This way all the utility functions are at the top, then the
state machine and externally callable functions are moved to
the bottom. Also clean up ieee80211_i.h a bit and add a few
comments about which functions are called from where.
Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
net/mac80211/ieee80211_i.h | 39 +-
net/mac80211/iface.c | 17 -
net/mac80211/mlme.c | 702 +++++++++++++++++++++++----------------------
3 files changed, 385 insertions(+), 373 deletions(-)
--- everything.orig/net/mac80211/ieee80211_i.h 2008-09-10 23:57:55.000000000 +0200
+++ everything/net/mac80211/ieee80211_i.h 2008-09-10 23:57:59.000000000 +0200
@@ -882,54 +882,53 @@ static inline int ieee80211_bssid_match(
}
-/* ieee80211.c */
int ieee80211_hw_config(struct ieee80211_local *local);
int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
struct ieee80211_ht_info *req_ht_cap,
struct ieee80211_ht_bss_info *req_bss_cap);
+void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+ u32 changed);
-/* ieee80211_ioctl.c */
+/* wireless extensions */
extern const struct iw_handler_def ieee80211_iw_handler_def;
int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
-/* ieee80211_sta.c */
-void ieee80211_sta_timer(unsigned long data);
-void ieee80211_sta_work(struct work_struct *work);
+/* STA/IBSS code */
+void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_scan_work(struct work_struct *work);
void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
-int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len);
void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta);
-int ieee80211_sta_scan_results(struct ieee80211_local *local,
- struct iw_request_info *info,
- char *buf, size_t len);
-ieee80211_rx_result ieee80211_sta_rx_scan(
- struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status);
-void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
-void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
-int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates);
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
-void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
- u32 changed);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len);
-void ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems);
+
+/* scan/BSS handling */
+int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len);
+int ieee80211_sta_scan_results(struct ieee80211_local *local,
+ struct iw_request_info *info,
+ char *buf, size_t len);
+ieee80211_rx_result ieee80211_sta_rx_scan(
+ struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status);
+void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
+void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
+int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len);
+
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
u8 *ssid, size_t ssid_len);
@@ -1007,6 +1006,8 @@ void mac80211_ev_michael_mic_failure(str
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
int encrypt);
+void ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
--- everything.orig/net/mac80211/iface.c 2008-09-10 23:57:55.000000000 +0200
+++ everything/net/mac80211/iface.c 2008-09-10 23:57:59.000000000 +0200
@@ -83,8 +83,6 @@ static void ieee80211_teardown_sdata(str
static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
enum ieee80211_if_types type)
{
- struct ieee80211_if_sta *ifsta;
-
/* clear type-dependent union */
memset(&sdata->u, 0, sizeof(sdata->u));
@@ -101,20 +99,7 @@ static void ieee80211_setup_sdata(struct
break;
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
- ifsta = &sdata->u.sta;
- INIT_WORK(&ifsta->work, ieee80211_sta_work);
- setup_timer(&ifsta->timer, ieee80211_sta_timer,
- (unsigned long) sdata);
- skb_queue_head_init(&ifsta->skb_queue);
-
- ifsta->capab = WLAN_CAPABILITY_ESS;
- ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
- IEEE80211_AUTH_ALG_SHARED_KEY;
- ifsta->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;
+ ieee80211_sta_setup_sdata(sdata);
break;
case IEEE80211_IF_TYPE_MESH_POINT:
if (ieee80211_vif_is_mesh(&sdata->vif))
--- everything.orig/net/mac80211/mlme.c 2008-09-10 23:57:58.000000000 +0200
+++ everything/net/mac80211/mlme.c 2008-09-10 23:57:59.000000000 +0200
@@ -93,44 +93,46 @@ static int ieee80211_compatible_rates(st
return count;
}
-/* frame sending functions */
-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)
+/* 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_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
+ 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];
- 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;
+ if (!sband) {
+ WARN_ON(1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
}
- 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);
+ 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)
{
