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hci.c
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hci.c
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/**
* @file hci.c
* @brief hci functions
* @author Gilbert Brault
* @copyright Gilbert Brault 2015
* the original work comes from bluez v5.39
* value add: documenting main features
*
*/
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2000-2001 Qualcomm Incorporated
* Copyright (C) 2002-2003 Maxim Krasnyansky <[email protected]>
* Copyright (C) 2002-2010 Marcel Holtmann <[email protected]>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; 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 <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <poll.h>
#include <sys/param.h>
#include <sys/uio.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include "bluetooth.h"
#include "hci.h"
#include "hci_lib.h"
#ifndef MIN
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#endif
typedef struct {
char *str;
unsigned int val;
} hci_map;
/**
* lookup the numeric code val into the hci_map m and return the matching string
*
* @param m pointer to the hci_map
* @param val code to match
* @return string matching the code (val) from the hci_map
*/
static char *hci_bit2str(hci_map *m, unsigned int val)
{
char *str = malloc(120);
char *ptr = str;
if (!str)
return NULL;
*ptr = 0;
while (m->str) {
if ((unsigned int) m->val & val)
ptr += sprintf(ptr, "%s ", m->str);
m++;
}
return str;
}
/**
* ored bits corresponding to comma separated commands matching the hci_map array
*
* @param map pointer to the hci_map array
* @param str commands, separated by commas for match in the hci_map array
* @param val ored bits (from the hci_map) of maching commands
*
* @return 1 val is set, 0
*/static int hci_str2bit(hci_map *map, char *str, unsigned int *val)
{
char *t, *ptr;
hci_map *m;
int set;
if (!str || !(str = ptr = strdup(str)))
return 0;
*val = set = 0;
while ((t = strsep(&ptr, ","))) {
for (m = map; m->str; m++) {
if (!strcasecmp(m->str, t)) {
*val |= (unsigned int) m->val;
set = 1;
}
}
}
free(str);
return set;
}
/**
* lookup the hci_map and find entry corresponding to val and return the corresponding string
*
* @param m hci_map pointer
* @param val val to match in the hci_map
* @return string mapped to the matching value or NULL if no matching
*/
static char *hci_uint2str(hci_map *m, unsigned int val)
{
char *str = malloc(50);
char *ptr = str;
if (!str)
return NULL;
*ptr = 0;
while (m->str) {
if ((unsigned int) m->val == val) {
ptr += sprintf(ptr, "%s", m->str);
break;
}
m++;
}
return str;
}
/**
* lookup a command string in the hci_map array and return the corresponding code
*
* @param map pointer to the hci_map array
* @param str command to match
* @param val returned corresponding code
*
* @return 1 val is set 0 if no matching string
*/
static int hci_str2uint(hci_map *map, char *str, unsigned int *val)
