opa: Add dissectors for Intel’s Omni-Path Architecture (OPA)

Added dissectors for OPA Fabric Executive (FE) Header, OPA Snoop and
Capture (SnC) MetaData Header, OPA 9B Packets, and OPA MAD Packets.

Bug: 12114
Change-Id: I6acd3c9e266e4b638167abbdd275ec7c1d472b4f
Reviewed-on: https://code.wireshark.org/review/13473
Reviewed-by: Adam Goldman <adam.goldman@intel.com>
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Michael Mann <mmann78@netscape.net>

1 files changed, 178 insertions, 0 deletions

diff --git a/epan/dissectors/packet-opa-fe.c b/epan/dissectors/packet-opa-fe.c
new file mode 100644
index 0000000000..06922cd4d4
--- /dev/null
+++ b/epan/dissectors/packet-opa-fe.c
@@ -0,0 +1,178 @@
+/* packet-opa-fe.c
+ * Routines for Omni-Path FE header dissection
+ * Copyright (c) 2016, Intel Corporation.
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * 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 <epan/packet.h>
+#include <epan/prefs.h>
+
+#include "packet-ssl.h"
+
+void proto_reg_handoff_opa_fe(void);
+void proto_register_opa_fe(void);
+
+#define OPA_FE_TCP_RANGE "3245-3248"
+#define OPA_FE_SSL_RANGE "3249-3252"
+
+/* Wireshark ID */
+static gint proto_opa_fe = -1;
+
+/* Variables to hold expansion values between packets */
+static gint ett_fe = -1;
+
+/* SnC Fields */
+static gint hf_opa_fe_magicnumber = -1;
+static gint hf_opa_fe_length_oob = -1;
+static gint hf_opa_fe_headerversion = -1;
+static gint hf_opa_fe_length = -1;
+static gint hf_opa_fe_Reserved64 = -1;
+
+/* Dissector Declarations */
+static dissector_handle_t opa_fe_handle;
+static dissector_handle_t opa_mad_handle;
+
+static range_t *global_fe_tcp_range = NULL;
+static range_t *global_fe_ssl_range = NULL;
+
+static range_t *fe_tcp_range = NULL;
+static range_t *fe_ssl_range = NULL;
+
+static int dissect_opa_fe(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+    gint offset = 0;    /* Current Offset */
+    proto_item *FE_item;
+    proto_tree *FE_tree;
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "Omni-Path");
+    col_clear(pinfo->cinfo, COL_INFO);
+
+    tree = proto_tree_get_root(tree);
+
+    FE_item = proto_tree_add_item(tree, proto_opa_fe, tvb, offset, 24, ENC_NA);
+    FE_tree = proto_item_add_subtree(FE_item, ett_fe);
+
+    proto_tree_add_item(FE_tree, hf_opa_fe_magicnumber, tvb, offset, 4, ENC_BIG_ENDIAN);
+    offset += 4;
+    proto_tree_add_item(FE_tree, hf_opa_fe_length_oob, tvb, offset, 4, ENC_BIG_ENDIAN);
+    offset += 4;
+    proto_tree_add_item(FE_tree, hf_opa_fe_headerversion, tvb, offset, 4, ENC_BIG_ENDIAN);
+    offset += 4;
+    proto_tree_add_item(FE_tree, hf_opa_fe_length, tvb, offset, 4, ENC_BIG_ENDIAN);
+    offset += 4;
+    proto_tree_add_item(FE_tree, hf_opa_fe_Reserved64, tvb, offset, 8, ENC_BIG_ENDIAN);
+    offset += 8;
+
+    /* Pass to OPA MAD dissector */
+    call_dissector(opa_mad_handle, tvb_new_subset_remaining(tvb, offset), pinfo, FE_tree);
+    return tvb_captured_length(tvb);
+}
+
+static void range_delete_fe_ssl_callback(guint32 port)
+{
+    ssl_dissector_delete(port, opa_fe_handle);
+}
+
+static void range_add_fe_ssl_callback(guint32 port)
+{
+    ssl_dissector_add(port, opa_fe_handle);
+}
+
+void proto_register_opa_fe(void)
+{
+    module_t *opa_fe_module;
+
+    static hf_register_info hf[] = {
+        { &hf_opa_fe_magicnumber, {
+                "Magic Number", "opa.fe.magicnumber",
+                FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }
+        },
+        { &hf_opa_fe_length_oob, {
+                "Length OOB", "opa.fe.lengthoob",
+                FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }
+        },
+        { &hf_opa_fe_headerversion, {
+                "Header Version", "opa.fe.headerversion",
+                FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }
+        },
+        { &hf_opa_fe_length, {
+                "Length", "opa.fe.length",
+                FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }
+        },
+        { &hf_opa_fe_Reserved64, {
+                "Reserved (64 bits)", "opa.fe.reserved64",
+                FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }
+        }
+    };
+
+    static gint *ett[] = {
+        &ett_fe
+    };
+
+    proto_opa_fe = proto_register_protocol(
+        "Intel Omni-Path FE Header - Omni-Path Fabric Excutive Header",
+        "OPA FE", "opa.fe");
+    opa_fe_handle = register_dissector("opa.fe", dissect_opa_fe, proto_opa_fe);
+
+    proto_register_field_array(proto_opa_fe, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    opa_fe_module = prefs_register_protocol(proto_opa_fe, proto_reg_handoff_opa_fe);
+    range_convert_str(&global_fe_ssl_range, OPA_FE_SSL_RANGE, 65535);
+    fe_ssl_range = range_empty();
+    prefs_register_range_preference(opa_fe_module, "ssl.port", "SSL/TLS Ports",
+        "SSL/TLS Ports range",
+        &global_fe_ssl_range, 65535);
+    range_convert_str(&global_fe_tcp_range, OPA_FE_TCP_RANGE, 65535);
+    fe_tcp_range = range_empty();
+    prefs_register_range_preference(opa_fe_module, "tcp.port", "TCP Ports",
+        "TCP Ports range",
+        &global_fe_tcp_range, 65535);
+}
+
+void proto_reg_handoff_opa_fe(void)
+{
+    opa_mad_handle = find_dissector("opa.mad");
+
+    range_foreach(fe_ssl_range, range_delete_fe_ssl_callback);
+    g_free(fe_ssl_range);
+    fe_ssl_range = range_copy(global_fe_ssl_range);
+    range_foreach(fe_ssl_range, range_add_fe_ssl_callback);
+
+    dissector_delete_uint_range("tcp.port", fe_tcp_range, opa_fe_handle);
+    g_free(fe_tcp_range);
+    fe_tcp_range = range_copy(global_fe_tcp_range);
+    dissector_add_uint_range("tcp.port", fe_tcp_range, opa_fe_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:
+ */