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ethtool: add a new command for reading standard stats

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Add an interface for reading standard stats, including
stats which don't have a corresponding control interface.

Start with IEEE 802.3 PHY stats. There seems to be only
one stat to expose there.

Define API to not require user space changes when new
stats or groups are added. Groups are based on bitset,
stats have a string set associated.

v1: wrap stats in a nest

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2021-04-16 12:27:39 -07:00 • committed by David S. Miller
parent ddc78b3621
commit f09ea6fb12
8 changed files with 287 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/uapi/linux/ethtool.h
View file

@ -669,6 +669,8 @@ enum ethtool_link_ext_substate_cable_issue {
* @ETH_SS_TS_TX_TYPES: timestamping Tx types
* @ETH_SS_TS_RX_FILTERS: timestamping Rx filters
* @ETH_SS_UDP_TUNNEL_TYPES: UDP tunnel types
* @ETH_SS_STATS_STD: standardized stats
* @ETH_SS_STATS_ETH_PHY: names of IEEE 802.3 PHY statistics
*
* @ETH_SS_COUNT: number of defined string sets
*/
@ -689,6 +691,8 @@ enum ethtool_stringset {
ETH_SS_TS_TX_TYPES,
ETH_SS_TS_RX_FILTERS,
ETH_SS_UDP_TUNNEL_TYPES,
ETH_SS_STATS_STD,
ETH_SS_STATS_ETH_PHY,
/* add new constants above here */
ETH_SS_COUNT

47
include/uapi/linux/ethtool_netlink.h
View file

@ -45,6 +45,7 @@ enum {
ETHTOOL_MSG_FEC_GET,
ETHTOOL_MSG_FEC_SET,
ETHTOOL_MSG_MODULE_EEPROM_GET,
ETHTOOL_MSG_STATS_GET,
/* add new constants above here */
__ETHTOOL_MSG_USER_CNT,
@ -86,6 +87,7 @@ enum {
ETHTOOL_MSG_FEC_GET_REPLY,
ETHTOOL_MSG_FEC_NTF,
ETHTOOL_MSG_MODULE_EEPROM_GET_REPLY,
ETHTOOL_MSG_STATS_GET_REPLY,
/* add new constants above here */
__ETHTOOL_MSG_KERNEL_CNT,
@ -679,6 +681,51 @@ enum {
ETHTOOL_A_MODULE_EEPROM_MAX = (__ETHTOOL_A_MODULE_EEPROM_CNT - 1)
};
/* STATS */
enum {
ETHTOOL_A_STATS_UNSPEC,
ETHTOOL_A_STATS_PAD,
ETHTOOL_A_STATS_HEADER, /* nest - _A_HEADER_* */
ETHTOOL_A_STATS_GROUPS, /* bitset */
ETHTOOL_A_STATS_GRP, /* nest - _A_STATS_GRP_* */
/* add new constants above here */
__ETHTOOL_A_STATS_CNT,
ETHTOOL_A_STATS_MAX = (__ETHTOOL_A_STATS_CNT - 1)
};
enum {
ETHTOOL_STATS_ETH_PHY,
/* add new constants above here */
__ETHTOOL_STATS_CNT
};
enum {
ETHTOOL_A_STATS_GRP_UNSPEC,
ETHTOOL_A_STATS_GRP_PAD,
ETHTOOL_A_STATS_GRP_ID, /* u32 */
ETHTOOL_A_STATS_GRP_SS_ID, /* u32 */
ETHTOOL_A_STATS_GRP_STAT, /* nest */
/* add new constants above here */
__ETHTOOL_A_STATS_GRP_CNT,
ETHTOOL_A_STATS_GRP_MAX = (__ETHTOOL_A_STATS_CNT - 1)
};
enum {
/* 30.3.2.1.5 aSymbolErrorDuringCarrier */
ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR,
/* add new constants above here */
__ETHTOOL_A_STATS_ETH_PHY_CNT,
ETHTOOL_A_STATS_ETH_PHY_MAX = (__ETHTOOL_A_STATS_ETH_PHY_CNT - 1)
};
/* generic netlink info */
#define ETHTOOL_GENL_NAME "ethtool"
#define ETHTOOL_GENL_VERSION 1