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packet-h4bcm.c
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packet-h4bcm.c
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/* packet-h4bcm.c
* Routines for Bluetooth H4 Broadcom vendor specific additions
* Copyright 2019, Jiska Classen / Secure Mobile Networking Lab
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <epan/packet.h>
#include <epan/prefs.h>
#include <string.h>
/* type definitions for Broadcom diagnostics */
#define DIA_LM_SENT 0x00
#define DIA_LM_RECV 0x01
#define DIA_MEM_PEEK_RESP 0x03
#define DIA_MEM_DUMP_RESP 0x04
#define DIA_TEST_COMPL 0x0a
#define DIA_MEM_POKE_RESP 0x11
#define DIA_CPU_LOAD_RESP 0x15
#define DIA_ACL_BR_RESP 0x16
#define DIA_ACL_EDR_RESP 0x17
#define DIA_AUX_RESP 0x18
#define DIA_ACL_UNKN1_RESP 0x1a
#define DIA_ACL_UNKN2_RESP 0x1b
#define DIA_CON_RESP 0x1f
#define DIA_LE_SENT 0x80
#define DIA_LE_RECV 0x81
#define DIA_ACL_BR_RESET 0xb9
#define DIA_ACL_BR_GET 0xc1
#define DIA_ACL_EDR_GET 0xc2
#define DIA_AUX_GET 0xc3
#define DIA_ACL_UNKN1_GET 0xc5
#define DIA_ACL_UNKN2_GET 0xc6
#define DIA_CON_GET 0xcf
#define DIA_LM_ENABLE 0xf0
#define DIA_MEM_PEEK_GET 0xf1
#define DIA_MEM_POKE_GET 0xf2
#define DIA_MEM_DUMP_GET 0xf3
#define DIA_PKT_TEST 0xf6
/* function prototypes */
void proto_reg_handoff_h4bcm(void);
/* initialize the protocol and registered fields */
static int proto_h4bcm = -1;
static int hf_h4bcm_type = -1;
static int hf_h4bcm_clock = -1;
static int hf_h4bcm_maclow = -1;
static int hf_h4bcm_pldhdr = -1;
static int hf_h4bcm_llid = -1;
static int hf_h4bcm_pldflow = -1;
static int hf_h4bcm_length = -1;
static int hf_h4bcm_payload = -1;
static int hf_h4bcm_lm_toggle = -1;
static int hf_h4bcm_stats_null_rcvd = -1;
static int hf_h4bcm_stats_poll_rcvd = -1;
static int hf_h4bcm_stats_dm1_rcvd = -1;
static int hf_h4bcm_stats_dh1_rcvd = -1;
static int hf_h4bcm_stats_dv_rcvd = -1;
static int hf_h4bcm_stats_aux1_rcvd = -1;
static int hf_h4bcm_stats_dm3_rcvd = -1;
static int hf_h4bcm_stats_dh3_rcvd = -1;
static int hf_h4bcm_stats_dm5_rcvd = -1;
static int hf_h4bcm_stats_dh5_rcvd = -1;
static int hf_h4bcm_stats_null_tx = -1;
static int hf_h4bcm_stats_poll_tx = -1;
static int hf_h4bcm_stats_dm1_tx = -1;
static int hf_h4bcm_stats_dh1_tx = -1;
static int hf_h4bcm_stats_dv_tx = -1;
static int hf_h4bcm_stats_aux1_tx = -1;
static int hf_h4bcm_stats_dm3_tx = -1;
static int hf_h4bcm_stats_dh3_tx = -1;
static int hf_h4bcm_stats_dm5_tx = -1;
static int hf_h4bcm_stats_dh5_tx = -1;
static int hf_h4bcm_stats_acl_rx = -1;
static int hf_h4bcm_stats_acl_tx = -1;
static int hf_h4bcm_stats_hec_err = -1;
static int hf_h4bcm_stats_crc_err = -1;
static int hf_h4bcm_stats_seqn_rep = -1;
static int hf_h4bcm_stats_soft_rst = -1;
static int hf_h4bcm_stats_test_tx = -1;;
static int hf_h4bcm_stats_test_rx = -1;
static int hf_h4bcm_stats_test_err = -1;
static int hf_h4bcm_stats_2dh1_rcvd = -1;
static int hf_h4bcm_stats_3dh1_rcvd = -1;
static int hf_h4bcm_stats_2dh3_rcvd = -1;
static int hf_h4bcm_stats_3dh3_rcvd = -1;
static int hf_h4bcm_stats_2dh5_rcvd = -1;
static int hf_h4bcm_stats_3dh5_rcvd = -1;
static int hf_h4bcm_stats_2dh1_tx = -1;
static int hf_h4bcm_stats_3dh1_tx = -1;
static int hf_h4bcm_stats_2dh3_tx = -1;
static int hf_h4bcm_stats_3dh3_tx = -1;
static int hf_h4bcm_stats_2dh5_tx = -1;
static int hf_h4bcm_stats_3dh5_tx = -1;
static int hf_h4bcm_le_ether = -1;
static int hf_h4bcm_le_handle = -1;
static int hf_h4bcm_le_opcode = -1;
static int hf_h4bcm_le_opcode_ext = -1;
static int hf_h4bcm_ll_version_ind_versnr = -1;
