mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-10 13:30:05 -05:00
avb: avbtp -> avb
This commit is contained in:
Wim Taymans
parent
d5b4c12684
commit
773bd610aa
39 changed files with 1975 additions and 2108 deletions
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@ -1,439 +0,0 @@
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/* 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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#include <spa/utils/json.h>
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#include <spa/debug/mem.h>
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#include <pipewire/pipewire.h>
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#include "acmp.h"
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#include "msrp.h"
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#include "internal.h"
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static const uint8_t mac[6] = AVB_BROADCAST_MAC;
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struct pending {
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struct spa_list link;
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uint64_t last_time;
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uint64_t timeout;
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uint16_t old_sequence_id;
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uint16_t sequence_id;
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uint16_t retry;
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size_t size;
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void *ptr;
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};
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struct acmp {
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struct server *server;
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struct spa_hook server_listener;
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#define PENDING_TALKER 0
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#define PENDING_LISTENER 1
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#define PENDING_CONTROLLER 2
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struct spa_list pending[3];
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uint16_t sequence_id[3];
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struct avbtp_msrp_attribute *listener_attr;
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struct avbtp_msrp_attribute *talker_attr;
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};
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static void *pending_new(struct acmp *acmp, uint32_t type, uint64_t now, uint32_t timeout_ms,
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const struct avbtp_packet_acmp *m, size_t size)
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{
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struct pending *p;
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struct avbtp_packet_acmp *pm;
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p = calloc(1, sizeof(*p) + size);
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if (p == NULL)
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return NULL;
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p->last_time = now;
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p->timeout = timeout_ms * SPA_NSEC_PER_MSEC;
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p->old_sequence_id = ntohs(m->sequence_id);
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p->sequence_id = acmp->sequence_id[type]++;
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p->size = size;
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p->ptr = SPA_PTROFF(p, sizeof(*p), void);
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memcpy(p->ptr, m, size);
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pm = p->ptr;
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pm->sequence_id = htons(p->sequence_id);
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spa_list_append(&acmp->pending[type], &p->link);
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return p->ptr;
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}
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static struct pending *pending_find(struct acmp *acmp, uint32_t type, uint16_t sequence_id)
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{
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struct pending *p;
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spa_list_for_each(p, &acmp->pending[type], link)
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if (p->sequence_id == sequence_id)
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return p;
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return NULL;
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}
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static void pending_free(struct acmp *acmp, struct pending *p)
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{
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spa_list_remove(&p->link);
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free(p);
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}
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struct msg_info {
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uint16_t type;
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const char *name;
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int (*handle) (struct acmp *acmp, uint64_t now, const void *m, int len);
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};
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static int reply_not_supported(struct acmp *acmp, const void *m, int len)
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{
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struct server *server = acmp->server;
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uint8_t buf[len];
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struct avbtp_packet_acmp *reply = (struct avbtp_packet_acmp*)buf;
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memcpy(reply, m, len);
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AVBTP_PACKET_ACMP_SET_STATUS(reply, AVBTP_ACMP_STATUS_NOT_SUPPORTED);
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return avbtp_server_send_packet(server, reply->hdr.eth.src,
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AVB_TSN_ETH, reply, len);
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}
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static int retry_pending(struct acmp *acmp, uint64_t now, struct pending *p)
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{
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struct server *server = acmp->server;
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struct avbtp_packet_acmp *cmd = p->ptr;
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p->retry++;
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p->last_time = now;
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return avbtp_server_send_packet(server, cmd->hdr.eth.dest,
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AVB_TSN_ETH, cmd, p->size);
