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wireshark/epan/dissectors/packet-fcsb3.c

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/* packet-fc-sb3.c
* Routines for Fibre Channel Single Byte Protocol (SBCCS); used in FICON.
* This decoder is for FC-SB3 version 1.4
* Copyright 2003, Dinesh G Dutt <ddutt@cisco.com>
*
* 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-fc.h"
#include "packet-fcsb3.h"
void proto_register_fcsbccs(void);
void proto_reg_handoff_fcsbccs(void);
/* Initialize the protocol and registered fields */
static int proto_fc_sbccs = -1;
static int hf_sbccs_chid = -1;
static int hf_sbccs_cuid = -1;
static int hf_sbccs_devaddr = -1;
static int hf_sbccs_ccw = -1;
static int hf_sbccs_token = -1;
static int hf_sbccs_dib_iucnt = -1;
static int hf_sbccs_dib_datacnt = -1;
static int hf_sbccs_dib_ccw_cmd = -1;
static int hf_sbccs_dib_ccw_cnt = -1;
static int hf_sbccs_dib_residualcnt = -1;
static int hf_sbccs_dib_qtuf = -1;
static int hf_sbccs_dib_qtu = -1;
static int hf_sbccs_dib_dtuf = -1;
static int hf_sbccs_dib_dtu = -1;
static int hf_sbccs_dib_ctlfn = -1;
static int hf_sbccs_lrc = -1;
static int hf_sbccs_dib_iupacing = -1;
static int hf_sbccs_dev_xcp_code = -1;
static int hf_sbccs_prg_pth_errcode = -1;
static int hf_sbccs_prg_rsp_errcode = -1;
static int hf_sbccs_dib_ctccntr = -1;
static int hf_sbccs_dib_lprcode = -1;
static int hf_sbccs_dib_tin_imgid_cnt = -1;
static int hf_sbccs_dib_lrjcode = -1;
static int hf_sbccs_dib_ioprio = -1;
static int hf_sbccs_dib_linkctlfn = -1;
static int hf_sbccs_iui = -1;
static int hf_sbccs_iui_as = -1;
static int hf_sbccs_iui_es = -1;
static int hf_sbccs_iui_val = -1;
static int hf_sbccs_dhflags = -1;
static int hf_sbccs_dhflags_end = -1;
static int hf_sbccs_dhflags_chaining = -1;
static int hf_sbccs_dhflags_earlyend = -1;
static int hf_sbccs_dhflags_nocrc = -1;
static int hf_sbccs_dib_ccw_flags = -1;
static int hf_sbccs_dib_ccw_flags_cd = -1;
static int hf_sbccs_dib_ccw_flags_cc = -1;
static int hf_sbccs_dib_ccw_flags_sli = -1;
static int hf_sbccs_dib_ccw_flags_crr = -1;
static int hf_sbccs_dib_cmdflags = -1;
static int hf_sbccs_dib_cmdflags_du = -1;
static int hf_sbccs_dib_cmdflags_coc = -1;
static int hf_sbccs_dib_cmdflags_syr = -1;
static int hf_sbccs_dib_cmdflags_rex = -1;
static int hf_sbccs_dib_cmdflags_sss = -1;
static int hf_sbccs_dib_statusflags = -1;
static int hf_sbccs_dib_statusflags_ffc = -1;
static int hf_sbccs_dib_statusflags_ci = -1;
static int hf_sbccs_dib_statusflags_cr = -1;
static int hf_sbccs_dib_statusflags_lri = -1;
static int hf_sbccs_dib_statusflags_rv = -1;
static int hf_sbccs_dib_status = -1;
static int hf_sbccs_dib_status_attention = -1;
static int hf_sbccs_dib_status_modifier = -1;
static int hf_sbccs_dib_status_cue = -1;
static int hf_sbccs_dib_status_busy = -1;
static int hf_sbccs_dib_status_channelend = -1;
static int hf_sbccs_dib_status_deviceend = -1;
static int hf_sbccs_dib_status_unit_check = -1;
static int hf_sbccs_dib_status_unit_exception = -1;
static int hf_sbccs_dib_ctlparam = -1;
static int hf_sbccs_dib_ctlparam_rc = -1;
static int hf_sbccs_dib_ctlparam_ru = -1;
static int hf_sbccs_dib_ctlparam_ro = -1;
static int hf_sbccs_dib_linkctlinfo = -1;
static int hf_sbccs_dib_linkctlinfo_ctcconn = -1;
static int hf_sbccs_dib_linkctlinfo_ecrcg = -1;
static int hf_sbccs_logical_path = -1;
/* Initialize the subtree pointers */
static gint ett_fc_sbccs = -1;
static gint ett_sbccs_iui = -1;
static gint ett_sbccs_dhflags = -1;
static gint ett_sbccs_dib_ccw_flags = -1;
static gint ett_sbccs_dib_cmdflags = -1;
