diff options
Diffstat (limited to 'net/mac80211/mlme.c')
| -rw-r--r-- | net/mac80211/mlme.c | 1885 |
1 files changed, 651 insertions, 1234 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 2b890af01ba4..841b8450b3de 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1,6 +1,6 @@ /* * BSS client mode implementation - * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> + * Copyright 2003-2008, Jouni Malinen <j@w1.fi> * Copyright 2004, Instant802 Networks, Inc. * Copyright 2005, Devicescape Software, Inc. * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> @@ -15,11 +15,8 @@ #include <linux/if_ether.h> #include <linux/skbuff.h> #include <linux/if_arp.h> -#include <linux/wireless.h> -#include <linux/random.h> #include <linux/etherdevice.h> #include <linux/rtnetlink.h> -#include <net/iw_handler.h> #include <net/mac80211.h> #include <asm/unaligned.h> @@ -35,15 +32,6 @@ #define IEEE80211_MONITORING_INTERVAL (2 * HZ) #define IEEE80211_PROBE_INTERVAL (60 * HZ) #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) -#define IEEE80211_SCAN_INTERVAL (2 * HZ) -#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) -#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) - -#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) -#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) - -#define IEEE80211_IBSS_MAX_STA_ENTRIES 128 - /* utils */ static int ecw2cw(int ecw) @@ -55,10 +43,10 @@ static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) { u8 *end, *pos; - pos = bss->ies; + pos = bss->cbss.information_elements; if (pos == NULL) return NULL; - end = pos + bss->ies_len; + end = pos + bss->cbss.len_information_elements; while (pos + 1 < end) { if (pos + 2 + pos[1] > end) @@ -73,7 +61,7 @@ static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) static int ieee80211_compatible_rates(struct ieee80211_bss *bss, struct ieee80211_supported_band *sband, - u64 *rates) + u32 *rates) { int i, j, count; *rates = 0; @@ -92,160 +80,40 @@ static int ieee80211_compatible_rates(struct ieee80211_bss *bss, return count; } -/* also used by mesh code */ -u64 ieee80211_sta_get_rates(struct ieee80211_local *local, - struct ieee802_11_elems *elems, - enum ieee80211_band band) -{ - struct ieee80211_supported_band *sband; - struct ieee80211_rate *bitrates; - size_t num_rates; - u64 supp_rates; - int i, j; - sband = local->hw.wiphy->bands[band]; - - if (!sband) { - WARN_ON(1); - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - } - - bitrates = sband->bitrates; - num_rates = sband->n_bitrates; - supp_rates = 0; - for (i = 0; i < elems->supp_rates_len + - elems->ext_supp_rates_len; i++) { - u8 rate = 0; - int own_rate; - if (i < elems->supp_rates_len) - rate = elems->supp_rates[i]; - else if (elems->ext_supp_rates) - rate = elems->ext_supp_rates - [i - elems->supp_rates_len]; - own_rate = 5 * (rate & 0x7f); - for (j = 0; j < num_rates; j++) - if (bitrates[j].bitrate == own_rate) - supp_rates |= BIT(j); - } - return supp_rates; -} - /* frame sending functions */ -/* also used by scanning code */ -void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, - u8 *ssid, size_t ssid_len) +static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len) { - struct ieee80211_local *local = sdata->local; - struct ieee80211_supported_band *sband; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - u8 *pos, *supp_rates, *esupp_rates = NULL; - int i; - - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for probe " - "request\n", sdata->dev->name); - return; - } - skb_reserve(skb, local->hw.extra_tx_headroom); - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_PROBE_REQ); - memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - if (dst) { - memcpy(mgmt->da, dst, ETH_ALEN); - memcpy(mgmt->bssid, dst, ETH_ALEN); - } else { - memset(mgmt->da, 0xff, ETH_ALEN); - memset(mgmt->bssid, 0xff, ETH_ALEN); - } - pos = skb_put(skb, 2 + ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ssid_len; - memcpy(pos, ssid, ssid_len); - - supp_rates = skb_put(skb, 2); - supp_rates[0] = WLAN_EID_SUPP_RATES; - supp_rates[1] = 0; - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - - for (i = 0; i < sband->n_bitrates; i++) { - struct ieee80211_rate *rate = &sband->bitrates[i]; - if (esupp_rates) { - pos = skb_put(skb, 1); - esupp_rates[1]++; - } else if (supp_rates[1] == 8) { - esupp_rates = skb_put(skb, 3); - esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; - esupp_rates[1] = 1; - pos = &esupp_rates[2]; - } else { - pos = skb_put(skb, 1); - supp_rates[1]++; - } - *pos = rate->bitrate / 5; - } - - ieee80211_tx_skb(sdata, skb, 0); + if (ies) + memcpy(skb_put(skb, ies_len), ies, ies_len); } -static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, - int transaction, u8 *extra, size_t extra_len, - int encrypt) +static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - - skb = dev_alloc_skb(local->hw.extra_tx_headroom + - sizeof(*mgmt) + 6 + extra_len); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for auth " - "frame\n", sdata->dev->name); - return; - } - skb_reserve(skb, local->hw.extra_tx_headroom); - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); - memset(mgmt, 0, 24 + 6); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_AUTH); - if (encrypt) - mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); - memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); - mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); - ifsta->auth_transaction = transaction + 1; - mgmt->u.auth.status_code = cpu_to_le16(0); - if (extra) - memcpy(skb_put(skb, extra_len), extra, extra_len); - - ieee80211_tx_skb(sdata, skb, encrypt); -} - -static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = sdata->local; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - u8 *pos, *ies, *ht_ie; + u8 *pos, *ies, *ht_ie, *e_ies; int i, len, count, rates_len, supp_rates_len; u16 capab; struct ieee80211_bss *bss; int wmm = 0; struct ieee80211_supported_band *sband; - u64 rates = 0; + u32 rates = 0; + size_t e_ies_len; + + if (ifmgd->flags & IEEE80211_IBSS_PREV_BSSID_SET) { + e_ies = sdata->u.mgd.ie_reassocreq; + e_ies_len = sdata->u.mgd.ie_reassocreq_len; + } else { + e_ies = sdata->u.mgd.ie_assocreq; + e_ies_len = sdata->u.mgd.ie_assocreq_len; + } skb = dev_alloc_skb(local->hw.extra_tx_headroom + - sizeof(*mgmt) + 200 + ifsta->extra_ie_len + - ifsta->ssid_len); + sizeof(*mgmt) + 200 + ifmgd->extra_ie_len + + ifmgd->ssid_len + e_ies_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " "frame\n", sdata->dev->name); @@ -255,7 +123,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - capab = ifsta->capab; + capab = ifmgd->capab; if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) @@ -264,11 +132,11 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; } - bss = ieee80211_rx_bss_get(local, ifsta->bssid, + bss = ieee80211_rx_bss_get(local, ifmgd->bssid, local->hw.conf.channel->center_freq, - ifsta->ssid, ifsta->ssid_len); + ifmgd->ssid, ifmgd->ssid_len); if (bss) { - if (bss->capability & WLAN_CAPABILITY_PRIVACY) + if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY) capab |= WLAN_CAPABILITY_PRIVACY; if (bss->wmm_used) wmm = 1; @@ -279,7 +147,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, * b-only mode) */ rates_len = ieee80211_compatible_rates(bss, sband, &rates); - if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && + if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; @@ -291,18 +159,18 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); memset(mgmt, 0, 24); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); + memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); + memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); - if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { + if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) { skb_put(skb, 10); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ); mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); mgmt->u.reassoc_req.listen_interval = cpu_to_le16(local->hw.conf.listen_interval); - memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, + memcpy(mgmt->u.reassoc_req.current_ap, ifmgd->prev_bssid, ETH_ALEN); } else { skb_put(skb, 4); @@ -314,10 +182,10 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, } /* SSID */ - ies = pos = skb_put(skb, 2 + ifsta->ssid_len); + ies = pos = skb_put(skb, 2 + ifmgd->ssid_len); *pos++ = WLAN_EID_SSID; - *pos++ = ifsta->ssid_len; - memcpy(pos, ifsta->ssid, ifsta->ssid_len); + *pos++ = ifmgd->ssid_len; + memcpy(pos, ifmgd->ssid, ifmgd->ssid_len); /* add all rates which were marked to be used above */ supp_rates_len = rates_len; @@ -372,12 +240,12 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, } } - if (ifsta->extra_ie) { - pos = skb_put(skb, ifsta->extra_ie_len); - memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); + if (ifmgd->extra_ie) { + pos = skb_put(skb, ifmgd->extra_ie_len); + memcpy(pos, ifmgd->extra_ie, ifmgd->extra_ie_len); } - if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { + if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) { pos = skb_put(skb, 9); *pos++ = WLAN_EID_VENDOR_SPECIFIC; *pos++ = 7; /* len */ @@ -391,10 +259,17 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, } /* wmm support is a must to HT */ - if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && + /* + * IEEE802.11n does not allow TKIP/WEP as pairwise + * ciphers in HT mode. We still associate in non-ht + * mode (11a/b/g) if any one of these ciphers is + * configured as pairwise. + */ + if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && sband->ht_cap.ht_supported && (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && - ht_ie[1] >= sizeof(struct ieee80211_ht_info)) { + ht_ie[1] >= sizeof(struct ieee80211_ht_info) && + (!