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bluez/emulator/le.c

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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2011-2012 Intel Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/uio.h>
#include <time.h>
#include "lib/bluetooth.h"
#include "lib/hci.h"
#include "src/shared/util.h"
#include "src/shared/crypto.h"
#include "src/shared/ecc.h"
#include "src/shared/mainloop.h"
#include "monitor/bt.h"
#include "phy.h"
#include "le.h"
#define WHITE_LIST_SIZE 16
#define RESOLV_LIST_SIZE 16
#define SCAN_CACHE_SIZE 64
#define DEFAULT_TX_LEN 0x001b
#define DEFAULT_TX_TIME 0x0148
#define MAX_TX_LEN 0x00fb
#define MAX_TX_TIME 0x0848
#define MAX_RX_LEN 0x00fb
#define MAX_RX_TIME 0x0848
struct bt_peer {
uint8_t addr_type;
uint8_t addr[6];
};
struct bt_le {
volatile int ref_count;
int vhci_fd;
struct bt_phy *phy;
struct bt_crypto *crypto;
int adv_timeout_id;
int scan_timeout_id;
bool scan_window_active;
uint8_t scan_chan_idx;
uint8_t event_mask[16];
uint16_t manufacturer;
uint8_t commands[64];
uint8_t features[8];
uint8_t bdaddr[6];
uint8_t le_event_mask[8];
uint16_t le_mtu;
uint8_t le_max_pkt;
uint8_t le_features[8];
uint8_t le_random_addr[6];
uint16_t le_adv_min_interval;
uint16_t le_adv_max_interval;
uint8_t le_adv_type;
uint8_t le_adv_own_addr_type;
uint8_t le_adv_direct_addr_type;
uint8_t le_adv_direct_addr[6];
uint8_t le_adv_channel_map;
uint8_t le_adv_filter_policy;
int8_t le_adv_tx_power;
uint8_t le_adv_data_len;
uint8_t le_adv_data[31];
uint8_t le_scan_rsp_data_len;
uint8_t le_scan_rsp_data[31];
uint8_t le_adv_enable;
uint8_t le_scan_type;
uint16_t le_scan_interval;
uint16_t le_scan_window;
uint8_t le_scan_own_addr_type;
uint8_t le_scan_filter_policy;
uint8_t le_scan_enable;
uint8_t le_scan_filter_dup;
uint8_t le_conn_peer_addr_type;
uint8_t le_conn_peer_addr[6];
uint8_t le_conn_own_addr_type;
uint8_t le_conn_enable;
uint8_t le_white_list_size;
uint8_t le_white_list[WHITE_LIST_SIZE][7];
uint8_t le_states[8];
uint16_t le_default_tx_len;
uint16_t le_default_tx_time;
uint8_t le_local_sk256[32];
uint8_t le_resolv_list[RESOLV_LIST_SIZE][39];
uint8_t le_resolv_list_size;
uint8_t le_resolv_enable;
uint16_t le_resolv_timeout;
struct bt_peer scan_cache[SCAN_CACHE_SIZE];
uint8_t scan_cache_count;
};
static bool is_in_white_list(struct bt_le *hci, uint8_t addr_type,
const uint8_t addr[6])
{
int i;
for (i = 0; i < hci->le_white_list_size; i++) {
if (hci->le_white_list[i][0] == addr_type &&
!memcmp(&hci->le_white_list[i][1], addr, 6))
return true;
}
return false;
}
static void clear_white_list(struct bt_le *hci)
{
int i;
for (i = 0; i < hci->le_white_list_size; i++) {
hci->le_white_list[i][0] = 0xff;
memset(&hci->le_white_list[i][1], 0, 6);
}
}
static void resolve_peer_addr(struct bt_le *hci, uint8_t peer_addr_type,
const uint8_t peer_addr[6],
uint8_t *addr_type, uint8_t addr[6])
{
int i;
if (!hci->le_resolv_enable)
goto done;
if (peer_addr_type != 0x01)
goto done;
if ((peer_addr[5] & 0xc0) != 0x40)
goto done;
for (i = 0; i < hci->le_resolv_list_size; i++) {
uint8_t local_hash[3];
if (hci->le_resolv_list[i][0] == 0xff)
continue;
bt_crypto_ah(hci->crypto, &hci->le_resolv_list[i][7],
peer_addr + 3, local_hash);
if (!memcmp(peer_addr, local_hash, 3)) {
switch (hci->le_resolv_list[i][0]) {
case 0x00:
*addr_type = 0x02;
break;
case 0x01:
*addr_type = 0x03;
break;
default:
continue;
}
memcpy(addr, &hci->le_resolv_list[i][1], 6);
return;
}
}
done:
*addr_type = peer_addr_type;
memcpy(addr, peer_addr, 6);
}
static void clear_resolv_list(struct bt_le *hci)
{
int i;
for (i = 0; i < hci->le_resolv_list_size; i++) {
hci->le_resolv_list[i][0] = 0xff;
memset(&hci->le_resolv_list[i][1], 0, 38);
}
}
static void reset_defaults(struct bt_le *hci)
{
memset(hci->event_mask, 0, sizeof(hci->event_mask));
hci->event_mask[0] |= 0x10; /* Disconnection Complete */
hci->event_mask[0] |= 0x80; /* Encryption Change */
hci->event_mask[1] |= 0x08; /* Read Remote Version Information Complete */
hci->event_mask[1] |= 0x20; /* Command Complete */
hci->event_mask[1] |= 0x40; /* Command Status */
hci->event_mask[1] |= 0x80; /* Hardware Error */
hci->event_mask[2] |= 0x04; /* Number of Completed Packets */
hci->event_mask[3] |= 0x02; /* Data Buffer Overflow */
hci->event_mask[5] |= 0x80; /* Encryption Key Refresh Complete */
//hci->event_mask[7] |= 0x20; /* LE Meta Event */
hci->manufacturer = 0x003f; /* Bluetooth SIG (63) */
memset(hci->commands, 0, sizeof(hci->commands));
hci->commands[0] |= 0x20; /* Disconnect */
//hci->commands[2] |= 0x80; /* Read Remote Version Information */
hci->commands[5] |= 0x40; /* Set Event Mask */
hci->commands[5] |= 0x80; /* Reset */
//hci->commands[10] |= 0x04; /* Read Transmit Power Level */
hci->commands[14] |= 0x08; /* Read Local Version Information */
hci->commands[14] |= 0x10; /* Read Local Supported Commands */
hci->commands[14] |= 0x20; /* Read Local Supported Features */
hci->commands[14] |= 0x80; /* Read Buffer Size */
hci->commands[15] |= 0x02; /* Read BD ADDR */
//hci->commands[15] |= 0x20; /* Read RSSI */
hci->commands[22] |= 0x04; /* Set Event Mask Page 2 */
hci->commands[25] |= 0x01; /* LE Set Event Mask */
hci->commands[25] |= 0x02; /* LE Read Buffer Size */
hci->commands[25] |= 0x04; /* LE Read Local Supported Features */
hci->commands[25] |= 0x10; /* LE Set Random Address */
hci->commands[25] |= 0x20; /* LE Set Advertising Parameters */
hci->commands[25] |= 0x40; /* LE Read Advertising Channel TX Power */
hci->commands[25] |= 0x80; /* LE Set Advertising Data */
hci->commands[26] |= 0x01; /* LE Set Scan Response Data */
hci->commands[26] |= 0x02; /* LE Set Advertise Enable */
hci->commands[26] |= 0x04; /* LE Set Scan Parameters */
hci->commands[26] |= 0x08; /* LE Set Scan Enable */
hci->commands[26] |= 0x10; /* LE Create Connection */
hci->commands[26] |= 0x20; /* LE Create Connection Cancel */