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}
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static int handle_connect_tx_command(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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struct server *server = acmp->server;
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uint8_t buf[len];
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const struct avbtp_packet_acmp *p = m;
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struct avbtp_packet_acmp *reply = (struct avbtp_packet_acmp*)buf;
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if (be64toh(p->talker_guid) != server->entity_id)
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return 0;
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memcpy(reply, m, len);
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AVBTP_PACKET_ACMP_SET_MESSAGE_TYPE(reply, AVBTP_ACMP_MESSAGE_TYPE_CONNECT_TX_RESPONSE);
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AVBTP_PACKET_ACMP_SET_STATUS(reply, AVBTP_ACMP_STATUS_SUCCESS);
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return avbtp_server_send_packet(server, reply->hdr.eth.dest,
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AVB_TSN_ETH, reply, len);
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}
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static int handle_connect_tx_response(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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struct server *server = acmp->server;
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const struct avbtp_packet_acmp *resp = m;
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struct avbtp_packet_acmp *reply;
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struct pending *pending;
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uint16_t sequence_id;
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int res;
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if (be64toh(resp->listener_guid) != server->entity_id)
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return 0;
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sequence_id = ntohs(resp->sequence_id);
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pending = pending_find(acmp, PENDING_TALKER, sequence_id);
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if (pending == NULL)
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return 0;
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reply = pending->ptr;
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memcpy(reply, resp, SPA_MIN((int)pending->size, len));
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reply->sequence_id = htons(pending->old_sequence_id);
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AVBTP_PACKET_ACMP_SET_MESSAGE_TYPE(reply, AVBTP_ACMP_MESSAGE_TYPE_CONNECT_RX_RESPONSE);
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acmp->listener_attr->attr.listener.stream_id = reply->stream_id;
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acmp->listener_attr->param = AVBTP_MSRP_LISTENER_PARAM_READY;
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avbtp_mrp_mad_begin(server->mrp, now, acmp->listener_attr->mrp);
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avbtp_mrp_mad_join(server->mrp, now, acmp->listener_attr->mrp, true);
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acmp->talker_attr->attr.talker.stream_id = reply->stream_id;
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avbtp_mrp_mad_begin(server->mrp, now, acmp->talker_attr->mrp);
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res = avbtp_server_send_packet(server, reply->hdr.eth.dest,
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AVB_TSN_ETH, reply, pending->size);
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pending_free(acmp, pending);
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return res;
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}
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static int handle_disconnect_tx_command(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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struct server *server = acmp->server;
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uint8_t buf[len];
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const struct avbtp_packet_acmp *p = m;
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struct avbtp_packet_acmp *reply = (struct avbtp_packet_acmp*)buf;
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if (be64toh(p->talker_guid) != server->entity_id)
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return 0;
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memcpy(reply, m, len);
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AVBTP_PACKET_ACMP_SET_MESSAGE_TYPE(reply, AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_TX_RESPONSE);
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AVBTP_PACKET_ACMP_SET_STATUS(reply, AVBTP_ACMP_STATUS_SUCCESS);
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return avbtp_server_send_packet(server, reply->hdr.eth.dest,
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AVB_TSN_ETH, reply, len);
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}
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static int handle_disconnect_tx_response(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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struct server *server = acmp->server;
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const struct avbtp_packet_acmp *resp = m;
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struct avbtp_packet_acmp *reply;
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struct pending *pending;
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uint16_t sequence_id;
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int res;
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if (be64toh(resp->listener_guid) != server->entity_id)
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return 0;
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sequence_id = ntohs(resp->sequence_id);
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pending = pending_find(acmp, PENDING_TALKER, sequence_id);
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if (pending == NULL)
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return 0;
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reply = pending->ptr;
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memcpy(reply, resp, SPA_MIN((int)pending->size, len));
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reply->sequence_id = htons(pending->old_sequence_id);
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AVBTP_PACKET_ACMP_SET_MESSAGE_TYPE(reply, AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_RX_RESPONSE);
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avbtp_mrp_mad_leave(server->mrp, now, acmp->listener_attr->mrp);
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res = avbtp_server_send_packet(server, reply->hdr.eth.dest,
