Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 593 insertions, 0 deletions

diff --git a/epan/dissectors/packet-btsmp.c b/epan/dissectors/packet-btsmp.c
new file mode 100644
index 00000000..cb205a14
--- /dev/null
+++ b/epan/dissectors/packet-btsmp.c
@@ -0,0 +1,593 @@
+/* packet-btsmp.c
+ * Routines for Bluetooth Security Manager Protocol dissection
+ *
+ * Copyright 2012, Allan M. Madsen <allan.m@madsen.dk>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include "packet-bluetooth.h"
+#include "packet-btl2cap.h"
+
+/* Initialize the protocol and registered fields */
+static int proto_btsmp = -1;
+
+static int hf_btsmp_opcode = -1;
+static int hf_btsmp_io_capabilities = -1;
+static int hf_btsmp_oob_data_flags = -1;
+static int hf_btsmp_reason = -1;
+static int hf_btsmp_cfm_value = -1;
+static int hf_btsmp_random = -1;
+static int hf_btsmp_long_term_key = -1;
+static int hf_btsmp_id_resolving_key = -1;
+static int hf_btsmp_signature_key = -1;
+static int hf_btsmp_bonding_flags = -1;
+static int hf_btsmp_mitm_flag = -1;
+static int hf_btsmp_secure_connection_flag = -1;
+static int hf_btsmp_keypress_flag = -1;
+static int hf_btsmp_ct2_flag = -1;
+static int hf_btsmp_reserved_flag = -1;
+static int hf_btsmp_max_enc_key_size = -1;
+static int hf_btsmp_key_dist_enc = -1;
+static int hf_btsmp_key_dist_id = -1;
+static int hf_btsmp_key_dist_sign = -1;
+static int hf_btsmp_key_dist_linkkey = -1;
+static int hf_btsmp_key_dist_reserved = -1;
+static int hf_btsmp_ediv = -1;
+static int hf_btsmp_authreq = -1;
+static int hf_btsmp_initiator_key_distribution = -1;
+static int hf_btsmp_responder_key_distribution = -1;
+static int hf_bd_addr = -1;
+static int hf_address_type = -1;
+static int hf_btsmp_public_key_x = -1;
+static int hf_btsmp_public_key_y = -1;
+static int hf_btsmp_dhkey_check = -1;
+static int hf_btsmp_notification_type = -1;
+
+static int * const hfx_btsmp_key_distribution[] = {
+    &hf_btsmp_key_dist_reserved,
+    &hf_btsmp_key_dist_linkkey,
+    &hf_btsmp_key_dist_sign,
+    &hf_btsmp_key_dist_id,
+    &hf_btsmp_key_dist_enc,
+    NULL
+};
+
+static int * const hfx_btsmp_authreq[] = {
+    &hf_btsmp_reserved_flag,
+    &hf_btsmp_ct2_flag,
+    &hf_btsmp_keypress_flag,
+    &hf_btsmp_secure_connection_flag,
+    &hf_btsmp_mitm_flag,
+    &hf_btsmp_bonding_flags,
+    NULL
+};
+
+
+/* Initialize the subtree pointers */
+static gint ett_btsmp = -1;
+static gint ett_btsmp_auth_req = -1;
+static gint ett_btsmp_key_dist = -1;
+
+static dissector_handle_t btsmp_handle;
+
+/* Opcodes */
+static const value_string opcode_vals[] = {
+    {0x01, "Pairing Request"},
+    {0x02, "Pairing Response"},
+    {0x03, "Pairing Confirm"},
+    {0x04, "Pairing Random"},
+    {0x05, "Pairing Failed"},
+    {0x06, "Encryption Information"},
+    {0x07, "Master Identification"},
+    {0x08, "Identity Information"},
+    {0x09, "Identity Address Information"},
+    {0x0A, "Signing Information"},
+    {0x0B, "Security Request"},
+    {0x0C, "Pairing Public Key"},
+    {0x0D, "Pairing DHKey Check"},
+    {0x0E, "Pairing Keypress Notification"},
+    {0x0, NULL}
+};
+
+/* IO capabilities */
+static const value_string io_capability_vals[] = {
+    {0x00, "Display Only"},
+    {0x01, "Display Yes/No"},
+    {0x02, "Keyboard Only"},
+    {0x03, "No Input, No Output"},
+    {0x04, "Keyboard, Display"},
+    {0x0, NULL}
+};
+
+/* OOB Data present Flag */
+static const value_string oob_data_flag_vals[] = {
+    {0x00, "OOB Auth. Data Not Present"},
+    {0x01, "OOB Auth. Data From Remote Device Present"},
+    {0x0, NULL}
+};
+
+/* Bonding flags */
+static const value_string bonding_flag_vals[] = {
+    {0x00, "No Bonding"},
+    {0x01, "Bonding"},
+    {0x0, NULL}
+};
+
+/* Reason codes */
+static const value_string reason_vals[] = {
+    {0x01, "Passkey Entry Failed"},