@@ -191,6 +193,43 @@ void ieee80211_send_probe_req(struct iee
ieee80211_tx_skb(sdata, skb, 0);
}
+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)
+{
+ 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)
{
@@ -1445,42 +1484,6 @@ static int ieee80211_sta_join_ibss(struc
return res;
}
-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;
-}
-
static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local,
enum ieee80211_band band)
{
@@ -1925,7 +1928,7 @@ static void ieee80211_sta_merge_ibss(str
}
-void ieee80211_sta_timer(unsigned long data)
+static void ieee80211_sta_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
(struct ieee80211_sub_if_data *) data;
@@ -1968,28 +1971,6 @@ static void ieee80211_sta_reset_auth(str
}
-void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = sdata->local;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
-
- if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
- IEEE80211_STA_AUTO_BSSID_SEL)) &&
- (ifsta->flags & (IEEE80211_STA_SSID_SET |
- IEEE80211_STA_AUTO_SSID_SEL))) {
-
- if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED)
- ieee80211_set_disassoc(sdata, ifsta, true, true,
- WLAN_REASON_DEAUTH_LEAVING);
-
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
- }
-}
-
static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
const char *ssid, int ssid_len)
{
@@ -2191,113 +2172,190 @@ dont_join:
}
-int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
+static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta)
{
- struct ieee80211_if_sta *ifsta;
- int res;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_sta_bss *bss, *selected = NULL;
+ int top_rssi = 0, freq;
- if (len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
+ spin_lock_bh(&local->sta_bss_lock);
+ freq = local->oper_channel->center_freq;
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (!(bss->capability & WLAN_CAPABILITY_ESS))
+ continue;
- ifsta = &sdata->u.sta;
+ 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->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 (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
+ bss->freq != freq)
+ continue;
- res = 0;
- /*
- * Hack! MLME code needs to be cleaned up to have different
- * entry points for configuration and internal selection change
- */
- if (netif_running(sdata->dev))
- res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
- if (res) {
- printk(KERN_DEBUG "%s: Failed to config new SSID to "
- "the low-level driver\n", sdata->dev->name);
- return res;
- }
- }
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
+ memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
+ continue;
- if (len)
- ifsta->flags |= IEEE80211_STA_SSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_SSID_SET;
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
+ !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
+ continue;
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
- !(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 (!selected || top_rssi < bss->signal) {
+ selected = bss;
+ top_rssi = bss->signal;
+ }
}
+ if (selected)
+ atomic_inc(&selected->users);
+ spin_unlock_bh(&local->sta_bss_lock);
- return 0;
-}
-
-
-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;
- return 0;
-}
-
+ 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);
-int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
-{
- struct ieee80211_if_sta *ifsta;
- int res;
+ /* 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
+ + IEEE80211_SCAN_RESULT_EXPIRE))
+ ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
+ else
+ ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
- ifsta = &sdata->u.sta;
-
- 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) {
- printk(KERN_DEBUG "%s: Failed to config new BSSID to "
- "the low-level driver\n", sdata->dev->name);
- return res;
- }
+ ieee80211_rx_bss_put(local, selected);
+ ieee80211_sta_reset_auth(sdata, ifsta);
+ 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_sta_start_scan(sdata, NULL, 0);
+ else
+ ieee80211_sta_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;
}
-
- if (is_valid_ether_addr(bssid))
- ifsta->flags |= IEEE80211_STA_BSSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
-
- return 0;
+ return -1;
}
-int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
+static void ieee80211_sta_work(struct work_struct *work)
{
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data, u.sta.work);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_sta *ifsta;
+ struct sk_buff *skb;
- kfree(ifsta->extra_ie);
- if (len == 0) {
- ifsta->extra_ie = NULL;
- ifsta->extra_ie_len = 0;
- return 0;
+ if (!netif_running(sdata->dev))
+ return;
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return;
+
+ if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS))
