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| author | Yonatan Cohen <yonatanc@mellanox.com> | 2017-11-13 11:51:13 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-11-14 00:59:22 +0300 |
| commit | 869ddcf8b351ace5bf8860f3cd6265dccb382426 (patch) | |
| tree | 52e0134b73d34d90a96c6a0c036c8ca8da0fc4ed /include/uapi/rdma/ib_user_verbs.h | |
| parent | bc52e9ca74b9a395897bb640c6671b2cbf716032 (diff) | |
| download | linux-869ddcf8b351ace5bf8860f3cd6265dccb382426.tar.xz | |
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/ib_user_verbs.h')
| -rw-r--r-- | include/uapi/rdma/ib_user_verbs.h | 15 |
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 */ |