/*
* Send a probe response frame.
* NB: for probe response, the node may not represent the peer STA.
* We could use BSS node to reduce the memory usage from temporary node.
*/
int
ieee80211_send_proberesp(struct ieee80211_node *ni, u_int8_t *macaddr,
const void *optie, const size_t optielen)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211_rsnparms *rsn = &vap->iv_rsn;
wbuf_t wbuf;
struct ieee80211_frame *wh;
u_int8_t *frm;
u_int16_t capinfo;
int enable_htrates;
bool add_wpa_ie = true;
ASSERT(vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_IBSS ||
vap->iv_opmode == IEEE80211_M_BTAMP);
wbuf = wbuf_alloc(ic->ic_osdev, WBUF_TX_MGMT, MAX_TX_RX_PACKET_SIZE);
if (wbuf == NULL)
return -ENOMEM;
#ifdef IEEE80211_DEBUG_REFCNT
printk("%s ,line %u: increase node %p <%s> refcnt to %d\n",
__func__, __LINE__, ni, ether_sprintf(ni->ni_macaddr),
ieee80211_node_refcnt(ni));
#endif
/* setup the wireless header */
wh = (struct ieee80211_frame *)wbuf_header(wbuf);
ieee80211_send_setup(vap, ni, wh,
IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP,
vap->iv_myaddr, macaddr,
ieee80211_node_get_bssid(ni));
frm = (u_int8_t *)&wh[1];
/*
* probe response frame format
* [8] time stamp
* [2] beacon interval
* [2] cabability information
* [tlv] ssid
* [tlv] supported rates
* [tlv] parameter set (FH/DS)
* [tlv] parameter set (IBSS)
* [tlv] extended rate phy (ERP)
* [tlv] extended supported rates
* [tlv] country (if present)
* [3] power constraint
* [tlv] WPA
* [tlv] WME
* [tlv] HT Capabilities
* [tlv] HT Information
* [tlv] Atheros Advanced Capabilities
*/
OS_MEMZERO(frm, 8); /* timestamp should be filled later */
frm += 8;
*(u_int16_t *)frm = htole16(vap->iv_bss->ni_intval);
frm += 2;
if (vap->iv_opmode == IEEE80211_M_IBSS)
capinfo = IEEE80211_CAPINFO_IBSS;
else
capinfo = IEEE80211_CAPINFO_ESS;
if (IEEE80211_VAP_IS_PRIVACY_ENABLED(vap))
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
if (ic->ic_flags & IEEE80211_F_SHSLOT)
capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
if (ieee80211_ic_doth_is_set(ic) && ieee80211_vap_doth_is_set(vap))
capinfo |= IEEE80211_CAPINFO_SPECTRUM_MGMT;
*(u_int16_t *)frm = htole16(capinfo);
frm += 2;
frm = ieee80211_add_ssid(frm, vap->iv_bss->ni_essid,
vap->iv_bss->ni_esslen);
frm = ieee80211_add_rates(frm, &vap->iv_bss->ni_rates, ic);
if (!IEEE80211_IS_CHAN_FHSS(vap->iv_bsschan)) {
*frm++ = IEEE80211_ELEMID_DSPARMS;
*frm++ = 1;
*frm++ = ieee80211_chan2ieee(ic, ic->ic_curchan);
}
if (vap->iv_opmode == IEEE80211_M_IBSS) {
*frm++ = IEEE80211_ELEMID_IBSSPARMS;
*frm++ = 2;
*frm++ = 0; *frm++ = 0; /* TODO: ATIM window */
}
if (IEEE80211_IS_COUNTRYIE_ENABLED(ic)) {
frm = ieee80211_add_country(frm, vap);
}
if (ieee80211_ic_doth_is_set(ic) && ieee80211_vap_doth_is_set(vap)) {
*frm++ = IEEE80211_ELEMID_PWRCNSTR;
*frm++ = 1;
*frm++ = IEEE80211_PWRCONSTRAINT_VAL(vap);
}
#if ATH_SUPPORT_IBSS_DFS
if (vap->iv_opmode == IEEE80211_M_IBSS) {
frm = ieee80211_add_ibss_dfs(frm,vap);
}
#endif
if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) ||
IEEE80211_IS_CHAN_11NG(ic->ic_curchan)) {
frm = ieee80211_add_erp(frm, ic);
}
/*
* check if os shim has setup RSN IE it self.
