Initial support for decoding AVDTP signaling packets added to btmon.
e.g.
> ACL Data RX: Handle 70 flags 0x02 dlen 18
Channel: 64 len 14 [PSM 25 mode 0] {chan 0}
AVDTP: Command Get Config(0x04): transaction 11 nsp 0x00
50 03 04 04 01 00 07 06 00 00 11 15 02 fa
< ACL Data TX: Handle 70 flags 0x00 dlen 6
Channel: 64 len 2 [PSM 25 mode 0] {chan 0}
AVDTP: Response Set Config(0x03): transaction 5 nsp 0x00
52 03
---
Makefile.tools | 1 +
monitor/avdtp.c | 185 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
monitor/avdtp.h | 25 ++++++++
monitor/l2cap.c | 22 +++++++
monitor/l2cap.h | 2 +
5 files changed, 235 insertions(+)
create mode 100644 monitor/avdtp.c
create mode 100644 monitor/avdtp.h
diff --git a/Makefile.tools b/Makefile.tools
index 1d2dc94..e663b46 100644
--- a/Makefile.tools
+++ b/Makefile.tools
@@ -27,6 +27,7 @@ monitor_btmon_SOURCES = monitor/main.c monitor/bt.h \
monitor/l2cap.h monitor/l2cap.c \
monitor/sdp.h monitor/sdp.c \
monitor/avctp.h monitor/avctp.c \
+ monitor/avdtp.h monitor/avdtp.c \
monitor/rfcomm.h monitor/rfcomm.c \
monitor/uuid.h monitor/uuid.c \
monitor/hwdb.h monitor/hwdb.c \
diff --git a/monitor/avdtp.c b/monitor/avdtp.c
new file mode 100644
index 0000000..389dde0
--- /dev/null
+++ b/monitor/avdtp.c
@@ -0,0 +1,185 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2011 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 <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <inttypes.h>
+
+#include "lib/bluetooth.h"
+
+#include "src/shared/util.h"
+#include "bt.h"
+#include "packet.h"
+#include "display.h"
+#include "l2cap.h"
+#include "uuid.h"
+#include "keys.h"
+#include "sdp.h"
+#include "avdtp.h"
+
+/* AVDTP opcodes */
+#define AVDTP_DISCOVER_SEP 0x01
+#define AVDTP_GET_CAPABILITIES 0x02
+#define AVDTP_SET_CONFIG 0x03
+#define AVDTP_GET_CONFIG 0x04
+#define AVDTP_RECONFIG 0x05
+#define AVDTP_OPEN 0x06
+#define AVDTP_START 0x07
+#define AVDTP_CLOSE 0x08
+#define AVDTP_SUSPEND 0x09
+#define AVDTP_ABORT 0x0A
+#define AVDTP_SEC_CONTROL 0x0B
+#define AVDTP_GET_ALL_CAPABILITIES 0x0C
+#define AVDTP_DELAY_REPORT 0x0D
+
+struct avdtp_frame {
+ uint8_t hdr;
+ uint8_t nsp;
+ uint8_t tsid;
+ struct l2cap_frame l2cap_frame;
+};
+
+static const char *pt2str(uint8_t hdr)
+{
+ switch (hdr & 0x0c) {
+ case 0x00:
+ return "Single";
+ case 0x04:
+ return "Start";
+ case 0x08:
+ return "Cont";
+ case 0x0c:
+ return "End";
+ default:
+ return "Unknown";
+ }
+}
+
+static const char *mt2str(uint8_t hdr)
+{
+ switch (hdr & 0x03) {
+ case 0x00:
+ return "Command";
+ case 0x02:
+ return "Response";
+ case 0x03:
+ return "Reject";
+ default:
+ return "Unknown";
+ }
+}
+
+static const char *sig2str(uint8_t tsid)
+{