static int hf_h4bcm_ll_version_ind_compid = -1;
static int hf_h4bcm_ll_version_ind_subversnr = -1;
/* initialize the subtree pointers */
static gint ett_h4bcm = -1;
static gint ett_h4bcm_pldhdr = -1;
static gint ett_h4bcm_acl_br_stats = -1;
static gint ett_h4bcm_acl_edr_stats = -1;
/* subdissectors */
static dissector_handle_t btlmp_handle = NULL;
/* reversed Broadcom diagnostic types */
static const value_string h4bcm_types[] = {
{ DIA_LM_SENT, "LM Sent" },
{ DIA_LM_RECV, "LM Received" },
{ DIA_MEM_PEEK_RESP, "Memory Access Response to Peek" },
{ DIA_MEM_DUMP_RESP, "Memory Hex Dump Response" },
{ DIA_TEST_COMPL, "Reported Completed Test" },
{ DIA_MEM_POKE_RESP, "Memory Access Response to Poke" },
{ DIA_CPU_LOAD_RESP, "CPU Load" },
{ DIA_ACL_BR_RESP, "Basic Rate ACL Stats Data" },
{ DIA_ACL_EDR_RESP, "EDR ACL Stats Data" },
{ DIA_AUX_RESP, "Received Aux Response" },
{ DIA_ACL_UNKN1_RESP, "ACL Stats Data (Type 0x1A)" },
{ DIA_ACL_UNKN2_RESP, "ACL Stats Data (Type 0x1B)" },
{ DIA_CON_RESP, "Get Connection Response" },
{ DIA_LE_SENT, "LE LM Sent" }, // Low Energy LL Control PDU LMP Message
{ DIA_LE_RECV, "LE LM Received" },
{ DIA_ACL_BR_RESET, "Reset Basic Rate ACL Stats" }, // memclr(DHM_ACLPktStats)
{ DIA_ACL_BR_GET, "Get Basic Rate ACL Stats" },
{ DIA_ACL_EDR_GET, "Get EDR ACL Stats" },
{ DIA_ACL_UNKN1_GET, "Get ACL Stats (Type 0x1A)" }, // BTMUtil_Send_2045_ACL_Stats(0x1a, cmd)
{ DIA_ACL_UNKN2_GET, "Get ACL Stats (Type 0x1B)" },
{ DIA_AUX_GET, "Get Aux Stats"}, // BTMUtil_SendAuxStats
{ DIA_CON_GET, "Get Connection Stats"}, // ulp_send_connection_stats(0x1F)
{ DIA_LM_ENABLE, "Toggle LMP Logging" },
{ DIA_MEM_PEEK_GET, "Memory Peek" },
{ DIA_MEM_POKE_GET, "Memory Poke" },
{ DIA_MEM_DUMP_GET, "Memory Hex Dump" },
{ DIA_PKT_TEST, "BTMMstr_BBPktTest" },
};
static const value_string llid_codes[] = {
{ 0x0, "undefined" },
{ 0x1, "Continuation fragment of an L2CAP message (ACL-U)" },
{ 0x2, "Start of an L2CAP message or no fragmentation (ACL-U)" },
{ 0x3, "LMP message (ACL-C)" },
{ 0, NULL }
};
/* This table is needed due to Brodcoms wrong LMP length passing... */
static const int lmp_lengths[] = {
0, /* LMP_VSC */
2, /* LMP_NAME_REQ */
17, /* LMP_NAME_RES */
2, /* LMP_ACCEPTED */
3, /* LMP_NOT_ACCEPTED */
1, /* LMP_CLKOFFSET_REQ */
3, /* LMP_CLKOFFSET_RES */
2, /* LMP_DETACH */
17, /* LMP_IN_RAND */
17, /* LMP_COMB_KEY */
17, /* LMP_UNIT_KEY */
17, /* LMP_AU_RAND */
5, /* LMP_SRES */
17, /* LMP_TEMP_RAND */
17, /* LMP_TEMP_KEY */
2, /* LMP_ENCRYPTION_MODE_REQ */
2, /* LMP_ENCRYPTION_KEY_SIZE_REQ */
17, /* LMP_START_ENCRYPTION_REQ */
1, /* LMP_STOP_ENCRYPTION_REQ */
5, /* LMP_SWITCH_REQ */
7, /* LMP_HOLD */
7, /* LMP_HOLD_REQ */
10, /* LMP_SNIFF_REQ */
0,
1, /* LMP_UNSNIFF_REQ */
17, /* LMP_PARK_REQ */
0,
4, /* LMP_SET_BROADCAST_SCAN_WINDOW */
11, /* LMP_MODIFY_BEACON */
15, /* LMP_UNPARK_BD_ADDR_REQ */
13, /* LMP_UNPARK_PM_ADDR_REQ */
2, /* LMP_INCR_POWER_REQ */
2, /* LMP_DECR_POWER_REQ */
1, /* LMP_MAX_POWER */
1, /* LMP_MIN_POWER */
1, /* LMP_AUTO_RATE */
2, /* LMP_PREFERRED_RATE */
6, /* LMP_VERSION_REQ */
6, /* LMP_VERSION_RES */
9, /* LMP_FEATURES_REQ */
9, /* LMP_FEATURES_RES */
4, /* LMP_QUALITY_OF_SERVICE */
4, /* LMP_QUALITY_OF_SERVICE_REQ */
7, /* LMP_SCO_LINK_REQ */
3, /* LMP_REMOVE_SCO_LINK_REQ */
2, /* LMP_MAX_SLOT */
2, /* LMP_MAX_SLOT_REQ */
1, /* LMP_TIMING_ACCURACY_REQ */
3, /* LMP_TIMING_ACCURACY_RES */
1, /* LMP_SETUP_COMPLETE */
1, /* LMP_USE_SEMI_PERMANENT_KEY */
1, /* LMP_HOST_CONNECTION_REQ */
9, /* LMP_SLOT_OFFSET */
3, /* LMP_PAGE_MODE_REQ */
3, /* LMP_PAGE_SCAN_MODE_REQ */
3, /* LMP_SUPERVISION_TIMEOUT */
1, /* LMP_TEST_ACTIVATE */
10, /* LMP_TEST_CONTROL */
1, /* LMP_ENCRYPTION_KEY_SIZE_MASK_REQ */
3, /* LMP_ENCRYPTION_KEY_SIZE_MASK_RES */
16, /* LMP_SET_AFH */
4, /* LMP_ENCAPSULATED_HEADER */
17, /* LMP_ENCAPSULATED_PAYLOAD */
17, /* LMP_SIMPLE_PAIRING_CONFIRM */
17, /* LMP_SIMPLE_PAIRING_NUMBER */
17, /* LMP_DHKEY_CHECK */
};
static const int lmp_lengths_ext[] = {
0,
4, /* LMP_ACCEPTED_EXT */
5, /* LMP_NOT_ACCEPTED_EXT */
12, /* LMP_FEATURES_REQ_EXT */
12, /* LMP_FEATURES_RES_EXT */
0,
0,
0,
0,
0,
0,
3, /* LMP_PACKET_TYPE_TABLE_REQ */
16, /* LMP_ESCO_LINK_REQ */
4, /* LMP_REMOVE_ESCO_LINK_REQ */
0,
0,
7, /* LMP_CHANNEL_CLASSIFICATION_REQ */
12, /* LMP_CHANNEL_CLASSIFICATION */
0,
0,
0,
9, /* LMP_SNIFF_SUBRATING_REQ */
9, /* LMP_SNIFF_SUBRATING_RES */
2, /* LMP_PAUSE_ENCRYPTION_REQ */
2, /* LMP_RESUME_ENCRYPTION_REQ */
5, /* LMP_IO_CAPABILITY_REQ */
5, /* LMP_IO_CAPABILITY_RES */
2, /* LMP_NUMERIC_COMPARISON_FAILED */
2, /* LMP_PASSKEY_FAILED */
2, /* LMP_OOB_FAILED */
3, /* LMP_KEYPRESS_NOTIFICATION */
3, /* LMP_POWER_CONTROL_REQ */
3, /* LMP_POWER_CONTROL_RES */
};
/* Bluetooth 5.0 specification p. 2589 */
static const value_string lm_le_opcodes[] = {
{ 0x0, "LE LL Connection Update Request" },
{ 0x1, "LE LL Channel Map Request" },
{ 0x2, "LE LL Terminate Indication" },
{ 0x3, "LE LL Encryption Request" },
{ 0x4, "LE LL Encryption Response" },
{ 0x5, "LE LL Start Encryption Request" },
{ 0x6, "LE LL Start Encryption Response" },
{ 0x7, "LE LL Unknown Response" },
{ 0x8, "LE LL Feature Request" },
{ 0x9, "LE LL Feature Response" },
{ 0xa, "LE LL Pause Encryption Request" },
{ 0xb, "LE LL Pause Encryption Response" },
{ 0xc, "LE LL Version Indication" },
{ 0xd, "LE LL Reject Indication" },
{ 0xe, "LE LL Slave Feture Request" },
{ 0xf, "LE LL Connection Parameter Request" },
{ 0x10, "LE LL Connection Parameter Response" },
{ 0x11, "LE LL Extended Reject Indication" },
{ 0x12, "LE LL Ping Request" },
{ 0x13, "LE LL Ping Response" },
{ 0x14, "LE LL Length Request" },
{ 0x15, "LE LL Length Response" },
{ 0x16, "LE LL Update Indication" },
{ 0x17, "LE LL Physical Layers Request" },
{ 0x18, "LE LL Physical Layers Response" },
{ 0x19, "LE LL Minimum Number of Used Channels Indication" },
{ 0xff, "LE LL Broadcom Vendor Specific" },
{ 0, NULL }
};
static const value_string lm_le_opcodes_ext[] = {
{ 0x1, "LE LL Vendor Specific Feature Request" },
{ 0x2, "LE LL Vendor Specific Feature Response" },
{ 0x3, "LE LL Vendor Specific Enable Bcs Timeline" },
{ 0x4, "LE LL Random Address Change" },
{ 0, NULL }
};
static const true_false_string lm_toggle = {
"enabled",
"disabled"
};
/* one byte payload header */
int
dissect_payload_header1(proto_tree *tree, tvbuff_t *tvb, int offset)
{
proto_item *hdr_item;
proto_tree *hdr_tree;
/* DM1 is only transmitted within full diagnostic reports */
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
hdr_item = proto_tree_add_item(tree, hf_h4bcm_pldhdr, tvb, offset, 1, ENC_NA);
hdr_tree = proto_item_add_subtree(hdr_item, ett_h4bcm_pldhdr);
proto_tree_add_item(hdr_tree, hf_h4bcm_llid, tvb, offset, 1, ENC_NA);
proto_tree_add_item(hdr_tree, hf_h4bcm_pldflow, tvb, offset, 1, ENC_NA);
proto_tree_add_item(hdr_tree, hf_h4bcm_length, tvb, offset, 1, ENC_NA);
/* payload length */
return tvb_get_guint8(tvb, offset) >> 3;
}
/* Dissect common LM and LE LM header */
void
dissect_lm_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int is_sent)
{
guint32 mac;
gchar *mac_string = (gchar *)g_malloc(12);
/* LMP and LCP are only transmitted within full diagnostic reports */