*/
IEEE80211_VAP_LOCK(vap);
if (vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].length) {
add_wpa_ie = ieee80211_check_wpaie(vap, vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].ie,
vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].length);
}
if (vap->iv_opt_ie.length) {
add_wpa_ie = ieee80211_check_wpaie(vap, vap->iv_opt_ie.ie,
vap->iv_opt_ie.length);
}
IEEE80211_VAP_UNLOCK(vap);
if (add_wpa_ie) {
if (RSN_AUTH_IS_RSNA(rsn))
frm = ieee80211_setup_rsn_ie(vap, frm);
}
#if ATH_SUPPORT_WAPI
if (RSN_AUTH_IS_WAI(rsn))
frm = ieee80211_setup_wapi_ie(vap, frm);
#endif
frm = ieee80211_add_xrates(frm, &vap->iv_bss->ni_rates, ic);
enable_htrates = ieee80211vap_htallowed(vap);
if (IEEE80211_IS_CHAN_11N(ic->ic_curchan) && enable_htrates) {
frm = ieee80211_add_htcap(frm, ni, IEEE80211_FC0_SUBTYPE_PROBE_RESP);
if (!IEEE80211_IS_HTVIE_ENABLED(ic))
frm = ieee80211_add_htcap_pre_ana(frm, ni, IEEE80211_FC0_SUBTYPE_PROBE_RESP);
frm = ieee80211_add_htinfo(frm, ni);
if (!IEEE80211_IS_HTVIE_ENABLED(ic))
frm = ieee80211_add_htinfo_pre_ana(frm, ni);
if (!(ic->ic_flags & IEEE80211_F_COEXT_DISABLE)) {
frm = ieee80211_add_obss_scan(frm, ni);
frm = ieee80211_add_extcap(frm, ni);
}
}
if (add_wpa_ie) {
if (RSN_AUTH_IS_WPA(rsn))
frm = ieee80211_setup_wpa_ie(vap, frm);
}
if (ieee80211_vap_wme_is_set(vap) &&
(vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_BTAMP)) /* don't support WMM in ad-hoc for now */
frm = ieee80211_add_wme_param(frm, &ic->ic_wme, IEEE80211_VAP_IS_UAPSD_ENABLED(vap));
if ((IEEE80211_IS_CHAN_11N(ic->ic_curchan)) && (IEEE80211_IS_HTVIE_ENABLED(ic)) && enable_htrates) {
frm = ieee80211_add_htcap_vendor_specific(frm, ni, IEEE80211_FC0_SUBTYPE_PROBE_RESP);
frm = ieee80211_add_htinfo_vendor_specific(frm, ni);
}
if (vap->iv_bss->ni_ath_flags) {
frm = ieee80211_add_athAdvCap(frm, vap->iv_bss->ni_ath_flags,
vap->iv_bss->ni_ath_defkeyindex);
} else {
frm = ieee80211_add_athAdvCap(frm, 0, IEEE80211_INVAL_DEFKEY);
}
/* Insert ieee80211_ie_ath_extcap IE to beacon */
if (ic->ic_ath_extcap)
frm = ieee80211_add_athextcap(frm, ic->ic_ath_extcap, ic->ic_weptkipaggr_rxdelim);
#ifdef notyet
if (ni->ni_ath_ie != NULL) /* XXX */
frm = ieee80211_add_ath(frm, ni);
#endif
IEEE80211_VAP_LOCK(vap);
if (vap->iv_opt_ie.length) {
OS_MEMCPY(frm, vap->iv_opt_ie.ie,
vap->iv_opt_ie.length);
frm += vap->iv_opt_ie.length;
}
if (vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].length) {
OS_MEMCPY(frm, vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].ie,
vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].length);
frm += vap->iv_app_ie[IEEE80211_FRAME_TYPE_PROBERESP].length;
}
/* Add the Application IE's */
frm = ieee80211_mlme_app_ie_append(vap, IEEE80211_FRAME_TYPE_PROBERESP, frm);
IEEE80211_VAP_UNLOCK(vap);
if (optie != NULL && optielen != 0) {
OS_MEMCPY(frm, optie, optielen);
frm += optielen;
}
wbuf_set_pktlen(wbuf, (frm - (u_int8_t *)wbuf_header(wbuf)));
return ieee80211_send_mgmt(vap,ni, wbuf,true);
}
/*
* Update the dynamic parts of a beacon frame based on the current state.
*/
int
ieee80211_beacon_update(struct ieee80211_node *ni,
struct ieee80211_beacon_offsets *bo, struct sk_buff *skb, int mcast)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
int len_changed = 0;
u_int16_t capinfo;
IEEE80211_LOCK(ic);
if ((ic->ic_flags & IEEE80211_F_DOTH) &&
(vap->iv_flags & IEEE80211_F_CHANSWITCH) &&
(vap->iv_chanchange_count == ic->ic_chanchange_tbtt)) {
u_int8_t *frm;
struct ieee80211_channel *c;
vap->iv_chanchange_count = 0;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
"%s: reinit beacon\n", __func__);
/*
* NB: ic_bsschan is in the DSPARMS beacon IE, so must set this
* prior to the beacon re-init, below.
