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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
commit | e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch) | |
tree | 68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-sna.c | |
parent | Initial commit. (diff) | |
download | wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip |
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-sna.c')
-rw-r--r-- | epan/dissectors/packet-sna.c | 3499 |
1 files changed, 3499 insertions, 0 deletions
diff --git a/epan/dissectors/packet-sna.c b/epan/dissectors/packet-sna.c new file mode 100644 index 0000000..cdf6bfd --- /dev/null +++ b/epan/dissectors/packet-sna.c @@ -0,0 +1,3499 @@ +/* packet-sna.c + * Routines for SNA + * Gilbert Ramirez <gram@alumni.rice.edu> + * Jochen Friedrich <jochen@scram.de> + * + * 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 <epan/llcsaps.h> +#include <epan/ppptypes.h> +#include <epan/address_types.h> +#include <epan/prefs.h> +#include <epan/reassemble.h> +#include <epan/to_str.h> +#include "wsutil/pint.h" + +/* + * See: + * + * http://web.archive.org/web/20020206033700/http://www.wanresources.com/snacell.html + * + * http://web.archive.org/web/20150522015710/http://www.protocols.com/pbook/sna.htm + * + * Systems Network Architecture Formats, GA27-3136-20: + * https://publibz.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/D50A5007/CCONTENTS + * + * Systems Network Architecture Management Services Formats, GC31-8302-03: + * https://publibfp.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/d50x4002/CCONTENTS + */ +void proto_register_sna(void); +void proto_reg_handoff_sna(void); + +static int proto_sna = -1; +static int proto_sna_xid = -1; +static int hf_sna_th = -1; +static int hf_sna_th_0 = -1; +static int hf_sna_th_fid = -1; +static int hf_sna_th_mpf = -1; +static int hf_sna_th_odai = -1; +static int hf_sna_th_efi = -1; +static int hf_sna_th_daf = -1; +static int hf_sna_th_oaf = -1; +static int hf_sna_th_snf = -1; +static int hf_sna_th_dcf = -1; +static int hf_sna_th_lsid = -1; +static int hf_sna_th_tg_sweep = -1; +static int hf_sna_th_er_vr_supp_ind = -1; +static int hf_sna_th_vr_pac_cnt_ind = -1; +static int hf_sna_th_ntwk_prty = -1; +static int hf_sna_th_tgsf = -1; +static int hf_sna_th_mft = -1; +static int hf_sna_th_piubf = -1; +static int hf_sna_th_iern = -1; +static int hf_sna_th_nlpoi = -1; +static int hf_sna_th_nlp_cp = -1; +static int hf_sna_th_ern = -1; +static int hf_sna_th_vrn = -1; +static int hf_sna_th_tpf = -1; +static int hf_sna_th_vr_cwi = -1; +static int hf_sna_th_tg_nonfifo_ind = -1; +static int hf_sna_th_vr_sqti = -1; +static int hf_sna_th_tg_snf = -1; +static int hf_sna_th_vrprq = -1; +static int hf_sna_th_vrprs = -1; +static int hf_sna_th_vr_cwri = -1; +static int hf_sna_th_vr_rwi = -1; +static int hf_sna_th_vr_snf_send = -1; +static int hf_sna_th_dsaf = -1; +static int hf_sna_th_osaf = -1; +static int hf_sna_th_snai = -1; +static int hf_sna_th_def = -1; +static int hf_sna_th_oef = -1; +static int hf_sna_th_sa = -1; +static int hf_sna_th_cmd_fmt = -1; +static int hf_sna_th_cmd_type = -1; +static int hf_sna_th_cmd_sn = -1; +static int hf_sna_th_byte1 = -1; +static int hf_sna_th_byte2 = -1; +static int hf_sna_th_byte3 = -1; +static int hf_sna_th_byte4 = -1; +static int hf_sna_th_byte6 = -1; +static int hf_sna_th_byte16 = -1; + +static int hf_sna_nlp_nhdr = -1; +static int hf_sna_nlp_nhdr_0 = -1; +static int hf_sna_nlp_sm = -1; +static int hf_sna_nlp_tpf = -1; +static int hf_sna_nlp_nhdr_1 = -1; +static int hf_sna_nlp_ft = -1; +static int hf_sna_nlp_tspi = -1; +static int hf_sna_nlp_slowdn1 = -1; +static int hf_sna_nlp_slowdn2 = -1; +static int hf_sna_nlp_fra = -1; +static int hf_sna_nlp_anr = -1; +static int hf_sna_nlp_frh = -1; +static int hf_sna_nlp_thdr = -1; +static int hf_sna_nlp_tcid = -1; +static int hf_sna_nlp_thdr_8 = -1; +static int hf_sna_nlp_setupi = -1; +static int hf_sna_nlp_somi = -1; +static int hf_sna_nlp_eomi = -1; +static int hf_sna_nlp_sri = -1; +static int hf_sna_nlp_rasapi = -1; +static int hf_sna_nlp_retryi = -1; +static int hf_sna_nlp_thdr_9 = -1; +static int hf_sna_nlp_lmi = -1; +static int hf_sna_nlp_cqfi = -1; +static int hf_sna_nlp_osi = -1; +static int hf_sna_nlp_offset = -1; +static int hf_sna_nlp_dlf = -1; +static int hf_sna_nlp_bsn = -1; +static int hf_sna_nlp_opti_len = -1; +static int hf_sna_nlp_opti_type = -1; +static int hf_sna_nlp_opti_0d_version = -1; +static int hf_sna_nlp_opti_0d_4 = -1; +static int hf_sna_nlp_opti_0d_target = -1; +static int hf_sna_nlp_opti_0d_arb = -1; +static int hf_sna_nlp_opti_0d_reliable = -1; +static int hf_sna_nlp_opti_0d_dedicated = -1; +static int hf_sna_nlp_opti_0e_stat = -1; +static int hf_sna_nlp_opti_0e_gap = -1; +static int hf_sna_nlp_opti_0e_idle = -1; +static int hf_sna_nlp_opti_0e_nabsp = -1; +static int hf_sna_nlp_opti_0e_sync = -1; +static int hf_sna_nlp_opti_0e_echo = -1; +static int hf_sna_nlp_opti_0e_rseq = -1; +/* static int hf_sna_nlp_opti_0e_abspbeg = -1; */ +/* static int hf_sna_nlp_opti_0e_abspend = -1; */ +static int hf_sna_nlp_opti_0f_bits = -1; +static int hf_sna_nlp_opti_10_tcid = -1; +static int hf_sna_nlp_opti_12_sense = -1; +static int hf_sna_nlp_opti_14_si_len = -1; +static int hf_sna_nlp_opti_14_si_key = -1; +static int hf_sna_nlp_opti_14_si_2 = -1; +static int hf_sna_nlp_opti_14_si_refifo = -1; +static int hf_sna_nlp_opti_14_si_mobility = -1; +static int hf_sna_nlp_opti_14_si_dirsearch = -1; +static int hf_sna_nlp_opti_14_si_limitres = -1; +static int hf_sna_nlp_opti_14_si_ncescope = -1; +static int hf_sna_nlp_opti_14_si_mnpsrscv = -1; +static int hf_sna_nlp_opti_14_si_maxpsize = -1; +static int hf_sna_nlp_opti_14_si_switch = -1; +static int hf_sna_nlp_opti_14_si_alive = -1; +static int hf_sna_nlp_opti_14_rr_len = -1; +static int hf_sna_nlp_opti_14_rr_key = -1; +static int hf_sna_nlp_opti_14_rr_2 = -1; +static int hf_sna_nlp_opti_14_rr_bfe = -1; +static int hf_sna_nlp_opti_14_rr_num = -1; +static int hf_sna_nlp_opti_22_2 = -1; +static int hf_sna_nlp_opti_22_type = -1; +static int hf_sna_nlp_opti_22_raa = -1; +static int hf_sna_nlp_opti_22_parity = -1; +static int hf_sna_nlp_opti_22_arb = -1; +static int hf_sna_nlp_opti_22_3 = -1; +static int hf_sna_nlp_opti_22_ratereq = -1; +static int hf_sna_nlp_opti_22_raterep = -1; +static int hf_sna_nlp_opti_22_field1 = -1; +static int hf_sna_nlp_opti_22_field2 = -1; +static int hf_sna_nlp_opti_22_field3 = -1; +static int hf_sna_nlp_opti_22_field4 = -1; + +static int hf_sna_rh = -1; +static int hf_sna_rh_0 = -1; +static int hf_sna_rh_1 = -1; +static int hf_sna_rh_2 = -1; +static int hf_sna_rh_rri = -1; +static int hf_sna_rh_ru_category = -1; +static int hf_sna_rh_fi = -1; +static int hf_sna_rh_sdi = -1; +static int hf_sna_rh_bci = -1; +static int hf_sna_rh_eci = -1; +static int hf_sna_rh_dr1 = -1; +static int hf_sna_rh_lcci = -1; +static int hf_sna_rh_dr2 = -1; +static int hf_sna_rh_eri = -1; +static int hf_sna_rh_rti = -1; +static int hf_sna_rh_rlwi = -1; +static int hf_sna_rh_qri = -1; +static int hf_sna_rh_pi = -1; +static int hf_sna_rh_bbi = -1; +static int hf_sna_rh_ebi = -1; +static int hf_sna_rh_cdi = -1; +static int hf_sna_rh_csi = -1; +static int hf_sna_rh_edi = -1; +static int hf_sna_rh_pdi = -1; +static int hf_sna_rh_cebi = -1; +/*static int hf_sna_ru = -1;*/ + +static int hf_sna_gds = -1; +static int hf_sna_gds_len = -1; +static int hf_sna_gds_type = -1; +static int hf_sna_gds_cont = -1; +static int hf_sna_gds_info = -1; + +/* static int hf_sna_xid = -1; */ +static int hf_sna_xid_0 = -1; +static int hf_sna_xid_id = -1; +static int hf_sna_xid_format = -1; +static int hf_sna_xid_type = -1; +static int hf_sna_xid_len = -1; +static int hf_sna_xid_idblock = -1; +static int hf_sna_xid_idnum = -1; +static int hf_sna_xid_3_8 = -1; +static int hf_sna_xid_3_init_self = -1; +static int hf_sna_xid_3_stand_bind = -1; +static int hf_sna_xid_3_gener_bind = -1; +static int hf_sna_xid_3_recve_bind = -1; +static int hf_sna_xid_3_actpu = -1; +static int hf_sna_xid_3_nwnode = -1; +static int hf_sna_xid_3_cp = -1; +static int hf_sna_xid_3_cpcp = -1; +static int hf_sna_xid_3_state = -1; +static int hf_sna_xid_3_nonact = -1; +static int hf_sna_xid_3_cpchange = -1; +static int hf_sna_xid_3_10 = -1; +static int hf_sna_xid_3_asend_bind = -1; +static int hf_sna_xid_3_arecv_bind = -1; +static int hf_sna_xid_3_quiesce = -1; +static int hf_sna_xid_3_pucap = -1; +static int hf_sna_xid_3_pbn = -1; +static int hf_sna_xid_3_pacing = -1; +static int hf_sna_xid_3_11 = -1; +static int hf_sna_xid_3_tgshare = -1; +static int hf_sna_xid_3_dedsvc = -1; +static int hf_sna_xid_3_12 = -1; +static int hf_sna_xid_3_negcsup = -1; +static int hf_sna_xid_3_negcomp = -1; +static int hf_sna_xid_3_15 = -1; +static int hf_sna_xid_3_partg = -1; +static int hf_sna_xid_3_dlur = -1; +static int hf_sna_xid_3_dlus = -1; +static int hf_sna_xid_3_exbn = -1; +static int hf_sna_xid_3_genodai = -1; +static int hf_sna_xid_3_branch = -1; +static int hf_sna_xid_3_brnn = -1; +static int hf_sna_xid_3_tg = -1; +static int hf_sna_xid_3_dlc = -1; +static int hf_sna_xid_3_dlen = -1; + +static int hf_sna_control_len = -1; +static int hf_sna_control_key = -1; +static int hf_sna_control_hprkey = -1; +static int hf_sna_control_05_delay = -1; +static int hf_sna_control_05_type = -1; +static int hf_sna_control_05_ptp = -1; +static int hf_sna_control_0e_type = -1; +static int hf_sna_control_0e_value = -1; +static int hf_sna_padding = -1; +static int hf_sna_reserved = -1; +static int hf_sna_biu_segment_data = -1; + +static gint ett_sna = -1; +static gint ett_sna_th = -1; +static gint ett_sna_th_fid = -1; +static gint ett_sna_nlp_nhdr = -1; +static gint ett_sna_nlp_nhdr_0 = -1; +static gint ett_sna_nlp_nhdr_1 = -1; +static gint ett_sna_nlp_thdr = -1; +static gint ett_sna_nlp_thdr_8 = -1; +static gint ett_sna_nlp_thdr_9 = -1; +static gint ett_sna_nlp_opti_un = -1; +static gint ett_sna_nlp_opti_0d = -1; +static gint ett_sna_nlp_opti_0d_4 = -1; +static gint ett_sna_nlp_opti_0e = -1; +static gint ett_sna_nlp_opti_0e_stat = -1; +static gint ett_sna_nlp_opti_0e_absp = -1; +static gint ett_sna_nlp_opti_0f = -1; +static gint ett_sna_nlp_opti_10 = -1; +static gint ett_sna_nlp_opti_12 = -1; +static gint ett_sna_nlp_opti_14 = -1; +static gint ett_sna_nlp_opti_14_si = -1; +static gint ett_sna_nlp_opti_14_si_2 = -1; +static gint ett_sna_nlp_opti_14_rr = -1; +static gint ett_sna_nlp_opti_14_rr_2 = -1; +static gint ett_sna_nlp_opti_22 = -1; +static gint ett_sna_nlp_opti_22_2 = -1; +static gint ett_sna_nlp_opti_22_3 = -1; +static gint ett_sna_rh = -1; +static gint ett_sna_rh_0 = -1; +static gint ett_sna_rh_1 = -1; +static gint ett_sna_rh_2 = -1; +static gint ett_sna_gds = -1; +static gint ett_sna_xid_0 = -1; +static gint ett_sna_xid_id = -1; +static gint ett_sna_xid_3_8 = -1; +static gint ett_sna_xid_3_10 = -1; +static gint ett_sna_xid_3_11 = -1; +static gint ett_sna_xid_3_12 = -1; +static gint ett_sna_xid_3_15 = -1; +static gint ett_sna_control_un = -1; +static gint ett_sna_control_05 = -1; +static gint ett_sna_control_05hpr = -1; +static gint ett_sna_control_05hpr_type = -1; +static gint ett_sna_control_0e = -1; + +static dissector_handle_t sna_handle; +static dissector_handle_t sna_xid_handle; + +static int sna_address_type = -1; + +/* Defragment fragmented SNA BIUs*/ +static gboolean sna_defragment = TRUE; +static reassembly_table sna_reassembly_table; + +/* Format Identifier */ +static const value_string sna_th_fid_vals[] = { + { 0x0, "SNA device <--> Non-SNA Device" }, + { 0x1, "Subarea Nodes, without ER or VR" }, + { 0x2, "Subarea Node <--> PU2" }, + { 0x3, "Subarea Node or SNA host <--> Subarea Node" }, + { 0x4, "Subarea Nodes, supporting ER and VR" }, + { 0x5, "HPR RTP endpoint nodes" }, + { 0xa, "HPR NLP Frame Routing" }, + { 0xb, "HPR NLP Frame Routing" }, + { 0xc, "HPR NLP Automatic Network Routing" }, + { 0xd, "HPR NLP Automatic Network Routing" }, + { 0xf, "Adjacent Subarea Nodes, supporting ER and VR" }, + { 0x0, NULL } +}; + +/* Mapping Field */ +#define MPF_MIDDLE_SEGMENT 0 +#define MPF_LAST_SEGMENT 1 +#define MPF_FIRST_SEGMENT 2 +#define MPF_WHOLE_BIU 3 + +static const value_string sna_th_mpf_vals[] = { + { MPF_MIDDLE_SEGMENT, "Middle segment of a BIU" }, + { MPF_LAST_SEGMENT, "Last segment of a BIU" }, + { MPF_FIRST_SEGMENT, "First segment of a BIU" }, + { MPF_WHOLE_BIU, "Whole BIU" }, + { 0, NULL } +}; + +/* Expedited Flow Indicator */ +static const value_string sna_th_efi_vals[] = { + { 0, "Normal Flow" }, + { 1, "Expedited Flow" }, + { 0x0, NULL } +}; + +/* Request/Response Unit Category */ +static const value_string sna_rh_ru_category_vals[] = { + { 0, "Function Management Data (FMD)" }, + { 1, "Network Control (NC)" }, + { 2, "Data Flow Control (DFC)" }, + { 3, "Session Control (SC)" }, + { 0x0, NULL } +}; + +/* Format Indicator */ +static const true_false_string sna_rh_fi_truth = + { "FM Header", "No FM Header" }; + +/* Begin Chain Indicator */ +static const true_false_string sna_rh_bci_truth = + { "First in Chain", "Not First in Chain" }; + +/* End Chain Indicator */ +static const true_false_string sna_rh_eci_truth = + { "Last