[PATCH -next 2/2] nbd: use the structured req attr check

[Jakub Kicinski <kuba@kernel.org>]

Use the macro for checking presence of required attributes.
It has the advantage of reporting to the user which attr
was missing in a machine-readable format (extack).

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 drivers/block/nbd.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 53e4bb754fd9..c0b1611b9665 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1934,11 +1934,11 @@ static int nbd_genl_connect(struct sk_buff *skb, struct genl_info *info)
 			return -EINVAL;
 		}
 	}
-	if (!info->attrs[NBD_ATTR_SOCKETS]) {
+	if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_SOCKETS)) {
 		pr_err("must specify at least one socket\n");
 		return -EINVAL;
 	}
-	if (!info->attrs[NBD_ATTR_SIZE_BYTES]) {
+	if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_SIZE_BYTES)) {
 		pr_err("must specify a size in bytes for the device\n");
 		return -EINVAL;
 	}
@@ -2123,7 +2123,7 @@ static int nbd_genl_disconnect(struct sk_buff *skb, struct genl_info *info)
 	if (!netlink_capable(skb, CAP_SYS_ADMIN))
 		return -EPERM;
 
-	if (!info->attrs[NBD_ATTR_INDEX]) {
+	if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_INDEX)) {
 		pr_err("must specify an index to disconnect\n");
 		return -EINVAL;
 	}
@@ -2161,7 +2161,7 @@ static int nbd_genl_reconfigure(struct sk_buff *skb, struct genl_info *info)
 	if (!netlink_capable(skb, CAP_SYS_ADMIN))
 		return -EPERM;
 
-	if (!info->attrs[NBD_ATTR_INDEX]) {
+	if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_INDEX)) {
 		pr_err("must specify a device to reconfigure\n");
 		return -EINVAL;
 	}
-- 
2.39.2