*/
c = ieee80211_doth_findchan(vap, ic->ic_chanchange_chan);
if (c == NULL) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
"%s: find channel failure\n", __func__);
IEEE80211_UNLOCK(ic);
return 0;
}
ic->ic_bsschan = c;
skb_pull(skb, sizeof(struct ieee80211_frame));
skb_trim(skb, 0);
frm = skb->data;
skb_put(skb, ieee80211_beacon_init(ni, bo, frm) - frm);
skb_push(skb, sizeof(struct ieee80211_frame));
vap->iv_flags &= ~IEEE80211_F_CHANSWITCH;
ic->ic_flags &= ~IEEE80211_F_CHANSWITCH;
/* NB: only for the first VAP to get here */
if (ic->ic_curchan != c) {
ic->ic_curchan = c;
ic->ic_set_channel(ic);
}
len_changed = 1;
}
/* XXX faster to recalculate entirely or just changes? */
if (vap->iv_opmode == IEEE80211_M_IBSS)
capinfo = IEEE80211_CAPINFO_IBSS;
else
capinfo = IEEE80211_CAPINFO_ESS;
if (vap->iv_flags & IEEE80211_F_PRIVACY)
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(ic->ic_bsschan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
if (ic->ic_flags & IEEE80211_F_SHSLOT)
capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
if (ic->ic_flags & IEEE80211_F_DOTH)
capinfo |= IEEE80211_CAPINFO_SPECTRUM_MGMT;
*bo->bo_caps = htole16(capinfo);
if (vap->iv_flags & IEEE80211_F_WME) {
struct ieee80211_wme_state *wme = &ic->ic_wme;
/*
* Check for aggressive mode change. When there is
* significant high priority traffic in the BSS
* throttle back BE traffic by using conservative
* parameters. Otherwise BE uses aggressive params
* to optimize performance of legacy/non-QoS traffic.
*/
if (wme->wme_flags & WME_F_AGGRMODE) {
if (wme->wme_hipri_traffic >
wme->wme_hipri_switch_thresh) {
IEEE80211_NOTE(vap, IEEE80211_MSG_WME, ni,
"%s: traffic %u, disable aggressive mode",
__func__, wme->wme_hipri_traffic);
wme->wme_flags &= ~WME_F_AGGRMODE;
ieee80211_wme_updateparams_locked(vap);
wme->wme_hipri_traffic =
wme->wme_hipri_switch_hysteresis;
} else
wme->wme_hipri_traffic = 0;
} else {
if (wme->wme_hipri_traffic <=
wme->wme_hipri_switch_thresh) {
IEEE80211_NOTE(vap, IEEE80211_MSG_WME, ni,
"%s: traffic %u, enable aggressive mode",
__func__, wme->wme_hipri_traffic);
wme->wme_flags |= WME_F_AGGRMODE;
ieee80211_wme_updateparams_locked(vap);
wme->wme_hipri_traffic = 0;
} else
wme->wme_hipri_traffic =
wme->wme_hipri_switch_hysteresis;
}
/* XXX multi-bss */
if (vap->iv_flags & IEEE80211_F_WMEUPDATE) {
(void) ieee80211_add_wme_param(bo->bo_wme, wme, IEEE80211_VAP_UAPSD_ENABLED(vap));
vap->iv_flags &= ~IEEE80211_F_WMEUPDATE;
}
}
if (vap->iv_opmode == IEEE80211_M_HOSTAP) { /* NB: no IBSS support*/
struct ieee80211_tim_ie *tie =
(struct ieee80211_tim_ie *) bo->bo_tim;
if (vap->iv_flags & IEEE80211_F_TIMUPDATE) {
u_int timlen, timoff, i;
/*
* ATIM/DTIM needs updating. If it fits in the
* current space allocated then just copy in the
* new bits. Otherwise we need to move any trailing
* data to make room. Note that we know there is
* contiguous space because ieee80211_beacon_allocate
* ensures there is space in the mbuf to write a
* maximal-size virtual bitmap (based on ic_max_aid).
*/
/*
* Calculate the bitmap size and offset, copy any
* trailer out of the way, and then copy in the
* new bitmap and update the information element.
* Note that the tim bitmap must contain at least
* one byte and any offset must be even.
