From: Qi Zhang Date: Mon, 13 Apr 2020 09:32:54 +0000 (+0800) Subject: common/iavf: add virtual channel protocol header X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=485584826fcebccc81b137ac07a573ef718f10ed;p=dpdk.git common/iavf: add virtual channel protocol header To support advanced AVF's FDIR and RSS feature, we need to figure out what kind of data structure should be passed from VF to PF to describe an FDIR rule or RSS config rule. The common part of the requirement is we need a data structure to represent the input set selection of a rule's hash key. An input set selection is a group of fields be selected from one or more network protocol layers that could be identified as a specific flow. For example, select dst IP address from an IPv4 header combined with dst port from the TCP header as the input set for an IPv4/TCP flow. The patch adds a new data structure virtchnl_proto_hdrs to abstract a network protocol headers group which is composed of layers of network protocol header(virtchnl_proto_hdr). A protocol header contains a 32 bits mask (field_selector) to describe which fields are selected as input sets, as well as a header type (enum virtchnl_proto_hdr_type). Each bit is mapped to a field in enum virtchnl_proto_hdr_field guided by its header type. +------------+-----------+------------------------------+ | | Proto Hdr | Header Type A | | | +------------------------------+ | | | BIT 31 | ... | BIT 1 | BIT 0 | | |-----------+------------------------------+ |Proto Hdrs | Proto Hdr | Header Type B | | | +------------------------------+ | | | BIT 31 | ... | BIT 1 | BIT 0 | | |-----------+------------------------------+ | | Proto Hdr | Header Type C | | | +------------------------------+ | | | BIT 31 | ... | BIT 1 | BIT 0 | | |-----------+------------------------------+ | | .... | +-------------------------------------------------------+ All fields in enum virtchnl_proto_hdr_fields are grouped with header type and the value of the first field of a header type is always 32 aligned. enum proto_hdr_type { header_type_A = 0; header_type_B = 1; .... } enum proto_hdr_field { /* header type A */ header_A_field_0 = 0, header_A_field_1 = 1, header_A_field_2 = 2, header_A_field_3 = 3, /* header type B */ header_B_field_0 = 32, // = header_type_B << 5 header_B_field_0 = 33, header_B_field_0 = 34 header_B_field_0 = 35, .... }; So we have: proto_hdr_type = proto_hdr_field / 32 bit offset = proto_hdr_field % 32 To simply the protocol header's operations, couple help macros are added. For example, to select src IP and dst port as input set for an IPv4/UDP flow. we have: struct virtchnl_proto_hdr hdr[2]; VIRTCHNL_SET_PROTO_HDR_TYPE(&hdr[0], IPV4) VIRTCHNL_ADD_PROTO_HDR_FIELD(&hdr[0], IPV4, SRC) VIRTCHNL_SET_PROTO_HDR_TYPE(&hdr[1], UDP) VIRTCHNL_ADD_PROTO_HDR_FIELD(&hdr[1], UDP, DST) A protocol header also contains a byte array, this field should only be used by an FDIR rule and should be ignored by RSS. For an FDIR rule, the byte array is used to store the protocol header of a training package. The byte array must be network order. Signed-off-by: Jeff Guo Signed-off-by: Paul M Stillwell Jr Signed-off-by: Qi Zhang Acked-by: Beilei Xing --- diff --git a/drivers/common/iavf/virtchnl.h b/drivers/common/iavf/virtchnl.h index a8625d17ab..043948eb74 100644 --- a/drivers/common/iavf/virtchnl.h +++ b/drivers/common/iavf/virtchnl.h @@ -770,6 +770,162 @@ enum virtchnl_vfr_states { VIRTCHNL_VFR_VFACTIVE, }; +#define VIRTCHNL_MAX_NUM_PROTO_HDRS 32 +#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) + +/* VF use these macros to configure each protocol header. + * Specify which protocol headers and protocol header fields base on + * virtchnl_proto_hdr_type and virtchnl_proto_hdr_field. + * @param hdr: a struct of virtchnl_proto_hdr + * @param hdr_type: ETH/IPV4/TCP, etc + * @param field: SRC/DST/TEID/SPI, etc + */ +#define VIRTCHNL_ADD_PROTO_HDR_FIELD(hdr, field) \ + ((hdr)->field_selector |= BIT((field) & PROTO_HDR_FIELD_MASK)) +#define VIRTCHNL_DEL_PROTO_HDR_FIELD(hdr, field) \ + ((hdr)->field_selector &= ~BIT((field) & PROTO_HDR_FIELD_MASK)) +#define VIRTCHNL_TEST_PROTO_HDR_FIELD(hdr, val) \ + ((hdr)->field_selector & BIT((val) & PROTO_HDR_FIELD_MASK)) +#define VIRTCHNL_GET_PROTO_HDR_FIELD(hdr) ((hdr)->field_selector) + +#define VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, hdr_type, field) \ + (VIRTCHNL_ADD_PROTO_HDR_FIELD(hdr, \ + VIRTCHNL_PROTO_HDR_ ## hdr_type ## _ ## field)) +#define VIRTCHNL_DEL_PROTO_HDR_FIELD_BIT(hdr, hdr_type, field) \ + (VIRTCHNL_DEL_PROTO_HDR_FIELD(hdr, \ + VIRTCHNL_PROTO_HDR_ ## hdr_type ## _ ## field)) + +#define VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, hdr_type) \ + ((hdr)->type = VIRTCHNL_PROTO_HDR_ ## hdr_type) +#define VIRTCHNL_GET_PROTO_HDR_TYPE(hdr) \ + (((hdr)->type) >> PROTO_HDR_SHIFT) +#define VIRTCHNL_TEST_PROTO_HDR_TYPE(hdr, val) \ + ((hdr)->type == ((val) >> PROTO_HDR_SHIFT)) +#define VIRTCHNL_TEST_PROTO_HDR(hdr, val) \ + (VIRTCHNL_TEST_PROTO_HDR_TYPE(hdr, val) && \ + VIRTCHNL_TEST_PROTO_HDR_FIELD(hdr, val)) + +/* Protocol header type within a packet segment. A segment consists of one or + * more protocol headers that make up a logical group of protocol headers. Each + * logical group of protocol headers encapsulates or is encapsulated using/by + * tunneling or encapsulation protocols for network virtualization. + */ +enum virtchnl_proto_hdr_type { + VIRTCHNL_PROTO_HDR_NONE, + VIRTCHNL_PROTO_HDR_ETH, + VIRTCHNL_PROTO_HDR_S_VLAN, + VIRTCHNL_PROTO_HDR_C_VLAN, + VIRTCHNL_PROTO_HDR_IPV4, + VIRTCHNL_PROTO_HDR_IPV6, + VIRTCHNL_PROTO_HDR_TCP, + VIRTCHNL_PROTO_HDR_UDP, + VIRTCHNL_PROTO_HDR_SCTP, + VIRTCHNL_PROTO_HDR_GTPU_IP, + VIRTCHNL_PROTO_HDR_GTPU_EH, + VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_DWN, + VIRTCHNL_PROTO_HDR_GTPU_EH_PDU_UP, + VIRTCHNL_PROTO_HDR_PPPOE, + VIRTCHNL_PROTO_HDR_L2TPV3, + VIRTCHNL_PROTO_HDR_ESP, + VIRTCHNL_PROTO_HDR_AH, + VIRTCHNL_PROTO_HDR_PFCP, +}; + +/* Protocol header field within a protocol header. */ +enum virtchnl_proto_hdr_field { + /* ETHER */ + VIRTCHNL_PROTO_HDR_ETH_SRC = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_ETH), + VIRTCHNL_PROTO_HDR_ETH_DST, + VIRTCHNL_PROTO_HDR_ETH_ETHERTYPE, + /* S-VLAN */ + VIRTCHNL_PROTO_HDR_S_VLAN_ID = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_S_VLAN), + /* C-VLAN */ + VIRTCHNL_PROTO_HDR_C_VLAN_ID = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_C_VLAN), + /* IPV4 */ + VIRTCHNL_PROTO_HDR_IPV4_SRC = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_IPV4), + VIRTCHNL_PROTO_HDR_IPV4_DST, + VIRTCHNL_PROTO_HDR_IPV4_DSCP, + VIRTCHNL_PROTO_HDR_IPV4_TTL, + VIRTCHNL_PROTO_HDR_IPV4_PROT, + /* IPV6 */ + VIRTCHNL_PROTO_HDR_IPV6_SRC = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_IPV6), + VIRTCHNL_PROTO_HDR_IPV6_DST, + VIRTCHNL_PROTO_HDR_IPV6_TC, + VIRTCHNL_PROTO_HDR_IPV6_HOP_LIMIT, + VIRTCHNL_PROTO_HDR_IPV6_PROT, + /* TCP */ + VIRTCHNL_PROTO_HDR_TCP_SRC_PORT = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_TCP), + VIRTCHNL_PROTO_HDR_TCP_DST_PORT, + /* UDP */ + VIRTCHNL_PROTO_HDR_UDP_SRC_PORT = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_UDP), + VIRTCHNL_PROTO_HDR_UDP_DST_PORT, + /* SCTP */ + VIRTCHNL_PROTO_HDR_SCTP_SRC_PORT = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_SCTP), + VIRTCHNL_PROTO_HDR_SCTP_DST_PORT, + /* GTPU_IP */ + VIRTCHNL_PROTO_HDR_GTPU_IP_TEID = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_GTPU_IP), + /* GTPU_EH */ + VIRTCHNL_PROTO_HDR_GTPU_EH_PDU = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_GTPU_EH), + VIRTCHNL_PROTO_HDR_GTPU_EH_QFI, + /* PPPOE */ + VIRTCHNL_PROTO_HDR_PPPOE_SESS_ID = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_PPPOE), + /* L2TPV3 */ + VIRTCHNL_PROTO_HDR_L2TPV3_SESS_ID = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_L2TPV3), + /* ESP */ + VIRTCHNL_PROTO_HDR_ESP_SPI = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_ESP), + /* AH */ + VIRTCHNL_PROTO_HDR_AH_SPI = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_AH), + /* PFCP */ + VIRTCHNL_PROTO_HDR_PFCP_S_FIELD = + PROTO_HDR_FIELD_START(VIRTCHNL_PROTO_HDR_PFCP), + VIRTCHNL_PROTO_HDR_PFCP_SEID, +}; + +struct virtchnl_proto_hdr { + enum virtchnl_proto_hdr_type type; + u32 field_selector; /* a bit mask to select field for header type */ + u8 buffer[64]; + /** + * binary buffer in network order for specific header type. + * For example, if type = VIRTCHNL_PROTO_HDR_IPV4, a IPv4 + * header is expected to be copied into the buffer. + */ +}; + +VIRTCHNL_CHECK_STRUCT_LEN(72, virtchnl_proto_hdr); + +struct virtchnl_proto_hdrs { + u8 tunnel_level; + /** + * specify where protocol header start from. + * 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]; +}; + +VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs); + /** * virtchnl_vc_validate_vf_msg * @ver: Virtchnl version info