&callbacks);
}
+struct iwl_mvm_link_sel_data {
+ u8 link_id;
+ enum nl80211_band band;
+ bool active;
+};
+
+static bool iwl_mvm_mld_valid_link_pair(struct iwl_mvm_link_sel_data *a,
+ struct iwl_mvm_link_sel_data *b)
+{
+ return a->band != b->band;
+}
+
+void iwl_mvm_mld_select_links(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+ bool valid_links_changed)
+{
+ struct iwl_mvm_link_sel_data data[IEEE80211_MLD_MAX_NUM_LINKS];
+ unsigned long usable_links = ieee80211_vif_usable_links(vif);
+ u32 max_active_links = iwl_mvm_max_active_links(mvm, vif);
+ u16 new_active_links;
+ u8 link_id, n_data = 0, i, j;
+
+ if (!IWL_MVM_AUTO_EML_ENABLE)
+ return;
+
+ if (!ieee80211_vif_is_mld(vif) || usable_links == 1)
+ return;
+
+ /* The logic below is a simple version that doesn't suit more than 2
+ * links
+ */
+ WARN_ON_ONCE(max_active_links > 2);
+
+ /* if only a single active link is supported, assume that the one
+ * selected by higher layer for connection establishment is the best.
+ */
+ if (max_active_links == 1 && !valid_links_changed)
+ return;
+
+ /* If we are already using the maximal number of active links, don't do
+ * any change. This can later be optimized to pick a 'better' link pair.
+ */
+ if (hweight16(vif->active_links) == max_active_links)
+ return;
+
+ rcu_read_lock();
+
+ for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) {
+ struct ieee80211_bss_conf *link_conf =
+ rcu_dereference(vif->link_conf[link_id]);
+
+ if (WARN_ON_ONCE(!link_conf))
+ continue;
+
+ data[n_data].link_id = link_id;
+ data[n_data].band = link_conf->chandef.chan->band;
+ data[n_data].active = vif->active_links & BIT(link_id);
+ n_data++;
+ }
+
+ rcu_read_unlock();
+
+ /* this is expected to be the current active link */
+ if (n_data == 1)
+ return;
+
+ new_active_links = 0;
+
+ /* Assume that after association only a single link is active, thus,
+ * select only the 2nd link
+ */
+ if (!valid_links_changed) {
+ for (i = 0; i < n_data; i++) {
+ if (data[i].active)
+ break;
+ }
+
+ if (WARN_ON_ONCE(i == n_data))
+ return;
+
+ for (j = 0; j < n_data; j++) {
+ if (i == j)
+ continue;
+
+ if (iwl_mvm_mld_valid_link_pair(&data[i], &data[j]))
+ break;
+ }
+
+ if (j != n_data)
+ new_active_links = BIT(data[i].link_id) |
+ BIT(data[j].link_id);
+ } else {
+ /* Try to find a valid link pair for EMLSR operation. If a pair
+ * is not found continue using the current active link.
+ */
+ for (i = 0; i < n_data; i++) {
+ for (j = 0; j < n_data; j++) {
+ if (i == j)
+ continue;
+
+ if (iwl_mvm_mld_valid_link_pair(&data[i],
+ &data[j]))
+ break;
+ }
+
+ /* found a valid pair for EMLSR, use it */
+ if (j != n_data) {
+ new_active_links = BIT(data[i].link_id) |
+ BIT(data[j].link_id);
+ break;
+ }
+ }
+ }
+
+ if (WARN_ON(!new_active_links))
+ return;
+
+ if (vif->active_links != new_active_links)
+ ieee80211_set_active_links_async(vif, new_active_links);
+}
+
static void
iwl_mvm_mld_link_info_changed_station(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
if (ret)
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
+ if (changes & BSS_CHANGED_MLD_VALID_LINKS)
+ iwl_mvm_mld_select_links(mvm, vif, true);
+
memcpy(mvmvif->link[link_conf->link_id]->bssid, link_conf->bssid,
ETH_ALEN);