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| author | David S. Miller <davem@davemloft.net> | 2020-09-15 13:26:29 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-15 13:26:29 -0700 |
| commit | 945c5704887e35bb4aee841c17aca9dd277c5e55 (patch) | |
| tree | 9220d39fb374a93f1d84cfbdf1383c995584175d /include/linux | |
| parent | 0f9ad4e7594419e906427bceba8e52467412895b (diff) | |
| parent | 12d342fea121f04e4ccb6febf41f59ebb74bbe64 (diff) | |
Merge branch 'ethtool-add-pause-frame-stats'
Jakub Kicinski says:
====================
ethtool: add pause frame stats
This is the first (small) series which exposes some stats via
the corresponding ethtool interface. Here (thanks to the
excitability of netlink) we expose pause frame stats via
the same interfaces as ethtool -a / -A.
In particular the following stats from the standard:
- 30.3.4.2 aPAUSEMACCtrlFramesTransmitted
- 30.3.4.3 aPAUSEMACCtrlFramesReceived
4 real drivers are converted, I believe we got confirmation
from maintainers that all exposed stats match the standard.
v3:
- fix mlx5 build
- adjust the init logic in patch 1
v2:
- netdevsim: add missing static
- bnxt: fix sparse warning
- mlx5: address Saeed's comments
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ethtool.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 969a80211df6..060b20f0b20f 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -241,6 +241,27 @@ bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, ETHTOOL_COALESCE_PKT_RATE_LOW | ETHTOOL_COALESCE_PKT_RATE_HIGH | \ ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL) +#define ETHTOOL_STAT_NOT_SET (~0ULL) + +/** + * struct ethtool_pause_stats - statistics for IEEE 802.3x pause frames + * @tx_pause_frames: transmitted pause frame count. Reported to user space + * as %ETHTOOL_A_PAUSE_STAT_TX_FRAMES. + * + * Equivalent to `30.3.4.2 aPAUSEMACCtrlFramesTransmitted` + * from the standard. + * + * @rx_pause_frames: received pause frame count. Reported to user space + * as %ETHTOOL_A_PAUSE_STAT_RX_FRAMES. Equivalent to: + * + * Equivalent to `30.3.4.3 aPAUSEMACCtrlFramesReceived` + * from the standard. + */ +struct ethtool_pause_stats { + u64 tx_pause_frames; + u64 rx_pause_frames; +}; + /** * struct ethtool_ops - optional netdev operations * @supported_coalesce_params: supported types of interrupt coalescing. @@ -282,6 +303,9 @@ bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, * Returns a negative error code or zero. * @get_ringparam: Report ring sizes * @set_ringparam: Set ring sizes. Returns a negative error code or zero. + * @get_pause_stats: Report pause frame statistics. Drivers must not zero + * statistics which they don't report. The stats structure is initialized + * to ETHTOOL_STAT_NOT_SET indicating driver does not report statistics. * @get_pauseparam: Report pause parameters * @set_pauseparam: Set pause parameters. Returns a negative error code * or zero. @@ -418,6 +442,8 @@ struct ethtool_ops { struct ethtool_ringparam *); int (*set_ringparam)(struct net_device *, struct ethtool_ringparam *); + void (*get_pause_stats)(struct net_device *dev, + struct ethtool_pause_stats *pause_stats); void (*get_pauseparam)(struct net_device *, struct ethtool_pauseparam*); int (*set_pauseparam)(struct net_device *, |