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ethtool: helper functions for netlink interface

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Add common request/reply header definition and helpers to parse request
header and fill reply header. Provide ethnl_update_* helpers to update
structure members from request attributes (to be used for *_SET requests).

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kubecek
2019-12-27 15:55:23 +01:00
committed by David S. Miller
parent 2b4a8990b7
commit 041b1c5d4a
3 changed files with 392 additions and 0 deletions
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21
include/uapi/linux/ethtool_netlink.h
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@@ -29,6 +29,27 @@ enum {
ETHTOOL_MSG_KERNEL_MAX = __ETHTOOL_MSG_KERNEL_CNT - 1
};
/* request header */
/* use compact bitsets in reply */
#define ETHTOOL_FLAG_COMPACT_BITSETS (1 << 0)
/* provide optional reply for SET or ACT requests */
#define ETHTOOL_FLAG_OMIT_REPLY (1 << 1)
#define ETHTOOL_FLAG_ALL (ETHTOOL_FLAG_COMPACT_BITSETS | \
ETHTOOL_FLAG_OMIT_REPLY)
enum {
ETHTOOL_A_HEADER_UNSPEC,
ETHTOOL_A_HEADER_DEV_INDEX, /* u32 */
ETHTOOL_A_HEADER_DEV_NAME, /* string */
ETHTOOL_A_HEADER_FLAGS, /* u32 - ETHTOOL_FLAG_* */
/* add new constants above here */
__ETHTOOL_A_HEADER_CNT,
ETHTOOL_A_HEADER_MAX = __ETHTOOL_A_HEADER_CNT - 1
};
/* generic netlink info */
#define ETHTOOL_GENL_NAME "ethtool"
#define ETHTOOL_GENL_VERSION 1