avb: add beginnings of MRP/MMRP/MSRP/MVRP/SRP

src/modules/module-avbtp/mmrp.c

@@ -0,0 +1,76 @@
+/* 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 <pipewire/pipewire.h>
+
+#include "mmrp.h"
+
+static const uint8_t mac[6] = AVB_MMRP_MAC;
+
+struct mmrp {
+	struct server *server;
+	struct spa_hook server_listener;
+};
+
+static int mmrp_message(void *data, uint64_t now, const void *message, int len)
+{
+	const struct avbtp_packet_mrp *p = message;
+
+	if (ntohs(p->eth.type) != AVB_MMRP_ETH)
+		return 0;
+	if (memcmp(p->eth.dest, mac, 6) != 0)
+		return 0;
+
+	pw_log_info("MMRP");
+
+	return 0;
+}
+
+static void mmrp_destroy(void *data)
+{
+	struct mmrp *mmrp = data;
+	spa_hook_remove(&mmrp->server_listener);
+	free(mmrp);
+}
+
+static const struct server_events server_events = {
+	AVBTP_VERSION_SERVER_EVENTS,
+	.destroy = mmrp_destroy,
+	.message = mmrp_message
+};
+
+int avbtp_mmrp_register(struct server *server)
+{
+	struct mmrp *mmrp;
+
+	mmrp = calloc(1, sizeof(*mmrp));
+	if (mmrp == NULL)
+		return -errno;
+
+	mmrp->server = server;
+
+	avdecc_server_add_listener(server, &mmrp->server_listener, &server_events, mmrp);
+
+	return 0;
+}