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| author |   Aharon Landau <aharonl@nvidia.com> | 2021-10-08 15:24:32 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2021-10-12 12:48:05 -0300 |
| commit | 5e2ddd1e598273d77f653c70df96fc417a2d0a85 (patch) | |
| tree | 5e9f9d4e2d2a48dfa3f598fcfd93a8ef5305d830 /include/rdma/ib_verbs.h | |
| parent | RDMA/counter: Add an is_disabled field in struct rdma_hw_stats (diff) | |
| download | linux-dev-5e2ddd1e598273d77f653c70df96fc417a2d0a85.tar.xz linux-dev-5e2ddd1e598273d77f653c70df96fc417a2d0a85.zip | |
RDMA/counter: Add optional counter support
An optional counter is a driver-specific counter that may be dynamically
enabled/disabled. This enhancement allows drivers to expose counters
which are, for example, mutually exclusive and cannot be enabled at the
same time, counters that might degrades performance, optional debug
counters, etc.
Optional counters are marked with IB_STAT_FLAG_OPTIONAL flag. They are not
exported in sysfs, and must be at the end of all stats, otherwise the
attr->show() in sysfs would get wrong indexes for hwcounters that are
behind optional counters.
Link: https://lore.kernel.org/r/20211008122439.166063-7-markzhang@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Neta Ostrovsky <netao@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to '')
| -rw-r--r-- | include/rdma/ib_verbs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index ae467365706b..2207f60b002f 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -545,12 +545,18 @@ enum ib_port_speed { IB_SPEED_NDR = 128, }; +enum ib_stat_flag { + IB_STAT_FLAG_OPTIONAL = 1 << 0, +}; + /** * struct rdma_stat_desc * @name - The name of the counter + * @flags - Flags of the counter; For example, IB_STAT_FLAG_OPTIONAL */ struct rdma_stat_desc { const char *name; + unsigned int flags; }; /** @@ -2563,6 +2569,13 @@ struct ib_device_ops { struct rdma_hw_stats *stats, u32 port, int index); /** + * modify_hw_stat - Modify the counter configuration + * @enable: true/false when enable/disable a counter + * Return codes - 0 on success or error code otherwise. + */ + int (*modify_hw_stat)(struct ib_device *device, u32 port, + unsigned int counter_index, bool enable); + /** * Allows rdma drivers to add their own restrack attributes. */ int (*fill_res_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr); |