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mac80211: allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR 

Allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR with software
based scanning and generate a random MAC address for them for every
scan request with the flag.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2014-06-12 22:24:31 +02:00
parent 6ea0a69ca2
commit a344d6778a
24 changed files with 166 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/ath/ath5k/mac80211-ops.c
View File

@ -547,7 +547,9 @@ ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
static void
ath5k_sw_scan_start(struct ieee80211_hw *hw)
ath5k_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct ath5k_hw *ah = hw->priv;
if (!ah->assoc)
@ -556,7 +558,7 @@ ath5k_sw_scan_start(struct ieee80211_hw *hw)
static void
ath5k_sw_scan_complete(struct ieee80211_hw *hw)
ath5k_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct ath5k_hw *ah = hw->priv;
ath5k_hw_set_ledstate(ah, ah->assoc ?

2
drivers/net/wireless/ath/ath9k/channel.c
View File

@ -963,7 +963,7 @@ static void ath_scan_send_probe(struct ath_softc *sc,
struct ieee80211_tx_info *info;
int band = sc->offchannel.chan.chandef.chan->band;
skb = ieee80211_probereq_get(sc->hw, vif,
skb = ieee80211_probereq_get(sc->hw, vif->addr,
ssid->ssid, ssid->ssid_len, req->ie_len);
if (!skb)
return;

7
drivers/net/wireless/ath/ath9k/htc_drv_main.c
View File

@ -1691,7 +1691,9 @@ static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
return ret;
}
static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
@ -1705,7 +1707,8 @@ static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
mutex_unlock(&priv->mutex);
}
static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);

7
drivers/net/wireless/ath/ath9k/main.c
View File

@ -2180,14 +2180,17 @@ static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
return 0;
}
static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
static void ath9k_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
set_bit(ATH_OP_SCANNING, &common->op_flags);
}
static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
static void ath9k_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);

7
drivers/net/wireless/ath/wcn36xx/main.c
View File

@ -494,7 +494,9 @@ out:
return ret;
}
static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw)
static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct wcn36xx *wcn = hw->priv;
@ -502,7 +504,8 @@ static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw)
wcn36xx_smd_start_scan(wcn);
}
static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw)
static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wcn36xx *wcn = hw->priv;

7
drivers/net/wireless/b43/main.c
View File

@ -5110,7 +5110,9 @@ static void b43_op_sta_notify(struct ieee80211_hw *hw,
B43_WARN_ON(!vif || wl->vif != vif);
}
static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
@ -5124,7 +5126,8 @@ static void b43_op_sw_scan_start_notifier(struct ieee80211_hw *hw)
mutex_unlock(&wl->mutex);
}
static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw)
static void b43_op_sw_scan_complete_notifier(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;

7
drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
View File

@ -764,7 +764,9 @@ brcms_ops_configure_filter(struct ieee80211_hw *hw,
return;
}
static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct brcms_info *wl = hw->priv;
spin_lock_bh(&wl->lock);
@ -773,7 +775,8 @@ static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
return;
}
static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct brcms_info *wl = hw->priv;
spin_lock_bh(&wl->lock);

2
drivers/net/wireless/cw1200/scan.c
View File

@ -78,7 +78,7 @@ int cw1200_hw_scan(struct ieee80211_hw *hw,
if (req->n_ssids > WSM_SCAN_MAX_NUM_OF_SSIDS)
return -EINVAL;
frame.skb = ieee80211_probereq_get(hw, priv->vif, NULL, 0,
frame.skb = ieee80211_probereq_get(hw, priv->vif->addr, NULL, 0,
req->ie_len);
if (!frame.skb)
return -ENOMEM;

9
drivers/net/wireless/mac80211_hwsim.c
View File

@ -1802,7 +1802,7 @@ static void hw_scan_work(struct work_struct *work)
struct sk_buff *probe;
probe = ieee80211_probereq_get(hwsim->hw,
hwsim->hw_scan_vif,
hwsim->hw_scan_vif->addr,
req->ssids[i].ssid,
req->ssids[i].ssid_len,
req->ie_len);
@ -1866,7 +1866,9 @@ static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
mutex_unlock(&hwsim->mutex);
}
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
@ -1884,7 +1886,8 @@ out:
mutex_unlock(&hwsim->mutex);
}
static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *hwsim = hw->priv;

