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ethtool: provide link settings with LINKINFO_GET request

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Implement LINKINFO_GET netlink request to get basic link settings provided
by ETHTOOL_GLINKSETTINGS and ETHTOOL_GSET ioctl commands.

This request provides settings not directly related to autonegotiation and
link mode selection: physical port, phy MDIO address, MDI(-X) status,
MDI(-X) control and transceiver.

LINKINFO_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.

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 15:55:48 +01:00
committed by David S. Miller
parent 71921690f9
commit 459e0b81b3
9 changed files with 209 additions and 51 deletions
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18
include/uapi/linux/ethtool_netlink.h
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@@ -15,6 +15,7 @@
enum {
ETHTOOL_MSG_USER_NONE,
ETHTOOL_MSG_STRSET_GET,
ETHTOOL_MSG_LINKINFO_GET,
/* add new constants above here */
__ETHTOOL_MSG_USER_CNT,
@@ -25,6 +26,7 @@ enum {
enum {
ETHTOOL_MSG_KERNEL_NONE,
ETHTOOL_MSG_STRSET_GET_REPLY,
ETHTOOL_MSG_LINKINFO_GET_REPLY,
/* add new constants above here */
__ETHTOOL_MSG_KERNEL_CNT,
@@ -141,6 +143,22 @@ enum {
ETHTOOL_A_STRSET_MAX = __ETHTOOL_A_STRSET_CNT - 1
};
/* LINKINFO */
enum {
ETHTOOL_A_LINKINFO_UNSPEC,
ETHTOOL_A_LINKINFO_HEADER, /* nest - _A_HEADER_* */
ETHTOOL_A_LINKINFO_PORT, /* u8 */
ETHTOOL_A_LINKINFO_PHYADDR, /* u8 */
ETHTOOL_A_LINKINFO_TP_MDIX, /* u8 */
ETHTOOL_A_LINKINFO_TP_MDIX_CTRL, /* u8 */
ETHTOOL_A_LINKINFO_TRANSCEIVER, /* u8 */
/* add new constants above here */
__ETHTOOL_A_LINKINFO_CNT,
ETHTOOL_A_LINKINFO_MAX = __ETHTOOL_A_LINKINFO_CNT - 1
};
/* generic netlink info */
#define ETHTOOL_GENL_NAME "ethtool"
#define ETHTOOL_GENL_VERSION 1