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cfg80211: Define IEEE P802.11ai (FILS) information elements

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Define the Element IDs and Element ID Extensions from IEEE
P802.11ai/D11.0. In addition, add a new cfg80211_find_ext_ie() wrapper
to make it easier to find information elements that used the Element ID
Extension field.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jouni Malinen 2016-10-27 00:42:01 +03:00 • committed by Johannes Berg
commit 3f817fe718
2 changed files with 41 additions and 0 deletions
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21
include/net/cfg80211.h
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@ -4180,6 +4180,27 @@ static inline const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len)
return cfg80211_find_ie_match(eid, ies, len, NULL, 0, 0);
}
/**
* cfg80211_find_ext_ie - find information element with EID Extension in data
*
* @ext_eid: element ID Extension
* @ies: data consisting of IEs
* @len: length of data
*
* Return: %NULL if the extended element ID could not be found or if
* the element is invalid (claims to be longer than the given
* data), or a pointer to the first byte of the requested
* element, that is the byte containing the element ID.
*
* Note: There are no checks on the element length other than
* having to fit into the given data.
*/
static inline const u8 *cfg80211_find_ext_ie(u8 ext_eid, const u8 *ies, int len)
{
return cfg80211_find_ie_match(WLAN_EID_EXTENSION, ies, len,
&ext_eid, 1, 2);
}
/**
* cfg80211_find_vendor_ie - find vendor specific information element in data
*