IB/uverbs: Expose XRQ capabilities

Make XRQ capabilities available via ibv_query_device() verb.

Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Reviewed-by: Yossi Itigin <yosefe@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index e69038a..e0cb998 100644 (file)
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -3868,6 +3868,16 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
 
        resp.raw_packet_caps = attr.raw_packet_caps;
        resp.response_length += sizeof(resp.raw_packet_caps);
+
+       if (ucore->outlen < resp.response_length + sizeof(resp.xrq_caps))
+               goto end;
+
+       resp.xrq_caps.max_rndv_hdr_size = attr.xrq_caps.max_rndv_hdr_size;
+       resp.xrq_caps.max_num_tags      = attr.xrq_caps.max_num_tags;
+       resp.xrq_caps.max_ops           = attr.xrq_caps.max_ops;
+       resp.xrq_caps.max_sge           = attr.xrq_caps.max_sge;
+       resp.xrq_caps.flags             = attr.xrq_caps.flags;
+       resp.response_length += sizeof(resp.xrq_caps);
 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 d5434bb..9a0b647 100644 (file)
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -236,6 +236,20 @@ struct ib_uverbs_rss_caps {
        __u32 reserved;
 };
 
+struct ib_uverbs_tm_caps {
+       /* Max size of rendezvous request message */
+       __u32 max_rndv_hdr_size;
+       /* Max number of entries in tag matching list */
+       __u32 max_num_tags;
+       /* TM flags */
+       __u32 flags;
+       /* Max number of outstanding list operations */
+       __u32 max_ops;
+       /* Max number of SGE in tag matching entry */
+       __u32 max_sge;
+       __u32 reserved;
+};
+
 struct ib_uverbs_ex_query_device_resp {
        struct ib_uverbs_query_device_resp base;
        __u32 comp_mask;
@@ -247,6 +261,7 @@ struct ib_uverbs_ex_query_device_resp {
        struct ib_uverbs_rss_caps rss_caps;
        __u32  max_wq_type_rq;
        __u32 raw_packet_caps;
+       struct ib_uverbs_tm_caps xrq_caps;
 };
 
 struct ib_uverbs_query_port {