+    {0x02, "OOB Not Available"},
+    {0x03, "Authentication Requirements"},
+    {0x04, "Confirm Value Failed"},
+    {0x05, "Pairing Not Supported"},
+    {0x06, "Encryption Key Size"},
+    {0x07, "Command Not Supported"},
+    {0x08, "Unspecified Reason"},
+    {0x09, "Repeated Attempts"},
+    {0x0A, "Invalid Parameters"},
+    {0x0B, "DHKey Check Failed"},
+    {0x0C, "Numeric Comparison Failed"},
+    {0x0D, "BR/EDR pairing in progress"},
+    {0x0E, "Cross-transport Key Derivation/Generation not allowed"},
+    {0x0, NULL}
+};
+
+static const value_string notification_type_vals[] = {
+    {0x00, "Passkey Entry Started"},
+    {0x01, "Passkey Digit Entered"},
+    {0x02, "Passkey Digit Erased"},
+    {0x03, "Passkey Cleared"},
+    {0x04, "Passkey Entry Completed"},
+    {0x0, NULL}
+};
+
+/* X coordinate of debug public key. Little-endian. */
+static const guint8 debug_public_key_x[32] = {
+    0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
+    0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
+    0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
+    0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,
+};
+
+/* Y coordinate of debug public key. Little-endian. */
+static const guint8 debug_public_key_y[32] = {
+    0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
+    0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
+    0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
+    0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc
+};
+
+void proto_register_btsmp(void);
+void proto_reg_handoff_btsmp(void);
+
+static int
+dissect_btsmp_auth_req(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
+{
+    guint8 value;
+    const guint8 *ph;
+
+    col_append_str(pinfo->cinfo, COL_INFO, "AuthReq: ");
+    proto_tree_add_bitmask(tree, tvb, offset, hf_btsmp_authreq, ett_btsmp_auth_req, hfx_btsmp_authreq, ENC_LITTLE_ENDIAN);
+
+    value = tvb_get_guint8(tvb, offset);
+
+    ph = val_to_str_const(value & 0x03, bonding_flag_vals, "<unknown>");
+    col_append_sep_str(pinfo->cinfo, COL_INFO, "", ph);
+
+    if (value & 0x04)
+        col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", "MITM");
+    if (value & 0x08)
+        col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", "SecureConnection");
+    if (value & 0x10)
+        col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", "Keypress");
+    if (value & 0xE0)
+        col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", "Reserved");
+
+    return offset + 1;
+}
+
+static int
+dissect_btsmp_key_dist(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, gboolean initiator)
+{
+    guint8 value;
+    gboolean next = FALSE;
+
+    if (initiator) {
+        col_append_str(pinfo->cinfo, COL_INFO, " | Initiator Key(s): ");
+        proto_tree_add_bitmask(tree, tvb, offset, hf_btsmp_initiator_key_distribution, ett_btsmp_key_dist, hfx_btsmp_key_distribution, ENC_LITTLE_ENDIAN);
+    } else {
+        col_append_str(pinfo->cinfo, COL_INFO, " | Responder Key(s): ");
+        proto_tree_add_bitmask(tree, tvb, offset, hf_btsmp_responder_key_distribution, ett_btsmp_key_dist, hfx_btsmp_key_distribution, ENC_LITTLE_ENDIAN);
+    }
+
+    value = tvb_get_guint8(tvb, offset);
+
+    if (value & 0x01) {
+        col_append_str(pinfo->cinfo, COL_INFO, "LTK");
+        next = TRUE;
+    }
+    if (value & 0x02) {
+        col_append_sep_str(pinfo->cinfo, COL_INFO, next ? ", " : "", "IRK");
+        next = TRUE;
+    }
+    if (value & 0x04) {
+        col_append_sep_str(pinfo->cinfo, COL_INFO, next ? ", " : "", "CSRK");
+        next = TRUE;
+    }
+    if (value & 0x08) {
+        col_append_sep_str(pinfo->cinfo, COL_INFO, next ? ", " : "", "Linkkey");
+        next = TRUE;
+    }
+    if (value & 0xF0) {
