/* packet-opa-snc.c * Routines for Omni-Path SnC header dissection * Copyright (c) 2016, Intel Corporation. * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include #include void proto_reg_handoff_opa_snc(void); void proto_register_opa_snc(void); static const value_string vals_opa_snc_direction[] = { { 0, "Outbound" }, { 1, "Inbound" }, { 2, "Internal Debugging Tool" }, { 0, NULL } }; /* PBC */ static const true_false_string tfs_opa_snc_pbc_isBypass = { "Bypass (8B/10B/16B) Packet", "9B Packet" }; static const value_string vals_opa_snc_pbc_insertHcrc[] = { { 0x0, "KDETH Hcrc calculated assuming GRH is not present" }, { 0x1, "KDETH Hcrc calculated assuming GRH is present" }, { 0x2, "KDETH Hcrc is not inserted" }, { 0x3, "Reserved" }, { 0, NULL } }; /* RHF */ static const value_string vals_opa_snc_rhf_rcvtypeerr[] = { { 0x0, "No Error" }, { 0x1, "OpCode Error" }, { 0x2, "KDETH Min Length Error" }, { 0x3, "KDETH Hcrc Error" }, { 0x4, "KDETH Version Error" }, { 0x5, "Context Error" }, { 0x6, "KDETH TID Error" }, { 0x7, "Reserved" }, { 0, NULL } }; static const value_string vals_opa_snc_rhf_rcvtype[] = { { 0, "Expected Receive" }, { 1, "Eager Receive" }, { 2, "IB" }, { 3, "error" }, { 4, "bypass" }, { 0, NULL } }; /* Wireshark ID */ static gint proto_opa_snc = -1; /* Variables to hold expansion values between packets */ static gint ett_snc = -1; static gint ett_sncpbc = -1; static gint ett_sncrhf = -1; /* SnC Fields */ static gint hf_opa_snc_direction = -1; static gint hf_opa_snc_portnumber = -1; static gint hf_opa_snc_Reserved16 = -1; static gint hf_opa_snc_Reserved32 = -1; static gint hf_opa_snc_Reserved64 = -1; static gint hf_opa_snc_pbc_reserved_63_48 = -1; static gint hf_opa_snc_pbc_pbcstaticratecontrolcnt = -1; static gint hf_opa_snc_pbc_pbcintr = -1; static gint hf_opa_snc_pbc_pbcdcinfo = -1; static gint hf_opa_snc_pbc_pbctestebp = -1; static gint hf_opa_snc_pbc_pbcpacketbypass = -1; static gint hf_opa_snc_pbc_pbcinserthcrc = -1; static gint hf_opa_snc_pbc_pbccreditreturn = -1; static gint hf_opa_snc_pbc_pbcinsertbypassicrc = -1; static gint hf_opa_snc_pbc_pbctestbadicrc = -1; static gint hf_opa_snc_pbc_pbcfecn = -1; static gint hf_opa_snc_pbc_reserved_21_16 = -1; static gint hf_opa_snc_pbc_pbcvl = -1; static gint hf_opa_snc_pbc_pbclengthdws = -1; static const gint *_snc_pbc_1[] = { &hf_opa_snc_pbc_reserved_63_48, &hf_opa_snc_pbc_pbcstaticratecontrolcnt, NULL }; static const gint *_snc_pbc_2[] = { &hf_opa_snc_pbc_pbcintr, &hf_opa_snc_pbc_pbcdcinfo, &hf_opa_snc_pbc_pbctestebp, &hf_opa_snc_pbc_pbcpacketbypass, &hf_opa_snc_pbc_pbcinserthcrc, &hf_opa_snc_pbc_pbccreditreturn, &hf_opa_snc_pbc_pbcinsertbypassicrc, &hf_opa_snc_pbc_pbctestbadicrc, &hf_opa_snc_pbc_pbcfecn, &hf_opa_snc_pbc_reserved_21_16, &hf_opa_snc_pbc_pbcvl, &hf_opa_snc_pbc_pbclengthdws, NULL }; static gint hf_opa_snc_rhf_icrcerr = -1; static gint hf_opa_snc_rhf_reserved_62 = -1; static gint hf_opa_snc_rhf_eccerr = -1; static gint hf_opa_snc_rhf_lenerr = -1; static gint hf_opa_snc_rhf_tiderr = -1; static gint hf_opa_snc_rhf_rcvtypeerr = -1; static gint hf_opa_snc_rhf_dcerr = -1; static gint hf_opa_snc_rhf_dcuncerr = -1; static gint hf_opa_snc_rhf_khdrlenerr = -1; static gint hf_opa_snc_rhf_hdrqoffset = -1; static gint hf_opa_snc_rhf_egroffset = -1; static gint hf_opa_snc_rhf_rcvseq = -1; static gint hf_opa_snc_rhf_dcinfo = -1; static gint hf_opa_snc_rhf_egrindex = -1; static gint hf_opa_snc_rhf_useegrbfr = -1; static gint hf_opa_snc_rhf_rcvtype = -1; static gint hf_opa_snc_rhf_pktlen = -1; static const gint *_snc_rhf_1[] = { &hf_opa_snc_rhf_icrcerr, &hf_opa_snc_rhf_reserved_62, &hf_opa_snc_rhf_eccerr, &hf_opa_snc_rhf_lenerr, &hf_opa_snc_rhf_tiderr, &hf_opa_snc_rhf_rcvtypeerr, &hf_opa_snc_rhf_dcerr, &hf_opa_snc_rhf_dcuncerr, &hf_opa_snc_rhf_khdrlenerr, &hf_opa_snc_rhf_hdrqoffset, &hf_opa_snc_rhf_egroffset, NULL }; static const gint *_snc_rhf_2[] = { &hf_opa_snc_rhf_rcvseq, &hf_opa_snc_rhf_dcinfo, &hf_opa_snc_rhf_egrindex, &hf_opa_snc_rhf_useegrbfr, &hf_opa_snc_rhf_rcvtype, &hf_opa_snc_rhf_pktlen, NULL }; static expert_field ei_opa_snc_nobypass = EI_INIT; static void cf_opa_snc_dw_to_b(gchar *buf, guint32 value) { g_snprintf(buf, ITEM_LABEL_LENGTH, "%u DWORDS, %u Bytes", value, value * 4); } static void cf_opa_snc_qw_to_b(gchar *buf, guint32 value) { g_snprintf(buf, ITEM_LABEL_LENGTH, "%u QWORDS, %u Bytes", value, value * 8); } /* Dissector Declarations */ static dissector_handle_t opa_snc_handle; static dissector_handle_t opa_9b_handle; static int dissect_opa_snc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { gint offset = 0; /* Current Offset */ gboolean isBypass = TRUE; /* Tracks if we are parsing a bypass packet or Not */ guint8 Direction = tvb_get_guint8(tvb, offset + 1); guint64 RHF_PBC; proto_item *SnC_item; proto_tree * SnC_tree,*PBC_tree,*RHF_tree; col_set_str(pinfo->cinfo, COL_PROTOCOL, "Omni-Path"); col_clear(pinfo->cinfo, COL_INFO); tree = proto_tree_get_parent_tree(tree); SnC_item = proto_tree_add_item(tree, proto_opa_snc, tvb, offset, 16, ENC_NA); SnC_tree = proto_item_add_subtree(SnC_item, ett_snc); proto_tree_add_item(SnC_tree, hf_opa_snc_portnumber, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset += 1; proto_tree_add_item(SnC_tree, hf_opa_snc_direction, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset += 1; proto_tree_add_item(SnC_tree, hf_opa_snc_Reserved16, tvb, offset, 2, ENC_NA); offset += 2; proto_tree_add_item(SnC_tree, hf_opa_snc_Reserved32, tvb, offset, 4, ENC_NA); offset += 4; RHF_PBC = tvb_get_letoh64(tvb, offset); switch (Direction) { case 0: PBC_tree = proto_tree_add_subtree(SnC_tree, tvb, offset, 8, ett_sncpbc, NULL, "PBC - Per Buffer Control"); proto_tree_add_bitmask_list(PBC_tree, tvb, offset + 4, 4, _snc_pbc_1, ENC_LITTLE_ENDIAN); proto_tree_add_bitmask_list(PBC_tree, tvb, offset, 4, _snc_pbc_2, ENC_LITTLE_ENDIAN); isBypass = (((RHF_PBC >> 28) & 1) == 1); break; case 1: RHF_tree = proto_tree_add_subtree(SnC_tree, tvb, offset, 8, ett_sncrhf, NULL, "RHF - Receive Header Flags"); proto_tree_add_bitmask_list(RHF_tree, tvb, offset + 4, 4, _snc_rhf_1, ENC_LITTLE_ENDIAN); proto_tree_add_bitmask_list(RHF_tree, tvb, offset, 4, _snc_rhf_2, ENC_LITTLE_ENDIAN); isBypass = (((RHF_PBC >> 12) & 7) == 4); break; case 2: /* For use with internal debugging tools */ proto_tree_add_item(SnC_tree, hf_opa_snc_Reserved64, tvb, offset, 8, ENC_NA); isBypass = FALSE; break; default: isBypass = FALSE; } offset += 8; if (isBypass) { /* Bypass packets not implemented in this version */ expert_add_info(pinfo, NULL, &ei_opa_snc_nobypass); } else { call_dissector(opa_9b_handle, tvb_new_subset_remaining(tvb, offset), pinfo, tree); } return