diff options
Diffstat (limited to 'fpga/usrp3/lib/rfnoc/xport_sv/eth_constants.vh')
| -rw-r--r-- | fpga/usrp3/lib/rfnoc/xport_sv/eth_constants.vh | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/rfnoc/xport_sv/eth_constants.vh b/fpga/usrp3/lib/rfnoc/xport_sv/eth_constants.vh new file mode 100644 index 000000000..371b46cf5 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/xport_sv/eth_constants.vh @@ -0,0 +1,76 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: eth_constants (Header File) +// +// Description: +// Constants for ethernet + +//--------------------------------------- +// Ethernet constants +//--------------------------------------- +localparam [47:0] ETH_ADDR_BCAST = {48{1'b1}}; +localparam [15:0] ETH_TYPE_IPV4 = 16'h0800; +localparam [7:0] IPV4_PROTO_UDP = 8'h11; +localparam [7:0] IPV4_LEN5 = 8'h45; + +// tUser conventions +localparam BYTES_MSB = ENET_USER_W-2; +localparam ERROR_BIT = ENET_USER_W-1; +localparam SOF_BIT = ENET_USER_W-1; + +//--------------------------------------- +// Ethernet byte positions +//--------------------------------------- +// Bytes 7-0------------------------- +// | DstMAC_HI (16) | Preamble (48) | +// ---------------------------------- +localparam PREAMBLE_BYTE = 0; +localparam PREAMBLE_END = 5; +localparam ETH_HDR_BYTE = 0; +localparam DST_MAC_BYTE = ETH_HDR_BYTE+0; +// Bytes 15-8------------------------- +// | SrcMAC_HI (32) | DstMAC_LO (32) | +// ----------------------------------- +localparam SRC_MAC_BYTE = ETH_HDR_BYTE+6; +// Bytes 23-16--------------------------------------- +// | IPv4_Line0 (32)| EthType (16) | SrcMAC_LO (16) | +// -------------------------------------------------- +localparam ETH_TYPE_BYTE = ETH_HDR_BYTE+12; +localparam ETH_PAYLOAD_BYTE = ETH_HDR_BYTE+14; +// Bytes 31-24-------------------------- +// | IPv4_Line2 (32) | IPv4_Line1 (32) | +// ------------------------------------- +localparam IPV4_HDR_BYTE = ETH_PAYLOAD_BYTE; +localparam IP_VERSION_BYTE = IPV4_HDR_BYTE+0; +localparam IP_DSCP_BYTE = IPV4_HDR_BYTE+1; +localparam IP_LENGTH_BYTE = IPV4_HDR_BYTE+2; +localparam IP_ID_BYTE = IPV4_HDR_BYTE+4; +localparam IP_FRAG_BYTE = IPV4_HDR_BYTE+6; +localparam IP_TTL_BYTE = IPV4_HDR_BYTE+8; +localparam PROTOCOL_BYTE = IPV4_HDR_BYTE+9; +localparam IP_CHECKSUM_BYTE = IPV4_HDR_BYTE+10; +// Bytes 39-32------------------------ +// | IPDstAddr (32) | IPSrcAddr (32) | +// ----------------------------------- +localparam SRC_IP_BYTE = IPV4_HDR_BYTE+12; +localparam DST_IP_BYTE = IPV4_HDR_BYTE+16; +localparam IPV4_PAYLOAD_BYTE = IPV4_HDR_BYTE+20; +// Bytes 48-40------------------------------------------------ +// | Chksum (16) | Length (16) | DstPort (16) | SrcPort (16) | +// ----------------------------------------------------------- +localparam UDP_HDR_BYTE = IPV4_PAYLOAD_BYTE; +localparam SRC_PORT_BYTE = UDP_HDR_BYTE+0; +localparam DST_PORT_BYTE = UDP_HDR_BYTE+2; +localparam UDP_LENGTH_BYTE = UDP_HDR_BYTE+4; +localparam UDP_CHECKSUM_BYTE = UDP_HDR_BYTE+6; +localparam UDP_END = UDP_CHECKSUM_BYTE+1; // last byte in the UDP header + +localparam MIN_PACKET_SIZE_BYTE = 63; +//--------------------------------------- +// CHDR_BYTE_POSITION +//--------------------------------------- +localparam CHDR_HDR_BYTE = 0; +localparam CHDR_LENGTH_BYTE = CHDR_HDR_BYTE+2; |