in Chain", "Not Last in Chain" }; + +/* Lengith-Checked Compression Indicator */ +static const true_false_string sna_rh_lcci_truth = + { "Compressed", "Not Compressed" }; + +/* Response Type Indicator */ +static const true_false_string sna_rh_rti_truth = + { "Negative", "Positive" }; + +/* Queued Response Indicator */ +static const true_false_string sna_rh_qri_truth = + { "Enqueue response in TC queues", "Response bypasses TC queues" }; + +/* Code Selection Indicator */ +static const value_string sna_rh_csi_vals[] = { + { 0, "EBCDIC" }, + { 1, "ASCII" }, + { 0x0, NULL } +}; + +/* TG Sweep */ +static const value_string sna_th_tg_sweep_vals[] = { + { 0, "This PIU may overtake any PU ahead of it." }, + { 1, "This PIU does not overtake any PIU ahead of it." }, + { 0x0, NULL } +}; + +/* ER_VR_SUPP_IND */ +static const value_string sna_th_er_vr_supp_ind_vals[] = { + { 0, "Each node supports ER and VR protocols" }, + { 1, "Includes at least one node that does not support ER and VR" + " protocols" }, + { 0x0, NULL } +}; + +/* VR_PAC_CNT_IND */ +static const value_string sna_th_vr_pac_cnt_ind_vals[] = { + { 0, "Pacing count on the VR has not reached 0" }, + { 1, "Pacing count on the VR has reached 0" }, + { 0x0, NULL } +}; + +/* NTWK_PRTY */ +static const value_string sna_th_ntwk_prty_vals[] = { + { 0, "PIU flows at a lower priority" }, + { 1, "PIU flows at network priority (highest transmission priority)" }, + { 0x0, NULL } +}; + +/* TGSF */ +static const value_string sna_th_tgsf_vals[] = { + { 0, "Not segmented" }, + { 1, "Last segment" }, + { 2, "First segment" }, + { 3, "Middle segment" }, + { 0x0, NULL } +}; + +/* PIUBF */ +static const value_string sna_th_piubf_vals[] = { + { 0, "Single PIU frame" }, + { 1, "Last PIU of a multiple PIU frame" }, + { 2, "First PIU of a multiple PIU frame" }, + { 3, "Middle PIU of a multiple PIU frame" }, + { 0x0, NULL } +}; + +/* NLPOI */ +static const value_string sna_th_nlpoi_vals[] = { + { 0, "NLP starts within this FID4 TH" }, + { 1, "NLP byte 0 starts after RH byte 0 following NLP C/P pad" }, + { 0x0, NULL } +}; + +/* TPF */ +static const value_string sna_th_tpf_vals[] = { + { 0, "Low Priority" }, + { 1, "Medium Priority" }, + { 2, "High Priority" }, + { 3, "Network Priority" }, + { 0x0, NULL } +}; + +/* VR_CWI */ +static const value_string sna_th_vr_cwi_vals[] = { + { 0, "Increment window size" }, + { 1, "Decrement window size" }, + { 0x0, NULL } +}; + +/* TG_NONFIFO_IND */ +static const true_false_string sna_th_tg_nonfifo_ind_truth = + { "TG FIFO is not required", "TG FIFO is required" }; + +/* VR_SQTI */ +static const value_string sna_th_vr_sqti_vals[] = { + { 0, "Non-sequenced, Non-supervisory" }, + { 1, "Non-sequenced, Supervisory" }, + { 2, "Singly-sequenced" }, + { 0x0, NULL } +}; + +/* VRPRQ */ +static const true_false_string sna_th_vrprq_truth = { + "VR pacing request is sent asking for a VR pacing response", + "No VR pacing response is requested", +}; + +/* VRPRS */ +static const true_false_string sna_th_vrprs_truth = { + "VR pacing response is sent in response to a VRPRQ bit set", + "No pacing response sent", +}; + +/* VR_CWRI */ +static const value_string sna_th_vr_cwri_vals[] = { + { 0, "Increment window size by 1" }, + { 1, "Decrement window size by 1" }, + { 0x0, NULL } +}; + +/* VR_RWI */ +static const true_false_string sna_th_vr_rwi_truth = { + "Reset window size to the minimum specified in NC_ACTVR", + "Do not reset window size", +}; + +/* Switching Mode */ +static const value_string sna_nlp_sm_vals[] = { + { 5, "Function routing" }, + { 6, "Automatic network routing" }, + { 0x0, NULL } +}; + +static const true_false_string sna_nlp_tspi_truth = + { "Time sensitive", "Not time sensitive" }; + +static const true_false_string sna_nlp_slowdn1_truth = + { "Minor congestion", "No minor congestion" }; + +static const true_false_string sna_nlp_slowdn2_truth = + { "Major congestion", "No major congestion" }; + +/* Function Type */ +static const value_string sna_nlp_ft_vals[] = { + { 0x10, "LDLC" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_frh_vals[] = { + { 0x03, "XID complete request" }, + { 0x04, "XID complete response" }, + { 0x0, NULL } +}; + +static const true_false_string sna_nlp_setupi_truth = + { "Connection setup segment present", "Connection setup segment not" + " present" }; + +static const true_false_string sna_nlp_somi_truth = + { "Start of message", "Not start of message" }; + +static const true_false_string sna_nlp_eomi_truth = + { "End of message", "Not end of message" }; + +static const true_false_string sna_nlp_sri_truth = + { "Status requested", "No status requested" }; + +static const true_false_string sna_nlp_rasapi_truth = + { "Reply as soon as possible", "No need to reply as soon as possible" }; + +static const true_false_string sna_nlp_retryi_truth = + { "Undefined", "Sender will retransmit" }; + +static const true_false_string sna_nlp_lmi_truth = + { "Last message", "Not last message" }; + +static const true_false_string sna_nlp_cqfi_truth = + { "CQFI included", "CQFI not included" }; + +static const true_false_string sna_nlp_osi_truth = + { "Optional segments present", "No optional segments present" }; + +static const value_string sna_xid_3_state_vals[] = { + { 0x00, "Exchange state indicators not supported" }, + { 0x01, "Negotiation-proceeding exchange" }, + { 0x02, "Prenegotiation exchange" }, + { 0x03, "Nonactivation exchange" }, + { 0x0, NULL } +}; + +static const value_string sna_xid_3_branch_vals[] = { + { 0x00, "Sender does not support branch extender" }, + { 0x01, "TG is branch uplink" }, + { 0x02, "TG is branch downlink" }, + { 0x03, "TG is neither uplink nor downlink" }, + { 0x0, NULL } +}; + +static const value_string sna_xid_type_vals[] = { + { 0x01, "T1 node" }, + { 0x02, "T2.0 or T2.1 node" }, + { 0x03, "Reserved" }, + { 0x04, "T4 or T5 node" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_opti_vals[] = { + { 0x0d, "Connection Setup Segment" }, + { 0x0e, "Status Segment" }, + { 0x0f, "Client Out Of Band Bits Segment" }, + { 0x10, "Connection Identifier Exchange Segment" }, + { 0x12, "Connection Fault Segment" }, + { 0x14, "Switching Information Segment" }, + { 0x22, "Adaptive Rate-Based Segment" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_opti_0d_version_vals[] = { + { 0x0101, "Version 1.1" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_opti_0f_bits_vals[] = { + { 0x0001, "Request Deactivation" }, + { 0x8000, "Reply - OK" }, + { 0x8004, "Reply - Reject" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_opti_22_type_vals[] = { + { 0x00, "Setup" }, + { 0x01, "Rate Reply" }, + { 0x02, "Rate Request" }, + { 0x03, "Rate Request/Rate Reply" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_opti_22_raa_vals[] = { + { 0x00, "Normal" }, + { 0x01, "Restraint" }, + { 0x02, "Slowdown1" }, + { 0x03, "Slowdown2" }, + { 0x04, "Critical" }, + { 0x0, NULL } +}; + +static const value_string sna_nlp_opti_22_arb_vals[] = { + { 0x00, "Base Mode ARB" }, + { 0x01, "Responsive Mode ARB" }, + { 0x0, NULL } +}; + +/* GDS Variable Type */ +static const value_string sna_gds_var_vals[] = { + { 0x1210, "Change Number Of Sessions" }, + { 0x1211, "Exchange Log Name" }, + { 0x1212, "Control Point Management Services Unit" }, + { 0x1213, "Compare States" }, + { 0x1214, "LU Names Position" }, + { 0x1215, "LU Name" }, + { 0x1217, "Do Know" }, + { 0x1218, "Partner Restart" }, + { 0x1219, "Don't Know" }, + { 0x1220, "Sign-Off" }, + { 0x1221, "Sign-On" }, + { 0x1222, "SNMP-over-SNA" }, + { 0x1223, "Node Address Service" }, + { 0x12C1, "CP Capabilities" }, + { 0x12C2, "Topology Database Update" }, + { 0x12C3, "Register Resource" }, + { 0x12C4, "Locate" }, + { 0x12C5, "Cross-Domain Initiate" }, + { 0x12C9, "Delete Resource" }, + { 0x12CA, "Find Resource" }, + { 0x12CB, "Found Resource" }, + { 0x12CC, "Notify" }, + { 0x12CD, "Initiate-Other Cross-Domain" }, + { 0x12CE, "Route Setup" }, + { 0x12E1, "Error Log" }, + { 0x12F1, "Null Data" }, + { 0x12F2, "User Control Date" }, + { 0x12F3, "Map Name" }, + { 0x12F4, "Error Data" }, + { 0x12F6, "Authentication Token Data" }, + { 0x12F8, "Service Flow Authentication Token Data" }, + { 0x12FF, "Application Data" }, + { 0x1310, "MDS Message Unit" }, + { 0x1311, "MDS Routing Information" }, + { 0x1500, "FID2 Encapsulation" }, + { 0x0, NULL } +}; + +/* Control Vector Type */ +static const value_string sna_control_vals[] = { + { 0x00, "SSCP-LU Session Capabilities Control Vector" }, + { 0x01, "Date-Time Control Vector" }, + { 0x02, "Subarea Routing Control Vector" }, + { 0x03, "SDLC Secondary Station Control Vector" }, + { 0x04, "LU Control Vector" }, + { 0x05, "Channel Control Vector" }, + { 0x06, "Cross-Domain Resource Manager (CDRM) Control Vector" }, + { 0x07, "PU FMD-RU-Usage Control Vector" }, + { 0x08, "Intensive Mode Control Vector" }, + { 0x09, "Activation Request / Response Sequence Identifier Control" + " Vector" }, + { 0x0a, "User Request Correlator Control Vector" }, + { 0x0b, "SSCP-PU Session Capabilities Control Vector" }, + { 0x0c, "LU-LU Session Capabilities Control Vector" }, + { 0x0d, "Mode / Class-of-Service / Virtual-Route-Identifier List" + " Control Vector" }, + { 0x0e, "Network Name Control Vector" }, + { 0x0f, "Link Capabilities and Status Control Vector" }, + { 0x10, "Product Set ID Control Vector" }, + { 0x11, "Load Module Correlation Control Vector" }, + { 0x12, "Network Identifier Control Vector" }, + { 0x13, "Gateway Support Capabilities Control Vector" }, + { 0x14, "Session Initiation Control Vector" }, + { 0x15, "Network-Qualified Address Pair Control Vector" }, + { 0x16, "Names Substitution Control Vector" }, + { 0x17, "SSCP Identifier Control Vector" }, + { 0x18, "SSCP Name Control Vector" }, + { 0x19, "Resource Identifier Control Vector" }, + { 0x1a, "NAU Address Control Vector" }, + { 0x1b, "VRID List Control Vector" }, + { 0x1c, "Network-Qualified Name Pair Control Vector" }, + { 0x1e, "VR-ER Mapping Data Control Vector" }, + { 0x1f, "ER Configuration Control Vector" }, + { 0x23, "Local-Form Session Identifier Control Vector" }, + { 0x24, "IPL Load Module Request Control Vector" }, + { 0x25, "Security ID Control Control Vector" }, + { 0x26, "Network Connection Endpoint Identifier Control Vector" }, + { 0x27, "XRF Session Activation Control Vector" }, + { 0x28, "Related Session Identifier Control Vector" }, + { 0x29, "Session State Data Control Vector" }, + { 0x2a, "Session Information Control Vector" }, + { 0x2b, "Route Selection Control Vector" }, + { 0x2c, "COS/TPF Control Vector" }, + { 0x2d, "Mode Control Vector" }, + { 0x2f, "LU Definition Control Vector" }, + { 0x30, "Assign LU Characteristics Control Vector" }, + { 0x31, "BIND Image Control Vector" }, + { 0x32, "Short-Hold Mode Control Vector" }, + { 0x33, "ENCP Search Control Control Vector" }, + { 0x34, "LU Definition Override Control Vector" }, + { 0x35, "Extended Sense Data Control Vector" }, + { 0x36, "Directory Error Control Vector" }, + { 0x37, "Directory Entry Correlator Control Vector" }, + { 0x38, "Short-Hold Mode Emulation Control Vector" }, + { 0x39, "Network Connection Endpoint (NCE) Instance Identifier" + " Control Vector" }, + { 0x3a, "Route Status Data Control Vector" }, + { 0x3b, "VR Congestion Data Control Vector" }, + { 0x3c, "Associated Resource Entry Control Vector" }, + { 0x3d, "Directory Entry Control Vector" }, + { 0x3e, "Directory Entry Characteristic Control Vector" }, + { 0x3f, "SSCP (SLU) Capabilities Control Vector" }, + { 0x40, "Real Associated Resource Control Vector" }, + { 0x41, "Station Parameters Control Vector" }, + { 0x42, "Dynamic Path Update Data Control Vector" }, + { 0x43, "Extended SDLC Station Control Vector" }, + { 0x44, "Node Descriptor Control Vector" }, + { 0x45, "Node Characteristics Control Vector" }, + { 0x46, "TG Descriptor Control Vector" }, + { 0x47, "TG Characteristics Control Vector" }, + { 0x48, "Topology Resource Descriptor Control Vector" }, + { 0x49, "Multinode Persistent Sessions (MNPS) LU Names Control" + " Vector" }, + { 0x4a, "Real Owning Control Point Control Vector" }, + { 0x4b, "RTP Transport Connection Identifier Control Vector" }, + { 0x51, "DLUR/S Capabilities Control Vector" }, + { 0x52, "Primary Send Pacing Window Size Control Vector" }, + { 0x56, "Call Security Verification Control Vector" }, + { 0x57, "DLC Connection Data Control Vector" }, + { 0x59, "Installation-Defined CDINIT Data Control Vector" }, + { 0x5a, "Session Services Extension Support Control Vector" }, + { 0x5b, "Interchange Node Support Control Vector" }, + { 0x5c, "APPN Message Transport Control Vector" }, + { 0x5d, "Subarea Message Transport Control Vector" }, + { 0x5e, "Related Request Control Vector" }, + { 0x5f, "Extended Fully Qualified PCID Control Vector" }, + { 0x60, "Fully Qualified PCID Control Vector" }, + { 0x61, "HPR Capabilities Control Vector" }, + { 0x62, "Session Address Control Vector" }, + { 0x63, "Cryptographic Key Distribution Control Vector" }, + { 0x64, "TCP/IP Information Control Vector" }, + { 0x65, "Device Characteristics Control Vector" }, + { 0x66, "Length-Checked Compression Control Vector" }, + { 