(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))) { struct ieee80211_ht_info *ht_info = (struct ieee80211_ht_info *)(ht_ie + 2); u16 cap = sband->ht_cap.cap; @@ -429,11 +304,13 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); } - kfree(ifsta->assocreq_ies); - ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; - ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); - if (ifsta->assocreq_ies) - memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); + add_extra_ies(skb, e_ies, e_ies_len); + + kfree(ifmgd->assocreq_ies); + ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies; + ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL); + if (ifmgd->assocreq_ies) + memcpy(ifmgd->assocreq_ies, ies, ifmgd->assocreq_ies_len); ieee80211_tx_skb(sdata, skb, 0); } @@ -443,11 +320,22 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, u16 stype, u16 reason) { struct ieee80211_local *local = sdata->local; - struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; + u8 *ies; + size_t ies_len; + + if (stype == IEEE80211_STYPE_DEAUTH) { + ies = sdata->u.mgd.ie_deauth; + ies_len = sdata->u.mgd.ie_deauth_len; + } else { + ies = sdata->u.mgd.ie_disassoc; + ies_len = sdata->u.mgd.ie_disassoc_len; + } - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + + ies_len); if (!skb) { printk(KERN_DEBUG "%s: failed to allocate buffer for " "deauth/disassoc frame\n", sdata->dev->name); @@ -457,40 +345,53 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); memset(mgmt, 0, 24); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); + memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); + memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); skb_put(skb, 2); /* u.deauth.reason_code == u.disassoc.reason_code */ mgmt->u.deauth.reason_code = cpu_to_le16(reason); - ieee80211_tx_skb(sdata, skb, 0); + add_extra_ies(skb, ies, ies_len); + + ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED); } -/* MLME */ -static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, - struct ieee80211_bss *bss) +void ieee80211_send_pspoll(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) { - struct ieee80211_local *local = sdata->local; - int i, have_higher_than_11mbit = 0; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_pspoll *pspoll; + struct sk_buff *skb; + u16 fc; - /* cf. IEEE 802.11 9.2.12 */ - for (i = 0; i < bss->supp_rates_len; i++) - if ((bss->supp_rates[i] & 0x7f) * 5 > 110) - have_higher_than_11mbit = 1; + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for " + "pspoll frame\n", sdata->dev->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); - if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && - have_higher_than_11mbit) - sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; - else - sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; + pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); + memset(pspoll, 0, sizeof(*pspoll)); + fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM; + pspoll->frame_control = cpu_to_le16(fc); + pspoll->aid = cpu_to_le16(ifmgd->aid); - ieee80211_set_wmm_default(sdata); + /* aid in PS-Poll has its two MSBs each set to 1 */ + pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); + + memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN); + memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN); + + ieee80211_tx_skb(sdata, skb, 0); } +/* MLME */ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, - struct ieee80211_if_sta *ifsta, + struct ieee80211_if_managed *ifmgd, u8 *wmm_param, size_t wmm_param_len) { struct ieee80211_tx_queue_params params; @@ -498,7 +399,7 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, int count; u8 *pos; - if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) + if (!(ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) return; if (!wmm_param) @@ -507,18 +408,15 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) return; count = wmm_param[6] & 0x0f; - if (count == ifsta->wmm_last_param_set) + if (count == ifmgd->wmm_last_param_set) return; - ifsta->wmm_last_param_set = count; + ifmgd->wmm_last_param_set = count; pos = wmm_param + 8; left = wmm_param_len - 8; memset(¶ms, 0, sizeof(params)); - if (!local->ops->conf_tx) - return; - local->wmm_acm = 0; for (; left >= 4; left -= 4, pos += 4) { int aci = (pos[0] >> 5) & 0x03; @@ -526,26 +424,26 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, int queue; switch (aci) { - case 1: + case 1: /* AC_BK */ queue = 3; if (acm) - local->wmm_acm |= BIT(0) | BIT(3); + local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ break; - case 2: + case 2: /* AC_VI */ queue = 1; if (acm) - local->wmm_acm |= BIT(4) | BIT(5); + local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ break; - case 3: + case 3: /* AC_VO */ queue = 0; if (acm) - local->wmm_acm |= BIT(6) | BIT(7); + local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ break; - case 0: + case 0: /* AC_BE */ default: queue = 2; if (acm) - local->wmm_acm |= BIT(1) | BIT(2); + local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ break; } @@ -559,21 +457,41 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, params.cw_max, params.txop); #endif - /* TODO: handle ACM (block TX, fallback to next lowest allowed - * AC for now) */ - if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { + if (local->ops->conf_tx && + local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { printk(KERN_DEBUG "%s: failed to set TX queue " "parameters for queue %d\n", local->mdev->name, queue); } } } +static bool ieee80211_check_tim(struct ieee802_11_elems *elems, u16 aid) +{ + u8 mask; + u8 index, indexn1, indexn2; + struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim; + + aid &= 0x3fff; + index = aid / 8; + mask = 1 << (aid & 7); + + indexn1 = tim->bitmap_ctrl & 0xfe; + indexn2 = elems->tim_len + indexn1 - 4; + + if (index < indexn1 || index > indexn2) + return false; + + index -= indexn1; + + return !!(tim->virtual_map[index] & mask); +} + static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, u16 capab, bool erp_valid, u8 erp) { struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; #ifdef CONFIG_MAC80211_VERBOSE_DEBUG - struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; #endif u32 changed = 0; bool use_protection; @@ -596,7 +514,7 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", sdata->dev->name, use_protection ? "enabled" : "disabled", - ifsta->bssid); + ifmgd->bssid); } #endif bss_conf->use_cts_prot = use_protection; @@ -610,7 +528,7 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, " (BSSID=%pM)\n", sdata->dev->name, use_short_preamble ? "short" : "long", - ifsta->bssid); + ifmgd->bssid); } #endif bss_conf->use_short_preamble = use_short_preamble; @@ -624,7 +542,7 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, " (BSSID=%pM)\n", sdata->dev->name, use_short_slot ? "short" : "long", - ifsta->bssid); + ifmgd->bssid); } #endif bss_conf->use_short_slot = use_short_slot; @@ -634,57 +552,57 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, return changed; } -static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata) { union iwreq_data wrqu; + memset(&wrqu, 0, sizeof(wrqu)); - if (ifsta->flags & IEEE80211_STA_ASSOCIATED) - memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); + if (sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED) + memcpy(wrqu.ap_addr.sa_data, sdata->u.mgd.bssid, ETH_ALEN); wrqu.ap_addr.sa_family = ARPHRD_ETHER; wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); } -static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; char *buf; size_t len; int i; union iwreq_data wrqu; - if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) + if (!ifmgd->assocreq_ies && !ifmgd->assocresp_ies) return; - buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + - ifsta->assocresp_ies_len), GFP_KERNEL); + buf = kmalloc(50 + 2 * (ifmgd->assocreq_ies_len + + ifmgd->assocresp_ies_len), GFP_KERNEL); if (!buf) return; len = sprintf(buf, "ASSOCINFO("); - if (ifsta->assocreq_ies) { + if (ifmgd->assocreq_ies) { len += sprintf(buf + len, "ReqIEs="); - for (i = 0; i < ifsta->assocreq_ies_len; i++) { + for (i = 0; i < ifmgd->assocreq_ies_len; i++) { len += sprintf(buf + len, "%02x", - ifsta->assocreq_ies[i]); + ifmgd->assocreq_ies[i]); } } - if (ifsta->assocresp_ies) { - if (ifsta->assocreq_ies) + if (ifmgd->assocresp_ies) { + if (ifmgd->assocreq_ies) len += sprintf(buf + len, " "); len += sprintf(buf + len, "RespIEs="); - for (i = 0; i < ifsta->assocresp_ies_len; i++) { + for (i = 0; i < ifmgd->assocresp_ies_len; i++) { len += sprintf(buf + len, "%02x", - ifsta->assocresp_ies[i]); + ifmgd->assocresp_ies[i]); } } len += sprintf(buf + len, ")"); if (len > IW_CUSTOM_MAX) { len = sprintf(buf, "ASSOCRESPIE="); - for (i = 0; i < ifsta->assocresp_ies_len; i++) { + for (i = 0; i < ifmgd->assocresp_ies_len; i++) { len += sprintf(buf + len, "%02x", - ifsta->assocresp_ies[i]); + ifmgd->assocresp_ies[i]); } } @@ -699,40 +617,37 @@ static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, u32 bss_info_changed) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct ieee80211_conf *conf = &local_to_hw(local)->conf; struct ieee80211_bss *bss; bss_info_changed |= BSS_CHANGED_ASSOC; - ifsta->flags |= IEEE80211_STA_ASSOCIATED; + ifmgd->flags |= IEEE80211_STA_ASSOCIATED; - if (sdata->vif.type != NL80211_IFTYPE_STATION) - return; - - bss = ieee80211_rx_bss_get(local, ifsta->bssid, + bss = ieee80211_rx_bss_get(local, ifmgd->bssid, conf->channel->center_freq, - ifsta->ssid, ifsta->ssid_len); + ifmgd->ssid, ifmgd->ssid_len); if (bss) { /* set timing information */ - sdata->vif.bss_conf.beacon_int = bss->beacon_int; - sdata->vif.bss_conf.timestamp = bss->timestamp; + sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval; + sdata->vif.bss_conf.timestamp = bss->cbss.tsf; sdata->vif.bss_conf.dtim_period = bss->dtim_period; bss_info_changed |= ieee80211_handle_bss_capability(sdata, - bss->capability, bss->has_erp_value, bss->erp_value); + bss->cbss.capability, bss->has_erp_value, bss->erp_value); ieee80211_rx_bss_put(local, bss); } - ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; - memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); - ieee80211_sta_send_associnfo(sdata, ifsta); + ifmgd->flags |= IEEE80211_STA_PREV_BSSID_SET; + memcpy(ifmgd->prev_bssid, sdata->u.mgd.bssid, ETH_ALEN); + ieee80211_sta_send_associnfo(sdata); - ifsta->last_probe = jiffies; + ifmgd->last_probe = jiffies; ieee80211_led_assoc(local, 1); sdata->vif.bss_conf.assoc = 1; @@ -745,72 +660,90 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, ieee80211_bss_info_change_notify(sdata, bss_info_changed); if (local->powersave) { - if (local->dynamic_ps_timeout > 0) + if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) && + local->hw.conf.dynamic_ps_timeout > 0) { mod_timer(&local->dynamic_ps_timer, jiffies + - msecs_to_jiffies(local->dynamic_ps_timeout)); - else { + msecs_to_jiffies( + local->hw.conf.dynamic_ps_timeout)); + } else { + if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) + ieee80211_send_nullfunc(local, sdata, 1); conf->flags |= IEEE80211_CONF_PS; - ieee80211_hw_config(local, - IEEE80211_CONF_CHANGE_PS); + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); } } netif_tx_start_all_queues(sdata->dev); netif_carrier_on(sdata->dev); - ieee80211_sta_send_apinfo(sdata, ifsta); + ieee80211_sta_send_apinfo(sdata); } -static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata) { - ifsta->direct_probe_tries++; - if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + ifmgd->direct_probe_tries++; + if (ifmgd->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", - sdata->dev->name, ifsta->bssid); - ifsta->state = IEEE80211_STA_MLME_DISABLED; - ieee80211_sta_send_apinfo(sdata, ifsta); + sdata->dev->name, ifmgd->bssid); + ifmgd->state = IEEE80211_STA_MLME_DISABLED; + ieee80211_sta_send_apinfo(sdata); + + /* + * Most likely AP is not in the range so remove the + * bss information associated to the AP + */ + ieee80211_rx_bss_remove(sdata, ifmgd->bssid, + sdata->local->hw.conf.channel->center_freq, + ifmgd->ssid, ifmgd->ssid_len); return; } printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", - sdata->dev->name, ifsta->bssid, - ifsta->direct_probe_tries); + sdata->dev->name, ifmgd->bssid, + ifmgd->direct_probe_tries); - ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; + ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; - set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); + set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifmgd->request); /* Direct probe is sent to broadcast address as some APs * will not answer to direct packet in unassociated state. */ ieee80211_send_probe_req(sdata, NULL, - ifsta->ssid, ifsta->ssid_len); + ifmgd->ssid, ifmgd->ssid_len, NULL, 0); - mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); + mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); } -static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata) { - ifsta->auth_tries++; - if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + ifmgd->auth_tries++; + if (ifmgd->auth_tries > IEEE80211_AUTH_MAX_TRIES) { printk(KERN_DEBUG "%s: authentication with AP %pM" " timed out\n", - sdata->dev->name, ifsta->bssid); - ifsta->state = IEEE80211_STA_MLME_DISABLED; - ieee80211_sta_send_apinfo(sdata, ifsta); + sdata->dev->name, ifmgd->bssid); + ifmgd->state = IEEE80211_STA_MLME_DISABLED; + ieee80211_sta_send_apinfo(sdata); + ieee80211_rx_bss_remove(sdata, ifmgd->bssid, + sdata->local->hw.conf.channel->center_freq, + ifmgd->ssid, ifmgd->ssid_len); return; } - ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; + ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; printk(KERN_DEBUG "%s: authenticate with AP %pM\n", - sdata->dev->name, ifsta->bssid); + sdata->dev->name, ifmgd->bssid); - ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); + ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, NULL, 0, + ifmgd->bssid, 0); + ifmgd->auth_transaction = 2; - mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); + mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); } /* @@ -818,32 +751,33 @@ static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, * if self disconnected or a reason code from the AP. */ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, bool deauth, - bool self_disconnected, u16 reason) + bool deauth, bool self_disconnected, + u16 reason) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct sta_info *sta; u32 changed = 0, config_changed = 0; rcu_read_lock(); - sta = sta_info_get(local, ifsta->bssid); + sta = sta_info_get(local, ifmgd->bssid); if (!sta) { rcu_read_unlock(); return; } if (deauth) { - ifsta->direct_probe_tries = 0; - ifsta->auth_tries = 0; + ifmgd->direct_probe_tries = 0; + ifmgd->auth_tries = 0; } - ifsta->assoc_scan_tries = 0; - ifsta->assoc_tries = 0; + ifmgd->assoc_scan_tries = 0; + ifmgd->assoc_tries = 0; netif_tx_stop_all_queues(sdata->dev); netif_carrier_off(sdata->dev); - ieee80211_sta_tear_down_BA_sessions(sdata, sta->sta.addr); + ieee80211_sta_tear_down_BA_sessions(sta); if (self_disconnected) { if (deauth) @@ -854,23 +788,28 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, IEEE80211_STYPE_DISASSOC, reason); } - ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; + ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; changed |= ieee80211_reset_erp_info(sdata); ieee80211_led_assoc(local, 0); changed |= BSS_CHANGED_ASSOC; sdata->vif.bss_conf.assoc = false; - ieee80211_sta_send_apinfo(sdata, ifsta); + ieee80211_sta_send_apinfo(sdata); - if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) - ifsta->state = IEEE80211_STA_MLME_DISABLED; + if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) { + ifmgd->state = IEEE80211_STA_MLME_DISABLED; + ieee80211_rx_bss_remove(sdata, ifmgd->bssid, + sdata->local->hw.conf.channel->center_freq, + ifmgd->ssid, ifmgd->ssid_len); + } rcu_read_unlock(); - local->hw.conf.ht.enabled = false; + /* channel(_type) changes are handled by ieee80211_hw_config */ local->oper_channel_type = NL80211_CHAN_NO_HT; - config_changed |= IEEE80211_CONF_CHANGE_HT; + + local->power_constr_level = 0; del_timer_sync(&local->dynamic_ps_timer); cancel_work_sync(&local->dynamic_ps_enable_work); @@ -885,7 +824,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, rcu_read_lock(); - sta = sta_info_get(local, ifsta->bssid); + sta = sta_info_get(local, ifmgd->bssid); if (!sta) { rcu_read_unlock(); return; @@ -906,27 +845,27 @@ static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) return 1; } -static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct ieee80211_bss *bss; int bss_privacy; int wep_privacy; int privacy_invoked; - if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) + if (!ifmgd || (ifmgd->flags & IEEE80211_STA_MIXED_CELL)) return 0; - bss = ieee80211_rx_bss_get(local, ifsta->bssid, + bss = ieee80211_rx_bss_get(local, ifmgd->bssid, local->hw.conf.channel->center_freq, - ifsta->ssid, ifsta->ssid_len); + ifmgd->ssid, ifmgd->ssid_len); if (!bss) return 0; - bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); + bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY); wep_privacy = !!ieee80211_sta_wep_configured(sdata); - privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); + privacy_invoked = !!(ifmgd->flags & IEEE80211_STA_PRIVACY_INVOKED); ieee80211_rx_bss_put(local, bss); @@ -936,38 +875,42 @@ static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, return 1; } -static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_associate(struct ieee80211_sub_if_data *sdata) { - ifsta->assoc_tries++; - if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + ifmgd->assoc_tries++; + if (ifmgd->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { printk(KERN_DEBUG "%s: association with AP %pM" " timed out\n", - sdata->dev->name, ifsta->bssid); - ifsta->state = IEEE80211_STA_MLME_DISABLED; - ieee80211_sta_send_apinfo(sdata, ifsta); + sdata->dev->name, ifmgd->bssid); + ifmgd->state = IEEE80211_STA_MLME_DISABLED; + ieee80211_sta_send_apinfo(sdata); + ieee80211_rx_bss_remove(sdata, ifmgd->bssid, + sdata->local->hw.conf.channel->center_freq, + ifmgd->ssid, ifmgd->ssid_len); return; } - ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; + ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; printk(KERN_DEBUG "%s: associate with AP %pM\n", - sdata->dev->name, ifsta->bssid); - if (ieee80211_privacy_mismatch(sdata, ifsta)) { + sdata->dev->name, ifmgd->bssid); + if (ieee80211_privacy_mismatch(sdata)) { printk(KERN_DEBUG "%s: mismatch in privacy configuration and " "mixed-cell disabled - abort association\n", sdata->dev->name); - ifsta->state = IEEE80211_STA_MLME_DISABLED; + ifmgd->state = IEEE80211_STA_MLME_DISABLED; return; } - ieee80211_send_assoc(sdata, ifsta); + ieee80211_send_assoc(sdata); - mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); + mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); } -static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct sta_info *sta; int disassoc; @@ -977,38 +920,40 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, * for better APs. */ /* TODO: remove expired BSSes */ - ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; + ifmgd->state = IEEE80211_STA_MLME_ASSOCIATED; rcu_read_lock(); - sta = sta_info_get(local, ifsta->bssid); + sta = sta_info_get(local, ifmgd->bssid); if (!sta) { printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", - sdata->dev->name, ifsta->bssid); + sdata->dev->name, ifmgd->bssid); disassoc = 1; } else { disassoc = 0; if (time_after(jiffies, sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { - if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { + if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { printk(KERN_DEBUG "%s: No ProbeResp from " "current AP %pM - assume out of " "range\n", - sdata->dev->name, ifsta->bssid); + sdata->dev->name, ifmgd->bssid); disassoc = 1; } else - ieee80211_send_probe_req(sdata, ifsta->bssid, - ifsta->ssid, - ifsta->ssid_len); - ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; + ieee80211_send_probe_req(sdata, ifmgd->bssid, + ifmgd->ssid, + ifmgd->ssid_len, + NULL, 0); + ifmgd->flags ^= IEEE80211_STA_PROBEREQ_POLL; } else { - ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; - if (time_after(jiffies, ifsta->last_probe + + ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; + if (time_after(jiffies, ifmgd->last_probe + IEEE80211_PROBE_INTERVAL)) { - ifsta->last_probe = jiffies; - ieee80211_send_probe_req(sdata, ifsta->bssid, - ifsta->ssid, - ifsta->ssid_len); + ifmgd->last_probe = jiffies; + ieee80211_send_probe_req(sdata, ifmgd->bssid, + ifmgd->ssid, + ifmgd->ssid_len, + NULL, 0); } } } @@ -1016,25 +961,25 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, rcu_read_unlock(); if (disassoc) - ieee80211_set_disassoc(sdata, ifsta, true, true, + ieee80211_set_disassoc(sdata, true, true, WLAN_REASON_PREV_AUTH_NOT_VALID); else - mod_timer(&ifsta->timer, jiffies + + mod_timer(&ifmgd->timer, jiffies + IEEE80211_MONITORING_INTERVAL); } -static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); - ifsta->flags |= IEEE80211_STA_AUTHENTICATED; - ieee80211_associate(sdata, ifsta); + ifmgd->flags |= IEEE80211_STA_AUTHENTICATED; + ieee80211_associate(sdata); } static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, size_t len) { @@ -1045,50 +990,37 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); if (!elems.challenge) return; - ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, - elems.challenge_len + 2, 1); + ieee80211_send_auth(sdata, 