IB/core: Introduce counters read verb (51d7a538) · Commits · 戴 / test

The user supplies counters instance and a reference to an output array of uint64_t. The driver reads the hardware counters values and writes them to the output index location in the user supplied array. All counters values are represented as uint64_t types. To be able to successfully read the data the counters must be first bound to an IB object. Downstream patches will present binding method for flow counters. Reviewed-by:

Yishai Hadas <yishaih@mellanox.com> Signed-off-by:

Raed Salem <raeds@mellanox.com> Signed-off-by:

Leon Romanovsky <leonro@mellanox.com> Signed-off-by:

Jason Gunthorpe <jgg@mellanox.com>

include/rdma/ib_verbs.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -2187,6 +2187,17 @@ struct ib_counters {
		atomic_t usecnt;
		};

		enum ib_read_counters_flags {
		/* prefer read values from driver cache */
		IB_READ_COUNTERS_ATTR_PREFER_CACHED = 1 << 0,
		};

		struct ib_counters_read_attr {
		u64 *counters_buff;
		u32 ncounters;
		u32 flags; /* use enum ib_read_counters_flags */
		};

		struct uverbs_attr_bundle;

		struct ib_device {
		@@ -2461,6 +2472,9 @@ struct ib_device {
		struct ib_counters * (create_counters)(struct ib_device device,
		struct uverbs_attr_bundle *attrs);
		int (destroy_counters)(struct ib_counters counters);
		int (read_counters)(struct ib_counters counters,
		struct ib_counters_read_attr *counters_read_attr,
		struct uverbs_attr_bundle *attrs);

		/**
		* rdma netdev operation

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