2  * Copyright (c) 2020 - 2022 Nordic Semiconductor ASA
4  * SPDX-License-Identifier: Apache-2.0
22 /* This l2cap is the only OTS-file in use for OTC.
55 	len = MIN(l2cap_ctx->ot_chan.tx.mtu, CONFIG_BT_OTS_L2CAP_CHAN_TX_MTU);  in ots_l2cap_send()
56 	len = MIN(len, l2cap_ctx->tx.len - l2cap_ctx->tx.len_sent);  in ots_l2cap_send()
61 	net_buf_add_mem(buf, &l2cap_ctx->tx.data[l2cap_ctx->tx.len_sent], len);  in ots_l2cap_send()
63 	ret = bt_l2cap_chan_send(&l2cap_ctx->ot_chan.chan, buf);  in ots_l2cap_send()
68 		return -ENOEXEC;  in ots_l2cap_send()
71 	/* Mark that L2CAP TX was accepted. */  in ots_l2cap_send()
72 	l2cap_ctx->tx.len_sent += len;  in ots_l2cap_send()
74 	LOG_DBG("Sending TX chunk with %d bytes on L2CAP CoC", len);  in ots_l2cap_send()
82 	LOG_DBG("Channel %p allocating buffer", chan);  in l2cap_alloc_buf()
94 	LOG_DBG("Outgoing data channel %p transmitted", chan);  in l2cap_sent()
98 	/* Ongoing TX - sending next chunk. */  in l2cap_sent()
99 	if (l2cap_ctx->tx.len != l2cap_ctx->tx.len_sent) {  in l2cap_sent()
105 	/* TX completed - notify upper layers and clean up. */  in l2cap_sent()
106 	memset(&l2cap_ctx->tx, 0, sizeof(l2cap_ctx->tx));  in l2cap_sent()
108 	LOG_DBG("Scheduled TX on L2CAP CoC is complete");  in l2cap_sent()
110 	if (l2cap_ctx->tx_done) {  in l2cap_sent()
111 		l2cap_ctx->tx_done(l2cap_ctx, chan->conn);  in l2cap_sent()
120 	LOG_DBG("Incoming data channel %p received", chan);  in l2cap_recv()
124 	if (!l2cap_ctx->rx_done) {  in l2cap_recv()
125 		return -ENODEV;  in l2cap_recv()
128 	return l2cap_ctx->rx_done(l2cap_ctx, chan->conn, buf);  in l2cap_recv()
133 	LOG_DBG("Channel %p status %lu", chan, atomic_get(status));  in l2cap_status()
138 	LOG_DBG("Channel %p connected", chan);  in l2cap_connected()
146 	LOG_DBG("Channel %p disconnected", chan);  in l2cap_disconnected()
150 	if (l2cap_ctx->closed) {  in l2cap_disconnected()
151 		l2cap_ctx->closed(l2cap_ctx, chan->conn);  in l2cap_disconnected()
168 	chan->rx.mtu = CONFIG_BT_OTS_L2CAP_CHAN_RX_MTU;  in l2cap_chan_init()
169 	chan->chan.ops = &l2cap_ops;  in l2cap_chan_init()
171 	LOG_DBG("RX MTU set to %u", chan->rx.mtu);  in l2cap_chan_init()
179 		if (l2cap_ctx->ot_chan.chan.conn) {  in find_free_l2cap_ctx()
198 		l2cap_chan_init(&l2cap_ctx->ot_chan);  in l2cap_accept()
199 		memset(&l2cap_ctx->tx, 0, sizeof(l2cap_ctx->tx));  in l2cap_accept()
201 		*chan = &l2cap_ctx->ot_chan.chan;  in l2cap_accept()
206 	return -ENOMEM;  in l2cap_accept()
234 	return (l2cap_ctx->ot_chan.chan.conn == conn);  in bt_gatt_ots_l2cap_is_open()
242 	if (l2cap_ctx->tx.len != 0) {  in bt_gatt_ots_l2cap_send()
243 		LOG_ERR("L2CAP TX in progress");  in bt_gatt_ots_l2cap_send()
245 		return -EAGAIN;  in bt_gatt_ots_l2cap_send()
248 	l2cap_ctx->tx.data = data;  in bt_gatt_ots_l2cap_send()
249 	l2cap_ctx->tx.len = len;  in bt_gatt_ots_l2cap_send()
251 	LOG_DBG("Starting TX on L2CAP CoC with %d byte packet", len);  in bt_gatt_ots_l2cap_send()
265 	sys_slist_append(&channels, &l2cap_ctx->node);  in bt_gatt_ots_l2cap_register()
272 	sys_slist_find_and_remove(&channels, &l2cap_ctx->node);  in bt_gatt_ots_l2cap_unregister()
286 		return -ENOTCONN;  in bt_gatt_ots_l2cap_connect()
291 		return -EINVAL;  in bt_gatt_ots_l2cap_connect()
298 		return -ENOMEM;  in bt_gatt_ots_l2cap_connect()
301 	l2cap_chan_init(&ctx->ot_chan);  in bt_gatt_ots_l2cap_connect()
302 	(void)memset(&ctx->tx, 0, sizeof(ctx->tx));  in bt_gatt_ots_l2cap_connect()
305 	err = bt_l2cap_chan_connect(conn, &ctx->ot_chan.chan, BT_GATT_OTS_L2CAP_PSM);  in bt_gatt_ots_l2cap_connect()
318 	return bt_l2cap_chan_disconnect(&l2cap_ctx->ot_chan.chan);  in bt_gatt_ots_l2cap_disconnect()