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
/* clock of the BT master */
proto_tree_add_item(tree, hf_h4bcm_clock, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* decode and display MAC address in src/dst fields */
mac = tvb_get_guint32(tvb, offset, ENC_BIG_ENDIAN);
g_snprintf(mac_string, 12,
"%02x:%02x:%02x:%02x",
(mac & 0xff000000) >>24,
(mac & 0x00ff0000) >>16,
(mac & 0x0000ff00) >> 8,
(mac & 0x000000ff));
proto_tree_add_item(tree, hf_h4bcm_maclow, tvb, offset, 4, ENC_LITTLE_ENDIAN);
if (is_sent == 1) {
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "controller");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, mac_string);
} else {
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, mac_string);
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "controller");
}
}
/* Pass LMP handling to existing dissector if available */
void
dissect_lmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
int len;
int opcode;
int dm1_hdr;
tvbuff_t *pld_tvb;
/* LMP is only transmitted within full diagnostic reports */
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
/* DM1 header is common in both directions */
dm1_hdr = tvb_get_guint8(tvb, offset);
len = dissect_payload_header1(tree, tvb, offset);
/* Longest LMP packet is 17 bytes */
DISSECTOR_ASSERT(len <= 17);
offset += 1;
/* In receive direction, diagnostic LMP always sends a packet length 17,
* which makes failed assertions inside the LMP decoder...
* The fixed length corresponds to a DM1 header of 0x8f in flow direction
* receive, so we can check this directly instead of maybe re-checking
* valid length 17 in sent direction.
* This fix is really ugly, but it makes the LMP decoders assertions pass.
*/
if (dm1_hdr == 0x8f) {
/* Get normal / extended opcode length. Will be 0 if undefined. */
len = 0;
opcode = tvb_get_guint8(tvb, offset) >> 1;
if (opcode <= 65) {
len = lmp_lengths[opcode];
} else if (opcode == 127) {
opcode = tvb_get_guint8(tvb, offset + 1);
if (opcode <= 32) {
len = lmp_lengths_ext[opcode];
}
}
}
/* Check that we have a LMP dissector or else just display raw payload */
if (btlmp_handle && len != 0) {
pld_tvb = tvb_new_subset_length_caplen(tvb, offset, len, len);
call_dissector(btlmp_handle, pld_tvb, pinfo, tree);
} else {
/* Maximum (constant) LMP length is 17 */
proto_tree_add_item(tree, hf_h4bcm_payload, tvb, offset, 17, ENC_LITTLE_ENDIAN);
}
}
/* TODO placeholder for responses we don't know yet */
void
dissect_unkn_resp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
proto_tree_add_item(tree, hf_h4bcm_type, tvb, offset-1, 1, ENC_NA);
/* Sent from chip to host */
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "controller");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "host");
}
/* TODO placeholder for commands with arguments that are none or unknown */
void
dissect_unkn_get(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
DISSECTOR_ASSERT(tvb_reported_length(tvb) >= 1);
proto_tree_add_item(tree, hf_h4bcm_type, tvb, offset-1, 1, ENC_NA);
/* Sent from host to chip */
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "host");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "controller");
}
/* ACL BR stats */
void
dissect_acl_br_stats(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
proto_item *stats_item;
proto_tree *stats_tree;
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
/* Sent from chip to host */
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "controller");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "host");