static gint ett_sbccs_dib_statusflags = -1;
static gint ett_sbccs_dib_status = -1;
static gint ett_sbccs_dib_ctlparam = -1;
static gint ett_sbccs_dib_linkctlinfo = -1;
#if 0
typedef struct {
guint32 conv_id;
guint32 task_id;
} sb3_task_id_t;
#endif
static const value_string fc_sbccs_iu_val[] = {
{FC_SBCCS_IU_DATA, "Data"},
{FC_SBCCS_IU_CMD_HDR, "Command Header"},
{FC_SBCCS_IU_STATUS, "Status"},
{FC_SBCCS_IU_CTL, "Control"},
{FC_SBCCS_IU_CMD_DATA, "Command Header & Data"},
{FC_SBCCS_IU_CMD_LINK_CTL, "Link Control"},
{0x6, "Reserved"},
{0x7, "Reserved"},
{0x0, NULL},
};
static const value_string fc_sbccs_dib_cmd_val[] = {
{ 0, "Reserved"},
{ 1, "Write"},
{ 2, "Read"},
{ 3, "Control"},
{ 4, "Sense"},
{ 5, "Write (Modifier)"},
{ 6, "Read (Modifier)"},
{ 7, "Control (Modifier)"},
{ 8, "Reserved"},
{ 9, "Write (Modifier)"},
{10, "Read (Modifier)"},
{11, "Control (Modifier)"},
{12, "Read Backward"},
{13, "Write (Modifier)"},
{14, "Read (Modifier)"},
{15, "Control (Modifier)"},
{0, NULL},
};
static const value_string fc_sbccs_dib_ctl_fn_val[] = {
{FC_SBCCS_CTL_FN_CTL_END, "Control End"},
{FC_SBCCS_CTL_FN_CMD_RSP, "Command Response"},
{FC_SBCCS_CTL_FN_STK_STS, "Stack Status"},
{FC_SBCCS_CTL_FN_CANCEL, "Cancel"},
{FC_SBCCS_CTL_FN_SYS_RST, "System Reset"},
{FC_SBCCS_CTL_FN_SEL_RST, "Selective Reset"},
{FC_SBCCS_CTL_FN_REQ_STS, "Request Status"},
{FC_SBCCS_CTL_FN_DEV_XCP, "Device Level Exception"},
{FC_SBCCS_CTL_FN_STS_ACC, "Status Accepted"},
{FC_SBCCS_CTL_FN_DEV_ACK, "Device-Level Ack"},
{FC_SBCCS_CTL_FN_PRG_PTH, "Purge Path"},
{FC_SBCCS_CTL_FN_PRG_RSP, "Purge Path Response"},
{0, NULL},
};
static const value_string fc_sbccs_dib_dev_xcpcode_val[] = {
{1, "Address Exception"},
{0, NULL},
};
static const value_string fc_sbccs_dib_purge_path_err_val[] = {
{ 0, "Error Code Xfer Not Supported"},
{ 1, "SB-3 Protocol Timeout"},
{ 2, "SB-3 Link Failure"},
{ 3, "Reserved"},
{ 4, "SB-3 Offline Condition"},
{ 5, "FC-PH Link Failure"},
{ 6, "SB-3 Length Error"},
{ 7, "LRC Error"},
{ 8, "SB-3 CRC Error"},
{ 9, "IU Count Error"},
{10, "SB-3 Link Level Protocol Error"},
{11, "SB-3 Device Level Protocol Error"},
{12, "Receive ABTS"},
{13, "Cancel Function Timeout"},
{14, "Abnormal Termination of Xchg"},
{15, "Reserved"},
{0, NULL},
};
static const value_string fc_sbccs_dib_purge_path_rsp_err_val[] = {
{ 0, "No Errors"},
{ 1, "SB-3 Protocol Timeout"},
{ 2, "SB-3 Link Failure"},
{ 3, "Logical Path Timeout Error"},
{ 4, "SB-3 Offline Condition"},
{ 5, "FC-PH Link Failure"},
{ 6, "SB-3 Length Error"},
{ 7, "LRC Error"},
{ 8, "SB-3 CRC Error"},
{ 9, "IU Count Error"},
{10, "SB-3 Link Level Protocol Error"},
{11, "SB-3 Device Level Protocol Error"},
{12, "Receive ABTS"},
{13, "Reserved"},
{14, "Abnormal Termination of Xchg"},
{15, "Logical Path Not Estd"},
{16, "Test Init Result Error"},
{0, NULL},
};
static const value_string fc_sbccs_dib_link_ctl_fn_val[] = {
{FC_SBCCS_LINK_CTL_FN_ELP, "ELP"},
{FC_SBCCS_LINK_CTL_FN_RLP, "RLP"},
{FC_SBCCS_LINK_CTL_FN_TIN, "TIN"},
{FC_SBCCS_LINK_CTL_FN_LPE, "LPE"},
{FC_SBCCS_LINK_CTL_FN_LPR, "LPR"},
{FC_SBCCS_LINK_CTL_FN_TIR, "TIR"},
{FC_SBCCS_LINK_CTL_FN_LRJ, "LRJ"},
{FC_SBCCS_LINK_CTL_FN_LBY, "LBY"},
{FC_SBCCS_LINK_CTL_FN_LACK, "LACK"},
{0, NULL},
};
static const value_string fc_sbccs_dib_lpr_errcode_val[] = {
{0x0, "Response to RLP"},
{0x1, "Optional Features Conflict"},
{0x2, "Out of Resources"},
{0x3, "Device Init In Progress"},
{0x4, "No CU Image"},
{0x0, NULL},
};
static const value_string fc_sbccs_dib_lrj_errcode_val[] = {
{0x6, "Logical Path Not Estd"},
{0x9, "Protocol Error"},
{0x0, NULL},
};
static void
dissect_iui_flags (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint16 flags)
{
static int * const iui_flags[] = {
&hf_sbccs_iui_as,
&hf_sbccs_iui_es,
&hf_sbccs_iui_val,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_iui,
ett_sbccs_iui, iui_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static void
dissect_linkctlinfo (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint16 flags)
{
static int * const linkctlinfo_flags[] = {
&hf_sbccs_dib_linkctlinfo_ctcconn,
&hf_sbccs_dib_linkctlinfo_ecrcg,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dib_linkctlinfo,
ett_sbccs_dib_linkctlinfo, linkctlinfo_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static void
dissect_dh_flags (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint16 flags)
{
static int * const dh_flags[] = {
&hf_sbccs_dhflags_end,
&hf_sbccs_dhflags_chaining,
&hf_sbccs_dhflags_earlyend,
&hf_sbccs_dhflags_nocrc,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dhflags,
ett_sbccs_dhflags, dh_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static void
dissect_ccw_flags (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 flags)
{
static int * const ccw_flags[] = {
&hf_sbccs_dib_ccw_flags_cd,
&hf_sbccs_dib_ccw_flags_cc,
&hf_sbccs_dib_ccw_flags_sli,
&hf_sbccs_dib_ccw_flags_crr,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dib_ccw_flags,
ett_sbccs_dib_ccw_flags, ccw_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static void
dissect_cmd_flags (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 flags)
{
static int * const cmd_flags[] = {
&hf_sbccs_dib_cmdflags_du,
&hf_sbccs_dib_cmdflags_coc,
&hf_sbccs_dib_cmdflags_syr,
&hf_sbccs_dib_cmdflags_rex,
&hf_sbccs_dib_cmdflags_sss,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dib_cmdflags,
ett_sbccs_dib_cmdflags, cmd_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static const value_string status_ffc_val[] = {
{ 0, "" },
{ 1, "FFC:Queuing Information Valid" },
{ 2, "FFC:Resetting Event" },
{ 0, NULL }
};
static void
dissect_status_flags (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 flags)
{
static int * const status_flags[] = {
&hf_sbccs_dib_statusflags_ffc,
&hf_sbccs_dib_statusflags_ci,
&hf_sbccs_dib_statusflags_cr,
&hf_sbccs_dib_statusflags_lri,
&hf_sbccs_dib_statusflags_rv,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dib_statusflags,
ett_sbccs_dib_statusflags, status_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static void
dissect_status (packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint8 flags)
{
static int * const status_flags[] = {
&hf_sbccs_dib_status_attention,
&hf_sbccs_dib_status_modifier,
&hf_sbccs_dib_status_cue,
&hf_sbccs_dib_status_busy,
&hf_sbccs_dib_status_channelend,
&hf_sbccs_dib_status_deviceend,
&hf_sbccs_dib_status_unit_check,
&hf_sbccs_dib_status_unit_exception,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dib_status,
ett_sbccs_dib_status, status_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
if (flags & 0x80) {
col_append_str(pinfo->cinfo, COL_INFO, " Attention");
}
if (flags & 0x40) {
col_append_str(pinfo->cinfo, COL_INFO, " Status Modifier");
}
if (flags & 0x20) {
col_append_str(pinfo->cinfo, COL_INFO, " Control-Unit End");
}
if (flags & 0x10) {
col_append_str(pinfo->cinfo, COL_INFO, " Busy");
}
if (flags & 0x08) {
col_append_str(pinfo->cinfo, COL_INFO, " Channel End");
}
if (flags & 0x04) {
col_append_str(pinfo->cinfo, COL_INFO, " Device End");
}
if (flags & 0x02) {
col_append_str(pinfo->cinfo, COL_INFO, " Unit Check");
}
if (flags & 0x01) {
col_append_str(pinfo->cinfo, COL_INFO, " Unit Exception");
}
}
static void
dissect_sel_rst_param (proto_tree *parent_tree, tvbuff_t *tvb, int offset, guint32 flags)
{
static int * const rst_param_flags[] = {
&hf_sbccs_dib_ctlparam_rc,
&hf_sbccs_dib_ctlparam_ru,
&hf_sbccs_dib_ctlparam_ro,
NULL
};
proto_tree_add_bitmask_value_with_flags(parent_tree, tvb, offset, hf_sbccs_dib_ctlparam,
ett_sbccs_dib_ctlparam, rst_param_flags, flags, BMT_NO_FALSE|BMT_NO_TFS);
}
static void get_fc_sbccs_conv_data (tvbuff_t *tvb, guint offset,
guint16 *ch_cu_id, guint16 *dev_addr,
guint16 *ccw)
{
*ch_cu_id = *dev_addr = *ccw = 0;
*ch_cu_id = (tvb_get_guint8 (tvb, offset+1)) << 8;
*ch_cu_id |= tvb_get_guint8 (tvb, offset+3);
*dev_addr = tvb_get_ntohs (tvb, offset+4);
*ccw = tvb_get_ntohs (tvb, offset+10);
}
/* Decode both the SB-3 and basic IU header */
static void
dissect_fc_sbccs_sb3_iu_hdr (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
guint offset)
{
proto_tree *sb3hdr_tree;
proto_tree *iuhdr_tree;
guint8 iui, dhflags;
guint type;
/* Decode the basic SB3 and IU header and determine type of frame */
type = get_fc_sbccs_iu_type (tvb, offset);
col_add_str (pinfo->cinfo, COL_INFO, val_to_str (type, fc_sbccs_iu_val,
"0x%x"));
if (tree) {
/* Dissect SB3 header first */
sb3hdr_tree = proto_tree_add_subtree(tree, tvb, offset, FC_SBCCS_SB3_HDR_SIZE,
ett_fc_sbccs, NULL, "SB-3 Header");
proto_tree_add_item (sb3hdr_tree, hf_sbccs_chid, tvb, offset+1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (sb3hdr_tree, hf_sbccs_cuid, tvb, offset+3, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (sb3hdr_tree, hf_sbccs_devaddr, tvb, offset+4, 2, ENC_BIG_ENDIAN);
/* Dissect IU Header */
iuhdr_tree = proto_tree_add_subtree(tree, tvb, offset + FC_SBCCS_SB3_HDR_SIZE,
FC_SBCCS_IU_HDR_SIZE, ett_fc_sbccs, NULL, "IU Header");
offset += FC_SBCCS_SB3_HDR_SIZE;
iui = tvb_get_guint8 (tvb, offset);
dissect_iui_flags(iuhdr_tree, tvb, offset, iui);
dhflags = tvb_get_guint8 (tvb, offset+1);
dissect_dh_flags(iuhdr_tree, tvb, offset+1, dhflags);
proto_tree_add_item (iuhdr_tree, hf_sbccs_ccw, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (iuhdr_tree, hf_sbccs_token, tvb, offset+5, 3, ENC_BIG_ENDIAN);
}
}
static void dissect_fc_sbccs_dib_data_hdr (tvbuff_t *tvb,
packet_info *pinfo _U_,
proto_tree *tree, guint offset)
{
if (tree) {
proto_tree_add_item (tree, hf_sbccs_dib_iucnt, tvb, offset+9, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_datacnt, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_lrc, tvb, offset+12, 4, ENC_BIG_ENDIAN);
}
}
static void dissect_fc_sbccs_dib_cmd_hdr (tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, guint offset)
{
guint8 flags;
col_append_fstr (pinfo->cinfo, COL_INFO,
": %s", val_to_str (tvb_get_guint8 (tvb, offset),
fc_sbccs_dib_cmd_val,
"0x%x"));
if (tree) {
proto_tree_add_item (tree, hf_sbccs_dib_ccw_cmd, tvb, offset, 1, ENC_BIG_ENDIAN);
flags = tvb_get_guint8 (tvb, offset+1);
dissect_ccw_flags(tree, tvb, offset+1, flags);
proto_tree_add_item (tree, hf_sbccs_dib_ccw_cnt, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_ioprio, tvb, offset+5, 1, ENC_BIG_ENDIAN);
flags = tvb_get_guint8 (tvb, offset+7);
dissect_cmd_flags(tree, tvb, offset+7, flags);
proto_tree_add_item (tree, hf_sbccs_dib_iucnt, tvb, offset+9, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_datacnt, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_lrc, tvb, offset+12, 4, ENC_BIG_ENDIAN);
}
}
static void dissect_fc_sbccs_dib_status_hdr (tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, guint offset)
{
guint8 flags;
gboolean rv_valid, qparam_valid;
tvbuff_t *next_tvb;
guint16 supp_status_cnt = 0;
if (tree) {
flags = tvb_get_guint8 (tvb, offset);
rv_valid = flags & 0x1; /* if residual count is valid */
qparam_valid = (((flags & 0xE0) >> 5) == 0x1); /* From the FFC field */
dissect_status_flags(tree, tvb, offset, flags);
flags = tvb_get_guint8 (tvb, offset+1);
dissect_status(pinfo, tree, tvb, offset+1, flags);
if (rv_valid) {
proto_tree_add_item (tree, hf_sbccs_dib_residualcnt, tvb, offset+2,
2, ENC_BIG_ENDIAN);
}
else {
proto_tree_add_item (tree, hf_sbccs_dib_iupacing, tvb, offset+3,
1, ENC_BIG_ENDIAN);
}
if (qparam_valid) {
proto_tree_add_item (tree, hf_sbccs_dib_qtuf, tvb, offset+4, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_qtu, tvb, offset+4, 2, ENC_BIG_ENDIAN);
}
proto_tree_add_item (tree, hf_sbccs_dib_dtuf, tvb, offset+6, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_dtu, tvb, offset+6, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_iucnt, tvb, offset+9, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_datacnt, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_lrc, tvb, offset+12, 4, ENC_BIG_ENDIAN);
}
supp_status_cnt = tvb_get_ntohs (tvb, offset+10);
if (supp_status_cnt) {
next_tvb = tvb_new_subset_remaining (tvb, offset+FC_SBCCS_DIB_LRC_HDR_SIZE);
call_data_dissector(next_tvb, pinfo, tree);
}
}
static void dissect_fc_sbccs_dib_ctl_hdr (tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, guint offset)
{
guint8 ctlfn;
ctlfn = tvb_get_guint8 (tvb, offset);
col_append_fstr (pinfo->cinfo, COL_INFO,
": %s",
val_to_str (ctlfn,
fc_sbccs_dib_ctl_fn_val,
"0x%x"));
if (tree) {
proto_tree_add_item (tree, hf_sbccs_dib_ctlfn, tvb, offset, 1, ENC_BIG_ENDIAN);
/* Control Function Parameter is to be interpreted in some cases */
switch (ctlfn) {
case FC_SBCCS_CTL_FN_SEL_RST:
dissect_sel_rst_param(tree, tvb, offset+1, tvb_get_ntoh24 (tvb, offset+1));
break;
case FC_SBCCS_CTL_FN_DEV_XCP:
proto_tree_add_item (tree, hf_sbccs_dev_xcp_code, tvb, offset+1,
1, ENC_BIG_ENDIAN);
break;
case FC_SBCCS_CTL_FN_PRG_PTH:
proto_tree_add_item (tree, hf_sbccs_prg_pth_errcode, tvb, offset+1,
1, ENC_BIG_ENDIAN);
break;
default:
proto_tree_add_item (tree, hf_sbccs_dib_ctlparam, tvb, offset+1,
3, ENC_BIG_ENDIAN);
break;
}
proto_tree_add_item (tree, hf_sbccs_dib_iucnt, tvb, offset+9, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_datacnt, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_lrc, tvb, offset+12, 4, ENC_BIG_ENDIAN);
if (ctlfn == FC_SBCCS_CTL_FN_PRG_RSP) {
/* Need to decode the LESBs */
proto_tree_add_item (tree, hf_sbccs_prg_rsp_errcode, tvb, offset+60,
1, ENC_BIG_ENDIAN);
}
}
}
static void dissect_fc_sbccs_dib_link_hdr (tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, guint offset)
{
guint8 link_ctl;
guint16 ctl_info;
guint link_payload_len, i;
col_append_fstr (pinfo->cinfo, COL_INFO,
": %s",
val_to_str (tvb_get_guint8 (tvb, offset+1),
fc_sbccs_dib_link_ctl_fn_val,
"0x%x"));
if (tree) {
link_ctl = tvb_get_guint8 (tvb, offset+1);
proto_tree_add_item (tree, hf_sbccs_dib_linkctlfn, tvb, offset+1, 1, ENC_BIG_ENDIAN);
ctl_info = tvb_get_ntohs (tvb, offset+2);
switch (link_ctl) {
case FC_SBCCS_LINK_CTL_FN_ELP:
case FC_SBCCS_LINK_CTL_FN_LPE:
dissect_linkctlinfo(tree, tvb, offset+2, ctl_info);
break;
case FC_SBCCS_LINK_CTL_FN_LPR:
proto_tree_add_item (tree, hf_sbccs_dib_lprcode, tvb, offset+2, 1,
ENC_BIG_ENDIAN);
break;
case FC_SBCCS_LINK_CTL_FN_TIN:
proto_tree_add_item (tree, hf_sbccs_dib_tin_imgid_cnt, tvb,
offset+3, 1, ENC_BIG_ENDIAN);
break;
case FC_SBCCS_LINK_CTL_FN_TIR:
proto_tree_add_item (tree, hf_sbccs_dib_tin_imgid_cnt, tvb,
offset+3, 1, ENC_BIG_ENDIAN);
