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Diffstat (limited to '')
| -rw-r--r-- | netlink/prettymsg.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/netlink/prettymsg.h b/netlink/prettymsg.h new file mode 100644 index 0000000..8ca1db3 --- /dev/null +++ b/netlink/prettymsg.h @@ -0,0 +1,146 @@ +/* + * 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__ */ |