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authorLeon Romanovsky <leonro@mellanox.com>2017-06-22 16:10:38 +0300
committerLeon Romanovsky <leon@kernel.org>2017-08-10 13:28:09 +0300
commitc3f66f7b0052ea854744372fdaae7817f5358e4f (patch)
treee48537631cd32b2c09ede49b81181b218f36ef02
parent7d02f605f0dce0ef1b76aeffe2d36794738f24a0 (diff)
RDMA/netlink: Implement nldev port doit callback
Provide ability to get specific to device and port information. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com>
-rw-r--r--drivers/infiniband/core/nldev.c44
1 files changed, 44 insertions, 0 deletions
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,
},
};

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