7
drivers/net/wireless/mwl8k.c
View File

@ -5548,7 +5548,9 @@ mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
return rc;
}
static void mwl8k_sw_scan_start(struct ieee80211_hw *hw)
static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct mwl8k_priv *priv = hw->priv;
u8 tmp;
@ -5565,7 +5567,8 @@ static void mwl8k_sw_scan_start(struct ieee80211_hw *hw)
priv->sw_scan_start = true;
}
static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw)
static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mwl8k_priv *priv = hw->priv;
u8 tmp;

7
drivers/net/wireless/rt2x00/rt2x00.h
View File

@ -1437,8 +1437,11 @@ int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr);
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,

7
drivers/net/wireless/rt2x00/rt2x00mac.c
View File

@ -568,7 +568,9 @@ int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
}
EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove);
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw)
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
set_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
@ -576,7 +578,8 @@ void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw)
}
EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_start);
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw)
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
clear_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);

7
drivers/net/wireless/rtlwifi/core.c
View File

@ -1361,7 +1361,9 @@ static int rtl_op_ampdu_action(struct ieee80211_hw *hw,
return 0;
}
static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
static void rtl_op_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
@ -1396,7 +1398,8 @@ static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_BACKUP_BAND0);
}
static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw)
static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

2
drivers/net/wireless/ti/wl1251/main.c
View File

@ -1029,7 +1029,7 @@ static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
goto out_sleep;
}
skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len,
req->ie_len);
if (!skb) {
ret = -ENOMEM;

2
drivers/net/wireless/ti/wlcore/cmd.c
View File

@ -1145,7 +1145,7 @@ int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);
skb = ieee80211_probereq_get(wl->hw, vif, ssid, ssid_len,
skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,
ie0_len + ie1_len);
if (!skb) {
ret = -ENOMEM;

7
drivers/staging/vt6656/main_usb.c
View File

@ -856,7 +856,9 @@ static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
return 0;
}
static void vnt_sw_scan_start(struct ieee80211_hw *hw)
static void vnt_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *addr)
{
struct vnt_private *priv = hw->priv;
@ -865,7 +867,8 @@ static void vnt_sw_scan_start(struct ieee80211_hw *hw)
vnt_update_pre_ed_threshold(priv, true);
}
static void vnt_sw_scan_complete(struct ieee80211_hw *hw)
static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct vnt_private *priv = hw->priv;

15
include/net/mac80211.h
View File

@ -2622,7 +2622,9 @@ enum ieee80211_reconfig_type {
*
* @sw_scan_start: Notifier function that is called just before a software scan
* is started. Can be NULL, if the driver doesn't need this notification.
* The callback can sleep.
* The mac_addr parameter allows supporting NL80211_SCAN_FLAG_RANDOM_ADDR,
* the driver may set the NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR flag if it
* can use this parameter. The callback can sleep.
*
* @sw_scan_complete: Notifier function that is called just after a
* software scan finished. Can be NULL, if the driver doesn't need
@ -3016,8 +3018,11 @@ struct ieee80211_ops {
struct ieee80211_scan_ies *ies);
int (*sched_scan_stop)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
void (*sw_scan_start)(struct ieee80211_hw *hw);
void (*sw_scan_complete)(struct ieee80211_hw *hw);
void (*sw_scan_start)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr);
void (*sw_scan_complete)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
int (*get_stats)(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
@ -3820,7 +3825,7 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
/**
* ieee80211_probereq_get - retrieve a Probe Request template
* @hw: pointer obtained from ieee80211_alloc_hw().
* @vif: &struct ieee80211_vif pointer from the add_interface callback.
* @src_addr: source MAC address
* @ssid: SSID buffer
* @ssid_len: length of SSID
* @tailroom: tailroom to reserve at end of SKB for IEs
@ -3831,7 +3836,7 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
* Return: The Probe Request template. %NULL on error.
*/
struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *src_addr,
const u8 *ssid, size_t ssid_len,
size_t tailroom);

15
net/mac80211/driver-ops.h
View File

@ -380,23 +380,26 @@ static inline int drv_sched_scan_stop(struct ieee80211_local *local,
return ret;
}
static inline void drv_sw_scan_start(struct ieee80211_local *local)
static inline void drv_sw_scan_start(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
const u8 *mac_addr)
{
might_sleep();
trace_drv_sw_scan_start(local);
trace_drv_sw_scan_start(local, sdata, mac_addr);
if (local->ops->sw_scan_start)
local->ops->sw_scan_start(&local->hw);
local->ops->sw_scan_start(&local->hw, &sdata->vif, mac_addr);
trace_drv_return_void(local);
}
static inline void drv_sw_scan_complete(struct ieee80211_local *local)
static inline void drv_sw_scan_complete(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
might_sleep();
trace_drv_sw_scan_complete(local);
trace_drv_sw_scan_complete(local, sdata);
if (local->ops->sw_scan_complete)
local->ops->sw_scan_complete(&local->hw);
local->ops->sw_scan_complete(&local->hw, &sdata->vif);
trace_drv_return_void(local);
}

7
net/mac80211/ieee80211_i.h
View File

@ -1249,6 +1249,7 @@ struct ieee80211_local {
struct work_struct sched_scan_stopped_work;
struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
struct cfg80211_sched_scan_request __rcu *sched_scan_req;
u8 scan_addr[ETH_ALEN];
unsigned long leave_oper_channel_time;
enum mac80211_scan_state next_scan_state;
@ -1901,12 +1902,14 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
u8 bands_used, u32 *rate_masks,
struct cfg80211_chan_def *chandef);
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
u8 *dst, u32 ratemask,
const u8 *src, const u8 *dst,
u32 ratemask,
struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
bool directed);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
const u8 *src, const u8 *dst,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
u32 ratemask, bool directed, u32 tx_flags,

8
net/mac80211/mlme.c
View File

@ -2225,7 +2225,8 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
else
ssid_len = ssid[1];
ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
ssid + 2, ssid_len, NULL,
0, (u32) -1, true, 0,
ifmgd->associated->channel, false);
rcu_read_unlock();
@ -2328,7 +2329,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
else
ssid_len = ssid[1];
skb = ieee80211_build_probe_req(sdata, cbss->bssid,
skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
(u32) -1, cbss->channel,
ssid + 2, ssid_len,
NULL, 0, true);
@ -3649,7 +3650,8 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
* 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, ssidie + 2, ssidie[1],
ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
ssidie + 2, ssidie[1],
NULL, 0, (u32) -1, true, 0,
auth_data->bss->channel, false);
rcu_read_unlock();

48
net/mac80211/scan.c
View File

@ -184,9 +184,21 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
return;
if (ieee80211_is_probe_resp(mgmt->frame_control)) {
/* ignore ProbeResp to foreign address */
if ((!sdata1 || !ether_addr_equal(mgmt->da, sdata1->vif.addr)) &&
(!sdata2 || !ether_addr_equal(mgmt->da, sdata2->vif.addr)))
struct cfg80211_scan_request *scan_req;
struct cfg80211_sched_scan_request *sched_scan_req;
scan_req = rcu_dereference(local->scan_req);
sched_scan_req = rcu_dereference(local->sched_scan_req);
/* ignore ProbeResp to foreign address unless scanning
* with randomised address
*/
if (!(sdata1 &&
(ether_addr_equal(mgmt->da, sdata1->vif.addr) ||
scan_req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)) &&
!(sdata2 &&
(ether_addr_equal(mgmt->da, sdata2->vif.addr) ||
sched_scan_req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)))
return;
elements = mgmt->u.probe_resp.variable;
@ -284,6 +296,9 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)
bands_used, req->rates, &chandef);
local->hw_scan_req->req.ie_len = ielen;
local->hw_scan_req->req.no_cck = req->no_cck;
ether_addr_copy(local->hw_scan_req->req.mac_addr, req->mac_addr);
ether_addr_copy(local->hw_scan_req->req.mac_addr_mask,
req->mac_addr_mask);
return true;
}
@ -294,6 +309,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
bool hw_scan = local->ops->hw_scan;
bool was_scanning = local->scanning;
struct cfg80211_scan_request *scan_req;
struct ieee80211_sub_if_data *scan_sdata;
lockdep_assert_held(&local->mtx);
@ -332,6 +348,9 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
if (scan_req != local->int_scan_req)
cfg80211_scan_done(scan_req, aborted);
RCU_INIT_POINTER(local->scan_req, NULL);
scan_sdata = rcu_dereference_protected(local->scan_sdata,
lockdep_is_held(&local->mtx));
RCU_INIT_POINTER(local->scan_sdata, NULL);
local->scanning = 0;
@ -342,7 +361,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
if (!hw_scan) {
ieee80211_configure_filter(local);
drv_sw_scan_complete(local);
drv_sw_scan_complete(local, scan_sdata);
ieee80211_offchannel_return(local);
}
@ -368,7 +387,8 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
}
EXPORT_SYMBOL(ieee80211_scan_completed);
static int ieee80211_start_sw_scan(struct ieee80211_local *local)
static int ieee80211_start_sw_scan(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
/* Software scan is not supported in multi-channel cases */
if (local->use_chanctx)
@ -387,7 +407,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
* nullfunc frames and probe requests will be dropped in
* ieee80211_tx_h_check_assoc().
*/
drv_sw_scan_start(local);
drv_sw_scan_start(local, sdata, local->scan_addr);
local->leave_oper_channel_time = jiffies;
local->next_scan_state = SCAN_DECISION;
@ -463,7 +483,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
for (i = 0; i < scan_req->n_ssids; i++)
ieee80211_send_probe_req(
sdata, NULL,
sdata, local->scan_addr, NULL,
scan_req->ssids[i].ssid, scan_req->ssids[i].ssid_len,
scan_req->ie, scan_req->ie_len,
scan_req->rates[band], false,
@ -543,6 +563,13 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
rcu_assign_pointer(local->scan_req, req);
rcu_assign_pointer(local->scan_sdata, sdata);
if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
get_random_mask_addr(local->scan_addr,
req->mac_addr,
req->mac_addr_mask);
else
memcpy(local->scan_addr, sdata->vif.addr, ETH_ALEN);
if (local->ops->hw_scan) {
__set_bit(SCAN_HW_SCANNING, &local->scanning);
} else if ((req->n_channels == 1) &&
@ -559,7 +586,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
/* Notify driver scan is starting, keep order of operations
* same as normal software scan, in case that matters. */
drv_sw_scan_start(local);
drv_sw_scan_start(local, sdata, local->scan_addr);
ieee80211_configure_filter(local); /* accept probe-responses */
@ -589,8 +616,9 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (local->ops->hw_scan) {
WARN_ON(!ieee80211_prep_hw_scan(local));
rc = drv_hw_scan(local, sdata, local->hw_scan_req);
} else
rc = ieee80211_start_sw_scan(local);
} else {
rc = ieee80211_start_sw_scan(local, sdata);
}
if (rc) {
kfree(local->hw_scan_req);

31
net/mac80211/trace.h
View File

@ -596,14 +596,33 @@ DEFINE_EVENT(local_sdata_evt, drv_sched_scan_stop,
TP_ARGS(local, sdata)
);
DEFINE_EVENT(local_only_evt, drv_sw_scan_start,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local)
TRACE_EVENT(drv_sw_scan_start,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
const u8 *mac_addr),
TP_ARGS(local, sdata, mac_addr),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
__array(char, mac_addr, ETH_ALEN)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
memcpy(__entry->mac_addr, mac_addr, ETH_ALEN);
),
TP_printk(LOCAL_PR_FMT ", " VIF_PR_FMT ", addr:%pM",
LOCAL_PR_ARG, VIF_PR_ARG, __entry->mac_addr)
);
DEFINE_EVENT(local_only_evt, drv_sw_scan_complete,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local)
DEFINE_EVENT(local_sdata_evt, drv_sw_scan_complete,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata),
TP_ARGS(local, sdata)
);
TRACE_EVENT(drv_get_stats,

9
net/mac80211/tx.c
View File

@ -2961,19 +2961,16 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
EXPORT_SYMBOL(ieee80211_nullfunc_get);
struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *src_addr,
const u8 *ssid, size_t ssid_len,
size_t tailroom)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_local *local;
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_hdr_3addr *hdr;
struct sk_buff *skb;
size_t ie_ssid_len;
u8 *pos;
sdata = vif_to_sdata(vif);
local = sdata->local;
ie_ssid_len = 2 + ssid_len;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*hdr) +
@ -2988,7 +2985,7 @@ struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_REQ);
eth_broadcast_addr(hdr->addr1);
memcpy(hdr->addr2, vif->addr, ETH_ALEN);
memcpy(hdr->addr2, src_addr, ETH_ALEN);
eth_broadcast_addr(hdr->addr3);
pos = skb_put(skb, ie_ssid_len);

12
net/mac80211/util.c
View File

@ -1523,7 +1523,8 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
};
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
u8 *dst, u32 ratemask,
const u8 *src, const u8 *dst,
u32 ratemask,
struct ieee80211_channel *chan,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
@ -1548,8 +1549,8 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
else
chandef.chan = chan;
skb = ieee80211_probereq_get(&local->hw, &sdata->vif,
ssid, ssid_len, 100 + ie_len);
skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
100 + ie_len);
if (!skb)
return NULL;
@ -1571,7 +1572,8 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
return skb;
}
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
const u8 *src, const u8 *dst,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len,
u32 ratemask, bool directed, u32 tx_flags,
@ -1579,7 +1581,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
{
struct sk_buff *skb;
skb = ieee80211_build_probe_req(sdata, dst, ratemask, channel,
skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel,
ssid, ssid_len,
ie, ie_len, directed);
if (skb) {