[PATCH iwl-next v3 09/13] virtchnl: support raw packet in protocol header

[Ahmed Zaki <ahmed.zaki@intel.com>]

From: Junfeng Guo <junfeng.guo@intel.com>

The patch extends existing virtchnl_proto_hdrs structure to allow VF
to pass a pair of buffers as packet data and mask that describe
a match pattern of a filter rule. Then the kernel PF driver is requested
to parse the pair of buffer and figure out low level hardware metadata
(ptype, profile, field vector.. ) to program the expected FDIR or RSS
rules.

Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
---
 include/linux/avf/virtchnl.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h
index 8e177b67e82f..4f78a65e33dc 100644
--- a/include/linux/avf/virtchnl.h
+++ b/include/linux/avf/virtchnl.h
@@ -1121,6 +1121,7 @@ enum virtchnl_vfr_states {
 };
 
 #define VIRTCHNL_MAX_NUM_PROTO_HDRS	32
+#define VIRTCHNL_MAX_SIZE_RAW_PACKET	1024
 #define PROTO_HDR_SHIFT			5
 #define PROTO_HDR_FIELD_START(proto_hdr_type) ((proto_hdr_type) << PROTO_HDR_SHIFT)
 #define PROTO_HDR_FIELD_MASK ((1UL << PROTO_HDR_SHIFT) - 1)
@@ -1266,13 +1267,22 @@ struct virtchnl_proto_hdrs {
 	u8 pad[3];
 	/**
 	 * specify where protocol header start from.
+	 * must be 0 when sending a raw packet request.
 	 * 0 - from the outer layer
 	 * 1 - from the first inner layer
 	 * 2 - from the second inner layer
 	 * ....
 	 **/
 	int count; /* the proto layers must < VIRTCHNL_MAX_NUM_PROTO_HDRS */
-	struct virtchnl_proto_hdr proto_hdr[VIRTCHNL_MAX_NUM_PROTO_HDRS];
+	union {
+		struct virtchnl_proto_hdr
+			proto_hdr[VIRTCHNL_MAX_NUM_PROTO_HDRS];
+		struct {
+			u16 pkt_len;
+			u8 spec[VIRTCHNL_MAX_SIZE_RAW_PACKET];
+			u8 mask[VIRTCHNL_MAX_SIZE_RAW_PACKET];
+		} raw;
+	};
 };
 
 VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);
-- 
2.43.0