+        col_append_sep_str(pinfo->cinfo, COL_INFO, next ? ", " : "", "Reserved");
+    }
+    if (!next) {
+        col_append_str(pinfo->cinfo, COL_INFO, "<none>");
+    }
+
+    return offset + 1;
+}
+
+static int
+dissect_btsmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
+{
+    int          offset = 0;
+    proto_item  *ti;
+    proto_tree  *st;
+    guint8      opcode;
+    guint32     interface_id;
+    guint32     adapter_id;
+    gint        previous_proto;
+
+    interface_id = HCI_INTERFACE_DEFAULT;
+    adapter_id = HCI_ADAPTER_DEFAULT;
+    previous_proto = (GPOINTER_TO_INT(wmem_list_frame_data(wmem_list_frame_prev(wmem_list_tail(pinfo->layers)))));
+    if (data && previous_proto == proto_btl2cap) {
+        btl2cap_data_t *l2cap_data;
+
+        l2cap_data = (btl2cap_data_t *) data;
+        if (l2cap_data) {
+            interface_id = l2cap_data->interface_id;
+            adapter_id = l2cap_data->adapter_id;
+        }
+    }
+
+    ti = proto_tree_add_item(tree, proto_btsmp, tvb, 0, tvb_captured_length(tvb), ENC_NA);
+    st = proto_item_add_subtree(ti, ett_btsmp);
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMP");
+
+    switch (pinfo->p2p_dir) {
+        case P2P_DIR_SENT:
+            col_set_str(pinfo->cinfo, COL_INFO, "Sent ");
+            break;
+        case P2P_DIR_RECV:
+            col_set_str(pinfo->cinfo, COL_INFO, "Rcvd ");
+            break;
+        default:
+            col_set_str(pinfo->cinfo, COL_INFO, "UnknownDirection ");
+            break;
+    }
+
+    if (tvb_reported_length(tvb) < 1)
+        return FALSE;
+
+    proto_tree_add_item(st, hf_btsmp_opcode, tvb, 0, 1, ENC_LITTLE_ENDIAN);
+    opcode = tvb_get_guint8(tvb, 0);
+    offset++;
+
+    col_append_str(pinfo->cinfo, COL_INFO, val_to_str_const(opcode, opcode_vals, "<unknown>"));
+
+    switch (opcode) {
+    case 0x01: /* Pairing Request */
+    case 0x02: /* Pairing Response */
+    {
+        col_append_str(pinfo->cinfo, COL_INFO, ": ");
+
+        proto_tree_add_item(st, hf_btsmp_io_capabilities, tvb, offset, 1, ENC_LITTLE_ENDIAN);
+        offset++;
+        proto_tree_add_item(st, hf_btsmp_oob_data_flags, tvb, offset, 1, ENC_LITTLE_ENDIAN);
+        offset++;
+
+        offset = dissect_btsmp_auth_req(tvb, offset, pinfo, st);
+
+        proto_tree_add_item(st, hf_btsmp_max_enc_key_size, tvb, offset, 1, ENC_LITTLE_ENDIAN);
+        offset++;
+
+        offset = dissect_btsmp_key_dist(tvb, offset, pinfo, st, TRUE);
+        offset = dissect_btsmp_key_dist(tvb, offset, pinfo, st, FALSE);
+        break;
+    }
+
+    case 0x03: /* Pairing Confirm */
+        proto_tree_add_item(st, hf_btsmp_cfm_value, tvb, offset, 16, ENC_NA);
+        offset += 16;
+        break;
+
+    case 0x04: /* Pairing Random */
+        proto_tree_add_item(st, hf_btsmp_random, tvb, offset, 16, ENC_NA);
+        offset += 16;
+        break;
+
+    case 0x05: /* Pairing Failed */
+        proto_tree_add_item(st, hf_btsmp_reason, tvb, offset, 1, ENC_LITTLE_ENDIAN);
+        col_append_fstr(pinfo->cinfo, COL_INFO, ": %s", val_to_str_const(tvb_get_guint8(tvb, offset), reason_vals, "<unknown>"));
+        offset++;
+        break;
+
+    case 0x06: /* Encryption Information */
+        proto_tree_add_item(st, hf_btsmp_long_term_key, tvb, offset, 16, ENC_NA);
+        offset += 16;
+        break;
+
+    case 0x07: /* Master Identification */
+        proto_tree_add_item(st, hf_btsmp_ediv, tvb, offset, 2, ENC_LITTLE_ENDIAN);
+        offset += 2;
+        proto_tree_add_item(st, hf_btsmp_random, tvb, offset, 8, ENC_NA);
+        offset += 8;
+        break;
+
+    case 0x08: /* Identity Information */
+        proto_tree_add_item(st, hf_btsmp_id_resolving_key, tvb, offset, 16, ENC_NA);
+        offset += 16;
+        break;
+