3, sdata->u.mgd.auth_alg, + elems.challenge - 2, elems.challenge_len + 2, + sdata->u.mgd.bssid, 1); + sdata->u.mgd.auth_transaction = 4; } static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, size_t len) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u16 auth_alg, auth_transaction, status_code; - if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && - sdata->vif.type != NL80211_IFTYPE_ADHOC) + if (ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE) return; if (len < 24 + 6) return; - if (sdata->vif.type != NL80211_IFTYPE_ADHOC && - memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) + if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) return; - if (sdata->vif.type != NL80211_IFTYPE_ADHOC && - memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) + if (memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) return; auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); status_code = le16_to_cpu(mgmt->u.auth.status_code); - if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { - /* - * IEEE 802.11 standard does not require authentication in IBSS - * networks and most implementations do not seem to use it. - * However, try to reply to authentication attempts if someone - * has actually implemented this. - */ - if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) - return; - ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); - } - - if (auth_alg != ifsta->auth_alg || - auth_transaction != ifsta->auth_transaction) + if (auth_alg != ifmgd->auth_alg || + auth_transaction != ifmgd->auth_transaction) return; if (status_code != WLAN_STATUS_SUCCESS) { @@ -1097,15 +1029,15 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, const int num_algs = ARRAY_SIZE(algs); int i, pos; algs[0] = algs[1] = algs[2] = 0xff; - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) + if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) algs[0] = WLAN_AUTH_OPEN; - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) + if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) algs[1] = WLAN_AUTH_SHARED_KEY; - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) + if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) algs[2] = WLAN_AUTH_LEAP; - if (ifsta->auth_alg == WLAN_AUTH_OPEN) + if (ifmgd->auth_alg == WLAN_AUTH_OPEN) pos = 0; - else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) + else if (ifmgd->auth_alg == WLAN_AUTH_SHARED_KEY) pos = 1; else pos = 2; @@ -1113,105 +1045,105 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, pos++; if (pos >= num_algs) pos = 0; - if (algs[pos] == ifsta->auth_alg || + if (algs[pos] == ifmgd->auth_alg || algs[pos] == 0xff) continue; if (algs[pos] == WLAN_AUTH_SHARED_KEY && !ieee80211_sta_wep_configured(sdata)) continue; - ifsta->auth_alg = algs[pos]; + ifmgd->auth_alg = algs[pos]; break; } } return; } - switch (ifsta->auth_alg) { + switch (ifmgd->auth_alg) { case WLAN_AUTH_OPEN: case WLAN_AUTH_LEAP: - ieee80211_auth_completed(sdata, ifsta); + ieee80211_auth_completed(sdata); break; case WLAN_AUTH_SHARED_KEY: - if (ifsta->auth_transaction == 4) - ieee80211_auth_completed(sdata, ifsta); + if (ifmgd->auth_transaction == 4) + ieee80211_auth_completed(sdata); else - ieee80211_auth_challenge(sdata, ifsta, mgmt, len); + ieee80211_auth_challenge(sdata, mgmt, len); break; } } static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, size_t len) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u16 reason_code; if (len < 24 + 2) return; - if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) + if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) return; reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); - if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) + if (ifmgd->flags & IEEE80211_STA_AUTHENTICATED) printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", sdata->dev->name, reason_code); - if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || - ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || - ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { - ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; - mod_timer(&ifsta->timer, jiffies + + if (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE || + ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE || + ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { + ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; + mod_timer(&ifmgd->timer, jiffies + IEEE80211_RETRY_AUTH_INTERVAL); } - ieee80211_set_disassoc(sdata, ifsta, true, false, 0); - ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; + ieee80211_set_disassoc(sdata, true, false, 0); + ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED; } static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, size_t len) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u16 reason_code; if (len < 24 + 2) return; - if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) + if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) return; reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); - if (ifsta->flags & IEEE80211_STA_ASSOCIATED) + if (ifmgd->flags & IEEE80211_STA_ASSOCIATED) printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", sdata->dev->name, reason_code); - if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { - ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; - mod_timer(&ifsta->timer, jiffies + + if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { + ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; + mod_timer(&ifmgd->timer, jiffies + IEEE80211_RETRY_AUTH_INTERVAL); } - ieee80211_set_disassoc(sdata, ifsta, false, false, reason_code); + ieee80211_set_disassoc(sdata, false, false, reason_code); } static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, size_t len, int reassoc) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; struct sta_info *sta; - u64 rates, basic_rates; + u32 rates, basic_rates; u16 capab_info, status_code, aid; struct ieee802_11_elems elems; struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; @@ -1224,13 +1156,13 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, /* AssocResp and ReassocResp have identical structure, so process both * of them in this function. */ - if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) + if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) return; if (len < 24 + 6) return; - if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) + if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) return; capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); @@ -1242,13 +1174,31 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); + pos = mgmt->u.assoc_resp.variable; + ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); + + if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && + elems.timeout_int && elems.timeout_int_len == 5 && + elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { + u32 tu, ms; + tu = get_unaligned_le32(elems.timeout_int + 1); + ms = tu * 1024 / 1000; + printk(KERN_DEBUG "%s: AP rejected association temporarily; " + "comeback duration %u TU (%u ms)\n", + sdata->dev->name, tu, ms); + if (ms > IEEE80211_ASSOC_TIMEOUT) + mod_timer(&ifmgd->timer, + jiffies + msecs_to_jiffies(ms)); + return; + } + if (status_code != WLAN_STATUS_SUCCESS) { printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", sdata->dev->name, status_code); /* if this was a reassociation, ensure we try a "full" * association next time. This works around some broken APs * which do not correctly reject reassociation requests. */ - ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; + ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; return; } @@ -1257,9 +1207,6 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, "set\n", sdata->dev->name, aid); aid &= ~(BIT(15) | BIT(14)); - pos = mgmt->u.assoc_resp.variable; - ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); - if (!elems.supp_rates) { printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", sdata->dev->name); @@ -1267,40 +1214,29 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, } printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); - ifsta->aid = aid; - ifsta->ap_capab = capab_info; + ifmgd->aid = aid; + ifmgd->ap_capab = capab_info; - kfree(ifsta->assocresp_ies); - ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); - ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); - if (ifsta->assocresp_ies) - memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); + kfree(ifmgd->assocresp_ies); + ifmgd->assocresp_ies_len = len - (pos - (u8 *) mgmt); + ifmgd->assocresp_ies = kmalloc(ifmgd->assocresp_ies_len, GFP_KERNEL); + if (ifmgd->assocresp_ies) + memcpy(ifmgd->assocresp_ies, pos, ifmgd->assocresp_ies_len); rcu_read_lock(); /* Add STA entry for the AP */ - sta = sta_info_get(local, ifsta->bssid); + sta = sta_info_get(local, ifmgd->bssid); if (!sta) { - struct ieee80211_bss *bss; - newsta = true; - sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); + sta = sta_info_alloc(sdata, ifmgd->bssid, GFP_ATOMIC); if (!sta) { printk(KERN_DEBUG "%s: failed to alloc STA entry for" " the AP\n", sdata->dev->name); rcu_read_unlock(); return; } - bss = ieee80211_rx_bss_get(local, ifsta->bssid, - local->hw.conf.channel->center_freq, - ifsta->ssid, ifsta->ssid_len); - if (bss) { - sta->last_signal = bss->signal; - sta->last_qual = bss->qual; - sta->last_noise = bss->noise; - ieee80211_rx_bss_put(local, bss); - } /* update new sta with its last rx activity */ sta->last_rx = jiffies; @@ -1367,7 +1303,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, else sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; - if (elems.ht_cap_elem) + /* If TKIP/WEP is used, no need to parse AP's HT capabilities */ + if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) ieee80211_ht_cap_ie_to_sta_ht_cap(sband, elems.ht_cap_elem, &sta->sta.ht_cap); @@ -1375,6 +1312,9 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, rate_control_rate_init(sta); + if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) + set_sta_flags(sta, WLAN_STA_MFP); + if (elems.wmm_param) set_sta_flags(sta, WLAN_STA_WME); @@ -1391,11 +1331,12 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, rcu_read_unlock(); if (elems.wmm_param) - ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, + ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, elems.wmm_param_len); if (elems.ht_info_elem && elems.wmm_param && - (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) + (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && + !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, ap_ht_cap_flags); @@ -1403,136 +1344,12 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, * ieee80211_set_associated() will tell the driver */ bss_conf->aid = aid; bss_conf->assoc_capability = capab_info; - ieee80211_set_associated(sdata, ifsta, changed); + ieee80211_set_associated(sdata, changed); - ieee80211_associated(sdata, ifsta); + ieee80211_associated(sdata); } -static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, - struct ieee80211_bss *bss) -{ - struct ieee80211_local *local = sdata->local; - int res, rates, i, j; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - u8 *pos; - struct ieee80211_supported_band *sband; - union iwreq_data wrqu; - - skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for probe " - "response\n", sdata->dev->name); - return -ENOMEM; - } - - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - - /* Remove possible STA entries from other IBSS networks. */ - sta_info_flush_delayed(sdata); - - if (local->ops->reset_tsf) { - /* Reset own TSF to allow time synchronization work. */ - local->ops->reset_tsf(local_to_hw(local)); - } - memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); - res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); - if (res) - return res; - - local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; - - sdata->drop_unencrypted = bss->capability & - WLAN_CAPABILITY_PRIVACY ? 1 : 0; - - res = ieee80211_set_freq(sdata, bss->freq); - - if (res) - return res; - - /* Build IBSS probe response */ - - skb_reserve(skb, local->hw.extra_tx_headroom); - - mgmt = (struct ieee80211_mgmt *) - skb_put(skb, 24 + sizeof(mgmt->u.beacon)); - memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_PROBE_RESP); - memset(mgmt->da, 0xff, ETH_ALEN); - memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->u.beacon.beacon_int = - cpu_to_le16(local->hw.conf.beacon_int); - mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); - mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); - - pos = skb_put(skb, 2 + ifsta->ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ifsta->ssid_len; - memcpy(pos, ifsta->ssid, ifsta->ssid_len); - - rates = bss->supp_rates_len; - if (rates > 8) - rates = 8; - pos = skb_put(skb, 2 + rates); - *pos++ = WLAN_EID_SUPP_RATES; - *pos++ = rates; - memcpy(pos, bss->supp_rates, rates); - - if (bss->band == IEEE80211_BAND_2GHZ) { - pos = skb_put(skb, 2 + 1); - *pos++ = WLAN_EID_DS_PARAMS; - *pos++ = 1; - *pos++ = ieee80211_frequency_to_channel(bss->freq); - } - - pos = skb_put(skb, 2 + 2); - *pos++ = WLAN_EID_IBSS_PARAMS; - *pos++ = 2; - /* FIX: set ATIM window based on scan results */ - *pos++ = 0; - *pos++ = 0; - - if (bss->supp_rates_len > 8) { - rates = bss->supp_rates_len - 8; - pos = skb_put(skb, 2 + rates); - *pos++ = WLAN_EID_EXT_SUPP_RATES; - *pos++ = rates; - memcpy(pos, &bss->supp_rates[8], rates); - } - - ifsta->probe_resp = skb; - - ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); - - - rates = 0; - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - for (i = 0; i < bss->supp_rates_len; i++) { - int bitrate = (bss->supp_rates[i] & 0x7f) * 5; - for (j = 0; j < sband->n_bitrates; j++) - if (sband->bitrates[j].bitrate == bitrate) - rates |= BIT(j); - } - ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; - - ieee80211_sta_def_wmm_params(sdata, bss); - - ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; - mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); - - ieee80211_led_assoc(local, true); - - memset(&wrqu, 0, sizeof(wrqu)); - memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); - wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); - - return res; -} - static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, size_t len, @@ -1543,11 +1360,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; int freq; struct ieee80211_bss *bss; - struct sta_info *sta; struct ieee80211_channel *channel; - u64 beacon_timestamp, rx_timestamp; - u64 supp_rates = 0; - enum ieee80211_band band = rx_status->band; if (elems->ds_params && elems->ds_params_len == 1) freq = ieee80211_channel_to_frequency(elems->ds_params[0]); @@ -1559,112 +1372,16 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) return; - if (sdata->vif.type == NL80211_IFTYPE_ADHOC && elems->supp_rates && - memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { - supp_rates = ieee80211_sta_get_rates(local, elems, band); - - rcu_read_lock(); - - sta = sta_info_get(local, mgmt->sa); - if (sta) { - u64 prev_rates; - - prev_rates = sta->sta.supp_rates[band]; - /* make sure mandatory rates are always added */ - sta->sta.supp_rates[band] = supp_rates | - ieee80211_mandatory_rates(local, band); - -#ifdef CONFIG_MAC80211_IBSS_DEBUG - if (sta->sta.supp_rates[band] != prev_rates) - printk(KERN_DEBUG "%s: updated supp_rates set " - "for %pM based on beacon info (0x%llx | " - "0x%llx -> 0x%llx)\n", - sdata->dev->name, - sta->sta.addr, - (unsigned long long) prev_rates, - (unsigned long long) supp_rates, - (unsigned long long) sta->sta.supp_rates[band]); -#endif - } else { - ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); - } - - rcu_read_unlock(); - } - bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, - freq, beacon); + channel, beacon); if (!bss) return; - /* was just updated in ieee80211_bss_info_update */ - beacon_timestamp = bss->timestamp; - - /* - * In STA mode, the remaining parameters should not be overridden - * by beacons because they're not necessarily accurate there. - */ - if (sdata->vif.type != NL80211_IFTYPE_ADHOC && - bss->last_probe_resp && beacon) { - ieee80211_rx_bss_put(local, bss); - return; - } - - /* check if we need to merge IBSS */ - if (sdata->vif.type == NL80211_IFTYPE_ADHOC && beacon && - bss->capability & WLAN_CAPABILITY_IBSS && - bss->freq == local->oper_channel->center_freq && - elems->ssid_len == sdata->u.sta.ssid_len && - memcmp(elems->ssid, sdata->u.sta.ssid, - sdata->u.sta.ssid_len) == 0) { - if (rx_status->flag & RX_FLAG_TSFT) { - /* in order for correct IBSS merging we need mactime - * - * since mactime is defined as the time the first data - * symbol of the frame hits the PHY, and the timestamp - * of the beacon is defined as "the time that the data - * symbol containing the first bit of the timestamp is - * transmitted to the PHY plus the transmitting STA’s - * delays through its local PHY from the MAC-PHY - * interface to its interface with the WM" - * (802.11 11.1.2) - equals the time this bit arrives at - * the receiver - we have to take into account the - * offset between the two. - * e.g: at 1 MBit that means mactime is 192 usec earlier - * (=24 bytes * 8 usecs/byte) than the beacon timestamp. - */ - int rate; - if (rx_status->flag & RX_FLAG_HT) { - rate = 65; /* TODO: HT rates */ - } else { - rate = local->hw.wiphy->bands[band]-> - bitrates[rx_status->rate_idx].bitrate; - } - rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); - } else if (local && local->ops && local->ops->get_tsf) - /* second best option: get current TSF */ - rx_timestamp = local->ops->get_tsf(local_to_hw(local)); - else - /* can't merge without knowing the TSF */ - rx_timestamp = -1LLU; -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" - "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", - mgmt->sa, mgmt->bssid, - (unsigned long long)rx_timestamp, - (unsigned long long)beacon_timestamp, - (unsigned long long)(rx_timestamp - beacon_timestamp), - jiffies); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ - if (beacon_timestamp > rx_timestamp) { -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: beacon TSF higher than " - "local TSF - IBSS merge with BSSID %pM\n", - sdata->dev->name, mgmt->bssid); -#endif - ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); - ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates); - } + if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && + (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN) == 0)) { + struct ieee80211_channel_sw_ie *sw_elem = + (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; + ieee80211_process_chanswitch(sdata, sw_elem, bss); } ieee80211_rx_bss_put(local, bss); @@ -1678,7 +1395,6 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, { size_t baselen; struct ieee802_11_elems elems; - struct ieee80211_if_sta *ifsta = &sdata->u.sta; if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) return; /* ignore ProbeResp to foreign address */ @@ -1694,25 +1410,24 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, /* direct probe may be part of the association flow */ if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, - &ifsta->request)) { + &sdata->u.mgd.request)) { printk(KERN_DEBUG "%s direct probe responded\n", sdata->dev->name); - ieee80211_authenticate(sdata, ifsta); + ieee80211_authenticate(sdata); } } - static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, size_t len, struct ieee80211_rx_status *rx_status) { - struct ieee80211_if_sta *ifsta; + struct ieee80211_if_managed *ifmgd; size_t baselen; struct ieee802_11_elems elems; struct ieee80211_local *local = sdata->local; u32 changed = 0; - bool erp_valid; + bool erp_valid, directed_tim; u8 erp_value = 0; /* Process beacon from the current BSS */ @@ -1726,15 +1441,43 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (sdata->vif.type != NL80211_IFTYPE_STATION) return; - ifsta = &sdata->u.sta; - if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || - memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) + ifmgd = &sdata->u.mgd; + + if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED) || + memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) + return; + + if (rx_status->freq != local->hw.conf.channel->center_freq) return; - ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, + ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, elems.wmm_param_len); + if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { + directed_tim = ieee80211_check_tim(&elems, ifmgd->aid); + + if (directed_tim) { + if (local->hw.conf.dynamic_ps_timeout > 0) { + local->hw.conf.flags &= ~IEEE80211_CONF_PS; + ieee80211_hw_config(local, + IEEE80211_CONF_CHANGE_PS); + ieee80211_send_nullfunc(local, sdata, 0); + } else { + local->pspolling = true; + + /* + * Here is assumed that the driver will be + * able to send ps-poll frame and receive a + * response even though power save mode is + * enabled, but some drivers might require + * to disable power save here. This needs + * to be investigated. + */ + ieee80211_send_pspoll(local, sdata); + } + } + } if (elems.erp_info && elems.erp_info_len >= 1) { erp_valid = true; @@ -1747,14 +1490,15 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, erp_valid, erp_value); - if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) { + if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && + !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) { struct sta_info *sta; struct ieee80211_supported_band *sband; u16 ap_ht_cap_flags; rcu_read_lock(); - sta = sta_info_get(local, ifsta->bssid); + sta = sta_info_get(local, ifmgd->bssid); if (!sta) { rcu_read_unlock(); return; @@ -1778,92 +1522,28 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, * for the BSSID we are associated to */ regulatory_hint_11d(local->hw.wiphy, elems.country_elem, elems.country_elem_len); - } - - ieee80211_bss_info_change_notify(sdata, changed); -} - -static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_local *local = sdata->local; - int tx_last_beacon; - struct sk_buff *skb; - struct ieee80211_mgmt *resp; - u8 *pos, *end; - - if (sdata->vif.type != NL80211_IFTYPE_ADHOC || - ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || - len < 24 + 2 || !ifsta->probe_resp) - return; - - if (local->ops->tx_last_beacon) - tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); - else - tx_last_beacon = 1; - -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" - " (tx_last_beacon=%d)\n", - sdata->dev->name, mgmt->sa, mgmt->da, - mgmt->bssid, tx_last_beacon); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ - - if (!tx_last_beacon) - return; - - if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && - memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) - return; - - end = ((u8 *) mgmt) + len; - pos = mgmt->u.probe_req.variable; - if (pos[0] != WLAN_EID_SSID || - pos + 2 + pos[1] > end) { -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " - "from %pM\n", - sdata->dev->name, mgmt->sa); -#endif - return; + /* TODO: IBSS also needs this */ + if (elems.pwr_constr_elem) + ieee80211_handle_pwr_constr(sdata, + le16_to_cpu(mgmt->u.probe_resp.capab_info), + elems.pwr_constr_elem, + elems.pwr_constr_elem_len); } - if (pos[1] != 0 && - (pos[1] != ifsta->ssid_len || - memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { - /* Ignore ProbeReq for foreign SSID */ - return; - } - - /* Reply with ProbeResp */ - skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); - if (!skb) - return; - resp = (struct ieee80211_mgmt *) skb->data; - memcpy(resp->da, mgmt->sa, ETH_ALEN); -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", - sdata->dev->name, resp->da); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ - ieee80211_tx_skb(sdata, skb, 0); + ieee80211_bss_info_change_notify(sdata, changed); } -void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, - struct ieee80211_rx_status *rx_status) +ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, + struct ieee80211_rx_status *rx_status) { struct ieee80211_local *local = sdata->local; - struct ieee80211_if_sta *ifsta; struct ieee80211_mgmt *mgmt; u16 fc; if (skb->len < 24) - goto fail; - - ifsta = &sdata->u.sta; + return RX_DROP_MONITOR; mgmt = (struct ieee80211_mgmt *) skb->data; fc = le16_to_cpu(mgmt->frame_control); @@ -1878,113 +1558,68 @@ void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff * case IEEE80211_STYPE_REASSOC_RESP: case IEEE80211_STYPE_DEAUTH: case IEEE80211_STYPE_DISASSOC: - skb_queue_tail(&ifsta->skb_queue, skb); - queue_work(local->hw.workqueue, &ifsta->work); - return; + skb_queue_tail(&sdata->u.mgd.skb_queue, skb); + queue_work(local->hw.workqueue, &sdata->u.mgd.work); + return RX_QUEUED; } - fail: - kfree_skb(skb); + return RX_DROP_MONITOR; } static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) { struct ieee80211_rx_status *rx_status; - struct ieee80211_if_sta *ifsta; struct ieee80211_mgmt *mgmt; u16 fc; - ifsta = &sdata->u.sta; - rx_status = (struct ieee80211_rx_status *) skb->cb; mgmt = (struct ieee80211_mgmt *) skb->data; fc = le16_to_cpu(mgmt->frame_control); switch (fc & IEEE80211_FCTL_STYPE) { - case IEEE80211_STYPE_PROBE_REQ: - ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len, - rx_status); - break; case IEEE80211_STYPE_PROBE_RESP: - ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); + ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, + rx_status); break; case IEEE80211_STYPE_BEACON: - ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); + ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, + rx_status); break; case IEEE80211_STYPE_AUTH: - ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); + ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_ASSOC_RESP: - ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); + ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 0); break; case IEEE80211_STYPE_REASSOC_RESP: - ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); + ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 1); break; case IEEE80211_STYPE_DEAUTH: - ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); + ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_DISASSOC: - ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); + ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); break; } kfree_skb(skb); } - -static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) -{ - struct ieee80211_local *local = sdata->local; - int active = 0; - struct sta_info *sta; - - rcu_read_lock(); - - list_for_each_entry_rcu(sta, &local->sta_list, list) { - if (sta->sdata == sdata && - time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, - jiffies)) { - active++; - break; - } - } - - rcu_read_unlock(); - - return active; -} - - -static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) -{ - mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); - - ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); - if (ieee80211_sta_active_ibss(sdata)) - return; - - printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " - "IBSS networks with same SSID (merge)\n", sdata->dev->name); - ieee80211_request_scan(sdata, ifsta->ssid, ifsta->ssid_len); -} - - static void ieee80211_sta_timer(unsigned long data) { struct ieee80211_sub_if_data *sdata = (struct ieee80211_sub_if_data *) data; - struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; - set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); - queue_work(local->hw.workqueue, &ifsta->work); + set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); + queue_work(local->hw.workqueue, &ifmgd->work); } -static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; if (local->ops->reset_tsf) { @@ -1992,298 +1627,109 @@ static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, local->ops->reset_tsf(local_to_hw(local)); } - ifsta->wmm_last_param_set = -1; /* allow any WMM update */ + ifmgd->wmm_last_param_set = -1; /* allow any WMM update */ - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) - ifsta->auth_alg = WLAN_AUTH_OPEN; - else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) - ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; - else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) - ifsta->auth_alg = WLAN_AUTH_LEAP; + if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) + ifmgd->auth_alg = WLAN_AUTH_OPEN; + else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) + ifmgd->auth_alg = WLAN_AUTH_SHARED_KEY; + else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) + ifmgd->auth_alg = WLAN_AUTH_LEAP; else - ifsta->auth_alg = WLAN_AUTH_OPEN; - ifsta->auth_transaction = -1; - ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; - ifsta->assoc_scan_tries = 0; - ifsta->direct_probe_tries = 0; - ifsta->auth_tries = 0; - ifsta->assoc_tries = 0; + ifmgd->auth_alg = WLAN_AUTH_OPEN; + ifmgd->auth_transaction = -1; + ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; + ifmgd->assoc_scan_tries = 0; + ifmgd->direct_probe_tries = 0; + ifmgd->auth_tries = 0; + ifmgd->assoc_tries = 0; netif_tx_stop_all_queues(sdata->dev); netif_carrier_off(sdata->dev); } - -static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, - const char *ssid, int ssid_len) -{ - int tmp, hidden_ssid; - - if (ssid_len == ifsta->ssid_len && - !memcmp(ifsta->ssid, ssid, ssid_len)) - return 1; - - if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) - return 0; - - hidden_ssid = 1; - tmp = ssid_len; - while (tmp--) { - if (ssid[tmp] != '\0') { - hidden_ssid = 0; - break; - } - } - - if (hidden_ssid && (ifsta->ssid_len == ssid_len || ssid_len == 0)) - return 1; - - if (ssid_len == 1 && ssid[0] == ' ') - return 1; - - return 0; -} - -static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; struct ieee80211_bss *bss; - struct ieee80211_supported_band *sband; - u8 bssid[ETH_ALEN], *pos; - int i; - int ret; - -#if 0 - /* Easier testing, use fixed BSSID. */ - memset(bssid, 0xfe, ETH_ALEN); -#else - /* Generate random, not broadcast, locally administered BSSID. Mix in - * own MAC address to make sure that devices that do not have proper - * random number generator get different BSSID. */ - get_random_bytes(bssid, ETH_ALEN); - for (i = 0; i < ETH_ALEN; i++) - bssid[i] ^= sdata->dev->dev_addr[i]; - bssid[0] &= ~0x01; - bssid[0] |= 0x02; -#endif - - printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", - sdata->dev->name, bssid); - - bss = ieee80211_rx_bss_add(local, bssid, - local->hw.conf.channel->center_freq, - sdata->u.sta.ssid, sdata->u.sta.ssid_len); - if (!bss) - return -ENOMEM; - - bss->band = local->hw.conf.channel->band; - sband = local->hw.wiphy->bands[bss->band]; - - if (local->hw.conf.beacon_int == 0) - local->hw.conf.beacon_int = 100; - bss->beacon_int = local->hw.conf.beacon_int; - bss->last_update = jiffies; - bss->capability = WLAN_CAPABILITY_IBSS; + u8 *bssid = ifmgd->bssid, *ssid = ifmgd->ssid; + u8 ssid_len = ifmgd->ssid_len; + u16 capa_mask = WLAN_CAPABILITY_ESS; + u16 capa_val = WLAN_CAPABILITY_ESS; + struct ieee80211_channel *chan = local->oper_channel; - if (sdata->default_key) - bss->capability |= WLAN_CAPABILITY_PRIVACY; - else - sdata->drop_unencrypted = 0; - - bss->supp_rates_len = sband->n_bitrates; - pos = bss->supp_rates; - for (i = 0; i < sband->n_bitrates; i++) { - int rate = sband->bitrates[i].bitrate; - *pos++ = (u8) (rate / 5); + if (ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL | + IEEE80211_STA_AUTO_BSSID_SEL | + IEEE80211_STA_AUTO_CHANNEL_SEL)) { + capa_mask |= WLAN_CAPABILITY_PRIVACY; + if (sdata->default_key) + capa_val |= WLAN_CAPABILITY_PRIVACY; } - ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); - ieee80211_rx_bss_put(local, bss); - return ret; -} - + if (ifmgd->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) + chan = NULL; -static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = sdata->local; - struct ieee80211_bss *bss; - int found = 0; - u8 bssid[ETH_ALEN]; - int active_ibss; + if (ifmgd->flags & IEEE80211_STA_AUTO_BSSID_SEL) + bssid = NULL; - if (ifsta->ssid_len == 0) - return -EINVAL; - - active_ibss = ieee80211_sta_active_ibss(sdata); -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", - sdata->dev->name, active_ibss); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ - spin_lock_bh(&local->bss_lock); - list_for_each_entry(bss, &local->bss_list, list) { - if (ifsta->ssid_len != bss->ssid_len || - memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 - || !