From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
According to the IB specification, the LID and SM_LID
are 16-bit wide, but to support OmniPath users, export
it as 32-bit value from the beginning.
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/nldev.c | 9 ++++++++-
include/uapi/rdma/rdma_netlink.h | 8 ++++++++
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 7af71d5e52c8..16f1d28bea69 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -45,6 +45,8 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 },
+ [RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 },
+ [RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 },
};
static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
@@ -102,7 +104,12 @@ static int fill_port_info(struct sk_buff *msg,
nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
attr.subnet_prefix, 0))
return -EMSGSIZE;
-
+ if (rdma_protocol_ib(device, port)) {
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid))
+ return -EMSGSIZE;
+ }
return 0;
}
diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index 481003182a35..7d5caaf54126 100644
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/include/uapi/rdma/rdma_netlink.h
@@ -284,6 +284,14 @@ enum rdma_nldev_attr {
*/
RDMA_NLDEV_ATTR_SUBNET_PREFIX, /* u64 */
+ /*
+ * Local Identifier (LID),
+ * According to IB specification, It is 16-bit address assigned
+ * by the Subnet Manager. Extended to be 32-bit for OmniPath users.
+ */
+ RDMA_NLDEV_ATTR_LID, /* u32 */
+ RDMA_NLDEV_ATTR_SM_LID, /* u32 */
+
RDMA_NLDEV_ATTR_MAX
};
#endif /* _UAPI_RDMA_NETLINK_H */
--
2.14.0
--
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