qcacld-3.0: Send last disconnect reason in sta_info to userspace

Driver caches last disconnected reason code in adapter. Convert it
to enum qca_disconnect_reason_codes and send it in STA_INFO to
userspace.

Change-Id: Ifd8566f4fb7d412d9a6ded0ae06f51b0c1dd6d2b
CRs-Fixed: 2624792

core/hdd/src/wlan_hdd_cfg80211.c

@@ -17790,6 +17790,7 @@ static int wlan_hdd_cfg80211_connect_start(struct hdd_adapter *adapter,
 	 */
 	hdd_sta_ctx->conn_info.gtk_installed = false;
 	hdd_sta_ctx->conn_info.ptk_installed = false;
+	adapter->last_disconnect_reason = 0;
 
 	roam_profile = hdd_roam_profile(adapter);
 	if (roam_profile) {

core/hdd/src/wlan_hdd_station_info.c

@@ -104,6 +104,8 @@
 	QCA_WLAN_VENDOR_ATTR_GET_STATION_INFO_REMOTE_RX_RETRY_COUNT
 #define REMOTE_RX_BC_MC_COUNT \
 	QCA_WLAN_VENDOR_ATTR_GET_STATION_INFO_REMOTE_RX_BC_MC_COUNT
+#define DISCONNECT_REASON \
+	QCA_WLAN_VENDOR_ATTR_GET_STATION_INFO_DRIVER_DISCONNECT_REASON
 
 /*
  * MSB of rx_mc_bc_cnt indicates whether FW supports rx_mc_bc_cnt
@@ -575,6 +577,81 @@ fail:
 	return -EINVAL;
 }
 
+/**
+ * wlan_hdd_sir_mac_to_qca_reason() - Convert to qca internal disconnect reason
+ * @internal_reason: Mac reason code of type @enum eSirMacReasonCodes
+ *
+ * Check if it is internal reason code and convert it to the
+ * enum qca_disconnect_reason_codes.
+ *
+ * Return: Reason code of type enum qca_disconnect_reason_codes
+ */
+static enum qca_disconnect_reason_codes
+wlan_hdd_sir_mac_to_qca_reason(enum eSirMacReasonCodes internal_reason)
+{
+	enum qca_disconnect_reason_codes reason =
+					QCA_DISCONNECT_REASON_UNSPECIFIED;
+	switch (internal_reason) {
+	case eSIR_MAC_HOST_TRIGGERED_ROAM_FAILURE:
+		reason = QCA_DISCONNECT_REASON_INTERNAL_ROAM_FAILURE;
+		break;
+	case eSIR_MAC_FW_TRIGGERED_ROAM_FAILURE:
+		reason = QCA_DISCONNECT_REASON_EXTERNAL_ROAM_FAILURE;
+		break;
+	case eSIR_MAC_GATEWAY_REACHABILITY_FAILURE:
+		reason =
+		QCA_DISCONNECT_REASON_GATEWAY_REACHABILITY_FAILURE;
+		break;
+	case eSIR_MAC_UNSUPPORTED_CHANNEL_CSA:
+		reason = QCA_DISCONNECT_REASON_UNSUPPORTED_CHANNEL_CSA;
+		break;
+	case eSIR_MAC_OPER_CHANNEL_DISABLED_INDOOR:
+		reason =
+		QCA_DISCONNECT_REASON_OPER_CHANNEL_DISABLED_INDOOR;
+		break;
+	case eSIR_MAC_OPER_CHANNEL_USER_DISABLED:
+		reason =
+		QCA_DISCONNECT_REASON_OPER_CHANNEL_USER_DISABLED;
+		break;
+	case eSIR_MAC_DEVICE_RECOVERY:
+		reason = QCA_DISCONNECT_REASON_DEVICE_RECOVERY;
+		break;
+	case eSIR_MAC_KEY_TIMEOUT:
+		reason = QCA_DISCONNECT_REASON_KEY_TIMEOUT;
+		break;
+	case eSIR_MAC_OPER_CHANNEL_BAND_CHANGE:
+		reason = QCA_DISCONNECT_REASON_OPER_CHANNEL_BAND_CHANGE;
+		break;
+	case eSIR_MAC_IFACE_DOWN:
+		reason = QCA_DISCONNECT_REASON_IFACE_DOWN;
+		break;
+	case eSIR_MAC_PEER_XRETRY_FAIL:
+		reason = QCA_DISCONNECT_REASON_PEER_XRETRY_FAIL;
+		break;
+	case eSIR_MAC_PEER_INACTIVITY:
+		reason = QCA_DISCONNECT_REASON_PEER_INACTIVITY;
+		break;
+	case eSIR_MAC_SA_QUERY_TIMEOUT:
+		reason = QCA_DISCONNECT_REASON_SA_QUERY_TIMEOUT;
+		break;
+	case eSIR_MAC_CHANNEL_SWITCH_FAILED:
+		reason = QCA_DISCONNECT_REASON_CHANNEL_SWITCH_FAILURE;
+		break;
+	case eSIR_MAC_BEACON_MISSED:
+		reason = QCA_DISCONNECT_REASON_BEACON_MISS_FAILURE;
+		break;
+	case eSIR_MAC_USER_TRIGGERED_ROAM_FAILURE:
+		reason = QCA_DISCONNECT_REASON_USER_TRIGGERED;
+		break;
+	default:
+		hdd_debug("No QCA reason code for mac reason: %u",
+			  internal_reason);
+		/* Unspecified reason by default */
+	}
+
+	return reason;
+}
+
 /**
  * hdd_get_station_info() - send BSS information to supplicant
  * @hdd_ctx: pointer to hdd context
@@ -589,6 +666,8 @@ static int hdd_get_station_info(struct hdd_context *hdd_ctx,
 	uint8_t *tmp_hs20 = NULL;
 	uint32_t nl_buf_len;
 	struct hdd_station_ctx *hdd_sta_ctx;
+	enum qca_disconnect_reason_codes disconnect_reason =
+					QCA_DISCONNECT_REASON_UNSPECIFIED;
 
