netdev - [PATCH 35/51] team: Stop using NLA

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Message-Id: <1333335521-1348-36-git-send-email-davem@davemloft.net>
Date:	Sun,  1 Apr 2012 22:58:25 -0400
From:	"David S. Miller" <davem@...emloft.net>
To:	netdev@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 35/51] team: Stop using NLA_PUT*().

From: "David S. Miller" <davem@...emloft.net>

These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 drivers/net/team/team.c |   50 +++++++++++++++++++++++++++++-----------------
 1 files changed, 31 insertions(+), 19 deletions(-)

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 8f81805..0db6e66 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1248,7 +1248,8 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
 	if (IS_ERR(hdr))
 		return PTR_ERR(hdr);
 
-	NLA_PUT_U32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex);
+	if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
+		goto nla_put_failure;
 	option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
 	if (!option_list)
 		return -EMSGSIZE;
@@ -1263,24 +1264,31 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
 		option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
 		if (!option_item)
 			goto nla_put_failure;
-		NLA_PUT_STRING(skb, TEAM_ATTR_OPTION_NAME, option->name);
+		if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
+			goto nla_put_failure;
 		if (option->changed) {
-			NLA_PUT_FLAG(skb, TEAM_ATTR_OPTION_CHANGED);
+			if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
+				goto nla_put_failure;
 			option->changed = false;
 		}
-		if (option->removed)
-			NLA_PUT_FLAG(skb, TEAM_ATTR_OPTION_REMOVED);
+		if (option->removed &&
+		    nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
+			goto nla_put_failure;
 		switch (option->type) {
 		case TEAM_OPTION_TYPE_U32:
-			NLA_PUT_U8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32);
+			if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
+				goto nla_put_failure;
 			team_option_get(team, option, &arg);
-			NLA_PUT_U32(skb, TEAM_ATTR_OPTION_DATA, arg);
+			if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, arg))
+				goto nla_put_failure;
 			break;
 		case TEAM_OPTION_TYPE_STRING:
-			NLA_PUT_U8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING);
+			if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
+				goto nla_put_failure;
 			team_option_get(team, option, &arg);
-			NLA_PUT_STRING(skb, TEAM_ATTR_OPTION_DATA,
-				       (char *) arg);
+			if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
+					   (char *) arg))
+				goto nla_put_failure;
 			break;
 		default:
 			BUG();
@@ -1420,7 +1428,8 @@ static int team_nl_fill_port_list_get(struct sk_buff *skb,
 	if (IS_ERR(hdr))
 		return PTR_ERR(hdr);
 
-	NLA_PUT_U32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex);
+	if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
+		goto nla_put_failure;
 	port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
 	if (!port_list)
 		return -EMSGSIZE;
@@ -1434,17 +1443,20 @@ static int team_nl_fill_port_list_get(struct sk_buff *skb,
 		port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
 		if (!port_item)
 			goto nla_put_failure;
-		NLA_PUT_U32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex);
+		if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
+			goto nla_put_failure;
 		if (port->changed) {
-			NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_CHANGED);
+			if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
+				goto nla_put_failure;
 			port->changed = false;
 		}
-		if (port->removed)
-			NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_REMOVED);
-		if (port->linkup)
-			NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_LINKUP);
-		NLA_PUT_U32(skb, TEAM_ATTR_PORT_SPEED, port->speed);
-		NLA_PUT_U8(skb, TEAM_ATTR_PORT_DUPLEX, port->duplex);
+		if ((port->removed &&
+		     nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
+		    (port->linkup &&
+		     nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
+		    nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->speed) ||
+		    nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->duplex))
+			goto nla_put_failure;
 		nla_nest_end(skb, port_item);
 	}
 
-- 
1.7.7.6

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