+    case 0x09: /* Identity Address Information */
+        proto_tree_add_item(st, hf_address_type, tvb, offset, 1, ENC_NA);
+        offset += 1;
+
+        offset = dissect_bd_addr(hf_bd_addr, pinfo, st, tvb, offset, FALSE, interface_id, adapter_id, NULL);
+        break;
+
+    case 0x0A: /* Signing Information */
+        proto_tree_add_item(st, hf_btsmp_signature_key, tvb, offset, 16, ENC_NA);
+        offset += 16;
+        break;
+
+     case 0x0B: /* Security Request */
+        col_append_str(pinfo->cinfo, COL_INFO, ": ");
+        offset = dissect_btsmp_auth_req(tvb, offset, pinfo, st);
+        break;
+
+    case 0x0C: /* Pairing Public Key */ {
+        proto_item  *sub_item;
+
+        sub_item = proto_tree_add_item(st, hf_btsmp_public_key_x, tvb, offset, 32, ENC_NA);
+        if (tvb_memeql(tvb, offset, debug_public_key_x, 32) == 0)
+            proto_item_append_text(sub_item, " (Debug Key)");
+        offset += 32;
+
+        sub_item = proto_tree_add_item(st, hf_btsmp_public_key_y, tvb, offset, 32, ENC_NA);
+        if (tvb_memeql(tvb, offset, debug_public_key_y, 32) == 0)
+            proto_item_append_text(sub_item, " (Debug Key)");
+        offset += 32;
+
+        break;}
+    case 0x0D: /* Pairing DHKey Check" */
+        proto_tree_add_item(st, hf_btsmp_dhkey_check, tvb, offset, 16, ENC_NA);
+        offset += 16;
+
+        break;
+    case 0x0E: /* Pairing Keypress Notification */
+        proto_tree_add_item(st, hf_btsmp_notification_type, tvb, offset, 1, ENC_NA);
+        col_append_fstr(pinfo->cinfo, COL_INFO, ": %s", val_to_str_const(tvb_get_guint8(tvb, offset), notification_type_vals, "<unknown>"));
+        offset += 1;
+
+        break;
+    default:
+        break;
+    }
+
+    return offset;
+}
+
+void
+proto_register_btsmp(void)
+{
+    static hf_register_info hf[] = {
+        {&hf_btsmp_opcode,
+            {"Opcode", "btsmp.opcode",
+            FT_UINT8, BASE_HEX, VALS(opcode_vals), 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_reason,
+            {"Reason", "btsmp.reason",
+            FT_UINT8, BASE_HEX, VALS(reason_vals), 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_io_capabilities,
+            {"IO Capability", "btsmp.io_capability",
+            FT_UINT8, BASE_HEX, VALS(io_capability_vals), 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_oob_data_flags,
+            {"OOB Data Flags", "btsmp.oob_data_flags",
+            FT_UINT8, BASE_HEX, VALS(oob_data_flag_vals), 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_cfm_value,
+            {"Confirm Value", "btsmp.cfm_value",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_random,
+            {"Random Value", "btsmp.random_value",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_long_term_key,
+            {"Long Term Key", "btsmp.long_term_key",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_id_resolving_key,
+            {"Identity Resolving Key", "btsmp.id_resolving_key",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_signature_key,
+            {"Signature Key", "btsmp.signature_key",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_bonding_flags,
+            {"Bonding Flags", "btsmp.bonding_flags",
+            FT_UINT8, BASE_HEX, VALS(bonding_flag_vals), 0x03,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_mitm_flag,
+            {"MITM Flag", "btsmp.mitm_flag",
+            FT_BOOLEAN, 8, NULL, 0x04,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_secure_connection_flag,
+            {"Secure Connection Flag", "btsmp.sc_flag",
+            FT_BOOLEAN, 8, NULL, 0x08,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_keypress_flag,
+            {"Keypress Flag", "btsmp.keypress_flag",
+            FT_BOOLEAN, 8, NULL, 0x10,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_ct2_flag,
