diff options
Diffstat (limited to '')
| -rw-r--r-- | src/modules/module-avb/msrp.c | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/src/modules/module-avb/msrp.c b/src/modules/module-avb/msrp.c new file mode 100644 index 0000000..85d3ff9 --- /dev/null +++ b/src/modules/module-avb/msrp.c @@ -0,0 +1,459 @@ +/* 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. + */ + +#include <unistd.h> + +#include <spa/debug/mem.h> + +#include <pipewire/pipewire.h> + +#include "utils.h" +#include "msrp.h" + +static const uint8_t msrp_mac[6] = AVB_MSRP_MAC; + +struct attr { + struct avb_msrp_attribute attr; + struct msrp *msrp; + struct spa_hook listener; + struct spa_list link; +}; + +struct msrp { + struct server *server; + struct spa_hook server_listener; + struct spa_hook mrp_listener; + + struct spa_source *source; + + struct spa_list attributes; +}; + +static void debug_msrp_talker_common(const struct avb_packet_msrp_talker *t) +{ + char buf[128]; + pw_log_info(" stream-id: %s", avb_utils_format_id(buf, sizeof(buf), be64toh(t->stream_id))); + pw_log_info(" dest-addr: %s", avb_utils_format_addr(buf, sizeof(buf), t->dest_addr)); + pw_log_info(" vlan-id: %d", ntohs(t->vlan_id)); + pw_log_info(" tspec-max-frame-size: %d", ntohs(t->tspec_max_frame_size)); + pw_log_info(" tspec-max-interval-frames: %d", ntohs(t->tspec_max_interval_frames)); + pw_log_info(" priority: %d", t->priority); + pw_log_info(" rank: %d", t->rank); + pw_log_info(" accumulated-latency: %d", ntohl(t->accumulated_latency)); +} + +static void debug_msrp_talker(const struct avb_packet_msrp_talker *t) +{ + pw_log_info("talker"); + debug_msrp_talker_common(t); +} + +static void notify_talker(struct msrp *msrp, uint64_t now, struct attr *attr, uint8_t notify) +{ + pw_log_info("> notify talker: %s", avb_mrp_notify_name(notify)); + debug_msrp_talker(&attr->attr.attr.talker); +} + +static int process_talker(struct msrp *msrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num) +{ + const struct avb_packet_msrp_talker *t = m; + struct attr *a; + spa_list_for_each(a, &msrp->attributes, link) + if (a->attr.type == attr_type && + a->attr.attr.talker.stream_id == t->stream_id) { + a->attr.attr.talker = *t; + avb_mrp_attribute_rx_event(a->attr.mrp, now, event); + } + return 0; +} +static int encode_talker(struct msrp *msrp, struct attr *a, void *m) +{ + struct avb_packet_msrp_msg *msg = m; + struct avb_packet_mrp_vector *v; + struct avb_packet_msrp_talker *t; + struct avb_packet_mrp_footer *f; + uint8_t *ev; + size_t attr_list_length = sizeof(*v) + sizeof(*t) + sizeof(*f) + 1; + + msg->attribute_type = AVB_MSRP_ATTRIBUTE_TYPE_TALKER_ADVERTISE; + msg->attribute_length = sizeof(*t); + msg->attribute_list_length = htons(attr_list_length); + + v = (struct avb_packet_mrp_vector *)msg->attribute_list; + v->lva = 0; + AVB_MRP_VECTOR_SET_NUM_VALUES(v, 1); + + t = (struct avb_packet_msrp_talker *)v->first_value; + *t = a->attr.attr.talker; + + ev = SPA_PTROFF(t, sizeof(*t), uint8_t); + *ev = a->attr.mrp->pending_send * 6 * 6; + + f = SPA_PTROFF(ev, sizeof(*ev), struct avb_packet_mrp_footer); + f->end_mark = 0; + + return attr_list_length + sizeof(*msg); +} + + +static void debug_msrp_talker_fail(const struct avb_packet_msrp_talker_fail *t) +{ + char buf[128]; + pw_log_info("talker fail"); + debug_msrp_talker_common(&t->talker); + pw_log_info(" bridge-id: %s", avb_utils_format_id(buf, sizeof(buf), be64toh(t->bridge_id))); + pw_log_info(" failure-code: %d", t->failure_code); +} + +static int process_talker_fail(struct msrp *msrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num) +{ + const struct avb_packet_msrp_talker_fail *t = m; + struct attr *a; + + debug_msrp_talker_fail(t); + + spa_list_for_each(a, &msrp->attributes, link) + if (a->attr.type == attr_type && + a->attr.attr.talker_fail.talker.stream_id == t->talker.stream_id) + avb_mrp_attribute_rx_event(a->attr.mrp, now, event); + return 0; +} + +static void debug_msrp_listener(const struct avb_packet_msrp_listener *l, uint8_t param) +{ + char buf[128]; + pw_log_info("listener"); + pw_log_info(" %s", avb_utils_format_id(buf, sizeof(buf), be64toh(l->stream_id))); + pw_log_info(" %d", param); +} + +static void notify_listener(struct msrp *msrp, uint64_t now, struct attr *attr, uint8_t notify) +{ + pw_log_info("> notify listener: %s", avb_mrp_notify_name(notify)); + debug_msrp_listener(&attr->attr.attr.listener, attr->attr.param); +} + +static int process_listener(struct msrp *msrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num) +{ + const struct avb_packet_msrp_listener *l = m; + struct attr *a; + spa_list_for_each(a, &msrp->attributes, link) + if (a->attr.type == attr_type && + a->attr.attr.listener.stream_id == l->stream_id) + avb_mrp_attribute_rx_event(a->attr.mrp, now, event); + return 0; +} +static int encode_listener(struct msrp *msrp, struct attr *a, void *m) +{ + struct avb_packet_msrp_msg *msg = m; + struct avb_packet_mrp_vector *v; + struct avb_packet_msrp_listener *l; + struct avb_packet_mrp_footer *f; + uint8_t *ev; + size_t attr_list_length = sizeof(*v) + sizeof(*l) + sizeof(*f) + 1 + 1; + + msg->attribute_type = AVB_MSRP_ATTRIBUTE_TYPE_LISTENER; + msg->attribute_length = sizeof(*l); + msg->attribute_list_length = htons(attr_list_length); + + v = (struct avb_packet_mrp_vector *)msg->attribute_list; + v->lva = 0; + AVB_MRP_VECTOR_SET_NUM_VALUES(v, 1); + + l = (struct avb_packet_msrp_listener *)v->first_value; + *l = a->attr.attr.listener; + + ev = SPA_PTROFF(l, sizeof(*l), uint8_t); + *ev = a->attr.mrp->pending_send * 6 * 6; + + ev = SPA_PTROFF(ev, sizeof(*ev), uint8_t); + *ev = a->attr.param * 4 * 4 * 4; + + f = SPA_PTROFF(ev, sizeof(*ev), struct avb_packet_mrp_footer); + f->end_mark = 0; + + return attr_list_length + sizeof(*msg); +} + +static void debug_msrp_domain(const struct avb_packet_msrp_domain *d) +{ + pw_log_info("domain"); + pw_log_info(" id: %d", d->sr_class_id); + pw_log_info(" prio: %d", d->sr_class_priority); + pw_log_info(" vid: %d", ntohs(d->sr_class_vid)); +} + +static void notify_domain(struct msrp *msrp, uint64_t now, struct attr *attr, uint8_t notify) +{ + pw_log_info("> notify domain: %s", avb_mrp_notify_name(notify)); + debug_msrp_domain(&attr->attr.attr.domain); +} + +static int process_domain(struct msrp *msrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num) +{ + struct attr *a; + spa_list_for_each(a, &msrp->attributes, link) + if (a->attr.type == attr_type) + avb_mrp_attribute_rx_event(a->attr.mrp, now, event); + return 0; +} + +static int encode_domain(struct msrp *msrp, struct attr *a, void *m) +{ + struct avb_packet_msrp_msg *msg = m; + struct avb_packet_mrp_vector *v; + struct avb_packet_msrp_domain *d; + struct avb_packet_mrp_footer *f; + uint8_t *ev; + size_t attr_list_length = sizeof(*v) + sizeof(*d) + sizeof(*f) + 1; + + msg->attribute_type = AVB_MSRP_ATTRIBUTE_TYPE_DOMAIN; + msg->attribute_length = sizeof(*d); + msg->attribute_list_length = htons(attr_list_length); + + v = (struct avb_packet_mrp_vector *)msg->attribute_list; + v->lva = 0; + AVB_MRP_VECTOR_SET_NUM_VALUES(v, 1); + + d = (struct avb_packet_msrp_domain *)v->first_value; + *d = a->attr.attr.domain; + + ev = SPA_PTROFF(d, sizeof(*d), uint8_t); + *ev = a->attr.mrp->pending_send * 36; + + f = SPA_PTROFF(ev, sizeof(*ev), struct avb_packet_mrp_footer); + f->end_mark = 0; + + return attr_list_length + sizeof(*msg); +} + +static const struct { + const char *name; + int (*process) (struct msrp *msrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num); + int (*encode) (struct msrp *msrp, struct attr *attr, void *m); + void (*notify) (struct msrp *msrp, uint64_t now, struct attr *attr, uint8_t notify); +} dispatch[] = { + [AVB_MSRP_ATTRIBUTE_TYPE_TALKER_ADVERTISE] = { "talker", process_talker, encode_talker, notify_talker, }, + [AVB_MSRP_ATTRIBUTE_TYPE_TALKER_FAILED] = { "talker-fail", process_talker_fail, NULL, NULL }, + [AVB_MSRP_ATTRIBUTE_TYPE_LISTENER] = { "listener", process_listener, encode_listener, notify_listener }, + [AVB_MSRP_ATTRIBUTE_TYPE_DOMAIN] = { "domain", process_domain, encode_domain, notify_domain, }, +}; + +static bool msrp_check_header(void *data, const void *hdr, size_t *hdr_size, bool *has_params) +{ + const struct avb_packet_msrp_msg *msg = hdr; + uint8_t attr_type = msg->attribute_type; + + if (!AVB_MSRP_ATTRIBUTE_TYPE_VALID(attr_type)) + return false; + + *hdr_size = sizeof(*msg); + *has_params = attr_type == AVB_MSRP_ATTRIBUTE_TYPE_LISTENER; + return true; +} + +static int msrp_attr_event(void *data, uint64_t now, uint8_t attribute_type, uint8_t event) +{ + struct msrp *msrp = data; + struct attr *a; + spa_list_for_each(a, &msrp->attributes, link) + if (a->attr.type == attribute_type) + avb_mrp_attribute_update_state(a->attr.mrp, now, event); + return 0; +} + +static int msrp_process(void *data, uint64_t now, uint8_t attribute_type, const void *value, + uint8_t event, uint8_t param, int index) +{ + struct msrp *msrp = data; + return dispatch[attribute_type].process(msrp, now, + attribute_type, value, event, param, index); +} + +static const struct avb_mrp_parse_info info = { + AVB_VERSION_MRP_PARSE_INFO, + .check_header = msrp_check_header, + .attr_event = msrp_attr_event, + .process = msrp_process, +}; + + +static int msrp_message(struct msrp *msrp, uint64_t now, const void *message, int len) +{ + return avb_mrp_parse_packet(msrp->server->mrp, + now, message, len, &info, msrp); +} +static void on_socket_data(void *data, int fd, uint32_t mask) +{ + struct msrp *msrp = data; + struct timespec now; + + if (mask & SPA_IO_IN) { + int len; + uint8_t buffer[2048]; + + len = recv(fd, buffer, sizeof(buffer), 0); + + if (len < 0) { + pw_log_warn("got recv error: %m"); + } + else if (len < (int)sizeof(struct avb_packet_header)) { + pw_log_warn("short packet received (%d < %d)", len, + (int)sizeof(struct avb_packet_header)); + } else { + clock_gettime(CLOCK_REALTIME, &now); + msrp_message(msrp, SPA_TIMESPEC_TO_NSEC(&now), buffer, len); + } + } +} + +static void msrp_destroy(void *data) +{ + struct msrp *msrp = data; + spa_hook_remove(&msrp->server_listener); + pw_loop_destroy_source(msrp->server->impl->loop, msrp->source); + free(msrp); +} + +static const struct server_events server_events = { + AVB_VERSION_SERVER_EVENTS, + .destroy = msrp_destroy, +}; + +static void msrp_notify(void *data, uint64_t now, uint8_t notify) +{ + struct attr *a = data; + struct msrp *msrp = a->msrp; + return dispatch[a->attr.type].notify(msrp, now, a, notify); +} + +static const struct avb_mrp_attribute_events mrp_attr_events = { + AVB_VERSION_MRP_ATTRIBUTE_EVENTS, + .notify = msrp_notify, +}; + +struct avb_msrp_attribute *avb_msrp_attribute_new(struct avb_msrp *m, + uint8_t type) +{ + struct msrp *msrp = (struct msrp*)m; + struct avb_mrp_attribute *attr; + struct attr *a; + + attr = avb_mrp_attribute_new(msrp->server->mrp, sizeof(struct attr)); + + a = attr->user_data; + a->msrp = msrp; + a->attr.mrp = attr; + a->attr.type = type; + spa_list_append(&msrp->attributes, &a->link); + avb_mrp_attribute_add_listener(attr, &a->listener, &mrp_attr_events, a); + + return &a->attr; +} + +static void msrp_event(void *data, uint64_t now, uint8_t event) +{ + struct msrp *msrp = data; + uint8_t buffer[2048]; + struct avb_packet_mrp *p = (struct avb_packet_mrp*)buffer; + struct avb_packet_mrp_footer *f; + void *msg = SPA_PTROFF(buffer, sizeof(*p), void); + struct attr *a; + int len, count = 0; + size_t total = sizeof(*p) + 2; + + p->version = AVB_MRP_PROTOCOL_VERSION; + + spa_list_for_each(a, &msrp->attributes, link) { + if (!a->attr.mrp->pending_send) + continue; + if (dispatch[a->attr.type].encode == NULL) + continue; + + pw_log_debug("send %s %s", dispatch[a->attr.type].name, + avb_mrp_send_name(a->attr.mrp->pending_send)); + + len = dispatch[a->attr.type].encode(msrp, a, msg); + if (len < 0) + break; + + count++; + msg = SPA_PTROFF(msg, len, void); + total += len; + } + f = (struct avb_packet_mrp_footer *)msg; + f->end_mark = 0; + + if (count > 0) + avb_server_send_packet(msrp->server, msrp_mac, AVB_MSRP_ETH, + buffer, total); +} + +static const struct avb_mrp_events mrp_events = { + AVB_VERSION_MRP_EVENTS, + .event = msrp_event, +}; + +struct avb_msrp *avb_msrp_register(struct server *server) +{ + struct msrp *msrp; + int fd, res; + + fd = avb_server_make_socket(server, AVB_MSRP_ETH, msrp_mac); + if (fd < 0) { + errno = -fd; + return NULL; + } + msrp = calloc(1, sizeof(*msrp)); + if (msrp == NULL) { + res = -errno; + goto error_close; + } + + msrp->server = server; + spa_list_init(&msrp->attributes); + + msrp->source = pw_loop_add_io(server->impl->loop, fd, SPA_IO_IN, true, on_socket_data, msrp); + if (msrp->source == NULL) { + res = -errno; + pw_log_error("msrp %p: can't create msrp source: %m", msrp); + goto error_no_source; + } + avdecc_server_add_listener(server, &msrp->server_listener, &server_events, msrp); + avb_mrp_add_listener(server->mrp, &msrp->mrp_listener, &mrp_events, msrp); + + return (struct avb_msrp*)msrp; + +error_no_source: + free(msrp); +error_close: + close(fd); + errno = -res; + return NULL; +} |