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| author |   Inbar Karmy <inbark@mellanox.com> | 2017-11-20 16:14:30 +0200 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@mellanox.com> | 2018-03-26 13:46:46 -0700 |
| commit | e1577c1c881b09e9f15a743a4a1907815b74d0f7 (patch) | |
| tree | 611ccfe349918ef69ea4603ffc48eeb1c9aee1ee /include/uapi/linux/ethtool.h | |
| parent | net/mlx5e: Expose PFC stall prevention counters (diff) | |
| download | linux-dev-e1577c1c881b09e9f15a743a4a1907815b74d0f7.tar.xz linux-dev-e1577c1c881b09e9f15a743a4a1907815b74d0f7.zip | |
ethtool: Add support for configuring PFC stall prevention in ethtool
In the event where the device unexpectedly becomes unresponsive
for a long period of time, flow control mechanism may propagate
pause frames which will cause congestion spreading to the entire
network.
To prevent this scenario, when the device is stalled for a period
longer than a pre-configured timeout, flow control mechanisms are
automatically disabled.
This patch adds support for the ETHTOOL_PFC_STALL_PREVENTION
as a tunable.
This API provides support for configuring flow control storm prevention
timeout (msec).
Signed-off-by: Inbar Karmy <inbark@mellanox.com>
Cc: Michal Kubecek <mkubecek@suse.cz>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'include/uapi/linux/ethtool.h')
| -rw-r--r-- | include/uapi/linux/ethtool.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index 20da156aaf64..4ca65b56084f 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -217,10 +217,14 @@ struct ethtool_value { __u32 data; }; +#define PFC_STORM_PREVENTION_AUTO 0xffff +#define PFC_STORM_PREVENTION_DISABLE 0 + enum tunable_id { ETHTOOL_ID_UNSPEC, ETHTOOL_RX_COPYBREAK, ETHTOOL_TX_COPYBREAK, + ETHTOOL_PFC_PREVENTION_TOUT, /* timeout in msecs */ /* * Add your fresh new tubale attribute above and remember to update * tunable_strings[] in net/core/ethtool.c |