From bd54f3c29077f23dad92ef82a78061b40be30c65 Mon Sep 17 00:00:00 2001 From: Aloka Dixit Date: Mon, 5 Dec 2022 16:50:37 -0800 Subject: wifi: mac80211: generate EMA beacons in AP mode Add APIs to generate an array of beacons for an EMA AP (enhanced multiple BSSID advertisements), each including a single MBSSID element. EMA profile periodicity equals the count of elements. - ieee80211_beacon_get_template_ema_list() - Generate and return all EMA beacon templates. Drivers must call ieee80211_beacon_free_ema_list() to free the memory. No change in the prototype for the existing API, ieee80211_beacon_get_template(), which should be used for non-EMA AP. - ieee80211_beacon_get_template_ema_index() - Generate a beacon which includes the multiple BSSID element at the given index. Drivers can use this function in a loop until NULL is returned which indicates end of available MBSSID elements. - ieee80211_beacon_free_ema_list() - free the memory allocated for the list of EMA beacon templates. Modify existing functions ieee80211_beacon_get_ap(), ieee80211_get_mbssid_beacon_len() and ieee80211_beacon_add_mbssid() to accept a new parameter for EMA index. Signed-off-by: Aloka Dixit Co-developed-by: John Crispin Signed-off-by: John Crispin Link: https://lore.kernel.org/r/20221206005040.3177-2-quic_alokad@quicinc.com Signed-off-by: Johannes Berg --- net/mac80211/ieee80211_i.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'net/mac80211/ieee80211_i.h') diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index c8c037a9e4e2..84d10e993eca 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1186,13 +1186,17 @@ ieee80211_vif_get_shift(struct ieee80211_vif *vif) } static inline int -ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems) +ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, u8 i) { - int i, len = 0; + int len = 0; - if (!elems) + if (!elems || !elems->cnt || i > elems->cnt) return 0; + if (i < elems->cnt) + return elems->elem[i].len; + + /* i == elems->cnt, calculate total length of all MBSSID elements */ for (i = 0; i < elems->cnt; i++) len += elems->elem[i].len; -- cgit v1.2.3