@@ -1241,6 +1241,30 @@ ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
return 0;
}
+static u8 ieee80211_num_beaconing_links(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_link_data *link;
+ u8 link_id, num = 0;
+
+ if (sdata->vif.type != NL80211_IFTYPE_AP &&
+ sdata->vif.type != NL80211_IFTYPE_P2P_GO)
+ return num;
+
+ if (!sdata->vif.valid_links)
+ return num;
+
+ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (!link)
+ continue;
+
+ if (sdata_dereference(link->u.ap.beacon, sdata))
+ num++;
+ }
+
+ return num;
+}
+
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ap_settings *params)
{
@@ -1470,7 +1494,9 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
ieee80211_link_info_change_notify(sdata, link, changed);
- netif_carrier_on(dev);
+ if (ieee80211_num_beaconing_links(sdata) <= 1)
+ netif_carrier_on(dev);
+
list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
netif_carrier_on(vlan->dev);
@@ -1592,7 +1618,9 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
/* turn off carrier for this interface and dependent VLANs */
list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
netif_carrier_off(vlan->dev);
- netif_carrier_off(dev);
+
+ if (ieee80211_num_beaconing_links(sdata) <= 1)
+ netif_carrier_off(dev);
/* remove beacon and probe response */
sdata->u.ap.active = false;
Currently whenever link AP is started, netif_carrier_up() function is called and whenever it is brought down, netif_carrier_down() function is called. However, with MLO, all the links of the same MLD would use the same netdev. Hence there is no need to indicate for each link up/down. Also, calling it down when only one of the links went down is not desirable. Add changes to call the netif_carrier_up() function only when first link is brought up. Similarly, add changes to call the netif_carrier_down() function only when last link is brought down. In order to check the number of beaconing links in the given interface, introduce a new helper function ieee80211_num_beaconing_links(). Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> --- net/mac80211/cfg.c | 32 ++++++++++++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-)