{
char *t, *ptr;
hci_map *m;
int set = 0;
if (!str)
return 0;
str = ptr = strdup(str);
while ((t = strsep(&ptr, ","))) {
for (m = map; m->str; m++) {
if (!strcasecmp(m->str,t)) {
*val = (unsigned int) m->val;
set = 1;
break;
}
}
}
free(str);
return set;
}
/**
* return a string corresponding to the bus code (see HCI bus types in hci.h)
*
* @param bus bus code
* @return string corresponding to the bus code (NULL if error)
*/
char *hci_bustostr(int bus)
{
switch (bus) {
case HCI_VIRTUAL:
return "VIRTUAL";
case HCI_USB:
return "USB";
case HCI_PCCARD:
return "PCCARD";
case HCI_UART:
return "UART";
case HCI_RS232:
return "RS232";
case HCI_PCI:
return "PCI";
case HCI_SDIO:
return "SDIO";
default:
return "UNKNOWN";
}
}
/**
* return the bus string according to the bus code (type)
*
* @param type bus code
* @return bus string (NULL if error)
*/
char *hci_dtypetostr(int type)
{
return hci_bustostr(type & 0x0f);
}
/**
* return the bluetooth type string give the code (see HCI controller types in hci.h)
*
* @param type HCI controller types
* @return corresponding string (NULL if error)
*/
char *hci_typetostr(int type)
{
switch (type) {
case HCI_BREDR:
return "BR/EDR";
case HCI_AMP:
return "AMP";
default:
return "UNKNOWN";
}
}
/* HCI dev flags mapping */
static hci_map dev_flags_map[] = {
{ "UP", HCI_UP },
{ "INIT", HCI_INIT },
{ "RUNNING", HCI_RUNNING },
{ "RAW", HCI_RAW },
{ "PSCAN", HCI_PSCAN },
{ "ISCAN", HCI_ISCAN },
{ "INQUIRY", HCI_INQUIRY },
{ "AUTH", HCI_AUTH },
{ "ENCRYPT", HCI_ENCRYPT },
{ NULL }
};
/**
* return the HCI device flags string given its code
*
* @param flags HCI device flags code
* @return HCI device flags string (NULL if error)
*/
char *hci_dflagstostr(uint32_t flags)
{
char *str = bt_malloc(50);
char *ptr = str;
hci_map *m = dev_flags_map;
if (!str)
return NULL;
*ptr = 0;
if (!hci_test_bit(HCI_UP, &flags))
ptr += sprintf(ptr, "DOWN ");
while (m->str) {
if (hci_test_bit(m->val, &flags))
ptr += sprintf(ptr, "%s ", m->str);
m++;
}
return str;
}
/* HCI packet type mapping */
static hci_map pkt_type_map[] = {
{ "DM1", HCI_DM1 },
{ "DM3", HCI_DM3 },
{ "DM5", HCI_DM5 },
{ "DH1", HCI_DH1 },
{ "DH3", HCI_DH3 },
{ "DH5", HCI_DH5 },
{ "HV1", HCI_HV1 },
{ "HV2", HCI_HV2 },
{ "HV3", HCI_HV3 },
{ "2-DH1", HCI_2DH1 },
{ "2-DH3", HCI_2DH3 },
{ "2-DH5", HCI_2DH5 },
{ "3-DH1", HCI_3DH1 },
{ "3-DH3", HCI_3DH3 },
{ "3-DH5", HCI_3DH5 },
{ NULL }
};
/* SCO (synchronous connection orientated) links */
static hci_map sco_ptype_map[] = {
{ "HV1", 0x0001 },
{ "HV2", 0x0002 },
{ "HV3", 0x0004 },
{ "EV3", HCI_EV3 },
{ "EV4", HCI_EV4 },
{ "EV5", HCI_EV5 },
{ "2-EV3", HCI_2EV3 },
{ "2-EV5", HCI_2EV5 },
{ "3-EV3", HCI_3EV3 },
{ "3-EV5", HCI_3EV5 },
{ NULL }
};
/**
* return the HCI packet type string given the code
*
* @param ptype HCI packet type
* @return HCI packet type string (NULL if error)
*/
char *hci_ptypetostr(unsigned int ptype)
{
