From: Arkadi Sharshevsky <arkadis@mellanox.com>
Date: Mon, 26 Feb 2018 18:25:42 +0200
Subject: devlink: Fix resource coverity errors
Patch-mainline: v4.16-rc5
Git-commit: 3d18e4f19f37062a0f2cbcf3ac17eaabdde04704
References: bsc#1112374

Fix resource coverity errors.

Fixes: d9f9b9a4d05f ("devlink: Add support for resource abstraction")
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/core/devlink.c |   37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)

--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1695,10 +1695,11 @@ static int devlink_dpipe_table_put(struc
 		goto nla_put_failure;
 
 	if (table->resource_valid) {
-		nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
-				  table->resource_id, DEVLINK_ATTR_PAD);
-		nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
-				  table->resource_units, DEVLINK_ATTR_PAD);
+		if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
+				      table->resource_id, DEVLINK_ATTR_PAD) ||
+		    nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
+				      table->resource_units, DEVLINK_ATTR_PAD))
+			goto nla_put_failure;
 	}
 	if (devlink_dpipe_matches_put(table, skb))
 		goto nla_put_failure;
@@ -2372,20 +2373,22 @@ static int devlink_nl_cmd_resource_set(s
 	return 0;
 }
 
-static void
+static int
 devlink_resource_size_params_put(struct devlink_resource *resource,
 				 struct sk_buff *skb)
 {
 	struct devlink_resource_size_params *size_params;
 
 	size_params = resource->size_params;
-	nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
-			  size_params->size_granularity, DEVLINK_ATTR_PAD);
-	nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
-			  size_params->size_max, DEVLINK_ATTR_PAD);
-	nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
-			  size_params->size_min, DEVLINK_ATTR_PAD);
-	nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit);
+	if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
+			      size_params->size_granularity, DEVLINK_ATTR_PAD) ||
+	    nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
+			      size_params->size_max, DEVLINK_ATTR_PAD) ||
+	    nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
+			      size_params->size_min, DEVLINK_ATTR_PAD) ||
+	    nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
+		return -EMSGSIZE;
+	return 0;
 }
 
 static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
@@ -2409,10 +2412,12 @@ static int devlink_resource_put(struct d
 		nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
 				  resource->size_new, DEVLINK_ATTR_PAD);
 	if (resource->resource_ops && resource->resource_ops->occ_get)
-		nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
-				  resource->resource_ops->occ_get(devlink),
-				  DEVLINK_ATTR_PAD);
-	devlink_resource_size_params_put(resource, skb);
+		if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
+				      resource->resource_ops->occ_get(devlink),
+				      DEVLINK_ATTR_PAD))
+			goto nla_put_failure;
+	if (devlink_resource_size_params_put(resource, skb))
+		goto nla_put_failure;
 	if (list_empty(&resource->resource_list))
 		goto out;