From 0e2d00eb6fd45f2a645f4874286bdc5b4b53782b Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Thu, 13 Jun 2019 21:38:18 -0300 Subject: RDMA: Add NLDEV_GET_CHARDEV to allow char dev discovery and autoload Allow userspace to issue a netlink query against the ib_device for something like "uverbs" and get back the char dev name, inode major/minor, and interface ABI information for "uverbs0". Since we are now in netlink this can also trigger a module autoload to make the uverbs device come into existence. Largely this will let us replace searching and reading inside sysfs to setup devices, and provides an alternative (using driver_id) to device name based provider binding for things like rxe. Signed-off-by: Jason Gunthorpe Signed-off-by: Doug Ledford --- include/rdma/ib_verbs.h | 4 ++++ include/rdma/rdma_netlink.h | 2 ++ 2 files changed, 6 insertions(+) (limited to 'include/rdma') diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 973514ea17a7..a1265e9ce2d1 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2684,10 +2684,14 @@ struct ib_device { u32 iw_driver_flags; }; +struct ib_client_nl_info; struct ib_client { const char *name; void (*add) (struct ib_device *); void (*remove)(struct ib_device *, void *client_data); + int (*get_nl_info)(struct ib_device *ibdev, void *client_data, + struct ib_client_nl_info *res); + int (*get_global_nl_info)(struct ib_client_nl_info *res); /* Returns the net_dev belonging to this ib_client and matching the * given parameters. diff --git a/include/rdma/rdma_netlink.h b/include/rdma/rdma_netlink.h index 10732ab31ba2..c7acbe083428 100644 --- a/include/rdma/rdma_netlink.h +++ b/include/rdma/rdma_netlink.h @@ -110,4 +110,6 @@ void rdma_link_register(struct rdma_link_ops *ops); void rdma_link_unregister(struct rdma_link_ops *ops); #define MODULE_ALIAS_RDMA_LINK(type) MODULE_ALIAS("rdma-link-" type) +#define MODULE_ALIAS_RDMA_CLIENT(type) MODULE_ALIAS("rdma-client-" type) + #endif /* _RDMA_NETLINK_H */ -- cgit v1.2.3