From c3f66f7b0052ea854744372fdaae7817f5358e4f Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Thu, 22 Jun 2017 16:10:38 +0300 Subject: [PATCH] RDMA/netlink: Implement nldev port doit callback Provide ability to get specific to device and port information. Signed-off-by: Leon Romanovsky Reviewed-by: Steve Wise --- drivers/infiniband/core/nldev.c | 44 +++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 1318e246196a..db9d9ffc1415 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -141,6 +141,49 @@ static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) return ib_enum_all_devs(_nldev_get_dumpit, skb, cb); } +static int nldev_port_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; + u32 port; + int err; + + err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, + nldev_policy, extack); + if (err || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) + return -EINVAL; + + index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); + device = __ib_device_get_by_index(index); + if (!device) + return -EINVAL; + + port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); + if (!rdma_is_port_valid(device, port)) + 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_port_info(msg, device, port); + if (err) { + nlmsg_free(msg); + return err; + } + + nlmsg_end(msg, nlh); + + return rdma_nl_unicast(msg, NETLINK_CB(skb).portid); +} + static int nldev_port_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) { @@ -203,6 +246,7 @@ static const struct rdma_nl_cbs nldev_cb_table[] = { .dump = nldev_get_dumpit, }, [RDMA_NLDEV_CMD_PORT_GET] = { + .doit = nldev_port_get_doit, .dump = nldev_port_get_dumpit, }, }; -- 2.20.1