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IB/uverbs: Expose RSS related capabilities

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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@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yishai Hadas 2016-08-28 11:28:44 +03:00 committed by Doug Ledford
parent ccf2056260
commit 47adf2f4f5
2 changed files with 31 additions and 0 deletions
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17
drivers/infiniband/core/uverbs_cmd.c
View File

@ -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;

14
include/uapi/rdma/ib_user_verbs.h
View File

@ -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 {