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AVB_TSN_ETH, reply, pending->size);
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pending_free(acmp, pending);
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return res;
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}
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static int handle_connect_rx_command(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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struct server *server = acmp->server;
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const struct avbtp_packet_acmp *p = m;
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struct avbtp_packet_acmp *cmd;
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if (be64toh(p->listener_guid) != server->entity_id)
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return 0;
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cmd = pending_new(acmp, PENDING_TALKER, now,
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AVBTP_ACMP_TIMEOUT_CONNECT_TX_COMMAND_MS, m, len);
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if (cmd == NULL)
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return -errno;
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AVBTP_PACKET_ACMP_SET_MESSAGE_TYPE(cmd, AVBTP_ACMP_MESSAGE_TYPE_CONNECT_TX_COMMAND);
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AVBTP_PACKET_ACMP_SET_STATUS(cmd, AVBTP_ACMP_STATUS_SUCCESS);
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return avbtp_server_send_packet(server, cmd->hdr.eth.dest,
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AVB_TSN_ETH, cmd, len);
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}
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static int handle_connect_rx_response(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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return 0;
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}
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static int handle_disconnect_rx_command(struct acmp *acmp, uint64_t now, const void *m, int len)
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{
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struct server *server = acmp->server;
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const struct avbtp_packet_acmp *p = m;
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struct avbtp_packet_acmp *cmd;
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if (be64toh(p->listener_guid) != server->entity_id)
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return 0;
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cmd = pending_new(acmp, PENDING_TALKER, now,
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AVBTP_ACMP_TIMEOUT_DISCONNECT_TX_COMMAND_MS, m, len);
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if (cmd == NULL)
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return -errno;
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AVBTP_PACKET_ACMP_SET_MESSAGE_TYPE(cmd, AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_TX_COMMAND);
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AVBTP_PACKET_ACMP_SET_STATUS(cmd, AVBTP_ACMP_STATUS_SUCCESS);
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return avbtp_server_send_packet(server, cmd->hdr.eth.dest,
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AVB_TSN_ETH, cmd, len);
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}
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static int handle_disconnect_rx_response(struct acmp *acmp, uint64_t now, const void *p, int len)
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{
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return 0;
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}
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static const struct msg_info msg_info[] = {
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{ AVBTP_ACMP_MESSAGE_TYPE_CONNECT_TX_COMMAND, "connect-tx-command", handle_connect_tx_command, },
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{ AVBTP_ACMP_MESSAGE_TYPE_CONNECT_TX_RESPONSE, "connect-tx-response", handle_connect_tx_response, },
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{ AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_TX_COMMAND, "disconnect-tx-command", handle_disconnect_tx_command, },
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{ AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_TX_RESPONSE, "disconnect-tx-response", handle_disconnect_tx_response, },
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{ AVBTP_ACMP_MESSAGE_TYPE_GET_TX_STATE_COMMAND, "get-tx-state-command", NULL, },
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{ AVBTP_ACMP_MESSAGE_TYPE_GET_TX_STATE_RESPONSE, "get-tx-state-response", NULL, },
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{ AVBTP_ACMP_MESSAGE_TYPE_CONNECT_RX_COMMAND, "connect-rx-command", handle_connect_rx_command, },
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{ AVBTP_ACMP_MESSAGE_TYPE_CONNECT_RX_RESPONSE, "connect-rx-response", handle_connect_rx_response, },
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{ AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_RX_COMMAND, "disconnect-rx-command", handle_disconnect_rx_command, },
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{ AVBTP_ACMP_MESSAGE_TYPE_DISCONNECT_RX_RESPONSE, "disconnect-rx-response", handle_disconnect_rx_response, },
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{ AVBTP_ACMP_MESSAGE_TYPE_GET_RX_STATE_COMMAND, "get-rx-state-command", NULL, },
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{ AVBTP_ACMP_MESSAGE_TYPE_GET_RX_STATE_RESPONSE, "get-rx-state-response", NULL, },
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{ AVBTP_ACMP_MESSAGE_TYPE_GET_TX_CONNECTION_COMMAND, "get-tx-connection-command", NULL, },
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{ AVBTP_ACMP_MESSAGE_TYPE_GET_TX_CONNECTION_RESPONSE, "get-tx-connection-response", NULL, },
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};
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static inline const struct msg_info *find_msg_info(uint16_t type, const char *name)
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{
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uint32_t i;
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for (i = 0; i < SPA_N_ELEMENTS(msg_info); i++) {
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if ((name == NULL && type == msg_info[i].type) ||
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(name != NULL && spa_streq(name, msg_info[i].name)))
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return &msg_info[i];
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}
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return NULL;
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}
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static int acmp_message(void *data, uint64_t now, const void *message, int len)
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{
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struct acmp *acmp = data;