+ switch (tsid) {
+ case AVDTP_DISCOVER_SEP:
+ return "Discover";
+ case AVDTP_GET_CAPABILITIES:
+ return "Get Capabilities";
+ case AVDTP_SET_CONFIG:
+ return "Set Config";
+ case AVDTP_GET_CONFIG:
+ return "Get Config";
+ case AVDTP_RECONFIG:
+ return "Reconfig";
+ case AVDTP_OPEN:
+ return "Open";
+ case AVDTP_START:
+ return "Start";
+ case AVDTP_CLOSE:
+ return "Close";
+ case AVDTP_SUSPEND:
+ return "Suspend";
+ case AVDTP_ABORT:
+ return "Anort";
+ case AVDTP_SEC_CONTROL:
+ return "Security Control";
+ case AVDTP_GET_ALL_CAPABILITIES:
+ return "Get All Capabilities";
+ case AVDTP_DELAY_REPORT:
+ return "Delay report";
+ default:
+ return "Unknown Opcode";
+ }
+}
+
+void avdtp_packet(const struct l2cap_frame *frame)
+{
+ struct l2cap_frame *l2cap_frame;
+ struct avdtp_frame avdtp_frame;
+ const char *pdu_color;
+
+ l2cap_frame_pull(&avdtp_frame.l2cap_frame, frame, 0);
+
+ l2cap_frame = &avdtp_frame.l2cap_frame;
+ l2cap_frame->num = get_num(l2cap_frame);
+
+ avdtp_frame.tsid = 0x00;
+ avdtp_frame.nsp = 0x00;
+
+ switch (l2cap_frame->num) {
+ case 1:
+ if (!l2cap_frame_get_u8(l2cap_frame, &avdtp_frame.hdr) ||
+ !l2cap_frame_get_u8(l2cap_frame, &avdtp_frame.tsid)) {
+ print_text(COLOR_ERROR, "frame too short");
+ packet_hexdump(frame->data, frame->size);
+ return;
+ }
+
+ if ((avdtp_frame.hdr & 0x0c) == 0x04)
+ if (!l2cap_frame_get_u8(l2cap_frame,
+ &avdtp_frame.nsp)) {
+ packet_hexdump(frame->data, frame->size);
+ return;
+ }
+
+ l2cap_frame_get_u8(l2cap_frame, &avdtp_frame.tsid);
+
+ if (frame->in)
+ pdu_color = COLOR_MAGENTA;
+ else
+ pdu_color = COLOR_BLUE;
+
+ print_indent(8, pdu_color, "AVDTP: ",
+ mt2str(avdtp_frame.hdr), COLOR_OFF,
+ " %s(0x%02x): transaction %d nsp 0x%02x\n",
+ avdtp_frame.hdr & 0x08 ?
+ pt2str(avdtp_frame.hdr) :
+ sig2str(avdtp_frame.tsid), avdtp_frame.tsid,
+ avdtp_frame.hdr >> 4, avdtp_frame.nsp);
+
+ packet_hexdump(frame->data, frame->size);
+ break;
+
+ case 2:
+ /* Media Packets */
+ packet_hexdump(frame->data, frame->size);
+ break;
+ }
+}
diff --git a/monitor/avdtp.h b/monitor/avdtp.h
new file mode 100644
index 0000000..0173c21
--- /dev/null
+++ b/monitor/avdtp.h
@@ -0,0 +1,25 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2011-2014 Intel Corporation
+ * Copyright (C) 2002-2010 Marcel Holtmann <[email protected]>
+ *
+ *
+ * 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
+ *
+ */
+
+void avdtp_packet(const struct l2cap_frame *frame);
diff --git a/monitor/l2cap.c b/monitor/l2cap.c
index 5faa26f..3031e13 100644
--- a/monitor/l2cap.c
+++ b/monitor/l2cap.c
@@ -42,6 +42,7 @@
#include "keys.h"
#include "sdp.h"
#include "avctp.h"
+#include "avdtp.h"
#include "rfcomm.h"
/* L2CAP Control Field bit masks */
