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mac80211: use exact-size allocation for authentication frame

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The authentication frame has a fixied size of 30 bytes
(including header, algo num, trans seq num, and status)
followed by a variable challenge text.
Allocate using exact size, instead of over-allocation
by sizeof(ieee80211_mgmt).

Signed-off-by: Fred Zhou <fred.zy@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Fred Zhou 2013-09-24 10:33:01 +08:00 • committed by Johannes Berg
parent f0823475d5
commit 15e230abaa
1 changed files with 2 additions and 2 deletions
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4
net/mac80211/util.c
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@ -1081,8 +1081,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt; struct ieee80211_mgmt *mgmt;
int err; int err;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
sizeof(*mgmt) + 6 + extra_len); skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len);
if (!skb) if (!skb)
return; return;