summaryrefslogtreecommitdiffstats
path: root/net/mac80211/util.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r--net/mac80211/util.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 725af7a..3c61060 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3,6 +3,7 @@
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -1014,6 +1015,31 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
}
elems->pwr_constr_elem = pos;
break;
+ case WLAN_EID_CISCO_VENDOR_SPECIFIC:
+ /* Lots of different options exist, but we only care
+ * about the Dynamic Transmit Power Control element.
+ * First check for the Cisco OUI, then for the DTPC
+ * tag (0x00).
+ */
+ if (elen < 4) {
+ elem_parse_failed = true;
+ break;
+ }
+
+ if (pos[0] != 0x00 || pos[1] != 0x40 ||
+ pos[2] != 0x96 || pos[3] != 0x00)
+ break;
+
+ if (elen != 6) {
+ elem_parse_failed = true;
+ break;
+ }
+
+ if (calc_crc)
+ crc = crc32_be(crc, pos - 2, elen + 2);
+
+ elems->cisco_dtpc_elem = pos;
+ break;
case WLAN_EID_TIMEOUT_INTERVAL:
if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
elems->timeout_int = (void *)pos;
OpenPOWER on IntegriCloud