NULL) { + struct ieee80211_node_table *nt = obss->ni_table; + + copy_bss(selbs, obss); + if (nt != NULL) { + ieee80211_node_decref(obss); /* iv_bss reference */ + IEEE80211_NODE_LOCK(nt); + node_reclaim(nt, obss); /* station table reference */ + IEEE80211_NODE_UNLOCK(nt); + } else { + ieee80211_free_node(obss); /* iv_bss reference */ + } + + obss = NULL; /* NB: guard against later use */ + } + + /* + * Delete unusable rates; we've already checked + * that the negotiated rate set is acceptable. + */ + ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates, + IEEE80211_F_DODEL | IEEE80211_F_JOIN); + + ieee80211_setcurchan(ic, selbs->ni_chan); + /* + * Set the erp state (mostly the slot time) to deal with + * the auto-select case; this should be redundant if the + * mode is locked. + */ + ieee80211_vap_reset_erp(vap); + ieee80211_wme_initparams(vap); + + if (vap->iv_opmode == IEEE80211_M_STA) { + if (canreassoc) { + /* Reassociate */ + ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); + } else { + /* + * Act as if we received a DEAUTH frame in case we + * are invoked from the RUN state. This will cause + * us to try to re-authenticate if we are operating + * as a station. + */ + IEEE80211_DPRINTF(vap, IEEE80211_MSG_AUTH, + "%s %p<%s> %s -> AUTH, FC0_SUBTYPE_DEAUTH\n", + __func__, selbs, ether_sprintf(selbs->ni_macaddr), + ieee80211_state_name[vap->iv_state]); + ieee80211_new_state(vap, IEEE80211_S_AUTH, + IEEE80211_FC0_SUBTYPE_DEAUTH); + } + } else + ieee80211_new_state(vap, IEEE80211_S_RUN, -1); + return 1; +} + +int +ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan, + const struct ieee80211_scan_entry *se) +{ + struct ieee80211com *ic = vap->iv_ic; + struct ieee80211_node *ni; + int do_ht = 0; + + ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr, + __func__, __LINE__); + if (ni == NULL) { + /* XXX msg */ + return 0; + } + + /* + * Expand scan state into node's format. + * XXX may not need all this stuff + */ + IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid); + ni->ni_esslen = se->se_ssid[1]; + memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen); + ni->ni_tstamp.tsf = se->se_tstamp.tsf; + ni->ni_intval = se->se_intval; + ni->ni_capinfo = se->se_capinfo; + ni->ni_chan = chan; + ni->ni_timoff = se->se_timoff; + ni->ni_fhdwell = se->se_fhdwell; + ni->ni_fhindex = se->se_fhindex; + ni->ni_erp = se->se_erp; + IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi); + ni->ni_noise = se->se_noise; + if (vap->iv_opmode == IEEE80211_M_STA) { + /* NB: only infrastructure mode requires an associd */ + ni->ni_flags |= IEEE80211_NODE_ASSOCID; + } + + if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) { + ieee80211_ies_expand(&ni->ni_ies); +#ifdef IEEE80211_SUPPORT_SUPERG + if (ni->ni_ies.ath_ie != NULL) + ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); +#endif + if (ni->ni_ies.htcap_ie != NULL) + ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); + if (ni->ni_ies.htinfo_ie != NULL) + ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); +#ifdef IEEE80211_SUPPORT_MESH + if (ni->ni_ies.meshid_ie != NULL) + ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie); +#endif +#ifdef IEEE80211_SUPPORT_TDMA + if (ni->ni_ies.tdma_ie != NULL) + ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie); +#endif + if (ni->ni_ies.vhtcap_ie != NULL) + ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie); + if (ni->ni_ies.vhtopmode_ie != NULL) + ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie); + + /* XXX parse BSSLOAD IE */ + /* XXX parse TXPWRENV IE */ + /* XXX parse APCHANREP IE */ + } + + vap->iv_dtim_period = se->se_dtimperiod; + vap->iv_dtim_count = 0; + + /* NB: must be after ni_chan is setup */ + ieee80211_setup_rates(ni, se->se_rates, se->se_xrates, + IEEE80211_F_DOSORT); + if (ieee80211_iserp_rateset(&ni->ni_rates)) + ni->ni_flags |= IEEE80211_NODE_ERP; + + /* + * Setup HT state for this node if it's available, otherwise + * non-STA modes won't pick this state up. + * + * For IBSS and related modes that don't go through an + * association request/response, the only appropriate place + * to setup the HT state is here. + */ + if (ni->ni_ies.htinfo_ie != NULL && + ni->ni_ies.htcap_ie != NULL && + vap->iv_flags_ht & IEEE80211_FHT_HT) { + ieee80211_ht_node_init(ni); + ieee80211_ht_updateparams(ni, + ni->ni_ies.htcap_ie, + ni->ni_ies.htinfo_ie); + do_ht = 1; + } + + /* + * Setup VHT state for this node if it's available. + * Same as the above. + * + * For now, don't allow 2GHz VHT operation. + */ + if (ni->ni_ies.vhtopmode_ie != NULL && + ni->ni_ies.vhtcap_ie != NULL && + vap->iv_vht_flags & IEEE80211_FVHT_VHT) { + if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { + printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n", + __func__, + ni->ni_macaddr, + ":"); + } else { + ieee80211_vht_node_init(ni); + ieee80211_vht_updateparams(ni, + ni->ni_ies.vhtcap_ie, + ni->ni_ies.vhtopmode_ie); + ieee80211_setup_vht_rates(ni); + do_ht = 1; + } + } + + /* Finally do the node channel change */ + if (do_ht) { + ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie, + ni->ni_ies.htinfo_ie); + ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie, + IEEE80211_F_JOIN | IEEE80211_F_DOBRS); + ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie); + } + + /* XXX else check for ath FF? */ + /* XXX QoS? Difficult given that WME config is specific to a master */ + + ieee80211_node_setuptxparms(ni); + ieee80211_ratectl_node_init(ni); + + return ieee80211_sta_join1(ieee80211_ref_node(ni)); +} + +/* + * Leave the specified IBSS/BSS network. The node is assumed to + * be passed in with a held reference. + */ +void +ieee80211_sta_leave(struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + + ic->ic_node_cleanup(ni); + ieee80211_notify_node_leave(ni); +} + +/* + * Send a deauthenticate frame and drop the station. + */ +void +ieee80211_node_deauth(struct ieee80211_node *ni, int reason) +{ + /* NB: bump the refcnt to be sure temporary nodes are not reclaimed */ + ieee80211_ref_node(ni); + if (ni->ni_associd != 0) + IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); + ieee80211_node_leave(ni); + ieee80211_free_node(ni); +} + +static struct ieee80211_node * +node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) +{ + struct ieee80211_node *ni; + + ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node), + M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); + return ni; +} + +static int +node_init(struct ieee80211_node *ni) +{ + return 0; +} + +/* + * Initialize an ie blob with the specified data. If previous + * data exists re-use the data block. As a side effect we clear + * all references to specific ie's; the caller is required to + * recalculate them. + */ +int +ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len) +{ + /* NB: assumes data+len are the last fields */ + memset(ies, 0, offsetof(struct ieee80211_ies, data)); + if (ies->data != NULL && ies->len != len) { + /* data size changed */ + IEEE80211_FREE(ies->data, M_80211_NODE_IE); + ies->data = NULL; + } + if (ies->data == NULL) { + ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE, + IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); + if (ies->data == NULL) { + ies->len = 0; + /* NB: pointers have already been zero'd above */ + return 0; + } + } + memcpy(ies->data, data, len); + ies->len = len; + return 1; +} + +/* + * Reclaim storage for an ie blob. + */ +void +ieee80211_ies_cleanup(struct ieee80211_ies *ies) +{ + if (ies->data != NULL) + IEEE80211_FREE(ies->data, M_80211_NODE_IE); +} + +/* + * Expand an ie blob data contents and to fillin individual + * ie pointers. The data blob is assumed to be well-formed; + * we don't do any validity checking of ie lengths. + */ +void +ieee80211_ies_expand(struct ieee80211_ies *ies) +{ + uint8_t *ie; + int ielen; + + ie = ies->data; + ielen = ies->len; + while (ielen > 1) { + /* Make sure the given IE length fits into the total length. */ + if ((2 + ie[1]) > ielen) { + printf("%s: malformed IEs! ies %p { data %p len %d }: " + "ie %u len 2+%u > total len left %d\n", + __func__, ies, ies->data, ies->len, + ie[0], ie[1], ielen); + return; + } + switch (ie[0]) { + case IEEE80211_ELEMID_VENDOR: + if (iswpaoui(ie)) + ies->wpa_ie = ie; + else if (iswmeoui(ie)) + ies->wme_ie = ie; +#ifdef IEEE80211_SUPPORT_SUPERG + else if (isatherosoui(ie)) + ies->ath_ie = ie; +#endif +#ifdef IEEE80211_SUPPORT_TDMA + else if (istdmaoui(ie)) + ies->tdma_ie = ie; +#endif + break; + case IEEE80211_ELEMID_RSN: + ies->rsn_ie = ie; + break; + case IEEE80211_ELEMID_HTCAP: + ies->htcap_ie = ie; + break; + case IEEE80211_ELEMID_HTINFO: + ies->htinfo_ie = ie; + break; +#ifdef IEEE80211_SUPPORT_MESH + case IEEE80211_ELEMID_MESHID: + ies->meshid_ie = ie; + break; +#endif + case IEEE80211_ELEMID_VHT_CAP: + ies->vhtcap_ie = ie; + break; + case IEEE80211_ELEMID_VHT_OPMODE: + ies->vhtopmode_ie = ie; + break; + case IEEE80211_ELEMID_VHT_PWR_ENV: + ies->vhtpwrenv_ie = ie; + break; + case IEEE80211_ELEMID_BSSLOAD: + ies->bssload_ie = ie; + break; + case IEEE80211_ELEMID_APCHANREP: + ies->apchanrep_ie = ie; + break; + } + ielen -= 2 + ie[1]; + ie += 2 + ie[1]; + } +} + +/* + * Reclaim any resources in a node and reset any critical + * state. Typically nodes are free'd immediately after, + * but in some cases the storage may be reused so we need + * to insure consistent state (should probably fix that). + */ +static void +node_cleanup(struct ieee80211_node *ni) +{ + struct ieee80211vap *vap = ni->ni_vap; + struct ieee80211com *ic = ni->ni_ic; + int i; + + /* NB: preserve ni_table */ + if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) { + if (vap->iv_opmode != IEEE80211_M_STA) + vap->iv_ps_sta--; + ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT; + IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, + "power save mode off, %u sta's in ps mode", vap->iv_ps_sta); + } + /* + * Cleanup any VHT and HT-related state. + */ + if (ni->ni_flags & IEEE80211_NODE_VHT) + ieee80211_vht_node_cleanup(ni); + if (ni->ni_flags & IEEE80211_NODE_HT) + ieee80211_ht_node_cleanup(ni); +#ifdef IEEE80211_SUPPORT_SUPERG + /* Always do FF node cleanup; for A-MSDU */ + ieee80211_ff_node_cleanup(ni); +#endif +#ifdef IEEE80211_SUPPORT_MESH + /* + * Cleanup any mesh-related state. + */ + if (vap->iv_opmode == IEEE80211_M_MBSS) + ieee80211_mesh_node_cleanup(ni); +#endif + /* + * Clear any staging queue entries. + */ + ieee80211_ageq_drain_node(&ic->ic_stageq, ni); + + /* + * Clear AREF flag that marks the authorization refcnt bump + * has happened. This is probably not needed as the node + * should always be removed from the table so not found but + * do it just in case. + * Likewise clear the ASSOCID flag as these flags are intended + * to be managed in tandem. + */ + ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID); + + /* + * Drain power save queue and, if needed, clear TIM. + */ + if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL) + vap->iv_set_tim(ni, 0); + + ni->ni_associd = 0; + if (ni->ni_challenge != NULL) { + IEEE80211_FREE(ni->ni_challenge, M_80211_NODE); + ni->ni_challenge = NULL; + } + /* + * Preserve SSID, WPA, and WME ie's so the bss node is + * reusable during a re-auth/re-assoc state transition. + * If we remove these data they will not be recreated + * because they come from a probe-response or beacon frame + * which cannot be expected prior to the association-response. + * This should not be an issue when operating in other modes + * as stations leaving always go through a full state transition + * which will rebuild this state. + * + * XXX does this leave us open to inheriting old state? + */ + for (i = 0; i < nitems(ni->ni_rxfrag); i++) + if (ni->ni_rxfrag[i] != NULL) { + m_freem(ni->ni_rxfrag[i]); + ni->ni_rxfrag[i] = NULL; + } + /* + * Must be careful here to remove any key map entry w/o a LOR. + */ + ieee80211_node_delucastkey(ni); +} + +static void +node_free(struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + + ieee80211_ratectl_node_deinit(ni); + ic->ic_node_cleanup(ni); + ieee80211_ies_cleanup(&ni->ni_ies); + ieee80211_psq_cleanup(&ni->ni_psq); + IEEE80211_FREE(ni, M_80211_NODE); +} + +static void +node_age(struct ieee80211_node *ni) +{ + struct ieee80211vap *vap = ni->ni_vap; + + /* + * Age frames on the power save queue. + */ + if (ieee80211_node_psq_age(ni) != 0 && + ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL) + vap->iv_set_tim(ni, 0); + /* + * Age out HT resources (e.g. frames on the + * A-MPDU reorder queues). + */ + if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT)) + ieee80211_ht_node_age(ni); +} + +static int8_t +node_getrssi(const struct ieee80211_node *ni) +{ + uint32_t avgrssi = ni->ni_avgrssi; + int32_t rssi; + + if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) + return 0; + rssi = IEEE80211_RSSI_GET(avgrssi); + return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; +} + +static void +node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise) +{ + *rssi = node_getrssi(ni); + *noise = ni->ni_noise; +} + +static void +node_getmimoinfo(const struct ieee80211_node *ni, + struct ieee80211_mimo_info *info) +{ + int i; + uint32_t avgrssi; + int32_t rssi; + + bzero(info, sizeof(*info)); + + for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) { + /* Note: for now, just pri20 channel info */ + avgrssi = ni->ni_mimo_rssi_ctl[i]; + if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) { + info->ch[i].rssi[0] = 0; + } else { + rssi = IEEE80211_RSSI_GET(avgrssi); + info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; + } + info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i]; + } + + /* XXX ext radios? */ + + /* XXX EVM? */ +} + +static void +ieee80211_add_node_nt(struct ieee80211_node_table *nt, + struct ieee80211_node *ni) +{ + struct ieee80211com *ic = nt->nt_ic; + int hash; + + IEEE80211_NODE_LOCK_ASSERT(nt); + + hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr); + (void) ic; /* XXX IEEE80211_NODE_HASH */ + TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list); + LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash); + nt->nt_count++; + ni->ni_table = nt; +} + +static void +ieee80211_del_node_nt(struct ieee80211_node_table *nt, + struct ieee80211_node *ni) +{ + + IEEE80211_NODE_LOCK_ASSERT(nt); + + TAILQ_REMOVE(&nt->nt_node, ni, ni_list); + LIST_REMOVE(ni, ni_hash); + nt->nt_count--; + KASSERT(nt->nt_count >= 0, + ("nt_count is negative (%d)!\n", nt->nt_count)); + ni->ni_table = NULL; +} + +static struct ieee80211_node * +ieee80211_alloc_node(struct ieee80211_node_table *nt, + struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211com *ic = nt->nt_ic; + struct ieee80211_node *ni; + + ni = ic->ic_node_alloc(vap, macaddr); + if (ni == NULL) { + vap->iv_stats.is_rx_nodealloc++; + return NULL; + } + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, + "%s %p<%s> in %s table\n", __func__, ni, + ether_sprintf(macaddr), nt->nt_name); + + IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); + ieee80211_node_initref(ni); /* mark referenced */ +#ifdef IEEE80211_DEBUG_REFCNT + IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, + "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, + ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); +#endif + ni->ni_chan = IEEE80211_CHAN_ANYC; + ni->ni_authmode = IEEE80211_AUTH_OPEN; + ni->ni_txpower = ic->ic_txpowlimit; /* max power */ + ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; + ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); + ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; + ni->ni_inact_reload = nt->nt_inact_init; + ni->ni_inact = ni->ni_inact_reload; + ni->ni_ath_defkeyix = 0x7fff; + ieee80211_psq_init(&ni->ni_psq, "unknown"); +#ifdef IEEE80211_SUPPORT_MESH + if (vap->iv_opmode == IEEE80211_M_MBSS) + ieee80211_mesh_node_init(vap, ni); +#endif + IEEE80211_NODE_LOCK(nt); + ieee80211_add_node_nt(nt, ni); + ni->ni_vap = vap; + ni->ni_ic = ic; + IEEE80211_NODE_UNLOCK(nt); + + /* handle failure; free node state */ + if (ic->ic_node_init(ni) != 0) { + vap->iv_stats.is_rx_nodealloc++; + ieee80211_psq_cleanup(&ni->ni_psq); + ieee80211_ratectl_node_deinit(ni); + __ieee80211_free_node(ni); + return NULL; + } + + IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, + "%s: inact_reload %u", __func__, ni->ni_inact_reload); + + return ni; +} + +/* + * Craft a temporary node suitable for sending a management frame + * to the specified station. We craft only as much state as we + * need to do the work since the node will be immediately reclaimed + * once the send completes. + */ +struct ieee80211_node * +ieee80211_tmp_node(struct ieee80211vap *vap, + const uint8_t macaddr[IEEE80211_ADDR_LEN]) +{ + struct ieee80211com *ic = vap->iv_ic; + struct ieee80211_node *ni; + + ni = ic->ic_node_alloc(vap, macaddr); + if (ni != NULL) { + struct ieee80211_node *bss = vap->iv_bss; + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, + "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr)); + + ni->ni_table = NULL; /* NB: pedantic */ + ni->ni_ic = ic; /* NB: needed to set channel */ + ni->ni_vap = vap; + + IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); + IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); + ieee80211_node_initref(ni); /* mark referenced */ +#ifdef IEEE80211_DEBUG_REFCNT + /* Only one caller so we skip func/line passing into the func. */ + IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, + "%s (%s:%u) %p<%s> refcnt %d\n", __func__, "", -1, ni, + ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); +#endif + /* NB: required by ieee80211_fix_rate */ + ieee80211_node_set_chan(ni, bss->ni_chan); + ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, + IEEE80211_KEYIX_NONE); + ni->ni_txpower = bss->ni_txpower; + /* XXX optimize away */ + ieee80211_psq_init(&ni->ni_psq, "unknown"); + + ieee80211_ratectl_node_init(ni); + + /* handle failure; free node state */ + if (ic->ic_node_init(ni) != 0) { + vap->iv_stats.is_rx_nodealloc++; + ieee80211_psq_cleanup(&ni->ni_psq); + ieee80211_ratectl_node_deinit(ni); + __ieee80211_free_node(ni); + return NULL; + } + + } else { + /* XXX msg */ + vap->iv_stats.is_rx_nodealloc++; + } + return ni; +} + +struct ieee80211_node * +ieee80211_dup_bss(struct ieee80211vap *vap, + const uint8_t macaddr[IEEE80211_ADDR_LEN]) +{ + struct ieee80211com *ic = vap->iv_ic; + struct ieee80211_node *ni; + + ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr, __func__, __LINE__); + if (ni != NULL) { + struct ieee80211_node *bss = vap->iv_bss; + /* + * Inherit from iv_bss. + */ + copy_bss(ni, bss); + IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); + ieee80211_node_set_chan(ni, bss->ni_chan); + } + return ni; +} + +/* + * Create a bss node for a legacy WDS vap. The far end does + * not associate so we just create create a new node and + * simulate an association. The caller is responsible for + * installing the node as the bss node and handling any further + * setup work like authorizing the port. + */ +struct ieee80211_node * +ieee80211_node_create_wds(struct ieee80211vap *vap, + const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan) +{ + struct ieee80211com *ic = vap->iv_ic; + struct ieee80211_node *ni; + + /* XXX check if node already in sta table? */ + ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid, __func__, __LINE__); + if (ni != NULL) { + ni->ni_wdsvap = vap; + IEEE80211_ADDR_COPY(ni->ni_bssid, bssid); + /* + * Inherit any manually configured settings. + */ + copy_bss(ni, vap->iv_bss); + ieee80211_node_set_chan(ni, chan); + /* NB: propagate ssid so available to WPA supplicant */ + ni->ni_esslen = vap->iv_des_ssid[0].len; + memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); + /* NB: no associd for peer */ + /* + * There are no management frames to use to + * discover neighbor capabilities, so blindly + * propagate the local configuration. + */ + if (vap->iv_flags & IEEE80211_F_WME) + ni->ni_flags |= IEEE80211_NODE_QOS; +#ifdef IEEE80211_SUPPORT_SUPERG + if (vap->iv_flags & IEEE80211_F_FF) + ni->ni_flags |= IEEE80211_NODE_FF; +#endif + /* XXX VHT */ + if ((ic->ic_htcaps & IEEE80211_HTC_HT) && + (vap->iv_flags_ht & IEEE80211_FHT_HT)) { + /* + * Device is HT-capable and HT is enabled for + * the vap; setup HT operation. On return + * ni_chan will be adjusted to an HT channel. + */ + ieee80211_ht_wds_init(ni); + if (vap->iv_vht_flags & IEEE80211_FVHT_VHT) { + printf("%s: TODO: vht_wds_init\n", __func__); + } + } else { + struct ieee80211_channel *c = ni->ni_chan; + /* + * Force a legacy channel to be used. + */ + c = ieee80211_find_channel(ic, + c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT); + KASSERT(c != NULL, ("no legacy channel, %u/%x", + ni->ni_chan->ic_freq, ni->ni_chan->ic_flags)); + ni->ni_chan = c; + } + } + return ni; +} + +struct ieee80211_node * +_ieee80211_find_node_locked(struct ieee80211_node_table *nt, + const uint8_t macaddr[IEEE80211_ADDR_LEN], + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node *ni; + int hash; + + IEEE80211_NODE_LOCK_ASSERT(nt); + + hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); + LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { + if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { + ieee80211_ref_node(ni); /* mark referenced */ +#ifdef IEEE80211_DEBUG_REFCNT + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s (%s:%u) %p<%s> refcnt %d\n", __func__, + func, line, + ni, ether_sprintf(ni->ni_macaddr), + ieee80211_node_refcnt(ni)); +#endif + return ni; + } + } + return NULL; +} + +struct ieee80211_node * +_ieee80211_find_node(struct ieee80211_node_table *nt, + const uint8_t macaddr[IEEE80211_ADDR_LEN], + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node *ni; + + IEEE80211_NODE_LOCK(nt); + ni = _ieee80211_find_node_locked(nt, macaddr, func, line); + IEEE80211_NODE_UNLOCK(nt); + return ni; +} + +struct ieee80211_node * +_ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt, + const struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node *ni; + int hash; + + IEEE80211_NODE_LOCK_ASSERT(nt); + + hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); + LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { + if (ni->ni_vap == vap && + IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { + ieee80211_ref_node(ni); /* mark referenced */ +#ifdef IEEE80211_DEBUG_REFCNT + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s (%s:%u) %p<%s> refcnt %d\n", __func__, + func, line, + ni, ether_sprintf(ni->ni_macaddr), + ieee80211_node_refcnt(ni)); +#endif + return ni; + } + } + return NULL; +} + +struct ieee80211_node * +_ieee80211_find_vap_node(struct ieee80211_node_table *nt, + const struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node *ni; + + IEEE80211_NODE_LOCK(nt); + ni = _ieee80211_find_vap_node_locked(nt, vap, macaddr, func, line); + IEEE80211_NODE_UNLOCK(nt); + return ni; +} + +/* + * Fake up a node; this handles node discovery in adhoc mode. + * Note that for the driver's benefit we treat this like + * an association so the driver has an opportunity to setup + * it's private state. + */ +struct ieee80211_node * +ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, + const uint8_t macaddr[IEEE80211_ADDR_LEN]) +{ + struct ieee80211_node *ni; + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC, + "%s: mac<%s>\n", __func__, ether_sprintf(macaddr)); + ni = ieee80211_dup_bss(vap, macaddr); + if (ni != NULL) { + struct ieee80211com *ic = vap->iv_ic; + + /* XXX no rate negotiation; just dup */ + ni->ni_rates = vap->iv_bss->ni_rates; + if (ieee80211_iserp_rateset(&ni->ni_rates)) + ni->ni_flags |= IEEE80211_NODE_ERP; + if (vap->iv_opmode == IEEE80211_M_AHDEMO) { + /* + * In adhoc demo mode there are no management + * frames to use to discover neighbor capabilities, + * so blindly propagate the local configuration + * so we can do interesting things (e.g. use + * WME to disable ACK's). + */ + /* + * XXX TODO: 11n? + */ + if (vap->iv_flags & IEEE80211_F_WME) + ni->ni_flags |= IEEE80211_NODE_QOS; +#ifdef IEEE80211_SUPPORT_SUPERG + if (vap->iv_flags & IEEE80211_F_FF) + ni->ni_flags |= IEEE80211_NODE_FF; +#endif + } + ieee80211_node_setuptxparms(ni); + ieee80211_ratectl_node_init(ni); + + /* + * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX, + * not A-MPDU TX; not 11n rates, etc. We'll cycle + * that after we hear that we can indeed do 11n + * (either by a beacon frame or by a probe response.) + */ + + /* + * This is the first time we see the node. + */ + if (ic->ic_newassoc != NULL) + ic->ic_newassoc(ni, 1); + + /* + * Kick off a probe request to the given node; + * we will then use the probe response to update + * 11n/etc configuration state. + * + * XXX TODO: this isn't guaranteed, and until we get + * a probe response, we won't be able to actually + * do anything 802.11n related to the node. + * So if this does indeed work, maybe we should hold + * off on sending responses until we get the probe + * response, or just default to some sensible subset + * of 802.11n behaviour (eg always allow aggregation + * negotiation TO us, but not FROM us, etc) so we + * aren't entirely busted. + */ + if (vap->iv_opmode == IEEE80211_M_IBSS) { + ieee80211_send_probereq(ni, /* node */ + vap->iv_myaddr, /* SA */ + ni->ni_macaddr, /* DA */ + vap->iv_bss->ni_bssid, /* BSSID */ + vap->iv_bss->ni_essid, + vap->iv_bss->ni_esslen); /* SSID */ + } + + /* XXX not right for 802.1x/WPA */ + ieee80211_node_authorize(ni); + } + return ni; +} + +void +ieee80211_init_neighbor(struct ieee80211_node *ni, + const struct ieee80211_frame *wh, + const struct ieee80211_scanparams *sp) +{ + int do_ht_setup = 0, do_vht_setup = 0; + + ni->ni_esslen = sp->ssid[1]; + memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]); + IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3); + memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp)); + ni->ni_intval = sp->bintval; + ni->ni_capinfo = sp->capinfo; + ni->ni_chan = ni->ni_ic->ic_curchan; + ni->ni_fhdwell = sp->fhdwell; + ni->ni_fhindex = sp->fhindex; + ni->ni_erp = sp->erp; + ni->ni_timoff = sp->timoff; +#ifdef IEEE80211_SUPPORT_MESH + if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS) + ieee80211_mesh_init_neighbor(ni, wh, sp); +#endif + if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) { + ieee80211_ies_expand(&ni->ni_ies); + if (ni->ni_ies.wme_ie != NULL) + ni->ni_flags |= IEEE80211_NODE_QOS; + else + ni->ni_flags &= ~IEEE80211_NODE_QOS; +#ifdef IEEE80211_SUPPORT_SUPERG + if (ni->ni_ies.ath_ie != NULL) + ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); +#endif + if (ni->ni_ies.htcap_ie != NULL) + ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); + if (ni->ni_ies.htinfo_ie != NULL) + ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); + + if (ni->ni_ies.vhtcap_ie != NULL) + ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie); + if (ni->ni_ies.vhtopmode_ie != NULL) + ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie); + + if ((ni->ni_ies.htcap_ie != NULL) && + (ni->ni_ies.htinfo_ie != NULL) && + (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) { + do_ht_setup = 1; + } + + if ((ni->ni_ies.vhtcap_ie != NULL) && + (ni->ni_ies.vhtopmode_ie != NULL) && + (ni->ni_vap->iv_vht_flags & IEEE80211_FVHT_VHT)) { + do_vht_setup = 1; + } + } + + /* NB: must be after ni_chan is setup */ + ieee80211_setup_rates(ni, sp->rates, sp->xrates, + IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | + IEEE80211_F_DONEGO | IEEE80211_F_DODEL); + + /* + * If the neighbor is HT compatible, flip that on. + */ + if (do_ht_setup) { + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, + "%s: doing HT setup\n", __func__); + ieee80211_ht_node_init(ni); + ieee80211_ht_updateparams(ni, + ni->ni_ies.htcap_ie, + ni->ni_ies.htinfo_ie); + + if (do_vht_setup) { + if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { + printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n", + __func__, + ni->ni_macaddr, + ":"); + } else { + ieee80211_vht_node_init(ni); + ieee80211_vht_updateparams(ni, + ni->ni_ies.vhtcap_ie, + ni->ni_ies.vhtopmode_ie); + ieee80211_setup_vht_rates(ni); + } + } + + /* + * Finally do the channel upgrade/change based + * on the HT/VHT configuration. + */ + ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie, + ni->ni_ies.htinfo_ie); + ieee80211_setup_htrates(ni, + ni->ni_ies.htcap_ie, + IEEE80211_F_JOIN | IEEE80211_F_DOBRS); + ieee80211_setup_basic_htrates(ni, + ni->ni_ies.htinfo_ie); + + ieee80211_node_setuptxparms(ni); + ieee80211_ratectl_node_init(ni); + + /* Reassociate; we're now 11n/11ac */ + /* + * XXX TODO: this is the wrong thing to do - + * we're calling it with isnew=1 so the ath(4) + * driver reinitialises the rate tables. + * This "mostly" works for ath(4), but it won't + * be right for firmware devices which allocate + * node states. + * + * So, do we just create a new node and delete + * the old one? Or? + */ + if (ni->ni_ic->ic_newassoc) + ni->ni_ic->ic_newassoc(ni, 1); + } +} + +/* + * Do node discovery in adhoc mode on receipt of a beacon + * or probe response frame. Note that for the driver's + * benefit we treat this like an association so the + * driver has an opportunity to setup it's private state. + */ +struct ieee80211_node * +ieee80211_add_neighbor(struct ieee80211vap *vap, + const struct ieee80211_frame *wh, + const struct ieee80211_scanparams *sp) +{ + struct ieee80211_node *ni; + + IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, + "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2)); + ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */ + if (ni != NULL) { + struct ieee80211com *ic = vap->iv_ic; + + ieee80211_init_neighbor(ni, wh, sp); + if (ieee80211_iserp_rateset(&ni->ni_rates)) + ni->ni_flags |= IEEE80211_NODE_ERP; + ieee80211_node_setuptxparms(ni); + ieee80211_ratectl_node_init(ni); + if (ic->ic_newassoc != NULL) + ic->ic_newassoc(ni, 1); + /* XXX not right for 802.1x/WPA */ + ieee80211_node_authorize(ni); + } + return ni; +} + +#define IS_PROBEREQ(wh) \ + ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \ + == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) +#define IS_BCAST_PROBEREQ(wh) \ + (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \ + ((const struct ieee80211_frame *)(wh))->i_addr3)) + +static __inline struct ieee80211_node * +_find_rxnode(struct ieee80211_node_table *nt, + const struct ieee80211_frame_min *wh, + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + if (IS_BCAST_PROBEREQ(wh)) + return NULL; /* spam bcast probe req to all vap's */ + return _ieee80211_find_node_locked(nt, wh->i_addr2, func, line); +} + +/* + * Locate the node for sender, track state, and then pass the + * (referenced) node up to the 802.11 layer for its use. Note + * we can return NULL if the sender is not in the table. + */ +struct ieee80211_node * +_ieee80211_find_rxnode(struct ieee80211com *ic, + const struct ieee80211_frame_min *wh, + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node_table *nt; + struct ieee80211_node *ni; + + nt = &ic->ic_sta; + IEEE80211_NODE_LOCK(nt); + ni = _find_rxnode(nt, wh, func, line); + IEEE80211_NODE_UNLOCK(nt); + + return ni; +} + +/* + * Like ieee80211_find_rxnode but use the supplied h/w + * key index as a hint to locate the node in the key + * mapping table. If an entry is present at the key + * index we return it; otherwise do a normal lookup and + * update the mapping table if the station has a unicast + * key assigned to it. + */ +struct ieee80211_node * +_ieee80211_find_rxnode_withkey(struct ieee80211com *ic, + const struct ieee80211_frame_min *wh, ieee80211_keyix keyix, + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node_table *nt; + struct ieee80211_node *ni; + + nt = &ic->ic_sta; + IEEE80211_NODE_LOCK(nt); + if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) + ni = nt->nt_keyixmap[keyix]; + else + ni = NULL; + if (ni == NULL) { + ni = _find_rxnode(nt, wh, func, line); + if (ni != NULL && nt->nt_keyixmap != NULL) { + /* + * If the station has a unicast key cache slot + * assigned update the key->node mapping table. + */ + keyix = ni->ni_ucastkey.wk_rxkeyix; + /* XXX can keyixmap[keyix] != NULL? */ + if (keyix < nt->nt_keyixmax && + nt->nt_keyixmap[keyix] == NULL) { + IEEE80211_DPRINTF(ni->ni_vap, + IEEE80211_MSG_NODE, + "%s: add key map entry %p<%s> refcnt %d\n", + __func__, ni, ether_sprintf(ni->ni_macaddr), + ieee80211_node_refcnt(ni)+1); + nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni); + } + } + } else { + if (IS_BCAST_PROBEREQ(wh)) + ni = NULL; /* spam bcast probe req to all vap's */ + else + ieee80211_ref_node(ni); + } + IEEE80211_NODE_UNLOCK(nt); + + return ni; +} +#undef IS_BCAST_PROBEREQ +#undef IS_PROBEREQ + +/* + * Return a reference to the appropriate node for sending + * a data frame. This handles node discovery in adhoc networks. + */ +struct ieee80211_node * +_ieee80211_find_txnode(struct ieee80211vap *vap, + const uint8_t macaddr[IEEE80211_ADDR_LEN], + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; + struct ieee80211_node *ni; + + /* + * The destination address should be in the node table + * unless this is a multicast/broadcast frame. We can + * also optimize station mode operation, all frames go + * to the bss node. + */ + /* XXX can't hold lock across dup_bss 'cuz of recursive locking */ + IEEE80211_NODE_LOCK(nt); + if (vap->iv_opmode == IEEE80211_M_STA || + vap->iv_opmode == IEEE80211_M_WDS || + IEEE80211_IS_MULTICAST(macaddr)) + ni = ieee80211_ref_node(vap->iv_bss); + else + ni = _ieee80211_find_node_locked(nt, macaddr, func, line); + IEEE80211_NODE_UNLOCK(nt); + + if (ni == NULL) { + if (vap->iv_opmode == IEEE80211_M_IBSS || + vap->iv_opmode == IEEE80211_M_AHDEMO) { + /* + * In adhoc mode cons up a node for the destination. + * Note that we need an additional reference for the + * caller to be consistent with + * ieee80211_find_node_locked. + */ + /* + * XXX TODO: this doesn't fake up 11n state; we need + * to find another way to get it upgraded. + */ + ni = ieee80211_fakeup_adhoc_node(vap, macaddr); + if (ni != NULL) + (void) ieee80211_ref_node(ni); + } else { + IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr, + "no node, discard frame (%s)", __func__); + vap->iv_stats.is_tx_nonode++; + } + } + return ni; +} + +struct ieee80211_node * +_ieee80211_ref_node(struct ieee80211_node *ni, + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + +#ifdef IEEE80211_DEBUG_REFCNT + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, + ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); +#endif + ieee80211_node_incref(ni); + return (ni); +} + +static void +__ieee80211_free_node(struct ieee80211_node *ni) +{ + struct ieee80211_node_table *nt = ni->ni_table; + + /* + * NB: careful about referencing the vap as it may be + * gone if the last reference was held by a driver. + * We know the com will always be present so it's safe + * to use ni_ic below to reclaim resources. + */ +#if 0 + IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, + "%s %p<%s> in %s table\n", __func__, ni, + ether_sprintf(ni->ni_macaddr), + nt != NULL ? nt->nt_name : "<gone>"); +#endif + if (ni->ni_associd != 0) { + struct ieee80211vap *vap = ni->ni_vap; + if (vap->iv_aid_bitmap != NULL) + IEEE80211_AID_CLR(vap, ni->ni_associd); + } + if (nt != NULL) + ieee80211_del_node_nt(nt, ni); + ni->ni_ic->ic_node_free(ni); +} + +/* + * Clear any entry in the unicast key mapping table. + */ +static int +node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni) +{ + ieee80211_keyix keyix; + + keyix = ni->ni_ucastkey.wk_rxkeyix; + if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax && + nt->nt_keyixmap[keyix] == ni) { + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s: %p<%s> clear key map entry %u\n", + __func__, ni, ether_sprintf(ni->ni_macaddr), keyix); + nt->nt_keyixmap[keyix] = NULL; + ieee80211_node_decref(ni); + return 1; + } + + return 0; +} + +void +_ieee80211_free_node(struct ieee80211_node *ni, + const char *func __debrefcnt_used, int line __debrefcnt_used) +{ + struct ieee80211_node_table *nt = ni->ni_table; + +#ifdef IEEE80211_DEBUG_REFCNT + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, + ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); +#endif + if (nt != NULL) { + IEEE80211_NODE_LOCK(nt); + if (ieee80211_node_dectestref(ni)) { + /* + * Last reference, reclaim state. + */ + __ieee80211_free_node(ni); + } else if (ieee80211_node_refcnt(ni) == 1) + if (node_clear_keyixmap(nt, ni)) + __ieee80211_free_node(ni); + IEEE80211_NODE_UNLOCK(nt); + } else { + if (ieee80211_node_dectestref(ni)) + __ieee80211_free_node(ni); + } +} + +/* + * Reclaim a unicast key and clear any key cache state. + */ +int +ieee80211_node_delucastkey(struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211_node_table *nt = &ic->ic_sta; + struct ieee80211_node *nikey; + ieee80211_keyix keyix; + int isowned, status; + + /* + * NB: We must beware of LOR here; deleting the key + * can cause the crypto layer to block traffic updates + * which can generate a LOR against the node table lock; + * grab it here and stash the key index for our use below. + * + * Must also beware of recursion on the node table lock. + * When called from node_cleanup we may already have + * the node table lock held. Unfortunately there's no + * way to separate out this path so we must do this + * conditionally. + */ + isowned = IEEE80211_NODE_IS_LOCKED(nt); + if (!isowned) + IEEE80211_NODE_LOCK(nt); + nikey = NULL; + status = 1; /* NB: success */ + if (!IEEE80211_KEY_UNDEFINED(&ni->ni_ucastkey)) { + keyix = ni->ni_ucastkey.wk_rxkeyix; + status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey); + if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) { + nikey = nt->nt_keyixmap[keyix]; + nt->nt_keyixmap[keyix] = NULL; + } + } + if (!isowned) + IEEE80211_NODE_UNLOCK(nt); + + if (nikey != NULL) { + KASSERT(nikey == ni, + ("key map out of sync, ni %p nikey %p", ni, nikey)); + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s: delete key map entry %p<%s> refcnt %d\n", + __func__, ni, ether_sprintf(ni->ni_macaddr), + ieee80211_node_refcnt(ni)-1); + ieee80211_free_node(ni); + } + return status; +} + +/* + * Reclaim a node. If this is the last reference count then + * do the normal free work. Otherwise remove it from the node + * table and mark it gone by clearing the back-reference. + */ +static void +node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni) +{ + + IEEE80211_NODE_LOCK_ASSERT(nt); + + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, + "%s: remove %p<%s> from %s table, refcnt %d\n", + __func__, ni, ether_sprintf(ni->ni_macaddr), + nt->nt_name, ieee80211_node_refcnt(ni)-1); + /* + * Clear any entry in the unicast key mapping table. + * We need to do it here so rx lookups don't find it + * in the mapping table even if it's not in the hash + * table. We cannot depend on the mapping table entry + * being cleared because the node may not be free'd. + */ + (void)node_clear_keyixmap(nt, ni); + if (!ieee80211_node_dectestref(ni)) { + /* + * Other references are present, just remove the + * node from the table so it cannot be found. When + * the references are dropped storage will be + * reclaimed. + */ + ieee80211_del_node_nt(nt, ni); + } else + __ieee80211_free_node(ni); +} + +/* + * Node table support. + */ + +static void +ieee80211_node_table_init(struct ieee80211com *ic, + struct ieee80211_node_table *nt, + const char *name, int inact, int keyixmax) +{ + + nt->nt_ic = ic; + IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name); + TAILQ_INIT(&nt->nt_node); + nt->nt_count = 0; + nt->nt_name = name; + nt->nt_inact_init = inact; + nt->nt_keyixmax = keyixmax; + if (nt->nt_keyixmax > 0) { + nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC( + keyixmax * sizeof(struct ieee80211_node *), + M_80211_NODE, + IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); + if (nt->nt_keyixmap == NULL) + ic_printf(ic, + "Cannot allocate key index map with %u entries\n", + keyixmax); + } else + nt->nt_keyixmap = NULL; +} + +static void +ieee80211_node_table_reset(struct ieee80211_node_table *nt, + struct ieee80211vap *match) +{ + struct ieee80211_node *ni, *next; + + IEEE80211_NODE_LOCK(nt); + TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) { + if (match != NULL && ni->ni_vap != match) + continue; + /* XXX can this happen? if so need's work */ + if (ni->ni_associd != 0) { + struct ieee80211vap *vap = ni->ni_vap; + + if (vap->iv_auth->ia_node_leave != NULL) + vap->iv_auth->ia_node_leave(ni); + if (vap->iv_aid_bitmap != NULL) + IEEE80211_AID_CLR(vap, ni->ni_associd); + } + ni->ni_wdsvap = NULL; /* clear reference */ + node_reclaim(nt, ni); + } + if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) { + /* + * Make a separate pass to clear references to this vap + * held by DWDS entries. They will not be matched above + * because ni_vap will point to the ap vap but we still + * need to clear ni_wdsvap when the WDS vap is destroyed + * and/or reset. + */ + TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) + if (ni->ni_wdsvap == match) + ni->ni_wdsvap = NULL; + } + IEEE80211_NODE_UNLOCK(nt); +} + +static void +ieee80211_node_table_cleanup(struct ieee80211_node_table *nt) +{ + ieee80211_node_table_reset(nt, NULL); + if (nt->nt_keyixmap != NULL) { +#ifdef DIAGNOSTIC + /* XXX verify all entries are NULL */ + int i; + for (i = 0; i < nt->nt_keyixmax; i++) + if (nt->nt_keyixmap[i] != NULL) + printf("%s: %s[%u] still active\n", __func__, + nt->nt_name, i); +#endif + IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE); + nt->nt_keyixmap = NULL; + } + IEEE80211_NODE_LOCK_DESTROY(nt); +} + +static void +timeout_stations(void *arg __unused, struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211vap *vap = ni->ni_vap; + + /* + * Only process stations when in RUN state. This + * insures, for example, that we don't timeout an + * inactive station during CAC. Note that CSA state + * is actually handled in ieee80211_node_timeout as + * it applies to more than timeout processing. + */ + if (vap->iv_state != IEEE80211_S_RUN) + return; + /* + * Ignore entries for which have yet to receive an + * authentication frame. These are transient and + * will be reclaimed when the last reference to them + * goes away (when frame xmits complete). + */ + if ((vap->iv_opmode == IEEE80211_M_HOSTAP || + vap->iv_opmode == IEEE80211_M_STA) && + (ni->ni_flags & IEEE80211_NODE_AREF) == 0) + return; + /* + * Free fragment if not needed anymore + * (last fragment older than 1s). + * XXX doesn't belong here, move to node_age + */ + if (ni->ni_rxfrag[0] != NULL && + ticks > ni->ni_rxfragstamp + hz) { + m_freem(ni->ni_rxfrag[0]); + ni->ni_rxfrag[0] = NULL; + } + if (ni->ni_inact > 0) { + ni->ni_inact--; + IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, + "%s: inact %u inact_reload %u nrates %u", + __func__, ni->ni_inact, ni->ni_inact_reload, + ni->ni_rates.rs_nrates); + } + /* + * Special case ourself; we may be idle for extended periods + * of time and regardless reclaiming our state is wrong. + * XXX run ic_node_age + */ + /* XXX before inact decrement? */ + if (ni == vap->iv_bss) + return; + if (ni->ni_associd != 0 || + (vap->iv_opmode == IEEE80211_M_IBSS || + vap->iv_opmode == IEEE80211_M_AHDEMO)) { + /* + * Age/drain resources held by the station. + */ + ic->ic_node_age(ni); + /* + * Probe the station before time it out. We + * send a null data frame which may not be + * universally supported by drivers (need it + * for ps-poll support so it should be...). + * + * XXX don't probe the station unless we've + * received a frame from them (and have + * some idea of the rates they are capable + * of); this will get fixed more properly + * soon with better handling of the rate set. + */ + if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && + (0 < ni->ni_inact && + ni->ni_inact <= vap->iv_inact_probe) && + ni->ni_rates.rs_nrates != 0) { + IEEE80211_NOTE(vap, + IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, + ni, "%s", + "probe station due to inactivity"); + /* + * Grab a reference so the node cannot + * be reclaimed before we send the frame. + * ieee80211_send_nulldata understands + * we've done this and reclaims the + * ref for us as needed. + */ + /* XXX fix this (not required anymore). */ + ieee80211_ref_node(ni); + /* XXX useless */ + ieee80211_send_nulldata(ni); + /* XXX stat? */ + return; + } + } + if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && + ni->ni_inact <= 0) { + IEEE80211_NOTE(vap, + IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, + "station timed out due to inactivity " + "(refcnt %u)", ieee80211_node_refcnt(ni)); + /* + * Send a deauthenticate frame and drop the station. + * This is somewhat complicated due to reference counts + * and locking. At this point a station will typically + * have a reference count of 2. ieee80211_node_leave + * will do a "free" of the node which will drop the + * reference count. But in the meantime a reference + * wil be held by the deauth frame. The actual reclaim + * of the node will happen either after the tx is + * completed or by ieee80211_node_leave. + */ + if (ni->ni_associd != 0) { + IEEE80211_SEND_MGMT(ni, + IEEE80211_FC0_SUBTYPE_DEAUTH, + IEEE80211_REASON_AUTH_EXPIRE); + } + ieee80211_node_leave(ni); + vap->iv_stats.is_node_timeout++; + } +} + +/* + * Timeout inactive stations and do related housekeeping. + */ +static void +ieee80211_timeout_stations(struct ieee80211com *ic) +{ + struct ieee80211_node_table *nt = &ic->ic_sta; + + ieee80211_iterate_nodes(nt, timeout_stations, NULL); +} + +/* + * Aggressively reclaim resources. This should be used + * only in a critical situation to reclaim mbuf resources. + */ +void +ieee80211_drain(struct ieee80211com *ic) +{ + struct ieee80211_node_table *nt = &ic->ic_sta; + struct ieee80211vap *vap; + struct ieee80211_node *ni; + + IEEE80211_NODE_LOCK(nt); + TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { + /* + * Ignore entries for which have yet to receive an + * authentication frame. These are transient and + * will be reclaimed when the last reference to them + * goes away (when frame xmits complete). + */ + vap = ni->ni_vap; + /* + * Only process stations when in RUN state. This + * insures, for example, that we don't timeout an + * inactive station during CAC. Note that CSA state + * is actually handled in ieee80211_node_timeout as + * it applies to more than timeout processing. + */ + if (vap->iv_state != IEEE80211_S_RUN) + continue; + /* XXX can vap be NULL? */ + if ((vap->iv_opmode == IEEE80211_M_HOSTAP || + vap->iv_opmode == IEEE80211_M_STA) && + (ni->ni_flags & IEEE80211_NODE_AREF) == 0) + continue; + /* + * Free fragments. + * XXX doesn't belong here, move to node_drain + */ + if (ni->ni_rxfrag[0] != NULL) { + m_freem(ni->ni_rxfrag[0]); + ni->ni_rxfrag[0] = NULL; + } + /* + * Drain resources held by the station. + */ + ic->ic_node_drain(ni); + } + IEEE80211_NODE_UNLOCK(nt); +} + +/* + * Per-ieee80211vap inactivity timer callback. + */ +static void +ieee80211_vap_timeout(struct ieee80211vap *vap) +{ + + IEEE80211_LOCK_ASSERT(vap->iv_ic); + + ieee80211_vap_erp_timeout(vap); + ieee80211_ht_timeout(vap); + ieee80211_vht_timeout(vap); +} + +/* + * Per-ieee80211com inactivity timer callback. + */ +void +ieee80211_node_timeout(void *arg) +{ + struct ieee80211com *ic = arg; + struct ieee80211vap *vap; + + /* + * Defer timeout processing if a channel switch is pending. + * We typically need to be mute so not doing things that + * might generate frames is good to handle in one place. + * Suppressing the station timeout processing may extend the + * lifetime of inactive stations (by not decrementing their + * idle counters) but this should be ok unless the CSA is + * active for an unusually long time. + */ + if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { + ieee80211_scan_timeout(ic); + ieee80211_timeout_stations(ic); + ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT); + + IEEE80211_LOCK(ic); + TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) + ieee80211_vap_timeout(vap); + IEEE80211_UNLOCK(ic); + } + callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, + ieee80211_node_timeout, ic); +} + +/* + * The same as ieee80211_iterate_nodes(), but for one vap only. + */ +int +ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt, + struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg) +{ + struct ieee80211_node **ni_arr; + struct ieee80211_node *ni; + size_t size; + int count, i; + + /* + * Iterate over the node table and save an array of ref'ed nodes. + * + * This is separated out from calling the actual node function so that + * no LORs will occur. + */ + IEEE80211_NODE_LOCK(nt); + count = nt->nt_count; + size = count * sizeof(struct ieee80211_node *); + ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE, + IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); + if (ni_arr == NULL) { + IEEE80211_NODE_UNLOCK(nt); + return (ENOMEM); + } + + i = 0; + TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { + if (vap != NULL && ni->ni_vap != vap) + continue; + KASSERT(i < count, + ("node array overflow (vap %p, i %d, count %d)\n", + vap, i, count)); + ni_arr[i] = ieee80211_ref_node(ni); + i++; + } + IEEE80211_NODE_UNLOCK(nt); + + for (i = 0; i < count; i++) { + if (ni_arr[i] == NULL) /* end of the list */ + break; + (*f)(arg, ni_arr[i]); + /* ieee80211_free_node() locks by itself */ + ieee80211_free_node(ni_arr[i]); + } + + IEEE80211_FREE(ni_arr, M_80211_NODE); + + return (0); +} + +/* + * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes() + * reference in the source. + */ +void +ieee80211_iterate_nodes(struct ieee80211_node_table *nt, + ieee80211_iter_func *f, void *arg) +{ + /* XXX no way to pass error to the caller. */ + (void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg); +} + +void +ieee80211_dump_node(struct ieee80211_node_table *nt __unused, + struct ieee80211_node *ni) +{ + printf("%p: mac %s refcnt %d\n", ni, + ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); + printf("\tauthmode %u flags 0x%x\n", + ni->ni_authmode, ni->ni_flags); + printf("\tassocid 0x%x txpower %u vlan %u\n", + ni->ni_associd, ni->ni_txpower, ni->ni_vlan); + printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n", + ni->ni_txseqs[IEEE80211_NONQOS_TID], + ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT, + ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK, + ni->ni_rxfragstamp); + printf("\trssi %d noise %d intval %u capinfo 0x%x\n", + node_getrssi(ni), ni->ni_noise, + ni->ni_intval, ni->ni_capinfo); + printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n", + ether_sprintf(ni->ni_bssid), + ni->ni_esslen, ni->ni_essid, + (ni->ni_chan != IEEE80211_CHAN_ANYC) ? ni->ni_chan->ic_freq : 0, + (ni->ni_chan != IEEE80211_CHAN_ANYC) ? ni->ni_chan->ic_flags : 0); + printf("\tinact %u inact_reload %u txrate type %d dot11rate %u\n", + ni->ni_inact, ni->ni_inact_reload, + ni->ni_txrate.type, + ni->ni_txrate.dot11rate); + printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n", + ni->ni_htcap, ni->ni_htparam, + ni->ni_htctlchan, ni->ni_ht2ndchan); + printf("\thtopmode %x htstbc %x htchw %d (%s)\n", + ni->ni_htopmode, ni->ni_htstbc, + ni->ni_chw, ieee80211_ni_chw_to_str(ni->ni_chw)); + printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n", + ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2, + (int) ni->ni_vht_basicmcs); + /* XXX VHT state */ +} + +void +ieee80211_dump_nodes(struct ieee80211_node_table *nt) +{ + ieee80211_iterate_nodes(nt, + (ieee80211_iter_func *) ieee80211_dump_node, nt); +} + +/* + * Iterate over the VAPs and update their ERP beacon IEs. + * + * Note this must be called from the deferred ERP update task paths. + */ +void +ieee80211_notify_erp_locked(struct ieee80211com *ic) +{ + struct ieee80211vap *vap; + + IEEE80211_LOCK_ASSERT(ic); + + TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) + if (vap->iv_opmode == IEEE80211_M_HOSTAP) + ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP); +} + +/* + * Handle a station joining an 11g network. + */ +static void +ieee80211_node_join_11g(struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211vap *vap = ni->ni_vap; + + IEEE80211_LOCK_ASSERT(ic); + + /* + * Station isn't capable of short slot time. Bump + * the count of long slot time stations and disable + * use of short slot time. Note that the actual switch + * over to long slot time use may not occur until the + * next beacon transmission (per sec. 7.3.1.4 of 11g). + */ + if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { + vap->iv_longslotsta++; + IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, + "station needs long slot time, count %d", + vap->iv_longslotsta); + /* + * XXX TODO: this may need all VAPs checked! + */ + if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) { + /* + * Don't