From: Johannes Berg <[email protected]> This adds support for scanning with random MAC address for both software and hardware scan.
Change-Id: Ib667b4ba0f515f9d1fc073d8ae4c7785f6c3e124 Signed-off-by: Johannes Berg <[email protected]> --- drivers/net/wireless/mac80211_hwsim.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 8507e42fe68c..a052e7775ee2 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -422,6 +422,7 @@ struct mac80211_hwsim_data { struct cfg80211_scan_request *hw_scan_request; struct ieee80211_vif *hw_scan_vif; int scan_chan_idx; + u8 scan_addr[ETH_ALEN]; struct ieee80211_channel *channel; u64 beacon_int /* beacon interval in us */; @@ -830,6 +831,9 @@ static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data, .ret = false, }; + if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0) + return true; + memcpy(md.addr, addr, ETH_ALEN); ieee80211_iterate_active_interfaces_atomic(data->hw, @@ -1752,7 +1756,7 @@ static void hw_scan_work(struct work_struct *work) struct sk_buff *probe; probe = ieee80211_probereq_get(hwsim->hw, - hwsim->hw_scan_vif->addr, + hwsim->scan_addr, req->ssids[i].ssid, req->ssids[i].ssid_len, req->ie_len); @@ -1790,6 +1794,17 @@ static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw, hwsim->hw_scan_request = req; hwsim->hw_scan_vif = vif; hwsim->scan_chan_idx = 0; + if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { + int i; + + get_random_bytes(hwsim->scan_addr, ETH_ALEN); + for (i = 0; i < ETH_ALEN; i++) { + hwsim->scan_addr[i] &= ~hw_req->req.mac_addr_mask[i]; + hwsim->scan_addr[i] |= hw_req->req.mac_addr[i]; + } + } else { + memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN); + } mutex_unlock(&hwsim->mutex); wiphy_debug(hw->wiphy, "hwsim hw_scan request\n"); @@ -1830,6 +1845,8 @@ static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw, } printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n"); + + memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN); hwsim->scanning = true; out: @@ -1845,6 +1862,7 @@ static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw, printk(KERN_DEBUG "hwsim sw_scan_complete\n"); hwsim->scanning = false; + memset(hwsim->scan_addr, 0, ETH_ALEN); mutex_unlock(&hwsim->mutex); } @@ -2270,7 +2288,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info, hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR | NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 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 */ hw->vif_data_size = sizeof(struct hwsim_vif_priv); -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