 	hdd_sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter);
 
@@ -603,7 +682,8 @@ static int hdd_get_station_info(struct hdd_context *hdd_ctx,
 		      sizeof(hdd_sta_ctx->cache_conn_info.txrate.nss) +
 		      sizeof(hdd_sta_ctx->cache_conn_info.roam_count) +
 		      sizeof(hdd_sta_ctx->cache_conn_info.last_auth_type) +
-		      sizeof(hdd_sta_ctx->cache_conn_info.dot11mode);
+		      sizeof(hdd_sta_ctx->cache_conn_info.dot11mode) +
+		      sizeof(adapter->last_disconnect_reason);
 	if (hdd_sta_ctx->cache_conn_info.conn_flag.vht_present)
 		nl_buf_len += sizeof(hdd_sta_ctx->cache_conn_info.vht_caps);
 	if (hdd_sta_ctx->cache_conn_info.conn_flag.ht_present)
@@ -671,6 +751,19 @@ static int hdd_get_station_info(struct hdd_context *hdd_ctx,
 			hdd_err("put fail");
 			goto fail;
 		}
+	/*
+	 * adapter->last_disconnect_reason maintains the reason code of type
+	 * enum eSirMacReasonCodes and internal reason codes are defined from
+	 * eSIR_MAC_REASON_PROP_START. Check if it is internal reason code and
+	 * convert it to the enum qca_disconnect_reason_codes.
+	 */
+	if (adapter->last_disconnect_reason >= eSIR_MAC_REASON_PROP_START)
+		disconnect_reason =
+		wlan_hdd_sir_mac_to_qca_reason(adapter->last_disconnect_reason);
+	if (nla_put_u32(skb, DISCONNECT_REASON, disconnect_reason)) {
+		hdd_err("Failed to put disconect reason");
+		goto fail;
+	}
 
 	return cfg80211_vendor_cmd_reply(skb);
 fail: