static int hf_itdm_pktrate = -1;
static int hf_itdm_cxnsize = -1;
+/* I-TDM control protocol fields */
+static int hf_itdm_ctl_transid = -1;
+static int hf_itdm_ctl_command = -1;
+static int hf_itdm_ctl_flowid = -1;
+static int hf_itdm_ctl_dm = -1;
+static int hf_itdm_ctl_emts = -1;
+static int hf_itdm_ctl_pktrate = -1;
+static int hf_itdm_ctl_ptid = -1;
+static int hf_itdm_ctl_cksum = -1;
+
+
/* Initialize the subtree pointers */
static gint ett_itdm = -1;
+static gint ett_itdm_ctl = -1;
/* ZZZZ some magic number.. */
static guint gbl_ItdmMPLSLabel = 0x99887;
+static guint gbl_ItdmCTLFlowNo = 0;
static dissector_handle_t data_handle;
+/* I-TDM 125usec mode commands for data flows */
#define ITDM_CMD_NEW_CHAN 1
#define ITDM_CMD_CLOSE_CHAN 2
#define ITDM_CMD_RELOC_CHAN 3
#define ITDM_CHLOC1_OFFSET 14
#define ITDM_CHLOC2_OFFSET 16
+/* I-TDM commands for I-TDM control flows */
+#define ITDM_CTL_TRANSID_OFFSET 10
+#define ITDM_CTL_CMD_OFFSET 14
+#define ITDM_CTL_FLOWID_OFFSET 15
+#define ITDM_CTL_ITDM_MODE_OFFSET 18
+#define ITDM_CTL_EMTS_OFFSET 20
+#define ITDM_CTL_PKTRATE_OFFSET 22
+#define ITDM_CTL_PAIRED_TRANSID_OFFSET 26
+#define ITDM_CTL_CRC_OFFSET 30
+
+#define ITDM_CTL_CMD_AFI_REQ 1
+
static const value_string sop_eop_vals[] = {
{ 0x0, "Middle of Packet" },
{ 0x1, "End of Packet" },
{ 0, NULL }
};
-#if 0
-static const value_string ack_vals[] = {
- { 0x0, "Normal Command" },
- { 0x1, "Acknowledging a command from remote node" },
- { 0, NULL }
-};
-#else
static const true_false_string ack_tfs = {
"Acknowledging a command from remote node",
"Normal Command"
};
-#endif
static const value_string chcmd_vals[] = {
{ 0x0, "Reserved" },
{ 0, NULL }
};
+static const value_string itdm_ctl_command_vals[] = {
+ { 0x0, "Not Used" },
+ { 0x1, "AFI_REQ: Alloc Flow ID Req" },
+ { 0x2, "AFI_RSP: Alloc Flow ID Rsp - Req Accepted." },
+ { 0x3, "DFI_REQ: Dealloc Flow ID Req" },
+ { 0x4, "DFI_RSP: Dealloc Flow ID Rsp - Req Accepted." },
+
+ { 0x10, "AFI_RSP: Reject: Data Mode Field value Not Supported." },
+ { 0x11, "AFI_RSP: Reject: Explicit Multi-timeslot value Not Supported." },
+ { 0x12, "AFI_RSP: Reject: Packet Rate value Not Supported." },
+ { 0x13, "AFI_RSP: Reject: Checksum Invalid." },
+ { 0x14, "AFI_RSP: Reject: No more flows available." },
+
+ { 0x20, "DFI_RSP: Reject: Data Mode Field value does not match Flow ID." },
+ { 0x21, "DFI_RSP: Reject: Explicit Multi-timeslots value does not match." },
+ { 0x22, "DFI_RSP: Reject: Packet Rate value does not match." },
+ { 0x23, "DFI_RSP: Reject: Checksum Invalid." },
+ { 0x24, "DFI_RSP: Reject: Flow ID invalid (out of range)." },
+ { 0x25, "DFI_RSP: Reject: Flow ID not currently allocated." },
+ { 0x26, "DFI_RSP: Reject: Other Flow ID in pair has active connections." },
+ { 0, NULL }
+};
+
+static const value_string itdm_ctl_data_mode_vals[] = {
+ { 0, "Not Used." },
+ { 1, "I-TDM 1ms Data Mode." },
+ { 2, "I-TDM 125usec Data Mode." },
+ { 3, "I-TDM Explicit Multi-timeslot Data Mode." },
+ { 4, "I-TDM CAS Signaling Data Mode." },
+ { 0, NULL }
+};
+
+static const value_string itdm_ctl_pktrate_vals[] = {
+ { 0x447A0000, "I-TDM 1ms Data Mode." },
+ { 0x45FA0000, "I-TDM 125usec/EMTS Data Mode." },
+ { 0x43A6AAAB, "I-TDM T1 CAS Mode." },
+ { 0x43FA0000, "I-TDM E1 CAS Mode." },
+ { 0, NULL }
+};
+
static void
dissect_itdm_125usec(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
offset += 2;
}
}
- };
+ }
+
+ next_tvb = tvb_new_subset(tvb, offset, -1 , -1);
+ call_dissector(data_handle, next_tvb, pinfo, tree);
+}
+
+static void
+dissect_itdm_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ tvbuff_t *next_tvb;
+ proto_item *itdm_ctl_item = NULL;
+ proto_tree *itdm_ctl_tree = NULL;
+ int offset;
+ guint32 flowid;
+ guint8 command;
+ guint32 trans_id;
+ guint32 paired_trans_id;
+ guint32 allocd_flowid;
+
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "ITDM-Control");
+
+ flowid = tvb_get_ntoh24(tvb, ITDM_FLOWID_OFFSET);
+ command = tvb_get_guint8(tvb, ITDM_CTL_CMD_OFFSET);
+ allocd_flowid = tvb_get_ntoh24(tvb, ITDM_CTL_FLOWID_OFFSET);
+ trans_id = tvb_get_ntohl(tvb, ITDM_CTL_TRANSID_OFFSET);
+ paired_trans_id = tvb_get_ntohl(tvb, ITDM_CTL_PAIRED_TRANSID_OFFSET);
+
+ if (check_col(pinfo->cinfo, COL_INFO))
+ {
+ col_add_fstr(pinfo->cinfo, COL_INFO,
+ "Flow %d Command %s ",
+ flowid, val_to_str(command, itdm_ctl_command_vals, "Reserved"));
+
+ if (command != ITDM_CTL_CMD_AFI_REQ )
+ {
+ col_append_fstr(pinfo->cinfo, COL_INFO,
+ " Alloc'd FlowID %d", allocd_flowid);
+ }
+
+ col_append_fstr(pinfo->cinfo, COL_INFO, " TransID 0x%x ", trans_id);
+
+ if (command != ITDM_CTL_CMD_AFI_REQ )
+ {
+ col_append_fstr(pinfo->cinfo, COL_INFO,
+ " Paired TransID 0x%x", paired_trans_id);
+ }
+ }
+
+ offset = 0;
+
+ if (tree)
+ {
+ itdm_ctl_item = proto_tree_add_item(tree, proto_itdm, tvb, 0, -1, FALSE);
+ itdm_ctl_tree = proto_item_add_subtree(itdm_ctl_item, ett_itdm_ctl);
+
+ /* These eventually should go into a SFP.0 dissector... */
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_timestamp, tvb, offset, 2, FALSE);
+ offset += 2;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_seqnum, tvb, offset, 1, FALSE);
+ offset += 1;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_sop_eop, tvb, offset, 1, FALSE);
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_last_pack, tvb, offset, 1, FALSE);
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_pktlen, tvb, offset, 2, FALSE);
+ offset += 2;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_chksum, tvb, offset, 2, FALSE);
+ offset += 2;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_uid, tvb, offset, 3, FALSE);
+ offset += 3;
+
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_transid, tvb, offset, 4, FALSE);
+ offset += 4;
+
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_command, tvb, offset, 1, FALSE);
+ offset += 1;
+ if (command != ITDM_CTL_CMD_AFI_REQ) {
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_flowid, tvb, offset, 3, FALSE);
+ }
+ offset += 3;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_dm, tvb, offset, 1, FALSE);
+ offset += 1;
+ /* rsvd.. */
+ offset += 1;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_emts, tvb, offset, 2, FALSE);
+ offset += 2;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_pktrate, tvb, offset, 4, FALSE);
+ offset += 4;
+ if (command != ITDM_CTL_CMD_AFI_REQ) {
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_ptid, tvb, offset, 4, FALSE);
+ }
+ offset += 4;
+ /* rsvd.. */
+ offset += 2;
+ proto_tree_add_item(itdm_ctl_tree, hf_itdm_ctl_cksum, tvb, offset, 2, FALSE);
+ offset += 2;
+ }
next_tvb = tvb_new_subset(tvb, offset, -1 , -1);
call_dissector(data_handle, next_tvb, pinfo, tree);
static void
dissect_itdm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
- /* ZZZ for now, always 125 usec mode */
+ guint32 flowid;
+
+ /* ZZZ for now, 125 usec mode and I-TDM control protocol
+ * need to add 1ms mode */
if (tvb_length(tvb) < 18)
return;
- dissect_itdm_125usec(tvb, pinfo, tree);
+ /* See if this packet is a data flow or the I-TDM control flow. */
+ flowid = tvb_get_ntoh24(tvb, ITDM_FLOWID_OFFSET);
+
+ /* gbl_ItdmCTLFlowNo is the configurable flow number where
+ * the control protocol resides... Usually 0.
+ */
+ if (flowid == gbl_ItdmCTLFlowNo)
+ dissect_itdm_control(tvb, pinfo, tree);
+ else
+ dissect_itdm_125usec(tvb, pinfo, tree);
}
void proto_reg_handoff_itdm(void);
{ &hf_itdm_pktrate,{ "IEEE 754 Packet Rate", "itdm.pktrate",
FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
{ &hf_itdm_cxnsize, { "Connection Size", "itdm.cxnsize",
- FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
+
+ { &hf_itdm_ctl_transid, { "Transaction ID", "itdm.ctl_transid",
+ FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_command, { "Control Command", "itdm.ctl_cmd",
+ FT_UINT8, BASE_DEC, VALS(itdm_ctl_command_vals), 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_flowid, { "Allocated Flow ID", "itdm.ctl_flowid",
+ FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_dm, { "I-TDM Data Mode", "itdm.ctl_dm",
+ FT_UINT8, BASE_DEC, VALS(itdm_ctl_data_mode_vals), 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_emts, { "I-TDM Explicit Multi-timeslot Size", "itdm.ctlemts",
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_pktrate, { "I-TDM Packet Rate", "itdm.ctl_pktrate",
+ FT_UINT32, BASE_HEX, VALS(itdm_ctl_pktrate_vals), 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_ptid, { "Paired Transaction ID", "itdm.ctl_ptid",
+ FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
+ { &hf_itdm_ctl_cksum, { "ITDM Control Message Checksum", "itdm.ctl_cksum",
+ FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }
};
static gint *ett[] = {
- &ett_itdm
+ &ett_itdm,
+ &ett_itdm_ctl
};
module_t *itdm_module;
proto_register_subtree_array(ett, array_length(ett));
itdm_module = prefs_register_protocol(proto_itdm, proto_reg_handoff_itdm);
+
prefs_register_uint_preference(itdm_module, "mpls_label",
"ITDM MPLS label (Flow Bundle ID in hex)",
"The MPLS label (aka Flow Bundle ID) used by ITDM traffic.",
16, &gbl_ItdmMPLSLabel);
+
+ prefs_register_uint_preference(itdm_module, "ctl_flowno",
+ "I-TDM Control Protocol Flow Number",
+ "Flow Number used by I-TDM Control Protocol traffic.",
+ 10, &gbl_ItdmCTLFlowNo);
}
void
git.samba.org / obnox / wireshark / wip.git / commitdiff