hci->commands[26] |= 0x40; /* LE Read White List Size */
hci->commands[26] |= 0x80; /* LE Clear White List */
hci->commands[27] |= 0x01; /* LE Add Device To White List */
hci->commands[27] |= 0x02; /* LE Remove Device From White List */
//hci->commands[27] |= 0x04; /* LE Connection Update */
//hci->commands[27] |= 0x08; /* LE Set Host Channel Classification */
//hci->commands[27] |= 0x10; /* LE Read Channel Map */
//hci->commands[27] |= 0x20; /* LE Read Remote Used Features */
hci->commands[27] |= 0x40; /* LE Encrypt */
hci->commands[27] |= 0x80; /* LE Rand */
//hci->commands[28] |= 0x01; /* LE Start Encryption */
//hci->commands[28] |= 0x02; /* LE Long Term Key Request Reply */
//hci->commands[28] |= 0x04; /* LE Long Term Key Request Negative Reply */
hci->commands[28] |= 0x08; /* LE Read Supported States */
//hci->commands[28] |= 0x10; /* LE Receiver Test */
//hci->commands[28] |= 0x20; /* LE Transmitter Test */
//hci->commands[28] |= 0x40; /* LE Test End */
//hci->commands[33] |= 0x10; /* LE Remote Connection Parameter Request Reply */
//hci->commands[33] |= 0x20; /* LE Remote Connection Parameter Request Negative Reply */
hci->commands[33] |= 0x40; /* LE Set Data Length */
hci->commands[33] |= 0x80; /* LE Read Suggested Default Data Length */
hci->commands[34] |= 0x01; /* LE Write Suggested Default Data Length */
hci->commands[34] |= 0x02; /* LE Read Local P-256 Public Key */
hci->commands[34] |= 0x04; /* LE Generate DHKey */
hci->commands[34] |= 0x08; /* LE Add Device To Resolving List */
hci->commands[34] |= 0x10; /* LE Remove Device From Resolving List */
hci->commands[34] |= 0x20; /* LE Clear Resolving List */
hci->commands[34] |= 0x40; /* LE Read Resolving List Size */
hci->commands[34] |= 0x80; /* LE Read Peer Resolvable Address */
hci->commands[35] |= 0x01; /* LE Read Local Resolvable Address */
hci->commands[35] |= 0x02; /* LE Set Address Resolution Enable */
hci->commands[35] |= 0x04; /* LE Set Resolvable Private Address Timeout */
hci->commands[35] |= 0x08; /* LE Read Maximum Data Length */
memset(hci->features, 0, sizeof(hci->features));
hci->features[4] |= 0x20; /* BR/EDR Not Supported */
hci->features[4] |= 0x40; /* LE Supported */
memset(hci->bdaddr, 0, sizeof(hci->bdaddr));
memset(hci->le_event_mask, 0, sizeof(hci->le_event_mask));
hci->le_event_mask[0] |= 0x01; /* LE Connection Complete */
hci->le_event_mask[0] |= 0x02; /* LE Advertising Report */
hci->le_event_mask[0] |= 0x04; /* LE Connection Update Complete */
hci->le_event_mask[0] |= 0x08; /* LE Read Remote Used Features Complete */
hci->le_event_mask[0] |= 0x10; /* LE Long Term Key Request */
//hci->le_event_mask[0] |= 0x20; /* LE Remote Connection Parameter Request */
//hci->le_event_mask[0] |= 0x40; /* LE Data Length Change */
//hci->le_event_mask[0] |= 0x80; /* LE Read Local P-256 Public Key Complete */
//hci->le_event_mask[1] |= 0x01; /* LE Generate DHKey Complete */
//hci->le_event_mask[1] |= 0x02; /* LE Enhanced Connection Complete */
//hci->le_event_mask[1] |= 0x04; /* LE Direct Advertising Report */
hci->le_mtu = 64;
hci->le_max_pkt = 1;
memset(hci->le_features, 0, sizeof(hci->le_features));
hci->le_features[0] |= 0x01; /* LE Encryption */
//hci->le_features[0] |= 0x02; /* Connection Parameter Request Procedure */
//hci->le_features[0] |= 0x04; /* Extended Reject Indication */
//hci->le_features[0] |= 0x08; /* Slave-initiated Features Exchange */
hci->le_features[0] |= 0x10; /* LE Ping */
hci->le_features[0] |= 0x20; /* LE Data Packet Length Extension */
hci->le_features[0] |= 0x40; /* LL Privacy */
hci->le_features[0] |= 0x80; /* Extended Scanner Filter Policies */
memset(hci->le_random_addr, 0, sizeof(hci->le_random_addr));
hci->le_adv_min_interval = 0x0800;
hci->le_adv_max_interval = 0x0800;
hci->le_adv_type = 0x00;
hci->le_adv_own_addr_type = 0x00;
hci->le_adv_direct_addr_type = 0x00;
memset(hci->le_adv_direct_addr, 0, 6);
hci->le_adv_channel_map = 0x07;
hci->le_adv_filter_policy = 0x00;
hci->le_adv_tx_power = 0;
memset(hci->le_adv_data, 0, sizeof(hci->le_adv_data));
hci->le_adv_data_len = 0;
memset(hci->le_scan_rsp_data, 0, sizeof(hci->le_scan_rsp_data));
hci->le_scan_rsp_data_len = 0;
hci->le_adv_enable = 0x00;
hci->le_scan_type = 0x00; /* Passive Scanning */
hci->le_scan_interval = 0x0010; /* 10 ms */
hci->le_scan_window = 0x0010; /* 10 ms */
hci->le_scan_own_addr_type = 0x00; /* Public Device Address */
hci->le_scan_filter_policy = 0x00;
hci->le_scan_enable = 0x00;
hci->le_scan_filter_dup = 0x00;
hci->le_conn_enable = 0x00;
hci->le_white_list_size = WHITE_LIST_SIZE;
clear_white_list(hci);
memset(hci->le_states, 0, sizeof(hci->le_states));
hci->le_states[0] |= 0x01; /* Non-connectable Advertising */
hci->le_states[0] |= 0x02; /* Scannable Advertising */
hci->le_states[0] |= 0x04; /* Connectable Advertising */
hci->le_states[0] |= 0x08; /* High Duty Cycle Directed Advertising */
hci->le_states[0] |= 0x10; /* Passive Scanning */
hci->le_states[0] |= 0x20; /* Active Scanning */
hci->le_states[0] |= 0x40; /* Initiating + Connection (Master Role) */
hci->le_states[0] |= 0x80; /* Connection (Slave Role) */
hci->le_states[1] |= 0x01; /* Passive Scanning +
* Non-connectable Advertising */
hci->le_default_tx_len = DEFAULT_TX_LEN;
hci->le_default_tx_time = DEFAULT_TX_TIME;
memset(hci->le_local_sk256, 0, sizeof(hci->le_local_sk256));
hci->le_resolv_list_size = RESOLV_LIST_SIZE;
clear_resolv_list(hci);
hci->le_resolv_enable = 0x00;
hci->le_resolv_timeout = 0x0384; /* 900 secs or 15 minutes */
}
static void clear_scan_cache(struct bt_le *hci)
{
memset(hci->scan_cache, 0, sizeof(hci->scan_cache));
hci->scan_cache_count = 0;
}
static bool add_to_scan_cache(struct bt_le *hci, uint8_t addr_type,
const uint8_t addr[6])
{
int i;
for (i = 0; i < hci->scan_cache_count; i++) {
if (hci->scan_cache[i].addr_type == addr_type &&
!memcmp(hci->scan_cache[i].addr, addr, 6))
return false;
}
if (hci->scan_cache_count >= SCAN_CACHE_SIZE)
