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| author | Yonatan Cohen <yonatanc@mellanox.com> | 2017-11-13 10:51:13 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-11-13 16:59:22 -0500 |
| commit | 869ddcf8b351ace5bf8860f3cd6265dccb382426 (patch) | |
| tree | 52e0134b73d34d90a96c6a0c036c8ca8da0fc4ed /include/rdma | |
| parent | bc52e9ca74b9a395897bb640c6671b2cbf716032 (diff) | |
| download | linux-869ddcf8b351ace5bf8860f3cd6265dccb382426.tar.bz2 | |
IB/uverbs: Allow CQ moderation with modify CQ
Uverbs support in modify_cq for CQ moderation only.
Gives ability to change cq_max_count and cq_period.
CQ moderation enhance performance by moderating the number
of CQEs needed to create an event instead of application
having to suffer from event per-CQE.
To achieve CQ moderation the application needs to set cq_max_count
and cq_period.
cq_max_count - defines the number of CQEs needed to create an event.
cq_period - defines the timeout (micro seconds) between last
event and a new one that will occur even if
cq_max_count was not satisfied
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>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 0b671982bbb3..8e0d3780ce4e 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -311,6 +311,10 @@ struct ib_cq_init_attr { u32 flags; }; +enum ib_cq_attr_mask { + IB_CQ_MODERATE = 1 << 0, +}; + struct ib_device_attr { u64 fw_ver; __be64 sys_image_guid; |