/* 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 * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "config.h" #include #include #include "packet-fc.h" #include "packet-fcsb3.h" void proto_register_fcsbccs(void); void proto_reg_handoff_fcsbccs(void); static dissector_handle_t fc_sbccs_handle; /* Initialize the protocol and registered fields */ static int proto_fc_sbccs; static int hf_sbccs_chid; static int hf_sbccs_cuid; static int hf_sbccs_devaddr; static int hf_sbccs_ccw; static int hf_sbccs_token; static int hf_sbccs_dib_iucnt; static int hf_sbccs_dib_datacnt; static int hf_sbccs_dib_ccw_cmd; static int hf_sbccs_dib_ccw_cnt; static int hf_sbccs_dib_residualcnt; static int hf_sbccs_dib_qtuf; static int hf_sbccs_dib_qtu; static int hf_sbccs_dib_dtuf; static int hf_sbccs_dib_dtu; static int hf_sbccs_dib_ctlfn; static int hf_sbccs_lrc; static int hf_sbccs_dib_iupacing; static int hf_sbccs_dev_xcp_code; static int hf_sbccs_prg_pth_errcode; static int hf_sbccs_prg_rsp_errcode; static int hf_sbccs_dib_ctccntr; static int hf_sbccs_dib_lprcode; static int hf_sbccs_dib_tin_imgid_cnt; static int hf_sbccs_dib_lrjcode; static int hf_sbccs_dib_ioprio; static int hf_sbccs_dib_linkctlfn; static int hf_sbccs_iui; static int hf_sbccs_iui_as; static int hf_sbccs_iui_es; static int hf_sbccs_iui_val; static int hf_sbccs_dhflags; static int hf_sbccs_dhflags_end; static int hf_sbccs_dhflags_chaining; static int hf_sbccs_dhflags_earlyend; static int hf_sbccs_dhflags_nocrc; static int hf_sbccs_dib_ccw_flags; static int hf_sbccs_dib_ccw_flags_cd; static int hf_sbccs_dib_ccw_flags_cc; static int hf_sbccs_dib_ccw_flags_sli; static int hf_sbccs_dib_ccw_flags_crr; static int hf_sbccs_dib_cmdflags; static int hf_sbccs_dib_cmdflags_du; static int hf_sbccs_dib_cmdflags_coc; static int hf_sbccs_dib_cmdflags_syr; static int hf_sbccs_dib_cmdflags_rex; static int hf_sbccs_dib_cmdflags_sss; static int hf_sbccs_dib_statusflags; static int hf_sbccs_dib_statusflags_ffc; static int hf_sbccs_dib_statusflags_ci; static int hf_sbccs_dib_statusflags_cr; static int hf_sbccs_dib_statusflags_lri; static int hf_sbccs_dib_statusflags_rv; static int hf_sbccs_dib_status; static int hf_sbccs_dib_status_attention; static int hf_sbccs_dib_status_modifier; static int hf_sbccs_dib_status_cue; static int hf_sbccs_dib_status_busy; static int hf_sbccs_dib_status_channelend; static int hf_sbccs_dib_status_deviceend; static int hf_sbccs_dib_status_unit_check; static int hf_sbccs_dib_status_unit_exception; static int hf_sbccs_dib_ctlparam; static int hf_sbccs_dib_ctlparam_rc; static int hf_sbccs_dib_ctlparam_ru; static int hf_sbccs_dib_ctlparam_ro; static int hf_sbccs_dib_linkctlinfo; static int hf_sbccs_dib_linkctlinfo_ctcconn; static int hf_sbccs_dib_linkctlinfo_ecrcg; static int hf_sbccs_logical_path; /* Initialize the subtree pointers */ static int ett_fc_sbccs; static int ett_sbccs_iui; static int ett_sbccs_dhflags; static int ett_sbccs_dib_ccw_flags; static int ett_sbccs_dib_cmdflags; static int ett_sbccs_dib_statusflags; static int ett_sbccs_dib_status; static int ett_sbccs_dib_ctlparam; static int ett_sbccs_dib_linkctlinfo; #if 0 typedef struct { uint32_t conv_id; uint32_t 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, uint16_t 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, uint16_t 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, uint16_t 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, uint8_t 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, uint8_t 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, uint8_t 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, uint8_t 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, uint32_t 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, unsigned offset, uint16_t *ch_cu_id, uint16_t *dev_addr, uint16_t *ccw) { *ch_cu_id = *dev_addr = *ccw = 0; *ch_cu_id = (tvb_get_uint8 (tvb, offset+1)) << 8; *ch_cu_id |= tvb_get_uint8 (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, unsigned offset) { proto_tree *sb3hdr_tree; proto_tree *iuhdr_tree; uint8_t iui, dhflags; unsigned 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_uint8 (tvb, offset); dissect_iui_flags(iuhdr_tree, tvb, offset, iui); dhflags = tvb_get_uint8 (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, unsigned 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, unsigned offset) { uint8_t flags; col_append_fstr (pinfo->cinfo, COL_INFO, ": %s", val_to_str (tvb_get_uint8 (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_uint8 (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_uint8 (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, unsigned offset) { uint8_t flags; bool rv_valid, qparam_valid; tvbuff_t *next_tvb; uint16_t supp_status_cnt = 0; if (tree) { flags = tvb_get_uint8 (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_uint8 (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, unsigned offset) { uint8_t ctlfn; ctlfn = tvb_get_uint8 (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, unsigned offset) { uint8_t link_ctl; uint16_t ctl_info; unsigned link_payload_len, i; col_append_fstr (pinfo->cinfo, COL_INFO, ": %s", val_to_str (tvb_get_uint8 (tvb, offset+1), fc_sbccs_dib_link_ctl_fn_val, "0x%x")); if (tree) { link_ctl = tvb_get_uint8 (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_) { uint8_t type; uint16_t ch_cu_id, dev_addr, ccw; unsigned 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_UINT16, 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 int *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)); fc_sbccs_handle = register_dissector("fcsb3", dissect_fc_sbccs, proto_fc_sbccs); } void proto_reg_handoff_fcsbccs (void) { 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: */