diff options
| author | Roopa Prabhu <roopa@cumulusnetworks.com> | 2015-07-30 13:34:54 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-31 15:21:30 -0700 |
| commit | bf21563acc1de2391d21ac2141c3471aa4815c1a (patch) | |
| tree | 4cf1e6e3ec1d76e730778ec0d8b2a7efbe6b9499 /net/mpls | |
| parent | 343d60aada5a358ca186d6e9e353230379c426d8 (diff) | |
| download | lwn-bf21563acc1de2391d21ac2141c3471aa4815c1a.tar.gz lwn-bf21563acc1de2391d21ac2141c3471aa4815c1a.zip | |
af_mpls: fix undefined reference to ip6_route_output
Undefined reference to ip6_route_output and ip_route_output
was reported with CONFIG_INET=n and CONFIG_IPV6=n.
This patch uses ipv6_stub_impl.ipv6_dst_lookup instead of
ip6_route_output. And wraps affected code under
IS_ENABLED(CONFIG_INET) and IS_ENABLED(CONFIG_IPV6).
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reported-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mpls')
| -rw-r--r-- | net/mpls/af_mpls.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c index 49f1b0e41bdf..88cfaa241c07 100644 --- a/net/mpls/af_mpls.c +++ b/net/mpls/af_mpls.c @@ -15,7 +15,10 @@ #include <net/ip_fib.h> #include <net/netevent.h> #include <net/netns/generic.h> -#include <net/ip6_route.h> +#if IS_ENABLED(CONFIG_IPV6) +#include <net/ipv6.h> +#include <net/addrconf.h> +#endif #include "internal.h" #define LABEL_NOT_SPECIFIED (1<<20) @@ -331,6 +334,7 @@ static unsigned find_free_label(struct net *net) return LABEL_NOT_SPECIFIED; } +#if IS_ENABLED(CONFIG_INET) static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr) { struct net_device *dev = NULL; @@ -347,30 +351,49 @@ static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr) ip_rt_put(rt); -errout: return dev; +errout: + return ERR_PTR(-ENODEV); +} +#else +static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr) +{ + return ERR_PTR(-EAFNOSUPPORT); } +#endif +#if IS_ENABLED(CONFIG_IPV6) static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr) { struct net_device *dev = NULL; struct dst_entry *dst; struct flowi6 fl6; + int err; + + if (!ipv6_stub) + return ERR_PTR(-EAFNOSUPPORT); memset(&fl6, 0, sizeof(fl6)); memcpy(&fl6.daddr, addr, sizeof(struct in6_addr)); - dst = ip6_route_output(net, NULL, &fl6); - if (dst->error) + err = ipv6_stub->ipv6_dst_lookup(net, NULL, &dst, &fl6); + if (err) goto errout; dev = dst->dev; dev_hold(dev); - -errout: dst_release(dst); return dev; + +errout: + return ERR_PTR(err); } +#else +static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr) +{ + return ERR_PTR(-EAFNOSUPPORT); +} +#endif static struct net_device *find_outdev(struct net *net, struct mpls_route_config *cfg) @@ -425,10 +448,12 @@ static int mpls_route_add(struct mpls_route_config *cfg) if (cfg->rc_output_labels > MAX_NEW_LABELS) goto errout; - err = -ENODEV; dev = find_outdev(net, cfg); - if (!dev) + if (IS_ERR(dev)) { + err = PTR_ERR(dev); + dev = NULL; goto errout; + } /* Ensure this is a supported device */ err = -EINVAL; |