common/iavf: support VLAN offload by DCF

Add new opcode VIRTCHNL_OP_DCF_VLAN_OFFLOAD to set VLAN offload
by DCF, the virtchnl message includes:
1. A valid target VF
2. Type of VLAN to be supported: outer or inner
3. Ethertype of the VLAN (either 0x8100 or 0x88A8 or 0x9100)
4. VLAN insert settings
   a). No insert offload, VLAN ID in the packet (default)
   b). Offload via transmit descriptor
   c). Insert as a port VLAN (via VSI)
5. VLAN strip settings
   a). Strip (and discard)
   b). Strip and place in descriptor
   c). No Strip
6. VLAN ID for the target VF

Signed-off-by: Qiming Yang <qiming.yang@intel.com>
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/common/iavf/virtchnl.h b/drivers/common/iavf/virtchnl.h
index c58a16d..7e62ae6 100644 (file)
--- a/drivers/common/iavf/virtchnl.h
+++ b/drivers/common/iavf/virtchnl.h
@@ -128,7 +128,8 @@ enum virtchnl_ops {
        VIRTCHNL_OP_DISABLE_CHANNELS = 31,
        VIRTCHNL_OP_ADD_CLOUD_FILTER = 32,
        VIRTCHNL_OP_DEL_CLOUD_FILTER = 33,
-       /* opcodes 34, 35, 36, 37 and 38 are reserved */
+       /* opcodes 34, 35, 36, and 37 are reserved */
+       VIRTCHNL_OP_DCF_VLAN_OFFLOAD = 38,
        VIRTCHNL_OP_DCF_CMD_DESC = 39,
        VIRTCHNL_OP_DCF_CMD_BUFF = 40,
        VIRTCHNL_OP_DCF_DISABLE = 41,
@@ -1217,6 +1218,38 @@ struct virtchnl_pkg_info {
 
 VIRTCHNL_CHECK_STRUCT_LEN(48, virtchnl_pkg_info);
 
+/* VIRTCHNL_OP_DCF_VLAN_OFFLOAD
+ * DCF negotiates the VIRTCHNL_VF_OFFLOAD_VLAN_V2 capability firstly to get
+ * the double VLAN configuration, then DCF sends this message to configure the
+ * outer or inner VLAN offloads (insertion and strip) for the target VF.
+ */
+struct virtchnl_dcf_vlan_offload {
+       u16 vf_id;
+       u16 tpid;
+       u16 vlan_flags;
+#define VIRTCHNL_DCF_VLAN_TYPE_S               0
+#define VIRTCHNL_DCF_VLAN_TYPE_M               \
+                       (0x1 << VIRTCHNL_DCF_VLAN_TYPE_S)
+#define VIRTCHNL_DCF_VLAN_TYPE_INNER           0x0
+#define VIRTCHNL_DCF_VLAN_TYPE_OUTER           0x1
+#define VIRTCHNL_DCF_VLAN_INSERT_MODE_S                1
+#define VIRTCHNL_DCF_VLAN_INSERT_MODE_M        \
+                       (0x7 << VIRTCHNL_DCF_VLAN_INSERT_MODE_S)
+#define VIRTCHNL_DCF_VLAN_INSERT_DISABLE       0x1
+#define VIRTCHNL_DCF_VLAN_INSERT_PORT_BASED    0x2
+#define VIRTCHNL_DCF_VLAN_INSERT_VIA_TX_DESC   0x3
+#define VIRTCHNL_DCF_VLAN_STRIP_MODE_S         4
+#define VIRTCHNL_DCF_VLAN_STRIP_MODE_M         \
+                       (0x7 << VIRTCHNL_DCF_VLAN_STRIP_MODE_S)
+#define VIRTCHNL_DCF_VLAN_STRIP_DISABLE                0x1
+#define VIRTCHNL_DCF_VLAN_STRIP_ONLY           0x2
+#define VIRTCHNL_DCF_VLAN_STRIP_INTO_RX_DESC   0x3
+       u16 vlan_id;
+       u16 pad[4];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_dcf_vlan_offload);
+
 struct virtchnl_supported_rxdids {
        u64 supported_rxdids;
 };
@@ -1932,6 +1965,9 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
        case VIRTCHNL_OP_DEL_CLOUD_FILTER:
                valid_len = sizeof(struct virtchnl_filter);
                break;
+       case VIRTCHNL_OP_DCF_VLAN_OFFLOAD:
+               valid_len = sizeof(struct virtchnl_dcf_vlan_offload);
+               break;
        case VIRTCHNL_OP_DCF_CMD_DESC:
        case VIRTCHNL_OP_DCF_CMD_BUFF:
                /* These two opcodes are specific to handle the AdminQ command,