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wifi: mac80211: Parse station profile from association response

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When processing an association response frame for a Multi-Link
connection, extract the per station profile for each additional
link, and use it for parsing the link elements.

As the Multi-Link element might be fragmented, add support for
reassembling a fragmented element. To simplify memory management
logic, extend 'struct ieee802_11_elems' to hold a scratch buffer,
which is used for the defragmentation. Once an element is
reconstructed in the scratch area, point the corresponding element
pointer to it. Currently only defragmentation of Multi-Link element
and the contained per-STA profile subelement is supported.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ilan Peer
2022-09-06 11:48:56 +03:00
committed by Johannes Berg
parent fb99c7d4d6
commit 45ebac4f05
4 changed files with 188 additions and 6 deletions
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include/linux/ieee80211.h
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@@ -4666,6 +4666,7 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
enum ieee80211_mle_subelems {
IEEE80211_MLE_SUBELEM_PER_STA_PROFILE = 0,
IEEE80211_MLE_SUBELEM_FRAGMENT = 254,
};
#define IEEE80211_MLE_STA_CONTROL_LINK_ID 0x000f