*/
if (vap->iv_ps_pending != 0) {
timoff = 128; /* impossibly large */
for (i = 0; i < vap->iv_tim_len; i++)
if (vap->iv_tim_bitmap[i]) {
timoff = i &~ 1;
break;
}
KASSERT(timoff != 128, ("tim bitmap empty!"));
for (i = vap->iv_tim_len-1; i >= timoff; i--)
if (vap->iv_tim_bitmap[i])
break;
timlen = 1 + (i - timoff);
} else {
timoff = 0;
timlen = 1;
}
if (timlen != bo->bo_tim_len) {
/* copy up/down trailer */
int trailer_adjust =
(tie->tim_bitmap+timlen) - (bo->bo_tim_trailer);
memmove(tie->tim_bitmap+timlen, bo->bo_tim_trailer,
bo->bo_tim_trailerlen);
bo->bo_tim_trailer = tie->tim_bitmap+timlen;
bo->bo_chanswitch += trailer_adjust;
bo->bo_wme += trailer_adjust;
bo->bo_erp += trailer_adjust;
bo->bo_ath_caps += trailer_adjust;
bo->bo_xr += trailer_adjust;
if (timlen > bo->bo_tim_len)
skb_put(skb, timlen - bo->bo_tim_len);
else
skb_trim(skb, skb->len - (bo->bo_tim_len - timlen));
bo->bo_tim_len = timlen;
/* update information element */
tie->tim_len = 3 + timlen;
tie->tim_bitctl = timoff;
len_changed = 1;
}
memcpy(tie->tim_bitmap, vap->iv_tim_bitmap + timoff,
bo->bo_tim_len);
vap->iv_flags &= ~IEEE80211_F_TIMUPDATE;
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"%s: TIM updated, pending %u, off %u, len %u",
__func__, vap->iv_ps_pending, timoff, timlen);
}
/* count down DTIM period */
if (tie->tim_count == 0)
tie->tim_count = tie->tim_period - 1;
else
tie->tim_count--;
/* update state for buffered multicast frames on DTIM */
if (mcast && (tie->tim_count == 0))
tie->tim_bitctl |= 1;
else
tie->tim_bitctl &= ~1;
if ((ic->ic_flags & IEEE80211_F_DOTH) &&
(ic->ic_flags & IEEE80211_F_CHANSWITCH)) {
if (!vap->iv_chanchange_count) {
vap->iv_flags |= IEEE80211_F_CHANSWITCH;
/* copy out trailer to open up a slot */
memmove(bo->bo_chanswitch + IEEE80211_CHANSWITCHANN_BYTES,
bo->bo_chanswitch, bo->bo_chanswitch_trailerlen);
/* add ie in opened slot */
bo->bo_chanswitch[0] = IEEE80211_ELEMID_CHANSWITCHANN;
bo->bo_chanswitch[1] = 3; /* fixed length */
bo->bo_chanswitch[2] = 1; /* stas get off for now */
bo->bo_chanswitch[3] = ic->ic_chanchange_chan;
bo->bo_chanswitch[4] = ic->ic_chanchange_tbtt;
/* update the trailer lens */
bo->bo_chanswitch_trailerlen += IEEE80211_CHANSWITCHANN_BYTES;
bo->bo_tim_trailerlen += IEEE80211_CHANSWITCHANN_BYTES;
bo->bo_wme += IEEE80211_CHANSWITCHANN_BYTES;
bo->bo_erp += IEEE80211_CHANSWITCHANN_BYTES;
bo->bo_ath_caps += IEEE80211_CHANSWITCHANN_BYTES;
bo->bo_xr += IEEE80211_CHANSWITCHANN_BYTES;
/* indicate new beacon length so other layers may manage memory */
skb_put(skb, IEEE80211_CHANSWITCHANN_BYTES);
len_changed = 1;
}
else
bo->bo_chanswitch[4]--;
vap->iv_chanchange_count++;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
"%s: CHANSWITCH IE, change in %d\n",
__func__, bo->bo_chanswitch[4]);
}
#ifdef ATH_SUPERG_XR
if (vap->iv_flags & IEEE80211_F_XRUPDATE) {
if (vap->iv_xrvap)
(void) ieee80211_add_xr_param(bo->bo_xr, vap);
vap->iv_flags &= ~IEEE80211_F_XRUPDATE;
}
#endif
if (ic->ic_flags_ext & IEEE80211_FEXT_ERPUPDATE) {
(void) ieee80211_add_erp(bo->bo_erp, ic);
ic->ic_flags_ext &= ~IEEE80211_FEXT_ERPUPDATE;
}
}
/* if it is a mode change beacon for dynamic turbo case */
if (((ic->ic_ath_cap & IEEE80211_ATHC_BOOST) != 0) ^
IEEE80211_IS_CHAN_TURBO(ic->ic_curchan))
ieee80211_add_athAdvCap(bo->bo_ath_caps, vap->iv_bss->ni_ath_flags,
vap->iv_bss->ni_ath_defkeyindex);
/* add APP_IE buffer if app updated it */
if (vap->iv_flags_ext & IEEE80211_FEXT_APPIE_UPDATE) {
/* adjust the buffer size if the size is changed */
if (vap->app_ie[IEEE80211_APPIE_FRAME_BEACON].length != bo->bo_appie_buf_len) {
int diff_len;
diff_len = vap->app_ie[IEEE80211_APPIE_FRAME_BEACON].length - bo->bo_appie_buf_len;
if (diff_len > 0)
skb_put(skb, diff_len);
else
skb_trim(skb, skb->len + diff_len);
bo->bo_appie_buf_len = vap->app_ie[IEEE80211_APPIE_FRAME_BEACON].length;
/* update the trailer lens */
bo->bo_chanswitch_trailerlen += diff_len;
bo->bo_tim_trailerlen += diff_len;
len_changed = 1;
}
memcpy(bo->bo_appie_buf,vap->app_ie[IEEE80211_APPIE_FRAME_BEACON].ie,
vap->app_ie[IEEE80211_APPIE_FRAME_BEACON].length);
vap->iv_flags_ext &= ~IEEE80211_FEXT_APPIE_UPDATE;
}
IEEE80211_UNLOCK(ic);
return len_changed;
}
static u_int8_t *
ieee80211_beacon_init(struct ieee80211_node *ni, struct ieee80211_beacon_offsets *bo,
u_int8_t *frm)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
u_int16_t capinfo;
struct ieee80211_rateset *rs = &ni->ni_rates;
KASSERT(ic->ic_bsschan != IEEE80211_CHAN_ANYC, ("no bss chan"));
/* XXX timestamp is set by hardware/driver */
memset(frm, 0, 8);
frm += 8;
/* beacon interval */
*(__le16 *)frm = htole16(ni->ni_intval);
frm += 2;
/* capability information */
if (vap->iv_opmode == IEEE80211_M_IBSS)
capinfo = IEEE80211_CAPINFO_IBSS;
else
capinfo = IEEE80211_CAPINFO_ESS;
if (vap->iv_flags & IEEE80211_F_PRIVACY)
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(ic->ic_bsschan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
if (ic->ic_flags & IEEE80211_F_SHSLOT)
capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
if (ic->ic_flags & IEEE80211_F_DOTH)
capinfo |= IEEE80211_CAPINFO_SPECTRUM_MGMT;
bo->bo_caps = (__le16 *)frm;
*(__le16 *)frm = htole16(capinfo);
frm += 2;
/* ssid */
*frm++ = IEEE80211_ELEMID_SSID;
if ((vap->iv_flags & IEEE80211_F_HIDESSID) == 0) {
*frm++ = ni->ni_esslen;
memcpy(frm, ni->ni_essid, ni->ni_esslen);
frm += ni->ni_esslen;
} else
*frm++ = 0;
/* supported rates */
frm = ieee80211_add_rates(frm, rs);
/* XXX: better way to check this? */
/* XXX: how about DS ? */
if (!IEEE80211_IS_CHAN_FHSS(ic->ic_bsschan)) {
*frm++ = IEEE80211_ELEMID_DSPARMS;
*frm++ = 1;
*frm++ = ieee80211_chan2ieee(ic, ic->ic_bsschan);
}
bo->bo_tim = frm;
/* IBSS/TIM */
if (vap->iv_opmode == IEEE80211_M_IBSS) {
*frm++ = IEEE80211_ELEMID_IBSSPARMS;
*frm++ = 2;
*frm++ = 0; *frm++ = 0; /* TODO: ATIM window */
bo->bo_tim_len = 0;
} else {
struct ieee80211_tim_ie *tie = (struct ieee80211_tim_ie *) frm;
tie->tim_ie = IEEE80211_ELEMID_TIM;
tie->tim_len = 4; /* length */
tie->tim_count = 0; /* DTIM count */
tie->tim_period = vap->iv_dtim_period; /* DTIM period */
tie->tim_bitctl = 0; /* bitmap control */
tie->tim_bitmap[0] = 0; /* Partial Virtual Bitmap */
frm += sizeof(struct ieee80211_tim_ie);
bo->bo_tim_len = 1;
}
bo->bo_tim_trailer = frm;
/* country */
