mpls: small cleanup in inet/inet6_fib_lookup_dev()
We recently changed this code from returning NULL to returning ERR_PTR. There are some left over NULL assignments which we can remove. We can preserve the error code from ip_route_output() instead of always returning -ENODEV. Also these functions use a mix of gotos and direct returns. There is no cleanup necessary so I changed the gotos to direct returns. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by: Robert Shearman <rshearma@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -338,14 +338,14 @@ static unsigned find_free_label(struct net *net)
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#if IS_ENABLED(CONFIG_INET)
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static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
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{
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struct net_device *dev = NULL;
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struct net_device *dev;
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struct rtable *rt;
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struct in_addr daddr;
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memcpy(&daddr, addr, sizeof(struct in_addr));
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rt = ip_route_output(net, daddr.s_addr, 0, 0, 0);
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if (IS_ERR(rt))
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goto errout;
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return ERR_CAST(rt);
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dev = rt->dst.dev;
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dev_hold(dev);
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@ -353,8 +353,6 @@ static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
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ip_rt_put(rt);
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return dev;
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errout:
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return ERR_PTR(-ENODEV);
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}
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#else
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static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
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@ -366,7 +364,7 @@ static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
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#if IS_ENABLED(CONFIG_IPV6)
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static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
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{
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struct net_device *dev = NULL;
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struct net_device *dev;
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struct dst_entry *dst;
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struct flowi6 fl6;
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int err;
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@ -378,16 +376,13 @@ static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
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memcpy(&fl6.daddr, addr, sizeof(struct in6_addr));
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err = ipv6_stub->ipv6_dst_lookup(net, NULL, &dst, &fl6);
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if (err)
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goto errout;
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return ERR_PTR(err);
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dev = dst->dev;
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dev_hold(dev);
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dst_release(dst);
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return dev;
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errout:
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return ERR_PTR(err);
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}
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#else
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static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
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