/* Display previous item as tree header */
stats_item = proto_tree_add_item(tree, hf_h4bcm_type, tvb, offset-1, 1, ENC_NA);
/* Make stats subtree */
stats_tree = proto_item_add_subtree(stats_item, ett_h4bcm_acl_br_stats);
proto_tree_add_item(stats_tree, hf_h4bcm_stats_null_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_poll_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm1_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dh1_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dv_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_aux1_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm3_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dh3_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm5_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dh5_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_null_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_poll_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm1_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dh1_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dv_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_aux1_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm3_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dh3_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm5_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dh5_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
/* FIXME within the next 16 bytes, some are 4 bytes long ... not 100% sure which */
proto_tree_add_item(stats_tree, hf_h4bcm_stats_acl_rx, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_acl_tx, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_hec_err, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_crc_err, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_seqn_rep, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_soft_rst, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_test_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_test_rx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_test_err, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
}
/* ACL EDR stats */
void
dissect_acl_edr_stats(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
proto_item *stats_item;
proto_tree *stats_tree;
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
/* Sent from chip to host */
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "controller");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "host");
/* Display previous item as tree header */
stats_item = proto_tree_add_item(tree, hf_h4bcm_type, tvb, offset-1, 1, ENC_NA);
/* Make stats subtree */
stats_tree = proto_item_add_subtree(stats_item, ett_h4bcm_acl_edr_stats);
proto_tree_add_item(stats_tree, hf_h4bcm_stats_null_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_poll_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm1_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_2dh1_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_3dh1_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_2dh3_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_3dh3_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_2dh5_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_3dh5_rcvd, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
offset += 2; /* with this offset, null packets match */
proto_tree_add_item(stats_tree, hf_h4bcm_stats_null_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_poll_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_dm1_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_2dh1_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_3dh1_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_2dh3_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_3dh3_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_2dh5_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_3dh5_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
offset += 2; /* with this offset, acl bytes are correct */
proto_tree_add_item(stats_tree, hf_h4bcm_stats_acl_rx, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_acl_tx, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_hec_err, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_crc_err, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_seqn_rep, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_soft_rst, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_test_tx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_test_rx, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(stats_tree, hf_h4bcm_stats_test_err, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
}
/* LL_VERSION_IND p. 2594
*/
void
dissect_ll_version_ind(proto_tree *tree, tvbuff_t *tvb, int offset)
{
proto_tree_add_item(tree, hf_h4bcm_ll_version_ind_versnr, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_h4bcm_ll_version_ind_compid, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_h4bcm_ll_version_ind_subversnr, tvb, offset, 2, ENC_LITTLE_ENDIAN);
}
/* LM LE
* Most of this is already implemented in "btle" in Wireshark...
* But somewhat different format :( So we do it here.
*/
void
dissect_lm_le(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int is_sent)
{
int opcode;
int opcode_ext;
guint64 mac;
gchar *mac_string = (gchar *)g_malloc(18);
/* LMP and LCP are only transmitted within full diagnostic reports */
DISSECTOR_ASSERT(tvb_reported_length(tvb) == 63);
/* clock of the BT master */
proto_tree_add_item(tree, hf_h4bcm_clock, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* standard MAC address this time */
mac = tvb_get_guint64(tvb, offset-2, ENC_BIG_ENDIAN);
g_snprintf(mac_string, 18,
"%02x:%02x:%02x:%02x:%02x:%02x",
(mac & 0xff0000000000) >>40,
(mac & 0x00ff00000000) >>32,
(mac & 0x0000ff000000) >>24,
(mac & 0x000000ff0000) >>16,
(mac & 0x00000000ff00) >> 8,
(mac & 0x0000000000ff));
proto_tree_add_item(tree, hf_h4bcm_le_ether, tvb, offset, 6, ENC_LITTLE_ENDIAN);
offset += 6;
if (is_sent == 1) {
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "controller");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, mac_string);
} else {
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, mac_string);
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "controller");
}
/* Handle (only 1 byte, even though it can be 2 bytes long?!) */
proto_tree_add_item(tree, hf_h4bcm_le_handle, tvb, offset, 1, ENC_NA);
offset += 1;
opcode = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_h4bcm_le_opcode, tvb, offset, 1, ENC_NA);
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(opcode,
lm_le_opcodes, "LE LL Unknown Opcode (%d)"));
offset += 1;
switch (opcode) {
case 0x0c:
dissect_ll_version_ind(tree, tvb, offset);
break;
/* Broadcom vendor specific stuff... */
case 0xff:
opcode_ext = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_h4bcm_le_opcode_ext, tvb, offset, 1, ENC_NA);
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(opcode_ext,
lm_le_opcodes_ext, "LE LL Unknown VSC Opcode (%d)"));
offset += 1;
break;
default:
break;
}
}
/* Show if LM + LM LE logging was enabled or disabled */
void
dissect_lm_toggle(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