0x67, "Automatic Network Routing (ANR) Path Control Vector" }, + { 0x68, "XRF/Session Cryptography Control Vector" }, + { 0x69, "Switched Parameters Control Vector" }, + { 0x6a, "ER Congestion Data Control Vector" }, + { 0x71, "Triple DES Cryptography Key Continuation Control Vector" }, + { 0xfe, "Control Vector Keys Not Recognized" }, + { 0x0, NULL } +}; + +static const value_string sna_control_hpr_vals[] = { + { 0x00, "Node Identifier Control Vector" }, + { 0x03, "Network ID Control Vector" }, + { 0x05, "Network Address Control Vector" }, + { 0x0, NULL } +}; + +static const value_string sna_control_0e_type_vals[] = { + { 0xF1, "PU Name" }, + { 0xF3, "LU Name" }, + { 0xF4, "CP Name" }, + { 0xF5, "SSCP Name" }, + { 0xF6, "NNCP Name" }, + { 0xF7, "Link Station Name" }, + { 0xF8, "CP Name of CP(PLU)" }, + { 0xF9, "CP Name of CP(SLU)" }, + { 0xFA, "Generic Name" }, + { 0x0, NULL } +}; + +/* Values to direct the top-most dissector what to dissect + * after the TH. */ +enum next_dissection_enum { + stop_here, + rh_only, + everything +}; + +enum parse { + LT, + KL +}; + +/* + * Structure used to represent an FID Type 4 address; gives the layout of the + * data pointed to by an AT_SNA "address" structure if the size is + * SNA_FID_TYPE_4_ADDR_LEN. + */ +#define SNA_FID_TYPE_4_ADDR_LEN 6 +struct sna_fid_type_4_addr { + guint32 saf; + guint16 ef; +}; + +typedef enum next_dissection_enum next_dissection_t; + +static void dissect_xid (tvbuff_t*, packet_info*, proto_tree*, proto_tree*); +static void dissect_fid (tvbuff_t*, packet_info*, proto_tree*, proto_tree*); +static void dissect_nlp (tvbuff_t*, packet_info*, proto_tree*, proto_tree*); +static void dissect_gds (tvbuff_t*, packet_info*, proto_tree*, proto_tree*); +static void dissect_rh (tvbuff_t*, int, proto_tree*); +static void dissect_sna_control(tvbuff_t* parent_tvb, int offset, int control_len, proto_tree* tree, int hpr, enum parse parse); + +static int sna_fid_to_str_buf(const address *addr, gchar *buf, int buf_len _U_) +{ + const guint8 *addrdata; + struct sna_fid_type_4_addr sna_fid_type_4_addr; + gchar *bufp = buf; + + switch (addr->len) { + + case 1: + addrdata = (const guint8 *)addr->data; + word_to_hex(buf, addrdata[0]); + buf[4] = '\0'; + break; + + case 2: + addrdata = (const guint8 *)addr->data; + word_to_hex(buf, pntoh16(&addrdata[0])); + buf[4] = '\0'; + break; + + case SNA_FID_TYPE_4_ADDR_LEN: + /* FID Type 4 */ + memcpy(&sna_fid_type_4_addr, addr->data, SNA_FID_TYPE_4_ADDR_LEN); + + bufp = dword_to_hex(bufp, sna_fid_type_4_addr.saf); + *bufp++ = '.'; + bufp = word_to_hex(bufp, sna_fid_type_4_addr.ef); + *bufp++ = '\0'; /* NULL terminate */ + break; + default: + buf[0] = '\0'; + return 1; + } + + return (int)strlen(buf)+1; +} + + +static int sna_address_str_len(const address* addr _U_) +{ + /* We could do this based on address length, but 14 bytes isn't THAT much space */ + return 14; +} + + +/* -------------------------------------------------------------------- + * Chapter 2 High-Performance Routing (HPR) Headers + * -------------------------------------------------------------------- + */ + +static void +dissect_optional_0d(tvbuff_t *tvb, proto_tree *tree) +{ + int offset, len, pad; + static int * const fields[] = { + &hf_sna_nlp_opti_0d_target, + &hf_sna_nlp_opti_0d_arb, + &hf_sna_nlp_opti_0d_reliable, + &hf_sna_nlp_opti_0d_dedicated, + NULL + }; + + if (!tree) + return; + + proto_tree_add_item(tree, hf_sna_nlp_opti_0d_version, tvb, 2, 2, ENC_BIG_ENDIAN); + + proto_tree_add_bitmask(tree, tvb, 4, hf_sna_nlp_opti_0d_4, + ett_sna_nlp_opti_0d_4, fields, ENC_NA); + + proto_tree_add_item(tree, hf_sna_reserved, tvb, 5, 3, ENC_NA); + + offset = 8; + + while (tvb_offset_exists(tvb, offset)) { + len = tvb_get_guint8(tvb, offset+0); + if (len) { + dissect_sna_control(tvb, offset, len, tree, 1, LT); + pad = (len+3) & 0xfffc; + if (pad > len) + proto_tree_add_item(tree, hf_sna_padding, tvb, offset+len, pad-len, ENC_NA); + offset += pad; + } else { + /* Avoid endless loop */ + return; + } + } +} + +static void +dissect_optional_0e(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int bits, offset; + static int * const fields[] = { + &hf_sna_nlp_opti_0e_gap, + &hf_sna_nlp_opti_0e_idle, + NULL + }; + + bits = tvb_get_guint8(tvb, 2); + offset = 20; + + proto_tree_add_bitmask(tree, tvb, 2, hf_sna_nlp_opti_0e_stat, + ett_sna_nlp_opti_0e_stat, fields, ENC_NA); + + proto_tree_add_item(tree, hf_sna_nlp_opti_0e_nabsp, + tvb, 3, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_nlp_opti_0e_sync, + tvb, 4, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_nlp_opti_0e_echo, + tvb, 6, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_nlp_opti_0e_rseq, + tvb, 8, 4, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_reserved, tvb, 12, 8, ENC_NA); + + if (tvb_offset_exists(tvb, offset)) + call_data_dissector(tvb_new_subset_remaining(tvb, 4), pinfo, tree); + + if (bits & 0x40) { + col_set_str(pinfo->cinfo, COL_INFO, "HPR Idle Message"); + } else { + col_set_str(pinfo->cinfo, COL_INFO, "HPR Status Message"); + } +} + +static void +dissect_optional_0f(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree_add_item(tree, hf_sna_nlp_opti_0f_bits, tvb, 2, 2, ENC_BIG_ENDIAN); + if (tvb_offset_exists(tvb, 4)) + call_data_dissector(tvb_new_subset_remaining(tvb, 4), pinfo, tree); +} + +static void +dissect_optional_10(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree_add_item(tree, hf_sna_reserved, tvb, 2, 2, ENC_NA); + proto_tree_add_item(tree, hf_sna_nlp_opti_10_tcid, tvb, 4, 8, ENC_NA); + if (tvb_offset_exists(tvb, 12)) + call_data_dissector(tvb_new_subset_remaining(tvb, 12), pinfo, tree); +} + +static void +dissect_optional_12(tvbuff_t *tvb, proto_tree *tree) +{ + proto_tree_add_item(tree, hf_sna_reserved, tvb, 2, 2, ENC_NA); + proto_tree_add_item(tree, hf_sna_nlp_opti_12_sense, tvb, 4, -1, ENC_NA); +} + +static void +dissect_optional_14(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *sub_tree; + int len, pad, type, offset, num, sublen; + static int * const opti_14_si_fields[] = { + &hf_sna_nlp_opti_14_si_refifo, + &hf_sna_nlp_opti_14_si_mobility, + &hf_sna_nlp_opti_14_si_dirsearch, + &hf_sna_nlp_opti_14_si_limitres, + &hf_sna_nlp_opti_14_si_ncescope, + &hf_sna_nlp_opti_14_si_mnpsrscv, + NULL + }; + static int * const opti_14_rr_fields[] = { + &hf_sna_nlp_opti_14_rr_bfe, + NULL + }; + + proto_tree_add_item(tree, hf_sna_reserved, tvb, 2, 2, ENC_NA); + + offset = 4; + + len = tvb_get_guint8(tvb, offset); + type = tvb_get_guint8(tvb, offset+1); + + if ((type != 0x83) || (len <= 16)) { + /* Invalid */ + call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, tree); + return; + } + sub_tree = proto_tree_add_subtree(tree, tvb, offset, len, + ett_sna_nlp_opti_14_si, NULL, "Switching Information Control Vector"); + + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_si_len, + tvb, offset, 1, len); + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_si_key, + tvb, offset+1, 1, type); + + proto_tree_add_bitmask(tree, tvb, offset+2, hf_sna_nlp_opti_14_si_2, + ett_sna_nlp_opti_14_si_2, opti_14_si_fields, ENC_NA); + + proto_tree_add_item(sub_tree, hf_sna_reserved, tvb, offset+3, 1, ENC_NA); + proto_tree_add_item(sub_tree, hf_sna_nlp_opti_14_si_maxpsize, + tvb, offset+4, 4, ENC_BIG_ENDIAN); + proto_tree_add_item(sub_tree, hf_sna_nlp_opti_14_si_switch, + tvb, offset+8, 4, ENC_BIG_ENDIAN); + proto_tree_add_item(sub_tree, hf_sna_nlp_opti_14_si_alive, + tvb, offset+12, 4, ENC_BIG_ENDIAN); + + dissect_sna_control(tvb, offset+16, len-16, sub_tree, 1, LT); + + pad = (len+3) & 0xfffc; + if (pad > len) + proto_tree_add_item(sub_tree, hf_sna_padding, tvb, offset+len, pad-len, ENC_NA); + offset += pad; + + len = tvb_get_guint8(tvb, offset); + type = tvb_get_guint8(tvb, offset+1); + + if ((type != 0x85) || ( len < 4)) { + /* Invalid */ + call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, tree); + return; + } + sub_tree = proto_tree_add_subtree(tree, tvb, offset, len, + ett_sna_nlp_opti_14_rr, NULL, "Return Route TG Descriptor Control Vector"); + + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_len, + tvb, offset, 1, len); + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_key, + tvb, offset+1, 1, type); + + proto_tree_add_bitmask(tree, tvb, offset+2, hf_sna_nlp_opti_14_rr_2, + ett_sna_nlp_opti_14_rr_2, opti_14_rr_fields, ENC_NA); + + num = tvb_get_guint8(tvb, offset+3); + + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_num, + tvb, offset+3, 1, num); + + offset += 4; + + while (num) { + sublen = tvb_get_guint8(tvb, offset); + if (sublen) { + dissect_sna_control(tvb, offset, sublen, sub_tree, 1, LT); + } else { + /* Invalid */ + call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, tree); + return; + } + /* No padding here */ + offset += sublen; + num--; + } +} + +static void +dissect_optional_22(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int bits, type; + static int * const opti_22_2_fields[] = { + &hf_sna_nlp_opti_22_type, + &hf_sna_nlp_opti_22_raa, + &hf_sna_nlp_opti_22_parity, + &hf_sna_nlp_opti_22_arb, + NULL + }; + static int * const opti_22_3_fields[] = { + &hf_sna_nlp_opti_22_ratereq, + &hf_sna_nlp_opti_22_raterep, + NULL + }; + + bits = tvb_get_guint8(tvb, 2); + type = (bits & 0xc0) >> 6; + + proto_tree_add_bitmask(tree, tvb, 2, hf_sna_nlp_opti_22_2, + ett_sna_nlp_opti_22_2, opti_22_2_fields, ENC_NA); + + proto_tree_add_bitmask(tree, tvb, 3, hf_sna_nlp_opti_22_3, + ett_sna_nlp_opti_22_3, opti_22_3_fields, ENC_NA); + + proto_tree_add_item(tree, hf_sna_nlp_opti_22_field1, + tvb, 4, 4, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_nlp_opti_22_field2, + tvb, 8, 4, ENC_BIG_ENDIAN); + + if (type == 0) { + proto_tree_add_item(tree, hf_sna_nlp_opti_22_field3, + tvb, 12, 4, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_nlp_opti_22_field4, + tvb, 16, 4, ENC_BIG_ENDIAN); + + if (tvb_offset_exists(tvb, 20)) + call_data_dissector(tvb_new_subset_remaining(tvb, 20), pinfo, tree); + } else { + if (tvb_offset_exists(tvb, 12)) + call_data_dissector(tvb_new_subset_remaining(tvb, 12), pinfo, tree); + } +} + +static void +dissect_optional(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *sub_tree; + int offset, type, len; + gint ett; + + sub_tree = NULL; + + offset = 0; + + while (tvb_offset_exists(tvb, offset)) { + len = tvb_get_guint8(tvb, offset); + type = tvb_get_guint8(tvb, offset+1); + + /* Prevent loop for invalid crap in packet */ + if (len == 0) { + call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, tree); + return; + } + + ett = ett_sna_nlp_opti_un; + if(type == 0x0d) ett = ett_sna_nlp_opti_0d; + if(type == 0x0e) ett = ett_sna_nlp_opti_0e; + if(type == 0x0f) ett = ett_sna_nlp_opti_0f; + if(type == 0x10) ett = ett_sna_nlp_opti_10; + if(type == 0x12) ett = ett_sna_nlp_opti_12; + if(type == 0x14) ett = ett_sna_nlp_opti_14; + if(type == 0x22) ett = ett_sna_nlp_opti_22; + if (tree) { + sub_tree = proto_tree_add_subtree(tree, tvb, + offset, len << 2, ett, NULL, + val_to_str_const(type, sna_nlp_opti_vals, "Unknown Segment Type")); + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_len, + tvb, offset, 1, len); + proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_type, + tvb, offset+1, 1, type); + } + switch(type) { + case 0x0d: + dissect_optional_0d(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), sub_tree); + break; + case 0x0e: + dissect_optional_0e(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), pinfo, sub_tree); + break; + case 0x0f: + dissect_optional_0f(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), pinfo, sub_tree); + break; + case 0x10: + dissect_optional_10(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), pinfo, sub_tree); + break; + case 0x12: + dissect_optional_12(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), sub_tree); + break; + case 0x14: + dissect_optional_14(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), pinfo, sub_tree); + break; + case 0x22: + dissect_optional_22(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), pinfo, sub_tree); + break; + default: + call_data_dissector(tvb_new_subset_length_caplen(tvb, offset, + len << 2, -1), pinfo, sub_tree); + } + offset += (len << 2); + } +} + +static void +dissect_nlp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + proto_tree *parent_tree) +{ + proto_tree *nlp_tree; + proto_item *nlp_item; + guint8 nhdr_0, nhdr_1, nhdr_x, thdr_8, thdr_9, fid; + guint32 thdr_len, thdr_dlf; + guint16 subindx; + static int * const nlp_nhdr_0_fields[] = { + &hf_sna_nlp_sm, + &hf_sna_nlp_tpf, + NULL + }; + static int * const nlp_nhdr_1_fields[] = { + &hf_sna_nlp_ft, + &hf_sna_nlp_tspi, + &hf_sna_nlp_slowdn1, + &hf_sna_nlp_slowdn2, + NULL + }; + static int * const nlp_nhdr_8_fields[] = { + &hf_sna_nlp_setupi, + &hf_sna_nlp_somi, + &hf_sna_nlp_eomi, + &hf_sna_nlp_sri, + &hf_sna_nlp_rasapi, + &hf_sna_nlp_retryi, + NULL + }; + static int * const nlp_nhdr_9_fields[] = { + &hf_sna_nlp_lmi, + &hf_sna_nlp_cqfi, + &hf_sna_nlp_osi, + NULL + }; + + int indx = 0, counter = 0; + + nlp_tree = NULL; + nlp_item = NULL; + + nhdr_0 = tvb_get_guint8(tvb, indx); + nhdr_1 = tvb_get_guint8(tvb, indx+1); + + col_set_str(pinfo->cinfo, COL_INFO, "HPR NLP Packet"); + + if (tree) { + /* Don't bother setting length. We'll set it later after we + * find the lengths of NHDR */ + nlp_item = proto_tree_add_item(tree, hf_sna_nlp_nhdr, tvb, + indx, -1, ENC_NA); + nlp_tree = proto_item_add_subtree(nlp_item, ett_sna_nlp_nhdr); + + proto_tree_add_bitmask(nlp_tree, tvb, indx, hf_sna_nlp_nhdr_0, + ett_sna_nlp_nhdr_0, nlp_nhdr_0_fields, ENC_NA); + + proto_tree_add_bitmask(nlp_tree, tvb, indx+1, hf_sna_nlp_nhdr_1, + ett_sna_nlp_nhdr_1, nlp_nhdr_1_fields, ENC_NA); + } + /* ANR or FR lists */ + + indx += 2; + counter = 0; + + if ((nhdr_0 & 0xe0) == 0xa0) { + do { + nhdr_x = tvb_get_guint8(tvb, indx + counter); + counter ++; + } while (nhdr_x != 0xff); + proto_tree_add_item(nlp_tree, + hf_sna_nlp_fra, tvb, indx, counter, ENC_NA); + indx += counter; + proto_tree_add_item(nlp_tree, hf_sna_reserved, tvb, indx, 1, ENC_NA); + indx++; + + if (tree) + proto_item_set_len(nlp_item, indx); + + if ((nhdr_1 & 0xf0) == 0x10) { + proto_tree_add_item(tree, hf_sna_nlp_frh, + tvb, indx, 1, ENC_BIG_ENDIAN); + indx ++; + + if (tvb_offset_exists(tvb, indx)) + call_data_dissector(tvb_new_subset_remaining(tvb, indx), + pinfo, parent_tree); + return; + } + } + if ((nhdr_0 & 0xe0) == 0xc0) { + do { + nhdr_x = tvb_get_guint8(tvb, indx + counter); + counter ++; + } while (nhdr_x != 0xff); + proto_tree_add_item(nlp_tree, hf_sna_nlp_anr, + tvb, indx, counter, ENC_NA); + indx += counter; + + proto_tree_add_item(nlp_tree, hf_sna_reserved, tvb, indx, 1, ENC_NA); + indx++; + + if (tree) + proto_item_set_len(nlp_item, indx); + } + + thdr_8 = tvb_get_guint8(tvb, indx+8); + thdr_9 = tvb_get_guint8(tvb, indx+9); + thdr_len = tvb_get_ntohs(tvb, indx+10); + thdr_dlf = tvb_get_ntohl(tvb, indx+12); + + if (tree) { + nlp_item = proto_tree_add_item(tree, hf_sna_nlp_thdr, tvb, + indx, thdr_len << 2, ENC_NA); + nlp_tree = proto_item_add_subtree(nlp_item, ett_sna_nlp_thdr); + + proto_tree_add_item(nlp_tree, hf_sna_nlp_tcid, tvb, + indx, 8, ENC_NA); + + proto_tree_add_bitmask(nlp_tree, tvb, indx+8, hf_sna_nlp_thdr_8, + ett_sna_nlp_thdr_8, nlp_nhdr_8_fields, ENC_NA); + + proto_tree_add_bitmask(nlp_tree, tvb, indx+9, hf_sna_nlp_thdr_9, + ett_sna_nlp_thdr_9, nlp_nhdr_9_fields, ENC_NA); + + proto_tree_add_uint(nlp_tree, hf_sna_nlp_offset, tvb, indx+10, + 2, thdr_len); + proto_tree_add_uint(nlp_tree, hf_sna_nlp_dlf, tvb, indx+12, + 4, thdr_dlf); + proto_tree_add_item(nlp_tree, hf_sna_nlp_bsn, tvb, indx+16, + 4, ENC_BIG_ENDIAN); + } + subindx = 20; + + if (((thdr_9 & 0x18) == 0x08) && ((thdr_len << 2) > subindx)) { + counter = tvb_get_guint8(tvb, indx + subindx); + if (tvb_get_guint8(tvb, indx+subindx+1) == 5) + dissect_sna_control(tvb, indx + subindx, counter+2, nlp_tree, 1, LT); + else + call_data_dissector(tvb_new_subset_length_caplen(tvb, indx + subindx, counter+2, + -1), pinfo, nlp_tree); + + subindx += (counter+2); + } + if ((thdr_9 & 0x04) && ((thdr_len << 2) > subindx)) + dissect_optional( + tvb_new_subset_length_caplen(tvb, indx + subindx, + (thdr_len << 2) - subindx, -1), + pinfo, nlp_tree); + + indx += (thdr_len << 2); + if (((thdr_8 & 0x20) == 0) && thdr_dlf) { + col_set_str(pinfo->cinfo, COL_INFO, "HPR Fragment"); + if (tvb_offset_exists(tvb, indx)) { + call_data_dissector(tvb_new_subset_remaining(tvb, indx), pinfo, + parent_tree); + } + return; + } + if (tvb_offset_exists(tvb, indx)) { + /* Transmission Header Format Identifier */ + fid = hi_nibble(tvb_get_guint8(tvb, indx)); + if (fid == 5) /* Only FID5 allowed for HPR */ + dissect_fid(tvb_new_subset_remaining(tvb, indx), pinfo, + tree, parent_tree); + else { + if (tvb_get_ntohs(tvb, indx+2) == 0x12ce) { + /* Route Setup */ + col_set_str(pinfo->cinfo, COL_INFO, "HPR Route Setup"); + dissect_gds(tvb_new_subset_remaining(tvb, indx), + pinfo, tree, parent_tree); + } else + call_data_dissector(tvb_new_subset_remaining(tvb, indx), + pinfo, parent_tree); + } + } +} + +/* -------------------------------------------------------------------- + * Chapter 3 Exchange Identification (XID) Information Fields + * -------------------------------------------------------------------- + */ + +static void +dissect_xid1(tvbuff_t *tvb, proto_tree *tree) +{ + proto_tree_add_item(tree, hf_sna_reserved, tvb, 0, 2, ENC_NA); + +} + +static void +dissect_xid2(tvbuff_t *tvb, proto_tree *tree) +{ + guint dlen, offset; + + if (!tree) + return; + + dlen = tvb_get_guint8(tvb, 0); + + offset = dlen; + + while (tvb_offset_exists(tvb, offset)) { + dlen = tvb_get_guint8(tvb, offset+1); + dissect_sna_control(tvb, offset, dlen+2, tree, 0, KL); + offset += (dlen + 2); + } +} + +static void +dissect_xid3(tvbuff_t *tvb, proto_tree *tree) +{ + guint dlen, offset; + static int * const sna_xid_3_fields[] = { + &hf_sna_xid_3_init_self, + &hf_sna_xid_3_stand_bind, + &hf_sna_xid_3_gener_bind, + &hf_sna_xid_3_recve_bind, + &hf_sna_xid_3_actpu, + &hf_sna_xid_3_nwnode, + &hf_sna_xid_3_cp, + &hf_sna_xid_3_cpcp, + &hf_sna_xid_3_state, + &hf_sna_xid_3_nonact, + &hf_sna_xid_3_cpchange, + NULL + }; + static int * const sna_xid_10_fields[] = { + &hf_sna_xid_3_asend_bind, + &hf_sna_xid_3_arecv_bind, + &hf_sna_xid_3_quiesce, + &hf_sna_xid_3_pucap, + &hf_sna_xid_3_pbn, + &hf_sna_xid_3_pacing, + NULL + }; + static int * const sna_xid_11_fields[] = { + &hf_sna_xid_3_tgshare, + &hf_sna_xid_3_dedsvc, + NULL + }; + static int * const sna_xid_12_fields[] = { + &hf_sna_xid_3_negcsup, + &hf_sna_xid_3_negcomp, + NULL + }; + static int * const sna_xid_15_fields[] = { + &hf_sna_xid_3_partg, + &hf_sna_xid_3_dlur, + &hf_sna_xid_3_dlus, + &hf_sna_xid_3_exbn, + &hf_sna_xid_3_genodai, + &hf_sna_xid_3_branch, + &hf_sna_xid_3_brnn, + NULL + }; + + if (!tree) + return; + + proto_tree_add_item(tree, hf_sna_reserved, tvb, 0, 2, ENC_NA); + + proto_tree_add_bitmask(tree, tvb, 2, hf_sna_xid_3_8, + ett_sna_xid_3_8, sna_xid_3_fields, ENC_BIG_ENDIAN); + + proto_tree_add_bitmask(tree, tvb, 4, hf_sna_xid_3_10, + ett_sna_xid_3_10, sna_xid_10_fields, ENC_BIG_ENDIAN); + + proto_tree_add_bitmask(tree, tvb, 5, hf_sna_xid_3_11, + ett_sna_xid_3_11, sna_xid_11_fields, ENC_BIG_ENDIAN); + + proto_tree_add_bitmask(tree, tvb, 6, hf_sna_xid_3_12, + ett_sna_xid_3_12, sna_xid_12_fields, ENC_BIG_ENDIAN); + + proto_tree_add_item(tree, hf_sna_reserved, tvb, 7, 2, ENC_NA); + + proto_tree_add_bitmask(tree, tvb, 9, hf_sna_xid_3_15, + ett_sna_xid_3_15, sna_xid_15_fields, ENC_BIG_ENDIAN); + + proto_tree_add_item(tree, hf_sna_xid_3_tg, tvb, 10, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_xid_3_dlc, tvb, 11, 1, ENC_BIG_ENDIAN); + + dlen = tvb_get_guint8(tvb, 12); + + proto_tree_add_uint(tree, hf_sna_xid_3_dlen, tvb, 12, 1, dlen); + + /* FIXME: DLC Dependent Data Go Here */ + + offset = 12 + dlen; + + while (tvb_offset_exists(tvb, offset)) { + dlen = tvb_get_guint8(tvb, offset+1); + dissect_sna_control(tvb, offset, dlen+2, tree, 0, KL); + offset += (dlen+2); + } +} + +static void +dissect_xid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + proto_tree *parent_tree) +{ + proto_tree *sub_tree; + proto_item *sub_ti = NULL; + int format, type, len; + guint32 id; + + len = tvb_get_guint8(tvb, 1); + type = tvb_get_guint8(tvb, 0); + id = tvb_get_ntohl(tvb, 2); + format = hi_nibble(type); + + /* Summary information */ + col_add_fstr(pinfo->cinfo, COL_INFO, + "SNA XID Format:%d Type:%s", format, + val_to_str_const(lo_nibble(type), sna_xid_type_vals, + "Unknown Type")); + + if (tree) { + sub_ti = proto_tree_add_item(tree, hf_sna_xid_0, tvb, + 0, 1, ENC_BIG_ENDIAN); + sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_0); + + proto_tree_add_uint(sub_tree, hf_sna_xid_format, tvb, 0, 1, + type); + proto_tree_add_uint(sub_tree, hf_sna_xid_type, tvb, 0, 1, + type); + + proto_tree_add_uint(tree, hf_sna_xid_len, tvb, 1, 1, len); + + sub_ti = proto_tree_add_item(tree, hf_sna_xid_id, tvb, + 2, 4, ENC_BIG_ENDIAN); + sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_id); + + proto_tree_add_uint(sub_tree, hf_sna_xid_idblock, tvb, 2, 4, + id); + proto_tree_add_uint(sub_tree, hf_sna_xid_idnum, tvb, 2, 4, + id); + + switch(format) { + case 0: + break; + case 1: + dissect_xid1(tvb_new_subset_length_caplen(tvb, 6, len-6, -1), + tree); + break; + case 2: + dissect_xid2(tvb_new_subset_length_caplen(tvb, 6, len-6, -1), + tree); + break; + case 3: + dissect_xid3(tvb_new_subset_length_caplen(tvb, 6, len-6, -1), + tree); + break; + default: + /* external standards organizations */ + call_data_dissector(tvb_new_subset_length_caplen(tvb, 6, len-6, -1), + pinfo, tree); + } + } + + if (format == 0) + len = 6; + + if (tvb_offset_exists(tvb, len)) + call_data_dissector(tvb_new_subset_remaining(tvb, len), pinfo, parent_tree); +} + +/* -------------------------------------------------------------------- + * Chapter 4 Transmission Headers (THs) + * -------------------------------------------------------------------- + */ + +#define RH_LEN 3 + +static unsigned int +mpf_value(guint8 th_byte) +{ + return (th_byte & 0x0c) >> 2; +} + +#define FIRST_FRAG_NUMBER 0 +#define MIDDLE_FRAG_NUMBER 1 +#define LAST_FRAG_NUMBER 2 + +/* FID2 is defragged by sequence. The weird thing is that we have neither + * absolute sequence numbers, nor byte offets. Other FIDs have byte offsets + * (the DCF field), but not FID2. The only thing we have to go with is "FIRST", + * "MIDDLE", or "LAST". If the BIU is split into 3 frames, then everything is + * fine, * "FIRST", "MIDDLE", and "LAST" map nicely onto frag-number 0, 1, + * and 2. However, if the BIU is split into 2 frames, then we only have + * "FIRST" and "LAST", and the mapping *should* be frag-number 0 and 1, + * *NOT* 0 and 2. + * + * The SNA docs say "FID2 PIUs cannot be blocked because there is no DCF in the + * TH format for deblocking" (note on Figure 4-2 in the IBM SNA documention, + * see the FTP URL in the comment near the top of this file). I *think* + * this means that the fragmented frames cannot arrive out of order. + * Well, I *want* it to mean this, because w/o this limitation, if you + * get a "FIRST" frame and a "LAST" frame, how long should you wait to + * see if a "MIDDLE" frame every arrives????? Thus, if frames *have* to + * arrive in order, then we're saved. + * + * The problem then boils down to figuring out if "LAST" means frag-number 1 + * (in the case of a BIU split into 2 frames) or frag-number 2 + * (in the case of a BIU split into 3 frames). + * + * Assuming fragmented FID2 BIU frames *do* arrive in order, the obvious + * way to handle the mapping of "LAST" to either frag-number 1 or + * frag-number 2 is to keep a hash which tracks the frames seen, etc. + * This consumes resources. A trickier way, but a way which works, is to + * always map the "LAST" BIU segment to frag-number 2. Here's the trickery: + * if we add frag-number 2, which we know to be the "LAST" BIU segment, + * and the reassembly code tells us that the BIU is still not reassmebled, + * then, owing to the, ahem, /fact/, that fragmented BIU segments arrive + * in order :), we know that 1) "FIRST" did come, and 2) there's no "MIDDLE", + * because this BIU was fragmented into 2 frames, not 3. So, we'll be + * tricky and add a zero-length "MIDDLE" BIU frame (i.e, frag-number 1) + * to complete the reassembly. + */ +static tvbuff_t* +defragment_by_sequence(packet_info *pinfo, tvbuff_t *tvb, int offset, int mpf, + int id) +{ + fragment_head *fd_head; + int frag_number = -1; + int more_frags = TRUE; + tvbuff_t *rh_tvb = NULL; + gint frag_len; + + /* Determine frag_number and more_frags */ + switch(mpf) { + case MPF_WHOLE_BIU: + /* nothing */ + break; + case MPF_FIRST_SEGMENT: + frag_number = FIRST_FRAG_NUMBER; + break; + case MPF_MIDDLE_SEGMENT: + frag_number = MIDDLE_FRAG_NUMBER; + break; + case MPF_LAST_SEGMENT: + frag_number = LAST_FRAG_NUMBER; + more_frags = FALSE; + break; + default: + DISSECTOR_ASSERT_NOT_REACHED(); + } + + /* If sna_defragment is on, and this is a fragment.. */ + if (frag_number > -1) { + /* XXX - check length ??? */ + frag_len = tvb_reported_length_remaining(tvb, offset); + if (tvb_bytes_exist(tvb, offset, frag_len)) { + fd_head = fragment_add_seq(&sna_reassembly_table, + tvb, offset, pinfo, id, NULL, + frag_number, frag_len, more_frags, 0); + + /* We added the LAST segment and reassembly didn't + * complete. Insert a zero-length MIDDLE segment to + * turn a 2-frame BIU-fragmentation into a 3-frame + * BIU-fragmentation (empty middle frag). + * See above long comment about this trickery. */ + + if (mpf == MPF_LAST_SEGMENT && !fd_head) { + fd_head = fragment_add_seq(&sna_reassembly_table, + tvb, offset, pinfo, id, NULL, + MIDDLE_FRAG_NUMBER, 0, TRUE, 0); + } + + if (fd_head != NULL) { + /* We have the complete reassembled payload. */ + rh_tvb = tvb_new_chain(tvb, fd_head->tvb_data); + + /* Add the defragmented data to the data + * source list. */ + add_new_data_source(pinfo, rh_tvb, + "Reassembled SNA BIU"); + } + } + } + return rh_tvb; +} + +#define SNA_FID01_ADDR_LEN 2 + +/* FID Types 0 and 1 */ +static int +dissect_fid0_1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *bf_tree; + proto_item *bf_item; + guint8 th_0; + + const int bytes_in_header = 