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/* 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_MRP_H
#define AVB_MRP_H
#include "packets.h"
#include "internal.h"
#define AVB_MRP_PROTOCOL_VERSION 0
struct avb_packet_mrp {
struct avb_ethernet_header eth;
uint8_t version;
} __attribute__ ((__packed__));
struct avb_packet_mrp_hdr {
uint8_t attribute_type;
uint8_t attribute_length;
} __attribute__ ((__packed__));
struct avb_packet_mrp_vector {
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned lva:3;
unsigned nv1:5;
#elif __BYTE_ORDER == __LITTLE_ENDIAN
unsigned nv1:5;
unsigned lva:3;
#endif
uint8_t nv2;
uint8_t first_value[0];
} __attribute__ ((__packed__));
#define AVB_MRP_VECTOR_SET_NUM_VALUES(a,v) ((a)->nv1 = ((v) >> 8),(a)->nv2 = (v))
#define AVB_MRP_VECTOR_GET_NUM_VALUES(a) ((a)->nv1 << 8 | (a)->nv2)
struct avb_packet_mrp_footer {
uint16_t end_mark;
} __attribute__ ((__packed__));
/* applicant states */
#define AVB_MRP_VO 0 /* Very anxious Observer */
#define AVB_MRP_VP 1 /* Very anxious Passive */
#define AVB_MRP_VN 2 /* Very anxious New */
#define AVB_MRP_AN 3 /* Anxious New */
#define AVB_MRP_AA 4 /* Anxious Active */
#define AVB_MRP_QA 5 /* Quiet Active */
#define AVB_MRP_LA 6 /* Leaving Active */
#define AVB_MRP_AO 7 /* Anxious Observer */
#define AVB_MRP_QO 8 /* Quiet Observer */
#define AVB_MRP_AP 9 /* Anxious Passive */
#define AVB_MRP_QP 10 /* Quiet Passive */
#define AVB_MRP_LO 11 /* Leaving Observer */
/* registrar states */
#define AVB_MRP_IN 16
#define AVB_MRP_LV 17
#define AVB_MRP_MT 18
/* events */
#define AVB_MRP_EVENT_BEGIN 0
#define AVB_MRP_EVENT_NEW 1
#define AVB_MRP_EVENT_JOIN 2
#define AVB_MRP_EVENT_LV 3
#define AVB_MRP_EVENT_TX 4
#define AVB_MRP_EVENT_TX_LVA 5
#define AVB_MRP_EVENT_TX_LVAF 6
#define AVB_MRP_EVENT_RX_NEW 7
#define AVB_MRP_EVENT_RX_JOININ 8
#define AVB_MRP_EVENT_RX_IN 9
#define AVB_MRP_EVENT_RX_JOINMT 10
#define AVB_MRP_EVENT_RX_MT 11
#define AVB_MRP_EVENT_RX_LV 12
#define AVB_MRP_EVENT_RX_LVA 13
#define AVB_MRP_EVENT_FLUSH 14
#define AVB_MRP_EVENT_REDECLARE 15
#define AVB_MRP_EVENT_PERIODIC 16
#define AVB_MRP_EVENT_LV_TIMER 17
#define AVB_MRP_EVENT_LVA_TIMER 18
/* attribute events */
#define AVB_MRP_ATTRIBUTE_EVENT_NEW 0
#define AVB_MRP_ATTRIBUTE_EVENT_JOININ 1
#define AVB_MRP_ATTRIBUTE_EVENT_IN 2
#define AVB_MRP_ATTRIBUTE_EVENT_JOINMT 3
#define AVB_MRP_ATTRIBUTE_EVENT_MT 4
#define AVB_MRP_ATTRIBUTE_EVENT_LV 5
#define AVB_MRP_SEND_NEW 1
#define AVB_MRP_SEND_JOININ 2
#define AVB_MRP_SEND_IN 3
#define AVB_MRP_SEND_JOINMT 4
#define AVB_MRP_SEND_MT 5
#define AVB_MRP_SEND_LV 6
#define AVB_MRP_NOTIFY_NEW 1
#define AVB_MRP_NOTIFY_JOIN 2
#define AVB_MRP_NOTIFY_LEAVE 3
const char *avb_mrp_notify_name(uint8_t notify);
const char *avb_mrp_send_name(uint8_t send);
struct avb_mrp_attribute {
uint8_t pending_send;
void *user_data;
};
struct avb_mrp_attribute_events {
#define AVB_VERSION_MRP_ATTRIBUTE_EVENTS 0
uint32_t version;
void (*notify) (void *data, uint64_t now, uint8_t notify);
};
struct avb_mrp_attribute *avb_mrp_attribute_new(struct avb_mrp *mrp,
size_t user_size);
void avb_mrp_attribute_destroy(struct avb_mrp_attribute *attr);
void avb_mrp_attribute_update_state(struct avb_mrp_attribute *attr, uint64_t now, int event);
void avb_mrp_attribute_rx_event(struct avb_mrp_attribute *attr, uint64_t now, uint8_t event);
void avb_mrp_attribute_begin(struct avb_mrp_attribute *attr, uint64_t now);
void avb_mrp_attribute_join(struct avb_mrp_attribute *attr, uint64_t now, bool is_new);
void avb_mrp_attribute_leave(struct avb_mrp_attribute *attr, uint64_t now);
void avb_mrp_attribute_add_listener(struct avb_mrp_attribute *attr, struct spa_hook *listener,
const struct avb_mrp_attribute_events *events, void *data);
struct avb_mrp_parse_info {
#define AVB_VERSION_MRP_PARSE_INFO 0
uint32_t version;
bool (*check_header) (void *data, const void *hdr, size_t *hdr_size, bool *has_params);
int (*attr_event) (void *data, uint64_t now, uint8_t attribute_type, uint8_t event);
int (*process) (void *data, uint64_t now, uint8_t attribute_type, const void *value,
uint8_t event, uint8_t param, int index);
};
int avb_mrp_parse_packet(struct avb_mrp *mrp, uint64_t now, const void *pkt, int size,
const struct avb_mrp_parse_info *cb, void *data);
struct avb_mrp_events {
#define AVB_VERSION_MRP_EVENTS 0
uint32_t version;
void (*event) (void *data, uint64_t now, uint8_t event);
void (*notify) (void *data, uint64_t now, struct avb_mrp_attribute *attr, uint8_t notify);
};
struct avb_mrp *avb_mrp_new(struct server *server);
void avb_mrp_destroy(struct avb_mrp *mrp);
void avb_mrp_add_listener(struct avb_mrp *mrp, struct spa_hook *listener,
const struct avb_mrp_events *events, void *data);
#endif /* AVB_MRP_H */
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