break;
case FC_SBCCS_LINK_CTL_FN_LRJ:
proto_tree_add_item (tree, hf_sbccs_dib_lrjcode, tvb, offset+2,
1, ENC_BIG_ENDIAN);
break;
default:
/* Do Nothing */
break;
}
proto_tree_add_item (tree, hf_sbccs_dib_ctccntr, tvb, offset+4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_iucnt, tvb, offset+9, 1, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_dib_datacnt, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item (tree, hf_sbccs_lrc, tvb, offset+12, 4, ENC_BIG_ENDIAN);
if (link_ctl == FC_SBCCS_LINK_CTL_FN_TIR) {
link_payload_len = tvb_get_ntohs (tvb, offset+10);
i = 0;
offset += 16;
while (i < link_payload_len) {
proto_tree_add_bytes_format(tree, hf_sbccs_logical_path, tvb, offset, 4,
NULL, "Logical Paths %d-%d: %s",
i*8, ((i+4)*8) - 1,
tvb_bytes_to_str_punct(pinfo->pool, tvb, offset, 4, ':'));
i += 4;
offset += 4;
}
}
}
}
static int dissect_fc_sbccs (tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, void* data _U_)
{
guint8 type;
guint16 ch_cu_id, dev_addr, ccw;
guint offset = 0;
proto_item *ti;
proto_tree *sb3_tree = NULL;
proto_tree *dib_tree = NULL;
tvbuff_t *next_tvb;
conversation_t *conversation;
#if 0
sb3_task_id_t task_key;
#endif
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FC-SB3");
/* Decode the basic SB3 and IU header and determine type of frame */
type = get_fc_sbccs_iu_type (tvb, offset);
get_fc_sbccs_conv_data (tvb, offset, &ch_cu_id, &dev_addr, &ccw);
col_add_str (pinfo->cinfo, COL_INFO, val_to_str (type, fc_sbccs_iu_val,
"0x%x"));
/* Retrieve conversation state to determine expected payload */
conversation = find_conversation (pinfo->num, &pinfo->src, &pinfo->dst,
CONVERSATION_SBCCS, ch_cu_id, dev_addr, 0);
if (conversation) {
#if 0
task_key.conv_id = conversation->index;
task_key.task_id = ccw;
#endif
}
else if ((type == FC_SBCCS_IU_CMD_HDR) ||
(type != FC_SBCCS_IU_CMD_DATA)) {
#if 0
conversation =
#endif
conversation_new (pinfo->num, &pinfo->src, &pinfo->dst,
CONVERSATION_SBCCS, ch_cu_id, dev_addr, 0);
#if 0
task_key.conv_id = conversation->index;
task_key.task_id = ccw;
#endif
}
if (tree) {
ti = proto_tree_add_protocol_format (tree, proto_fc_sbccs, tvb, 0, -1,
"FC-SB3");
sb3_tree = proto_item_add_subtree (ti, ett_fc_sbccs);
dissect_fc_sbccs_sb3_iu_hdr (tvb, pinfo, sb3_tree, offset);
offset += (FC_SBCCS_SB3_HDR_SIZE + FC_SBCCS_IU_HDR_SIZE);
dib_tree = proto_tree_add_subtree(sb3_tree, tvb, offset,
FC_SBCCS_DIB_LRC_HDR_SIZE, ett_fc_sbccs, NULL, "DIB Header");
}
else {
offset += (FC_SBCCS_SB3_HDR_SIZE + FC_SBCCS_IU_HDR_SIZE);
}
switch (type) {
case FC_SBCCS_IU_DATA:
dissect_fc_sbccs_dib_data_hdr (tvb, pinfo, dib_tree, offset);
break;
case FC_SBCCS_IU_CMD_HDR:
case FC_SBCCS_IU_CMD_DATA:
dissect_fc_sbccs_dib_cmd_hdr (tvb, pinfo, dib_tree, offset);
break;
case FC_SBCCS_IU_STATUS:
dissect_fc_sbccs_dib_status_hdr (tvb, pinfo, dib_tree, offset);
break;
case FC_SBCCS_IU_CTL:
dissect_fc_sbccs_dib_ctl_hdr (tvb, pinfo, dib_tree, offset);
break;
case FC_SBCCS_IU_CMD_LINK_CTL:
dissect_fc_sbccs_dib_link_hdr (tvb, pinfo, dib_tree, offset);
break;
default:
next_tvb = tvb_new_subset_remaining (tvb, offset);
call_data_dissector(next_tvb, pinfo, dib_tree);
break;
}
if ((get_fc_sbccs_iu_type (tvb, 0) != FC_SBCCS_IU_CTL) &&
(get_fc_sbccs_iu_type (tvb, 0) != FC_SBCCS_IU_CMD_LINK_CTL)) {
next_tvb = tvb_new_subset_remaining (tvb, offset+FC_SBCCS_DIB_LRC_HDR_SIZE);
call_data_dissector(next_tvb, pinfo, tree);
}
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark */
/* this format is required because a script is used to build the C function
that calls all the protocol registration.
*/
void
proto_register_fcsbccs (void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{ &hf_sbccs_chid,
{ "Channel Image ID", "fcsb3.chid",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_cuid,
{ "Control Unit Image ID", "fcsb3.cuid",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_devaddr,
{ "Device Address", "fcsb3.devaddr",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_iui,
{ "Information Unit Identifier", "fcsb3.iui",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dhflags,
{ "DH Flags", "fcsb3.dhflags",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_ccw,
{ "CCW Number", "fcsb3.ccw",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_token,
{ "Token", "fcsb3.token",
FT_UINT24, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_iucnt,
{ "DIB IU Count", "fcsb3.iucnt",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_datacnt,
{ "DIB Data Byte Count", "fcsb3.databytecnt",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_cmd,
{ "CCW Command", "fcsb3.ccwcmd",
FT_UINT8, BASE_HEX, VALS (fc_sbccs_dib_cmd_val), 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_cnt,
{ "CCW Count", "fcsb3.ccwcnt",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_ioprio,
{ "I/O Priority", "fcsb3.ioprio",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_status,
{ "Status", "fcsb3.status",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_residualcnt,
{ "Residual Count", "fcsb3.residualcnt",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_iupacing,
{ "IU Pacing", "fcsb3.iupacing",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_qtuf,
{ "Queue-Time Unit Factor", "fcsb3.qtuf",
FT_UINT8, BASE_DEC, NULL, 0xF0,
NULL, HFILL}},
{ &hf_sbccs_dib_qtu,
{ "Queue-Time Unit", "fcsb3.qtu",
FT_UINT16, BASE_DEC, NULL, 0x0FFF,
NULL, HFILL}},
{ &hf_sbccs_dib_dtuf,
{ "Defer-Time Unit Function", "fcsb3.dtuf",
FT_UINT8, BASE_DEC, NULL, 0xF0,
NULL, HFILL}},
{ &hf_sbccs_dib_dtu,
{ "Defer-Time Unit", "fcsb3.dtu",
FT_UINT16, BASE_DEC, NULL, 0x0FFF,
NULL, HFILL}},
{ &hf_sbccs_dib_ctlfn,
{ "Control Function", "fcsb3.ctlfn",
FT_UINT8, BASE_HEX, VALS (fc_sbccs_dib_ctl_fn_val), 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_linkctlfn,
{ "Link Control Function", "fcsb3.linkctlfn",
FT_UINT8, BASE_HEX, VALS (fc_sbccs_dib_link_ctl_fn_val), 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_ctccntr,
{ "CTC Counter", "fcsb3.ctccntr",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_lrc,
{ "LRC", "fcsb3.lrc",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dev_xcp_code,
{ "Device Level Exception Code", "fcsb3.dip.xcpcode",
FT_UINT8, BASE_DEC, VALS (fc_sbccs_dib_dev_xcpcode_val), 0x0,
NULL, HFILL}},
{ &hf_sbccs_prg_pth_errcode,
{ "Purge Path Error Code", "fcsb3.purgepathcode",
FT_UINT8, BASE_DEC, VALS (fc_sbccs_dib_purge_path_err_val), 0x0,
NULL, HFILL}},
{ &hf_sbccs_prg_rsp_errcode,
{ "Purge Path Response Error Code", "fcsb3.purgepathrspcode",
FT_UINT8, BASE_DEC, VALS (fc_sbccs_dib_purge_path_rsp_err_val), 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_lprcode,
{ "LPR Reason Code", "fcsb3.lprcode",
FT_UINT8, BASE_DEC, VALS (fc_sbccs_dib_lpr_errcode_val), 0xF,
NULL, HFILL}},
{ &hf_sbccs_dib_tin_imgid_cnt,
{ "TIN Image ID", "fcsb3.tinimageidcnt",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_lrjcode,
{ "LRJ Reason Code", "fcsb3.lrjcode",
FT_UINT8, BASE_HEX, VALS (fc_sbccs_dib_lrj_errcode_val), 0x7F,
NULL, HFILL}},
{ &hf_sbccs_iui_as,
{ "AS", "fcsb3.iui.as",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x10,
NULL, HFILL}},
{ &hf_sbccs_iui_es,
{ "ES", "fcsb3.iui.es",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x08,
NULL, HFILL}},
{ &hf_sbccs_iui_val,
{ "Val", "fcsb3.iui.val",
FT_UINT8, BASE_HEX, VALS(fc_sbccs_iu_val), 0x07,
NULL, HFILL}},
{ &hf_sbccs_dhflags_end,
{ "End", "fcsb3.dhflags.end",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80,
NULL, HFILL}},
{ &hf_sbccs_dhflags_chaining,
{ "Chaining", "fcsb3.dhflags.chaining",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x10,
NULL, HFILL}},
{ &hf_sbccs_dhflags_earlyend,
{ "Early End", "fcsb3.dhflags.earlyend",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x08,
NULL, HFILL}},
{ &hf_sbccs_dhflags_nocrc,
{ "No CRC", "fcsb3.dhflags.nocrc",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x04,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_flags,
{ "CCW Control Flags", "fcsb3.ccwflags",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_flags_cd,
{ "CD", "fcsb3.ccwflags.cd",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_flags_cc,
{ "CC", "fcsb3.ccwflags.cc",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x40,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_flags_sli,
{ "SLI", "fcsb3.ccwflags.sli",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x20,
