cxgb3: add control to access embedded images

Update contol path between cxgb3 and ULP modules (iWARP, iSCSI)
to provide access to firware and protocol engine info.
Signed-off-by: NDivy Le Ray <divy@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/cxgb3/cxgb3_ctl_defs.h

@@ -58,6 +58,8 @@ enum {
 
 	GET_RX_PAGE_INFO	= 50,
 	GET_ISCSI_IPV4ADDR	= 51,
+
+	GET_EMBEDDED_INFO	= 70,
 };
 
 /*
@@ -176,4 +178,12 @@ struct ofld_page_info {
 	unsigned int page_size;  /* Page size, should be a power of 2 */
 	unsigned int num;        /* Number of pages */
 };
+
+/*
+ * Structure used to get firmware and protocol engine versions.
+ */
+struct ch_embedded_info {
+	u32 fw_vers;
+	u32 tp_vers;
+};
 #endif				/* _CXGB3_OFFLOAD_CTL_DEFS_H */

drivers/net/cxgb3/cxgb3_offload.c

@@ -438,6 +438,15 @@ static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data)
 		p->ipv4addr = pi->iscsi_ipv4addr;
 		break;
 	}
+	case GET_EMBEDDED_INFO: {
+		struct ch_embedded_info *e = data;
+
+		spin_lock(&adapter->stats_lock);
+		t3_get_fw_version(adapter, &e->fw_vers);
+		t3_get_tp_version(adapter, &e->tp_vers);
+		spin_unlock(&adapter->stats_lock);
+		break;
+	}
 	default:
 		return -EOPNOTSUPP;
 	}