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IB/uverbs: Add CQ moderation capability to query_device

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The query_device function can now obtain the maximum values for
cq_max_count and cq_period, needed for CQ moderation.
cq_max_count is a 16 bits number that determines the number
of CQEs to accumulate before generating an event.
cq_period is a 16 bits number that determines the timeout in micro
seconds from the last event generated, upon which a new event will
be generated even if cq_max_count was not reached.

Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yonatan Cohen
2017-11-13 10:51:16 +02:00
committed by Doug Ledford
parent b0e9df6da2
commit 18bd907292
3 changed files with 22 additions and 0 deletions
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7
include/uapi/rdma/ib_user_verbs.h
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@@ -125,6 +125,12 @@ struct ib_uverbs_comp_event_desc {
__u64 cq_handle;
};
struct ib_uverbs_cq_moderation_caps {
__u16 max_cq_moderation_count;
__u16 max_cq_moderation_period;
__u32 reserved;
};
/*
* All commands from userspace should start with a __u32 command field
* followed by __u16 in_words and out_words fields (which give the
@@ -263,6 +269,7 @@ struct ib_uverbs_ex_query_device_resp {
__u32 max_wq_type_rq;
__u32 raw_packet_caps;
struct ib_uverbs_tm_caps tm_caps;
struct ib_uverbs_cq_moderation_caps cq_moderation_caps;
};
struct ib_uverbs_query_port {