DISSECTOR_ASSERT(tvb_reported_length(tvb) >= 1);
/* Sent from host UART to chip */
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "host");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "controller");
/* OFF and ON */
proto_tree_add_item(tree, hf_h4bcm_lm_toggle, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
}
/* dissect a packet */
static int
dissect_h4bcm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *h4bcm_item, *type_item;
proto_tree *h4bcm_tree, *type_tree;
int offset;
int h4bcm_type;
/* sanity check: length */
if (tvb_reported_length(tvb) < 1)
/* bad length: look for a different dissector */
return 0;
/* fprintf(stderr, "total len %d\n", tvb_reported_length(tvb)); */
/* make entries in protocol column and info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI H4 Broadcom");
/* create display subtree for the protocol */
offset = 0;
h4bcm_item = proto_tree_add_item(tree, proto_h4bcm, tvb, offset, -1, ENC_NA);
h4bcm_tree = proto_item_add_subtree(h4bcm_item, ett_h4bcm);
h4bcm_type = tvb_get_guint8(tvb, offset);
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(h4bcm_type, h4bcm_types, "Unknown Type (%d)"));
offset += 1;
switch (h4bcm_type) {
case DIA_LM_SENT:
dissect_lm_header(tvb, pinfo, h4bcm_tree, offset, 1);
offset += 8;
dissect_lmp(tvb, pinfo, h4bcm_tree, offset);
break;
case DIA_LM_RECV:
dissect_lm_header(tvb, pinfo, h4bcm_tree, offset, 0);
offset += 11;
dissect_lmp(tvb, pinfo, h4bcm_tree, offset);
break;
case DIA_ACL_BR_RESP:
dissect_acl_br_stats(tvb, pinfo, h4bcm_tree, offset);
break;
case DIA_ACL_EDR_RESP:
dissect_acl_edr_stats(tvb, pinfo, h4bcm_tree, offset);
break;
case DIA_LE_SENT:
dissect_lm_le(tvb, pinfo, h4bcm_tree, offset, 1);
break;
case DIA_LE_RECV:
dissect_lm_le(tvb, pinfo, h4bcm_tree, offset, 0);
break;
case DIA_LM_ENABLE:
dissect_lm_toggle(tvb, pinfo, h4bcm_tree, offset);
break;
case DIA_MEM_PEEK_RESP:
case DIA_MEM_DUMP_RESP:
case DIA_TEST_COMPL:
case DIA_MEM_POKE_RESP:
case DIA_CPU_LOAD_RESP:
case DIA_AUX_RESP:
case DIA_ACL_UNKN1_RESP:
case DIA_ACL_UNKN2_RESP:
dissect_unkn_resp(tvb, pinfo, h4bcm_tree, offset);
break;
case DIA_ACL_BR_RESET:
case DIA_ACL_BR_GET:
case DIA_ACL_EDR_GET:
case DIA_AUX_GET:
case DIA_ACL_UNKN1_GET:
case DIA_ACL_UNKN2_GET:
case DIA_CON_GET:
case DIA_MEM_PEEK_GET:
case DIA_MEM_POKE_GET:
case DIA_MEM_DUMP_GET:
case DIA_PKT_TEST:
dissect_unkn_get(tvb, pinfo, h4bcm_tree, offset);
break;
default:
break;
}
/* Return the amount of data this dissector was able to dissect */
return tvb_reported_length(tvb);
}
/* register the protocol with Wireshark */
void
proto_register_h4bcm(void)
{
/* list of fields */
static hf_register_info hf[] = {
{ &hf_h4bcm_type,
{ "Type", "h4bcm.type",
FT_UINT8, BASE_HEX, VALS(h4bcm_types), 0x0,
"Diagnostic Information Type", HFILL }
},
{ &hf_h4bcm_clock,
{ "Clock", "h4bcm.clock",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Bluetooth Master Clock", HFILL }
},
{ &hf_h4bcm_maclow,
{ "Remote MAC Address", "h4bcm.maclow",
FT_BYTES, SEP_COLON, NULL, 0x0,
"Lower MAC address part, sufficient for l2ping ff:ff:maclow", HFILL }
},
{ &hf_h4bcm_pldhdr,
{ "Payload Header", "h4bcm.pldhdr",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_llid,
{ "LLID", "h4bcm.llid",
FT_UINT8, BASE_HEX, VALS(llid_codes), 0x03,
"Logical Link ID", HFILL }
},
{ &hf_h4bcm_pldflow,
{ "Flow", "h4bcm.flow",
FT_BOOLEAN, 8, NULL, 0x04,
"Payload Flow indication", HFILL }
},
{ &hf_h4bcm_length,
{ "Length", "h4bcm.length",
FT_UINT8, BASE_DEC, NULL, 0xf8,
"Payload Length", HFILL }
},
{ &hf_h4bcm_payload,
