Add parsing of A2MP signalling.
Example output:
2011-10-18 16:09:44.493202 > ACL data: handle 39 flags 0x02 dlen 16
A2MP: Discover req: mtu/mps 670 mask: 0x0000
2011-10-18 16:09:44.493404 < ACL data: handle 39 flags 0x00 dlen 22
A2MP: Discover rsp: mtu/mps 670 mask: 0x0000
Controller list:
id 0, type 0, status 0x01 (Bluetooth only)
id 17, type 254, status 0x06 (Full capacity)
2011-10-18 16:09:44.697203 > ACL data: handle 39 flags 0x02 dlen 13
A2MP: Get Info req: id 17
2011-10-18 16:09:44.697312 < ACL data: handle 39 flags 0x00 dlen 30
A2MP: Get Info rsp: id 17 status (0) Success
total bandwidth 500000
max guaranteed bandwidth 0
min latency 100000
pal capabilities 0x0000
assoc size 8
2011-10-18 16:09:44.893203 > ACL data: handle 39 flags 0x02 dlen 13
A2MP: Get AMP Assoc req: id 17
2011-10-18 16:09:44.893618 < ACL data: handle 39 flags 0x00 dlen 22
A2MP: Get AMP Assoc rsp: id 17 status (0) Success
assoc data:
08 01 b1 01 0a 04 6c 42
2011-10-18 16:09:45.598201 > ACL data: handle 39 flags 0x02 dlen 22
A2MP: Create Physical Link req: local id 1 remote id 17
assoc data:
08 01 b1 01 0a 04 6d 38
2011-10-18 16:09:45.598643 < ACL data: handle 39 flags 0x00 dlen 15
A2MP: Create Physical Link rsp: local id 17 remote id 1 status 0
Success
---
lib/amp.h | 133 +++++++++++++++++++
parser/l2cap.c | 385 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
parser/parser.h | 1 +
src/hcidump.c | 1 +
4 files changed, 520 insertions(+), 0 deletions(-)
create mode 100644 lib/amp.h
diff --git a/lib/amp.h b/lib/amp.h
new file mode 100644
index 0000000..0c6300a
--- /dev/null
+++ b/lib/amp.h
@@ -0,0 +1,133 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2010-2011 Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __AMP_H
+#define __AMP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define AMP_MGR_CID 0x03
+
+/* AMP manager codes */
+#define AMP_COMMAND_REJ 0x01
+#define AMP_DISCOVER_REQ 0x02
+#define AMP_DISCOVER_RSP 0x03
+#define AMP_CHANGE_NOTIFY 0x04
+#define AMP_CHANGE_RSP 0x05
+#define AMP_INFO_REQ 0x06
+#define AMP_INFO_RSP 0x07
+#define AMP_ASSOC_REQ 0x08
+#define AMP_ASSOC_RSP 0x09
+#define AMP_LINK_REQ 0x0a
+#define AMP_LINK_RSP 0x0b
+#define AMP_DISCONN_REQ 0x0c
+#define AMP_DISCONN_RSP 0x0d
+
+typedef struct {
+ uint8_t code;
+ uint8_t ident;
+ uint16_t len;
+} __attribute__ ((packed)) amp_mgr_hdr;
+#define AMP_MGR_HDR_SIZE 4
+
+/* AMP ASSOC structure */
+typedef struct {
+ uint8_t type_id;
+ uint16_t len;
+ uint8_t data[0];
+} __attribute__ ((packed)) amp_assoc_tlv;
+
+typedef struct {
+ uint16_t reason;
+} __attribute__ ((packed)) amp_cmd_rej_parms;
+
+typedef struct {
+ uint16_t mtu;
+ uint16_t mask;
+} __attribute__ ((packed)) amp_discover_req_parms;
+
+typedef struct {
+ uint16_t mtu;
+ uint16_t mask;
+ uint8_t controller_list[0];
+} __attribute__ ((packed)) amp_discover_rsp_parms;
+
+typedef struct {
+ uint8_t id;
+} __attribute__ ((packed)) amp_info_req_parms;
+
+typedef struct {
