/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2019-2020 Microsoft Corporation
 *
 * PCAP Next Generation Capture File writer
 *
 * See: https://github.com/pcapng/pcapng/ for the file format.
 */

enum pcapng_block_types {
	PCAPNG_INTERFACE_BLOCK		= 1,
	PCAPNG_PACKET_BLOCK,		/* Obsolete */
	PCAPNG_SIMPLE_PACKET_BLOCK,
	PCAPNG_NAME_RESOLUTION_BLOCK,
	PCAPNG_INTERFACE_STATS_BLOCK,
	PCAPNG_ENHANCED_PACKET_BLOCK,

	PCAPNG_SECTION_BLOCK		= 0x0A0D0D0A,
};

struct pcapng_option {
	uint16_t code;
	uint16_t length;
	uint8_t data[];
};

#define PCAPNG_BYTE_ORDER_MAGIC 0x1A2B3C4D
#define PCAPNG_MAJOR_VERS 1
#define PCAPNG_MINOR_VERS 0

enum pcapng_opt {
	PCAPNG_OPT_END	= 0,
	PCAPNG_OPT_COMMENT = 1,
};

struct pcapng_section_header {
	uint32_t block_type;
	uint32_t block_length;
	uint32_t byte_order_magic;
	uint16_t major_version;
	uint16_t minor_version;
	uint64_t section_length;
};

enum pcapng_section_opt {
	PCAPNG_SHB_HARDWARE = 2,
	PCAPNG_SHB_OS	    = 3,
	PCAPNG_SHB_USERAPPL = 4,
};

struct pcapng_interface_block {
	uint32_t block_type;	/* 1 */
	uint32_t block_length;
	uint16_t link_type;
	uint16_t reserved;
	uint32_t snap_len;
};

enum pcapng_interface_options {
	PCAPNG_IFB_NAME	 = 2,
	PCAPNG_IFB_DESCRIPTION,
	PCAPNG_IFB_IPV4ADDR,
	PCAPNG_IFB_IPV6ADDR,
	PCAPNG_IFB_MACADDR,
	PCAPNG_IFB_EUIADDR,
	PCAPNG_IFB_SPEED,
	PCAPNG_IFB_TSRESOL,
	PCAPNG_IFB_TZONE,
	PCAPNG_IFB_FILTER,
	PCAPNG_IFB_OS,
	PCAPNG_IFB_FCSLEN,
	PCAPNG_IFB_TSOFFSET,
	PCAPNG_IFB_HARDWARE,
};

struct pcapng_enhance_packet_block {
	uint32_t block_type;	/* 6 */
	uint32_t block_length;
	uint32_t interface_id;
	uint32_t timestamp_hi;
	uint32_t timestamp_lo;
	uint32_t capture_length;
	uint32_t original_length;
};

/* Flags values */
#define PCAPNG_IFB_INBOUND   0b01
#define PCAPNG_IFB_OUTBOUND  0b10

enum pcapng_epb_options {
	PCAPNG_EPB_FLAGS = 2,
	PCAPNG_EPB_HASH,
	PCAPNG_EPB_DROPCOUNT,
	PCAPNG_EPB_PACKETID,
	PCAPNG_EPB_QUEUE,
	PCAPNG_EPB_VERDICT,
};

enum pcapng_epb_hash {
	PCAPNG_HASH_2COMP = 0,
	PCAPNG_HASH_XOR,
	PCAPNG_HASH_CRC32,
	PCAPNG_HASH_MD5,
	PCAPNG_HASH_SHA1,
	PCAPNG_HASH_TOEPLITZ,
};

struct pcapng_simple_packet {
	uint32_t block_type;	/* 3 */
	uint32_t block_length;
	uint32_t packet_length;
};

struct pcapng_statistics {
	uint32_t block_type;	/* 5 */
	uint32_t block_length;
	uint32_t interface_id;
	uint32_t timestamp_hi;
	uint32_t timestamp_lo;
};

enum pcapng_isb_options {
	PCAPNG_ISB_STARTTIME = 2,
	PCAPNG_ISB_ENDTIME,
	PCAPNG_ISB_IFRECV,
	PCAPNG_ISB_IFDROP,
	PCAPNG_ISB_FILTERACCEPT,
	PCAPNG_ISB_OSDROP,
	PCAPNG_ISB_USRDELIV,
};