return true;
hci->scan_cache[hci->scan_cache_count].addr_type = addr_type;
memcpy(hci->scan_cache[hci->scan_cache_count].addr, addr, 6);
hci->scan_cache_count++;
return true;
}
static void send_event(struct bt_le *hci, uint8_t event,
void *data, uint8_t size)
{
uint8_t type = BT_H4_EVT_PKT;
struct bt_hci_evt_hdr hdr;
struct iovec iov[3];
int iovcnt;
hdr.evt = event;
hdr.plen = size;
iov[0].iov_base = &type;
iov[0].iov_len = 1;
iov[1].iov_base = &hdr;
iov[1].iov_len = sizeof(hdr);
if (size > 0) {
iov[2].iov_base = data;
iov[2].iov_len = size;
iovcnt = 3;
} else
iovcnt = 2;
if (writev(hci->vhci_fd, iov, iovcnt) < 0)
fprintf(stderr, "Write to /dev/vhci failed (%m)\n");
}
static void send_adv_pkt(struct bt_le *hci, uint8_t channel)
{
struct bt_phy_pkt_adv pkt;
memset(&pkt, 0, sizeof(pkt));
pkt.chan_idx = channel;
pkt.pdu_type = hci->le_adv_type;
pkt.tx_addr_type = hci->le_adv_own_addr_type;
switch (hci->le_adv_own_addr_type) {
case 0x00:
case 0x02:
memcpy(pkt.tx_addr, hci->bdaddr, 6);
break;
case 0x01:
case 0x03:
memcpy(pkt.tx_addr, hci->le_random_addr, 6);
break;
}
pkt.rx_addr_type = hci->le_adv_direct_addr_type;
memcpy(pkt.rx_addr, hci->le_adv_direct_addr, 6);
pkt.adv_data_len = hci->le_adv_data_len;
pkt.scan_rsp_len = hci->le_scan_rsp_data_len;
bt_phy_send_vector(hci->phy, BT_PHY_PKT_ADV, &pkt, sizeof(pkt),
hci->le_adv_data, pkt.adv_data_len,
hci->le_scan_rsp_data, pkt.scan_rsp_len);
}
static unsigned int get_adv_delay(void)
{
/* The advertising delay is a pseudo-random value with a range
* of 0 ms to 10 ms generated for each advertising event.
*/
srand(time(NULL));
return (rand() % 11);
}
static void adv_timeout_callback(int id, void *user_data)
{
struct bt_le *hci = user_data;
unsigned int msec, min_msec, max_msec;
if (hci->le_adv_channel_map & 0x01)
send_adv_pkt(hci, 37);
if (hci->le_adv_channel_map & 0x02)
send_adv_pkt(hci, 38);
if (hci->le_adv_channel_map & 0x04)
send_adv_pkt(hci, 39);
min_msec = (hci->le_adv_min_interval * 625) / 1000;
max_msec = (hci->le_adv_max_interval * 625) / 1000;
msec = ((min_msec + max_msec) / 2) + get_adv_delay();
if (mainloop_modify_timeout(id, msec) < 0) {
fprintf(stderr, "Setting advertising timeout failed\n");
hci->le_adv_enable = 0x00;
}
}
static bool start_adv(struct bt_le *hci)
{
unsigned int msec;
if (hci->adv_timeout_id >= 0)
return false;
msec = ((hci->le_adv_min_interval * 625) / 1000) + get_adv_delay();
hci->adv_timeout_id = mainloop_add_timeout(msec, adv_timeout_callback,
hci, NULL);
if (hci->adv_timeout_id < 0)
return false;
return true;
}
static bool stop_adv(struct bt_le *hci)
{
if (hci->adv_timeout_id < 0)
return false;
mainloop_remove_timeout(hci->adv_timeout_id);
hci->adv_timeout_id = -1;
return true;
}
static void scan_timeout_callback(int id, void *user_data)
{
struct bt_le *hci = user_data;
unsigned int msec;
if (hci->le_scan_window == hci->le_scan_interval ||
!hci->scan_window_active) {
msec = (hci->le_scan_window * 625) / 1000;
hci->scan_window_active = true;
hci->scan_chan_idx++;
if (hci->scan_chan_idx > 39)
hci->scan_chan_idx = 37;
} else {
msec = ((hci->le_scan_interval -
hci->le_scan_window) * 625) / 1000;
hci->scan_window_active = false;
}
if (mainloop_modify_timeout(id, msec) < 0) {
fprintf(stderr, "Setting scanning timeout failed\n");
hci->le_scan_enable = 0x00;
hci->scan_window_active = false;
}
}
static bool start_scan(struct bt_le *hci)
{
unsigned int msec;
if (hci->scan_timeout_id >= 0)
return false;
msec = (hci->le_scan_window * 625) / 1000;
hci->scan_timeout_id = mainloop_add_timeout(msec, scan_timeout_callback,
hci, NULL);
if (hci->scan_timeout_id < 0)
return false;
hci->scan_window_active = true;
hci->scan_chan_idx = 37;
return true;
}
static bool stop_scan(struct bt_le *hci)
{
if (hci->scan_timeout_id < 0)
return false;
mainloop_remove_timeout(hci->scan_timeout_id);
hci->scan_timeout_id = -1;
hci->scan_window_active = false;
return true;
}
static void cmd_complete(struct bt_le *hci, uint16_t opcode,
const void *data, uint8_t len)
{
struct bt_hci_evt_cmd_complete *cc;
void *pkt_data;
pkt_data = alloca(sizeof(*cc) + len);
if (!pkt_data)
return;
cc = pkt_data;
cc->ncmd = 0x01;
cc->opcode = cpu_to_le16(opcode);
if (len > 0)
memcpy(pkt_data + sizeof(*cc), data, len);
send_event(hci, BT_HCI_EVT_CMD_COMPLETE, pkt_data, sizeof(*cc) + len);
}
static void cmd_status(struct bt_le *hci, uint8_t status, uint16_t opcode)
{
struct bt_hci_evt_cmd_status cs;
cs.status = status;
cs.ncmd = 0x01;
cs.opcode = cpu_to_le16(opcode);
send_event(hci, BT_HCI_EVT_CMD_STATUS, &cs, sizeof(cs));
}
static void le_meta_event(struct bt_le *hci, uint8_t event,
void *data, uint8_t len)
{
void *pkt_data;
if (!(hci->event_mask[7] & 0x20))
return;
pkt_data = alloca(1 + len);
if (!pkt_data)
return;
((uint8_t *) pkt_data)[0] = event;
if (len > 0)
memcpy(pkt_data + 1, data, len);
send_event(hci, BT_HCI_EVT_LE_META_EVENT, pkt_data, 1 + len);
}
static void cmd_disconnect(struct bt_le *hci, const void *data, uint8_t size)
{
cmd_status(hci, BT_HCI_ERR_UNKNOWN_CONN_ID, BT_HCI_CMD_DISCONNECT);
}
static void cmd_set_event_mask(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_set_event_mask *cmd = data;
uint8_t status;
memcpy(hci->event_mask, cmd->mask, 8);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_SET_EVENT_MASK, &status, sizeof(status));
}
static void cmd_reset(struct bt_le *hci, const void *data, uint8_t size)
{
uint8_t status;
stop_adv(hci);
stop_scan(hci);
reset_defaults(hci);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_RESET, &status, sizeof(status));
}
static void cmd_set_event_mask_page2(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_set_event_mask_page2 *cmd = data;
uint8_t status;
memcpy(hci->event_mask + 8, cmd->mask, 8);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_SET_EVENT_MASK_PAGE2,
&status, sizeof(status));
}
static void cmd_read_local_version(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_read_local_version rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.hci_ver = 0x08;
rsp.hci_rev = cpu_to_le16(0x0000);
rsp.lmp_ver = 0x08;
rsp.manufacturer = cpu_to_le16(hci->manufacturer);
rsp.lmp_subver = cpu_to_le16(0x0000);
cmd_complete(hci, BT_HCI_CMD_READ_LOCAL_VERSION, &rsp, sizeof(rsp));
}
static void cmd_read_local_commands(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_read_local_commands rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
memcpy(rsp.commands, hci->commands, 64);
cmd_complete(hci, BT_HCI_CMD_READ_LOCAL_COMMANDS, &rsp, sizeof(rsp));
}
static void cmd_read_local_features(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_read_local_features rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
memcpy(rsp.features, hci->features, 8);
cmd_complete(hci, BT_HCI_CMD_READ_LOCAL_FEATURES, &rsp, sizeof(rsp));
}
static void cmd_read_buffer_size(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_read_buffer_size rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.acl_mtu = cpu_to_le16(0x0000);
rsp.sco_mtu = 0x00;
rsp.acl_max_pkt = cpu_to_le16(0x0000);
rsp.sco_max_pkt = cpu_to_le16(0x0000);
cmd_complete(hci, BT_HCI_CMD_READ_BUFFER_SIZE, &rsp, sizeof(rsp));
}
static void cmd_read_bd_addr(struct bt_le *hci, const void *data, uint8_t size)
{
struct bt_hci_rsp_read_bd_addr rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
memcpy(rsp.bdaddr, hci->bdaddr, 6);
cmd_complete(hci, BT_HCI_CMD_READ_BD_ADDR, &rsp, sizeof(rsp));
}
static void cmd_le_set_event_mask(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_event_mask *cmd = data;
uint8_t status;
memcpy(hci->le_event_mask, cmd->mask, 8);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_EVENT_MASK,
&status, sizeof(status));
}
static void cmd_le_read_buffer_size(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_buffer_size rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.le_mtu = cpu_to_le16(hci->le_mtu);
rsp.le_max_pkt = hci->le_max_pkt;
cmd_complete(hci, BT_HCI_CMD_LE_READ_BUFFER_SIZE, &rsp, sizeof(rsp));
}
static void cmd_le_read_local_features(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_local_features rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
memcpy(rsp.features, hci->le_features, 8);
cmd_complete(hci, BT_HCI_CMD_LE_READ_LOCAL_FEATURES,
&rsp, sizeof(rsp));
}
static void cmd_le_set_random_address(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_random_address *cmd = data;
uint8_t status;
memcpy(hci->le_random_addr, cmd->addr, 6);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_RANDOM_ADDRESS,
&status, sizeof(status));
}
static void cmd_le_set_adv_parameters(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_adv_parameters *cmd = data;
uint16_t min_interval, max_interval;
uint8_t status;
if (hci->le_adv_enable == 0x01) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
min_interval = le16_to_cpu(cmd->min_interval);
max_interval = le16_to_cpu(cmd->max_interval);
/* Valid range for advertising type is 0x00 to 0x03 */
switch (cmd->type) {
case 0x00: /* ADV_IND */
/* Range for advertising interval min is 0x0020 to 0x4000 */
if (min_interval < 0x0020 || min_interval > 0x4000) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Range for advertising interval max is 0x0020 to 0x4000 */
if (max_interval < 0x0020 || max_interval > 0x4000) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Advertising interval max shall be less or equal */
if (min_interval > max_interval) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
break;
case 0x01: /* ADV_DIRECT_IND */
/* Range for direct address type is 0x00 to 0x01 */
if (cmd->direct_addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
break;
case 0x02: /* ADV_SCAN_IND */
case 0x03: /* ADV_NONCONN_IND */
/* Range for advertising interval min is 0x00a0 to 0x4000 */
if (min_interval < 0x00a0 || min_interval > 0x4000) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Range for advertising interval max is 0x00a0 to 0x4000 */
if (max_interval < 0x00a0 || max_interval > 0x4000) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Advertising interval min shall be less or equal */
if (min_interval > max_interval) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
break;
default:
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Valid range for own address type is 0x00 to 0x03 */
if (cmd->own_addr_type > 0x03) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Valid range for advertising channel map is 0x01 to 0x07 */
if (cmd->channel_map < 0x01 || cmd->channel_map > 0x07) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
/* Valid range for advertising filter policy is 0x00 to 0x03 */
if (cmd->filter_policy > 0x03) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_PARAMETERS);
return;
}
hci->le_adv_min_interval = min_interval;
hci->le_adv_max_interval = max_interval;
hci->le_adv_type = cmd->type;
hci->le_adv_own_addr_type = cmd->own_addr_type;
hci->le_adv_direct_addr_type = cmd->direct_addr_type;
memcpy(hci->le_adv_direct_addr, cmd->direct_addr, 6);
hci->le_adv_channel_map = cmd->channel_map;
hci->le_adv_filter_policy = cmd->filter_policy;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_ADV_PARAMETERS,
&status, sizeof(status));
}
static void cmd_le_read_adv_tx_power(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_adv_tx_power rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.level = hci->le_adv_tx_power;
cmd_complete(hci, BT_HCI_CMD_LE_READ_ADV_TX_POWER, &rsp, sizeof(rsp));
}
static void cmd_le_set_adv_data(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_adv_data *cmd = data;
uint8_t status;
/* Valid range for advertising data length is 0x00 to 0x1f */
if (cmd->len > 0x1f) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_DATA);
return;
}
hci->le_adv_data_len = cmd->len;
memcpy(hci->le_adv_data, cmd->data, 31);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_ADV_DATA, &status, sizeof(status));
