From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH rdma-next 19/19] RDMA/netlink: Expose device and port capability masks Date: Wed, 21 Jun 2017 09:05:28 +0300 Message-ID: <20170621060528.3752-20-leon@kernel.org> References: <20170621060528.3752-1-leon@kernel.org> Return-path: In-Reply-To: <20170621060528.3752-1-leon@kernel.org> Sender: netdev-owner@vger.kernel.org To: Doug Ledford Cc: linux-rdma@vger.kernel.org, Chien Tin Tung , Steve Wise , Stephen Hemminger , Jiri Pirko , Ariel Almog , Linux Netdev , Leon Romanovsky List-Id: linux-rdma@vger.kernel.org From: Leon Romanovsky 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 --- 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 250965329592..77135fb29179 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -47,16 +47,35 @@ 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_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 bfafd5996d52..1fff898632f4 100644 --- a/include/uapi/rdma/rdma_netlink.h +++ b/include/uapi/rdma/rdma_netlink.h @@ -262,6 +262,11 @@ 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 */ -- 2.13.1