421 lines
15 KiB
C
421 lines
15 KiB
C
/* packet-opa-snc.c
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* Routines for Omni-Path SnC header dissection
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* Copyright (c) 2016, Intel Corporation.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include <wiretap/erf_record.h>
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void proto_reg_handoff_opa_snc(void);
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void proto_register_opa_snc(void);
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static const value_string vals_opa_snc_direction[] = {
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{ 0, "Outbound" },
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{ 1, "Inbound" },
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{ 2, "Internal Debugging Tool" },
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{ 0, NULL }
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};
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/* PBC */
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static const true_false_string tfs_opa_snc_pbc_isBypass = {
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"Bypass (8B/10B/16B) Packet",
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"9B Packet"
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};
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static const value_string vals_opa_snc_pbc_insertHcrc[] = {
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{ 0x0, "KDETH Hcrc calculated assuming GRH is not present" },
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{ 0x1, "KDETH Hcrc calculated assuming GRH is present" },
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{ 0x2, "KDETH Hcrc is not inserted" },
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{ 0x3, "Reserved" },
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{ 0, NULL }
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};
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/* RHF */
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static const value_string vals_opa_snc_rhf_rcvtypeerr[] = {
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{ 0x0, "No Error" },
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{ 0x1, "OpCode Error" },
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{ 0x2, "KDETH Min Length Error" },
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{ 0x3, "KDETH Hcrc Error" },
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{ 0x4, "KDETH Version Error" },
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{ 0x5, "Context Error" },
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{ 0x6, "KDETH TID Error" },
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{ 0x7, "Reserved" },
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{ 0, NULL }
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};
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static const value_string vals_opa_snc_rhf_rcvtype[] = {
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{ 0, "Expected Receive" },
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{ 1, "Eager Receive" },
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{ 2, "IB" },
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{ 3, "error" },
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{ 4, "bypass" },
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{ 0, NULL }
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};
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/* Wireshark ID */
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static gint proto_opa_snc = -1;
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/* Variables to hold expansion values between packets */
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static gint ett_snc = -1;
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static gint ett_sncpbc = -1;
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static gint ett_sncrhf = -1;
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/* SnC Fields */
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static gint hf_opa_snc_direction = -1;
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static gint hf_opa_snc_portnumber = -1;
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static gint hf_opa_snc_Reserved16 = -1;
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static gint hf_opa_snc_Reserved32 = -1;
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static gint hf_opa_snc_Reserved64 = -1;
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static gint hf_opa_snc_pbc_reserved_63_48 = -1;
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static gint hf_opa_snc_pbc_pbcstaticratecontrolcnt = -1;
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static gint hf_opa_snc_pbc_pbcintr = -1;
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static gint hf_opa_snc_pbc_pbcdcinfo = -1;
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static gint hf_opa_snc_pbc_pbctestebp = -1;
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static gint hf_opa_snc_pbc_pbcpacketbypass = -1;
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static gint hf_opa_snc_pbc_pbcinserthcrc = -1;
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static gint hf_opa_snc_pbc_pbccreditreturn = -1;
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static gint hf_opa_snc_pbc_pbcinsertbypassicrc = -1;
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static gint hf_opa_snc_pbc_pbctestbadicrc = -1;
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static gint hf_opa_snc_pbc_pbcfecn = -1;
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static gint hf_opa_snc_pbc_reserved_21_16 = -1;
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static gint hf_opa_snc_pbc_pbcvl = -1;
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static gint hf_opa_snc_pbc_pbclengthdws = -1;
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static int * const _snc_pbc_1[] = {
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&hf_opa_snc_pbc_reserved_63_48,
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&hf_opa_snc_pbc_pbcstaticratecontrolcnt,
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NULL
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};
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static int * const _snc_pbc_2[] = {
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&hf_opa_snc_pbc_pbcintr,
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&hf_opa_snc_pbc_pbcdcinfo,
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&hf_opa_snc_pbc_pbctestebp,
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&hf_opa_snc_pbc_pbcpacketbypass,
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&hf_opa_snc_pbc_pbcinserthcrc,
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&hf_opa_snc_pbc_pbccreditreturn,
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&hf_opa_snc_pbc_pbcinsertbypassicrc,
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&hf_opa_snc_pbc_pbctestbadicrc,
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&hf_opa_snc_pbc_pbcfecn,
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&hf_opa_snc_pbc_reserved_21_16,
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&hf_opa_snc_pbc_pbcvl,
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&hf_opa_snc_pbc_pbclengthdws,
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NULL
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};
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static gint hf_opa_snc_rhf_icrcerr = -1;
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static gint hf_opa_snc_rhf_reserved_62 = -1;
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static gint hf_opa_snc_rhf_eccerr = -1;
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static gint hf_opa_snc_rhf_lenerr = -1;
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static gint hf_opa_snc_rhf_tiderr = -1;
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static gint hf_opa_snc_rhf_rcvtypeerr = -1;
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static gint hf_opa_snc_rhf_dcerr = -1;
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static gint hf_opa_snc_rhf_dcuncerr = -1;
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static gint hf_opa_snc_rhf_khdrlenerr = -1;
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static gint hf_opa_snc_rhf_hdrqoffset = -1;
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static gint hf_opa_snc_rhf_egroffset = -1;
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static gint hf_opa_snc_rhf_rcvseq = -1;
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static gint hf_opa_snc_rhf_dcinfo = -1;
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static gint hf_opa_snc_rhf_egrindex = -1;
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static gint hf_opa_snc_rhf_useegrbfr = -1;
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static gint hf_opa_snc_rhf_rcvtype = -1;
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static gint hf_opa_snc_rhf_pktlen = -1;
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static int * const _snc_rhf_1[] = {
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&hf_opa_snc_rhf_icrcerr,
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&hf_opa_snc_rhf_reserved_62,
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&hf_opa_snc_rhf_eccerr,
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&hf_opa_snc_rhf_lenerr,
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&hf_opa_snc_rhf_tiderr,
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&hf_opa_snc_rhf_rcvtypeerr,
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&hf_opa_snc_rhf_dcerr,
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&hf_opa_snc_rhf_dcuncerr,
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&hf_opa_snc_rhf_khdrlenerr,
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&hf_opa_snc_rhf_hdrqoffset,
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&hf_opa_snc_rhf_egroffset,
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NULL
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};
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static int * const _snc_rhf_2[] = {
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&hf_opa_snc_rhf_rcvseq,
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&hf_opa_snc_rhf_dcinfo,
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&hf_opa_snc_rhf_egrindex,
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&hf_opa_snc_rhf_useegrbfr,
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&hf_opa_snc_rhf_rcvtype,
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&hf_opa_snc_rhf_pktlen,
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NULL
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};
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static expert_field ei_opa_snc_nobypass = EI_INIT;
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static void cf_opa_snc_dw_to_b(gchar *buf, guint32 value)
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{
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g_snprintf(buf, ITEM_LABEL_LENGTH, "%u DWORDS, %u Bytes", value, value * 4);
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}
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static void cf_opa_snc_qw_to_b(gchar *buf, guint32 value)
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{
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g_snprintf(buf, ITEM_LABEL_LENGTH, "%u QWORDS, %u Bytes", value, value * 8);
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}
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/* Dissector Declarations */
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static dissector_handle_t opa_snc_handle;
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static dissector_handle_t opa_9b_handle;
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static int dissect_opa_snc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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gint offset = 0; /* Current Offset */
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gboolean isBypass = TRUE; /* Tracks if we are parsing a bypass packet or Not */
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guint8 Direction = tvb_get_guint8(tvb, offset + 1);
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guint64 RHF_PBC;
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proto_item *SnC_item;
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proto_tree * SnC_tree,*PBC_tree,*RHF_tree;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "Omni-Path");
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col_clear(pinfo->cinfo, COL_INFO);
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tree = proto_tree_get_parent_tree(tree);
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SnC_item = proto_tree_add_item(tree, proto_opa_snc, tvb, offset, 16, ENC_NA);
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SnC_tree = proto_item_add_subtree(SnC_item, ett_snc);
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proto_tree_add_item(SnC_tree, hf_opa_snc_portnumber, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset += 1;
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proto_tree_add_item(SnC_tree, hf_opa_snc_direction, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset += 1;
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proto_tree_add_item(SnC_tree, hf_opa_snc_Reserved16, tvb, offset, 2, ENC_NA);
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offset += 2;
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proto_tree_add_item(SnC_tree, hf_opa_snc_Reserved32, tvb, offset, 4, ENC_NA);
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offset += 4;
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RHF_PBC = tvb_get_letoh64(tvb, offset);
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switch (Direction) {
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case 0:
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PBC_tree = proto_tree_add_subtree(SnC_tree, tvb, offset, 8, ett_sncpbc, NULL, "PBC - Per Buffer Control");
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proto_tree_add_bitmask_list(PBC_tree, tvb, offset + 4, 4, _snc_pbc_1, ENC_LITTLE_ENDIAN);
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proto_tree_add_bitmask_list(PBC_tree, tvb, offset, 4, _snc_pbc_2, ENC_LITTLE_ENDIAN);
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isBypass = (((RHF_PBC >> 28) & 1) == 1);
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break;
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case 1:
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RHF_tree = proto_tree_add_subtree(SnC_tree, tvb, offset, 8, ett_sncrhf, NULL, "RHF - Receive Header Flags");
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proto_tree_add_bitmask_list(RHF_tree, tvb, offset + 4, 4, _snc_rhf_1, ENC_LITTLE_ENDIAN);
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proto_tree_add_bitmask_list(RHF_tree, tvb, offset, 4, _snc_rhf_2, ENC_LITTLE_ENDIAN);
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isBypass = (((RHF_PBC >> 12) & 7) == 4);
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break;
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case 2: /* For use with internal debugging tools */
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proto_tree_add_item(SnC_tree, hf_opa_snc_Reserved64, tvb, offset, 8, ENC_NA);
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isBypass = FALSE;
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break;
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default:
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isBypass = FALSE;
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}
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offset += 8;
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if (isBypass) {
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/* Bypass packets not implemented in this version */
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expert_add_info(pinfo, NULL, &ei_opa_snc_nobypass);
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} else {
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call_dissector(opa_9b_handle, tvb_new_subset_remaining(tvb, offset), pinfo, tree);
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}
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return tvb_captured_length(tvb);
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}
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void proto_register_opa_snc(void)
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{
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expert_module_t *expert_opa_snc;
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static hf_register_info hf[] = {
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{ &hf_opa_snc_direction, {
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"Direction", "opa.snc.direction",
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FT_UINT8, BASE_HEX, VALS(vals_opa_snc_direction), 0x0, NULL, HFILL }
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},
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{ &hf_opa_snc_portnumber, {
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"Port Number", "opa.snc.portnumber",
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FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }
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},
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{ &hf_opa_snc_Reserved32, {
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"Reserved (32 bits)", "opa.snc.reserved32",
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FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }
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},
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{ &hf_opa_snc_Reserved64, {
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"Reserved (64 bits)", "opa.snc.reserved64",
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FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }
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},
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{ &hf_opa_snc_Reserved16, {
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"Reserved (16 bits)", "opa.snc.reserved16",
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FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_reserved_63_48, {
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"Reserved (16 bits)", "opa.snc.pbc.reserved_63_48",
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FT_UINT32, BASE_HEX, NULL, 0xFFFF0000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcstaticratecontrolcnt, {
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"Static Rate Control Counter", "opa.snc.pbc.pbcstaticratecontrolcnt",
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FT_UINT32, BASE_HEX, NULL, 0x0000FFFF, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcintr, {
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"Interrupt", "opa.snc.pbc.pbcintr",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x80000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcdcinfo, {
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"DC Info", "opa.snc.pbc.pbcdcinfo",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x40000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbctestebp, {
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"Test End Bad Packet", "opa.snc.pbc.pbctestebp",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x20000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcpacketbypass, {
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"Packet Type", "opa.snc.pbc.pbcpacketbypass",
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FT_BOOLEAN, 32, TFS(&tfs_opa_snc_pbc_isBypass), 0x10000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcinserthcrc, {
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"Insert Hcrc", "opa.snc.pbc.pbcinserthcrc",
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FT_UINT32, BASE_HEX, VALS(vals_opa_snc_pbc_insertHcrc), 0x0C000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbccreditreturn, {
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"Request Credit Return", "opa.snc.pbc.pbccreditreturn",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x02000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcinsertbypassicrc, {
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"Insert ICRC for bypass packets", "opa.snc.pbc.pbcinsertbypassicrc",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x01000000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbctestbadicrc, {
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"Insert a bad ICRC", "opa.snc.pbc.pbctestbadicrc",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x00800000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcfecn, {
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"Set FECN bit", "opa.snc.pbc.pbcfecn",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x00400000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_reserved_21_16, {
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"Reserved (6 bits)", "opa.snc.pbc.reserved_21_16",
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FT_UINT32, BASE_HEX, NULL, 0x003F0000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbcvl, {
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"VL", "opa.snc.pbc.pbcvl",
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FT_UINT32, BASE_DEC, NULL, 0x0000F000, NULL, HFILL }
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},
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{ &hf_opa_snc_pbc_pbclengthdws, {
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"pbclengthdws", "opa.snc.pbc.pbclengthdws",
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FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_dw_to_b), 0x00000FFF, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_icrcerr, {
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"ICRC error", "opa.snc.rhf.icrcerr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x80000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_reserved_62, {
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"Reserved (1 bit)", "opa.snc.rhf.reserved_62",
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FT_UINT32, BASE_HEX, NULL, 0x40000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_eccerr, {
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"Internal memory Uncorrectable error", "opa.snc.rhf.eccerr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x200000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_lenerr, {
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"Length Error", "opa.snc.rhf.lenerr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x10000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_tiderr, {
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"TID Error", "opa.snc.rhf.tiderr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x08000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_rcvtypeerr, {
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"Receive Type Error", "opa.snc.rhf.rcvtypeerr",
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FT_UINT32, BASE_HEX, VALS(vals_opa_snc_rhf_rcvtypeerr), 0x07000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_dcerr, {
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"End Bad Packet Error", "opa.snc.rhf.dcerr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x00800000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_dcuncerr, {
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"Uncorrectable or parity error", "opa.snc.rhf.dcuncerr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x00400000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_khdrlenerr, {
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"KDETH Length Error", "opa.snc.rhf.khdrlenerr",
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FT_BOOLEAN, 32, TFS(&tfs_error_ok), 0x00200000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_hdrqoffset, {
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"Receive Header Offset", "opa.snc.rhf.hdrqoffset",
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FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_dw_to_b), 0x001FF000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_egroffset, {
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"Eager Buffer Offset", "opa.snc.rhf.egroffset",
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FT_UINT32, BASE_CUSTOM, CF_FUNC(cf_opa_snc_qw_to_b), 0x00000FFF, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_rcvseq, {
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"Receive Sequence", "opa.snc.rhf.rcvseq",
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FT_UINT32, BASE_DEC, NULL, 0xF0000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_dcinfo, {
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"DC Info", "opa.snc.rhf.dcinfo",
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FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x08000000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_egrindex, {
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"Eager Buffer Index", "opa.snc.rhf.egrindex",
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FT_UINT32, BASE_HEX, NULL, 0x07FF0000, NULL, HFILL }
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},
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{ &hf_opa_snc_rhf_useegrbfr, {
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"Use Eager Buffer", "opa.snc.rhf.useegrbfr",
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|
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:
|
|
*/
|