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.
INTERNAL ONLY: This is requirement from DPDK to support Protocol Agnostic Flow Offloading(*1). Previously we have integrated the Parser Library(*2) into DPDK and enabled a raw packet based FDIR and RSS support in DPDK PF driver(*3,*4), to enable the same feature for AVF driver, we need Virtual Channel to support raw packet filter rule passing. [1] https://wiki.ith.intel.com/display/NPGCVL/Protocol+Agnostic+Flow+Offloading [2] http://patchwork.dpdk.org/project/dpdk/list/?series=19057&archive=both&state=* [3] http://patchwork.dpdk.org/project/dpdk/list/?series=20254&state=%2A&archive=both [4] http://patchwork.dpdk.org/project/dpdk/list/?series=20291&state=%2A&archive=both Signed-off-by: Qi Zhang <qi.z.zh...@intel.com> Signed-off-by: Junfeng Guo <junfeng....@intel.com> --- drivers/common/iavf/virtchnl.h | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/common/iavf/virtchnl.h b/drivers/common/iavf/virtchnl.h index 3e44eca7d8..3975229545 100644 --- a/drivers/common/iavf/virtchnl.h +++ b/drivers/common/iavf/virtchnl.h @@ -1482,6 +1482,7 @@ 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) @@ -1676,14 +1677,25 @@ VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_proto_hdr); struct virtchnl_proto_hdrs { u8 tunnel_level; /** - * specify where protocol header start from. + * 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]; + */ + int count; + /** + * number of proto layers, must < VIRTCHNL_MAX_NUM_PROTO_HDRS + * must be 0 for a raw packet request. + */ + 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); -- 2.25.1