if ((ic->ic_flags & IEEE80211_F_DOTH) ||
(ic->ic_flags_ext & IEEE80211_FEXT_COUNTRYIE)) {
frm = ieee80211_add_country(frm, ic);
}
/* power constraint */
if (ic->ic_flags & IEEE80211_F_DOTH) {
*frm++ = IEEE80211_ELEMID_PWRCNSTR;
*frm++ = 1;
*frm++ = IEEE80211_PWRCONSTRAINT_VAL(ic);
}
/* XXX: channel switch announcement ? */
bo->bo_chanswitch = frm;
/* ERP */
if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan)) {
bo->bo_erp = frm;
frm = ieee80211_add_erp(frm, ic);
}
/* Ext. Supp. Rates */
frm = ieee80211_add_xrates(frm, rs);
/* WME */
if (vap->iv_flags & IEEE80211_F_WME) {
bo->bo_wme = frm;
frm = ieee80211_add_wme_param(frm, &ic->ic_wme, IEEE80211_VAP_UAPSD_ENABLED(vap));
vap->iv_flags &= ~IEEE80211_F_WMEUPDATE;
}
/* WPA 1+2 */
if (vap->iv_flags & IEEE80211_F_WPA)
frm = ieee80211_add_wpa(frm, vap);
/* athAdvCaps */
bo->bo_ath_caps = frm;
if (vap->iv_bss && vap->iv_bss->ni_ath_flags)
frm = ieee80211_add_athAdvCap(frm, vap->iv_bss->ni_ath_flags,
vap->iv_bss->ni_ath_defkeyindex);
/* XR */
bo->bo_xr = frm;
#ifdef ATH_SUPERG_XR
if (vap->iv_xrvap && vap->iv_ath_cap & IEEE80211_ATHC_XR) /* XR */
frm = ieee80211_add_xr_param(frm, vap);
#endif
bo->bo_appie_buf = frm;
bo->bo_appie_buf_len = 0;
bo->bo_tim_trailerlen = frm - bo->bo_tim_trailer;
bo->bo_chanswitch_trailerlen = frm - bo->bo_chanswitch;
return frm;
}
static u_int8_t *
ieee80211_beacon_init(struct ieee80211_node *ni, struct ieee80211_beacon_offsets *bo,
u_int8_t *frm)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
u_int16_t capinfo;
struct ieee80211_rateset *rs = &ni->ni_rates;
struct ieee80211_rsnparms *rsn = &vap->iv_rsn;
int enable_htrates;
bool add_wpa_ie = true;
/*Begin: Added by zhanghu for increasing rate*/
ic->ic_rate_mask_bak = ic->ic_rate_mask;
ic->ic_mcs_mask_bak = ic->ic_mcs_mask;
/*End: Added by zhanghu for increasing rate*/
KASSERT(vap->iv_bsschan != IEEE80211_CHAN_ANYC, ("no bss chan"));
OS_MEMZERO(frm, 8); /* XXX timestamp is set by hardware/driver */
frm += 8;
*(u_int16_t *)frm = htole16(ieee80211_node_get_beacon_interval(ni));
frm += 2;
if (vap->iv_opmode == IEEE80211_M_IBSS)
capinfo = IEEE80211_CAPINFO_IBSS;
else
capinfo = IEEE80211_CAPINFO_ESS;
if (IEEE80211_VAP_IS_PRIVACY_ENABLED(vap))
capinfo |= IEEE80211_CAPINFO_PRIVACY;
if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
IEEE80211_IS_CHAN_2GHZ(vap->iv_bsschan))
capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
if (ic->ic_flags & IEEE80211_F_SHSLOT)
capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
if (ieee80211_ic_doth_is_set(ic) && ieee80211_vap_doth_is_set(vap))
capinfo |= IEEE80211_CAPINFO_SPECTRUM_MGMT;
if (IEEE80211_VAP_IS_PUREB_ENABLED(vap)) {
capinfo &= ~IEEE80211_CAPINFO_SHORT_SLOTTIME;
rs = &ic->ic_sup_rates[IEEE80211_MODE_11B];
} else if (IEEE80211_VAP_IS_PUREG_ENABLED(vap)) {
ieee80211_setpuregbasicrates(rs);
}
bo->bo_caps = (u_int16_t *)frm;
*(u_int16_t *)frm = htole16(capinfo);
frm += 2;
*frm++ = IEEE80211_ELEMID_SSID;
if (IEEE80211_VAP_IS_HIDESSID_ENABLED(vap)) {
*frm++ = 0;
} else {
/* AUTELAN-Added-Begin : &tuqiang for openessid */
#if 0
*frm++ = ni->ni_esslen;
OS_MEMCPY(frm, ni->ni_essid, ni->ni_esslen);