return hci_bit2str(pkt_type_map, ptype);
}
/**
* return the HCI packet type code given the string
*
* @param str HCI packet type string
* @param val HCI packet type code
* @return 1 if found 0 error
*/
int hci_strtoptype(char *str, unsigned int *val)
{
return hci_str2bit(pkt_type_map, str, val);
}
/**
* return the SCO (synchronous connection orientated) links string given the code
*
* @param ptype SCO type code
* @return SCO string (NULL if error)
*/
char *hci_scoptypetostr(unsigned int ptype)
{
return hci_bit2str(sco_ptype_map, ptype);
}
/**
* return the SCO (synchronous connection orientated) links code given the string
*
* @param str SCO (synchronous connection orientated) links string
* @param val SCO (synchronous connection orientated) links code
* @return 1 match found 0 error
*/
int hci_strtoscoptype(char *str, unsigned int *val)
{
return hci_str2bit(sco_ptype_map, str, val);
}
/* Link policy mapping */
static hci_map link_policy_map[] = {
{ "NONE", 0 },
{ "RSWITCH", HCI_LP_RSWITCH },
{ "HOLD", HCI_LP_HOLD },
{ "SNIFF", HCI_LP_SNIFF },
{ "PARK", HCI_LP_PARK },
{ NULL }
};
/**
* return the Link policy mapping string given the code
*
* @param lp Link policy mapping code
* @return Link policy mapping string (NULL if error)
*/
char *hci_lptostr(unsigned int lp)
{
return hci_bit2str(link_policy_map, lp);
}
/**
* return Link policy mapping code given the string
*
* @param str Link policy mapping string
* @param val Link policy mapping code
* @return 1 match found 0 error
*/
int hci_strtolp(char *str, unsigned int *val)
{
return hci_str2bit(link_policy_map, str, val);
}
/* Link mode mapping */
static hci_map link_mode_map[] = {
{ "NONE", 0 },
{ "ACCEPT", HCI_LM_ACCEPT },
{ "MASTER", HCI_LM_MASTER },
{ "AUTH", HCI_LM_AUTH },
{ "ENCRYPT", HCI_LM_ENCRYPT },
{ "TRUSTED", HCI_LM_TRUSTED },
{ "RELIABLE", HCI_LM_RELIABLE },
{ "SECURE", HCI_LM_SECURE },
{ NULL }
};
/**
* return the Link mode mapping string given the code
*
* @param lm Link mode mapping code
* @return Link mode mapping string (NULL if error)
*/
char *hci_lmtostr(unsigned int lm)
{
char *s, *str = bt_malloc(50);
if (!str)
return NULL;
*str = 0;
if (!(lm & HCI_LM_MASTER))
strcpy(str, "SLAVE ");
s = hci_bit2str(link_mode_map, lm);
if (!s) {
bt_free(str);
return NULL;
}
strcat(str, s);
free(s);
return str;
}
/**
* retrun Link mode mapping code given the tring
*
* @param str Link mode mapping string
* @param val Link mode mapping code
* @return 1 match found, 0 error
*/
int hci_strtolm(char *str, unsigned int *val)
{
return hci_str2bit(link_mode_map, str, val);
}
/* Command mapping */
static hci_map commands_map[] = {
{ "Inquiry", 0 },
{ "Inquiry Cancel", 1 },
{ "Periodic Inquiry Mode", 2 },
{ "Exit Periodic Inquiry Mode", 3 },
{ "Create Connection", 4 },
{ "Disconnect", 5 },
{ "Add SCO Connection", 6 },
{ "Cancel Create Connection", 7 },
{ "Accept Connection Request", 8 },
{ "Reject Connection Request", 9 },