@@ -95,6 +96,7 @@ struct chan_data {
uint16_t scid;
uint16_t dcid;
uint16_t psm;
+ uint16_t num;
uint8_t ctrlid;
uint8_t mode;
uint8_t ext_ctrl;
@@ -102,10 +104,23 @@ struct chan_data {
static struct chan_data chan_list[MAX_CHAN];
+uint16_t get_num(struct l2cap_frame *frame)
+{
+ register int i;
+
+ for (i = 0; i < MAX_CHAN; i++)
+ if (chan_list[i].handle == frame->handle &&
+ chan_list[i].scid == frame->cid)
+ return chan_list[i].num;
+
+ return 0;
+}
+
static void assign_scid(const struct l2cap_frame *frame,
uint16_t scid, uint16_t psm, uint8_t ctrlid)
{
int i, n = -1;
+ int num = 1;
for (i = 0; i < MAX_CHAN; i++) {
if (n < 0 && chan_list[i].handle == 0x0000)
@@ -128,6 +143,8 @@ static void assign_scid(const struct l2cap_frame *frame,
break;
}
}
+ if (chan_list[i].psm == psm)
+ num++;
}
if (n < 0)
@@ -137,6 +154,7 @@ static void assign_scid(const struct l2cap_frame *frame,
chan_list[n].index = frame->index;
chan_list[n].handle = frame->handle;
chan_list[n].ident = frame->ident;
+ chan_list[n].num = num;
if (frame->in)
chan_list[n].dcid = scid;
@@ -1314,6 +1332,7 @@ static void l2cap_frame_init(struct l2cap_frame *frame, uint16_t index, bool in,
frame->psm = get_psm(frame);
frame->mode = get_mode(frame);
frame->chan = get_chan(frame);
+ frame->num = 0;
}
static void bredr_sig_packet(uint16_t index, bool in, uint16_t handle,
@@ -2958,6 +2977,9 @@ static void l2cap_frame(uint16_t index, bool in, uint16_t handle,
case 0x001B:
avctp_packet(&frame);
break;
+ case 0x019:
+ avdtp_packet(&frame);
+ break;
default:
packet_hexdump(data, size);
break;
diff --git a/monitor/l2cap.h b/monitor/l2cap.h
index 711bcb1..fac8625 100644
--- a/monitor/l2cap.h
+++ b/monitor/l2cap.h
@@ -33,11 +33,13 @@ struct l2cap_frame {
uint16_t cid;
uint16_t psm;
uint16_t chan;
+ uint16_t num;
uint8_t mode;
const void *data;
uint16_t size;
};
+uint16_t get_num(struct l2cap_frame *frame);
static inline void l2cap_frame_pull(struct l2cap_frame *frame,
const struct l2cap_frame *source, uint16_t len)
{
--
1.9.1
Hi Bharat,
On Tue, Mar 31, 2015 at 8:28 AM, Bharat Bhusan Panda
<[email protected]> wrote:
> ping
Looks like it would be a problem for multiple devices connected since
at assign_scid we don't have the information about the device just the
psm? Did you try that?
--
Luiz Augusto von Dentz
ping
> -----Original Message-----
> From: [email protected] [mailto:linux-bluetooth-
> [email protected]] On Behalf Of Bharat Panda
> Sent: Monday, March 30, 2015 10:46 AM
> To: [email protected]
> Cc: [email protected]; Bharat Panda
> Subject: [PATCH v4] monitor: Add AVDTP support to btmon
>
> Initial support for decoding AVDTP signaling packets added to btmon.
>
> e.g.
>
> > ACL Data RX: Handle 70 flags 0x02 dlen 18
> Channel: 64 len 14 [PSM 25 mode 0] {chan 0}
> AVDTP: Command Get Config(0x04): transaction 11 nsp 0x00
>
> 50 03 04 04 01 00 07 06 00 00 11 15 02 fa < ACL Data TX: Handle 70
flags
> 0x00 dlen 6
> Channel: 64 len 2 [PSM 25 mode 0] {chan 0}
> AVDTP: Response Set Config(0x03): transaction 5 nsp 0x00
>
> 52 03
> ---
> Makefile.tools | 1 +
> monitor/avdtp.c | 185
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> monitor/avdtp.h | 25 ++++++++
> monitor/l2cap.c | 22 +++++++
> monitor/l2cap.h | 2 +
> 5 files changed, 235 insertions(+)
> create mode 100644 monitor/avdtp.c
> create mode 100644 monitor/avdtp.h
>
> diff --git a/Makefile.tools b/Makefile.tools index 1d2dc94..e663b46 100644
> --- a/Makefile.tools
> +++ b/Makefile.tools
> @@ -27,6 +27,7 @@ monitor_btmon_SOURCES = monitor/main.c
> monitor/bt.h \
> monitor/l2cap.h monitor/l2cap.c \
> monitor/sdp.h monitor/sdp.c \
> monitor/avctp.h monitor/avctp.c \
> + monitor/avdtp.h monitor/avdtp.c \
> monitor/rfcomm.h monitor/rfcomm.c \
> monitor/uuid.h monitor/uuid.c \
> monitor/hwdb.h monitor/hwdb.c \
> diff --git a/monitor/avdtp.c b/monitor/avdtp.c new file mode 100644 index
> 0000000..389dde0
> --- /dev/null
> +++ b/monitor/avdtp.c
> @@ -0,0 +1,185 @@
> +/*
> + *
> + * BlueZ - Bluetooth protocol stack for Linux
> + *
> + * Copyright (C) 2004-2011 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 <stdlib.h>
> +#include <string.h>
> +#include <ctype.h>
> +#include <inttypes.h>
> +
> +#include "lib/bluetooth.h"
> +
> +#include "src/shared/util.h"
> +#include "bt.h"
> +#include "packet.h"
> +#include "display.h"
> +#include "l2cap.h"
> +#include "uuid.h"
> +#include "keys.h"
> +#include "sdp.h"
> +#include "avdtp.h"
> +
> +/* AVDTP opcodes */
> +#define AVDTP_DISCOVER_SEP 0x01
> +#define AVDTP_GET_CAPABILITIES 0x02
> +#define AVDTP_SET_CONFIG 0x03
> +#define AVDTP_GET_CONFIG 0x04
> +#define AVDTP_RECONFIG 0x05
> +#define AVDTP_OPEN 0x06
> +#define AVDTP_START 0x07
> +#define AVDTP_CLOSE 0x08
> +#define AVDTP_SUSPEND 0x09
> +#define AVDTP_ABORT 0x0A
> +#define AVDTP_SEC_CONTROL 0x0B
> +#define AVDTP_GET_ALL_CAPABILITIES 0x0C
> +#define AVDTP_DELAY_REPORT 0x0D
> +
> +struct avdtp_frame {
> + uint8_t hdr;
> + uint8_t nsp;
> + uint8_t tsid;
> + struct l2cap_frame l2cap_frame;
> +};
> +
> +static const char *pt2str(uint8_t hdr)
> +{
> + switch (hdr & 0x0c) {
> + case 0x00:
> + return "Single";
> + case 0x04:
> + return "Start";
> + case 0x08:
> + return "Cont";
> + case 0x0c:
> + return "End";
> + default:
> + return "Unknown";
> + }
> +}
> +
> +static const char *mt2str(uint8_t hdr)
> +{
> + switch (hdr & 0x03) {
> + case 0x00:
> + return "Command";
> + case 0x02:
> + return "Response";
> + case 0x03:
> + return "Reject";
> + default:
> + return "Unknown";
> + }
> +}
> +
> +static const char *sig2str(uint8_t tsid) {
> + switch (tsid) {
> + case AVDTP_DISCOVER_SEP:
> + return "Discover";
> + case AVDTP_GET_CAPABILITIES:
> + return "Get Capabilities";
> + case AVDTP_SET_CONFIG:
> + return "Set Config";
> + case AVDTP_GET_CONFIG:
> + return "Get Config";
> + case AVDTP_RECONFIG:
> + return "Reconfig";
> + case AVDTP_OPEN:
> + return "Open";
> + case AVDTP_START:
> + return "Start";
> + case AVDTP_CLOSE:
> + return "Close";
> + case AVDTP_SUSPEND:
> + return "Suspend";
> + case AVDTP_ABORT:
> + return "Anort";
> + case AVDTP_SEC_CONTROL:
> + return "Security Control";
> + case AVDTP_GET_ALL_CAPABILITIES:
> + return "Get All Capabilities";
> + case AVDTP_DELAY_REPORT:
> + return "Delay report";
> + default:
> + return "Unknown Opcode";
> + }
> +}
> +
> +void avdtp_packet(const struct l2cap_frame *frame) {
> + struct l2cap_frame *l2cap_frame;
> + struct avdtp_frame avdtp_frame;
> + const char *pdu_color;
> +
> + l2cap_frame_pull(&avdtp_frame.l2cap_frame, frame, 0);
> +
> + l2cap_frame = &avdtp_frame.l2cap_frame;
> + l2cap_frame->num = get_num(l2cap_frame);
> +
> + avdtp_frame.tsid = 0x00;
> + avdtp_frame.nsp = 0x00;
> +
> + switch (l2cap_frame->num) {
> + case 1:
> + if (!l2cap_frame_get_u8(l2cap_frame, &avdtp_frame.hdr) ||
> + !l2cap_frame_get_u8(l2cap_frame,
> &avdtp_frame.tsid)) {
> + print_text(COLOR_ERROR, "frame too short");
> + packet_hexdump(frame->data, frame->size);
> + return;
> + }
> +
> + if ((avdtp_frame.hdr & 0x0c) == 0x04)
> + if (!l2cap_frame_get_u8(l2cap_frame,
> + &avdtp_frame.nsp)) {
> + packet_hexdump(frame->data, frame-
> >size);
> + return;
> + }
> +
> + l2cap_frame_get_u8(l2cap_frame, &avdtp_frame.tsid);
> +
> + if (frame->in)
> + pdu_color = COLOR_MAGENTA;
> + else
> + pdu_color = COLOR_BLUE;
> +
> + print_indent(8, pdu_color, "AVDTP: ",
> + mt2str(avdtp_frame.hdr),
> COLOR_OFF,
> + " %s(0x%02x): transaction %d nsp
> 0x%02x\n",
> + avdtp_frame.hdr & 0x08 ?
> + pt2str(avdtp_frame.hdr) :
> + sig2str(avdtp_frame.tsid),
> avdtp_frame.tsid,
> + avdtp_frame.hdr >> 4,
> avdtp_frame.nsp);
> +
> + packet_hexdump(frame->data, frame->size);
> + break;
> +
> + case 2:
> + /* Media Packets */
> + packet_hexdump(frame->data, frame->size);
> + break;
> + }
> +}
> diff --git a/monitor/avdtp.h b/monitor/avdtp.h new file mode 100644 index
> 0000000..0173c21
> --- /dev/null
> +++ b/monitor/avdtp.h
> @@ -0,0 +1,25 @@
> +/*
> + *
> + * BlueZ - Bluetooth protocol stack for Linux
> + *
> + * Copyright (C) 2011-2014 Intel Corporation
> + * Copyright (C) 2002-2010 Marcel Holtmann <[email protected]>
> + *
> + *
> + * 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
> + *
> + */
> +
> +void avdtp_packet(const struct l2cap_frame *frame);
> diff --git a/monitor/l2cap.c b/monitor/l2cap.c index 5faa26f..3031e13
100644
> --- a/monitor/l2cap.c
> +++ b/monitor/l2cap.c
> @@ -42,6 +42,7 @@
> #include "keys.h"
> #include "sdp.h"
> #include "avctp.h"
> +#include "avdtp.h"
> #include "rfcomm.h"
>
> /* L2CAP Control Field bit masks */
> @@ -95,6 +96,7 @@ struct chan_data {
> uint16_t scid;
> uint16_t dcid;
> uint16_t psm;
> + uint16_t num;
> uint8_t ctrlid;
> uint8_t mode;
> uint8_t ext_ctrl;
> @@ -102,10 +104,23 @@ struct chan_data {
>
> static struct chan_data chan_list[MAX_CHAN];
>
> +uint16_t get_num(struct l2cap_frame *frame) {
> + register int i;
> +
> + for (i = 0; i < MAX_CHAN; i++)
> + if (chan_list[i].handle == frame->handle &&
> + chan_list[i].scid == frame->cid)
> + return chan_list[i].num;
> +
> + return 0;
> +}
> +
> static void assign_scid(const struct l2cap_frame *frame,
> uint16_t scid, uint16_t psm, uint8_t ctrlid)
{
> int i, n = -1;
> + int num = 1;
>
> for (i = 0; i < MAX_CHAN; i++) {
> if (n < 0 && chan_list[i].handle == 0x0000) @@ -128,6 +143,8
> @@ static void assign_scid(const struct l2cap_frame *frame,
