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authorYonatan Cohen <yonatanc@mellanox.com>2017-11-13 10:51:13 +0200
committerDoug Ledford <dledford@redhat.com>2017-11-13 16:59:22 -0500
commit869ddcf8b351ace5bf8860f3cd6265dccb382426 (patch)
tree52e0134b73d34d90a96c6a0c036c8ca8da0fc4ed /include/rdma
parentbc52e9ca74b9a395897bb640c6671b2cbf716032 (diff)
downloadlinux-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.h4
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;