{ "Link Key Request Reply", 10 },
{ "Link Key Request Negative Reply", 11 },
{ "PIN Code Request Reply", 12 },
{ "PIN Code Request Negative Reply", 13 },
{ "Change Connection Packet Type", 14 },
{ "Authentication Requested", 15 },
{ "Set Connection Encryption", 16 },
{ "Change Connection Link Key", 17 },
{ "Master Link Key", 18 },
{ "Remote Name Request", 19 },
{ "Cancel Remote Name Request", 20 },
{ "Read Remote Supported Features", 21 },
{ "Read Remote Extended Features", 22 },
{ "Read Remote Version Information", 23 },
{ "Read Clock Offset", 24 },
{ "Read LMP Handle", 25 },
{ "Reserved", 26 },
{ "Reserved", 27 },
{ "Reserved", 28 },
{ "Reserved", 29 },
{ "Reserved", 30 },
{ "Reserved", 31 },
{ "Reserved", 32 },
{ "Hold Mode", 33 },
{ "Sniff Mode", 34 },
{ "Exit Sniff Mode", 35 },
{ "Park State", 36 },
{ "Exit Park State", 37 },
{ "QoS Setup", 38 },
{ "Role Discovery", 39 },
{ "Switch Role", 40 },
{ "Read Link Policy Settings", 41 },
{ "Write Link Policy Settings", 42 },
{ "Read Default Link Policy Settings", 43 },
{ "Write Default Link Policy Settings", 44 },
{ "Flow Specification", 45 },
{ "Set Event Mask", 46 },
{ "Reset", 47 },
{ "Set Event Filter", 48 },
{ "Flush", 49 },
{ "Read PIN Type", 50 },
{ "Write PIN Type", 51 },
{ "Create New Unit Key", 52 },
{ "Read Stored Link Key", 53 },
{ "Write Stored Link Key", 54 },
{ "Delete Stored Link Key", 55 },
{ "Write Local Name", 56 },
{ "Read Local Name", 57 },
{ "Read Connection Accept Timeout", 58 },
{ "Write Connection Accept Timeout", 59 },
{ "Read Page Timeout", 60 },
{ "Write Page Timeout", 61 },
{ "Read Scan Enable", 62 },
{ "Write Scan Enable", 63 },
{ "Read Page Scan Activity", 64 },
{ "Write Page Scan Activity", 65 },
{ "Read Inquiry Scan Activity", 66 },
{ "Write Inquiry Scan Activity", 67 },
{ "Read Authentication Enable", 68 },
{ "Write Authentication Enable", 69 },
{ "Read Encryption Mode", 70 },
{ "Write Encryption Mode", 71 },
{ "Read Class Of Device", 72 },
{ "Write Class Of Device", 73 },
{ "Read Voice Setting", 74 },
{ "Write Voice Setting", 75 },
{ "Read Automatic Flush Timeout", 76 },
{ "Write Automatic Flush Timeout", 77 },
{ "Read Num Broadcast Retransmissions", 78 },
{ "Write Num Broadcast Retransmissions", 79 },
{ "Read Hold Mode Activity", 80 },
{ "Write Hold Mode Activity", 81 },
{ "Read Transmit Power Level", 82 },
{ "Read Synchronous Flow Control Enable", 83 },
{ "Write Synchronous Flow Control Enable", 84 },
{ "Set Host Controller To Host Flow Control", 85 },
{ "Host Buffer Size", 86 },
{ "Host Number Of Completed Packets", 87 },
{ "Read Link Supervision Timeout", 88 },
{ "Write Link Supervision Timeout", 89 },
{ "Read Number of Supported IAC", 90 },
{ "Read Current IAC LAP", 91 },
{ "Write Current IAC LAP", 92 },
{ "Read Page Scan Period Mode", 93 },
{ "Write Page Scan Period Mode", 94 },
{ "Read Page Scan Mode", 95 },
{ "Write Page Scan Mode", 96 },
{ "Set AFH Channel Classification", 97 },
{ "Reserved", 98 },
{ "Reserved", 99 },
{ "Read Inquiry Scan Type", 100 },
{ "Write Inquiry Scan Type", 101 },
{ "Read Inquiry Mode", 102 },
{ "Write Inquiry Mode", 103 },
{ "Read Page Scan Type", 104 },
{ "Write Page Scan Type", 105 },
{ "Read AFH Channel Assessment Mode", 106 },
{ "Write AFH Channel Assessment Mode", 107 },
{ "Reserved", 108 },
{ "Reserved", 109 },
{ "Reserved", 110 },
{ "Reserved", 111 },
{ "Reserved", 112 },
{ "Reserved", 113 },
{ "Reserved", 114 },
{ "Read Local Version Information", 115 },
{ "Read Local Supported Commands", 116 },
{ "Read Local Supported Features", 117 },
{ "Read Local Extended Features", 118 },
{ "Read Buffer Size", 119 },
{ "Read Country Code", 120 },
{ "Read BD ADDR", 121 },
{ "Read Failed Contact Counter", 122 },
{ "Reset Failed Contact Counter", 123 },
{ "Get Link Quality", 124 },
{ "Read RSSI", 125 },
{ "Read AFH Channel Map", 126 },
{ "Read BD Clock", 127 },
{ "Read Loopback Mode", 128 },
{ "Write Loopback Mode", 129 },
{ "Enable Device Under Test Mode", 130 },
{ "Setup Synchronous Connection", 131 },
{ "Accept Synchronous Connection", 132 },
{ "Reject Synchronous Connection", 133 },
{ "Reserved", 134 },
{ "Reserved", 135 },
{ "Read Extended Inquiry Response", 136 },
{ "Write Extended Inquiry Response", 137 },
{ "Refresh Encryption Key", 138 },
{ "Reserved", 139 },
{ "Sniff Subrating", 140 },
{ "Read Simple Pairing Mode", 141 },
{ "Write Simple Pairing Mode", 142 },
{ "Read Local OOB Data", 143 },
{ "Read Inquiry Response Transmit Power Level", 144 },
{ "Write Inquiry Transmit Power Level", 145 },
{ "Read Default Erroneous Data Reporting", 146 },
{ "Write Default Erroneous Data Reporting", 147 },
{ "Reserved", 148 },
{ "Reserved", 149 },
{ "Reserved", 150 },
{ "IO Capability Request Reply", 151 },
{ "User Confirmation Request Reply", 152 },
{ "User Confirmation Request Negative Reply", 153 },
{ "User Passkey Request Reply", 154 },
{ "User Passkey Request Negative Reply", 155 },
{ "Remote OOB Data Request Reply", 156 },
{ "Write Simple Pairing Debug Mode", 157 },
{ "Enhanced Flush", 158 },
{ "Remote OOB Data Request Negative Reply", 159 },
{ "Reserved", 160 },
{ "Reserved", 161 },
{ "Send Keypress Notification", 162 },
{ "IO Capability Request Negative Reply", 163 },
{ "Read Encryption Key Size", 164 },
{ "Reserved", 165 },
{ "Reserved", 166 },
{ "Reserved", 167 },
{ "Create Physical Link", 168 },
{ "Accept Physical Link", 169 },
{ "Disconnect Physical Link", 170 },
{ "Create Logical Link", 171 },
{ "Accept Logical Link", 172 },
{ "Disconnect Logical Link", 173 },
{ "Logical Link Cancel", 174 },
{ "Flow Specification Modify", 175 },
{ "Read Logical Link Accept Timeout", 176 },
{ "Write Logical Link Accept Timeout", 177 },
{ "Set Event Mask Page 2", 178 },
{ "Read Location Data", 179 },
{ "Write Location Data", 180 },
{ "Read Local AMP Info", 181 },
{ "Read Local AMP_ASSOC", 182 },
{ "Write Remote AMP_ASSOC", 183 },
{ "Read Flow Control Mode", 184 },
{ "Write Flow Control Mode", 185 },
{ "Read Data Block Size", 186 },
{ "Reserved", 187 },
{ "Reserved", 188 },
{ "Enable AMP Receiver Reports", 189 },
{ "AMP Test End", 190 },
{ "AMP Test Command", 191 },
{ "Read Enhanced Transmit Power Level", 192 },
{ "Reserved", 193 },
{ "Read Best Effort Flush Timeout", 194 },
{ "Write Best Effort Flush Timeout", 195 },
{ "Short Range Mode", 196 },
{ "Read LE Host Support", 197 },
{ "Write LE Host Support", 198 },
{ "Reserved", 199 },
{ "LE Set Event Mask", 200 },
{ "LE Read Buffer Size", 201 },
{ "LE Read Local Supported Features", 202 },
{ "Reserved", 203 },
{ "LE Set Random Address", 204 },
{ "LE Set Advertising Parameters", 205 },
{ "LE Read Advertising Channel TX Power", 206 },
{ "LE Set Advertising Data", 207 },
{ "LE Set Scan Response Data", 208 },
{ "LE Set Advertise Enable", 209 },
{ "LE Set Scan Parameters", 210 },
{ "LE Set Scan Enable", 211 },
{ "LE Create Connection", 212 },
{ "LE Create Connection Cancel", 213 },
{ "LE Read White List Size", 214 },
{ "LE Clear White List", 215 },
{ "LE Add Device To White List", 216 },
{ "LE Remove Device From White List", 217 },
{ "LE Connection Update", 218 },
{ "LE Set Host Channel Classification", 219 },
{ "LE Read Channel Map", 220 },
{ "LE Read Remote Used Features", 221 },
{ "LE Encrypt", 222 },
{ "LE Rand", 223 },
{ "LE Start Encryption", 224 },
{ "LE Long Term Key Request Reply", 225 },
{ "LE Long Term Key Request Negative Reply", 226 },
{ "LE Read Supported States", 227 },
{ "LE Receiver Test", 228 },
{ "LE Transmitter Test", 229 },
{ "LE Test End", 230 },
{ "Reserved", 231 },
{ NULL }
};
/**
* translate a command code into an english sentence
*
* use the commands_map table which is an array of structures { "english sentence", command code }
*
* @param cmd command code value
* @return english sentence corresponding to the command code (NULL if error)
*/
char *hci_cmdtostr(unsigned int cmd)
{
return hci_uint2str(commands_map, cmd);
}
/**
* translate a byte array of bit "commands" into a series of corresponding english strings which is returned
*
* @param commands an array of bytes corresponding to a list of encoded commands
* @param pref prefix to add to str (if pref !=NULL pref will be the first concatenated string)
* @param width
* @return NULL if error else str which is a string of concatenated commands separated by /0
*/
char *hci_commandstostr(uint8_t *commands, char *pref, int width)
{
unsigned int maxwidth = width - 3;
hci_map *m;
char *off, *ptr, *str;
int size = 10;
m = commands_map;
while (m->str) {
if (commands[m->val / 8] & (1 << (m->val % 8)))
size += strlen(m->str) + (pref ? strlen(pref) : 0) + 3;
m++;
}
str = bt_malloc(size);
if (!str)
return NULL;
ptr = str; *ptr = '\0';
if (pref)
ptr += sprintf(ptr, "%s", pref);
off = ptr;
m = commands_map;
while (m->str) {
