forked from osmocom/wireshark
![Bill Meier](/assets/img/avatar_default.png)
Specifically: - Set packet.h to be the first wireshark #include after config.h and "system" #includes. packet.h added as an #include in some cases when missing. - Remove some #includes included (directly/indirectly) in packet.h. E.g., glib.h. (Done only for those files including packet.h). - As needed, move "system" #includes to be after config.h and before wireshark #includes. - Rework various #include file specifications for consistency. - Misc. Change-Id: Ifaa1a14b50b69fbad38ea4838a49dfe595c54c95 Reviewed-on: https://code.wireshark.org/review/5923 Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com> Reviewed-by: Bill Meier <wmeier@newsguy.com>
458 lines
15 KiB
C
458 lines
15 KiB
C
/* packet-iser.c
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* Routines for iSCSI RDMA Extensions dissection
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* Copyright 2014, Mellanox Technologies Ltd.
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* Code by Yan Burman.
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <errno.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/conversation.h>
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#include <epan/addr_resolv.h>
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#include "packet-infiniband.h"
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#define ISER_WSV 0x08
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#define ISER_RSV 0x04
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#define ISER_REJ 0x01
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#define ISER_ISCSI_CTRL 0x10
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#define ISER_HELLO 0x20
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#define ISER_HELLORPLY 0x30
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#define ISER_OPCODE_MASK 0xf0
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#define ISER_SPECIFIC_MASK 0x0f
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#define ISER_HDR_SZ (1 + 3 + 4 + 8 + 4 + 8)
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#define ISCSI_HDR_SZ 48
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#define ISER_ISCSI_HDR_SZ (ISER_HDR_SZ + ISCSI_HDR_SZ)
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#define SID_ULP_MASK 0x00000000FF000000
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#define SID_PROTO_MASK 0x0000000000FF0000
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#define SID_PORT_MASK 0x000000000000FFFF
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#define SID_ULP 0x01
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#define SID_PROTO_TCP 0x06
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#define TCP_PORT_ISER_RANGE "3260"
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#define SID_MASK (SID_ULP_MASK | SID_PROTO_MASK)
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#define SID_ULP_TCP ((SID_ULP << 3 * 8) | (SID_PROTO_TCP << 2 * 8))
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void proto_reg_handoff_iser(void);
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void proto_register_iser(void);
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static int proto_iser = -1;
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static dissector_handle_t iscsi_handler;
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static dissector_handle_t ib_handler;
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static int proto_ib = -1;
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/* iSER Header */
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static int hf_iser = -1;
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static int hf_iser_flags = -1;
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static int hf_iser_opcode_f = -1;
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static int hf_iser_RSV_f = -1;
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static int hf_iser_WSV_f = -1;
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static int hf_iser_REJ_f = -1;
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static int hf_iser_write_stag = -1;
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static int hf_iser_write_va = -1;
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static int hf_iser_read_stag = -1;
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static int hf_iser_read_va = -1;
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static int hf_iser_ird = -1;
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static int hf_iser_ord = -1;
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/* Initialize the subtree pointers */
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static gint ett_iser = -1;
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static gint ett_iser_flags = -1;
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/* global preferences */
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static gboolean gPREF_MAN_EN = FALSE;
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static gint gPREF_TYPE[2] = {0};
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static const char *gPREF_ID[2] = {NULL};
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static guint gPREF_QP[2] = {0};
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static range_t *gPORT_RANGE;
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/* source/destination addresses from preferences menu (parsed from gPREF_TYPE[?], gPREF_ID[?]) */
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static address manual_addr[2];
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static void *manual_addr_data[2];
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static const enum_val_t pref_address_types[] = {
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{"lid", "LID", 0},
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{"gid", "GID", 1},
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{NULL, NULL, -1}
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};
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static const value_string iser_flags_opcode[] = {
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{ ISER_ISCSI_CTRL >> 4, "iSCSI Control-Type PDU"},
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{ ISER_HELLO >> 4, "Hello Message"},
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{ ISER_HELLORPLY >> 4, "HelloReply Message"},
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{0, NULL},
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};
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static const int *flags_fields[] = {
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&hf_iser_opcode_f,
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&hf_iser_WSV_f,
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&hf_iser_RSV_f,
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NULL
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};
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static const int *hello_flags_fields[] = {
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&hf_iser_opcode_f,
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NULL
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};
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static const int *hellorply_flags_fields[] = {
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&hf_iser_opcode_f,
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&hf_iser_REJ_f,
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NULL
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};
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static int dissect_packet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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tvbuff_t *next_tvb;
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/* Set up structures needed to add the protocol subtree and manage it */
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proto_item *ti;
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proto_tree *iser_tree;
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guint offset = 0;
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guint8 flags = tvb_get_guint8(tvb, 0);
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guint8 vers;
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guint8 opcode = flags & ISER_OPCODE_MASK;
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/* Check if the opcode is valid */
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switch (opcode) {
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case ISER_ISCSI_CTRL:
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switch (flags & ISER_SPECIFIC_MASK) {
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case 0:
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case ISER_WSV:
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case ISER_RSV:
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case ISER_RSV|ISER_WSV:
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break;
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default:
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return 0;
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}
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break;
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case ISER_HELLO:
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case ISER_HELLORPLY:
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vers = tvb_get_guint8(tvb, 1);
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if ((vers & 0xf) != 10)
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return 0;
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if (((vers >> 4) & 0x0f) != 10)
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return 0;
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break;
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default:
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return 0;
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}
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "iSER");
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/* Clear out stuff in the info column */
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col_clear(pinfo->cinfo, COL_INFO);
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/* Set info only for hello, since for iscsi, the iscsi dissector will */
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switch (opcode) {
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case ISER_HELLO:
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col_set_str(pinfo->cinfo, COL_INFO, "iSER Hello");
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break;
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case ISER_HELLORPLY:
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col_set_str(pinfo->cinfo, COL_INFO, "iSER HelloRply");
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break;
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}
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if (tree) {
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/* create display subtree for the protocol */
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ti = proto_tree_add_item(tree, hf_iser, tvb, 0, ISER_HDR_SZ, ENC_NA);
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iser_tree = proto_item_add_subtree(ti, ett_iser);
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switch (opcode) {
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case ISER_ISCSI_CTRL:
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proto_tree_add_bitmask(iser_tree, tvb, offset, hf_iser_flags,
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ett_iser_flags, flags_fields, ENC_LITTLE_ENDIAN);
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offset += 4;
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proto_tree_add_item(iser_tree, hf_iser_write_stag, tvb,
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offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(iser_tree, hf_iser_write_va, tvb,
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offset, 8, ENC_BIG_ENDIAN);
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offset += 8;
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proto_tree_add_item(iser_tree, hf_iser_read_stag, tvb,
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offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(iser_tree, hf_iser_read_va, tvb,
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offset, 8, ENC_BIG_ENDIAN);
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break;
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case ISER_HELLO:
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proto_tree_add_bitmask(iser_tree, tvb, offset, hf_iser_flags,
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ett_iser_flags, hello_flags_fields, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(iser_tree, hf_iser_ird, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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break;
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case ISER_HELLORPLY:
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proto_tree_add_bitmask(iser_tree, tvb, offset, hf_iser_flags,
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ett_iser_flags, hellorply_flags_fields, ENC_LITTLE_ENDIAN);
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offset += 2;
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proto_tree_add_item(iser_tree, hf_iser_ord, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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break;
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}
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}
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if (opcode == ISER_ISCSI_CTRL) {
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next_tvb = tvb_new_subset_remaining(tvb, ISER_HDR_SZ);
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call_dissector(iscsi_handler, next_tvb, pinfo, tree);
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}
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return ISER_HDR_SZ;
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}
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static int
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dissect_iser(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
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void *data _U_)
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{
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conversation_t *conv;
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conversation_infiniband_data *convo_data = NULL;
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if (tvb_reported_length(tvb) < ISER_ISCSI_HDR_SZ)
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return 0;
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if (gPREF_MAN_EN) {
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/* If the manual settings are enabled see if this fits - in which case we can skip
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the following checks entirely and go straight to dissecting */
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if ( (ADDRESSES_EQUAL(&pinfo->src, &manual_addr[0]) &&
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ADDRESSES_EQUAL(&pinfo->dst, &manual_addr[1]) &&
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(pinfo->srcport == 0xffffffff /* is unknown */ || pinfo->srcport == gPREF_QP[0]) &&
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(pinfo->destport == 0xffffffff /* is unknown */ || pinfo->destport == gPREF_QP[1])) ||
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(ADDRESSES_EQUAL(&pinfo->src, &manual_addr[1]) &&
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ADDRESSES_EQUAL(&pinfo->dst, &manual_addr[0]) &&
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(pinfo->srcport == 0xffffffff /* is unknown */ || pinfo->srcport == gPREF_QP[1]) &&
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(pinfo->destport == 0xffffffff /* is unknown */ || pinfo->destport == gPREF_QP[0])) )
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return dissect_packet(tvb, pinfo, tree);
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}
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/* first try to find a conversation between the two current hosts. in most cases this
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will not work since we do not have the source QP. this WILL succeed when we're still
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in the process of CM negotiations */
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conv = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst,
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PT_IBQP, pinfo->srcport, pinfo->destport, 0);
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if (!conv) {
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/* if not, try to find an established RC channel. recall Infiniband conversations are
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registered with one side of the channel. since the packet is only guaranteed to
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contain the qpn of the destination, we'll use this */
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conv = find_conversation(pinfo->fd->num, &pinfo->dst, &pinfo->dst,
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PT_IBQP, pinfo->destport, pinfo->destport, NO_ADDR_B|NO_PORT_B);
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if (!conv)
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return 0; /* nothing to do with no conversation context */
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}
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convo_data = (conversation_infiniband_data *)conversation_get_proto_data(conv, proto_ib);
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if (!convo_data)
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return 0;
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if ((convo_data->service_id & SID_MASK) != SID_ULP_TCP)
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return 0; /* the service id doesn't match that of TCP ULP - nothing for us to do here */
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if (!(value_is_in_range(gPORT_RANGE, (guint32)(convo_data->service_id & SID_PORT_MASK))))
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return 0; /* the port doesn't match that of iSER - nothing for us to do here */
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return dissect_packet(tvb, pinfo, tree);
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}
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void
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proto_register_iser(void)
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{
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module_t *iser_module;
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static hf_register_info hf[] = {
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{ &hf_iser, {
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"iSER", "iser",
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FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_flags,
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{ "Flags", "iser.flags",
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FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_opcode_f,
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{ "Opcode", "iser.flags.opcode",
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FT_UINT8, BASE_HEX, VALS(iser_flags_opcode),
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ISER_OPCODE_MASK, NULL, HFILL}
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},
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{ &hf_iser_RSV_f,
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{ "RSV", "iser.flags.rsv",
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FT_BOOLEAN, 8, NULL, ISER_RSV, "Read STag Valid", HFILL}
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},
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{ &hf_iser_WSV_f,
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{ "WSV", "iser.flags.wsv",
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FT_BOOLEAN, 8, NULL, ISER_WSV, "Write STag Valid", HFILL}
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},
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{ &hf_iser_REJ_f,
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{ "REJ", "iser.flags.rej",
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FT_BOOLEAN, 8, NULL, ISER_REJ, "Target reject connection", HFILL}
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},
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{ &hf_iser_write_stag,
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{ "Write STag", "iser.write_stag",
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FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_write_va,
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{ "Write Base Offset", "iser.write_base_offset",
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FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_read_stag,
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{ "Read STag", "iser.read_stag",
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FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_read_va,
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{ "Read Base Offset", "iser.read_base_offset",
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FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_ird,
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{ "iSER-IRD", "iser.ird",
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FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{ &hf_iser_ord,
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{ "iSER-ORD", "iser.ord",
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FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}
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}
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};
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static gint *ett[] = {
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&ett_iser,
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&ett_iser_flags
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};
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proto_iser = proto_register_protocol (
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"iSCSI Extensions for RDMA", /* name */
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"iSER", /* short name */
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"iser" /* abbrev */
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);
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proto_register_field_array(proto_iser, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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/* Register preferences */
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iser_module = prefs_register_protocol(proto_iser, proto_reg_handoff_iser);
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prefs_register_bool_preference(iser_module, "manual_en", "Enable manual settings",
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"Check to treat all traffic between the configured source/destination as iSER",
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&gPREF_MAN_EN);
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prefs_register_static_text_preference(iser_module, "addr_a", "Address A",
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"Side A of the manually-configured connection");
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prefs_register_enum_preference(iser_module, "addr_a_type", "Address Type",
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"Type of address specified", &gPREF_TYPE[0], pref_address_types, FALSE);
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prefs_register_string_preference(iser_module, "addr_a_id", "ID",
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"LID/GID of address A", &gPREF_ID[0]);
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prefs_register_uint_preference(iser_module, "addr_a_qp", "QP Number",
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"QP Number for address A", 10, &gPREF_QP[0]);
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prefs_register_static_text_preference(iser_module, "addr_b", "Address B",
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"Side B of the manually-configured connection");
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prefs_register_enum_preference(iser_module, "addr_b_type", "Address Type",
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"Type of address specified", &gPREF_TYPE[1], pref_address_types, FALSE);
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prefs_register_string_preference(iser_module, "addr_b_id", "ID",
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"LID/GID of address B", &gPREF_ID[1]);
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prefs_register_uint_preference(iser_module, "addr_b_qp", "QP Number",
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"QP Number for address B", 10, &gPREF_QP[1]);
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range_convert_str(&gPORT_RANGE, TCP_PORT_ISER_RANGE, MAX_TCP_PORT);
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prefs_register_range_preference(iser_module,
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"target_ports",
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"Target Ports Range",
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"Range of iSER target ports"
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"(default " TCP_PORT_ISER_RANGE ")",
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&gPORT_RANGE, MAX_TCP_PORT);
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}
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void
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proto_reg_handoff_iser(void)
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{
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static gboolean initialized = FALSE;
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if (!initialized) {
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new_create_dissector_handle(dissect_iser, proto_iser);
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heur_dissector_add("infiniband.payload", dissect_iser, proto_iser);
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heur_dissector_add("infiniband.mad.cm.private", dissect_iser, proto_iser);
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/* allocate enough space in the addresses to store the largest address (a GID) */
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manual_addr_data[0] = wmem_alloc(wmem_epan_scope(), GID_SIZE);
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manual_addr_data[1] = wmem_alloc(wmem_epan_scope(), GID_SIZE);
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iscsi_handler = find_dissector("iscsi");
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ib_handler = find_dissector("infiniband");
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proto_ib = dissector_handle_get_protocol_index(ib_handler);
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initialized = TRUE;
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}
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if (gPREF_MAN_EN) {
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/* the manual setting is enabled, so parse the settings into the address type */
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gboolean error_occured = FALSE;
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char *not_parsed;
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int i;
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for (i = 0; i < 2; i++) {
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if (gPREF_TYPE[i] == 0) { /* LID */
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errno = 0; /* reset any previous error indicators */
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*((guint16*)manual_addr_data[i]) = (guint16)strtoul(gPREF_ID[i], ¬_parsed, 0);
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if (errno || *not_parsed != '\0') {
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error_occured = TRUE;
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} else {
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SET_ADDRESS(&manual_addr[i], AT_IB, sizeof(guint16), manual_addr_data[i]);
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}
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} else { /* GID */
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if (!str_to_ip6(gPREF_ID[i], manual_addr_data[i]) ) {
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error_occured = TRUE;
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} else {
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SET_ADDRESS(&manual_addr[i], AT_IB, GID_SIZE, manual_addr_data[i]);
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}
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}
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if (error_occured) {
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|
/* an invalid id was specified - disable manual settings until it's fixed */
|
|
gPREF_MAN_EN = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://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:
|
|
*/
|