From: Ariel Levkovich <lariel@xxxxxxxxxxxx>
This change allows vendors to report device memory capability
max_dm_size - to user via uverbs command.
Signed-off-by: Ariel Levkovich <lariel@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 6 ++++++
include/rdma/ib_verbs.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index f38600490fd1..13cb5e4deb86 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -4006,6 +4006,12 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
resp.cq_moderation_caps.max_cq_moderation_period =
attr.cq_caps.max_cq_moderation_period;
resp.response_length += sizeof(resp.cq_moderation_caps);
+
+ if (ucore->outlen < resp.response_length + sizeof(resp.max_dm_size))
+ goto end;
+
+ resp.max_dm_size = attr.max_dm_size;
+ resp.response_length += sizeof(resp.max_dm_size);
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 a6dba77c1b28..ed425627efd8 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -372,6 +372,7 @@ struct ib_device_attr {
u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */
struct ib_tm_caps tm_caps;
struct ib_cq_caps cq_caps;
+ u64 max_dm_size;
};
enum ib_mtu {
--
2.14.3
--
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