if (commands[m->val / 8] & (1 << (m->val % 8))) {
if (strlen(off) + strlen(m->str) > maxwidth) {
ptr += sprintf(ptr, "\n%s", pref ? pref : "");
off = ptr;
}
ptr += sprintf(ptr, "'%s' ", m->str);
}
m++;
}
return str;
}
/* Version mapping */
static hci_map ver_map[] = {
{ "1.0b", 0x00 },
{ "1.1", 0x01 },
{ "1.2", 0x02 },
{ "2.0", 0x03 },
{ "2.1", 0x04 },
{ "3.0", 0x05 },
{ "4.0", 0x06 },
{ "4.1", 0x07 },
{ "4.2", 0x08 },
{ NULL }
};
/**
* translate a version code into a mapping string
*
* @param ver version code
* @return mapping string (NULL if error)
*/
char *hci_vertostr(unsigned int ver)
{
return hci_uint2str(ver_map, ver);
}
/**
* return the version code given the string
*
* @param str version string
* @param ver version code
* @return 1 of match found, 0 error
*/
int hci_strtover(char *str, unsigned int *ver)
{
return hci_str2uint(ver_map, str, ver);
}
/**
* Link Manager Protocol version (same as hci) string given the code
*
* @param ver version code
* @return mapping string (NULL if error)
*/
char *lmp_vertostr(unsigned int ver)
{
return hci_uint2str(ver_map, ver);
}
/**
* Link Manager Protocol code given the string
*
* @param str version string
* @param ver version code
* @return 1 of match found, 0 error
*/
int lmp_strtover(char *str, unsigned int *ver)
{
return hci_str2uint(ver_map, str, ver);
}
static hci_map pal_map[] = {
{ "3.0", 0x01 },
{ NULL }
};
/**
* pal version string given code
*
* @param ver pal version code
* @return pal version string or NULL if error
*/
char *pal_vertostr(unsigned int ver)
{
return hci_uint2str(pal_map, ver);
}
/**
* pal version code given string
*
* @param str pal version string
* @param ver pal version code
* @return 1 pal version code is set 0 error
*/
int pal_strtover(char *str, unsigned int *ver)
{
return hci_str2uint(pal_map, str, ver);
}
/* LMP features mapping */
static hci_map lmp_features_map[8][9] = {
{ /* Byte 0 */
{ "<3-slot packets>", LMP_3SLOT }, /* Bit 0 */
{ "<5-slot packets>", LMP_5SLOT }, /* Bit 1 */
{ "<encryption>", LMP_ENCRYPT }, /* Bit 2 */
{ "<slot offset>", LMP_SOFFSET }, /* Bit 3 */
{ "<timing accuracy>", LMP_TACCURACY }, /* Bit 4 */
{ "<role switch>", LMP_RSWITCH }, /* Bit 5 */
{ "<hold mode>", LMP_HOLD }, /* Bit 6 */
{ "<sniff mode>", LMP_SNIFF }, /* Bit 7 */
{ NULL }
},
{ /* Byte 1 */
{ "<park state>", LMP_PARK }, /* Bit 0 */
{ "<RSSI>", LMP_RSSI }, /* Bit 1 */
{ "<channel quality>", LMP_QUALITY }, /* Bit 2 */
{ "<SCO link>", LMP_SCO }, /* Bit 3 */
{ "<HV2 packets>", LMP_HV2 }, /* Bit 4 */
{ "<HV3 packets>", LMP_HV3 }, /* Bit 5 */
{ "<u-law log>", LMP_ULAW }, /* Bit 6 */
{ "<A-law log>", LMP_ALAW }, /* Bit 7 */
{ NULL }
},
{ /* Byte 2 */
{ "<CVSD>", LMP_CVSD }, /* Bit 0 */
{ "<paging scheme>", LMP_PSCHEME }, /* Bit 1 */
{ "<power control>", LMP_PCONTROL }, /* Bit 2 */
{ "<transparent SCO>", LMP_TRSP_SCO }, /* Bit 3 */
{ "<broadcast encrypt>",LMP_BCAST_ENC }, /* Bit 7 */
{ NULL }
},
{ /* Byte 3 */
