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f043922b24
Implement the maap state machine. Use maap for the destination address of talker streams.
70 lines
2.9 KiB
C
70 lines
2.9 KiB
C
/* AVB support
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*
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* Copyright © 2022 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef AVB_MAAP_H
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#define AVB_MAAP_H
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#include "packets.h"
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#include "internal.h"
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#define AVB_TSN_ETH 0x22f0
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#define AVB_MAAP_MAC { 0x91, 0xe0, 0xf0, 0x00, 0xff, 0x00 };
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#define AVB_MAAP_MESSAGE_TYPE_PROBE 1
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#define AVB_MAAP_MESSAGE_TYPE_DEFEND 2
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#define AVB_MAAP_MESSAGE_TYPE_ANNOUNCE 3
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struct avb_packet_maap {
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struct avb_packet_header hdr;
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uint64_t stream_id;
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uint8_t request_start[6];
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uint16_t request_count;
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uint8_t conflict_start[6];
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uint16_t conflict_count;
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} __attribute__ ((__packed__));
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#define AVB_PACKET_MAAP_SET_MESSAGE_TYPE(p,v) AVB_PACKET_SET_SUB1(&(p)->hdr, v)
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#define AVB_PACKET_MAAP_SET_MAAP_VERSION(p,v) AVB_PACKET_SET_SUB2(&(p)->hdr, v)
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#define AVB_PACKET_MAAP_SET_STREAM_ID(p,v) ((p)->stream_id = htobe64(v))
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#define AVB_PACKET_MAAP_SET_REQUEST_START(p,v) memcpy((p)->request_start, (v), 6)
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#define AVB_PACKET_MAAP_SET_REQUEST_COUNT(p,v) ((p)->request_count = htons(v))
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#define AVB_PACKET_MAAP_SET_CONFLICT_START(p,v) memcpy((p)->conflict_start, (v), 6)
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#define AVB_PACKET_MAAP_SET_CONFLICT_COUNT(p,v) ((p)->conflict_count = htons(v))
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#define AVB_PACKET_MAAP_GET_MESSAGE_TYPE(p) AVB_PACKET_GET_SUB1(&(p)->hdr)
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#define AVB_PACKET_MAAP_GET_MAAP_VERSION(p) AVB_PACKET_GET_SUB2(&(p)->hdr)
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#define AVB_PACKET_MAAP_GET_STREAM_ID(p) be64toh((p)->stream_id)
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#define AVB_PACKET_MAAP_GET_REQUEST_START(p) ((p)->request_start)
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#define AVB_PACKET_MAAP_GET_REQUEST_COUNT(p) ntohs((p)->request_count)
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#define AVB_PACKET_MAAP_GET_CONFLICT_START(p) ((p)->conflict_start)
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#define AVB_PACKET_MAAP_GET_CONFLICT_COUNT(p) ntohs((p)->conflict_count)
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struct avb_maap;
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struct avb_maap *avb_maap_register(struct server *server);
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int avb_maap_reserve(struct avb_maap *maap, uint32_t count);
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int avb_maap_get_address(struct avb_maap *maap, uint8_t addr[6], uint32_t index);
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#endif /* AVB_MAAP_H */
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