}
static void cmd_le_set_scan_rsp_data(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_scan_rsp_data *cmd = data;
uint8_t status;
/* Valid range for scan response data length is 0x00 to 0x1f */
if (cmd->len > 0x1f) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_RSP_DATA);
return;
}
hci->le_scan_rsp_data_len = cmd->len;
memcpy(hci->le_scan_rsp_data, cmd->data, 31);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_SCAN_RSP_DATA,
&status, sizeof(status));
}
static void cmd_le_set_adv_enable(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_adv_enable *cmd = data;
uint8_t status;
bool result;
/* Valid range for advertising enable is 0x00 to 0x01 */
if (cmd->enable > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_ADV_ENABLE);
return;
}
if (cmd->enable == hci->le_adv_enable) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_SET_ADV_ENABLE);
return;
}
if (cmd->enable == 0x01)
result = start_adv(hci);
else
result = stop_adv(hci);
if (!result) {
cmd_status(hci, BT_HCI_ERR_UNSPECIFIED_ERROR,
BT_HCI_CMD_LE_SET_ADV_ENABLE);
return;
}
hci->le_adv_enable = cmd->enable;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_ADV_ENABLE,
&status, sizeof(status));
}
static void cmd_le_set_scan_parameters(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_scan_parameters *cmd = data;
uint16_t interval, window;
uint8_t status;
if (hci->le_scan_enable == 0x01) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
interval = le16_to_cpu(cmd->interval);
window = le16_to_cpu(cmd->window);
/* Valid range for scan type is 0x00 to 0x01 */
if (cmd->type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
/* Valid range for scan interval is 0x0004 to 0x4000 */
if (interval < 0x0004 || interval > 0x4000) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
/* Valid range for scan window is 0x0004 to 0x4000 */
if (window < 0x0004 || window > 0x4000) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
/* Scan window shall be less or equal than scan interval */
if (window > interval) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
/* Valid range for own address type is 0x00 to 0x03 */
if (cmd->own_addr_type > 0x03) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
/* Valid range for scanning filter policy is 0x00 to 0x03 */
if (cmd->filter_policy > 0x03) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_PARAMETERS);
return;
}
hci->le_scan_type = cmd->type;
hci->le_scan_interval = interval;
hci->le_scan_window = window;
hci->le_scan_own_addr_type = cmd->own_addr_type;
hci->le_scan_filter_policy = cmd->filter_policy;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_SCAN_PARAMETERS,
&status, sizeof(status));
}
static void cmd_le_set_scan_enable(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_scan_enable *cmd = data;
uint8_t status;
bool result;
/* Valid range for scan enable is 0x00 to 0x01 */
if (cmd->enable > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_ENABLE);
return;
}
/* Valid range for filter duplicates is 0x00 to 0x01 */
if (cmd->filter_dup > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_SCAN_ENABLE);
return;
}
if (cmd->enable == hci->le_scan_enable) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_SET_SCAN_ENABLE);
return;
}
clear_scan_cache(hci);
if (cmd->enable == 0x01)
result = start_scan(hci);
else
result = stop_scan(hci);
if (!result) {
cmd_status(hci, BT_HCI_ERR_UNSPECIFIED_ERROR,
BT_HCI_CMD_LE_SET_SCAN_ENABLE);
return;
}
hci->le_scan_enable = cmd->enable;
hci->le_scan_filter_dup = cmd->filter_dup;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_SCAN_ENABLE,
&status, sizeof(status));
}
static void cmd_le_create_conn(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_create_conn *cmd = data;
if (hci->le_conn_enable == 0x01) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_CREATE_CONN);
return;
}
/* Valid range for peer address type is 0x00 to 0x03 */
if (cmd->peer_addr_type > 0x03) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_CREATE_CONN);
return;
}
/* Valid range for own address type is 0x00 to 0x03 */
if (cmd->own_addr_type > 0x03) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_CREATE_CONN);
return;
}
hci->le_conn_peer_addr_type = cmd->peer_addr_type;
memcpy(hci->le_conn_peer_addr, cmd->peer_addr, 6);
hci->le_conn_own_addr_type = cmd->own_addr_type;
hci->le_conn_enable = 0x01;
cmd_status(hci, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_LE_CREATE_CONN);
}
static void cmd_le_create_conn_cancel(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_evt_le_conn_complete evt;
uint8_t status;
if (hci->le_conn_enable == 0x00) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_CREATE_CONN_CANCEL);
return;
}
hci->le_conn_enable = 0x00;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_CREATE_CONN_CANCEL,
&status, sizeof(status));
evt.status = BT_HCI_ERR_UNKNOWN_CONN_ID;
evt.handle = cpu_to_le16(0x0000);
evt.role = 0x00;
evt.peer_addr_type = 0x00;
memset(evt.peer_addr, 0, 6);
evt.interval = cpu_to_le16(0x0000);
evt.latency = cpu_to_le16(0x0000);
evt.supv_timeout = cpu_to_le16(0x0000);
evt.clock_accuracy = 0x00;
if (hci->le_event_mask[0] & 0x01)
le_meta_event(hci, BT_HCI_EVT_LE_CONN_COMPLETE,
&evt, sizeof(evt));
}
static void cmd_le_read_white_list_size(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_white_list_size rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.size = hci->le_white_list_size;
cmd_complete(hci, BT_HCI_CMD_LE_READ_WHITE_LIST_SIZE,
&rsp, sizeof(rsp));
}
static void cmd_le_clear_white_list(struct bt_le *hci,
const void *data, uint8_t size)
{
uint8_t status;
clear_white_list(hci);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_CLEAR_WHITE_LIST,
&status, sizeof(status));
}
static void cmd_le_add_to_white_list(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_add_to_white_list *cmd = data;
uint8_t status;
bool exists = false;