frm += ni->ni_esslen;
#endif
if(!(openessid_param & OPENESSID_ENABLE_MASK)){ /* openessid disable */
*frm++ = ni->ni_esslen;
OS_MEMCPY(frm, ni->ni_essid, ni->ni_esslen);
frm += ni->ni_esslen;
} else { /* openessid enable */
int index;
while(vap->iv_essid_be_cnt < 4)
{
index = vap->iv_essid_index[vap->iv_essid_be_cnt];
vap->iv_essid_be_cnt++;
if(index < 0)
continue;
*frm++ = g_essid_table[index].len;
OS_MEMCPY(frm, g_essid_table[index].essid, g_essid_table[index].len);
frm += g_essid_table[index].len;
break; /* break while */
} /* end while */
if(vap->iv_essid_be_cnt == 4){
vap->iv_essid_be_cnt = 0;
}
}
/* AUTELAN-Added-End : [email protected] */
}
frm = ieee80211_add_rates(frm, rs, ic);
/* XXX better way to check this? */
if (!IEEE80211_IS_CHAN_FHSS(vap->iv_bsschan)) {
*frm++ = IEEE80211_ELEMID_DSPARMS;
*frm++ = 1;
*frm++ = ieee80211_chan2ieee(ic, vap->iv_bsschan);
}
bo->bo_tim = frm;
if (vap->iv_opmode == IEEE80211_M_IBSS) {
*frm++ = IEEE80211_ELEMID_IBSSPARMS;
*frm++ = 2;
*frm++ = 0; *frm++ = 0; /* TODO: ATIM window */
bo->bo_tim_len = 0;
} else {
struct ieee80211_tim_ie *tie = (struct ieee80211_tim_ie *) frm;
tie->tim_ie = IEEE80211_ELEMID_TIM;
tie->tim_len = 4; /* length */
tie->tim_count = 0; /* DTIM count */
tie->tim_period = vap->iv_dtim_period; /* DTIM period */
tie->tim_bitctl = 0; /* bitmap control */
tie->tim_bitmap[0] = 0; /* Partial Virtual Bitmap */
frm += sizeof(struct ieee80211_tim_ie);
bo->bo_tim_len = 1;
}
bo->bo_tim_trailer = frm;
if (IEEE80211_IS_COUNTRYIE_ENABLED(ic)) {
frm = ieee80211_add_country(frm, vap);
}
if (ieee80211_ic_doth_is_set(ic) && ieee80211_vap_doth_is_set(vap)) {
*frm++ = IEEE80211_ELEMID_PWRCNSTR;
*frm++ = 1;
*frm++ = IEEE80211_PWRCONSTRAINT_VAL(vap);
}
bo->bo_chanswitch = frm;
#if ATH_SUPPORT_IBSS_DFS
if (vap->iv_opmode == IEEE80211_M_IBSS) {
if (ieee80211_ibss_dfs_element_enable(vap, ic)) {
ieee80211_build_ibss_dfs_ie(vap);
bo->bo_ibssdfs = frm;
frm = ieee80211_add_ibss_dfs(frm,vap);
} else {
bo->bo_ibssdfs = NULL;
OS_MEMZERO(&vap->iv_ibssdfs_ie_data, sizeof(struct ieee80211_ibssdfs_ie));
}
}
#endif /* ATH_SUPPORT_IBSS_DFS */
enable_htrates = ieee80211vap_htallowed(vap);
if (IEEE80211_IS_CHAN_ANYG(vap->iv_bsschan) ||
IEEE80211_IS_CHAN_11NG(vap->iv_bsschan)) {
bo->bo_erp = frm;
frm = ieee80211_add_erp(frm, ic);
}
/*
* check if os shim has setup RSN IE it self.
*/
IEEE80211_VAP_LOCK(vap);
if (vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].length) {
add_wpa_ie = ieee80211_check_wpaie(vap, vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].ie,
vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].length);
}
if (vap->iv_opt_ie.length) {
add_wpa_ie = ieee80211_check_wpaie(vap, vap->iv_opt_ie.ie,
vap->iv_opt_ie.length);
}
IEEE80211_VAP_UNLOCK(vap);
/* XXX: put IEs in the order of element IDs. */
if (add_wpa_ie) {
if (RSN_AUTH_IS_RSNA(rsn))
frm = ieee80211_setup_rsn_ie(vap, frm);
}
#if ATH_SUPPORT_WAPI
if (RSN_AUTH_IS_WAI(rsn))
frm = ieee80211_setup_wapi_ie(vap, frm);
#endif
frm = ieee80211_add_xrates(frm, rs, ic);
#ifdef E_CSA
bo->bo_extchanswitch = frm;
#endif /* E_CSA */
/*
* HT cap. check for vap is done in ieee80211vap_htallowed.
