/*
* Create a HOSTAP node on current channel based on ssid.
*/
int
ieee80211_create_infra_bss(struct ieee80211vap *vap,
const u_int8_t *essid,
const u_int16_t esslen)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr);
if (ni == NULL)
return -ENOMEM;
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
ni->ni_esslen = esslen;
OS_MEMCPY(ni->ni_essid, essid, ni->ni_esslen);
ni->ni_intval = ic->ic_intval;
if (IEEE80211_VAP_IS_PRIVACY_ENABLED(vap)) {
ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
ni->ni_rsn = vap->iv_rsn; /* use local RSN settings as the BSS setting */
}
/* Set the node htcap to be same as ic htcap */
ni->ni_htcap = ic->ic_htcap;
IEEE80211_ADD_NODE_TARGET(ni, ni->ni_vap, 1);
/* copy the original bssinfo into the new ni BugID: Ev# 73905 */
ieee80211_copy_bss(ni, vap->iv_bss);
return ieee80211_sta_join_bss(ni);
}
/*
* function to handle station joining infrastructure network.
* used for AP mode vap only.
*/
int ieee80211_node_join(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
IEEE80211_NODE_STATE_LOCK(ni);
if (ni->ni_associd == 0) {
u_int16_t aid;
if (vap->iv_aid_bitmap == NULL || IEEE80211_IS_TDLS_NODE(ni)) {
IEEE80211_NODE_STATE_UNLOCK(ni);
return -1; /* vap is being deleted */
}
/*
* It would be good to search the bitmap
* more efficiently, but this will do for now.
*/
if (!IEEE80211_IS_TDLS_NODE(ni)) {
for (aid = 1; aid < vap->iv_max_aid; aid++) {
if (!IEEE80211_AID_ISSET(vap, aid))
break;
}
if (aid >= vap->iv_max_aid) {
/*
* Keep stats on this situation.
*/
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, "aid (%d)"
" greater than max aid (%d)\n", aid,
vap->iv_max_aid);
IEEE80211_NODE_STATE_UNLOCK(ni);
IEEE80211_NODE_LEAVE(ni);
return -1;
}
ni->ni_associd = aid | 0xc000;
IEEE80211_AID_SET(vap, ni->ni_associd);
} else {
/* To keep the other parts of code happy. Otherwise the code assumes
* node disconnected and tries to delete it.There are no associd for
* TDLS nodes.
*/
ni->ni_associd = vap->iv_bss->ni_associd;
}
vap->iv_sta_assoc++;
ic->ic_sta_assoc++;
/* Update bss load element in beacon */
ieee80211_vap_bssload_update_set(vap);
if ((ni->ni_flags & IEEE80211_NODE_HT) &&
(ni->ni_flags & IEEE80211_NODE_40_INTOLERANT)) {
ieee80211_change_cw(ic);
}
if (IEEE80211_IS_AMPDU_ENABLED(ic)) {
ieee80211node_clear_flag(ni, IEEE80211_NODE_NOAMPDU);
}
else {
ieee80211node_set_flag(ni, IEEE80211_NODE_NOAMPDU);
}
if (IEEE80211_NODE_USEAMPDU(ni)) {
ic->ic_ht_sta_assoc++;
if (ni->ni_htcap & IEEE80211_HTCAP_C_GREENFIELD)
ic->ic_ht_gf_sta_assoc++;
}
if (ni->ni_chwidth == IEEE80211_CWM_WIDTH40)
ic->ic_ht40_sta_assoc++;
if ((IEEE80211_IS_CHAN_ANYG(vap->iv_bsschan) ||
IEEE80211_IS_CHAN_11NG(vap->iv_bsschan)) && !IEEE80211_IS_TDLS_NODE(ni))
ieee80211_node_join_11g(ni);
}
#if ATH_SUPPORT_WIFIPOS
// Time stamp to send in status response
ni->last_rx_desc_tsf = ic->ic_get_TSF32(ic);
#endif
ni->ni_inact_reload = ni->ni_vap->iv_inact_auth;
ni->ni_inact = ni->ni_inact_reload;
/* Multicast enhancement: If the entry with the node's address exists in
* the snoop table, it should be removed.
*/
if (vap->iv_ique_ops.me_clean) {
vap->iv_ique_ops.me_clean(ni);
}
/*
* HBR / headline block removal: add the node entity to the table
* for HBR purpose
*/
if (vap->iv_ique_ops.hbr_nodejoin) {
vap->iv_ique_ops.hbr_nodejoin(vap, ni);
}
IEEE80211_NODE_STATE_UNLOCK(ni);
IEEE80211_ADD_NODE_TARGET(ni, ni->ni_vap, 0);
return 0;
}
/*
* Join an infrastructure network
*/
int
ieee80211_sta_join(struct ieee80211vap *vap, ieee80211_scan_entry_t scan_entry)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211_node *ni = NULL;
const u_int8_t *macaddr = ieee80211_scan_entry_macaddr(scan_entry);
int error = 0;
ASSERT(vap->iv_opmode == IEEE80211_M_STA);
ni = ieee80211_find_node(nt, macaddr);
if (ni) {
/*
* reusing old node has a potential for several bugs . The old node may have some state info from previous association.
* get rid of the old bss node and create a new bss node.
*/
ieee80211_sta_leave(ni);
ieee80211_free_node(ni);
}
/*
* Create a BSS node.
*/
ni = ieee80211_alloc_node(nt, vap, macaddr);
if (ni == NULL)
return -ENOMEM;
/* set the maximum number frmaes to be queued when the vap is in fake sleep */
ieee80211_node_saveq_set_param(ni,IEEE80211_NODE_SAVEQ_DATA_Q_LEN,IEE80211_STA_MAX_NODE_SAVEQ_LEN);
/* To become a bss node, a node need an extra reference count, which alloc node already gives */
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_note(ni->ni_vap,"%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 bss node for association */
error = ieee80211_setup_node(ni, scan_entry);
if (error != 0) {
ieee80211_free_node(ni);
return error;
}
/* copy the beacon timestamp */
OS_MEMCPY(ni->ni_tstamp.data,
ieee80211_scan_entry_tsf(scan_entry),
sizeof(ni->ni_tstamp));
/*
* Join the BSS represented by this new node.
* This function will free up the old BSS node
* and use this one as the new BSS node.
*/
ieee80211_sta_join_bss(ni);
IEEE80211_ADD_NODE_TARGET(ni, ni->ni_vap, 0);
/* Save our home channel */
vap->iv_bsschan = ni->ni_chan;
vap->iv_cur_mode = ieee80211_chan2mode(ni->ni_chan);
/* Update the DotH falg */
ieee80211_update_spectrumrequirement(vap);
/*
* The OS will control our security keys.
* If clear, keys will be cleared.
* If static WEP, keys will be plumbed before JoinInfra.
* If WPA/WPA2, ciphers will be setup, but no keys will be plumbed until
* after they are negotiated.
* XXX We should ASSERT that all of the foregoing is true.
*/
return 0;
}