> break;
> }
> }
> + if (chan_list[i].psm == psm)
> + num++;
> }
>
> if (n < 0)
> @@ -137,6 +154,7 @@ static void assign_scid(const struct l2cap_frame
> *frame,
> chan_list[n].index = frame->index;
> chan_list[n].handle = frame->handle;
> chan_list[n].ident = frame->ident;
> + chan_list[n].num = num;
>
> if (frame->in)
> chan_list[n].dcid = scid;
> @@ -1314,6 +1332,7 @@ static void l2cap_frame_init(struct l2cap_frame
> *frame, uint16_t index, bool in,
> frame->psm = get_psm(frame);
> frame->mode = get_mode(frame);
> frame->chan = get_chan(frame);
> + frame->num = 0;
> }
>
> static void bredr_sig_packet(uint16_t index, bool in, uint16_t handle, @@
-
> 2958,6 +2977,9 @@ static void l2cap_frame(uint16_t index, bool in,
uint16_t
> handle,
> case 0x001B:
> avctp_packet(&frame);
> break;
> + case 0x019:
> + avdtp_packet(&frame);
> + break;
> default:
> packet_hexdump(data, size);
> break;
> diff --git a/monitor/l2cap.h b/monitor/l2cap.h index 711bcb1..fac8625
100644
> --- a/monitor/l2cap.h
> +++ b/monitor/l2cap.h
> @@ -33,11 +33,13 @@ struct l2cap_frame {
> uint16_t cid;
> uint16_t psm;
> uint16_t chan;
> + uint16_t num;
> uint8_t mode;
> const void *data;
> uint16_t size;
> };
>
> +uint16_t get_num(struct l2cap_frame *frame);
> static inline void l2cap_frame_pull(struct l2cap_frame *frame,
> const struct l2cap_frame *source, uint16_t
> len) {
> --
> 1.9.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-bluetooth"
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> the body of a message to [email protected] More majordomo
> info at http://vger.kernel.org/majordomo-info.html
Hi Bharat,
On Wed, May 27, 2015 at 1:41 PM, Bharat Bhusan Panda
<[email protected]> wrote:
> Hi Luiz,
>
>> -----Original Message-----
>> From: Luiz Augusto von Dentz [mailto:[email protected]]
>> Sent: Tuesday, March 31, 2015 6:57 PM
>> To: Bharat Bhusan Panda
>> Cc: [email protected]; [email protected]
>> Subject: Re: [PATCH v4] monitor: Add AVDTP support to btmon
>>
>> Hi Bharat,
>>
>> On Tue, Mar 31, 2015 at 8:28 AM, Bharat Bhusan Panda
>> <[email protected]> wrote:
>> > ping
>>
>> Looks like it would be a problem for multiple devices connected since at
>> assign_scid we don't have the information about the device just the psm?
>> Did you try that?
> Did you mean, multiple devices connected to same AVDTP case?
Yep, if lets say a second device connects to AVDTP it would cause num
to be increased since it is the same psm and that would break the
parsing. If we want to track this properly we need to add the remote
device to l2cap_frame so we only increment num if the device matches.
--
Luiz Augusto von Dentz
Hi Luiz,
> -----Original Message-----
> From: Luiz Augusto von Dentz [mailto:[email protected]]
> Sent: Tuesday, March 31, 2015 6:57 PM
> To: Bharat Bhusan Panda
> Cc: [email protected]; [email protected]
> Subject: Re: [PATCH v4] monitor: Add AVDTP support to btmon
>
> Hi Bharat,
>
> On Tue, Mar 31, 2015 at 8:28 AM, Bharat Bhusan Panda
> <[email protected]> wrote:
> > ping
>
> Looks like it would be a problem for multiple devices connected since at
> assign_scid we don't have the information about the device just the psm?
> Did you try that?
Did you mean, multiple devices connected to same AVDTP case?
>
>
> --
> Luiz Augusto von Dentz