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Teach wireshark plugin about VIR_NET_STREAM_HOLE

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Ideally, this would be generated, but to achieve that
corresponding XDR definitions needed to go into a different .x
file. But they belong just to the one that they are right now.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Michal Privoznik 2016-04-13 16:38:09 +02:00
parent 79d16419c4
commit 2e5671adf2
2 changed files with 54 additions and 0 deletions
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52
tools/wireshark/src/packet-libvirt.c
View File

@ -50,8 +50,12 @@ static int hf_libvirt_serial = -1;
static int hf_libvirt_status = -1;
static int hf_libvirt_stream = -1;
static int hf_libvirt_num_of_fds = -1;
static int hf_libvirt_stream_hole_length = -1;
static int hf_libvirt_stream_hole_flags = -1;
static int hf_libvirt_stream_hole = -1;
int hf_libvirt_unknown = -1;
static gint ett_libvirt = -1;
static gint ett_libvirt_stream_hole = -1;
#define XDR_PRIMITIVE_DISSECTOR(xtype, ctype, ftype) \
static gboolean \
@ -326,6 +330,33 @@ dissect_libvirt_payload_xdr_data(tvbuff_t *tvb, proto_tree *tree, gint payload_l
dissect_libvirt_fds(tvb, start + payload_length, nfds);
}
static gboolean
dissect_xdr_stream_hole(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf)
{
goffset start;
proto_item *ti;
start = xdr_getpos(xdrs);
if (hf == -1) {
ti = proto_tree_add_item(tree, hf_libvirt_stream_hole, tvb, start, -1, ENC_NA);
} else {
header_field_info *hfinfo;
hfinfo = proto_registrar_get_nth(hf_libvirt_stream_hole);
ti = proto_tree_add_item(tree, hf, tvb, start, -1, ENC_NA);
proto_item_append_text(ti, " :: %s", hfinfo->name);
}
tree = proto_item_add_subtree(ti, ett_libvirt_stream_hole);
hf = hf_libvirt_stream_hole_length;
if (!dissect_xdr_hyper(tvb, tree, xdrs, hf)) return FALSE;
hf = hf_libvirt_stream_hole_flags;
if (!dissect_xdr_u_int(tvb, tree, xdrs, hf)) return FALSE;
proto_item_set_len(ti, xdr_getpos(xdrs) - start);
return TRUE;
}
static void
dissect_libvirt_payload(tvbuff_t *tvb, proto_tree *tree,
guint32 prog, guint32 proc, guint32 type, guint32 status)
@ -346,6 +377,8 @@ dissect_libvirt_payload(tvbuff_t *tvb, proto_tree *tree,
dissect_libvirt_payload_xdr_data(tvb, tree, payload_length, status, VIR_ERROR_MESSAGE_DISSECTOR);
} else if (type == VIR_NET_STREAM) { /* implicitly, status == VIR_NET_CONTINUE */
dissect_libvirt_stream(tvb, tree, payload_length);
} else if (type == VIR_NET_STREAM_HOLE) {
dissect_libvirt_payload_xdr_data(tvb, tree, payload_length, status, dissect_xdr_stream_hole);
} else {
goto unknown;
}
@ -525,6 +558,24 @@ proto_register_libvirt(void)
NULL, 0x0,
NULL, HFILL}
},
{ &hf_libvirt_stream_hole,
{ "stream_hole", "libvirt.stream_hole",
FT_NONE, BASE_NONE,
NULL, 0x0,
NULL, HFILL}
},
{ &hf_libvirt_stream_hole_length,
{ "length", "libvirt.stream_hole.length",
FT_INT64, BASE_DEC,
NULL, 0x0,
NULL, HFILL}
},
{ &hf_libvirt_stream_hole_flags,
{ "flags", "libvirt.stream_hole.flags",
FT_UINT32, BASE_DEC,
NULL, 0x0,
NULL, HFILL}
},
{ &hf_libvirt_unknown,
{ "unknown", "libvirt.unknown",
FT_BYTES, BASE_NONE,
@ -535,6 +586,7 @@ proto_register_libvirt(void)
static gint *ett[] = {
VIR_DYNAMIC_ETTSET
&ett_libvirt_stream_hole,
&ett_libvirt
};

2
tools/wireshark/src/packet-libvirt.h
View File

@ -53,6 +53,7 @@ enum vir_net_message_type {
VIR_NET_STREAM = 3,
VIR_NET_CALL_WITH_FDS = 4,
VIR_NET_REPLY_WITH_FDS = 5,
VIR_NET_STREAM_HOLE = 6,
};
enum vir_net_message_status {
@ -76,6 +77,7 @@ static const value_string type_strings[] = {
{ VIR_NET_STREAM, "STREAM" },
{ VIR_NET_CALL_WITH_FDS, "CALL_WITH_FDS" },
{ VIR_NET_REPLY_WITH_FDS, "REPLY_WITH_FDS" },
{ VIR_NET_STREAM_HOLE, "STREAM_HOLE" },
{ -1, NULL }
};