Commit 2aa485e1 authored by John Crispin's avatar John Crispin Committed by Johannes Berg
Browse files

mac80211: add support for parsing ADDBA_EXT IEs 



ADDBA_EXT IEs can be used to negotiate the BA fragmentation level.

Signed-off-by: default avatarJohn Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20190713163642.18491-2-john@phrozen.org


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 60d7dfea

include/linux/ieee80211.h

+8 −0
Original line number Diff line number Diff line
@@ -881,6 +881,14 @@ struct ieee80211_tpc_report_ie { 
	u8 link_margin;

} __packed;



#define IEEE80211_ADDBA_EXT_FRAG_LEVEL_MASK	GENMASK(2, 1)

#define IEEE80211_ADDBA_EXT_FRAG_LEVEL_SHIFT	1

#define IEEE80211_ADDBA_EXT_NO_FRAG		BIT(0)



struct ieee80211_addba_ext_ie {

	u8 data;

} __packed;



struct ieee80211_mgmt {

	__le16 frame_control;

	__le16 duration;

net/mac80211/ieee80211_i.h

+1 −0
Original line number Diff line number Diff line
@@ -1506,6 +1506,7 @@ struct ieee802_11_elems { 
	u8 max_bssid_indicator;

	u8 dtim_count;

	u8 dtim_period;

	const struct ieee80211_addba_ext_ie *addba_ext_ie;



	/* length of them, respectively */

	u8 ext_capab_len;

net/mac80211/util.c

+7 −0
Original line number Diff line number Diff line
@@ -1200,6 +1200,13 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 


			elems->cisco_dtpc_elem = pos;

			break;

		case WLAN_EID_ADDBA_EXT:

			if (elen != sizeof(struct ieee80211_addba_ext_ie)) {

				elem_parse_failed = true;

				break;

			}

			elems->addba_ext_ie = (void *)pos;

			break;

		case WLAN_EID_TIMEOUT_INTERVAL:

			if (elen >= sizeof(struct ieee80211_timeout_interval_ie))

				elems->timeout_int = (void *)pos;

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