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| author |   Fred Zhou <fred.zy@gmail.com> | 2013-09-24 10:33:01 +0800 |
|---|---|---|
| committer |   Johannes Berg <johannes.berg@intel.com> | 2013-10-01 12:20:38 +0200 |
| commit | 15e230abaaa5a79feb25d1ef29b380e8b63aea0c (patch) | |
| tree | 6960ab6a712d09c7c95f39355833c93cf42369fa /net/mac80211 | |
| parent | cfg80211: parse dfs region for internal regdb option (diff) | |
| download | linux-dev-15e230abaaa5a79feb25d1ef29b380e8b63aea0c.tar.xz linux-dev-15e230abaaa5a79feb25d1ef29b380e8b63aea0c.zip | |
mac80211: use exact-size allocation for authentication frame
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>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/util.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 3c8283b9b45a..1fb31f94bf89 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1081,8 +1081,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt; int err; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + - sizeof(*mgmt) + 6 + extra_len); + /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ + skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 6 + extra_len); if (!skb) return; |