+ return;
+ ifsta = &sdata->u.sta;
+
+ while ((skb = skb_dequeue(&ifsta->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_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len);
+ return;
}
- ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
- if (!ifsta->extra_ie) {
- ifsta->extra_ie_len = 0;
- return -ENOMEM;
+
+ if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
+ if (ieee80211_sta_config_auth(sdata, ifsta))
+ return;
+ clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+ } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
+ return;
+
+ switch (ifsta->state) {
+ case IEEE80211_STA_MLME_DISABLED:
+ break;
+ case IEEE80211_STA_MLME_DIRECT_PROBE:
+ ieee80211_direct_probe(sdata, ifsta);
+ break;
+ case IEEE80211_STA_MLME_AUTHENTICATE:
+ ieee80211_authenticate(sdata, ifsta);
+ break;
+ case IEEE80211_STA_MLME_ASSOCIATE:
+ ieee80211_associate(sdata, ifsta);
+ 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);
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+
+ if (ieee80211_privacy_mismatch(sdata, ifsta)) {
+ printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+ "mixed-cell disabled - disassociate\n", sdata->dev->name);
+
+ ieee80211_set_disassoc(sdata, ifsta, false, true,
+ WLAN_REASON_UNSPECIFIED);
}
- memcpy(ifsta->extra_ie, ie, len);
- ifsta->extra_ie_len = len;
- return 0;
}
+static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
+ queue_work(sdata->local->hw.workqueue,
+ &sdata->u.sta.work);
+}
+/* interface setup */
+void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_sta *ifsta;
+
+ ifsta = &sdata->u.sta;
+ INIT_WORK(&ifsta->work, ieee80211_sta_work);
+ setup_timer(&ifsta->timer, ieee80211_sta_timer,
+ (unsigned long) sdata);
+ skb_queue_head_init(&ifsta->skb_queue);
+
+ ifsta->capab = WLAN_CAPABILITY_ESS;
+ ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+ IEEE80211_AUTH_ALG_SHARED_KEY;
+ ifsta->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,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates)
@@ -2343,86 +2401,132 @@ struct sta_info *ieee80211_ibss_add_sta(
return sta;
}
-
-static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+/* configuration hooks */
+void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta)
{
struct ieee80211_local *local = sdata->local;
- struct ieee80211_sta_bss *bss, *selected = NULL;
- int top_rssi = 0, freq;
- spin_lock_bh(&local->sta_bss_lock);
- freq = local->oper_channel->center_freq;
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (!(bss->capability & WLAN_CAPABILITY_ESS))
- continue;
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
- 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_BSSID_SET |
+ IEEE80211_STA_AUTO_BSSID_SEL)) &&
+ (ifsta->flags & (IEEE80211_STA_SSID_SET |
+ IEEE80211_STA_AUTO_SSID_SEL))) {
- if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
- bss->freq != freq)
- continue;
+ if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED)
+ ieee80211_set_disassoc(sdata, ifsta, true, true,
+ WLAN_REASON_DEAUTH_LEAVING);
- if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
- memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
- continue;
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ }
+}
- if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
- !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
- continue;
+int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
+{
+ struct ieee80211_if_sta *ifsta;
+ int res;
- if (!selected || top_rssi < bss->signal) {
- selected = bss;
- top_rssi = bss->signal;
+ 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;
+
+ res = 0;
+ /*
+ * Hack! MLME code needs to be cleaned up to have different
+ * entry points for configuration and internal selection change
+ */
+ if (netif_running(sdata->dev))
+ res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
+ if (res) {
+ printk(KERN_DEBUG "%s: Failed to config new SSID to "
+ "the low-level driver\n", sdata->dev->name);
+ return res;
}
}
- if (selected)
- atomic_inc(&selected->users);
- spin_unlock_bh(&local->sta_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);
+ if (len)
+ ifsta->flags |= IEEE80211_STA_SSID_SET;
+ else
+ ifsta->flags &= ~IEEE80211_STA_SSID_SET;
- /* Send out direct probe if no probe resp was received or
- * the one we have is outdated
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ !(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);
+ }
+
+ return 0;
+}
+
+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;
+ return 0;
+}
+
+int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
+{
+ struct ieee80211_if_sta *ifsta;
+ int res;
+
+ ifsta = &sdata->u.sta;
+
+ if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
+ memcpy(ifsta->bssid, bssid, ETH_ALEN);
+ res = 0;
+ /*
+ * Hack! See also ieee80211_sta_set_ssid.