force slot time when switched to turbo + * mode as non-ERP stations won't be present; this + * need only be done when on the normal G channel. + */ + ieee80211_vap_set_shortslottime(vap, 0); + } + } + /* + * If the new station is not an ERP station + * then bump the counter and enable protection + * if configured. + */ + if (!ieee80211_iserp_rateset(&ni->ni_rates)) { + vap->iv_nonerpsta++; + IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, + "station is !ERP, %d non-ERP stations associated", + vap->iv_nonerpsta); + /* + * If station does not support short preamble + * then we must enable use of Barker preamble. + */ + if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) { + IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, + "%s", "station needs long preamble"); + vap->iv_flags |= IEEE80211_F_USEBARKER; + vap->iv_flags &= ~IEEE80211_F_SHPREAMBLE; + ieee80211_vap_update_preamble(vap); + } + /* + * If protection is configured and this is the first + * indication we should use protection, enable it. + */ + if (vap->iv_protmode != IEEE80211_PROT_NONE && + vap->iv_nonerpsta == 1 && + (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, + "%s: enable use of protection\n", __func__); + vap->iv_flags |= IEEE80211_F_USEPROT; + ieee80211_vap_update_erp_protmode(vap); + } + } else + ni->ni_flags |= IEEE80211_NODE_ERP; +} + +void +ieee80211_node_join(struct ieee80211_node *ni, int resp) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211vap *vap = ni->ni_vap; + int newassoc; + + if (ni->ni_associd == 0) { + uint16_t aid; + + KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap")); + /* + * It would be good to search the bitmap + * more efficiently, but this will do for now. + */ + for (aid = 1; aid < vap->iv_max_aid; aid++) { + if (!IEEE80211_AID_ISSET(vap, aid)) + break; + } + if (aid >= vap->iv_max_aid) { + IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY); + ieee80211_node_leave(ni); + return; + } + ni->ni_associd = aid | 0xc000; + ni->ni_jointime = time_uptime; + IEEE80211_LOCK(ic); + IEEE80211_AID_SET(vap, ni->ni_associd); + vap->iv_sta_assoc++; + + if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) + ieee80211_ht_node_join(ni); + if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan)) + ieee80211_vht_node_join(ni); + if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && + IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) + ieee80211_node_join_11g(ni); + IEEE80211_UNLOCK(ic); + + newassoc = 1; + } else + newassoc = 0; + + /* + * XXX VHT - should log VHT channel width, etc + */ + IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, + "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s%s", + IEEE80211_NODE_AID(ni), + vap->iv_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long", + vap->iv_flags & IEEE80211_F_SHSLOT ? "short" : "long", + vap->iv_flags & IEEE80211_F_USEPROT ? ", protection" : "", + ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", + /* XXX update for VHT string */ + ni->ni_flags & IEEE80211_NODE_HT ? + (ni->ni_chw == IEEE80211_STA_RX_BW_40 ? ", HT40" : ", HT20") : "", + ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", + ni->ni_flags & IEEE80211_NODE_AMSDU ? " (+AMSDU)" : "", + ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : + ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", + ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", + IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? + ", fast-frames" : "", + IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? + ", turbo" : "" + ); + + ieee80211_node_setuptxparms(ni); + ieee80211_ratectl_node_init(ni); + /* give driver a chance to setup state like ni_txrate */ + if (ic->ic_newassoc != NULL) + ic->ic_newassoc(ni, newassoc); + IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS); + /* tell the authenticator about new station */ + if (vap->iv_auth->ia_node_join != NULL) + vap->iv_auth->ia_node_join(ni); + ieee80211_notify_node_join(ni, + resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); +} + +static void +disable_protection(struct ieee80211vap *vap) +{ + struct ieee80211com *ic = vap->iv_ic; + + KASSERT(vap->iv_nonerpsta == 0 && + (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0, + ("%d non ERP stations, flags 0x%x", vap->iv_nonerpsta, + vap->iv_flags_ext)); + + vap->iv_flags &= ~IEEE80211_F_USEPROT; + /* XXX verify mode? */ + if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) { + vap->iv_flags |= IEEE80211_F_SHPREAMBLE; + vap->iv_flags &= ~IEEE80211_F_USEBARKER; + } + ieee80211_vap_update_erp_protmode(vap); + ieee80211_vap_update_preamble(vap); +} + +/* + * Handle a station leaving an 11g network. + */ +static void +ieee80211_node_leave_11g(struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211vap *vap = ni->ni_vap; + + IEEE80211_LOCK_ASSERT(ic); + + KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan), + ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq, + ic->ic_bsschan->ic_flags)); + + /* + * If a long slot station do the slot time bookkeeping. + */ + if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { + KASSERT(vap->iv_longslotsta > 0, + ("bogus long slot station count %d", vap->iv_longslotsta)); + vap->iv_longslotsta--; + IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, + "long slot time station leaves, count now %d", + vap->iv_longslotsta); + /* + * XXX TODO: this may need all VAPs checked! + */ + if (vap->iv_longslotsta == 0) { + /* + * Re-enable use of short slot time if supported + * and not operating in IBSS mode (per spec). + */ + if ((ic->ic_caps & IEEE80211_C_SHSLOT) && + ic->ic_opmode != IEEE80211_M_IBSS) { + IEEE80211_DPRINTF(ni->ni_vap, + IEEE80211_MSG_ASSOC, + "%s: re-enable use of short slot time\n", + __func__); + ieee80211_vap_set_shortslottime(vap, 1); + } + } + } + /* + * If a non-ERP station do the protection-related bookkeeping. + */ + if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) { + KASSERT(vap->iv_nonerpsta > 0, + ("bogus non-ERP station count %d", vap->iv_nonerpsta)); + vap->iv_nonerpsta--; + IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, + "non-ERP station leaves, count now %d%s", vap->iv_nonerpsta, + (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) ? + " (non-ERP sta present)" : ""); + if (vap->iv_nonerpsta == 0 && + (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { + IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, + "%s: disable use of protection\n", __func__); + disable_protection(vap); + } + } +} + +/* + * Time out presence of an overlapping bss with non-ERP + * stations. When operating in hostap mode we listen for + * beacons from other stations and if we identify a non-ERP + * station is present we enable protection. To identify + * when all non-ERP stations are gone we time out this + * condition. + */ +static void +ieee80211_vap_erp_timeout(struct ieee80211vap *vap) +{ + + IEEE80211_LOCK_ASSERT(vap->iv_ic); + + if ((vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) && + ieee80211_time_after(ticks, vap->iv_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, + "%s", "age out non-ERP sta present on channel"); + vap->iv_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; + if (vap->iv_nonerpsta == 0) + disable_protection(vap); + } +} + +/* + * Handle bookkeeping for station deauthentication/disassociation + * when operating as an ap. + */ +void +ieee80211_node_leave(struct ieee80211_node *ni) +{ + struct ieee80211com *ic = ni->ni_ic; + struct ieee80211vap *vap = ni->ni_vap; + struct ieee80211_node_table *nt = ni->ni_table; + + IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, + "station with aid %d leaves", IEEE80211_NODE_AID(ni)); + + KASSERT(vap->iv_opmode != IEEE80211_M_STA, + ("unexpected operating mode %u", vap->iv_opmode)); + /* + * If node wasn't previously associated all + * we need to do is reclaim the reference. + */ + /* XXX ibss mode bypasses 11g and notification */ + if (ni->ni_associd == 0) + goto done; + /* + * Tell the authenticator the station is leaving. + * Note that we must do this before yanking the + * association id as the authenticator uses the + * associd to locate it's state block. + */ + if (vap->iv_auth->ia_node_leave != NULL) + vap->iv_auth->ia_node_leave(ni); + + IEEE80211_LOCK(ic); + IEEE80211_AID_CLR(vap, ni->ni_associd); + vap->iv_sta_assoc--; + + if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan)) + ieee80211_vht_node_leave(ni); + if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) + ieee80211_ht_node_leave(ni); + if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && + IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) + ieee80211_node_leave_11g(ni); + IEEE80211_UNLOCK(ic); + /* + * Cleanup station state. In particular clear various + * state that