ath6kl: Report PMKSA candidate events through cfg80211

This allows RSN pre-authentication to be used when roaming decisions are
done in the target.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

2 files changed, 40 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c
index b90d116c018c..47fbb8e7686b 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -1097,6 +1097,35 @@ static int ath6kl_wmi_scan_complete_rx(struct wmi *wmi, u8 *datap, int len)
         return 0;
 }
 
+static int ath6kl_wmi_neighbor_report_event_rx(struct wmi *wmi, u8 *datap,
+                                               int len)
+{
+        struct wmi_neighbor_report_event *ev;
+        u8 i;
+
+        if (len < sizeof(*ev))
+                return -EINVAL;
+        ev = (struct wmi_neighbor_report_event *) datap;
+        if (sizeof(*ev) + ev->num_neighbors * sizeof(struct wmi_neighbor_info)
+            > len) {
+                ath6kl_dbg(ATH6KL_DBG_WMI, "truncated neighbor event "
+                           "(num=%d len=%d)\n", ev->num_neighbors, len);
+                return -EINVAL;
+        }
+        for (i = 0; i < ev->num_neighbors; i++) {
+                ath6kl_dbg(ATH6KL_DBG_WMI, "neighbor %d/%d - %pM 0x%x\n",
+                           i + 1, ev->num_neighbors, ev->neighbor[i].bssid,
+                           ev->neighbor[i].bss_flags);
+                cfg80211_pmksa_candidate_notify(wmi->parent_dev->net_dev, i,
+                                                ev->neighbor[i].bssid,
+                                                !!(ev->neighbor[i].bss_flags &
+                                                   WMI_PREAUTH_CAPABLE_BSS),
+                                                GFP_ATOMIC);
+        }
+
+        return 0;
+}
+
 /*
  * Target is reporting a programming error.  This is for
  * developer aid only.  Target only checks a few common violations
@@ -2870,6 +2899,7 @@ int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb)
                 break;
         case WMI_NEIGHBOR_REPORT_EVENTID:
                 ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_NEIGHBOR_REPORT_EVENTID\n");
+                ret = ath6kl_wmi_neighbor_report_event_rx(wmi, datap, len);
                 break;
         case WMI_SCAN_COMPLETE_EVENTID:
                 ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SCAN_COMPLETE_EVENTID\n");
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.h b/drivers/net/wireless/ath/ath6kl/wmi.h
index d458d6d3a27f..f8e644d54aa7 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.h
+++ b/drivers/net/wireless/ath/ath6kl/wmi.h
@@ -1439,6 +1439,16 @@ enum wmi_bss_flags {
         WMI_PMKID_VALID_BSS = 0x02,
 };
 
+struct wmi_neighbor_info {
+        u8 bssid[ETH_ALEN];
+        u8 bss_flags; /* enum wmi_bss_flags */
+} __packed;
+
+struct wmi_neighbor_report_event {
+        u8 num_neighbors;
+        struct wmi_neighbor_info neighbor[0];
+} __packed;
+
 /* TKIP MIC Error Event */
 struct wmi_tkip_micerr_event {
         u8 key_id;