(bss->capability & WLAN_CAPABILITY_IBSS)) - continue; -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG " bssid=%pM found\n", bss->bssid); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ - memcpy(bssid, bss->bssid, ETH_ALEN); - found = 1; - if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) - break; + if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) { + ssid = NULL; + ssid_len = 0; } - spin_unlock_bh(&local->bss_lock); -#ifdef CONFIG_MAC80211_IBSS_DEBUG - if (found) - printk(KERN_DEBUG " sta_find_ibss: selected %pM current " - "%pM\n", bssid, ifsta->bssid); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ + bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, + bssid, ssid, ssid_len, + capa_mask, capa_val); - if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { - int ret; - int search_freq; - - if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) - search_freq = bss->freq; + if (bss) { + ieee80211_set_freq(sdata, bss->cbss.channel->center_freq); + if (!(ifmgd->flags & IEEE80211_STA_SSID_SET)) + ieee80211_sta_set_ssid(sdata, bss->ssid, + bss->ssid_len); + ieee80211_sta_set_bssid(sdata, bss->cbss.bssid); + ieee80211_sta_def_wmm_params(sdata, bss->supp_rates_len, + bss->supp_rates); + if (sdata->u.mgd.mfp == IEEE80211_MFP_REQUIRED) + sdata->u.mgd.flags |= IEEE80211_STA_MFP_ENABLED; else - search_freq = local->hw.conf.channel->center_freq; - - bss = ieee80211_rx_bss_get(local, bssid, search_freq, - ifsta->ssid, ifsta->ssid_len); - if (!bss) - goto dont_join; - - printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" - " based on configured SSID\n", - sdata->dev->name, bssid); - ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); - ieee80211_rx_bss_put(local, bss); - return ret; - } - -dont_join: -#ifdef CONFIG_MAC80211_IBSS_DEBUG - printk(KERN_DEBUG " did not try to join ibss\n"); -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ - - /* Selected IBSS not found in current scan results - try to scan */ - if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && - !ieee80211_sta_active_ibss(sdata)) { - mod_timer(&ifsta->timer, jiffies + - IEEE80211_IBSS_MERGE_INTERVAL); - } else if (time_after(jiffies, local->last_scan_completed + - IEEE80211_SCAN_INTERVAL)) { - printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " - "join\n", sdata->dev->name); - return ieee80211_request_scan(sdata, ifsta->ssid, - ifsta->ssid_len); - } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { - int interval = IEEE80211_SCAN_INTERVAL; - - if (time_after(jiffies, ifsta->ibss_join_req + - IEEE80211_IBSS_JOIN_TIMEOUT)) { - if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && - (!(local->oper_channel->flags & - IEEE80211_CHAN_NO_IBSS))) - return ieee80211_sta_create_ibss(sdata, ifsta); - if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { - printk(KERN_DEBUG "%s: IBSS not allowed on" - " %d MHz\n", sdata->dev->name, - local->hw.conf.channel->center_freq); - } - - /* No IBSS found - decrease scan interval and continue - * scanning. */ - interval = IEEE80211_SCAN_INTERVAL_SLOW; - } - - ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; - mod_timer(&ifsta->timer, jiffies + interval); - return 0; - } - - return 0; -} - - -static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = sdata->local; - struct ieee80211_bss *bss, *selected = NULL; - int top_rssi = 0, freq; - - spin_lock_bh(&local->bss_lock); - freq = local->oper_channel->center_freq; - list_for_each_entry(bss, &local->bss_list, list) { - if (!(bss->capability & WLAN_CAPABILITY_ESS)) - continue; - - if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | - IEEE80211_STA_AUTO_BSSID_SEL | - IEEE80211_STA_AUTO_CHANNEL_SEL)) && - (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ - !!sdata->default_key)) - continue; - - if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && - bss->freq != freq) - continue; - - if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && - memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) - continue; - - if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && - !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) - continue; - - if (!selected || top_rssi < bss->signal) { - selected = bss; - top_rssi = bss->signal; - } - } - if (selected) - atomic_inc(&selected->users); - spin_unlock_bh(&local->bss_lock); - - if (selected) { - ieee80211_set_freq(sdata, selected->freq); - if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) - ieee80211_sta_set_ssid(sdata, selected->ssid, - selected->ssid_len); - ieee80211_sta_set_bssid(sdata, selected->bssid); - ieee80211_sta_def_wmm_params(sdata, selected); + sdata->u.mgd.flags &= ~IEEE80211_STA_MFP_ENABLED; /* Send out direct probe if no probe resp was received or * the one we have is outdated */ - if (!selected->last_probe_resp || - time_after(jiffies, selected->last_probe_resp + if (!bss->last_probe_resp || + time_after(jiffies, bss->last_probe_resp + IEEE80211_SCAN_RESULT_EXPIRE)) - ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; + ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; else - ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; + ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; - ieee80211_rx_bss_put(local, selected); - ieee80211_sta_reset_auth(sdata, ifsta); + ieee80211_rx_bss_put(local, bss); + ieee80211_sta_reset_auth(sdata); return 0; } else { - if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { - ifsta->assoc_scan_tries++; - if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) - ieee80211_start_scan(sdata, NULL, 0); + if (ifmgd->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { + ifmgd->assoc_scan_tries++; + /* XXX maybe racy? */ + if (local->scan_req) + return -1; + memcpy(local->int_scan_req.ssids[0].ssid, + ifmgd->ssid, IEEE80211_MAX_SSID_LEN); + if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) + local->int_scan_req.ssids[0].ssid_len = 0; else - ieee80211_start_scan(sdata, ifsta->ssid, - ifsta->ssid_len); - ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; - set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); - } else - ifsta->state = IEEE80211_STA_MLME_DISABLED; + local->int_scan_req.ssids[0].ssid_len = ifmgd->ssid_len; + + if (ieee80211_start_scan(sdata, &local->int_scan_req)) + ieee80211_scan_failed(local); + + ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; + set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); + } else { + ifmgd->assoc_scan_tries = 0; + ifmgd->state = IEEE80211_STA_MLME_DISABLED; + } } return -1; } @@ -2292,9 +1738,9 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, static void ieee80211_sta_work(struct work_struct *work) { struct ieee80211_sub_if_data *sdata = - container_of(work, struct ieee80211_sub_if_data, u.sta.work); + container_of(work, struct ieee80211_sub_if_data, u.mgd.work); struct ieee80211_local *local = sdata->local; - struct ieee80211_if_sta *ifsta; + struct ieee80211_if_managed *ifmgd; struct sk_buff *skb; if (!netif_running(sdata->dev)) @@ -2303,61 +1749,60 @@ static void ieee80211_sta_work(struct work_struct *work) if (local->sw_scanning || local->hw_scanning) return; - if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION && - sdata->vif.type != NL80211_IFTYPE_ADHOC)) + if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) return; - ifsta = &sdata->u.sta; + ifmgd = &sdata->u.mgd; - while ((skb = skb_dequeue(&ifsta->skb_queue))) + while ((skb = skb_dequeue(&ifmgd->skb_queue))) ieee80211_sta_rx_queued_mgmt(sdata, skb); - if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && - ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && - ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && - test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { - ieee80211_start_scan(sdata, ifsta->scan_ssid, - ifsta->scan_ssid_len); + if (ifmgd->state != IEEE80211_STA_MLME_DIRECT_PROBE && + ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE && + ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE && + test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request)) { + /* + * The call to ieee80211_start_scan can fail but ieee80211_request_scan + * (which queued ieee80211_sta_work) did not return an error. Thus, call + * ieee80211_scan_failed here if ieee80211_start_scan fails in order to + * notify the scan requester. + */ + if (ieee80211_start_scan(sdata, local->scan_req)) + ieee80211_scan_failed(local); return; } - if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { - if (ieee80211_sta_config_auth(sdata, ifsta)) + if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request)) { + if (ieee80211_sta_config_auth(sdata)) return; - clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); - } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) + clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); + } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request)) return; - switch (ifsta->state) { + switch (ifmgd->state) { case IEEE80211_STA_MLME_DISABLED: break; case IEEE80211_STA_MLME_DIRECT_PROBE: - ieee80211_direct_probe(sdata, ifsta); + ieee80211_direct_probe(sdata); break; case IEEE80211_STA_MLME_AUTHENTICATE: - ieee80211_authenticate(sdata, ifsta); + ieee80211_authenticate(sdata); break; case IEEE80211_STA_MLME_ASSOCIATE: - ieee80211_associate(sdata, ifsta); + ieee80211_associate(sdata); break; case IEEE80211_STA_MLME_ASSOCIATED: - ieee80211_associated(sdata, ifsta); - break; - case