int i, pos = -1;
/* Valid range for address type is 0x00 to 0x01 */
if (cmd->addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_ADD_TO_WHITE_LIST);
return;
}
for (i = 0; i < hci->le_white_list_size; i++) {
if (hci->le_white_list[i][0] == cmd->addr_type &&
!memcmp(&hci->le_white_list[i][1],
cmd->addr, 6)) {
exists = true;
break;
} else if (pos < 0 && hci->le_white_list[i][0] == 0xff)
pos = i;
}
if (exists) {
cmd_status(hci, BT_HCI_ERR_UNSPECIFIED_ERROR,
BT_HCI_CMD_LE_ADD_TO_WHITE_LIST);
return;
}
if (pos < 0) {
cmd_status(hci, BT_HCI_ERR_MEM_CAPACITY_EXCEEDED,
BT_HCI_CMD_LE_ADD_TO_WHITE_LIST);
return;
}
hci->le_white_list[pos][0] = cmd->addr_type;
memcpy(&hci->le_white_list[pos][1], cmd->addr, 6);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_ADD_TO_WHITE_LIST,
&status, sizeof(status));
}
static void cmd_le_remove_from_white_list(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_remove_from_white_list *cmd = data;
uint8_t status;
int i, pos = -1;
/* Valid range for address type is 0x00 to 0x01 */
if (cmd->addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_REMOVE_FROM_WHITE_LIST);
return;
}
for (i = 0; i < hci->le_white_list_size; i++) {
if (hci->le_white_list[i][0] == cmd->addr_type &&
!memcmp(&hci->le_white_list[i][1],
cmd->addr, 6)) {
pos = i;
break;
}
}
if (pos < 0) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_REMOVE_FROM_WHITE_LIST);
return;
}
hci->le_white_list[pos][0] = 0xff;
memset(&hci->le_white_list[pos][1], 0, 6);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_REMOVE_FROM_WHITE_LIST,
&status, sizeof(status));
}
static void cmd_le_encrypt(struct bt_le *hci, const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_encrypt *cmd = data;
struct bt_hci_rsp_le_encrypt rsp;
if (!bt_crypto_e(hci->crypto, cmd->key, cmd->plaintext, rsp.data)) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_ENCRYPT);
return;
}
rsp.status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_ENCRYPT, &rsp, sizeof(rsp));
}
static void cmd_le_rand(struct bt_le *hci, const void *data, uint8_t size)
{
struct bt_hci_rsp_le_rand rsp;
uint8_t value[8];
if (!bt_crypto_random_bytes(hci->crypto, value, 8)) {
cmd_status(hci, BT_HCI_ERR_COMMAND_DISALLOWED,
BT_HCI_CMD_LE_RAND);
return;
}
rsp.status = BT_HCI_ERR_SUCCESS;
memcpy(&rsp.number, value, 8);
cmd_complete(hci, BT_HCI_CMD_LE_RAND, &rsp, sizeof(rsp));
}
static void cmd_le_read_supported_states(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_supported_states rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
memcpy(rsp.states, hci->le_states, 8);
cmd_complete(hci, BT_HCI_CMD_LE_READ_SUPPORTED_STATES,
&rsp, sizeof(rsp));
}
static void cmd_le_set_data_length(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_data_length *cmd = data;
struct bt_hci_rsp_le_set_data_length rsp;
uint16_t handle, tx_len, tx_time;
handle = le16_to_cpu(cmd->handle);
tx_len = le16_to_cpu(cmd->tx_len);
tx_time = le16_to_cpu(cmd->tx_time);
/* Valid range for connection handle is 0x0000 to 0x0eff */
if (handle > 0x0eff) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_DATA_LENGTH);
return;
}
/* Valid range for suggested max TX octets is 0x001b to 0x00fb */
if (tx_len < 0x001b || tx_len > 0x00fb) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_DATA_LENGTH);
return;
}
/* Valid range for suggested max TX time is 0x0148 to 0x0848 */
if (tx_time < 0x0148 || tx_time > 0x0848) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_DATA_LENGTH);
return;
}
/* Max TX len and time shall be less or equal supported */
if (tx_len > MAX_TX_LEN || tx_time > MAX_TX_TIME) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_DATA_LENGTH);
return;
}
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.handle = cpu_to_le16(handle);
cmd_complete(hci, BT_HCI_CMD_LE_SET_DATA_LENGTH, &rsp, sizeof(rsp));
}
static void cmd_le_read_default_data_length(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_default_data_length rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.tx_len = cpu_to_le16(hci->le_default_tx_len);
rsp.tx_time = cpu_to_le16(hci->le_default_tx_time);
cmd_complete(hci, BT_HCI_CMD_LE_READ_DEFAULT_DATA_LENGTH,
&rsp, sizeof(rsp));
}
static void cmd_le_write_default_data_length(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_write_default_data_length *cmd = data;
uint16_t tx_len, tx_time;
uint8_t status;
tx_len = le16_to_cpu(cmd->tx_len);
tx_time = le16_to_cpu(cmd->tx_time);
/* Valid range for suggested max TX octets is 0x001b to 0x00fb */
if (tx_len < 0x001b || tx_len > 0x00fb) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_WRITE_DEFAULT_DATA_LENGTH);
return;
}
/* Valid range for suggested max TX time is 0x0148 to 0x0848 */
if (tx_time < 0x0148 || tx_time > 0x0848) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_WRITE_DEFAULT_DATA_LENGTH);
return;
}
/* Suggested max TX len and time shall be less or equal supported */
if (tx_len > MAX_TX_LEN || tx_time > MAX_TX_TIME) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_WRITE_DEFAULT_DATA_LENGTH);
return;
}
hci->le_default_tx_len = tx_len;
hci->le_default_tx_time = tx_time;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_WRITE_DEFAULT_DATA_LENGTH,
&status, sizeof(status));
}
static void cmd_le_read_local_pk256(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_evt_le_read_local_pk256_complete evt;
cmd_status(hci, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_LE_READ_LOCAL_PK256);
evt.status = BT_HCI_ERR_SUCCESS;
ecc_make_key(evt.local_pk256, hci->le_local_sk256);
if (hci->le_event_mask[0] & 0x80)
le_meta_event(hci, BT_HCI_EVT_LE_READ_LOCAL_PK256_COMPLETE,
&evt, sizeof(evt));
}
static void cmd_le_generate_dhkey(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_generate_dhkey *cmd = data;
struct bt_hci_evt_le_generate_dhkey_complete evt;
cmd_status(hci, BT_HCI_ERR_SUCCESS, BT_HCI_CMD_LE_GENERATE_DHKEY);
evt.status = BT_HCI_ERR_SUCCESS;
ecdh_shared_secret(cmd->remote_pk256, hci->le_local_sk256, evt.dhkey);
if (hci->le_event_mask[1] & 0x01)
le_meta_event(hci, BT_HCI_EVT_LE_GENERATE_DHKEY_COMPLETE,
&evt, sizeof(evt));
}
static void cmd_le_add_to_resolv_list(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_add_to_resolv_list *cmd = data;
uint8_t status;
bool exists = false;
int i, pos = -1;
/* Valid range for address type is 0x00 to 0x01 */
if (cmd->addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_ADD_TO_RESOLV_LIST);
return;
}
for (i = 0; i < hci->le_resolv_list_size; i++) {
if (hci->le_resolv_list[i][0] == cmd->addr_type &&
!memcmp(&hci->le_resolv_list[i][1],
cmd->addr, 6)) {
exists = true;
break;
} else if (pos < 0 && hci->le_resolv_list[i][0] == 0xff)
pos = i;
}
if (exists) {
cmd_status(hci, BT_HCI_ERR_UNSPECIFIED_ERROR,
BT_HCI_CMD_LE_ADD_TO_RESOLV_LIST);
return;
}
if (pos < 0) {
cmd_status(hci, BT_HCI_ERR_MEM_CAPACITY_EXCEEDED,
BT_HCI_CMD_LE_ADD_TO_RESOLV_LIST);
return;
}
hci->le_resolv_list[pos][0] = cmd->addr_type;
memcpy(&hci->le_resolv_list[pos][1], cmd->addr, 6);
memcpy(&hci->le_resolv_list[pos][7], cmd->peer_irk, 16);
memcpy(&hci->le_resolv_list[pos][23], cmd->local_irk, 16);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_ADD_TO_RESOLV_LIST,
&status, sizeof(status));
}
static void cmd_le_remove_from_resolv_list(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_remove_from_resolv_list *cmd = data;
uint8_t status;
int i, pos = -1;
/* Valid range for address type is 0x00 to 0x01 */
if (cmd->addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_REMOVE_FROM_RESOLV_LIST);
return;
}
for (i = 0; i < hci->le_resolv_list_size; i++) {
if (hci->le_resolv_list[i][0] == cmd->addr_type &&
!memcmp(&hci->le_resolv_list[i][1],
cmd->addr, 6)) {
pos = i;
break;
}
}
if (pos < 0) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_REMOVE_FROM_RESOLV_LIST);
return;
}
hci->le_resolv_list[pos][0] = 0xff;
memset(&hci->le_resolv_list[pos][1], 0, 38);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_REMOVE_FROM_RESOLV_LIST,
&status, sizeof(status));
}
static void cmd_le_clear_resolv_list(struct bt_le *hci,
const void *data, uint8_t size)
{
uint8_t status;
clear_resolv_list(hci);
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_CLEAR_RESOLV_LIST,
&status, sizeof(status));
}
static void cmd_le_read_resolv_list_size(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_resolv_list_size rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.size = hci->le_resolv_list_size;
cmd_complete(hci, BT_HCI_CMD_LE_READ_RESOLV_LIST_SIZE,
&rsp, sizeof(rsp));
}
static void cmd_le_read_peer_resolv_addr(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_read_peer_resolv_addr *cmd = data;
struct bt_hci_rsp_le_read_peer_resolv_addr rsp;
/* Valid range for address type is 0x00 to 0x01 */
if (cmd->addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_READ_PEER_RESOLV_ADDR);
return;
}
rsp.status = BT_HCI_ERR_UNKNOWN_CONN_ID;
memset(rsp.addr, 0, 6);
cmd_complete(hci, BT_HCI_CMD_LE_READ_PEER_RESOLV_ADDR,
&rsp, sizeof(rsp));
}
static void cmd_le_read_local_resolv_addr(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_read_local_resolv_addr *cmd = data;
struct bt_hci_rsp_le_read_local_resolv_addr rsp;
/* Valid range for address type is 0x00 to 0x01 */
if (cmd->addr_type > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_READ_LOCAL_RESOLV_ADDR);
return;
}
rsp.status = BT_HCI_ERR_UNKNOWN_CONN_ID;
memset(rsp.addr, 0, 6);
cmd_complete(hci, BT_HCI_CMD_LE_READ_LOCAL_RESOLV_ADDR,
&rsp, sizeof(rsp));
}
static void cmd_le_set_resolv_enable(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_resolv_enable *cmd = data;
uint8_t status;
/* Valid range for address resolution enable is 0x00 to 0x01 */
if (cmd->enable > 0x01) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_RESOLV_ENABLE);
return;
}
hci->le_resolv_enable = cmd->enable;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_RESOLV_ENABLE,
&status, sizeof(status));
}
static void cmd_le_set_resolv_timeout(struct bt_le *hci,
const void *data, uint8_t size)
{
const struct bt_hci_cmd_le_set_resolv_timeout *cmd = data;
uint16_t timeout;
uint8_t status;
timeout = le16_to_cpu(cmd->timeout);
/* Valid range for RPA timeout is 0x0001 to 0xa1b8 */
if (timeout < 0x0001 || timeout > 0xa1b8) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS,
BT_HCI_CMD_LE_SET_RESOLV_TIMEOUT);
return;
}
hci->le_resolv_timeout = timeout;
status = BT_HCI_ERR_SUCCESS;
cmd_complete(hci, BT_HCI_CMD_LE_SET_RESOLV_TIMEOUT,
&status, sizeof(status));
}
static void cmd_le_read_max_data_length(struct bt_le *hci,
const void *data, uint8_t size)
{
struct bt_hci_rsp_le_read_max_data_length rsp;
rsp.status = BT_HCI_ERR_SUCCESS;
rsp.max_tx_len = cpu_to_le16(MAX_TX_LEN);
rsp.max_tx_time = cpu_to_le16(MAX_TX_TIME);
rsp.max_rx_len = cpu_to_le16(MAX_RX_LEN);
rsp.max_rx_time = cpu_to_le16(MAX_RX_TIME);
cmd_complete(hci, BT_HCI_CMD_LE_READ_MAX_DATA_LENGTH,
&rsp, sizeof(rsp));
}
static const struct {
uint16_t opcode;
void (*func) (struct bt_le *hci, const void *data, uint8_t size);
uint8_t size;
bool fixed;
} cmd_table[] = {
{ BT_HCI_CMD_DISCONNECT, cmd_disconnect, 3, true },
{ BT_HCI_CMD_SET_EVENT_MASK, cmd_set_event_mask, 8, true },
{ BT_HCI_CMD_RESET, cmd_reset, 0, true },
{ BT_HCI_CMD_SET_EVENT_MASK_PAGE2, cmd_set_event_mask_page2, 8, true },
{ BT_HCI_CMD_READ_LOCAL_VERSION, cmd_read_local_version, 0, true },
{ BT_HCI_CMD_READ_LOCAL_COMMANDS, cmd_read_local_commands, 0, true },
{ BT_HCI_CMD_READ_LOCAL_FEATURES, cmd_read_local_features, 0, true },
{ BT_HCI_CMD_READ_BUFFER_SIZE, cmd_read_buffer_size, 0, true },
{ BT_HCI_CMD_READ_BD_ADDR, cmd_read_bd_addr, 0, true },
{ BT_HCI_CMD_LE_SET_EVENT_MASK,
cmd_le_set_event_mask, 8, true },
{ BT_HCI_CMD_LE_READ_BUFFER_SIZE,
cmd_le_read_buffer_size, 0, true },
{ BT_HCI_CMD_LE_READ_LOCAL_FEATURES,
cmd_le_read_local_features, 0, true },
{ BT_HCI_CMD_LE_SET_RANDOM_ADDRESS,
cmd_le_set_random_address, 6, true },
{ BT_HCI_CMD_LE_SET_ADV_PARAMETERS,
cmd_le_set_adv_parameters, 15, true },
{ BT_HCI_CMD_LE_READ_ADV_TX_POWER,
cmd_le_read_adv_tx_power, 0, true },
{ BT_HCI_CMD_LE_SET_ADV_DATA,
cmd_le_set_adv_data, 32, true },
{ BT_HCI_CMD_LE_SET_SCAN_RSP_DATA,
cmd_le_set_scan_rsp_data, 32, true },
{ BT_HCI_CMD_LE_SET_ADV_ENABLE,
cmd_le_set_adv_enable, 1, true },
{ BT_HCI_CMD_LE_SET_SCAN_PARAMETERS,
cmd_le_set_scan_parameters, 7, true },
{ BT_HCI_CMD_LE_SET_SCAN_ENABLE,
cmd_le_set_scan_enable, 2, true },
{ BT_HCI_CMD_LE_CREATE_CONN,
cmd_le_create_conn, 25, true },
{ BT_HCI_CMD_LE_CREATE_CONN_CANCEL,
cmd_le_create_conn_cancel, 0, true },
{ BT_HCI_CMD_LE_READ_WHITE_LIST_SIZE,
cmd_le_read_white_list_size, 0, true },
{ BT_HCI_CMD_LE_CLEAR_WHITE_LIST,
cmd_le_clear_white_list, 0, true },
{ BT_HCI_CMD_LE_ADD_TO_WHITE_LIST,
cmd_le_add_to_white_list, 7, true },
{ BT_HCI_CMD_LE_REMOVE_FROM_WHITE_LIST,
cmd_le_remove_from_white_list, 7, true },
{ BT_HCI_CMD_LE_ENCRYPT, cmd_le_encrypt, 32, true },
{ BT_HCI_CMD_LE_RAND, cmd_le_rand, 0, true },
{ BT_HCI_CMD_LE_READ_SUPPORTED_STATES,
cmd_le_read_supported_states, 0, true },
{ BT_HCI_CMD_LE_SET_DATA_LENGTH,
cmd_le_set_data_length, 6, true },
{ BT_HCI_CMD_LE_READ_DEFAULT_DATA_LENGTH,
cmd_le_read_default_data_length, 0, true },
{ BT_HCI_CMD_LE_WRITE_DEFAULT_DATA_LENGTH,
cmd_le_write_default_data_length, 4, true },
{ BT_HCI_CMD_LE_READ_LOCAL_PK256,
cmd_le_read_local_pk256, 0, true },
{ BT_HCI_CMD_LE_GENERATE_DHKEY,
cmd_le_generate_dhkey, 64, true },
{ BT_HCI_CMD_LE_ADD_TO_RESOLV_LIST,
cmd_le_add_to_resolv_list, 39, true },
{ BT_HCI_CMD_LE_REMOVE_FROM_RESOLV_LIST,
cmd_le_remove_from_resolv_list, 7, true },
{ BT_HCI_CMD_LE_CLEAR_RESOLV_LIST,
cmd_le_clear_resolv_list, 0, true },
{ BT_HCI_CMD_LE_READ_RESOLV_LIST_SIZE,
cmd_le_read_resolv_list_size, 0, true },
{ BT_HCI_CMD_LE_READ_PEER_RESOLV_ADDR,
cmd_le_read_peer_resolv_addr, 7, true },
{ BT_HCI_CMD_LE_READ_LOCAL_RESOLV_ADDR,
cmd_le_read_local_resolv_addr, 7, true },
{ BT_HCI_CMD_LE_SET_RESOLV_ENABLE,
cmd_le_set_resolv_enable, 1, true },
{ BT_HCI_CMD_LE_SET_RESOLV_TIMEOUT,
cmd_le_set_resolv_timeout, 2, true },
{ BT_HCI_CMD_LE_READ_MAX_DATA_LENGTH,
cmd_le_read_max_data_length, 0, true },
{ }
};
static void process_command(struct bt_le *hci, const void *data, size_t size)
{
const struct bt_hci_cmd_hdr *hdr = data;
uint16_t opcode;
unsigned int i;
if (size < sizeof(*hdr))
return;
data += sizeof(*hdr);
size -= sizeof(*hdr);
opcode = le16_to_cpu(hdr->opcode);
if (hdr->plen != size) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS, opcode);
return;
}
for (i = 0; cmd_table[i].func; i++) {
if (cmd_table[i].opcode != opcode)
continue;
if ((cmd_table[i].fixed && size != cmd_table[i].size) ||
size < cmd_table[i].size) {
cmd_status(hci, BT_HCI_ERR_INVALID_PARAMETERS, opcode);
return;
}
cmd_table[i].func(hci, data, size);
return;
}
cmd_status(hci, BT_HCI_ERR_UNKNOWN_COMMAND, opcode);
}
static void vhci_read_callback(int fd, uint32_t events, void *user_data)
{
struct bt_le *hci = user_data;
unsigned char buf[4096];
ssize_t len;
if (events & (EPOLLERR | EPOLLHUP))
return;
len = read(hci->vhci_fd, buf, sizeof(buf));
if (len < 1)
return;
switch (buf[0]) {
case BT_H4_CMD_PKT:
process_command(hci, buf + 1, len - 1);
break;
}
}
static void phy_recv_callback(uint16_t type, const void *data,
size_t size, void *user_data)
{
struct bt_le *hci = user_data;
switch (type) {
case BT_PHY_PKT_ADV:
if (!(hci->le_event_mask[0] & 0x02))
return;
if (hci->scan_window_active) {
const struct bt_phy_pkt_adv *pkt = data;
uint8_t buf[100];
struct bt_hci_evt_le_adv_report *evt = (void *) buf;
uint8_t tx_addr_type, tx_addr[6];
if (hci->scan_chan_idx != pkt->chan_idx)
break;
resolve_peer_addr(hci, pkt->tx_addr_type, pkt->tx_addr,
&tx_addr_type, tx_addr);
if (hci->le_scan_filter_policy == 0x01 ||
hci->le_scan_filter_policy == 0x03) {
if (!is_in_white_list(hci, tx_addr_type,
tx_addr))
break;
}
if (hci->le_scan_filter_dup) {
if (!add_to_scan_cache(hci, tx_addr_type,
tx_addr))
break;
}
memset(buf, 0, sizeof(buf));
evt->num_reports = 0x01;
evt->event_type = pkt->pdu_type;
evt->addr_type = tx_addr_type;
memcpy(evt->addr, tx_addr, 6);
evt->data_len = pkt->adv_data_len;
memcpy(buf + sizeof(*evt), data + sizeof(*pkt),
pkt->adv_data_len);
le_meta_event(hci, BT_HCI_EVT_LE_ADV_REPORT, buf,
sizeof(*evt) + pkt->adv_data_len + 1);
if (hci->le_scan_type == 0x00)
break;
memset(buf, 0, sizeof(buf));
evt->num_reports = 0x01;
evt->event_type = 0x04;
evt->addr_type = tx_addr_type;
memcpy(evt->addr, tx_addr, 6);
evt->data_len = pkt->scan_rsp_len;
memcpy(buf + sizeof(*evt), data + sizeof(*pkt) +
pkt->adv_data_len,
pkt->scan_rsp_len);
le_meta_event(hci, BT_HCI_EVT_LE_ADV_REPORT, buf,
sizeof(*evt) + pkt->scan_rsp_len + 1);
}
break;
}
}
struct bt_le *bt_le_new(void)
{
unsigned char setup_cmd[2];
struct bt_le *hci;
hci = calloc(1, sizeof(*hci));
if (!hci)
return NULL;
hci->adv_timeout_id = -1;
hci->scan_timeout_id = -1;
hci->scan_window_active = false;
reset_defaults(hci);
hci->vhci_fd = open("/dev/vhci", O_RDWR);
if (hci->vhci_fd < 0) {
free(hci);
return NULL;
}
setup_cmd[0] = HCI_VENDOR_PKT;
setup_cmd[1] = HCI_BREDR;
if (write(hci->vhci_fd, setup_cmd, sizeof(setup_cmd)) < 0) {
close(hci->vhci_fd);
free(hci);
return NULL;
}
mainloop_add_fd(hci->vhci_fd, EPOLLIN, vhci_read_callback, hci, NULL);
hci->phy = bt_phy_new();
hci->crypto = bt_crypto_new();
bt_phy_register(hci->phy, phy_recv_callback, hci);
return bt_le_ref(hci);
}
struct bt_le *bt_le_ref(struct bt_le *hci)
{
if (!hci)
return NULL;
__sync_fetch_and_add(&hci->ref_count, 1);
return hci;
}
void bt_le_unref(struct bt_le *hci)
{
if (!hci)
return;
if (__sync_sub_and_fetch(&hci->ref_count, 1))
return;
stop_adv(hci);
bt_crypto_unref(hci->crypto);
bt_phy_unref(hci->phy);
mainloop_remove_fd(hci->vhci_fd);
close(hci->vhci_fd);
free(hci);
}
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