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/*
* prettymsg.h - human readable message dump
*
* Support for pretty print of an ethtool netlink message
*/
#ifndef ETHTOOL_NETLINK_PRETTYMSG_H__
#define ETHTOOL_NETLINK_PRETTYMSG_H__
#include <linux/netlink.h>
/* data structures for message format descriptions */
enum pretty_nla_format {
NLA_INVALID,
NLA_BINARY,
NLA_U8,
NLA_U16,
NLA_U32,
NLA_U64,
NLA_X8,
NLA_X16,
NLA_X32,
NLA_X64,
NLA_S8,
NLA_S16,
NLA_S32,
NLA_S64,
NLA_STRING,
NLA_FLAG,
NLA_BOOL,
NLA_NESTED,
NLA_ARRAY,
NLA_U8_ENUM,
NLA_U32_ENUM,
};
struct pretty_nla_desc {
enum pretty_nla_format format;
const char *name;
union {
const struct pretty_nla_desc *children;
const char *const *names;
};
union {
unsigned int n_children;
unsigned int n_names;
};
};
struct pretty_nlmsg_desc {
const char *name;
const struct pretty_nla_desc *attrs;
unsigned int n_attrs;
};
/* helper macros for message format descriptions */
#define NLATTR_DESC(_name, _fmt) \
[_name] = { \
.format = _fmt, \
.name = #_name, \
}
#define NLATTR_DESC_INVALID(_name) NLATTR_DESC(_name, NLA_INVALID)
#define NLATTR_DESC_U8(_name) NLATTR_DESC(_name, NLA_U8)
#define NLATTR_DESC_U16(_name) NLATTR_DESC(_name, NLA_U16)
#define NLATTR_DESC_U32(_name) NLATTR_DESC(_name, NLA_U32)
#define NLATTR_DESC_U64(_name) NLATTR_DESC(_name, NLA_U64)
#define NLATTR_DESC_X8(_name) NLATTR_DESC(_name, NLA_X8)
#define NLATTR_DESC_X16(_name) NLATTR_DESC(_name, NLA_X16)
#define NLATTR_DESC_X32(_name) NLATTR_DESC(_name, NLA_X32)
#define NLATTR_DESC_X64(_name) NLATTR_DESC(_name, NLA_X64)
#define NLATTR_DESC_S8(_name) NLATTR_DESC(_name, NLA_U8)
#define NLATTR_DESC_S16(_name) NLATTR_DESC(_name, NLA_U16)
#define NLATTR_DESC_S32(_name) NLATTR_DESC(_name, NLA_U32)
#define NLATTR_DESC_S64(_name) NLATTR_DESC(_name, NLA_S64)
#define NLATTR_DESC_STRING(_name) NLATTR_DESC(_name, NLA_STRING)
#define NLATTR_DESC_FLAG(_name) NLATTR_DESC(_name, NLA_FLAG)
#define NLATTR_DESC_BOOL(_name) NLATTR_DESC(_name, NLA_BOOL)
#define NLATTR_DESC_BINARY(_name) NLATTR_DESC(_name, NLA_BINARY)
#define NLATTR_DESC_NESTED(_name, _children_desc) \
[_name] = { \
.format = NLA_NESTED, \
.name = #_name, \
.children = __ ## _children_desc ## _desc, \
.n_children = ARRAY_SIZE(__ ## _children_desc ## _desc), \
}
#define NLATTR_DESC_NESTED_NODESC(_name) NLATTR_DESC(_name, NLA_NESTED)
#define NLATTR_DESC_ARRAY(_name, _children_desc) \
[_name] = { \
.format = NLA_ARRAY, \
.name = #_name, \
.children = __ ## _children_desc ## _desc, \
.n_children = 1, \
}
#define NLATTR_DESC_U8_ENUM(_name, _names_table) \
[_name] = { \
.format = NLA_U8_ENUM, \
.name = #_name, \
.names = __ ## _names_table ## _names, \
.n_children = ARRAY_SIZE(__ ## _names_table ## _names), \
}
#define NLATTR_DESC_U32_ENUM(_name, _names_table) \
[_name] = { \
.format = NLA_U32_ENUM, \
.name = #_name, \
.names = __ ## _names_table ## _names, \
.n_children = ARRAY_SIZE(__ ## _names_table ## _names), \
}
#define NLMSG_DESC(_name, _attrs) \
[_name] = { \
.name = #_name, \
.attrs = __ ## _attrs ## _desc, \
.n_attrs = ARRAY_SIZE(__ ## _attrs ## _desc), \
}
#define NLMSG_DESC_INVALID(_name) \
[_name] = { \
.name = #_name, \
}
/* function to pretty print a genetlink message */
int pretty_print_genlmsg(const struct nlmsghdr *nlhdr,
const struct pretty_nlmsg_desc *desc,
unsigned int ndesc, unsigned int err_offset);
int pretty_print_rtnlmsg(const struct nlmsghdr *nlhdr, unsigned int err_offset);
/* message descriptions */
extern const struct pretty_nlmsg_desc ethnl_umsg_desc[];
extern const unsigned int ethnl_umsg_n_desc;
extern const struct pretty_nlmsg_desc ethnl_kmsg_desc[];
extern const unsigned int ethnl_kmsg_n_desc;
extern const struct pretty_nlmsg_desc genlctrl_msg_desc[];
extern const unsigned int genlctrl_msg_n_desc;
extern const struct pretty_nlmsg_desc rtnl_msg_desc[];
extern const unsigned int rtnl_msg_n_desc;
extern const unsigned short rtnl_msghdr_lengths[];
extern const unsigned int rtnl_msghdr_n_len;
#endif /* ETHTOOL_NETLINK_PRETTYMSG_H__ */
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