might otherwise be reused if the node + * is reused before the reference count goes to zero + * (and memory is reclaimed). + */ + ieee80211_sta_leave(ni); +done: + /* + * Remove the node from any table it's recorded in and + * drop the caller's reference. Removal from the table + * is important to insure the node is not reprocessed + * for inactivity. + */ + if (nt != NULL) { + IEEE80211_NODE_LOCK(nt); + node_reclaim(nt, ni); + IEEE80211_NODE_UNLOCK(nt); + } else + ieee80211_free_node(ni); +} + +struct rssiinfo { + int rssi_samples; + uint32_t rssi_total; +}; + +static void +get_hostap_rssi(void *arg, struct ieee80211_node *ni) +{ + struct rssiinfo *info = arg; + struct ieee80211vap *vap = ni->ni_vap; + int8_t rssi; + + /* only associated stations */ + if (ni->ni_associd == 0) + return; + rssi = vap->iv_ic->ic_node_getrssi(ni); + if (rssi != 0) { + info->rssi_samples++; + info->rssi_total += rssi; + } +} + +static void +get_adhoc_rssi(void *arg, struct ieee80211_node *ni) +{ + struct rssiinfo *info = arg; + struct ieee80211vap *vap = ni->ni_vap; + int8_t rssi; + + /* only neighbors */ + /* XXX check bssid */ + if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) + return; + rssi = vap->iv_ic->ic_node_getrssi(ni); + if (rssi != 0) { + info->rssi_samples++; + info->rssi_total += rssi; + } +} + +#ifdef IEEE80211_SUPPORT_MESH +static void +get_mesh_rssi(void *arg, struct ieee80211_node *ni) +{ + struct rssiinfo *info = arg; + struct ieee80211vap *vap = ni->ni_vap; + int8_t rssi; + + /* only neighbors that peered successfully */ + if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) + return; + rssi = vap->iv_ic->ic_node_getrssi(ni); + if (rssi != 0) { + info->rssi_samples++; + info->rssi_total += rssi; + } +} +#endif /* IEEE80211_SUPPORT_MESH */ + +int8_t +ieee80211_getrssi(struct ieee80211vap *vap) +{ +#define NZ(x) ((x) == 0 ? 1 : (x)) + struct ieee80211com *ic = vap->iv_ic; + struct rssiinfo info; + + info.rssi_total = 0; + info.rssi_samples = 0; + switch (vap->iv_opmode) { + case IEEE80211_M_IBSS: /* average of all ibss neighbors */ + case IEEE80211_M_AHDEMO: /* average of all neighbors */ + ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi, + &info); + break; + case IEEE80211_M_HOSTAP: /* average of all associated stations */ + ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi, + &info); + break; +#ifdef IEEE80211_SUPPORT_MESH + case IEEE80211_M_MBSS: /* average of all mesh neighbors */ + ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi, + &info); + break; +#endif + case IEEE80211_M_MONITOR: /* XXX */ + case IEEE80211_M_STA: /* use stats from associated ap */ + default: + if (vap->iv_bss != NULL) + info.rssi_total = ic->ic_node_getrssi(vap->iv_bss); + info.rssi_samples = 1; + break; + } + return info.rssi_total / NZ(info.rssi_samples); +#undef NZ +} + +void +ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise) +{ + + if (vap->iv_bss == NULL) /* NB: shouldn't happen */ + return; + vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise); + /* for non-station mode return avg'd rssi accounting */ + if (vap->iv_opmode != IEEE80211_M_STA) + *rssi = ieee80211_getrssi(vap); +} + +/** + * @brief return a dot11rate / ratecode representing the current transmit rate + * + * This is the API call for legacy / 802.11n drivers and rate control APIs + * which expect a dot11rate / ratecode representation for legacy and HT MCS + * rates. + * + * Drivers which support VHT should not use this API, as it will log an error + * and return a low rate if a VHT rate is selected. + * + * @param ni the ieee80211_node to return the transmit rate for + * @returns the dot11rate / ratecode for legacy/MCS, or the + * lowest available dot11rate if it's VHT (and shouldn't + * have been called.) + */ +uint8_t +ieee80211_node_get_txrate_dot11rate(struct ieee80211_node *ni) +{ + switch (ni->ni_txrate.type) { + case IEEE80211_NODE_TXRATE_LEGACY: + case IEEE80211_NODE_TXRATE_HT: + return (ni->ni_txrate.dot11rate); + break; + case IEEE80211_NODE_TXRATE_VHT: + default: + printf("%s: called for VHT / unknown rate (type %d)!\n", + __func__, ni->ni_txrate.type); + return (12); /* OFDM6 for now */ + } +} + +/** + * @brief return the txrate representing the current transmit rate + * + * This is the API call for drivers and rate control APIs to fetch + * rates. It will populate a struct ieee80211_node_txrate with the + * current rate configuration to use. + * + * @param ni the ieee80211_node to return the transmit rate for + * @param txrate the struct ieee80211_node_txrate to populate + */ +void +ieee80211_node_get_txrate(struct ieee80211_node *ni, + struct ieee80211_node_txrate *txr) +{ + MPASS(ni != NULL); + MPASS(txr != NULL); + + *txr = ni->ni_txrate; +} + +/** + * @brief Set the txrate representing the current transmit rate + * + * This is the API call for drivers and rate control APIs to set + * rates. It will copy a struct ieee80211_node_txrate with the + * current rate configuration to use. + * + * @param ni the ieee80211_node to return the transmit rate for + * @param txrate the struct ieee80211_node_txrate to copy to the node + */ +void +ieee80211_node_set_txrate(struct ieee80211_node *ni, + const struct ieee80211_node_txrate *txr) +{ + MPASS(ni != NULL); + MPASS(txr != NULL); + + ni->ni_txrate = *txr; +} + +/** + * @brief set the dot11rate / ratecode representing the current transmit rate + * + * This is the API call for legacy / 802.11n drivers and rate control APIs + * which expect a dot11rate / ratecode representation for legacy and HT MCS + * rates. + * + * @param ni the ieee80211_node to return the transmit rate for + * @param dot11rate the dot11rate rate code to use + */ +void +ieee80211_node_set_txrate_dot11rate(struct ieee80211_node *ni, + uint8_t dot11Rate) +{ + if (dot11Rate & IEEE80211_RATE_MCS) { + ni->ni_txrate.type = IEEE80211_NODE_TXRATE_HT; + ni->ni_txrate.mcs = dot11Rate & IEEE80211_RATE_VAL; + ni->ni_txrate.nss = 0; + ni->ni_txrate.dot11rate = dot11Rate; + } else { + ni->ni_txrate.type = IEEE80211_NODE_TXRATE_LEGACY; + ni->ni_txrate.mcs = ni->ni_txrate.nss = 0; + ni->ni_txrate.dot11rate = dot11Rate; + } +} + +/** + * @brief set the dot11rate / ratecode representing the current HT transmit rate + * + * This is the API call for 802.11n drivers and rate control APIs + * which expect a dot11rate / ratecode representation for legacy and HT MCS + * rates. It expects an MCS rate code from 0 .. 76. + * + * @param ni the ieee80211_node to return the transmit rate for + * @param mcs the MCS rate to select + */ +void +ieee80211_node_set_txrate_ht_mcsrate(struct ieee80211_node *ni, + uint8_t mcs) +{ + KASSERT(mcs <= 76, ("%s: MCS is not 0..76 (%d)", __func__, mcs)); + if (mcs > 76) { + ic_printf(ni->ni_ic, "%s: invalid MCS (%d)\n", __func__, mcs); + return; + } + + ni->ni_txrate.type = IEEE80211_NODE_TXRATE_HT; + ni->ni_txrate.mcs = mcs; + ni->ni_txrate.nss = 0; + ni->ni_txrate.dot11rate = IEEE80211_RATE_MCS | mcs; +} + +/** + * @brief set the rate to the given VHT transmission rate. + * + * This sets the current transmit rate to the given VHT NSS/MCS. + * + * @param ni the ieee80211_node to set the transmit rate for + * @param nss the number of spatial streams + * @param mcs the MCS rate to select + */ +void +ieee80211_node_set_txrate_vht_rate(struct ieee80211_node *ni, + uint8_t nss, uint8_t mcs) +{ + MPASS(ni != NULL); + + ni->ni_txrate.type = IEEE80211_NODE_TXRATE_VHT; + ni->ni_txrate.mcs = mcs; + ni->ni_txrate.nss = nss; + ni->ni_txrate.dot11rate = 0; +} + +/* + * @brief Fetch the transmit rate for the given node in kbit/s. + * + * This currently only works for CCK, OFDM and HT rates. + * + * @param ni struct ieee80211_node * to lookup + * @returns current transmit rate in kbit/s + */ +uint32_t +ieee80211_node_get_txrate_kbit(struct ieee80211_node *ni) +{ + uint32_t kbps; + + switch (ni->ni_txrate.type) { + case IEEE80211_NODE_TXRATE_LEGACY: + kbps = ni->ni_txrate.dot11rate * 500; + break; + case IEEE80211_NODE_TXRATE_HT: + /* Note: Valid for MCS 0..76 */ + { + const struct ieee80211_mcs_rates *mcs = + &ieee80211_htrates[ni->ni_txrate.dot11rate & + ~IEEE80211_RATE_MCS]; + + if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) { + if (ni->ni_flags & IEEE80211_NODE_SGI40) + kbps = mcs->ht40_rate_800ns * 500; + else + kbps = mcs->ht40_rate_400ns * 500; + } else { + if (ni->ni_flags & IEEE80211_NODE_SGI20) + kbps = mcs->ht20_rate_800ns * 500; + else + kbps = mcs->ht20_rate_400ns * 500; + } + } + break; + case IEEE80211_NODE_TXRATE_VHT: + /* Note: valid for VHT rates, assumes long-GI for now */ + kbps = ieee80211_phy_vht_get_mcs_kbit(ni->ni_chw, + ni->ni_txrate.nss, ni->ni_txrate.mcs, false); + break; + default: + printf("%s: called for unknown rate (type %d)!\n", + __func__, ni->ni_txrate.type); + return (0); + } + + return (kbps); +} |