+ uint8_t id;
+ uint8_t status;
+ uint32_t total_bandwidth;
+ uint32_t max_bandwidth;
+ uint32_t min_latency;
+ uint16_t pal_caps;
+ uint16_t assoc_size;
+} __attribute__ ((packed)) amp_info_rsp_parms;
+
+typedef struct {
+ uint8_t id;
+ uint8_t status;
+ amp_assoc_tlv assoc;
+} __attribute__ ((packed)) amp_assoc_rsp_parms;
+
+typedef struct {
+ uint8_t local_id;
+ uint8_t remote_id;
+ amp_assoc_tlv assoc;
+} __attribute__ ((packed)) amp_link_req_parms;
+
+typedef struct {
+ uint8_t local_id;
+ uint8_t remote_id;
+ uint8_t status;
+} __attribute__ ((packed)) amp_link_rsp_parms;
+
+typedef struct {
+ uint8_t local_id;
+ uint8_t remote_id;
+} __attribute__ ((packed)) amp_disconn_req_parms;
+
+#define AMP_COMMAND_NOT_RECOGNIZED 0x0000
+
+/* AMP controller status */
+#define AMP_CT_POWERED_DOWN 0x00
+#define AMP_CT_BLUETOOTH_ONLY 0x01
+#define AMP_CT_NO_CAPACITY 0x02
+#define AMP_CT_LOW_CAPACITY 0x03
+#define AMP_CT_MEDIUM_CAPACITY 0x04
+#define AMP_CT_HIGH_CAPACITY 0x05
+#define AMP_CT_FULL_CAPACITY 0x06
+
+/* AMP response status */
+#define AMP_STATUS_SUCCESS 0x00
+#define AMP_STATUS_INVALID_CTRL_ID 0x01
+#define AMP_STATUS_UNABLE_START_LINK_CREATION 0x02
+#define AMP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02
+#define AMP_STATUS_COLLISION_OCCURED 0x03
+#define AMP_STATUS_DISCONN_REQ_RECVD 0x04
+#define AMP_STATUS_PHYS_LINK_EXISTS 0x05
+#define AMP_STATUS_SECURITY_VIOLATION 0x06
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __AMP_H */
diff --git a/parser/l2cap.c b/parser/l2cap.c
index 7547e8b..7915788 100644
--- a/parser/l2cap.c
+++ b/parser/l2cap.c
@@ -36,6 +36,7 @@
#include "parser/sdp.h"
#include "lib/hci.h"
#include "lib/l2cap.h"
+#include "lib/amp.h"
typedef struct {
uint16_t handle;
@@ -259,6 +260,16 @@ static char *reason2str(uint16_t reason)
}
}
+static char *ampreason2str(uint16_t reason)
+{
+ switch (reason) {
+ case AMP_COMMAND_NOT_RECOGNIZED:
+ return "Command not recognized";
+ default:
+ return "Reserved";
+ }
+}
+
static char *connresult2str(uint16_t result)
{
switch (result) {
@@ -399,6 +410,76 @@ static char *supervisory2str(uint8_t supervisory)
}
}
+static char *ampctstatus2str(uint8_t status)
+{
+ switch (status) {
+ case AMP_CT_POWERED_DOWN:
+ return "Powered down";
+ case AMP_CT_BLUETOOTH_ONLY:
+ return "Bluetooth only";
+ case AMP_CT_NO_CAPACITY:
+ return "No capacity";
+ case AMP_CT_LOW_CAPACITY:
+ return "Low capacity";
+ case AMP_CT_MEDIUM_CAPACITY:
+ return "Medium capacity";
+ case AMP_CT_HIGH_CAPACITY:
+ return "High capacity";
+ case AMP_CT_FULL_CAPACITY:
+ return "Full capacity";
+ default:
+ return "Reserved";
+
+ }
+}
+
+static char *ampstatus2str(uint8_t status)
+{
+ switch (status) {
+ case AMP_STATUS_SUCCESS:
+ return "Success";
+ case AMP_STATUS_INVALID_CTRL_ID:
+ return "Invalid Controller ID";
+ default:
+ return "Reserved";
+ }
+}
+
+static char *ampcplstatus2str(uint8_t status)
+{
+ switch (status) {
+ case AMP_STATUS_SUCCESS:
+ return "Success";
+ case AMP_STATUS_INVALID_CTRL_ID:
+ return "Invalid Controller ID";
+ case AMP_STATUS_UNABLE_START_LINK_CREATION:
+ return "Failed - Unable to start link creation";
+ case AMP_STATUS_COLLISION_OCCURED:
+ return "Failed - Collision occured";
+ case AMP_STATUS_DISCONN_REQ_RECVD:
+ return "Failed - Disconnect physical link received";
+ case AMP_STATUS_PHYS_LINK_EXISTS:
+ return "Failed - Physical link already exists";
+ case AMP_STATUS_SECURITY_VIOLATION:
+ return "Failed - Security violation";
+ default:
+ return "Reserved";
+ }
+}
+
+static char *ampdplstatus2str(uint8_t status)
+{
+ switch (status) {
+ case AMP_STATUS_SUCCESS:
+ return "Success";
+ case AMP_STATUS_INVALID_CTRL_ID:
+ return "Invalid Controller ID";
+ case AMP_STATUS_NO_PHYSICAL_LINK_EXISTS:
+ return "Failed - No Physical Link exists";
+ default:
+ return "Reserved";
+ }
+}
static inline void command_rej(int level, struct frame *frm)
{
@@ -923,6 +1004,240 @@ static inline void move_cfm_rsp(int level, l2cap_cmd_hdr *cmd, struct frame *frm
printf("Move cfm rsp: icid 0x%4.4x\n", icid);
}
+static inline void amp_command_rej(int level, struct frame *frm)
+{
+ amp_cmd_rej_parms *h = frm->ptr;
+ uint16_t reason = btohs(h->reason);
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Command Reject: reason (%d)- ", reason);
+ p_indent(level + 1, frm);
+ printf("%s\n", ampreason2str(reason));
+}
+
+static inline void amp_discover_req(int level, struct frame *frm, uint16_t len)
+{
+ amp_discover_req_parms *h = frm->ptr;
+ uint16_t mtu = btohs(h->mtu);
+ uint8_t *octet = (uint8_t *)&(h->mask);
+ uint16_t mask;
+ uint8_t extension;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Discover req: mtu/mps %d ", mtu);
+ len -= 2;
+
+ printf("mask:");
+
+ do {
+ len -= 2;
+ mask = btohs(*(uint16_t *)(&octet[0]));
+ printf(" 0x%4.4x", mask);
+
+ extension = octet[1] & 0x80;
+ octet += 2;
+ } while ((extension != 0) && (len >= 2));
+
+ printf("\n");
+}
+
+static inline void controller_list_dump (int level, uint8_t *octet, uint16_t len)
+{
+ if (p_filter(FILT_A2MP))
+ return;
+
+ p_indent(level, 0);
+ printf("Controller list:\n");
+
+ while (len >= 3) {
+ p_indent(level + 1, 0);
+ printf("id %d, type %d, status 0x%2.2x (%s)\n",
+ octet[0], octet[1], octet[2], ampctstatus2str(octet[2]));
+ octet += 3;
+ len -= 3;
+ }
+
+}
+
+static inline void amp_discover_rsp(int level, struct frame *frm, uint16_t len)
+{
+ amp_discover_rsp_parms *h = frm->ptr;
+ uint16_t mtu = btohs(h->mtu);
+ uint8_t *octet = (uint8_t *)&(h->mask);
+ uint16_t mask;
+ uint8_t extension;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Discover rsp: mtu/mps %d ", mtu);
+ len -= 2;
+
+ printf("mask:");
+
+ do {
+ len -= 2;
+ mask = btohs(*(uint16_t *)(&octet[0]));
+ printf(" 0x%4.4x", mask);
+
+ extension = octet[1] & 0x80;
+ octet += 2;
+ } while ((extension != 0) && (len >= 2));
+
+ printf("\n");
+
+ if (len >= 3) {
+ controller_list_dump (level + 1, octet, len);
+ }
+}
+
+static inline void amp_change_notify(int level, struct frame *frm, uint16_t len)
+{
+ uint8_t *octet = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Change Notify\n");
+
+ if (len >= 3) {
+ controller_list_dump (level + 1, octet, len);
+ }
+}
+
+static inline void amp_change_rsp(int level, struct frame *frm)
+{
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Change Response\n");
+}
+
+static inline void amp_info_req(int level, struct frame *frm)
+{
+ amp_info_req_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Get Info req: id %d\n", h->id);
+}
+
+static inline void amp_info_rsp(int level, struct frame *frm)
+{
+ amp_info_rsp_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Get Info rsp: id %d status (%d) %s\n",
+ h->id, h->status, ampstatus2str(h->status));
+
+ p_indent(level + 1, frm);
+ printf("total bandwidth %d\n", btohl(h->total_bandwidth));
+ p_indent(level + 1, frm);
+ printf("max guaranteed bandwidth %d\n", btohl(h->max_bandwidth));
+ p_indent(level + 1, frm);
+ printf("min latency %d\n", btohl(h->min_latency));
+ p_indent(level + 1, frm);
+ printf("pal capabilities 0x%4.4x\n", btohs(h->pal_caps));
+ p_indent(level + 1, frm);
+ printf("assoc size %d\n", btohs(h->assoc_size));
+}
+
+static inline void amp_assoc_req(int level, struct frame *frm)
+{
+ amp_info_req_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Get AMP Assoc req: id %d\n", h->id);
+}
+
+static inline void amp_assoc_dump(int level, uint8_t *assoc, uint16_t len)
+{
+ int i;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ p_indent(level, 0);
+ printf("assoc data:");
+ for (i = 0; i < len; i++) {
+ if (!(i%16)) printf("\n");
+ if (!(i%16)) p_indent(level+1, 0);
+ printf("%2.2x ",*assoc++);
+ }
+ printf("\n");
+
+}
+
+static inline void amp_assoc_rsp(int level, struct frame *frm, uint16_t len)
+{
+ amp_assoc_rsp_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Get AMP Assoc rsp: id %d status (%d) %s \n",
+ h->id, h->status, ampstatus2str(h->status));
+ amp_assoc_dump(level + 1, (uint8_t *) &h->assoc, len - 2);
+}
+
+static inline void amp_link_req(int level, struct frame *frm, uint16_t len)
+{
+ amp_link_req_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Create Physical Link req: local id %d remote id %d\n",
+ h->local_id, h->remote_id);
+ amp_assoc_dump(level + 1, (uint8_t *) &h->assoc, len - 2);
+}
+
+static inline void amp_link_rsp(int level, struct frame *frm)
+{
+ amp_link_rsp_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Create Physical Link rsp: local id %d remote id %d status %d\n",
+ h->local_id, h->remote_id, h->status);
+ p_indent(level+1, 0);
+ printf("%s\n", ampcplstatus2str(h->status));
+}
+
+static inline void amp_disconn_req(int level, struct frame *frm)
+{
+ amp_disconn_req_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Disconnect Physical Link req: local id %d remote id %d\n",
+ h->local_id, h->remote_id);
+}
+
+static inline void amp_disconn_rsp(int level, struct frame *frm)
+{
+ amp_link_rsp_parms *h = frm->ptr;
+
+ if (p_filter(FILT_A2MP))
+ return;
+
+ printf("Disconnect Physical Link rsp: local id %d remote id %d status %d\n",
+ h->local_id, h->remote_id, h->status);
+ p_indent(level+1, 0);
+ printf("%s\n", ampdplstatus2str(h->status));
+}
+
static void l2cap_parse(int level, struct frame *frm)
{
l2cap_hdr *hdr = (void *)frm->ptr;
@@ -1043,6 +1358,76 @@ static void l2cap_parse(int level, struct frame *frm)
p_indent(level, frm);
printf("L2CAP(c): len %d psm %d\n", dlen, psm);
raw_dump(level, frm);
+ } else if ((cid == 0x3) && (frm->len > 4)) {
+
+ /* Adjust for extra ERTM control bytes */
+ frm->ptr += 2;
+ frm->len -= 2;
+
+ while (frm->len >= AMP_MGR_HDR_SIZE) {
+ amp_mgr_hdr *hdr = frm->ptr;
+
+ frm->ptr += AMP_MGR_HDR_SIZE;
+ frm->len -= AMP_MGR_HDR_SIZE;
+
+ if (!p_filter(FILT_A2MP)) {
+ p_indent(level, frm);
+ printf("A2MP: ");
+ }
+ switch (hdr->code) {
+ case AMP_COMMAND_REJ:
+ amp_command_rej(level, frm);
+ break;
+ case AMP_DISCOVER_REQ:
+ amp_discover_req(level, frm, hdr->len);
+ break;
+ case AMP_DISCOVER_RSP:
+ amp_discover_rsp(level, frm, hdr->len);
+ break;
+ case AMP_CHANGE_NOTIFY:
+ amp_change_notify(level, frm, hdr->len);
+ break;
+ case AMP_CHANGE_RSP:
+ amp_change_rsp(level, frm);
+ break;
+ case AMP_INFO_REQ:
+ amp_info_req(level, frm);
+ break;
+ case AMP_INFO_RSP:
+ amp_info_rsp(level, frm);
+ break;
+ case AMP_ASSOC_REQ:
+ amp_assoc_req(level, frm);
+ break;
+ case AMP_ASSOC_RSP:
+ amp_assoc_rsp(level, frm, hdr->len);
+ break;
+ case AMP_LINK_REQ:
+ amp_link_req(level, frm, hdr->len);
+ break;
+ case AMP_LINK_RSP:
+ amp_link_rsp(level, frm);
+ break;
+ case AMP_DISCONN_REQ:
+ amp_disconn_req(level, frm);
+ break;
+ case AMP_DISCONN_RSP:
+ amp_disconn_rsp(level, frm);
+ break;
+ default:
+ if (p_filter(FILT_A2MP))
+ break;
+ printf("code 0x%2.2x ident %d len %d\n",
+ hdr->code, hdr->ident, btohs(hdr->len));
+ raw_dump(level, frm);
+ }
+
+ if (frm->len > btohs(hdr->len)) {
+ frm->len -= btohs(hdr->len);
+ frm->ptr += btohs(hdr->len);
+ } else
+ frm->len = 0;
+ }
} else if (cid == 0x04) {
if (!p_filter(FILT_ATT))
att_dump(level, frm);
diff --git a/parser/parser.h b/parser/parser.h
index e975808..22d18c3 100644
--- a/parser/parser.h
+++ b/parser/parser.h
@@ -80,6 +80,7 @@ struct frame {
#define FILT_AVCTP 0x0800
#define FILT_ATT 0x1000
#define FILT_SMP 0x2000
+#define FILT_A2MP 0x4000
#define FILT_OBEX 0x00010000
#define FILT_CAPI 0x00020000
diff --git a/src/hcidump.c b/src/hcidump.c
index 0c13360..2513c7c 100644
--- a/src/hcidump.c
+++ b/src/hcidump.c
@@ -802,6 +802,7 @@ static struct {
{ "hci", FILT_HCI },
{ "sco", FILT_SCO },
{ "l2cap", FILT_L2CAP },
+ { "a2mp", FILT_A2MP },
{ "rfcomm", FILT_RFCOMM },
{ "sdp", FILT_SDP },
{ "bnep", FILT_BNEP },
--
1.7.7
--
Peter Krystad
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum
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