*/
- if (!selected->last_probe_resp ||
- time_after(jiffies, selected->last_probe_resp
- + IEEE80211_SCAN_RESULT_EXPIRE))
- ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
- else
- ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
+ if (netif_running(sdata->dev))
+ res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
+ if (res) {
+ printk(KERN_DEBUG "%s: Failed to config new BSSID to "
+ "the low-level driver\n", sdata->dev->name);
+ return res;
+ }
+ }
- ieee80211_rx_bss_put(local, selected);
- ieee80211_sta_reset_auth(sdata, ifsta);
+ if (is_valid_ether_addr(bssid))
+ ifsta->flags |= IEEE80211_STA_BSSID_SET;
+ else
+ ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
+
+ return 0;
+}
+
+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;
+
+ kfree(ifsta->extra_ie);
+ if (len == 0) {
+ ifsta->extra_ie = NULL;
+ ifsta->extra_ie_len = 0;
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_sta_start_scan(sdata, NULL, 0);
- else
- ieee80211_sta_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;
}
- return -1;
+ ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
+ if (!ifsta->extra_ie) {
+ ifsta->extra_ie_len = 0;
+ return -ENOMEM;
+ }
+ memcpy(ifsta->extra_ie, ie, len);
+ ifsta->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;
@@ -2438,7 +2542,6 @@ int ieee80211_sta_deauthenticate(struct
return 0;
}
-
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
@@ -2456,6 +2559,28 @@ int ieee80211_sta_disassociate(struct ie
return 0;
}
+/* scan finished notification */
+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 == IEEE80211_IF_TYPE_IBSS) {
+ 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();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ ieee80211_restart_sta_timer(sdata);
+ rcu_read_unlock();
+}
+
+/* driver notification call */
void ieee80211_notify_mac(struct ieee80211_hw *hw,
enum ieee80211_notification_types notif_type)
{
@@ -2476,102 +2601,3 @@ void ieee80211_notify_mac(struct ieee802
}
}
EXPORT_SYMBOL(ieee80211_notify_mac);
-
-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);
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_sta *ifsta;
- struct sk_buff *skb;
-
- if (!netif_running(sdata->dev))
- return;
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- return;
-
- if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS))
- return;
- ifsta = &sdata->u.sta;
-
- while ((skb = skb_dequeue(&ifsta->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_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len);
- return;
- }
-
- if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
- if (ieee80211_sta_config_auth(sdata, ifsta))
- return;
- clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
- return;
-
- switch (ifsta->state) {
- case IEEE80211_STA_MLME_DISABLED:
- break;
- case IEEE80211_STA_MLME_DIRECT_PROBE:
- ieee80211_direct_probe(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_AUTHENTICATE:
- ieee80211_authenticate(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_ASSOCIATE:
- ieee80211_associate(sdata, ifsta);
- 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);
- break;
- default:
- WARN_ON(1);
- break;
- }
-
- if (ieee80211_privacy_mismatch(sdata, ifsta)) {
- printk(KERN_DEBUG "%s: privacy configuration mismatch and "
- "mixed-cell disabled - disassociate\n", sdata->dev->name);
-
- ieee80211_set_disassoc(sdata, ifsta, false, true,
- WLAN_REASON_UNSPECIFIED);
- }
-}
-
-static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
-{
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
- queue_work(sdata->local->hw.workqueue,
- &sdata->u.sta.work);
-}
-
-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 == IEEE80211_IF_TYPE_IBSS) {
- 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();
- list_for_each_entry_rcu(sdata, &local->interfaces, list)
- ieee80211_restart_sta_timer(sdata);
- rcu_read_unlock();
-}
--
--
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