* TBD: remove iv_bsschan check to support multiple channel operation.
*/
if (IEEE80211_IS_CHAN_11N(vap->iv_bsschan) && enable_htrates) {
bo->bo_htcap = frm;
frm = ieee80211_add_htcap(frm, ni, IEEE80211_FC0_SUBTYPE_BEACON);
bo->bo_htinfo = frm;
frm = ieee80211_add_htinfo(frm, ni);
if (!(ic->ic_flags & IEEE80211_F_COEXT_DISABLE)) {
bo->bo_obss_scan = frm;
frm = ieee80211_add_obss_scan(frm, ni);
bo->bo_extcap = frm;
frm = ieee80211_add_extcap(frm, ni);
}
}
if (add_wpa_ie) {
if (RSN_AUTH_IS_WPA(rsn))
frm = ieee80211_setup_wpa_ie(vap, frm);
}
if (ieee80211_vap_wme_is_set(vap) &&
(vap->iv_opmode == IEEE80211_M_HOSTAP ||
#if ATH_SUPPORT_IBSS_WMM
vap->iv_opmode == IEEE80211_M_IBSS ||
#endif
vap->iv_opmode == IEEE80211_M_BTAMP)) {
bo->bo_wme = frm;
frm = ieee80211_add_wme_param(frm, &ic->ic_wme, IEEE80211_VAP_IS_UAPSD_ENABLED(vap));
vap->iv_flags &= ~IEEE80211_F_WMEUPDATE;
}
if ((IEEE80211_IS_CHAN_11N(vap->iv_bsschan)) && IEEE80211_IS_HTVIE_ENABLED(ic) && enable_htrates) {
frm = ieee80211_add_htcap_vendor_specific(frm, ni,IEEE80211_FC0_SUBTYPE_BEACON);
bo->bo_htinfo_vendor_specific = frm;
frm = ieee80211_add_htinfo_vendor_specific(frm, ni);
}
bo->bo_ath_caps = frm;
if (vap->iv_bss && vap->iv_bss->ni_ath_flags) {
frm = ieee80211_add_athAdvCap(frm, vap->iv_bss->ni_ath_flags,
vap->iv_bss->ni_ath_defkeyindex);
} else {
frm = ieee80211_add_athAdvCap(frm, 0, IEEE80211_INVAL_DEFKEY);
}
/* Insert ieee80211_ie_ath_extcap IE to beacon */
if (ic->ic_ath_extcap)
frm = ieee80211_add_athextcap(frm, ic->ic_ath_extcap, ic->ic_weptkipaggr_rxdelim);
bo->bo_xr = frm;
bo->bo_appie_buf = frm;
bo->bo_appie_buf_len = 0;
IEEE80211_VAP_LOCK(vap);
if (vap->iv_opt_ie.length) {
OS_MEMCPY(frm, vap->iv_opt_ie.ie,
vap->iv_opt_ie.length);
frm += vap->iv_opt_ie.length;
}
if (vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].length > 0) {
OS_MEMCPY(frm,vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].ie,
vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].length);
frm += vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].length;
bo->bo_appie_buf_len = vap->iv_app_ie[IEEE80211_FRAME_TYPE_BEACON].length;
}
/* Add the Application IE's */
frm = ieee80211_mlme_app_ie_append(vap, IEEE80211_FRAME_TYPE_BEACON, frm);
bo->bo_appie_buf_len += vap->iv_app_ie_list[IEEE80211_FRAME_TYPE_BEACON].total_ie_len;
IEEE80211_VAP_UNLOCK(vap);
bo->bo_tim_trailerlen = frm - bo->bo_tim_trailer;
bo->bo_chanswitch_trailerlen = frm - bo->bo_chanswitch;
#ifdef E_CSA
bo->bo_extchanswitch_trailerlen = frm - bo->bo_extchanswitch;
#endif /* E_CSA */
#if ATH_SUPPORT_IBSS_DFS
if (vap->iv_opmode == IEEE80211_M_IBSS &&
(bo->bo_ibssdfs != NULL)) {
struct ieee80211_ibssdfs_ie * ibss_dfs_ie = (struct ieee80211_ibssdfs_ie *)bo->bo_ibssdfs;
bo->bo_ibssdfs_trailerlen = frm - (bo->bo_ibssdfs + 2 + ibss_dfs_ie->len);
}
#endif /* ATH_SUPPORT_IBSS_DFS */
return frm;
}
