Create a TIM IE similarly to AP mode and add it to mesh beacons.
Signed-off-by: Marco Porsch <marco.porsch@xxxxxxxxxxxxxxxxxxx>
---
net/mac80211/tx.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 1194020..44a597b 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2332,6 +2332,31 @@ static void ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
}
}
+static int mesh_add_tim_ie(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata,
+ u16 *tim_offset, u16 *tim_length)
+{
+ struct ieee80211_local *local = sdata->local;
+ u16 tmp = skb->len;
+
+ if (local->tim_in_locked_section) {
+ ieee80211_beacon_add_tim(sdata, &sdata->u.mesh.ps, skb);
+ } else {
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->tim_lock, flags);
+ ieee80211_beacon_add_tim(sdata, &sdata->u.mesh.ps, skb);
+ spin_unlock_irqrestore(&local->tim_lock, flags);
+ }
+
+ if (tim_offset)
+ *tim_offset = tmp - local->hw.extra_tx_headroom;
+ if (tim_length)
+ *tim_length = skb->len - tmp;
+
+ return 0;
+}
+
struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u16 *tim_offset, u16 *tim_length)
@@ -2439,6 +2464,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
2 + /* NULL SSID */
2 + 8 + /* supported rates */
2 + 3 + /* DS params */
+ 256 + /* TIM IE */
2 + (IEEE80211_MAX_SUPP_RATES - 8) +
2 + sizeof(struct ieee80211_ht_cap) +
2 + sizeof(struct ieee80211_ht_operation) +
@@ -2472,6 +2498,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
mesh_add_ds_params_ie(skb, sdata) ||
+ mesh_add_tim_ie(skb, sdata, tim_offset, tim_length) ||
ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
mesh_add_rsn_ie(skb, sdata) ||
mesh_add_ht_cap_ie(skb, sdata) ||
--
1.7.9.5
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