[PATCH rdma-next V2 19/27] RDMA/netlink: Expose device and port capability masks
From: Leon Romanovsky <hidden>
Date: 2017-07-03 06:28:22
Also in:
linux-rdma
Subsystem:
infiniband subsystem, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
From: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> The port capability mask is exposed to user space via sysfs interface, while device capabilities are available for verbs only. This patch provides those capabilities through netlink interface. Signed-off-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Reviewed-by: Steve Wise <redacted> --- drivers/infiniband/core/nldev.c | 19 +++++++++++++++++++ include/uapi/rdma/rdma_netlink.h | 5 +++++ 2 files changed, 24 insertions(+)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 533ac72a05b8..21e75928400c 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c@@ -50,18 +50,37 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device) return -EMSGSIZE; if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device))) return -EMSGSIZE; + + BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64)); + if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, + device->attrs.device_cap_flags, 0)) + return -EMSGSIZE; + return 0; } static int fill_port_info(struct sk_buff *msg, struct ib_device *device, u32 port) { + struct ib_port_attr attr; + int ret; + if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index)) return -EMSGSIZE; if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, device->name)) return -EMSGSIZE; if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) return -EMSGSIZE; + + ret = ib_query_port(device, port, &attr); + if (ret) + return ret; + + BUILD_BUG_ON(sizeof(attr.port_cap_flags) > sizeof(u64)); + if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, + (u64)attr.port_cap_flags, 0)) + return -EMSGSIZE; + return 0; }
diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index 1d064fedfa9a..8fc5278d07d6 100644
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/include/uapi/rdma/rdma_netlink.h@@ -257,6 +257,11 @@ enum rdma_nldev_attr { */ RDMA_NLDEV_ATTR_PORT_INDEX, /* u32 */ + /* + * Device and port capabilities + */ + RDMA_NLDEV_ATTR_CAP_FLAGS, /* u64 */ + RDMA_NLDEV_ATTR_MAX }; #endif /* _UAPI_RDMA_NETLINK_H */
--
2.13.2
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