NULL, HFILL}},
{ &hf_sbccs_dib_ccw_flags_crr,
{ "CRR", "fcsb3.ccwflags.crr",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x08,
NULL, HFILL}},
{ &hf_sbccs_dib_cmdflags,
{ "Command Flags", "fcsb3.cmdflags",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_cmdflags_du,
{ "DU", "fcsb3.cmdflags.du",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x10,
NULL, HFILL}},
{ &hf_sbccs_dib_cmdflags_coc,
{ "COC", "fcsb3.cmdflags.coc",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x08,
NULL, HFILL}},
{ &hf_sbccs_dib_cmdflags_syr,
{ "SYR", "fcsb3.cmdflags.syr",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x04,
NULL, HFILL}},
{ &hf_sbccs_dib_cmdflags_rex,
{ "REX", "fcsb3.cmdflags.rex",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x02,
NULL, HFILL}},
{ &hf_sbccs_dib_cmdflags_sss,
{ "SSS", "fcsb3.cmdflags.sss",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01,
NULL, HFILL}},
{ &hf_sbccs_dib_statusflags,
{ "Status Flags", "fcsb3.statusflags",
FT_UINT8, BASE_HEX, NULL, 0,
NULL, HFILL}},
{ &hf_sbccs_dib_statusflags_ffc,
{ "FFC", "fcsb3.statusflags.ffc",
FT_UINT8, BASE_HEX, VALS(status_ffc_val), 0xE0,
NULL, HFILL}},
{ &hf_sbccs_dib_statusflags_ci,
{ "CI", "fcsb3.statusflags.ci",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x10,
NULL, HFILL}},
{ &hf_sbccs_dib_statusflags_cr,
{ "CR", "fcsb3.statusflags.cr",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x04,
NULL, HFILL}},
{ &hf_sbccs_dib_statusflags_lri,
{ "LRI", "fcsb3.statusflags.lri",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x02,
NULL, HFILL}},
{ &hf_sbccs_dib_statusflags_rv,
{ "RV", "fcsb3.statusflags.rv",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01,
NULL, HFILL}},
{ &hf_sbccs_dib_status_attention,
{ "Attention", "fcsb3.status.attention",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80,
NULL, HFILL}},
{ &hf_sbccs_dib_status_modifier,
{ "Status Modifier", "fcsb3.status.modifier",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x40,
NULL, HFILL}},
{ &hf_sbccs_dib_status_cue,
{ "Control-Unit End", "fcsb3.status.cue",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x20,
NULL, HFILL}},
{ &hf_sbccs_dib_status_busy,
{ "Busy", "fcsb3.status.busy",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x10,
NULL, HFILL}},
{ &hf_sbccs_dib_status_channelend,
{ "Channel End", "fcsb3.status.channel_end",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x08,
NULL, HFILL}},
{ &hf_sbccs_dib_status_deviceend,
{ "Device End", "fcsb3.status.device_end",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x04,
NULL, HFILL}},
{ &hf_sbccs_dib_status_unit_check,
{ "Unit Check", "fcsb3.status.unit_check",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x02,
NULL, HFILL}},
{ &hf_sbccs_dib_status_unit_exception,
{ "Unit Exception", "fcsb3.status.unitexception",
FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01,
NULL, HFILL}},
{ &hf_sbccs_dib_ctlparam,
{ "Control Parameters", "fcsb3.ctlparam",
FT_UINT24, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_ctlparam_rc,
{ "RC", "fcsb3.ctlparam.rc",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), 0x000080,
NULL, HFILL}},
{ &hf_sbccs_dib_ctlparam_ru,
{ "RU", "fcsb3.ctlparam.ru",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), 0x000010,
NULL, HFILL}},
{ &hf_sbccs_dib_ctlparam_ro,
{ "RO", "fcsb3.ctlparam.ro",
FT_BOOLEAN, 24, TFS(&tfs_set_notset), 0x000008,
NULL, HFILL}},
{ &hf_sbccs_dib_linkctlinfo,
{ "Link Control Information", "fcsb3.linkctlinfo",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL}},
{ &hf_sbccs_dib_linkctlinfo_ctcconn,
{ "CTC Conn", "fcsb3.linkctlinfo.ctc_conn",
FT_BOOLEAN, 16, TFS(&tfs_supported_not_supported), 0x0080,
NULL, HFILL}},
{ &hf_sbccs_dib_linkctlinfo_ecrcg,
{ "Enhanced CRC Generation", "fcsb3.linkctlinfo.ecrcg",
FT_BOOLEAN, 16, TFS(&tfs_supported_not_supported), 0x0001,
NULL, HFILL}},
{ &hf_sbccs_logical_path,
{ "Logical Path", "fcsb3.logical_path",
FT_BYTES, SEP_COLON, NULL, 0x0,
NULL, HFILL}},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_fc_sbccs,
&ett_sbccs_iui,
&ett_sbccs_dhflags,
&ett_sbccs_dib_ccw_flags,
&ett_sbccs_dib_cmdflags,
&ett_sbccs_dib_statusflags,
&ett_sbccs_dib_status,
&ett_sbccs_dib_ctlparam,
&ett_sbccs_dib_linkctlinfo,
};
/* Register the protocol name and description */
proto_fc_sbccs = proto_register_protocol ("Fibre Channel Single Byte Command",
"FC-SB3", "fcsb3");
proto_register_field_array(proto_fc_sbccs, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_fcsbccs (void)
{
dissector_handle_t fc_sbccs_handle;
fc_sbccs_handle = create_dissector_handle (dissect_fc_sbccs,
proto_fc_sbccs);
dissector_add_uint("fc.ftype", FC_FTYPE_SBCCS, fc_sbccs_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:
*/
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