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mac80211: add support for parsing ADDBA_EXT IEs

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

Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20190713163642.18491-2-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
John Crispin 2019-07-13 18:36:41 +02:00 committed by Johannes Berg
parent 60d7dfea00
commit 2aa485e114
3 changed files with 16 additions and 0 deletions
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8
include/linux/ieee80211.h
View File

@ -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;

1
net/mac80211/ieee80211_i.h
View File

@ -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;

7
net/mac80211/util.c
View File

@ -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;