{ "Payload", "h4bcm.payload",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_lm_toggle,
{ "LM and LM LE Logging", "h4bcm.logging",
FT_BOOLEAN, 8, TFS(&lm_toggle), 0x01,
NULL, HFILL }
},
{ &hf_h4bcm_stats_null_rcvd,
{ "Null Packets Received", "h4bcm.stats.null_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_poll_rcvd,
{ "Poll Packets Received", "h4bcm.stats.poll_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dm1_rcvd,
{ "DM1 Packets Received", "h4bcm.stats.dm1_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dh1_rcvd,
{ "DH1 Packets Received", "h4bcm.stats.dh1_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dv_rcvd,
{ "DV Packets Received", "h4bcm.stats.dv_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_aux1_rcvd,
{ "AUX1 Packets Received", "h4bcm.stats.aux1_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dm3_rcvd,
{ "DM3 Packets Received", "h4bcm.stats.dm3_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dh3_rcvd,
{ "DH3 Packets Received", "h4bcm.stats.dh3_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dm5_rcvd,
{ "DM5 Packets Received", "h4bcm.stats.dm5_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dh5_rcvd,
{ "DH5 Packets Received", "h4bcm.stats.dh5_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_null_tx,
{ "Null Packets Transmitted", "h4bcm.stats.null_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_poll_tx,
{ "Poll Packets Transmitted", "h4bcm.stats.poll_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dm1_tx,
{ "DM1 Packets Transmitted", "h4bcm.stats.dm1_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dh1_tx,
{ "DH1 Packets Transmitted", "h4bcm.stats.dh1_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dv_tx,
{ "DV Packets Transmitted", "h4bcm.stats.dv_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_aux1_tx,
{ "AUX1 Packets Transmitted", "h4bcm.stats.aux1_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dm3_tx,
{ "DM3 Packets Transmitted", "h4bcm.stats.dm3_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dh3_tx,
{ "DH3 Packets Transmitted", "h4bcm.stats.dh3_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dm5_tx,
{ "DM5 Packets Transmitted", "h4bcm.stats.dm5_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_dh5_tx,
{ "DH5 Packets Transmitted", "h4bcm.stats.dh5_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_acl_rx,
{ "Total Received ACL Bytes", "h4bcm.stats.acl_rx",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_acl_tx,
{ "Total Transmitted ACL Bytes", "h4bcm.stats.acl_tx",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_hec_err,
{ "HEC Errors", "h4bcm.stats.hec_err",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_crc_err,
{ "CRC Errors", "h4bcm.stats.crc_err",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_seqn_rep,
{ "Seqn Repeat", "h4bcm.stats.seqn_rep",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_soft_rst,
{ "Soft Reset", "h4bcm.stats.soft_rst",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_test_tx,
{ "TestMode Transmitted Packets", "h4bcm.stats.test_tx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_test_rx,
{ "TestMode Received Packets", "h4bcm.stats.test_rx",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_test_err,
{ "TestMode Packet Errors", "h4bcm.stats.test_err",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_2dh1_rcvd,
{ "2DH1 Packets Received", "h4bcm.stats.2dh1_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_3dh1_rcvd,
{ "3DH1 Packets Received", "h4bcm.stats.3dh1_rcvd",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_h4bcm_stats_2dh3_rcvd,