+            {"CT2 Flag", "btsmp.ct2_flag",
+            FT_BOOLEAN, 8, NULL, 0x20,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_reserved_flag,
+            {"Reserved", "btsmp.reserved_flags",
+            FT_UINT8, BASE_HEX, NULL, 0xC0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_max_enc_key_size,
+            {"Max Encryption Key Size", "btsmp.max_enc_key_size",
+            FT_UINT8, BASE_DEC, NULL, 0x00,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_key_dist_enc,
+            {"Encryption Key (LTK)", "btsmp.key_dist_enc",
+            FT_BOOLEAN, 8, NULL, 0x01,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_key_dist_id,
+            {"Id Key (IRK)", "btsmp.key_dist_id",
+            FT_BOOLEAN, 8, NULL, 0x02,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_key_dist_sign,
+            {"Signature Key (CSRK)", "btsmp.key_dist_sign",
+            FT_BOOLEAN, 8, NULL, 0x04,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_key_dist_linkkey,
+            {"Link Key", "btsmp.key_dist_linkkey",
+            FT_BOOLEAN, 8, NULL, 0x08,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_key_dist_reserved,
+            {"Reserved", "btsmp.key_dist_reserved",
+            FT_UINT8, BASE_HEX, NULL, 0xF0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_ediv,
+            {"Encrypted Diversifier (EDIV)", "btsmp.ediv",
+            FT_UINT16, BASE_HEX, NULL, 0x00,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_authreq,
+            {"AuthReq", "btsmp.authreq",
+            FT_UINT8, BASE_HEX, NULL, 0x00,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_initiator_key_distribution,
+            {"Initiator Key Distribution", "btsmp.initiator_key_distribution",
+            FT_UINT8, BASE_HEX, NULL, 0x00,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_responder_key_distribution,
+            {"Responder Key Distribution", "btsmp.responder_key_distribution",
+            FT_UINT8, BASE_HEX, NULL, 0x00,
+            NULL, HFILL}
+        },
+        {&hf_bd_addr,
+          { "BD_ADDR", "btsmp.bd_addr",
+            FT_ETHER, BASE_NONE, NULL, 0x0,
+            "Bluetooth Device Address", HFILL}
+        },
+        { &hf_address_type,
+            { "Address Type", "btsmp.address_type",
+            FT_UINT8, BASE_HEX, VALS(bluetooth_address_type_vals), 0x0,
+            NULL, HFILL }
+        },
+        {&hf_btsmp_public_key_x,
+            {"Public Key X", "btsmp.public_key_x",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_public_key_y,
+            {"Public Key Y", "btsmp.public_key_y",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_dhkey_check,
+            {"DHKey Check", "btsmp.dhkey_check",
+            FT_BYTES, BASE_NONE, NULL, 0x0,
+            NULL, HFILL}
+        },
+        {&hf_btsmp_notification_type,
+            {"Notification Type", "btsmp.notification_type",
+            FT_UINT8, BASE_HEX, VALS(notification_type_vals), 0x0,
+            NULL, HFILL}
+        },
+    };
+
+    /* Setup protocol subtree array */
+    static gint *ett[] = {
+      &ett_btsmp,
+      &ett_btsmp_auth_req,
+      &ett_btsmp_key_dist
+    };
+
+    /* Register the protocol name and description */
+    proto_btsmp = proto_register_protocol("Bluetooth Security Manager Protocol",
+        "BT SMP", "btsmp");
+
+    btsmp_handle = register_dissector("btsmp", dissect_btsmp, proto_btsmp);
+
+    /* Required function calls to register the header fields and subtrees used */
+    proto_register_field_array(proto_btsmp, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_btsmp(void)
+{
+    dissector_add_uint("btl2cap.cid", BTL2CAP_FIXED_CID_SMP, btsmp_handle);
+    dissector_add_uint("btl2cap.cid", BTL2CAP_FIXED_CID_BR_EDR_SM, btsmp_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */