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authorAharon Landau <aharonl@nvidia.com>2021-10-08 15:24:32 +0300
committerJason Gunthorpe <jgg@nvidia.com>2021-10-12 12:48:05 -0300
commit5e2ddd1e598273d77f653c70df96fc417a2d0a85 (patch)
tree5e9f9d4e2d2a48dfa3f598fcfd93a8ef5305d830 /include/rdma
parent0dc89684605e8b60af645988d3e0d80a57b6e937 (diff)
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 'include/rdma')
-rw-r--r--include/rdma/ib_verbs.h13
-rw-r--r--include/rdma/rdma_counter.h2
2 files changed, 15 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);
diff --git a/include/rdma/rdma_counter.h b/include/rdma/rdma_counter.h
index 0295b22cd1cd..45d5481a7846 100644
--- a/include/rdma/rdma_counter.h
+++ b/include/rdma/rdma_counter.h
@@ -63,4 +63,6 @@ int rdma_counter_get_mode(struct ib_device *dev, u32 port,
enum rdma_nl_counter_mode *mode,
enum rdma_nl_counter_mask *mask);
+int rdma_counter_modify(struct ib_device *dev, u32 port,
+ unsigned int index, bool enable);
#endif /* _RDMA_COUNTER_H_ */