mac80211_hwsim: initialize ieee80211_tx_info at hw_scan_work
[ Upstream commit cacfddf82baf1470e5741edeecb187260868f195 ]
In mac80211_hwsim, the probe_req frame is created and sent while
scanning. It is sent with ieee80211_tx_info which is not initialized.
Uninitialized ieee80211_tx_info can cause problems when using
mac80211_hwsim with wmediumd. wmediumd checks the tx_rates field of
ieee80211_tx_info and doesn't relay probe_req frame to other clients
even if it is a broadcasting message.
Call ieee80211_tx_prepare_skb() to initialize ieee80211_tx_info for
the probe_req that is created by hw_scan_work in mac80211_hwsim.
Signed-off-by: JaeMan Park <jaeman@google.com>
Link: https://lore.kernel.org/r/20220113060235.546107-1-jaeman@google.com
[fix memory leak]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index a965ce9..a34647e 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1987,6 +1987,15 @@
memcpy(skb_put(probe, req->ie_len), req->ie,
req->ie_len);
+ if (!ieee80211_tx_prepare_skb(hwsim->hw,
+ hwsim->hw_scan_vif,
+ probe,
+ hwsim->tmp_chan->band,
+ NULL)) {
+ kfree_skb(probe);
+ continue;
+ }
+
local_bh_disable();
mac80211_hwsim_tx_frame(hwsim->hw, probe,
hwsim->tmp_chan);