From: Yishai Hadas <yishaih@xxxxxxxxxxxx>
Query RSS related attributes and return them to user-space via the
extended query device uverbs command.
It includes both direct ones (i.e. struct ib_uverbs_rss_caps) and
max_wq_type_rq which may be used in both RSS and non RSS flows.
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 17 +++++++++++++++++
include/uapi/rdma/ib_user_verbs.h | 14 ++++++++++++++
2 files changed, 31 insertions(+)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index f664731..f44e675 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -4173,6 +4173,23 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
resp.device_cap_flags_ex = attr.device_cap_flags;
resp.response_length += sizeof(resp.device_cap_flags_ex);
+
+ if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps))
+ goto end;
+
+ resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
+ resp.rss_caps.max_rwq_indirection_tables =
+ attr.rss_caps.max_rwq_indirection_tables;
+ resp.rss_caps.max_rwq_indirection_table_size =
+ attr.rss_caps.max_rwq_indirection_table_size;
+
+ resp.response_length += sizeof(resp.rss_caps);
+
+ if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq))
+ goto end;
+
+ resp.max_wq_type_rq = attr.max_wq_type_rq;
+ resp.response_length += sizeof(resp.max_wq_type_rq);
end:
err = ib_copy_to_udata(ucore, &resp, resp.response_length);
return err;
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index 7f035f4b..a9ebb47 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -224,6 +224,17 @@ struct ib_uverbs_odp_caps {
__u32 reserved;
};
+struct ib_uverbs_rss_caps {
+ /* Corresponding bit will be set if qp type from
+ * 'enum ib_qp_type' is supported, e.g.
+ * supported_qpts |= 1 << IB_QPT_UD
+ */
+ __u32 supported_qpts;
+ __u32 max_rwq_indirection_tables;
+ __u32 max_rwq_indirection_table_size;
+ __u32 reserved;
+};
+
struct ib_uverbs_ex_query_device_resp {
struct ib_uverbs_query_device_resp base;
__u32 comp_mask;
@@ -232,6 +243,9 @@ struct ib_uverbs_ex_query_device_resp {
__u64 timestamp_mask;
__u64 hca_core_clock; /* in KHZ */
__u64 device_cap_flags_ex;
+ struct ib_uverbs_rss_caps rss_caps;
+ __u32 max_wq_type_rq;
+ __u32 reserved;
};
struct ib_uverbs_query_port {
--
2.7.4
--
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