IEEE80211_STA_MLME_IBSS_SEARCH: - ieee80211_sta_find_ibss(sdata, ifsta); - break; - case IEEE80211_STA_MLME_IBSS_JOINED: - ieee80211_sta_merge_ibss(sdata, ifsta); + ieee80211_associated(sdata); break; default: WARN_ON(1); break; } - if (ieee80211_privacy_mismatch(sdata, ifsta)) { + if (ieee80211_privacy_mismatch(sdata)) { printk(KERN_DEBUG "%s: privacy configuration mismatch and " "mixed-cell disabled - disassociate\n", sdata->dev->name); - ieee80211_set_disassoc(sdata, ifsta, false, true, + ieee80211_set_disassoc(sdata, false, true, WLAN_REASON_UNSPECIFIED); } } @@ -2366,208 +1811,153 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) { if (sdata->vif.type == NL80211_IFTYPE_STATION) queue_work(sdata->local->hw.workqueue, - &sdata->u.sta.work); + &sdata->u.mgd.work); } /* interface setup */ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) { - struct ieee80211_if_sta *ifsta; + struct ieee80211_if_managed *ifmgd; - ifsta = &sdata->u.sta; - INIT_WORK(&ifsta->work, ieee80211_sta_work); - setup_timer(&ifsta->timer, ieee80211_sta_timer, + ifmgd = &sdata->u.mgd; + INIT_WORK(&ifmgd->work, ieee80211_sta_work); + INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); + setup_timer(&ifmgd->timer, ieee80211_sta_timer, + (unsigned long) sdata); + setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, (unsigned long) sdata); - skb_queue_head_init(&ifsta->skb_queue); + skb_queue_head_init(&ifmgd->skb_queue); - ifsta->capab = WLAN_CAPABILITY_ESS; - ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN | + ifmgd->capab = WLAN_CAPABILITY_ESS; + ifmgd->auth_algs = IEEE80211_AUTH_ALG_OPEN | IEEE80211_AUTH_ALG_SHARED_KEY; - ifsta->flags |= IEEE80211_STA_CREATE_IBSS | + ifmgd->flags |= IEEE80211_STA_CREATE_IBSS | IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL; if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4) - ifsta->flags |= IEEE80211_STA_WMM_ENABLED; -} - -/* - * Add a new IBSS station, will also be called by the RX code when, - * in IBSS mode, receiving a frame from a yet-unknown station, hence - * must be callable in atomic context. - */ -struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, - u8 *bssid,u8 *addr, u64 supp_rates) -{ - struct ieee80211_local *local = sdata->local; - struct sta_info *sta; - int band = local->hw.conf.channel->band; - - /* TODO: Could consider removing the least recently used entry and - * allow new one to be added. */ - if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: No room for a new IBSS STA " - "entry %pM\n", sdata->dev->name, addr); - } - return NULL; - } - - if (compare_ether_addr(bssid, sdata->u.sta.bssid)) - return NULL; - -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG - printk(KERN_DEBUG "%s: Adding new IBSS station %pM (dev=%s)\n", - wiphy_name(local->hw.wiphy), addr, sdata->dev->name); -#endif - - sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); - if (!sta) - return NULL; - - set_sta_flags(sta, WLAN_STA_AUTHORIZED); - - /* make sure mandatory rates are always added */ - sta->sta.supp_rates[band] = supp_rates | - ieee80211_mandatory_rates(local, band); - - rate_control_rate_init(sta); - - if (sta_info_insert(sta)) - return NULL; - - return sta; + ifmgd->flags |= IEEE80211_STA_WMM_ENABLED; } /* configuration hooks */ -void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_if_sta *ifsta) +void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; - if (sdata->vif.type != NL80211_IFTYPE_STATION) + if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) return; - if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | + if ((ifmgd->flags & (IEEE80211_STA_BSSID_SET | IEEE80211_STA_AUTO_BSSID_SEL)) && - (ifsta->flags & (IEEE80211_STA_SSID_SET | + (ifmgd->flags & (IEEE80211_STA_SSID_SET | IEEE80211_STA_AUTO_SSID_SEL))) { - if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) - ieee80211_set_disassoc(sdata, ifsta, true, true, + if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) + ieee80211_set_disassoc(sdata, true, true, WLAN_REASON_DEAUTH_LEAVING); - set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); - queue_work(local->hw.workqueue, &ifsta->work); + set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); + queue_work(local->hw.workqueue, &ifmgd->work); } } +int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; + + if (ifmgd->ssid_len) + ifmgd->flags |= IEEE80211_STA_SSID_SET; + else + ifmgd->flags &= ~IEEE80211_STA_SSID_SET; + + return 0; +} + int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) { - struct ieee80211_if_sta *ifsta; + struct ieee80211_if_managed *ifmgd; if (len > IEEE80211_MAX_SSID_LEN) return -EINVAL; - ifsta = &sdata->u.sta; - - if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { - memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); - memcpy(ifsta->ssid, ssid, len); - ifsta->ssid_len = len; - ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; - } - - if (len) - ifsta->flags |= IEEE80211_STA_SSID_SET; - else - ifsta->flags &= ~IEEE80211_STA_SSID_SET; + ifmgd = &sdata->u.mgd; - if (sdata->vif.type == NL80211_IFTYPE_ADHOC && - !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { - ifsta->ibss_join_req = jiffies; - ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; - return ieee80211_sta_find_ibss(sdata, ifsta); + if (ifmgd->ssid_len != len || memcmp(ifmgd->ssid, ssid, len) != 0) { + memset(ifmgd->ssid, 0, sizeof(ifmgd->ssid)); + memcpy(ifmgd->ssid, ssid, len); + ifmgd->ssid_len = len; } - return 0; + return ieee80211_sta_commit(sdata); } int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) { - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - memcpy(ssid, ifsta->ssid, ifsta->ssid_len); - *len = ifsta->ssid_len; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + memcpy(ssid, ifmgd->ssid, ifmgd->ssid_len); + *len = ifmgd->ssid_len; return 0; } int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) { - struct ieee80211_if_sta *ifsta; - int res; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - ifsta = &sdata->u.sta; + if (is_valid_ether_addr(bssid)) { + memcpy(ifmgd->bssid, bssid, ETH_ALEN); + ifmgd->flags |= IEEE80211_STA_BSSID_SET; + } else { + memset(ifmgd->bssid, 0, ETH_ALEN); + ifmgd->flags &= ~IEEE80211_STA_BSSID_SET; + } - if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { - memcpy(ifsta->bssid, bssid, ETH_ALEN); - res = 0; - /* - * Hack! See also ieee80211_sta_set_ssid. - */ - if (netif_running(sdata->dev)) - res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); - if (res) { + if (netif_running(sdata->dev)) { + if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) { printk(KERN_DEBUG "%s: Failed to config new BSSID to " "the low-level driver\n", sdata->dev->name); - return res; } } - if (is_valid_ether_addr(bssid)) - ifsta->flags |= IEEE80211_STA_BSSID_SET; - else - ifsta->flags &= ~IEEE80211_STA_BSSID_SET; - - return 0; + return ieee80211_sta_commit(sdata); } int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) { - struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - kfree(ifsta->extra_ie); + kfree(ifmgd->extra_ie); if (len == 0) { - ifsta->extra_ie = NULL; - ifsta->extra_ie_len = 0; + ifmgd->extra_ie = NULL; + ifmgd->extra_ie_len = 0; return 0; } - ifsta->extra_ie = kmalloc(len, GFP_KERNEL); - if (!ifsta->extra_ie) { - ifsta->extra_ie_len = 0; + ifmgd->extra_ie = kmalloc(len, GFP_KERNEL); + if (!ifmgd->extra_ie) { + ifmgd->extra_ie_len = 0; return -ENOMEM; } - memcpy(ifsta->extra_ie, ie, len); - ifsta->extra_ie_len = len; + memcpy(ifmgd->extra_ie, ie, len); + ifmgd->extra_ie_len = len; return 0; } int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) { - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", sdata->dev->name, reason); - if (sdata->vif.type != NL80211_IFTYPE_STATION && - sdata->vif.type != NL80211_IFTYPE_ADHOC) + if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EINVAL; - ieee80211_set_disassoc(sdata, ifsta, true, true, reason); + ieee80211_set_disassoc(sdata, true, true, reason); return 0; } int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) { - struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", sdata->dev->name, reason); @@ -2575,10 +1965,10 @@ int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EINVAL; - if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) - return -1; + if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED)) + return -ENOLINK; - ieee80211_set_disassoc(sdata, ifsta, false, true, reason); + ieee80211_set_disassoc(sdata, false, true, reason); return 0; } @@ -2586,15 +1976,6 @@ int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata = local->scan_sdata; - struct ieee80211_if_sta *ifsta; - - if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) { - ifsta = &sdata->u.sta; - if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || - (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) && - !ieee80211_sta_active_ibss(sdata))) - ieee80211_sta_find_ibss(sdata, ifsta); - } /* Restart STA timers */ rcu_read_lock(); @@ -2623,12 +2004,15 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work) struct ieee80211_local *local = container_of(work, struct ieee80211_local, dynamic_ps_enable_work); + struct ieee80211_sub_if_data *sdata = local->scan_sdata; if (local->hw.conf.flags & IEEE80211_CONF_PS) return; - local->hw.conf.flags |= IEEE80211_CONF_PS; + if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) + ieee80211_send_nullfunc(local, sdata, 1); + local->hw.conf.flags |= IEEE80211_CONF_PS; ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); } @@ -2638,3 +2022,36 @@ void ieee80211_dynamic_ps_timer(unsigned long data) queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); } + +void ieee80211_send_nullfunc(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + int powersave) +{ + struct sk_buff *skb; + struct ieee80211_hdr *nullfunc; + __le16 fc; + + if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) + return; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " + "frame\n", sdata->dev->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); + memset(nullfunc, 0, 24); + fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | + IEEE80211_FCTL_TODS); + if (powersave) + fc |= cpu_to_le16(IEEE80211_FCTL_PM); + nullfunc->frame_control = fc; + memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); + memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); + memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); + + ieee80211_tx_skb(sdata, skb, 0); +} |