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mac80211: parse Timeout Interval Element using a struct

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Instead of open-coding the accesses and length check do
the length check in the IE parser and assign a struct
pointer for use in the remaining code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2013-03-27 14:38:07 +01:00
parent 1946bed957
commit 79ba1d8910
4 changed files with 18 additions and 7 deletions
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net/mac80211/mlme.c
+3 -3
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@@ -2629,10 +2629,10 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
elems.timeout_int && elems.timeout_int_len == 5 &&
elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
elems.timeout_int &&
elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
u32 tu, ms;
tu = get_unaligned_le32(elems.timeout_int + 1);
tu = le32_to_cpu(elems.timeout_int->value);
ms = tu * 1024 / 1000;
sdata_info(sdata,
"%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",