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struct server *server = acmp->server;
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const struct avbtp_packet_acmp *p = message;
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const struct msg_info *info;
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int message_type;
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if (ntohs(p->hdr.eth.type) != AVB_TSN_ETH)
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return 0;
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if (memcmp(p->hdr.eth.dest, mac, 6) != 0 &&
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memcmp(p->hdr.eth.dest, server->mac_addr, 6) != 0)
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return 0;
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if (AVBTP_PACKET_GET_SUBTYPE(&p->hdr) != AVBTP_SUBTYPE_ACMP)
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return 0;
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message_type = AVBTP_PACKET_ACMP_GET_MESSAGE_TYPE(p);
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info = find_msg_info(message_type, NULL);
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if (info == NULL)
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return reply_not_supported(acmp, p, len);
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pw_log_info("got ACMP message %s", info->name);
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if (info->handle == NULL)
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return reply_not_supported(acmp, p, len);
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return info->handle(acmp, now, p, len);
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}
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static void acmp_destroy(void *data)
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{
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struct acmp *acmp = data;
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spa_hook_remove(&acmp->server_listener);
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free(acmp);
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}
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static void check_timeout(struct acmp *acmp, uint64_t now, uint16_t type)
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{
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struct pending *p, *t;
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spa_list_for_each_safe(p, t, &acmp->pending[type], link) {
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if (p->last_time + p->timeout > now)
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continue;
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if (p->retry == 0) {
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pw_log_info("%p: pending timeout, retry", p);
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retry_pending(acmp, now, p);
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} else {
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pw_log_info("%p: pending timeout, fail", p);
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pending_free(acmp, p);
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}
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}
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}
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static void acmp_periodic(void *data, uint64_t now)
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{
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struct acmp *acmp = data;
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check_timeout(acmp, now, PENDING_TALKER);
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check_timeout(acmp, now, PENDING_LISTENER);
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check_timeout(acmp, now, PENDING_CONTROLLER);
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}
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||||
static int do_help(struct acmp *acmp, const char *args, FILE *out)
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{
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||||
fprintf(out, "{ \"type\": \"help\","
|
||||
"\"text\": \""
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||||
"/adp/help: this help \\n"
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||||
"\" }");
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||||
return 0;
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||||
}
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||||
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static int acmp_command(void *data, uint64_t now, const char *command, const char *args, FILE *out)
|
||||
{
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struct acmp *acmp = data;
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||||
int res;
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||||
|
||||
if (!spa_strstartswith(command, "/acmp/"))
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return 0;
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command += strlen("/acmp/");
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||||
if (spa_streq(command, "help"))
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res = do_help(acmp, args, out);
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else
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res = -ENOTSUP;
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||||
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||||
return res;
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||||
}
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||||
|
||||
static const struct server_events server_events = {
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||||
AVBTP_VERSION_SERVER_EVENTS,
|
||||
.destroy = acmp_destroy,
|
||||
.message = acmp_message,
|
||||
.periodic = acmp_periodic,
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||||
.command = acmp_command
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||||
};
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||||
|
||||
struct avbtp_acmp *avbtp_acmp_register(struct server *server)
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||||
{
|
||||
struct acmp *acmp;
|
||||
|
||||
acmp = calloc(1, sizeof(*acmp));
|
||||
if (acmp == NULL)
|
||||
return NULL;
|
||||
|
||||
acmp->server = server;
|
||||
spa_list_init(&acmp->pending[PENDING_TALKER]);
|
||||
spa_list_init(&acmp->pending[PENDING_LISTENER]);
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||||
spa_list_init(&acmp->pending[PENDING_CONTROLLER]);
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||||
|
||||
acmp->listener_attr = avbtp_msrp_attribute_new(server->msrp,
|
||||
AVBTP_MSRP_ATTRIBUTE_TYPE_LISTENER);
|
||||
acmp->talker_attr = avbtp_msrp_attribute_new(server->msrp,
|
||||
AVBTP_MSRP_ATTRIBUTE_TYPE_TALKER_ADVERTISE);
|
||||
|
||||
avdecc_server_add_listener(server, &acmp->server_listener, &server_events, acmp);
|
||||
|
||||
return (struct avbtp_acmp*)acmp;
|
||||
}
|
||||
|
||||
void avbtp_acmp_unregister(struct avbtp_acmp *acmp)
|
||||
{
|
||||
acmp_destroy(acmp);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue