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mac80211_hwsim: support scanning with random MAC address

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This adds support for scanning with random MAC address for
both software and hardware scan.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2014-06-12 22:41:00 +02:00
parent a344d6778a
commit 339467b906
1 changed files with 16 additions and 2 deletions
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18
drivers/net/wireless/mac80211_hwsim.c
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@ -422,6 +422,7 @@ struct mac80211_hwsim_data {
struct cfg80211_scan_request *hw_scan_request; struct cfg80211_scan_request *hw_scan_request;
struct ieee80211_vif *hw_scan_vif; struct ieee80211_vif *hw_scan_vif;
int scan_chan_idx; int scan_chan_idx;
u8 scan_addr[ETH_ALEN];
struct ieee80211_channel *channel; struct ieee80211_channel *channel;
u64 beacon_int /* beacon interval in us */; u64 beacon_int /* beacon interval in us */;
@ -830,6 +831,9 @@ static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
.ret = false, .ret = false,
}; };
if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
return true;
memcpy(md.addr, addr, ETH_ALEN); memcpy(md.addr, addr, ETH_ALEN);
ieee80211_iterate_active_interfaces_atomic(data->hw, ieee80211_iterate_active_interfaces_atomic(data->hw,
@ -1802,7 +1806,7 @@ static void hw_scan_work(struct work_struct *work)
struct sk_buff *probe; struct sk_buff *probe;
probe = ieee80211_probereq_get(hwsim->hw, probe = ieee80211_probereq_get(hwsim->hw,
hwsim->hw_scan_vif->addr, hwsim->scan_addr,
req->ssids[i].ssid, req->ssids[i].ssid,
req->ssids[i].ssid_len, req->ssids[i].ssid_len,
req->ie_len); req->ie_len);
@ -1840,6 +1844,12 @@ static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
hwsim->hw_scan_request = req; hwsim->hw_scan_request = req;
hwsim->hw_scan_vif = vif; hwsim->hw_scan_vif = vif;
hwsim->scan_chan_idx = 0; hwsim->scan_chan_idx = 0;
if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
get_random_mask_addr(hwsim->scan_addr,
hw_req->req.mac_addr,
hw_req->req.mac_addr_mask);
else
memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
mutex_unlock(&hwsim->mutex); mutex_unlock(&hwsim->mutex);
wiphy_debug(hw->wiphy, "hwsim hw_scan request\n"); wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
@ -1880,6 +1890,8 @@ static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
} }
printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n"); printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
hwsim->scanning = true; hwsim->scanning = true;
out: out:
@ -1895,6 +1907,7 @@ static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
printk(KERN_DEBUG "hwsim sw_scan_complete\n"); printk(KERN_DEBUG "hwsim sw_scan_complete\n");
hwsim->scanning = false; hwsim->scanning = false;
memset(hwsim->scan_addr, 0, ETH_ALEN);
mutex_unlock(&hwsim->mutex); mutex_unlock(&hwsim->mutex);
} }
@ -2320,7 +2333,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR | hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
NL80211_FEATURE_STATIC_SMPS | NL80211_FEATURE_STATIC_SMPS |
NL80211_FEATURE_DYNAMIC_SMPS; NL80211_FEATURE_DYNAMIC_SMPS |
NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
/* ask mac80211 to reserve space for magic */ /* ask mac80211 to reserve space for magic */
hw->vif_data_size = sizeof(struct hwsim_vif_priv); hw->vif_data_size = sizeof(struct hwsim_vif_priv);