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/* Spa AVB support
*
* Copyright © 2022 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef AVB_PACKETS_H
#define AVB_PACKETS_H
#include <arpa/inet.h>
#define AVB_SUBTYPE_61883_IIDC 0x00
#define AVB_SUBTYPE_MMA_STREAM 0x01
#define AVB_SUBTYPE_AAF 0x02
#define AVB_SUBTYPE_CVF 0x03
#define AVB_SUBTYPE_CRF 0x04
#define AVB_SUBTYPE_TSCF 0x05
#define AVB_SUBTYPE_SVF 0x06
#define AVB_SUBTYPE_RVF 0x07
#define AVB_SUBTYPE_AEF_CONTINUOUS 0x6E
#define AVB_SUBTYPE_VSF_STREAM 0x6F
#define AVB_SUBTYPE_EF_STREAM 0x7F
#define AVB_SUBTYPE_NTSCF 0x82
#define AVB_SUBTYPE_ESCF 0xEC
#define AVB_SUBTYPE_EECF 0xED
#define AVB_SUBTYPE_AEF_DISCRETE 0xEE
#define AVB_SUBTYPE_ADP 0xFA
#define AVB_SUBTYPE_AECP 0xFB
#define AVB_SUBTYPE_ACMP 0xFC
#define AVB_SUBTYPE_MAAP 0xFE
#define AVB_SUBTYPE_EF_CONTROL 0xFF
struct avb_ethernet_header {
uint8_t dest[6];
uint8_t src[6];
uint16_t type;
} __attribute__ ((__packed__));
struct avb_frame_header {
uint8_t dest[6];
uint8_t src[6];
uint16_t type; /* 802.1Q Virtual Lan 0x8100 */
uint16_t prio_cfi_id;
uint16_t etype;
} __attribute__ ((__packed__));
struct avb_packet_header {
uint8_t subtype;
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned sv:1; /* stream_id valid */
unsigned version:3;
unsigned subtype_data1:4;
unsigned subtype_data2:5;
unsigned len1:3;
#elif __BYTE_ORDER == __LITTLE_ENDIAN
unsigned subtype_data1:4;
unsigned version:3;
unsigned sv:1;
unsigned len1:3;
unsigned subtype_data2:5;
#elif
#error "Unknown byte order"
#endif
uint8_t len2:8;
} __attribute__ ((__packed__));
#define AVB_PACKET_SET_SUBTYPE(p,v) ((p)->subtype = (v))
#define AVB_PACKET_SET_SV(p,v) ((p)->sv = (v))
#define AVB_PACKET_SET_VERSION(p,v) ((p)->version = (v))
#define AVB_PACKET_SET_SUB1(p,v) ((p)->subtype_data1 = (v))
#define AVB_PACKET_SET_SUB2(p,v) ((p)->subtype_data2 = (v))
#define AVB_PACKET_SET_LENGTH(p,v) ((p)->len1 = ((v) >> 8),(p)->len2 = (v))
#define AVB_PACKET_GET_SUBTYPE(p) ((p)->subtype)
#define AVB_PACKET_GET_SV(p) ((p)->sv)
#define AVB_PACKET_GET_VERSION(p) ((p)->version)
#define AVB_PACKET_GET_SUB1(p) ((p)->subtype_data1)
#define AVB_PACKET_GET_SUB2(p) ((p)->subtype_data2)
#define AVB_PACKET_GET_LENGTH(p) ((p)->len1 << 8 | (p)->len2)
#endif /* AVB_PACKETS_H */
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