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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/uapi/rdma
parentbc52e9ca74b9a395897bb640c6671b2cbf716032 (diff)
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/uapi/rdma')
-rw-r--r--include/uapi/rdma/ib_user_verbs.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index d4e0b53bfc75..cfa09d6095d6 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -100,7 +100,8 @@ enum {
IB_USER_VERBS_EX_CMD_MODIFY_WQ,
IB_USER_VERBS_EX_CMD_DESTROY_WQ,
IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
- IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL
+ IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
+ IB_USER_VERBS_EX_CMD_MODIFY_CQ
};
/*
@@ -1150,6 +1151,18 @@ struct ib_uverbs_ex_destroy_rwq_ind_table {
__u32 ind_tbl_handle;
};
+struct ib_uverbs_cq_moderation {
+ __u16 cq_count;
+ __u16 cq_period;
+};
+
+struct ib_uverbs_ex_modify_cq {
+ __u32 cq_handle;
+ __u32 attr_mask;
+ struct ib_uverbs_cq_moderation attr;
+ __u32 reserved;
+};
+
#define IB_DEVICE_NAME_MAX 64
#endif /* IB_USER_VERBS_H */

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