{ "<no. 24>", 0x01 }, /* Bit 0 */
{ "<EDR ACL 2 Mbps>", LMP_EDR_ACL_2M }, /* Bit 1 */
{ "<EDR ACL 3 Mbps>", LMP_EDR_ACL_3M }, /* Bit 2 */
{ "<enhanced iscan>", LMP_ENH_ISCAN }, /* Bit 3 */
{ "<interlaced iscan>", LMP_ILACE_ISCAN }, /* Bit 4 */
{ "<interlaced pscan>", LMP_ILACE_PSCAN }, /* Bit 5 */
{ "<inquiry with RSSI>",LMP_RSSI_INQ }, /* Bit 6 */
{ "<extended SCO>", LMP_ESCO }, /* Bit 7 */
{ NULL }
},
{ /* Byte 4 */
{ "<EV4 packets>", LMP_EV4 }, /* Bit 0 */
{ "<EV5 packets>", LMP_EV5 }, /* Bit 1 */
{ "<no. 34>", 0x04 }, /* Bit 2 */
{ "<AFH cap. slave>", LMP_AFH_CAP_SLV }, /* Bit 3 */
{ "<AFH class. slave>", LMP_AFH_CLS_SLV }, /* Bit 4 */
{ "<BR/EDR not supp.>", LMP_NO_BREDR }, /* Bit 5 */
{ "<LE support>", LMP_LE }, /* Bit 6 */
{ "<3-slot EDR ACL>", LMP_EDR_3SLOT }, /* Bit 7 */
{ NULL }
},
{ /* Byte 5 */
{ "<5-slot EDR ACL>", LMP_EDR_5SLOT }, /* Bit 0 */
{ "<sniff subrating>", LMP_SNIFF_SUBR }, /* Bit 1 */
{ "<pause encryption>", LMP_PAUSE_ENC }, /* Bit 2 */
{ "<AFH cap. master>", LMP_AFH_CAP_MST }, /* Bit 3 */
{ "<AFH class. master>",LMP_AFH_CLS_MST }, /* Bit 4 */
{ "<EDR eSCO 2 Mbps>", LMP_EDR_ESCO_2M }, /* Bit 5 */
{ "<EDR eSCO 3 Mbps>", LMP_EDR_ESCO_3M }, /* Bit 6 */
{ "<3-slot EDR eSCO>", LMP_EDR_3S_ESCO }, /* Bit 7 */
{ NULL }
},
{ /* Byte 6 */
{ "<extended inquiry>", LMP_EXT_INQ }, /* Bit 0 */
{ "<LE and BR/EDR>", LMP_LE_BREDR }, /* Bit 1 */
{ "<no. 50>", 0x04 }, /* Bit 2 */
{ "<simple pairing>", LMP_SIMPLE_PAIR }, /* Bit 3 */
{ "<encapsulated PDU>", LMP_ENCAPS_PDU }, /* Bit 4 */
{ "<err. data report>", LMP_ERR_DAT_REP }, /* Bit 5 */
{ "<non-flush flag>", LMP_NFLUSH_PKTS }, /* Bit 6 */
{ "<no. 55>", 0x80 }, /* Bit 7 */
{ NULL }
},
{ /* Byte 7 */
{ "<LSTO>", LMP_LSTO }, /* Bit 1 */
{ "<inquiry TX power>", LMP_INQ_TX_PWR }, /* Bit 1 */
{ "<EPC>", LMP_EPC }, /* Bit 2 */
{ "<no. 59>", 0x08 }, /* Bit 3 */
{ "<no. 60>", 0x10 }, /* Bit 4 */
{ "<no. 61>", 0x20 }, /* Bit 5 */
{ "<no. 62>", 0x40 }, /* Bit 6 */
{ "<extended features>",LMP_EXT_FEAT }, /* Bit 7 */
{ NULL }
},
};
/**
* Link Manager Protocol feature string given code
*
* @param features Link Manager Protocol feature code
* @param pref prefix
* @param width
* @return Link Manager Protocol string or NULL if error
*/
char *lmp_featurestostr(uint8_t *features, char *pref, int width)
{
unsigned int maxwidth = width - 1;
char *off, *ptr, *str;
int i, size = 10;
for (i = 0; i < 8; i++) {
hci_map *m = lmp_features_map[i];
while (m->str) {
if (m->val & features[i])
size += strlen(m->str) +
(pref ? strlen(pref) : 0) + 1;
m++;
}
}
str = bt_malloc(size);
if (!str)
return NULL;
ptr = str; *ptr = '\0';
if (pref)
ptr += sprintf(ptr, "%s", pref);
off = ptr;
for (i = 0; i < 8; i++) {
hci_map *m = lmp_features_map[i];
while (m->str) {
if (m->val & features[i]) {
if (strlen(off) + strlen(m->str) > maxwidth) {
ptr += sprintf(ptr, "\n%s",
pref ? pref : "");
off = ptr;
}
ptr += sprintf(ptr, "%s ", m->str);