tvb_captured_length(tvb); } void proto_register_opa_snc(void) { expert_module_t *expert_opa_snc; static hf_register_info hf[] = { { &hf_opa_snc_direction, { "Direction", "opa.snc.direction", FT_UINT8, BASE_HEX, VALS(vals_opa_snc_direction), 0x0, NULL, HFILL } }, { &hf_opa_snc_portnumber, { "Port Number", "opa.snc.portnumber", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_opa_snc_Reserved32, { "Reserved (32 bits)", "opa.snc.reserved32", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_opa_snc_Reserved64, { "Reserved (64 bits)", "opa.snc.reserved64", FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_opa_snc_Reserved16, { "Reserved (16 bits)", "opa.snc.reserved16", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, { &hf_opa_snc_pbc_reserved_63_48, { "Reserved (16 bits)", "opa.snc.pbc.reserved_63_48", FT_UINT32, BASE_HEX, NULL, 0xFFFF0000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcstaticratecontrolcnt, { "Static Rate Control Counter", "opa.snc.pbc.pbcstaticratecontrolcnt", FT_UINT32, BASE_HEX, NULL, 0x0000FFFF, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcintr, { "Interrupt", "opa.snc.pbc.pbcintr", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x80000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcdcinfo, { "DC Info", "opa.snc.pbc.pbcdcinfo", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x40000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbctestebp, { "Test End Bad Packet", "opa.snc.pbc.pbctestebp", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x20000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcpacketbypass, { "Packet Type", "opa.snc.pbc.pbcpacketbypass", FT_BOOLEAN, 32, TFS(&tfs_opa_snc_pbc_isBypass), 0x10000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcinserthcrc, { "Insert Hcrc", "opa.snc.pbc.pbcinserthcrc", FT_UINT32, BASE_HEX, VALS(vals_opa_snc_pbc_insertHcrc), 0x0C000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbccreditreturn, { "Request Credit Return", "opa.snc.pbc.pbccreditreturn", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x02000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcinsertbypassicrc, { "Insert ICRC for bypass packets", "opa.snc.pbc.pbcinsertbypassicrc", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x01000000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbctestbadicrc, { "Insert a bad ICRC", "opa.snc.pbc.pbctestbadicrc", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x00800000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcfecn, { "Set FECN bit", "opa.snc.pbc.pbcfecn", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x00400000, NULL, HFILL } }, { &hf_opa_snc_pbc_reserved_21_16, { "Reserved (6 bits)", "opa.snc.pbc.reserved_21_16", FT_UINT32, BASE_HEX, NULL, 0x003F0000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbcvl, { "VL", "opa.snc.pbc.pbcvl", FT_UINT32, BASE_DEC, NULL, 0x0000F000, NULL, HFILL } }, { &hf_opa_snc_pbc_pbclengthdws, { "pbclengthdws", "opa.snc.pbc.pbclengthdws", FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_dw_to_b), 0x00000FFF, NULL, HFILL } }, { &hf_opa_snc_rhf_icrcerr, { "ICRC error", "opa.snc.rhf.icrcerr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x80000000, NULL, HFILL } }, { &hf_opa_snc_rhf_reserved_62, { "Reserved (1 bit)", "opa.snc.rhf.reserved_62", FT_UINT32, BASE_HEX, NULL, 0x40000000, NULL, HFILL } }, { &hf_opa_snc_rhf_eccerr, { "Internal memory Uncorrectable error", "opa.snc.rhf.eccerr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x200000000, NULL, HFILL } }, { &hf_opa_snc_rhf_lenerr, { "Length Error", "opa.snc.rhf.lenerr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x10000000, NULL, HFILL } }, { &hf_opa_snc_rhf_tiderr, { "TID Error", "opa.snc.rhf.tiderr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x08000000, NULL, HFILL } }, { &hf_opa_snc_rhf_rcvtypeerr, { "Receive Type Error", "opa.snc.rhf.rcvtypeerr", FT_UINT32, BASE_HEX, VALS(vals_opa_snc_rhf_rcvtypeerr), 0x07000000, NULL, HFILL } }, { &hf_opa_snc_rhf_dcerr, { "End Bad Packet Error", "opa.snc.rhf.dcerr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x00800000, NULL, HFILL } }, { &hf_opa_snc_rhf_dcuncerr, { "Uncorrectable or parity error", "opa.snc.rhf.dcuncerr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x00400000, NULL, HFILL } }, { &hf_opa_snc_rhf_khdrlenerr, { "KDETH Length Error", "opa.snc.rhf.khdrlenerr", FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x00200000, NULL, HFILL } }, { &hf_opa_snc_rhf_hdrqoffset, { "Receive Header Offset", "opa.snc.rhf.hdrqoffset", FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_dw_to_b), 0x001FF000, NULL, HFILL } }, { &hf_opa_snc_rhf_egroffset, { "Eager Buffer Offset", "opa.snc.rhf.egroffset", FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_qw_to_b), 0x00000FFF, NULL, HFILL } }, { &hf_opa_snc_rhf_rcvseq, { "Receive Sequence", "opa.snc.rhf.rcvseq", FT_UINT32, BASE_DEC, NULL, 0xF0000000, NULL, HFILL } }, { &hf_opa_snc_rhf_dcinfo, { "DC Info", "opa.snc.rhf.dcinfo", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x08000000, NULL, HFILL } }, { &hf_opa_snc_rhf_egrindex, { "Eager Buffer Index", "opa.snc.rhf.egrindex", FT_UINT32, BASE_HEX, NULL, 0x07FF0000, NULL, HFILL } }, { &hf_opa_snc_rhf_useegrbfr, { "Use Eager Buffer", "opa.snc.rhf.useegrbfr", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x00008000, NULL, HFILL } }, { &hf_opa_snc_rhf_rcvtype, { "Packet Receive Type", "opa.snc.rhf.rcvtype", FT_UINT32, BASE_DEC_HEX, VALS(vals_opa_snc_rhf_rcvtype), 0x00007000, NULL, HFILL } }, { &hf_opa_snc_rhf_pktlen, { "Packet Length", "opa.snc.rhf.pktlen", FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_dw_to_b), 0x00000FFF, NULL, HFILL } } }; static gint *ett[] = { &ett_snc, &ett_sncpbc, &ett_sncrhf, }; static ei_register_info ei[] = { { &ei_opa_snc_nobypass, { "opa.snc.nobypass", PI_PROTOCOL, PI_WARN, "Bypass packets not implemented in this version", EXPFILL } } }; proto_opa_snc = proto_register_protocol( "Intel Omni-Path SnC - Omni-Path Snoop and Capture MetaData Header", "OPA SnC", "opa.snc"); opa_snc_handle = register_dissector("opa.snc", dissect_opa_snc, proto_opa_snc); proto_register_field_array(proto_opa_snc, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_opa_snc = expert_register_protocol(proto_opa_snc); expert_register_field_array(expert_opa_snc, ei, array_length(ei)); } void proto_reg_handoff_opa_snc(void) { opa_9b_handle = find_dissector("opa"); /* announce an anonymous Omni-Path SnC dissector */ dissector_add_uint("erf.types.type", ERF_TYPE_OPA_SNC, opa_snc_handle); } /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */