[rdma-next,V1,6/8] IB/core: Add offload arithmetic operations support

Commit Message

Leon Romanovsky Feb. 23, 2016, 8:25 a.m. UTC

From: Leon Romanovsky <[e-mail]>

The offload arithmetic operations support allows to the user to
benefit from the parallel calculation of several input vectors of
equal length.

The newly added flag indicates this ability.

Signed-off-by: Leon Romanovsky <[e-mail]>
Reviewed-by: Matan Barak <[e-mail]>
---
 drivers/infiniband/core/uverbs_cmd.c | 3 +++
 include/rdma/ib_verbs.h              | 8 +++++++-
 include/uapi/rdma/ib_user_verbs.h    | 5 +++++
 3 files changed, 15 insertions(+), 1 deletion(-)

Patch

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 6887252..3a3f573 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -3638,6 +3638,9 @@  int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
 	resp.hca_core_clock = attr.hca_core_clock;
 	resp.response_length += sizeof(resp.hca_core_clock);
 
+	resp.device_cap_flags2 = upper_32_bits(attr.device_cap_flags);
+	resp.response_length += sizeof(resp.device_cap_flags2);
+
 end:
 	err = ib_copy_to_udata(ucore, &resp, resp.response_length);
 	return err;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 2ff1fd1..51aabf8 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -208,10 +208,16 @@  enum ib_device_cap_flags {
 	 * of I/O operations with single completion queue managed
 	 * by hardware.
 	 */
-	IB_DEVICE_CROSS_CHANNEL		= (1 << 27),
+	IB_DEVICE_CROSS_CHANNEL			= (1 << 27),
 	IB_DEVICE_MANAGED_FLOW_STEERING		= (1 << 29),
 	IB_DEVICE_SIGNATURE_HANDOVER		= (1 << 30),
 	IB_DEVICE_ON_DEMAND_PAGING		= (1 << 31),
+	/*
+	 * The offload arithmetic operations support allows to
+	 * the user to benefit from the parallel calculation of
+	 * several input vectors of equal length.
+	 */
+	IB_DEVICE_VECTOR_CALC                   = (1ULL << 32),
 };
 
 enum ib_signature_prot_cap {
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index 8126c14..e024c82 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -226,6 +226,11 @@  struct ib_uverbs_ex_query_device_resp {
 	struct ib_uverbs_odp_caps odp_caps;
 	__u64 timestamp_mask;
 	__u64 hca_core_clock; /* in KHZ */
+	/*
+	 * Original capability field is limited
+	 * by __u32 variable.  Need to increase this field
+	 */
+	__u64 device_cap_flags2;
 };
 
 struct ib_uverbs_query_port {