573 lines
17 KiB
C
573 lines
17 KiB
C
/* packet-netlink-generic.c
|
|
* Dissector for Linux Generic Netlink.
|
|
*
|
|
* Copyright (c) 2017, Peter Wu <peter@lekensteyn.nl>
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#include "packet-netlink.h"
|
|
|
|
/*
|
|
* Documentation:
|
|
* https://wiki.linuxfoundation.org/networking/generic_netlink_howto#message-format
|
|
* include/uapi/linux/netlink.h
|
|
* include/uapi/linux/genetlink.h
|
|
*
|
|
* For the meaning of fields in genlmsghdr, see genlmsg_put in
|
|
* net/netlink/genetlink.c, note that it has no user-specific message header
|
|
* (genl_ctrl.hdr_size==0).
|
|
*/
|
|
|
|
void proto_register_netlink_generic(void);
|
|
void proto_reg_handoff_netlink_generic(void);
|
|
|
|
typedef struct {
|
|
/* Values parsed from the attributes (only valid in this packet). */
|
|
guint16 family_id;
|
|
const guint8 *family_name;
|
|
} genl_ctrl_info_t;
|
|
|
|
/* from include/uapi/linux/genetlink.h */
|
|
enum {
|
|
WS_CTRL_CMD_UNSPEC,
|
|
WS_CTRL_CMD_NEWFAMILY,
|
|
WS_CTRL_CMD_DELFAMILY,
|
|
WS_CTRL_CMD_GETFAMILY,
|
|
WS_CTRL_CMD_NEWOPS,
|
|
WS_CTRL_CMD_DELOPS,
|
|
WS_CTRL_CMD_GETOPS,
|
|
WS_CTRL_CMD_NEWMCAST_GRP,
|
|
WS_CTRL_CMD_DELMCAST_GRP,
|
|
WS_CTRL_CMD_GETMCAST_GRP,
|
|
WS_CTRL_CMD_GETPOLICY,
|
|
};
|
|
|
|
enum ws_genl_ctrl_attr {
|
|
WS_CTRL_ATTR_UNSPEC,
|
|
WS_CTRL_ATTR_FAMILY_ID,
|
|
WS_CTRL_ATTR_FAMILY_NAME,
|
|
WS_CTRL_ATTR_VERSION,
|
|
WS_CTRL_ATTR_HDRSIZE,
|
|
WS_CTRL_ATTR_MAXATTR,
|
|
WS_CTRL_ATTR_OPS,
|
|
WS_CTRL_ATTR_MCAST_GROUPS,
|
|
WS_CTRL_ATTR_POLICY,
|
|
WS_CTRL_ATTR_OP_POLICY,
|
|
WS_CTRL_ATTR_OP,
|
|
};
|
|
|
|
enum ws_genl_ctrl_op_attr {
|
|
WS_CTRL_ATTR_OP_UNSPEC,
|
|
WS_CTRL_ATTR_OP_ID,
|
|
WS_CTRL_ATTR_OP_FLAGS,
|
|
};
|
|
|
|
enum ws_genl_ctrl_group_attr {
|
|
WS_CTRL_ATTR_MCAST_GRP_UNSPEC,
|
|
WS_CTRL_ATTR_MCAST_GRP_NAME,
|
|
WS_CTRL_ATTR_MCAST_GRP_ID,
|
|
};
|
|
|
|
#define WS_GENL_ID_CTRL 0x10
|
|
#define GENL_CTRL_NAME "nlctrl"
|
|
|
|
static const value_string genl_ctrl_cmds[] = {
|
|
{ WS_CTRL_CMD_UNSPEC, "CTRL_CMD_UNSPEC" },
|
|
{ WS_CTRL_CMD_NEWFAMILY, "CTRL_CMD_NEWFAMILY" },
|
|
{ WS_CTRL_CMD_DELFAMILY, "CTRL_CMD_DELFAMILY" },
|
|
{ WS_CTRL_CMD_GETFAMILY, "CTRL_CMD_GETFAMILY" },
|
|
{ WS_CTRL_CMD_NEWOPS, "CTRL_CMD_NEWOPS" },
|
|
{ WS_CTRL_CMD_DELOPS, "CTRL_CMD_DELOPS" },
|
|
{ WS_CTRL_CMD_GETOPS, "CTRL_CMD_GETOPS" },
|
|
{ WS_CTRL_CMD_NEWMCAST_GRP, "CTRL_CMD_NEWMCAST_GRP" },
|
|
{ WS_CTRL_CMD_DELMCAST_GRP, "CTRL_CMD_DELMCAST_GRP" },
|
|
{ WS_CTRL_CMD_GETMCAST_GRP, "CTRL_CMD_GETMCAST_GRP" },
|
|
{ WS_CTRL_CMD_GETPOLICY, "CTRL_CMD_GETPOLICY" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string genl_ctrl_attr_vals[] = {
