From 7a46c07230b8d8108c0e8e80df4522d0ac116538 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:28:17 +0200 Subject: Adding upstream version 0.3.65. Signed-off-by: Daniel Baumann --- src/modules/module-avb/mvrp.c | 297 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 297 insertions(+) create mode 100644 src/modules/module-avb/mvrp.c (limited to 'src/modules/module-avb/mvrp.c') diff --git a/src/modules/module-avb/mvrp.c b/src/modules/module-avb/mvrp.c new file mode 100644 index 0000000..2f5f6ea --- /dev/null +++ b/src/modules/module-avb/mvrp.c @@ -0,0 +1,297 @@ +/* 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 + +#include + +#include "mvrp.h" + +static const uint8_t mvrp_mac[6] = AVB_MVRP_MAC; + +struct attr { + struct avb_mvrp_attribute attr; + struct spa_hook listener; + struct spa_list link; + struct mvrp *mvrp; +}; + +struct mvrp { + struct server *server; + struct spa_hook server_listener; + struct spa_hook mrp_listener; + + struct spa_source *source; + + struct spa_list attributes; +}; + +static bool mvrp_check_header(void *data, const void *hdr, size_t *hdr_size, bool *has_params) +{ + const struct avb_packet_mvrp_msg *msg = hdr; + uint8_t attr_type = msg->attribute_type; + + if (!AVB_MVRP_ATTRIBUTE_TYPE_VALID(attr_type)) + return false; + + *hdr_size = sizeof(*msg); + *has_params = false; + return true; +} + +static int mvrp_attr_event(void *data, uint64_t now, uint8_t attribute_type, uint8_t event) +{ + struct mvrp *mvrp = data; + struct attr *a; + spa_list_for_each(a, &mvrp->attributes, link) + if (a->attr.type == attribute_type) + avb_mrp_attribute_rx_event(a->attr.mrp, now, event); + return 0; +} + +static void debug_vid(const struct avb_packet_mvrp_vid *t) +{ + pw_log_info("vid"); + pw_log_info(" %d", ntohs(t->vlan)); +} + +static int process_vid(struct mvrp *mvrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num) +{ + return mvrp_attr_event(mvrp, now, attr_type, event); +} + +static int encode_vid(struct mvrp *mvrp, struct attr *a, void *m) +{ + struct avb_packet_mvrp_msg *msg = m; + struct avb_packet_mrp_vector *v; + struct avb_packet_mvrp_vid *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_MVRP_ATTRIBUTE_TYPE_VID; + msg->attribute_length = sizeof(*d); + + v = (struct avb_packet_mrp_vector *)msg->attribute_list; + v->lva = 0; + AVB_MRP_VECTOR_SET_NUM_VALUES(v, 1); + + d = (struct avb_packet_mvrp_vid *)v->first_value; + *d = a->attr.attr.vid; + + 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 void notify_vid(struct mvrp *mvrp, uint64_t now, struct attr *attr, uint8_t notify) +{ + pw_log_info("> notify vid: %s", avb_mrp_notify_name(notify)); + debug_vid(&attr->attr.attr.vid); +} + +static const struct { + const char *name; + int (*process) (struct mvrp *mvrp, uint64_t now, uint8_t attr_type, + const void *m, uint8_t event, uint8_t param, int num); + int (*encode) (struct mvrp *mvrp, struct attr *attr, void *m); + void (*notify) (struct mvrp *mvrp, uint64_t now, struct attr *attr, uint8_t notify); +} dispatch[] = { + [AVB_MVRP_ATTRIBUTE_TYPE_VID] = { "vid", process_vid, encode_vid, notify_vid }, +}; + +static int mvrp_process(void *data, uint64_t now, uint8_t attribute_type, const void *value, + uint8_t event, uint8_t param, int index) +{ + struct mvrp *mvrp = data; + return dispatch[attribute_type].process(mvrp, now, + attribute_type, value, event, param, index); +} + +static const struct avb_mrp_parse_info info = { + AVB_VERSION_MRP_PARSE_INFO, + .check_header = mvrp_check_header, + .attr_event = mvrp_attr_event, + .process = mvrp_process, +}; + +static int mvrp_message(struct mvrp *mvrp, uint64_t now, const void *message, int len) +{ + pw_log_debug("MVRP"); + return avb_mrp_parse_packet(mvrp->server->mrp, + now, message, len, &info, mvrp); +} + +static void on_socket_data(void *data, int fd, uint32_t mask) +{ + struct mvrp *mvrp = 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); + mvrp_message(mvrp, SPA_TIMESPEC_TO_NSEC(&now), buffer, len); + } + } +} + +static void mvrp_destroy(void *data) +{ + struct mvrp *mvrp = data; + spa_hook_remove(&mvrp->server_listener); + pw_loop_destroy_source(mvrp->server->impl->loop, mvrp->source); + free(mvrp); +} + +static const struct server_events server_events = { + AVB_VERSION_SERVER_EVENTS, + .destroy = mvrp_destroy, +}; + +static void mvrp_notify(void *data, uint64_t now, uint8_t notify) +{ + struct attr *a = data; + struct mvrp *mvrp = a->mvrp; + return dispatch[a->attr.type].notify(mvrp, now, a, notify); +} + +static const struct avb_mrp_attribute_events mrp_attr_events = { + AVB_VERSION_MRP_ATTRIBUTE_EVENTS, + .notify = mvrp_notify, +}; + +struct avb_mvrp_attribute *avb_mvrp_attribute_new(struct avb_mvrp *m, + uint8_t type) +{ + struct mvrp *mvrp = (struct mvrp*)m; + struct avb_mrp_attribute *attr; + struct attr *a; + + attr = avb_mrp_attribute_new(mvrp->server->mrp, sizeof(struct attr)); + + a = attr->user_data; + a->attr.mrp = attr; + a->attr.type = type; + spa_list_append(&mvrp->attributes, &a->link); + avb_mrp_attribute_add_listener(attr, &a->listener, &mrp_attr_events, a); + + return &a->attr; +} + +static void mvrp_event(void *data, uint64_t now, uint8_t event) +{ + struct mvrp *mvrp = 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, &mvrp->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(mvrp, 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(mvrp->server, mvrp_mac, AVB_MVRP_ETH, + buffer, total); +} + +static const struct avb_mrp_events mrp_events = { + AVB_VERSION_MRP_EVENTS, + .event = mvrp_event, +}; + +struct avb_mvrp *avb_mvrp_register(struct server *server) +{ + struct mvrp *mvrp; + int fd, res; + + fd = avb_server_make_socket(server, AVB_MVRP_ETH, mvrp_mac); + if (fd < 0) { + errno = -fd; + return NULL; + } + mvrp = calloc(1, sizeof(*mvrp)); + if (mvrp == NULL) { + res = -errno; + goto error_close; + } + + mvrp->server = server; + spa_list_init(&mvrp->attributes); + + mvrp->source = pw_loop_add_io(server->impl->loop, fd, SPA_IO_IN, true, on_socket_data, mvrp); + if (mvrp->source == NULL) { + res = -errno; + pw_log_error("mvrp %p: can't create mvrp source: %m", mvrp); + goto error_no_source; + } + avdecc_server_add_listener(server, &mvrp->server_listener, &server_events, mvrp); + avb_mrp_add_listener(server->mrp, &mvrp->mrp_listener, &mrp_events, mvrp); + + return (struct avb_mvrp*)mvrp; + +error_no_source: + free(mvrp); +error_close: + close(fd); + errno = -res; + return NULL; +} -- cgit v1.2.3