diff options
| author |   Leon Romanovsky <leonro@mellanox.com> | 2017-06-15 20:33:08 +0300 |
|---|---|---|
| committer |   Leon Romanovsky <leon@kernel.org> | 2017-08-10 13:28:08 +0300 |
| commit | e5c9469efcb18a6b7aed5e6f32e478b0298ad968 (patch) | |
| tree | c8580753c056d026273c01aeb3f0ba7b2c37c919 /drivers/infiniband/core/nldev.c | |
| parent | RDMA/netlink: Implement nldev device dumpit calback (diff) | |
| download | linux-dev-e5c9469efcb18a6b7aed5e6f32e478b0298ad968.tar.xz linux-dev-e5c9469efcb18a6b7aed5e6f32e478b0298ad968.zip | |
RDMA/netlink: Add nldev device doit implementation
Provide ability to query specific device.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Diffstat (limited to 'drivers/infiniband/core/nldev.c')
| -rw-r--r-- | drivers/infiniband/core/nldev.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 4b8b0f5d5344..666940f2b49a 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -53,6 +53,45 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device) return 0; } +static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; + struct ib_device *device; + struct sk_buff *msg; + 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; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, + RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), + 0, 0); + + err = fill_dev_info(msg, device); + if (err) { + nlmsg_free(msg); + return err; + } + + nlmsg_end(msg, nlh); + + return rdma_nl_unicast(msg, NETLINK_CB(skb).portid); +} + static int _nldev_get_dumpit(struct ib_device *device, struct sk_buff *skb, struct netlink_callback *cb, @@ -92,6 +131,7 @@ static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) static const struct rdma_nl_cbs nldev_cb_table[] = { [RDMA_NLDEV_CMD_GET] = { + .doit = nldev_get_doit, .dump = nldev_get_dumpit, }, }; |