|
|
{ WS_CTRL_ATTR_UNSPEC, "CTRL_ATTR_UNSPEC" },
|
|
{ WS_CTRL_ATTR_FAMILY_ID, "CTRL_ATTR_FAMILY_ID" },
|
|
{ WS_CTRL_ATTR_FAMILY_NAME, "CTRL_ATTR_FAMILY_NAME" },
|
|
{ WS_CTRL_ATTR_VERSION, "CTRL_ATTR_VERSION" },
|
|
{ WS_CTRL_ATTR_HDRSIZE, "CTRL_ATTR_HDRSIZE" },
|
|
{ WS_CTRL_ATTR_MAXATTR, "CTRL_ATTR_MAXATTR" },
|
|
{ WS_CTRL_ATTR_OPS, "CTRL_ATTR_OPS" },
|
|
{ WS_CTRL_ATTR_MCAST_GROUPS, "CTRL_ATTR_MCAST_GROUPS" },
|
|
{ WS_CTRL_ATTR_POLICY, "CTRL_ATTR_POLICY" },
|
|
{ WS_CTRL_ATTR_OP_POLICY, "CTRL_ATTR_OP_POLICY" },
|
|
{ WS_CTRL_ATTR_OP, "CTRL_ATTR_OP" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string genl_ctrl_op_attr_vals[] = {
|
|
{ WS_CTRL_ATTR_OP_UNSPEC, "CTRL_ATTR_OP_UNSPEC" },
|
|
{ WS_CTRL_ATTR_OP_ID, "CTRL_ATTR_OP_ID" },
|
|
{ WS_CTRL_ATTR_OP_FLAGS, "CTRL_ATTR_OP_FLAGS" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string genl_ctrl_group_attr_vals[] = {
|
|
{ WS_CTRL_ATTR_MCAST_GRP_UNSPEC, "CTRL_ATTR_MCAST_GRP_UNSPEC" },
|
|
{ WS_CTRL_ATTR_MCAST_GRP_NAME, "CTRL_ATTR_MCAST_GRP_NAME" },
|
|
{ WS_CTRL_ATTR_MCAST_GRP_ID, "CTRL_ATTR_MCAST_GRP_ID" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static dissector_handle_t netlink_generic;
|
|
static dissector_handle_t netlink_generic_ctrl;
|
|
static dissector_table_t genl_dissector_table;
|
|
|
|
static int proto_netlink_generic;
|
|
|
|
static int hf_genl_cmd;
|
|
static int hf_genl_ctrl_attr;
|
|
static int hf_genl_ctrl_cmd;
|
|
static int hf_genl_ctrl_family_id;
|
|
static int hf_genl_ctrl_family_name;
|
|
static int hf_genl_ctrl_group_id;
|
|
static int hf_genl_ctrl_group_name;
|
|
static int hf_genl_ctrl_groups_attr;
|
|
static int hf_genl_ctrl_hdrsize;
|
|
static int hf_genl_ctrl_maxattr;
|
|
static int hf_genl_ctrl_op_flags;
|
|
static int hf_genl_ctrl_op_flags_admin_perm;
|
|
static int hf_genl_ctrl_op_flags_cmd_cap_do;
|
|
static int hf_genl_ctrl_op_flags_cmd_cap_dump;
|
|
static int hf_genl_ctrl_op_flags_cmd_cap_haspol;
|
|
static int hf_genl_ctrl_op_flags_uns_admin_perm;
|
|
static int hf_genl_ctrl_op_id;
|
|
static int hf_genl_ctrl_ops_attr;
|
|
static int hf_genl_ctrl_version;
|
|
static int hf_genl_family_id;
|
|
static int hf_genl_reserved;
|
|
static int hf_genl_version;
|
|
|
|
static gint ett_netlink_generic;
|
|
static gint ett_genl_ctrl_attr;
|
|
static gint ett_genl_ctrl_ops;
|
|
static gint ett_genl_ctrl_ops_attr;
|
|
static gint ett_genl_ctrl_op_flags;
|
|
static gint ett_genl_ctrl_groups;
|
|
static gint ett_genl_ctrl_groups_attr;
|
|
static gint ett_genl_nested_attr;
|
|
|
|
/*
|
|
* Maps family IDs (integers) to family names (strings) within a capture file.
|
|
*/
|
|
static wmem_map_t *genl_family_map;
|
|
|
|
static int * const genl_ctrl_op_flags_fields[] = {
|
|
&hf_genl_ctrl_op_flags_admin_perm,
|
|
&hf_genl_ctrl_op_flags_cmd_cap_do,
|
|
&hf_genl_ctrl_op_flags_cmd_cap_dump,
|
|
&hf_genl_ctrl_op_flags_cmd_cap_haspol,
|
|
&hf_genl_ctrl_op_flags_uns_admin_perm,
|
|
NULL
|
|
};
|
|
|
|
static int
|
|
dissect_genl_ctrl_ops_attrs(tvbuff_t *tvb, void *data _U_, struct packet_netlink_data *nl_data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_genl_ctrl_op_attr type = (enum ws_genl_ctrl_op_attr) nla_type;
|
|
proto_tree *ptree = proto_tree_get_parent_tree(tree);
|
|
guint32 value;
|
|
|
|
switch (type) {
|
|
case WS_CTRL_ATTR_OP_UNSPEC:
|
|
break;
|
|
case WS_CTRL_ATTR_OP_ID:
|
|
if (len == 4) {
|
|
proto_tree_add_item_ret_uint(tree, hf_genl_ctrl_op_id, tvb, offset, 4, nl_data->encoding, &value);
|
|
proto_item_append_text(tree, ": %u", value);
|
|
proto_item_append_text(ptree, ", id=%u", value);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
case WS_CTRL_ATTR_OP_FLAGS:
|
|
if (len == 4) {
|
|
guint64 op_flags;
|
|
/* XXX it would be nice if the flag names are appended to the tree */
|
|
proto_tree_add_bitmask_with_flags_ret_uint64(tree, tvb, offset, hf_genl_ctrl_op_flags,
|
|
ett_genl_ctrl_op_flags, genl_ctrl_op_flags_fields, nl_data->encoding, BMT_NO_FALSE, &op_flags);
|
|
proto_item_append_text(tree, ": 0x%08x", (guint32)op_flags);
|
|
proto_item_append_text(ptree, ", flags=0x%08x", (guint32)op_flags);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_genl_ctrl_groups_attrs(tvbuff_t *tvb, void *data _U_, struct packet_netlink_data *nl_data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_genl_ctrl_group_attr type = (enum ws_genl_ctrl_group_attr) nla_type;
|
|
proto_tree *ptree = proto_tree_get_parent_tree(tree);
|
|
guint32 value;
|
|
const guint8 *strval;
|
|
|
|
switch (type) {
|
|
case WS_CTRL_ATTR_MCAST_GRP_UNSPEC:
|
|
break;
|
|
case WS_CTRL_ATTR_MCAST_GRP_NAME:
|
|
proto_tree_add_item_ret_string(tree, hf_genl_ctrl_group_name, tvb, offset, len, ENC_ASCII, wmem_packet_scope(), &strval);
|
|
proto_item_append_text(tree, ": %s", strval);
|
|
proto_item_append_text(ptree, ", name=%s", strval);
|
|
offset += len;
|
|
break;
|
|
case WS_CTRL_ATTR_MCAST_GRP_ID:
|
|
if (len == 4) {
|
|
proto_tree_add_item_ret_uint(tree, hf_genl_ctrl_group_id, tvb, offset, 4, nl_data->encoding, &value);
|
|
proto_item_append_text(tree, ": %u", value);
|
|
proto_item_append_text(ptree, ", id=%u", value);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_genl_ctrl_attrs(tvbuff_t *tvb, void *data, struct packet_netlink_data *nl_data, proto_tree *tree, int nla_type, int offset, int len)
|
|
{
|
|
enum ws_genl_ctrl_attr type = (enum ws_genl_ctrl_attr) nla_type;
|
|
genl_ctrl_info_t *info = (genl_ctrl_info_t *) data;
|
|
guint32 value;
|
|
|
|
switch (type) {
|
|
case WS_CTRL_CMD_UNSPEC:
|
|
break;
|
|
case WS_CTRL_ATTR_FAMILY_ID:
|
|
if (len == 2) {
|
|
proto_tree_add_item_ret_uint(tree, hf_genl_ctrl_family_id, tvb, offset, 2, nl_data->encoding, &value);
|
|
proto_item_append_text(tree, ": %#x", value);
|
|
info->family_id = value;
|
|
offset += 2;
|
|
}
|
|
break;
|
|
case WS_CTRL_ATTR_FAMILY_NAME:
|
|
proto_tree_add_item_ret_string(tree, hf_genl_ctrl_family_name, tvb, offset, len, ENC_ASCII, wmem_packet_scope(), &info->family_name);
|
|
proto_item_append_text(tree, ": %s", info->family_name);
|
|
offset += len;
|
|
break;
|
|
case WS_CTRL_ATTR_VERSION:
|
|
if (len == 4) {
|
|
proto_tree_add_item_ret_uint(tree, hf_genl_ctrl_version, tvb, offset, 4, nl_data->encoding, &value);
|
|
proto_item_append_text(tree, ": %u", value);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
case WS_CTRL_ATTR_HDRSIZE:
|
|
if (len == 4) {
|
|
proto_tree_add_item_ret_uint(tree, hf_genl_ctrl_hdrsize, tvb, offset, 4, nl_data->encoding, &value);
|
|
proto_item_append_text(tree, ": %u", value);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
case WS_CTRL_ATTR_MAXATTR:
|
|
if (len == 4) {
|
|
proto_tree_add_item_ret_uint(tree, hf_genl_ctrl_maxattr, tvb, offset, 4, nl_data->encoding, &value);
|
|
proto_item_append_text(tree, ": %u", value);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
case WS_CTRL_ATTR_OPS:
|
|
offset = dissect_netlink_attributes_array(tvb, hf_genl_ctrl_ops_attr, ett_genl_ctrl_ops, ett_genl_ctrl_ops_attr, info, nl_data, tree, offset, len, dissect_genl_ctrl_ops_attrs);
|
|
break;
|
|
case WS_CTRL_ATTR_MCAST_GROUPS:
|
|
offset = dissect_netlink_attributes_array(tvb, hf_genl_ctrl_groups_attr, ett_genl_ctrl_groups, ett_genl_ctrl_groups_attr, info, nl_data, tree, offset, len, dissect_genl_ctrl_groups_attrs);
|
|
break;
|
|
case WS_CTRL_ATTR_POLICY:
|
|
case WS_CTRL_ATTR_OP_POLICY:
|
|
case WS_CTRL_ATTR_OP:
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_genl_ctrl(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree _U_, void *data)
|
|
{
|
|
genl_info_t *genl_info = (genl_info_t *) data;
|
|
genl_ctrl_info_t info;
|
|
int offset;
|
|
|
|
if (!genl_info) {
|
|
return 0;
|
|
}
|
|
|
|
info.family_id = 0;
|
|
info.family_name = NULL;
|
|
|
|
offset = dissect_genl_header(tvb, genl_info, genl_info->nl_data, hf_genl_ctrl_cmd);
|
|
|
|
/* Return if command has no payload */
|
|
if (!tvb_reported_length_remaining(tvb, offset))
|
|
return offset;
|
|
|
|
dissect_netlink_attributes_to_end(tvb, hf_genl_ctrl_attr, ett_genl_ctrl_attr, &info, genl_info->nl_data, genl_info->genl_tree, offset, dissect_genl_ctrl_attrs);
|
|
|
|
/*
|
|
* Remember association of dynamic ID with the family name such that
|
|
* future packets can be linked to a protocol.
|
|
* Do not allow overwriting our control protocol.
|
|
*/
|
|
if (info.family_id && info.family_id != WS_GENL_ID_CTRL && info.family_name) {
|
|
wmem_map_insert(genl_family_map, GUINT_TO_POINTER(info.family_id), wmem_strdup(wmem_file_scope(), info.family_name));
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
int dissect_genl_header(tvbuff_t *tvb, genl_info_t *genl_info, struct packet_netlink_data *nl_data, int hf_cmd)
|
|
{
|
|
int offset = 0;
|
|
|
|
if (hf_cmd <= 0) {
|
|
hf_cmd = hf_genl_cmd;
|
|
}
|
|
proto_tree_add_item(genl_info->genl_tree, hf_cmd, tvb, offset, 1, ENC_NA);
|
|
offset++;
|
|
/* XXX Family dissectors may want to know this */
|
|
proto_tree_add_item(genl_info->genl_tree, hf_genl_version, tvb, offset, 1, ENC_NA);
|
|
offset++;
|
|
proto_tree_add_item(genl_info->genl_tree, hf_genl_reserved, tvb, offset, 2, nl_data->encoding);
|
|
offset += 2;
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_netlink_generic(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
struct packet_netlink_data *nl_data = (struct packet_netlink_data *) data;
|
|
genl_info_t info;
|
|
proto_tree *nlmsg_tree;
|
|
proto_item *pi, *pi_type;
|
|
const char *family_name;
|
|
tvbuff_t *next_tvb;
|
|
int offset = 0;
|
|
|
|
DISSECTOR_ASSERT(nl_data && nl_data->magic == PACKET_NETLINK_MAGIC);
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Netlink generic");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
pi = proto_tree_add_item(tree, proto_netlink_generic, tvb, 0, -1, ENC_NA);
|
|
nlmsg_tree = proto_item_add_subtree(pi, ett_netlink_generic);
|
|
|
|
/* Netlink message header (nlmsghdr) */
|
|
offset = dissect_netlink_header(tvb, nlmsg_tree, offset, nl_data->encoding, hf_genl_family_id, &pi_type);
|
|
family_name = (const char *)wmem_map_lookup(genl_family_map, GUINT_TO_POINTER(nl_data->type));
|
|
proto_item_append_text(pi_type, " (%s)", family_name ? family_name : "Unknown");
|
|
|
|
/* Populate info from Generic Netlink message header (genlmsghdr) */
|
|
info.nl_data = nl_data;
|
|
info.genl_tree = nlmsg_tree;
|
|
info.cmd = tvb_get_guint8(tvb, offset);
|
|
|
|
/* Optional user-specific message header and optional message payload. */
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
if (family_name) {
|
|
int ret;
|
|
/* Invoke subdissector with genlmsghdr present. */
|
|
ret = dissector_try_string(genl_dissector_table, family_name, next_tvb, pinfo, tree, &info);
|
|
if (ret) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* No subdissector added the genl header, do it now. */
|
|
offset = dissect_genl_header(next_tvb, &info, nl_data, -1);
|
|
if (tvb_reported_length_remaining(tvb, offset)) {
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
call_data_dissector(next_tvb, pinfo, tree);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void
|
|
genl_init(void)
|
|
{
|
|
/* Add fixed family entry (0x10 maps to "nlctrl"). */
|
|
wmem_map_insert(genl_family_map, GUINT_TO_POINTER(WS_GENL_ID_CTRL), GENL_CTRL_NAME);
|
|
}
|
|
|
|
void
|
|
proto_register_netlink_generic(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_genl_ctrl_op_id,
|
|
{ "Operation ID", "genl.ctrl.op_id",
|
|
FT_UINT32, BASE_DEC, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_op_flags,
|
|
{ "Operation Flags", "genl.ctrl.op_flags",
|
|
FT_UINT32, BASE_HEX, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_op_flags_admin_perm,
|
|
{ "GENL_ADMIN_PERM", "genl.ctrl.op_flags.admin_perm",
|
|
FT_BOOLEAN, 32, NULL, 0x00000001,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_op_flags_cmd_cap_do,
|
|
{ "GENL_CMD_CAP_DO", "genl.ctrl.op_flags.cmd_cap_do",
|
|
FT_BOOLEAN, 32, NULL, 0x00000002,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_op_flags_cmd_cap_dump,
|
|
{ "GENL_CMD_CAP_DUMP", "genl.ctrl.op_flags.cmd_cap_dump",
|
|
FT_BOOLEAN, 32, NULL, 0x00000004,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_op_flags_cmd_cap_haspol,
|
|
{ "GENL_CMD_CAP_HASPOL", "genl.ctrl.op_flags.cmd_cap_haspol",
|
|
FT_BOOLEAN, 32, NULL, 0x00000008,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_op_flags_uns_admin_perm,
|
|
{ "GENL_UNS_ADMIN_PERM", "genl.ctrl.op_flags.uns_admin_perm",
|
|
FT_BOOLEAN, 32, NULL, 0x00000010,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_group_name,
|
|
{ "Group Name", "genl.ctrl.group_name",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_group_id,
|
|
{ "Group ID", "genl.ctrl.group_id",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_family_id,
|
|
{ "Family ID", "genl.ctrl.family_id",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_family_name,
|
|
{ "Family Name", "genl.ctrl.family_name",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_version,
|
|
{ "Version", "genl.ctrl.version",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Family-specific version number", HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_hdrsize,
|
|
{ "Header Size", "genl.ctrl.hdrsize",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Size of family-specific header", HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_maxattr,
|
|
{ "Maximum Attributes", "genl.ctrl.maxattr",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Maximum number of attributes", HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_ops_attr,
|
|
{ "Type", "genl.ctrl.ops_attr",
|
|
FT_UINT16, BASE_DEC, VALS(genl_ctrl_op_attr_vals), NLA_TYPE_MASK,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_groups_attr,
|
|
{ "Type", "genl.ctrl.groups_attr",
|
|
FT_UINT16, BASE_DEC, VALS(genl_ctrl_group_attr_vals), NLA_TYPE_MASK,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_cmd,
|
|
{ "Command", "genl.ctrl.cmd",
|
|
FT_UINT8, BASE_DEC, VALS(genl_ctrl_cmds), 0x0,
|
|
"Generic Netlink command", HFILL }
|
|
},
|
|
{ &hf_genl_ctrl_attr,
|
|
{ "Type", "genl.ctrl_attr",
|
|
FT_UINT16, BASE_DEC, VALS(genl_ctrl_attr_vals), NLA_TYPE_MASK,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_family_id,
|
|
{ "Family ID", "genl.family_id",
|
|
FT_UINT8, BASE_HEX, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_genl_cmd,
|
|
{ "Command", "genl.cmd",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
"Generic Netlink command", HFILL }
|
|
},
|
|
{ &hf_genl_version,
|
|
{ "Family Version", "genl.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x00,
|
|
"Family-specific version", HFILL }
|
|
},
|
|
{ &hf_genl_reserved,
|
|
{ "Reserved", "genl.reserved",
|
|
FT_NONE, BASE_NONE, NULL, 0x00,
|
|
NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_netlink_generic,
|
|
&ett_genl_ctrl_attr,
|
|
&ett_genl_ctrl_ops,
|
|
&ett_genl_ctrl_ops_attr,
|
|
&ett_genl_ctrl_op_flags,
|
|
&ett_genl_ctrl_groups,
|
|
&ett_genl_ctrl_groups_attr,
|
|
&ett_genl_nested_attr,
|
|
};
|
|
|
|
proto_netlink_generic = proto_register_protocol("Linux Generic Netlink protocol", "genl", "genl");
|
|
proto_register_field_array(proto_netlink_generic, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
netlink_generic = register_dissector("genl", dissect_netlink_generic, proto_netlink_generic);
|
|
netlink_generic_ctrl = register_dissector("genl_ctrl", dissect_genl_ctrl, proto_netlink_generic);
|
|
genl_dissector_table = register_dissector_table(
|
|
"genl.family",
|
|
"Linux Generic Netlink family name",
|
|
proto_netlink_generic, FT_STRING,
|
|
STRING_CASE_SENSITIVE
|
|
);
|
|
|
|
genl_family_map = wmem_map_new_autoreset(wmem_epan_scope(), wmem_file_scope(), g_direct_hash, g_direct_equal);
|
|
|
|
register_init_routine(genl_init);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_netlink_generic(void)
|
|
{
|
|
dissector_add_string("genl.family", GENL_CTRL_NAME, netlink_generic_ctrl);
|
|
dissector_add_uint("netlink.protocol", WS_NETLINK_GENERIC, netlink_generic);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|