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ipv4: Stop using NLA_PUT*().

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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@davemloft.net>
This commit is contained in:
David S. Miller
2012-04-01 20:39:02 -04:00
parent e549a6b3a5
commit f3756b79e8
6 changed files with 87 additions and 73 deletions
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23
net/ipv4/ip_gre.c
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@@ -1654,17 +1654,18 @@ static int ipgre_fill_info(struct sk_buff *skb, const struct net_device *dev)
struct ip_tunnel *t = netdev_priv(dev);
struct ip_tunnel_parm *p = &t->parms;
NLA_PUT_U32(skb, IFLA_GRE_LINK, p->link);
NLA_PUT_BE16(skb, IFLA_GRE_IFLAGS, p->i_flags);
NLA_PUT_BE16(skb, IFLA_GRE_OFLAGS, p->o_flags);
NLA_PUT_BE32(skb, IFLA_GRE_IKEY, p->i_key);
NLA_PUT_BE32(skb, IFLA_GRE_OKEY, p->o_key);
NLA_PUT_BE32(skb, IFLA_GRE_LOCAL, p->iph.saddr);
NLA_PUT_BE32(skb, IFLA_GRE_REMOTE, p->iph.daddr);
NLA_PUT_U8(skb, IFLA_GRE_TTL, p->iph.ttl);
NLA_PUT_U8(skb, IFLA_GRE_TOS, p->iph.tos);
NLA_PUT_U8(skb, IFLA_GRE_PMTUDISC, !!(p->iph.frag_off & htons(IP_DF)));
if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) ||
nla_put_be16(skb, IFLA_GRE_IFLAGS, p->i_flags) ||
nla_put_be16(skb, IFLA_GRE_OFLAGS, p->o_flags) ||
nla_put_be32(skb, IFLA_GRE_IKEY, p->i_key) ||
nla_put_be32(skb, IFLA_GRE_OKEY, p->o_key) ||
nla_put_be32(skb, IFLA_GRE_LOCAL, p->iph.saddr) ||
nla_put_be32(skb, IFLA_GRE_REMOTE, p->iph.daddr) ||
nla_put_u8(skb, IFLA_GRE_TTL, p->iph.ttl) ||
nla_put_u8(skb, IFLA_GRE_TOS, p->iph.tos) ||
nla_put_u8(skb, IFLA_GRE_PMTUDISC,
!!(p->iph.frag_off & htons(IP_DF))))
goto nla_put_failure;
return 0;
nla_put_failure: