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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 <[email protected]>
Reviewed-by: Majd Dibbiny <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
This commit is contained in:
Yonatan Cohen 2017-11-13 10:51:16 +02:00 • committed by Doug Ledford
commit 18bd907292
3 changed files with 22 additions and 0 deletions
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6
include/rdma/ib_verbs.h
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@ -315,6 +315,11 @@ enum ib_cq_attr_mask {
IB_CQ_MODERATE = 1 << 0,
};
struct ib_cq_caps {
u16 max_cq_moderation_count;
u16 max_cq_moderation_period;
};
struct ib_device_attr {
u64 fw_ver;
__be64 sys_image_guid;
@ -365,6 +370,7 @@ struct ib_device_attr {
u32 max_wq_type_rq;
u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */
struct ib_tm_caps tm_caps;
struct ib_cq_caps cq_caps;
};
enum ib_mtu {