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Commit 744462a9 authored by Max Stepanov's avatar Max Stepanov Committed by Johannes Berg
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mac80211: WEP extra head/tail room in ieee80211_send_auth 



After skb allocation and call to ieee80211_wep_encrypt in ieee80211_send_auth
the flow fails with a warning in ieee80211_wep_add_iv on verification of
available head/tailroom needed for WEP_IV and WEP_ICV.

Signed-off-by: default avatarMax Stepanov <Max.Stepanov@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 7171511e

net/mac80211/util.c

+3 −2
Original line number Diff line number Diff line
@@ -1096,11 +1096,12 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 
	int err;



	/* 24 + 6 = header + auth_algo + auth_transaction + status_code */

	skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len);

	skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +

			    24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);

	if (!skb)

		return;



	skb_reserve(skb, local->hw.extra_tx_headroom);

	skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);



	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);

	memset(mgmt, 0, 24 + 6);