10; + + if (tree) { + /* Byte 0 */ + th_0 = tvb_get_guint8(tvb, 0); + bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, + th_0); + bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid); + + proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0); + proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0); + proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0); + + /* Byte 1 */ + proto_tree_add_item(tree, hf_sna_reserved, tvb, 1, 1, ENC_NA); + + /* Bytes 2-3 */ + proto_tree_add_item(tree, hf_sna_th_daf, tvb, 2, 2, ENC_BIG_ENDIAN); + } + + /* Set DST addr */ + set_address_tvb(&pinfo->net_dst, sna_address_type, SNA_FID01_ADDR_LEN, tvb, 2); + copy_address_shallow(&pinfo->dst, &pinfo->net_dst); + + proto_tree_add_item(tree, hf_sna_th_oaf, tvb, 4, 2, ENC_BIG_ENDIAN); + + /* Set SRC addr */ + set_address_tvb(&pinfo->net_src, sna_address_type, SNA_FID01_ADDR_LEN, tvb, 4); + copy_address_shallow(&pinfo->src, &pinfo->net_src); + + proto_tree_add_item(tree, hf_sna_th_snf, tvb, 6, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_th_dcf, tvb, 8, 2, ENC_BIG_ENDIAN); + + return bytes_in_header; +} + +#define SNA_FID2_ADDR_LEN 1 + +/* FID Type 2 */ +static int +dissect_fid2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + tvbuff_t **rh_tvb_ptr, next_dissection_t *continue_dissecting) +{ + proto_tree *bf_tree; + proto_item *bf_item; + guint8 th_0; + unsigned int mpf, id; + + const int bytes_in_header = 6; + + th_0 = tvb_get_guint8(tvb, 0); + mpf = mpf_value(th_0); + + if (tree) { + + /* Byte 0 */ + bf_item = proto_tree_add_item(tree, hf_sna_th_0, tvb, 0, 1, ENC_BIG_ENDIAN); + bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid); + + proto_tree_add_item(bf_tree, hf_sna_th_fid, tvb, 0, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(bf_tree, hf_sna_th_mpf, tvb, 0, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(bf_tree, hf_sna_th_odai,tvb, 0, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(bf_tree, hf_sna_th_efi, tvb, 0, 1, ENC_BIG_ENDIAN); + + + /* Byte 1 */ + proto_tree_add_item(tree, hf_sna_reserved, tvb, 1, 1, ENC_NA); + + /* Byte 2 */ + proto_tree_add_item(tree, hf_sna_th_daf, tvb, 2, 1, ENC_BIG_ENDIAN); + } + + /* Set DST addr */ + set_address_tvb(&pinfo->net_dst, sna_address_type, SNA_FID2_ADDR_LEN, tvb, 2); + copy_address_shallow(&pinfo->dst, &pinfo->net_dst); + + /* Byte 3 */ + proto_tree_add_item(tree, hf_sna_th_oaf, tvb, 3, 1, ENC_BIG_ENDIAN); + + /* Set SRC addr */ + set_address_tvb(&pinfo->net_src, sna_address_type, SNA_FID2_ADDR_LEN, tvb, 3); + copy_address_shallow(&pinfo->src, &pinfo->net_src); + + id = tvb_get_ntohs(tvb, 4); + proto_tree_add_item(tree, hf_sna_th_snf, tvb, 4, 2, ENC_BIG_ENDIAN); + + if (mpf != MPF_WHOLE_BIU && !sna_defragment) { + if (mpf == MPF_FIRST_SEGMENT) { + *continue_dissecting = rh_only; + } else { + *continue_dissecting = stop_here; + } + + } + else if (sna_defragment) { + *rh_tvb_ptr = defragment_by_sequence(pinfo, tvb, + bytes_in_header, mpf, id); + } + + return bytes_in_header; +} + +/* FID Type 3 */ +static int +dissect_fid3(tvbuff_t *tvb, proto_tree *tree) +{ + proto_tree *bf_tree; + proto_item *bf_item; + guint8 th_0; + + const int bytes_in_header = 2; + + /* If we're not filling a proto_tree, return now */ + if (!tree) + return bytes_in_header; + + th_0 = tvb_get_guint8(tvb, 0); + + /* Create the bitfield tree */ + bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, th_0); + bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid); + + proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0); + proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0); + proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0); + + proto_tree_add_item(tree, hf_sna_th_lsid, tvb, 1, 1, ENC_BIG_ENDIAN); + + return bytes_in_header; +} + +static int +dissect_fid4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int offset = 0; + guint8 th_byte, mft; + guint16 def, oef; + guint32 dsaf, osaf; + static int * const byte0_fields[] = { + &hf_sna_th_fid, + &hf_sna_th_tg_sweep, + &hf_sna_th_er_vr_supp_ind, + &hf_sna_th_vr_pac_cnt_ind, + &hf_sna_th_ntwk_prty, + NULL + }; + static int * const byte1_fields[] = { + &hf_sna_th_tgsf, + &hf_sna_th_mft, + &hf_sna_th_piubf, + NULL + }; + static int * const byte2_mft_fields[] = { + &hf_sna_th_nlpoi, + &hf_sna_th_nlp_cp, + &hf_sna_th_ern, + NULL + }; + static int * const byte2_fields[] = { + &hf_sna_th_iern, + &hf_sna_th_ern, + NULL + }; + static int * const byte3_fields[] = { + &hf_sna_th_vrn, + &hf_sna_th_tpf, + NULL + }; + static int * const byte4_fields[] = { + &hf_sna_th_vr_cwi, + &hf_sna_th_tg_nonfifo_ind, + &hf_sna_th_vr_sqti, + /* I'm not sure about byte-order on this one... */ + &hf_sna_th_tg_snf, + NULL + }; + static int * const byte6_fields[] = { + &hf_sna_th_vrprq, + &hf_sna_th_vrprs, + &hf_sna_th_vr_cwri, + &hf_sna_th_vr_rwi, + /* I'm not sure about byte-order on this one... */ + &hf_sna_th_vr_snf_send, + NULL + }; + static int * const byte16_fields[] = { + &hf_sna_th_snai, + /* We luck out here because in their infinite wisdom the SNA + * architects placed the MPF and EFI fields in the same bitfield + * locations, even though for FID4 they're not in byte 0. + * Thank you IBM! */ + &hf_sna_th_mpf, + &hf_sna_th_efi, + NULL + }; + + struct sna_fid_type_4_addr *src, *dst; + + const int bytes_in_header = 26; + + /* If we're not filling a proto_tree, return now */ + if (!tree) + return bytes_in_header; + + /* Byte 0 */ + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_0, + ett_sna_th_fid, byte0_fields, ENC_NA); + + offset += 1; + th_byte = tvb_get_guint8(tvb, offset); + + /* Byte 1 */ + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte1, + ett_sna_th_fid, byte1_fields, ENC_NA); + + mft = th_byte & 0x04; + offset += 1; + + /* Byte 2 */ + if (mft) { + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte2, + ett_sna_th_fid, byte2_mft_fields, ENC_NA); + } else { + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte2, + ett_sna_th_fid, byte2_fields, ENC_NA); + } + + offset += 1; + + /* Byte 3 */ + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte3, + ett_sna_th_fid, byte3_fields, ENC_NA); + offset += 1; + + /* Bytes 4-5 */ + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte4, + ett_sna_th_fid, byte4_fields, ENC_BIG_ENDIAN); + offset += 2; + + /* Create the bitfield tree */ + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte6, + ett_sna_th_fid, byte6_fields, ENC_BIG_ENDIAN); + offset += 2; + + dsaf = tvb_get_ntohl(tvb, 8); + /* Bytes 8-11 */ + proto_tree_add_uint(tree, hf_sna_th_dsaf, tvb, offset, 4, dsaf); + + offset += 4; + + osaf = tvb_get_ntohl(tvb, 12); + /* Bytes 12-15 */ + proto_tree_add_uint(tree, hf_sna_th_osaf, tvb, offset, 4, osaf); + + offset += 4; + + /* Byte 16 */ + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_th_byte16, + ett_sna_th_fid, byte16_fields, ENC_NA); + + /* 1 for byte 16, 1 for byte 17 which is reserved */ + offset += 2; + + def = tvb_get_ntohs(tvb, 18); + /* Bytes 18-25 */ + proto_tree_add_uint(tree, hf_sna_th_def, tvb, offset, 2, def); + + /* Addresses in FID 4 are discontiguous, sigh */ + dst = wmem_new0(pinfo->pool, struct sna_fid_type_4_addr); + dst->saf = dsaf; + dst->ef = def; + set_address(&pinfo->net_dst, sna_address_type, SNA_FID_TYPE_4_ADDR_LEN, dst); + copy_address_shallow(&pinfo->dst, &pinfo->net_dst); + + oef = tvb_get_ntohs(tvb, 20); + proto_tree_add_uint(tree, hf_sna_th_oef, tvb, offset+2, 2, oef); + + /* Addresses in FID 4 are discontiguous, sigh */ + src = wmem_new0(pinfo->pool, struct sna_fid_type_4_addr); + src->saf = osaf; + src->ef = oef; + set_address(&pinfo->net_src, sna_address_type, SNA_FID_TYPE_4_ADDR_LEN, src); + copy_address_shallow(&pinfo->src, &pinfo->net_src); + + proto_tree_add_item(tree, hf_sna_th_snf, tvb, offset+4, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_th_dcf, tvb, offset+6, 2, ENC_BIG_ENDIAN); + + return bytes_in_header; +} + +/* FID Type 5 */ +static int +dissect_fid5(tvbuff_t *tvb, proto_tree *tree) +{ + proto_tree *bf_tree; + proto_item *bf_item; + guint8 th_0; + + const int bytes_in_header = 12; + + /* If we're not filling a proto_tree, return now */ + if (!tree) + return bytes_in_header; + + th_0 = tvb_get_guint8(tvb, 0); + + /* Create the bitfield tree */ + bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, th_0); + bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid); + + proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0); + proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0); + proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0); + + proto_tree_add_item(tree, hf_sna_reserved, tvb, 1, 1, ENC_NA); + proto_tree_add_item(tree, hf_sna_th_snf, tvb, 2, 2, ENC_BIG_ENDIAN); + + proto_tree_add_item(tree, hf_sna_th_sa, tvb, 4, 8, ENC_NA); + + return bytes_in_header; + +} + +/* FID Type f */ +static int +dissect_fidf(tvbuff_t *tvb, proto_tree *tree) +{ + proto_tree *bf_tree; + proto_item *bf_item; + guint8 th_0; + + const int bytes_in_header = 26; + + /* If we're not filling a proto_tree, return now */ + if (!tree) + return bytes_in_header; + + th_0 = tvb_get_guint8(tvb, 0); + + /* Create the bitfield tree */ + bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, th_0); + bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid); + + proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0); + proto_tree_add_item(tree, hf_sna_reserved, tvb, 1, 1, ENC_NA); + + proto_tree_add_item(tree, hf_sna_th_cmd_fmt, tvb, 2, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_th_cmd_type, tvb, 3, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_sna_th_cmd_sn, tvb, 4, 2, ENC_BIG_ENDIAN); + + /* Yup, bytes 6-23 are reserved! */ + proto_tree_add_item(tree, hf_sna_reserved, tvb, 6, 18, ENC_NA); + + proto_tree_add_item(tree, hf_sna_th_dcf, tvb, 24, 2, ENC_BIG_ENDIAN); + + return bytes_in_header; +} + +static void +dissect_fid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + proto_tree *parent_tree) +{ + + proto_tree *th_tree = NULL, *rh_tree = NULL; + proto_item *th_ti = NULL, *rh_ti = NULL; + guint8 th_fid; + int th_header_len = 0; + int offset, rh_offset; + tvbuff_t *rh_tvb = NULL; + next_dissection_t continue_dissecting = everything; + + /* Transmission Header Format Identifier */ + th_fid = hi_nibble(tvb_get_guint8(tvb, 0)); + + /* Summary information */ + col_add_str(pinfo->cinfo, COL_INFO, + val_to_str(th_fid, sna_th_fid_vals, "Unknown FID: %01x")); + + if (tree) { + /* --- TH --- */ + /* Don't bother setting length. We'll set it later after we + * find the length of TH */ + th_ti = proto_tree_add_item(tree, hf_sna_th, tvb, 0, -1, + ENC_NA); + th_tree = proto_item_add_subtree(th_ti, ett_sna_th); + } + + /* Get size of TH */ + switch(th_fid) { + case 0x0: + case 0x1: + th_header_len = dissect_fid0_1(tvb, pinfo, th_tree); + break; + case 0x2: + th_header_len = dissect_fid2(tvb, pinfo, th_tree, + &rh_tvb, &continue_dissecting); + break; + case 0x3: + th_header_len = dissect_fid3(tvb, th_tree); + break; + case 0x4: + th_header_len = dissect_fid4(tvb, pinfo, th_tree); + break; + case 0x5: + th_header_len = dissect_fid5(tvb, th_tree); + break; + case 0xf: + th_header_len = dissect_fidf(tvb, th_tree); + break; + default: + call_data_dissector(tvb_new_subset_remaining(tvb, 1), pinfo, parent_tree); + return; + } + + offset = th_header_len; + + /* Short-circuit ? */ + if (continue_dissecting == stop_here) { + proto_tree_add_item(tree, hf_sna_biu_segment_data, tvb, offset, -1, ENC_NA); + return; + } + + /* If the FID dissector function didn't create an rh_tvb, then we just + * use the rest of our tvbuff as the rh_tvb. */ + if (!rh_tvb) + rh_tvb = tvb_new_subset_remaining(tvb, offset); + rh_offset = 0; + + /* Process the rest of the SNA packet, starting with RH */ + if (tree) { + proto_item_set_len(th_ti, th_header_len); + + /* --- RH --- */ + rh_ti = proto_tree_add_item(tree, hf_sna_rh, rh_tvb, rh_offset, + RH_LEN, ENC_NA); + rh_tree = proto_item_add_subtree(rh_ti, ett_sna_rh); + dissect_rh(rh_tvb, rh_offset, rh_tree); + } + + rh_offset += RH_LEN; + + if (tvb_offset_exists(rh_tvb, rh_offset)) { + /* Short-circuit ? */ + if (continue_dissecting == rh_only) { + proto_tree_add_item(tree, hf_sna_biu_segment_data, rh_tvb, rh_offset, -1, ENC_NA); + return; + } + + call_data_dissector(tvb_new_subset_remaining(rh_tvb, rh_offset), + pinfo, parent_tree); + } +} + +/* -------------------------------------------------------------------- + * Chapter 5 Request/Response Headers (RHs) + * -------------------------------------------------------------------- + */ + +static void +dissect_rh(tvbuff_t *tvb, int offset, proto_tree *tree) +{ + gboolean is_response; + guint8 rh_0; + static int * const sna_rh_fields[] = { + &hf_sna_rh_rri, + &hf_sna_rh_ru_category, + &hf_sna_rh_fi, + &hf_sna_rh_sdi, + &hf_sna_rh_bci, + &hf_sna_rh_eci, + NULL + }; + static int * const sna_rh_1_req_fields[] = { + &hf_sna_rh_dr1, + &hf_sna_rh_lcci, + &hf_sna_rh_dr2, + &hf_sna_rh_eri, + &hf_sna_rh_rlwi, + &hf_sna_rh_qri, + &hf_sna_rh_pi, + NULL + }; + static int * const sna_rh_1_rsp_fields[] = { + &hf_sna_rh_dr1, + &hf_sna_rh_dr2, + &hf_sna_rh_rti, + &hf_sna_rh_qri, + &hf_sna_rh_pi, + NULL + }; + static int * const sna_rh_2_req_fields[] = { + &hf_sna_rh_bbi, + &hf_sna_rh_ebi, + &hf_sna_rh_cdi, + &hf_sna_rh_csi, + &hf_sna_rh_edi, + &hf_sna_rh_pdi, + &hf_sna_rh_cebi, + NULL + }; + + if (!tree) + return; + + /* Create the bitfield tree for byte 0*/ + rh_0 = tvb_get_guint8(tvb, offset); + is_response = (rh_0 & 0x80); + + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_rh_0, + ett_sna_rh_0, sna_rh_fields, ENC_BIG_ENDIAN); + offset += 1; + + /* Create the bitfield tree for byte 1*/ + if (is_response) { + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_rh_1, + ett_sna_rh_1, sna_rh_1_rsp_fields, ENC_BIG_ENDIAN); + } else { + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_rh_1, + ett_sna_rh_1, sna_rh_1_req_fields, ENC_BIG_ENDIAN); + } + offset += 1; + + /* Create the bitfield tree for byte 2*/ + if (!is_response) { + proto_tree_add_bitmask(tree, tvb, offset, hf_sna_rh_2, + ett_sna_rh_2, sna_rh_2_req_fields, ENC_BIG_ENDIAN); + } else { + proto_tree_add_item(tree, hf_sna_rh_2, tvb, offset, 1, ENC_BIG_ENDIAN); + } + + /* XXX - check for sdi. If TRUE, the next 4 bytes will be sense data */ +} + +/* -------------------------------------------------------------------- + * Chapter 6 Request/Response Units (RUs) + * -------------------------------------------------------------------- + */ + +/* -------------------------------------------------------------------- + * Chapter 9 Common Fields + * -------------------------------------------------------------------- + */ + +static void +dissect_control_05hpr(tvbuff_t *tvb, proto_tree *tree, int hpr, + enum parse parse) +{ + guint16 offset, len, pad; + static int * const sna_control_05hpr_fields[] = { + &hf_sna_control_05_ptp, + NULL + }; + + if (!tree) + return; + + proto_tree_add_bitmask(tree, tvb, 2, hf_sna_control_05_type, + ett_sna_control_05hpr_type, sna_control_05hpr_fields, ENC_BIG_ENDIAN); + + proto_tree_add_item(tree, hf_sna_reserved, tvb, 3, 1, ENC_NA); + + offset = 4; + + while (tvb_offset_exists(tvb, offset)) { + if (parse == LT) { + len = tvb_get_guint8(tvb, offset+0); + } else { + len = tvb_get_guint8(tvb, offset+1); + } + if (len) { + dissect_sna_control(tvb, offset, len, tree, hpr, parse); + pad = (len+3) & 0xfffc; + if (pad > len) { + proto_tree_add_item(tree, hf_sna_padding, tvb, offset+len, pad-len, ENC_NA); + } + offset += pad; + } else { + return; + } + } +} + +static void +dissect_control_05(tvbuff_t *tvb, proto_tree *tree) +{ + if(!tree) + return; + + proto_tree_add_item(tree, hf_sna_control_05_delay, tvb, 2, 2, ENC_BIG_ENDIAN); +} + +static void +dissect_control_0e(tvbuff_t *tvb, proto_tree *tree) +{ + gint len; + + if (!tree) + return; + + proto_tree_add_item(tree, hf_sna_control_0e_type, tvb, 2, 1, ENC_BIG_ENDIAN); + + len = tvb_reported_length_remaining(tvb, 3); + if (len <= 0) + return; + + proto_tree_add_item(tree, hf_sna_control_0e_value, tvb, 3, len, ENC_EBCDIC); +} + +static void +dissect_sna_control(tvbuff_t *parent_tvb, int offset, int control_len, + proto_tree *tree, int hpr, enum parse parse) +{ + tvbuff_t *tvb; + gint length, reported_length; + proto_tree *sub_tree; + int len, key; + gint ett; + + length = tvb_captured_length_remaining(parent_tvb, offset); + reported_length = tvb_reported_length_remaining(parent_tvb, offset); + if (control_len < length) + length = control_len; + if (control_len < reported_length) + reported_length = control_len; + tvb = tvb_new_subset_length_caplen(parent_tvb, offset, length, reported_length); + + sub_tree = NULL; + + if (parse == LT) { + len = tvb_get_guint8(tvb, 0); + key = tvb_get_guint8(tvb, 1); + } else { + key = tvb_get_guint8(tvb, 0); + len = tvb_get_guint8(tvb, 1); + } + ett = ett_sna_control_un; + + if (tree) { + if (key == 5) { + if (hpr) ett = ett_sna_control_05hpr; + else ett = ett_sna_control_05; + } + if (key == 0x0e) ett = ett_sna_control_0e; + + if (((key == 0) || (key == 3) || (key == 5)) && hpr) + sub_tree = proto_tree_add_subtree(tree, tvb, 0, -1, ett, NULL, + val_to_str_const(key, sna_control_hpr_vals, + "Unknown Control Vector")); + else + sub_tree = proto_tree_add_subtree(tree, tvb, 0, -1, ett, NULL, + val_to_str_const(key, sna_control_vals, + "Unknown Control Vector")); + if (parse == LT) { + proto_tree_add_uint(sub_tree, hf_sna_control_len, + tvb, 0, 1, len); + if (((key == 0) || (key == 3) || (key == 5)) && hpr) + proto_tree_add_uint(sub_tree, + hf_sna_control_hprkey, tvb, 1, 1, key); + else + proto_tree_add_uint(sub_tree, + hf_sna_control_key, tvb, 1, 1, key); + } else { + if (((key == 0) || (key == 3) || (key == 5)) && hpr) + proto_tree_add_uint(sub_tree, + hf_sna_control_hprkey, tvb, 0, 1, key); + else + proto_tree_add_uint(sub_tree, + hf_sna_control_key, tvb, 0, 1, key); + proto_tree_add_uint(sub_tree, hf_sna_control_len, + tvb, 1, 1, len); + } + } + switch(key) { + case 0x05: + if (hpr) + dissect_control_05hpr(tvb, sub_tree, hpr, + parse); + else + dissect_control_05(tvb, sub_tree); + break; + case 0x0e: + dissect_control_0e(tvb, sub_tree); + break; + } +} + +/* -------------------------------------------------------------------- + * Chapter 11 Function Management (FM) Headers + * -------------------------------------------------------------------- + */ + +/* -------------------------------------------------------------------- + * Chapter 12 Presentation Services (PS) Headers + * -------------------------------------------------------------------- + */ + +/* -------------------------------------------------------------------- + * Chapter 13 GDS Variables + * -------------------------------------------------------------------- + */ + +static void +dissect_gds(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + proto_tree *parent_tree) +{ + guint16 length; + int cont; + int offset = 0; + proto_item *pi; + proto_tree *subtree; + gboolean first_ll = TRUE; + + do { + length = tvb_get_ntohs(tvb, offset) & 0x7fff; + cont = (tvb_get_ntohs(tvb, offset) & 0x8000) ? 1 : 0; + + pi = proto_tree_add_item(tree, hf_sna_gds, tvb, offset, -1, ENC_NA); + subtree = proto_item_add_subtree(pi, ett_sna_gds); + proto_tree_add_item(subtree, hf_sna_gds_len, tvb, offset, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(subtree, hf_sna_gds_cont, tvb, offset, 2, ENC_BIG_ENDIAN); + if (length < 2 ) /* escape sequence */ + return; + offset += 2; + length -= 2; + if (first_ll) { + proto_tree_add_item(subtree, hf_sna_gds_type, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + length -= 2; + first_ll = FALSE; + } + if (length > 0) { + proto_tree_add_item(subtree, hf_sna_gds_info, tvb, offset, length, ENC_NA); + offset += length; + } + } while(cont); + proto_item_set_len(pi, offset); + if (tvb_offset_exists(tvb, offset)) + call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, parent_tree); +} + +/* -------------------------------------------------------------------- + * General stuff + * -------------------------------------------------------------------- + */ + +static int +dissect_sna(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + guint8 fid; + proto_tree *sna_tree = NULL; + proto_item *sna_ti = NULL; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "SNA"); + col_clear(pinfo->cinfo, COL_INFO); + + /* SNA data should be printed in EBCDIC, not ASCII */ + pinfo->fd->encoding = PACKET_CHAR_ENC_CHAR_EBCDIC; + + if (tree) { + + /* Don't bother setting length. We'll set it later after we find + * the lengths of TH/RH/RU */ + sna_ti = proto_tree_add_item(tree, proto_sna, tvb, 0, -1, + ENC_NA); + sna_tree = proto_item_add_subtree(sna_ti, ett_sna); + } + + /* Transmission Header Format Identifier */ + fid = hi_nibble(tvb_get_guint8(tvb, 0)); + switch(fid) { + case 0xa: /* HPR Network Layer Packet */ + case 0xb: + case 0xc: + case 0xd: + dissect_nlp(tvb, pinfo, sna_tree, tree); + break; + default: + dissect_fid(tvb, pinfo, sna_tree, tree); + } + return tvb_captured_length(tvb); +} + +static int +dissect_sna_xid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + proto_tree *sna_tree = NULL; + proto_item *sna_ti = NULL; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "SNA"); + col_clear(pinfo->cinfo, COL_INFO); + + /* SNA data should be printed in EBCDIC, not ASCII */ + pinfo->fd->encoding = PACKET_CHAR_ENC_CHAR_EBCDIC; + + if (tree) { + + /* Don't bother setting length. We'll set it later after we find + * the lengths of XID */ + sna_ti = proto_tree_add_item(tree, proto_sna_xid, tvb, 0, -1, + ENC_NA); + sna_tree = proto_item_add_subtree(sna_ti, ett_sna); + } + dissect_xid(tvb, pinfo, sna_tree, tree); + return tvb_captured_length(tvb); +} + + +void +proto_register_sna(void) +{ + static hf_register_info hf[] = { + { &hf_sna_th, + { "Transmission Header", "sna.th", FT_NONE, BASE_NONE, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_0, + { "Transmission Header Byte 0", "sna.th.0", FT_UINT8, BASE_HEX, + NULL, 0x0, + "TH Byte 0", HFILL }}, + + { &hf_sna_th_fid, + { "Format Identifier", "sna.th.fid", FT_UINT8, BASE_HEX, + VALS(sna_th_fid_vals), 0xf0, NULL, HFILL }}, + + { &hf_sna_th_mpf, + { "Mapping Field", "sna.th.mpf", FT_UINT8, + BASE_DEC, VALS(sna_th_mpf_vals), 0x0c, NULL, HFILL }}, + + { &hf_sna_th_odai, + { "ODAI Assignment Indicator", "sna.th.odai", FT_UINT8, + BASE_DEC, NULL, 0x02, NULL, HFILL }}, + + { &hf_sna_th_efi, + { "Expedited Flow Indicator", "sna.th.efi", FT_UINT8, + BASE_DEC, VALS(sna_th_efi_vals), 0x01, NULL, HFILL }}, + + { &hf_sna_th_daf, + { "Destination Address Field", "sna.th.daf", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_oaf, + { "Origin Address Field", "sna.th.oaf", FT_UINT16, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_snf, + { "Sequence Number Field", "sna.th.snf", FT_UINT16, BASE_DEC, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_dcf, + { "Data Count Field", "sna.th.dcf", FT_UINT16, BASE_DEC, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_lsid, + { "Local Session Identification", "sna.th.lsid", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_tg_sweep, + { "Transmission Group Sweep", "sna.th.tg_sweep", FT_UINT8, + BASE_DEC, VALS(sna_th_tg_sweep_vals), 0x08, NULL, HFILL }}, + + { &hf_sna_th_er_vr_supp_ind, + { "ER and VR Support Indicator", "sna.th.er_vr_supp_ind", + FT_UINT8, BASE_DEC, VALS(sna_th_er_vr_supp_ind_vals), + 0x04, NULL, HFILL }}, + + { &hf_sna_th_vr_pac_cnt_ind, + { "Virtual Route Pacing Count Indicator", + "sna.th.vr_pac_cnt_ind", FT_UINT8, BASE_DEC, + VALS(sna_th_vr_pac_cnt_ind_vals), 0x02, NULL, HFILL }}, + + { &hf_sna_th_ntwk_prty, + { "Network Priority", "sna.th.ntwk_prty", FT_UINT8, BASE_DEC, + VALS(sna_th_ntwk_prty_vals), 0x01, NULL, HFILL }}, + + { &hf_sna_th_tgsf, + { "Transmission Group Segmenting Field", "sna.th.tgsf", + FT_UINT8, BASE_HEX, VALS(sna_th_tgsf_vals), 0xc0, + NULL, HFILL }}, + + { &hf_sna_th_mft, + { "MPR FID4 Type", "sna.th.mft", FT_BOOLEAN, 8, + NULL, 0x04, NULL, HFILL }}, + + { &hf_sna_th_piubf, + { "PIU Blocking Field", "sna.th.piubf", FT_UINT8, BASE_HEX, + VALS(sna_th_piubf_vals), 0x03, NULL, HFILL }}, + + { &hf_sna_th_iern, + { "Initial Explicit Route Number", "sna.th.iern", FT_UINT8, + BASE_DEC, NULL, 0xf0, NULL, HFILL }}, + + { &hf_sna_th_nlpoi, + { "NLP Offset Indicator", "sna.th.nlpoi", FT_UINT8, BASE_DEC, + VALS(sna_th_nlpoi_vals), 0x80, NULL, HFILL }}, + + { &hf_sna_th_nlp_cp, + { "NLP Count or Padding", "sna.th.nlp_cp", FT_UINT8, BASE_DEC, + NULL, 0x70, NULL, HFILL }}, + + { &hf_sna_th_ern, + { "Explicit Route Number", "sna.th.ern", FT_UINT8, BASE_DEC, + NULL, 0x0f, NULL, HFILL }}, + + { &hf_sna_th_vrn, + { "Virtual Route Number", "sna.th.vrn", FT_UINT8, BASE_DEC, + NULL, 0xf0, NULL, HFILL }}, + + { &hf_sna_th_tpf, + { "Transmission Priority Field", "sna.th.tpf", FT_UINT8, + BASE_HEX, VALS(sna_th_tpf_vals), 0x03, NULL, HFILL }}, + + { &hf_sna_th_vr_cwi, + { "Virtual Route Change Window Indicator", "sna.th.vr_cwi", + FT_UINT16, BASE_DEC, VALS(sna_th_vr_cwi_vals), 0x8000, + "Change Window Indicator", HFILL }}, + + { &hf_sna_th_tg_nonfifo_ind, + { "Transmission Group Non-FIFO Indicator", + "sna.th.tg_nonfifo_ind", FT_BOOLEAN, 16, + TFS(&sna_th_tg_nonfifo_ind_truth), 0x4000, NULL, HFILL }}, + + { &hf_sna_th_vr_sqti, + { "Virtual Route Sequence and Type Indicator", "sna.th.vr_sqti", + FT_UINT16, BASE_HEX, VALS(sna_th_vr_sqti_vals), 0x3000, + "Route Sequence and Type", HFILL }}, + + { &hf_sna_th_tg_snf, + { "Transmission Group Sequence Number Field", "sna.th.tg_snf", + FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }}, + + { &hf_sna_th_vrprq, + { "Virtual Route Pacing Request", "sna.th.vrprq", FT_BOOLEAN, + 16, TFS(&sna_th_vrprq_truth), 0x8000, NULL, HFILL }}, + + { &hf_sna_th_vrprs, + { "Virtual Route Pacing Response", "sna.th.vrprs", FT_BOOLEAN, + 16, TFS(&sna_th_vrprs_truth), 0x4000, NULL, HFILL }}, + + { &hf_sna_th_vr_cwri, + { "Virtual Route Change Window Reply Indicator", + "sna.th.vr_cwri", FT_UINT16, BASE_DEC, + VALS(sna_th_vr_cwri_vals), 0x2000, NULL, HFILL }}, + + { &hf_sna_th_vr_rwi, + { "Virtual Route Reset Window Indicator", "sna.th.vr_rwi", + FT_BOOLEAN, 16, TFS(&sna_th_vr_rwi_truth), 0x1000, + NULL, HFILL }}, + + { &hf_sna_th_vr_snf_send, + { "Virtual Route Send Sequence Number Field", + "sna.th.vr_snf_send", FT_UINT16, BASE_DEC, NULL, 0x0fff, + "Send Sequence Number Field", HFILL }}, + + { &hf_sna_th_dsaf, + { "Destination Subarea Address Field", "sna.th.dsaf", + FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_osaf, + { "Origin Subarea Address Field", "sna.th.osaf", FT_UINT32, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_snai, + { "SNA Indicator", "sna.th.snai", FT_BOOLEAN, 8, NULL, 0x10, + "Used to identify whether the PIU originated or is destined for an SNA or non-SNA device.", HFILL }}, + + { &hf_sna_th_def, + { "Destination Element Field", "sna.th.def", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_oef, + { "Origin Element Field", "sna.th.oef", FT_UINT16, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_sa, + { "Session Address", "sna.th.sa", FT_BYTES, BASE_NONE, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_cmd_fmt, + { "Command Format", "sna.th.cmd_fmt", FT_UINT8, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_cmd_type, + { "Command Type", "sna.th.cmd_type", FT_UINT8, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_cmd_sn, + { "Command Sequence Number", "sna.th.cmd_sn", FT_UINT16, + BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_byte1, + { "Transmission Header Bytes 1", "sna.th.byte1", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_byte2, + { "Transmission Header Bytes 2", "sna.th.byte2", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_byte3, + { "Transmission Header Bytes 3", "sna.th.byte3", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_byte4, + { "Transmission Header Bytes 4-5", "sna.th.byte4", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_byte6, + { "Transmission Header Bytes 6-7", "sna.th.byte6", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_th_byte16, + { "Transmission Header Bytes 16", "sna.th.byte16", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_nhdr, + { "Network Layer Packet Header", "sna.nlp.nhdr", FT_NONE, + BASE_NONE, NULL, 0x0, "NHDR", HFILL }}, + + { &hf_sna_nlp_nhdr_0, + { "Network Layer Packet Header Byte 0", "sna.nlp.nhdr.0", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_nhdr_1, + { "Network Layer Packet Header Byte 1", "sna.nlp.nhdr.1", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_sm, + { "Switching Mode Field", "sna.nlp.nhdr.sm", FT_UINT8, + BASE_HEX, VALS(sna_nlp_sm_vals), 0xe0, NULL, HFILL }}, + + { &hf_sna_nlp_tpf, + { "Transmission Priority Field", "sna.nlp.nhdr.tpf", FT_UINT8, + BASE_HEX, VALS(sna_th_tpf_vals), 0x06, NULL, HFILL }}, + + { &hf_sna_nlp_ft, + { "Function Type", "sna.nlp.nhdr.ft", FT_UINT8, BASE_HEX, + VALS(sna_nlp_ft_vals), 0xF0, NULL, HFILL }}, + + { &hf_sna_nlp_tspi, + { "Time Sensitive Packet Indicator", "sna.nlp.nhdr.tspi", + FT_BOOLEAN, 8, TFS(&sna_nlp_tspi_truth), 0x08, NULL, HFILL }}, + + { &hf_sna_nlp_slowdn1, + { "Slowdown 1", "sna.nlp.nhdr.slowdn1", FT_BOOLEAN, 8, + TFS(&sna_nlp_slowdn1_truth), 0x04, NULL, HFILL }}, + + { &hf_sna_nlp_slowdn2, + { "Slowdown 2", "sna.nlp.nhdr.slowdn2", FT_BOOLEAN, 8, + TFS(&sna_nlp_slowdn2_truth), 0x02, NULL, HFILL }}, + + { &hf_sna_nlp_fra, + { "Function Routing Address Entry", "sna.nlp.nhdr.fra", + FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }}, + + { &hf_sna_nlp_anr, + { "Automatic Network Routing Entry", "sna.nlp.nhdr.anr", + FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }}, + + { &hf_sna_nlp_frh, + { "Transmission Priority Field", "sna.nlp.frh", FT_UINT8, + BASE_HEX, VALS(sna_nlp_frh_vals), 0, NULL, HFILL }}, + + { &hf_sna_nlp_thdr, + { "RTP Transport Header", "sna.nlp.thdr", FT_NONE, BASE_NONE, + NULL, 0x0, "THDR", HFILL }}, + + { &hf_sna_nlp_tcid, + { "Transport Connection Identifier", "sna.nlp.thdr.tcid", + FT_BYTES, BASE_NONE, NULL, 0x0, "TCID", HFILL }}, + + { &hf_sna_nlp_thdr_8, + { "RTP Transport Packet Header Byte 8", "sna.nlp.thdr.8", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_setupi, + { "Setup Indicator", "sna.nlp.thdr.setupi", FT_BOOLEAN, 8, + TFS(&sna_nlp_setupi_truth), 0x40, NULL, HFILL }}, + + { &hf_sna_nlp_somi, + { "Start Of Message Indicator", "sna.nlp.thdr.somi", + FT_BOOLEAN, 8, TFS(&sna_nlp_somi_truth), 0x20, NULL, HFILL }}, + + { &hf_sna_nlp_eomi, + { "End Of Message Indicator", "sna.nlp.thdr.eomi", FT_BOOLEAN, + 8, TFS(&sna_nlp_eomi_truth), 0x10, NULL, HFILL }}, + + { &hf_sna_nlp_sri, + { "Session Request Indicator", "sna.nlp.thdr.sri", FT_BOOLEAN, + 8, TFS(&sna_nlp_sri_truth), 0x08, NULL, HFILL }}, + + { &hf_sna_nlp_rasapi, + { "Reply ASAP Indicator", "sna.nlp.thdr.rasapi", FT_BOOLEAN, + 8, TFS(&sna_nlp_rasapi_truth), 0x04, NULL, HFILL }}, + + { &hf_sna_nlp_retryi, + { "Retry Indicator", "sna.nlp.thdr.retryi", FT_BOOLEAN, + 8, TFS(&sna_nlp_retryi_truth), 0x02, NULL, HFILL }}, + + { &hf_sna_nlp_thdr_9, + { "RTP Transport Packet Header Byte 9", "sna.nlp.thdr.9", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_lmi, + { "Last Message Indicator", "sna.nlp.thdr.lmi", FT_BOOLEAN, + 8, TFS(&sna_nlp_lmi_truth), 0x80, NULL, HFILL }}, + + { &hf_sna_nlp_cqfi, + { "Connection Qualifier Field Indicator", "sna.nlp.thdr.cqfi", + FT_BOOLEAN, 8, TFS(&sna_nlp_cqfi_truth), 0x08, NULL, HFILL }}, + + { &hf_sna_nlp_osi, + { "Optional Segments Present Indicator", "sna.nlp.thdr.osi", + FT_BOOLEAN, 8, TFS(&sna_nlp_osi_truth), 0x04, NULL, HFILL }}, + + { &hf_sna_nlp_offset, + { "Data Offset/4", "sna.nlp.thdr.offset", FT_UINT16, BASE_HEX, + NULL, 0x0, "Data Offset in Words", HFILL }}, + + { &hf_sna_nlp_dlf, + { "Data Length Field", "sna.nlp.thdr.dlf", FT_UINT32, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_bsn, + { "Byte Sequence Number", "sna.nlp.thdr.bsn", FT_UINT32, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_len, + { "Optional Segment Length/4", "sna.nlp.thdr.optional.len", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_type, + { "Optional Segment Type", "sna.nlp.thdr.optional.type", + FT_UINT8, BASE_HEX, VALS(sna_nlp_opti_vals), 0x0, NULL, + HFILL }}, + + { &hf_sna_nlp_opti_0d_version, + { "Version", "sna.nlp.thdr.optional.0d.version", + FT_UINT16, BASE_HEX, VALS(sna_nlp_opti_0d_version_vals), + 0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0d_4, + { "Connection Setup Byte 4", "sna.nlp.thdr.optional.0e.4", + FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0d_target, + { "Target Resource ID Present", + "sna.nlp.thdr.optional.0d.target", + FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0d_arb, + { "ARB Flow Control", "sna.nlp.thdr.optional.0d.arb", + FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0d_reliable, + { "Reliable Connection", "sna.nlp.thdr.optional.0d.reliable", + FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0d_dedicated, + { "Dedicated RTP Connection", + "sna.nlp.thdr.optional.0d.dedicated", + FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_stat, + { "Status", "sna.nlp.thdr.optional.0e.stat", + FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_gap, + { "Gap Detected", "sna.nlp.thdr.optional.0e.gap", + FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_idle, + { "RTP Idle Packet", "sna.nlp.thdr.optional.0e.idle", + FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_nabsp, + { "Number Of ABSP", "sna.nlp.thdr.optional.0e.nabsp", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_sync, + { "Status Report Number", "sna.nlp.thdr.optional.0e.sync", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_echo, + { "Status Acknowledge Number", "sna.nlp.thdr.optional.0e.echo", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_0e_rseq, + { "Received Sequence Number", "sna.nlp.thdr.optional.0e.rseq", + FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + +#if 0 + { &hf_sna_nlp_opti_0e_abspbeg, + { "ABSP Begin", "sna.nlp.thdr.optional.0e.abspbeg", + FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, +#endif + +#if 0 + { &hf_sna_nlp_opti_0e_abspend, + { "ABSP End", "sna.nlp.thdr.optional.0e.abspend", + FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, +#endif + + { &hf_sna_nlp_opti_0f_bits, + { "Client Bits", "sna.nlp.thdr.optional.0f.bits", + FT_UINT16, BASE_HEX, VALS(sna_nlp_opti_0f_bits_vals), + 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_10_tcid, + { "Transport Connection Identifier", + "sna.nlp.thdr.optional.10.tcid", + FT_BYTES, BASE_NONE, NULL, 0x0, "TCID", HFILL }}, + + { &hf_sna_nlp_opti_12_sense, + { "Sense Data", "sna.nlp.thdr.optional.12.sense", + FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_len, + { "Length", "sna.nlp.thdr.optional.14.si.len", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_key, + { "Key", "sna.nlp.thdr.optional.14.si.key", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_2, + { "Switching Information Byte 2", + "sna.nlp.thdr.optional.14.si.2", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_refifo, + { "Resequencing (REFIFO) Indicator", + "sna.nlp.thdr.optional.14.si.refifo", + FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_mobility, + { "Mobility Indicator", + "sna.nlp.thdr.optional.14.si.mobility", + FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_dirsearch, + { "Directory Search Required on Path Switch Indicator", + "sna.nlp.thdr.optional.14.si.dirsearch", + FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_limitres, + { "Limited Resource Link Indicator", + "sna.nlp.thdr.optional.14.si.limitres", + FT_BOOLEAN, 8, NULL, 0x10, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_ncescope, + { "NCE Scope Indicator", + "sna.nlp.thdr.optional.14.si.ncescope", + FT_BOOLEAN, 8, NULL, 0x08, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_mnpsrscv, + { "MNPS RSCV Retention Indicator", + "sna.nlp.thdr.optional.14.si.mnpsrscv", + FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_maxpsize, + { "Maximum Packet Size On Return Path", + "sna.nlp.thdr.optional.14.si.maxpsize", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_switch, + { "Path Switch Time", "sna.nlp.thdr.optional.14.si.switch", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_si_alive, + { "RTP Alive Timer", "sna.nlp.thdr.optional.14.si.alive", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_rr_len, + { "Length", "sna.nlp.thdr.optional.14.rr.len", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_rr_key, + { "Key", "sna.nlp.thdr.optional.14.rr.key", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_rr_2, + { "Return Route TG Descriptor Byte 2", + "sna.nlp.thdr.optional.14.rr.2", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_rr_bfe, + { "BF Entry Indicator", + "sna.nlp.thdr.optional.14.rr.bfe", + FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_nlp_opti_14_rr_num, + { "Number Of TG Control Vectors", + "sna.nlp.thdr.optional.14.rr.num", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_2, + { "Adaptive Rate Based Segment Byte 2", + "sna.nlp.thdr.optional.22.2", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_type, + { "Message Type", + "sna.nlp.thdr.optional.22.type", + FT_UINT8, BASE_HEX, + VALS(sna_nlp_opti_22_type_vals), 0xc0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_raa, + { "Rate Adjustment Action", + "sna.nlp.thdr.optional.22.raa", + FT_UINT8, BASE_HEX, + VALS(sna_nlp_opti_22_raa_vals), 0x38, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_parity, + { "Parity Indicator", + "sna.nlp.thdr.optional.22.parity", + FT_BOOLEAN, 8, NULL, 0x04, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_arb, + { "ARB Mode", + "sna.nlp.thdr.optional.22.arb", + FT_UINT8, BASE_HEX, + VALS(sna_nlp_opti_22_arb_vals), 0x03, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_3, + { "Adaptive Rate Based Segment Byte 3", + "sna.nlp.thdr.optional.22.3", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_ratereq, + { "Rate Request Correlator", + "sna.nlp.thdr.optional.22.ratereq", + FT_UINT8, BASE_DEC, NULL, 0xf0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_raterep, + { "Rate Reply Correlator", + "sna.nlp.thdr.optional.22.raterep", + FT_UINT8, BASE_DEC, NULL, 0x0f, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_field1, + { "Field 1", "sna.nlp.thdr.optional.22.field1", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_field2, + { "Field 2", "sna.nlp.thdr.optional.22.field2", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_field3, + { "Field 3", "sna.nlp.thdr.optional.22.field3", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_nlp_opti_22_field4, + { "Field 4", "sna.nlp.thdr.optional.22.field4", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_rh, + { "Request/Response Header", "sna.rh", FT_NONE, BASE_NONE, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_rh_0, + { "Request/Response Header Byte 0", "sna.rh.0", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_rh_1, + { "Request/Response Header Byte 1", "sna.rh.1", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_rh_2, + { "Request/Response Header Byte 2", "sna.rh.2", FT_UINT8, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_rh_rri, + { "Request/Response Indicator", "sna.rh.rri", FT_BOOLEAN, + 8, TFS(&tfs_response_request), 0x80, NULL, HFILL }}, + + { &hf_sna_rh_ru_category, + { "Request/Response Unit Category", "sna.rh.ru_category", + FT_UINT8, BASE_HEX, VALS(sna_rh_ru_category_vals), 0x60, + NULL, HFILL }}, + + { &hf_sna_rh_fi, + { "Format Indicator", "sna.rh.fi", FT_BOOLEAN, 8, + TFS(&sna_rh_fi_truth), 0x08, NULL, HFILL }}, + + { &hf_sna_rh_sdi, + { "Sense Data Included", "sna.rh.sdi", FT_BOOLEAN, 8, + TFS(&tfs_included_not_included), 0x04, NULL, HFILL }}, + + { &hf_sna_rh_bci, + { "Begin Chain Indicator", "sna.rh.bci", FT_BOOLEAN, 8, + TFS(&sna_rh_bci_truth), 0x02, NULL, HFILL }}, + + { &hf_sna_rh_eci, + { "End Chain Indicator", "sna.rh.eci", FT_BOOLEAN, 8, + TFS(&sna_rh_eci_truth), 0x01, NULL, HFILL }}, + + { &hf_sna_rh_dr1, + { "Definite Response 1 Indicator", "sna.rh.dr1", FT_BOOLEAN, + 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_rh_lcci, + { "Length-Checked Compression Indicator", "sna.rh.lcci", + FT_BOOLEAN, 8, TFS(&sna_rh_lcci_truth), 0x40, NULL, HFILL }}, + + { &hf_sna_rh_dr2, + { "Definite Response 2 Indicator", "sna.rh.dr2", FT_BOOLEAN, + 8, NULL, 0x20, NULL, HFILL }}, + + { &hf_sna_rh_eri, + { "Exception Response Indicator", "sna.rh.eri", FT_BOOLEAN, + 8, NULL, 0x10, NULL, HFILL }}, + + { &hf_sna_rh_rti, + { "Response Type Indicator", "sna.rh.rti", FT_BOOLEAN, + 8, TFS(&sna_rh_rti_truth), 0x10, NULL, HFILL }}, + + { &hf_sna_rh_rlwi, + { "Request Larger Window Indicator", "sna.rh.rlwi", FT_BOOLEAN, + 8, NULL, 0x04, NULL, HFILL }}, + + { &hf_sna_rh_qri, + { "Queued Response Indicator", "sna.rh.qri", FT_BOOLEAN, + 8, TFS(&sna_rh_qri_truth), 0x02, NULL, HFILL }}, + + { &hf_sna_rh_pi, + { "Pacing Indicator", "sna.rh.pi", FT_BOOLEAN, + 8, NULL, 0x01, NULL, HFILL }}, + + { &hf_sna_rh_bbi, + { "Begin Bracket Indicator", "sna.rh.bbi", FT_BOOLEAN, + 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_rh_ebi, + { "End Bracket Indicator", "sna.rh.ebi", FT_BOOLEAN, + 8, NULL, 0x40, NULL, HFILL }}, + + { &hf_sna_rh_cdi, + { "Change Direction Indicator", "sna.rh.cdi", FT_BOOLEAN, + 8, NULL, 0x20, NULL, HFILL }}, + + { &hf_sna_rh_csi, + { "Code Selection Indicator", "sna.rh.csi", FT_UINT8, BASE_DEC, + VALS(sna_rh_csi_vals), 0x08, NULL, HFILL }}, + + { &hf_sna_rh_edi, + { "Enciphered Data Indicator", "sna.rh.edi", FT_BOOLEAN, 8, + NULL, 0x04, NULL, HFILL }}, + + { &hf_sna_rh_pdi, + { "Padded Data Indicator", "sna.rh.pdi", FT_BOOLEAN, 8, NULL, + 0x02, NULL, HFILL }}, + + { &hf_sna_rh_cebi, + { "Conditional End Bracket Indicator", "sna.rh.cebi", + FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL }}, + +/* { &hf_sna_ru, + { "Request/Response Unit", "sna.ru", FT_NONE, BASE_NONE, + NULL, 0x0, NULL, HFILL }},*/ + + { &hf_sna_gds, + { "GDS Variable", "sna.gds", FT_NONE, BASE_NONE, NULL, 0x0, + NULL, HFILL }}, + + { &hf_sna_gds_len, + { "GDS Variable Length", "sna.gds.len", FT_UINT16, BASE_DEC, + NULL, 0x7fff, NULL, HFILL }}, + + { &hf_sna_gds_cont, + { "Continuation Flag", "sna.gds.cont", FT_BOOLEAN, 16, NULL, + 0x8000, NULL, HFILL }}, + + { &hf_sna_gds_type, + { "Type of Variable", "sna.gds.type", FT_UINT16, BASE_HEX, + VALS(sna_gds_var_vals), 0x0, NULL, HFILL }}, + + { &hf_sna_gds_info, + { "Information", "sna.gds.info", FT_BYTES, BASE_NONE, + NULL, 0x0, NULL, HFILL }}, + +#if 0 + { &hf_sna_xid, + { "XID", "sna.xid", FT_NONE, BASE_NONE, NULL, 0x0, + "XID Frame", HFILL }}, +#endif + + { &hf_sna_xid_0, + { "XID Byte 0", "sna.xid.0", FT_UINT8, BASE_HEX, NULL, 0x0, + NULL, HFILL }}, + + { &hf_sna_xid_format, + { "XID Format", "sna.xid.format", FT_UINT8, BASE_DEC, NULL, + 0xf0, NULL, HFILL }}, + + { &hf_sna_xid_type, + { "XID Type", "sna.xid.type", FT_UINT8, BASE_DEC, + VALS(sna_xid_type_vals), 0x0f, NULL, HFILL }}, + + { &hf_sna_xid_len, + { "XID Length", "sna.xid.len", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL }}, + + { &hf_sna_xid_id, + { "Node Identification", "sna.xid.id", FT_UINT32, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_xid_idblock, + { "ID Block", "sna.xid.idblock", FT_UINT32, BASE_HEX, NULL, + 0xfff00000, NULL, HFILL }}, + + { &hf_sna_xid_idnum, + { "ID Number", "sna.xid.idnum", FT_UINT32, BASE_HEX, NULL, + 0x0fffff, NULL, HFILL }}, + + { &hf_sna_xid_3_8, + { "Characteristics of XID sender", "sna.xid.type3.8", FT_UINT16, + BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_xid_3_init_self, + { "INIT-SELF support", "sna.xid.type3.initself", + FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL }}, + + { &hf_sna_xid_3_stand_bind, + { "Stand-Alone BIND Support", "sna.xid.type3.stand_bind", + FT_BOOLEAN, 16, NULL, 0x4000, NULL, HFILL }}, + + { &hf_sna_xid_3_gener_bind, + { "Whole BIND PIU generated indicator", + "sna.xid.type3.gener_bind", FT_BOOLEAN, 16, NULL, 0x2000, + "Whole BIND PIU generated", HFILL }}, + + { &hf_sna_xid_3_recve_bind, + { "Whole BIND PIU required indicator", + "sna.xid.type3.recve_bind", FT_BOOLEAN, 16, NULL, 0x1000, + "Whole BIND PIU required", HFILL }}, + + { &hf_sna_xid_3_actpu, + { "ACTPU suppression indicator", "sna.xid.type3.actpu", + FT_BOOLEAN, 16, NULL, 0x0080, NULL, HFILL }}, + + { &hf_sna_xid_3_nwnode, + { "Sender is network node", "sna.xid.type3.nwnode", + FT_BOOLEAN, 16, NULL, 0x0040, NULL, HFILL }}, + + { &hf_sna_xid_3_cp, + { "Control Point Services", "sna.xid.type3.cp", + FT_BOOLEAN, 16, NULL, 0x0020, NULL, HFILL }}, + + { &hf_sna_xid_3_cpcp, + { "CP-CP session support", "sna.xid.type3.cpcp", + FT_BOOLEAN, 16, NULL, 0x0010, NULL, HFILL }}, + + { &hf_sna_xid_3_state, + { "XID exchange state indicator", "sna.xid.type3.state", + FT_UINT16, BASE_HEX, VALS(sna_xid_3_state_vals), + 0x000c, NULL, HFILL }}, + + { &hf_sna_xid_3_nonact, + { "Nonactivation Exchange", "sna.xid.type3.nonact", + FT_BOOLEAN, 16, NULL, 0x0002, NULL, HFILL }}, + + { &hf_sna_xid_3_cpchange, + { "CP name change support", "sna.xid.type3.cpchange", + FT_BOOLEAN, 16, NULL, 0x0001, NULL, HFILL }}, + + { &hf_sna_xid_3_10, + { "XID Type 3 Byte 10", "sna.xid.type3.10", FT_UINT8, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_xid_3_asend_bind, + { "Adaptive BIND pacing support as sender", + "sna.xid.type3.asend_bind", FT_BOOLEAN, 8, NULL, 0x80, + "Pacing support as sender", HFILL }}, + + { &hf_sna_xid_3_arecv_bind, + { "Adaptive BIND pacing support as receiver", + "sna.xid.type3.asend_recv", FT_BOOLEAN, 8, NULL, 0x40, + "Pacing support as receive", HFILL }}, + + { &hf_sna_xid_3_quiesce, + { "Quiesce TG Request", + "sna.xid.type3.quiesce", FT_BOOLEAN, 8, NULL, 0x20, + NULL, HFILL }}, + + { &hf_sna_xid_3_pucap, + { "PU Capabilities", + "sna.xid.type3.pucap", FT_BOOLEAN, 8, NULL, 0x10, + NULL, HFILL }}, + + { &hf_sna_xid_3_pbn, + { "Peripheral Border Node", + "sna.xid.type3.pbn", FT_BOOLEAN, 8, NULL, 0x08, + NULL, HFILL }}, + + { &hf_sna_xid_3_pacing, + { "Qualifier for adaptive BIND pacing support", + "sna.xid.type3.pacing", FT_UINT8, BASE_HEX, NULL, 0x03, + NULL, HFILL }}, + + { &hf_sna_xid_3_11, + { "XID Type 3 Byte 11", "sna.xid.type3.11", FT_UINT8, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_xid_3_tgshare, + { "TG Sharing Prohibited Indicator", + "sna.xid.type3.tgshare", FT_BOOLEAN, 8, NULL, 0x40, + NULL, HFILL }}, + + { &hf_sna_xid_3_dedsvc, + { "Dedicated SVC Indicator", + "sna.xid.type3.dedsvc", FT_BOOLEAN, 8, NULL, 0x20, + NULL, HFILL }}, + + { &hf_sna_xid_3_12, + { "XID Type 3 Byte 12", "sna.xid.type3.12", FT_UINT8, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_xid_3_negcsup, + { "Negotiation Complete Supported", + "sna.xid.type3.negcsup", FT_BOOLEAN, 8, NULL, 0x80, + NULL, HFILL }}, + + { &hf_sna_xid_3_negcomp, + { "Negotiation Complete", + "sna.xid.type3.negcomp", FT_BOOLEAN, 8, NULL, 0x40, + NULL, HFILL }}, + + { &hf_sna_xid_3_15, + { "XID Type 3 Byte 15", "sna.xid.type3.15", FT_UINT8, BASE_HEX, + NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_xid_3_partg, + { "Parallel TG Support", + "sna.xid.type3.partg", FT_BOOLEAN, 8, NULL, 0x80, + NULL, HFILL }}, + + { &hf_sna_xid_3_dlur, + { "Dependent LU Requester Indicator", + "sna.xid.type3.dlur", FT_BOOLEAN, 8, NULL, 0x40, + NULL, HFILL }}, + + { &hf_sna_xid_3_dlus, + { "DLUS Served LU Registration Indicator", + "sna.xid.type3.dlus", FT_BOOLEAN, 8, NULL, 0x20, + NULL, HFILL }}, + + { &hf_sna_xid_3_exbn, + { "Extended HPR Border Node", + "sna.xid.type3.exbn", FT_BOOLEAN, 8, NULL, 0x10, + NULL, HFILL }}, + + { &hf_sna_xid_3_genodai, + { "Generalized ODAI Usage Option", + "sna.xid.type3.genodai", FT_BOOLEAN, 8, NULL, 0x08, + NULL, HFILL }}, + + { &hf_sna_xid_3_branch, + { "Branch Indicator", "sna.xid.type3.branch", + FT_UINT8, BASE_HEX, VALS(sna_xid_3_branch_vals), + 0x06, NULL, HFILL }}, + + { &hf_sna_xid_3_brnn, + { "Option Set 1123 Indicator", + "sna.xid.type3.brnn", FT_BOOLEAN, 8, NULL, 0x01, + NULL, HFILL }}, + + { &hf_sna_xid_3_tg, + { "XID TG", "sna.xid.type3.tg", FT_UINT8, BASE_HEX, NULL, 0x0, + NULL, HFILL }}, + + { &hf_sna_xid_3_dlc, + { "XID DLC", "sna.xid.type3.dlc", FT_UINT8, BASE_HEX, NULL, 0x0, + NULL, HFILL }}, + + { &hf_sna_xid_3_dlen, + { "DLC Dependent Section Length", "sna.xid.type3.dlen", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_control_len, + { "Control Vector Length", "sna.control.len", + FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_control_key, + { "Control Vector Key", "sna.control.key", + FT_UINT8, BASE_HEX, VALS(sna_control_vals), 0x0, NULL, + HFILL }}, + + { &hf_sna_control_hprkey, + { "Control Vector HPR Key", "sna.control.hprkey", + FT_UINT8, BASE_HEX, VALS(sna_control_hpr_vals), 0x0, NULL, + HFILL }}, + + { &hf_sna_control_05_delay, + { "Channel Delay", "sna.control.05.delay", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_control_05_type, + { "Network Address Type", "sna.control.05.type", + FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, + + { &hf_sna_control_05_ptp, + { "Point-to-point", "sna.control.05.ptp", + FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL }}, + + { &hf_sna_control_0e_type, + { "Type", "sna.control.0e.type", + FT_UINT8, BASE_HEX, VALS(sna_control_0e_type_vals), + 0, NULL, HFILL }}, + + { &hf_sna_control_0e_value, + { "Value", "sna.control.0e.value", + FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL }}, + + { &hf_sna_padding, + { "Padding", "sna.padding", + FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }}, + + { &hf_sna_reserved, + { "Reserved", "sna.reserved", + FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }}, + + { &hf_sna_biu_segment_data, + { "BIU segment data", "sna.biu_segment_data", + FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }}, + + }; + static gint *ett[] = { + &ett_sna, + &ett_sna_th, + &ett_sna_th_fid, + &ett_sna_nlp_nhdr, + &ett_sna_nlp_nhdr_0, + &ett_sna_nlp_nhdr_1, + &ett_sna_nlp_thdr, + &ett_sna_nlp_thdr_8, + &ett_sna_nlp_thdr_9, + &ett_sna_nlp_opti_un, + &ett_sna_nlp_opti_0d, + &ett_sna_nlp_opti_0d_4, + &ett_sna_nlp_opti_0e, + &ett_sna_nlp_opti_0e_stat, + &ett_sna_nlp_opti_0e_absp, + &ett_sna_nlp_opti_0f, + &ett_sna_nlp_opti_10, + &ett_sna_nlp_opti_12, + &ett_sna_nlp_opti_14, + &ett_sna_nlp_opti_14_si, + &ett_sna_nlp_opti_14_si_2, + &ett_sna_nlp_opti_14_rr, + &ett_sna_nlp_opti_14_rr_2, + &ett_sna_nlp_opti_22, + &ett_sna_nlp_opti_22_2, + &ett_sna_nlp_opti_22_3, + &ett_sna_rh, + &ett_sna_rh_0, + &ett_sna_rh_1, + &ett_sna_rh_2, + &ett_sna_gds, + &ett_sna_xid_0, + &ett_sna_xid_id, + &ett_sna_xid_3_8, + &ett_sna_xid_3_10, + &ett_sna_xid_3_11, + &ett_sna_xid_3_12, + &ett_sna_xid_3_15, + &ett_sna_control_un, + &ett_sna_control_05, + &ett_sna_control_05hpr, + &ett_sna_control_05hpr_type, + &ett_sna_control_0e, + }; + module_t *sna_module; + + proto_sna = proto_register_protocol("Systems Network Architecture", + "SNA", "sna"); + proto_register_field_array(proto_sna, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + sna_handle = register_dissector("sna", dissect_sna, proto_sna); + + proto_sna_xid = proto_register_protocol("Systems Network Architecture XID", "SNA XID", "sna_xid"); + sna_xid_handle = register_dissector("sna_xid", dissect_sna_xid, proto_sna_xid); + + sna_address_type = address_type_dissector_register("AT_SNA", "SNA Address", sna_fid_to_str_buf, sna_address_str_len, NULL, NULL, NULL, NULL, NULL); + + /* Register configuration options */ + sna_module = prefs_register_protocol(proto_sna, NULL); + prefs_register_bool_preference(sna_module, "defragment", + "Reassemble fragmented BIUs", + "Whether fragmented BIUs should be reassembled", + &sna_defragment); + + reassembly_table_register(&sna_reassembly_table, + &addresses_reassembly_table_functions); +} + +void +proto_reg_handoff_sna(void) +{ + dissector_add_uint("llc.dsap", SAP_SNA_PATHCTRL, sna_handle); + dissector_add_uint("llc.dsap", SAP_SNA1, sna_handle); + dissector_add_uint("llc.dsap", SAP_SNA2, sna_handle); + dissector_add_uint("llc.dsap", SAP_SNA3, sna_handle); + dissector_add_uint("llc.dsap", SAP_SNA4, sna_handle); + dissector_add_uint("llc.xid_dsap", SAP_SNA_PATHCTRL, sna_xid_handle); + dissector_add_uint("llc.xid_dsap", SAP_SNA1, sna_xid_handle); + dissector_add_uint("llc.xid_dsap", SAP_SNA2, sna_xid_handle); + dissector_add_uint("llc.xid_dsap", SAP_SNA3, sna_xid_handle); + /* RFC 2043 */ + dissector_add_uint("ppp.protocol", PPP_SNA, sna_handle); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: t + * End: + * + * vi: set shiftwidth=8 tabstop=8 noexpandtab: + * :indentSize=8:tabSize=8:noTabs=false: + */ |