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| author |   Jason Gunthorpe <jgg@mellanox.com> | 2019-06-13 21:38:19 -0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-06-18 22:44:08 -0400 |
| commit | 8f71bb0030b8816f57be142f95b3c7189c6eaf4c (patch) | |
| tree | fc55bb9f34f8af9c06fe52c40ba1f18a0996ce7e /drivers/infiniband/core/ucma.c | |
| parent | RDMA: Add NLDEV_GET_CHARDEV to allow char dev discovery and autoload (diff) | |
| download | linux-dev-8f71bb0030b8816f57be142f95b3c7189c6eaf4c.tar.xz linux-dev-8f71bb0030b8816f57be142f95b3c7189c6eaf4c.zip | |
RDMA: Report available cdevs through RDMA_NLDEV_CMD_GET_CHARDEV
Update the struct ib_client for all modules exporting cdevs related to the
ibdevice to also implement RDMA_NLDEV_CMD_GET_CHARDEV. All cdevs are now
autoloadable and discoverable by userspace over netlink instead of relying
on sysfs.
uverbs also exposes the DRIVER_ID for drivers that are able to support
driver id binding in rdma-core.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/ucma.c')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 39823c842202..0274e9b704be 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -52,6 +52,8 @@ #include <rdma/rdma_cm_ib.h> #include <rdma/ib_addr.h> #include <rdma/ib.h> +#include <rdma/rdma_netlink.h> +#include "core_priv.h" MODULE_AUTHOR("Sean Hefty"); MODULE_DESCRIPTION("RDMA Userspace Connection Manager Access"); @@ -1788,6 +1790,19 @@ static struct miscdevice ucma_misc = { .fops = &ucma_fops, }; +static int ucma_get_global_nl_info(struct ib_client_nl_info *res) +{ + res->abi = RDMA_USER_CM_ABI_VERSION; + res->cdev = ucma_misc.this_device; + return 0; +} + +static struct ib_client rdma_cma_client = { + .name = "rdma_cm", + .get_global_nl_info = ucma_get_global_nl_info, +}; +MODULE_ALIAS_RDMA_CLIENT("rdma_cm"); + static ssize_t show_abi_version(struct device *dev, struct device_attribute *attr, char *buf) @@ -1816,7 +1831,14 @@ static int __init ucma_init(void) ret = -ENOMEM; goto err2; } + + ret = ib_register_client(&rdma_cma_client); + if (ret) + goto err3; + return 0; +err3: + unregister_net_sysctl_table(ucma_ctl_table_hdr); err2: device_remove_file(ucma_misc.this_device, &dev_attr_abi_version); err1: @@ -1826,6 +1848,7 @@ err1: static void __exit ucma_cleanup(void) { + ib_unregister_client(&rdma_cma_client); unregister_net_sysctl_table(ucma_ctl_table_hdr); device_remove_file(ucma_misc.this_device, &dev_attr_abi_version); misc_deregister(&ucma_misc); |