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RDMA/nldev: Allow IB device rename through RDMA netlink

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Provide an option to rename IB device name through RDMA netlink and
limit it to users with ADMIN capability only.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Leon Romanovsky 2018-10-10 09:19:12 +03:00 committed by Doug Ledford
parent d21943dd19
commit 05d940d3a3
2 changed files with 36 additions and 1 deletions
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34
drivers/infiniband/core/nldev.c
View File

@ -646,6 +646,36 @@ err:
return err;
}
static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
u32 index;
int err;
err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
extack);
if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(index);
if (!device)
return -EINVAL;
if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) {
char name[IB_DEVICE_NAME_MAX] = {};
nla_strlcpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
IB_DEVICE_NAME_MAX);
err = ib_device_rename(device, name);
}
put_device(&device->dev);
return err;
}
static int _nldev_get_dumpit(struct ib_device *device,
struct sk_buff *skb,
struct netlink_callback *cb,
@ -1078,6 +1108,10 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
.doit = nldev_get_doit,
.dump = nldev_get_dumpit,
},
[RDMA_NLDEV_CMD_SET] = {
.doit = nldev_set_doit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_PORT_GET] = {
.doit = nldev_port_get_doit,
.dump = nldev_port_get_dumpit,

3
include/uapi/rdma/rdma_netlink.h
View File

@ -227,8 +227,9 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_UNSPEC,
RDMA_NLDEV_CMD_GET, /* can dump */
RDMA_NLDEV_CMD_SET,
/* 2 - 4 are free to use */
/* 3 - 4 are free to use */
RDMA_NLDEV_CMD_PORT_GET = 5, /* can dump */