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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <string.h>
#include "ble_hs_priv.h"
int
ble_l2cap_sig_init_cmd(uint8_t op, uint8_t id, uint8_t payload_len,
struct os_mbuf **out_om, void **out_payload_buf)
{
struct ble_l2cap_sig_hdr hdr;
struct os_mbuf *txom;
void *v;
*out_om = NULL;
*out_payload_buf = NULL;
txom = ble_hs_misc_pkthdr();
if (txom == NULL) {
return BLE_HS_ENOMEM;
}
v = os_mbuf_extend(txom, BLE_L2CAP_SIG_HDR_SZ + payload_len);
if (v == NULL) {
return BLE_HS_ENOMEM;
}
hdr.op = op;
hdr.identifier = id;
hdr.length = TOFROMLE16(payload_len);
ble_l2cap_sig_hdr_write(v, BLE_L2CAP_SIG_HDR_SZ, &hdr);
*out_om = txom;
*out_payload_buf = (uint8_t *)v + BLE_L2CAP_SIG_HDR_SZ;
return 0;
}
static void
ble_l2cap_sig_hdr_swap(struct ble_l2cap_sig_hdr *dst,
struct ble_l2cap_sig_hdr *src)
{
dst->op = src->op;
dst->identifier = src->identifier;
dst->length = TOFROMLE16(src->length);
}
void
ble_l2cap_sig_hdr_parse(void *payload, uint16_t len,
struct ble_l2cap_sig_hdr *dst)
{
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_HDR_SZ);
ble_l2cap_sig_hdr_swap(dst, payload);
}
void
ble_l2cap_sig_hdr_write(void *payload, uint16_t len,
struct ble_l2cap_sig_hdr *src)
{
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_HDR_SZ);
ble_l2cap_sig_hdr_swap(payload, src);
}
static void
ble_l2cap_sig_reject_swap(struct ble_l2cap_sig_reject *dst,
struct ble_l2cap_sig_reject *src)
{
dst->reason = TOFROMLE16(src->reason);
}
static void
ble_l2cap_sig_reject_write(void *payload, uint16_t len,
struct ble_l2cap_sig_reject *src,
void *data, int data_len)
{
uint8_t *u8ptr;
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_REJECT_MIN_SZ + data_len);
ble_l2cap_sig_reject_swap(payload, src);
u8ptr = payload;
u8ptr += BLE_L2CAP_SIG_REJECT_MIN_SZ;
memcpy(u8ptr, data, data_len);
}
int
ble_l2cap_sig_reject_tx(struct ble_hs_conn *conn, struct ble_l2cap_chan *chan,
uint8_t id, uint16_t reason,
void *data, int data_len)
{
struct ble_l2cap_sig_reject cmd;
struct os_mbuf *txom;
void *payload_buf;
int rc;
rc = ble_l2cap_sig_init_cmd(BLE_L2CAP_SIG_OP_REJECT, id,
BLE_L2CAP_SIG_REJECT_MIN_SZ + data_len, &txom,
&payload_buf);
cmd.reason = reason;
ble_l2cap_sig_reject_write(payload_buf, txom->om_len, &cmd,
data, data_len);
STATS_INC(ble_l2cap_stats, sig_rx);
rc = ble_l2cap_tx(conn, chan, txom);
return rc;
}
int
ble_l2cap_sig_reject_invalid_cid_tx(struct ble_hs_conn *conn,
struct ble_l2cap_chan *chan, uint8_t id,
uint16_t src_cid, uint16_t dst_cid)
{
int rc;
struct {
uint16_t local_cid;
uint16_t remote_cid;
} data = {
.local_cid = dst_cid,
.remote_cid = src_cid,
};
rc = ble_l2cap_sig_reject_tx(conn, chan, id,
BLE_L2CAP_SIG_ERR_INVALID_CID,
&data, sizeof data);
return rc;
}
static void
ble_l2cap_sig_update_req_swap(struct ble_l2cap_sig_update_req *dst,
struct ble_l2cap_sig_update_req *src)
{
dst->itvl_min = TOFROMLE16(src->itvl_min);
dst->itvl_max = TOFROMLE16(src->itvl_max);
dst->slave_latency = TOFROMLE16(src->slave_latency);
dst->timeout_multiplier = TOFROMLE16(src->timeout_multiplier);
}
void
ble_l2cap_sig_update_req_parse(void *payload, int len,
struct ble_l2cap_sig_update_req *dst)
{
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_UPDATE_REQ_SZ);
ble_l2cap_sig_update_req_swap(dst, payload);
}
void
ble_l2cap_sig_update_req_write(void *payload, int len,
struct ble_l2cap_sig_update_req *src)
{
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_UPDATE_REQ_SZ);
ble_l2cap_sig_update_req_swap(payload, src);
}
int
ble_l2cap_sig_update_req_tx(struct ble_hs_conn *conn,
struct ble_l2cap_chan *chan, uint8_t id,
struct ble_l2cap_sig_update_req *req)
{
struct os_mbuf *txom;
void *payload_buf;
int rc;
rc = ble_l2cap_sig_init_cmd(BLE_L2CAP_SIG_OP_UPDATE_REQ, id,
BLE_L2CAP_SIG_UPDATE_REQ_SZ, &txom,
&payload_buf);
if (rc != 0) {
return rc;
}
ble_l2cap_sig_update_req_write(payload_buf, BLE_L2CAP_SIG_UPDATE_REQ_SZ,
req);
rc = ble_l2cap_tx(conn, chan, txom);
if (rc != 0) {
return rc;
}
return 0;
}
static void
ble_l2cap_sig_update_rsp_swap(struct ble_l2cap_sig_update_rsp *dst,
struct ble_l2cap_sig_update_rsp *src)
{
dst->result = TOFROMLE16(src->result);
}
void
ble_l2cap_sig_update_rsp_parse(void *payload, int len,
struct ble_l2cap_sig_update_rsp *dst)
{
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_UPDATE_RSP_SZ);
ble_l2cap_sig_update_rsp_swap(dst, payload);
}
void
ble_l2cap_sig_update_rsp_write(void *payload, int len,
struct ble_l2cap_sig_update_rsp *src)
{
BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_UPDATE_RSP_SZ);
ble_l2cap_sig_update_rsp_swap(payload, src);
}
int
ble_l2cap_sig_update_rsp_tx(struct ble_hs_conn *conn,
struct ble_l2cap_chan *chan, uint8_t id,
uint16_t result)
{
struct ble_l2cap_sig_update_rsp rsp;
struct os_mbuf *txom;
void *payload_buf;
int rc;
rc = ble_l2cap_sig_init_cmd(BLE_L2CAP_SIG_OP_UPDATE_RSP, id,
BLE_L2CAP_SIG_UPDATE_RSP_SZ, &txom,
&payload_buf);
if (rc != 0) {
return rc;
}
rsp.result = result;
ble_l2cap_sig_update_rsp_write(payload_buf, BLE_L2CAP_SIG_UPDATE_RSP_SZ,
&rsp);
rc = ble_l2cap_tx(conn, chan, txom);
if (rc != 0) {
return rc;
}
return 0;
}
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