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| author | David Ahern <dsa@cumulusnetworks.com> | 2017-02-08 09:29:00 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-08 12:52:11 -0500 |
| commit | 2bd137de531367fb573d90150d1872cb2a2095f7 (patch) | |
| tree | 7c352cf2a83c4bc7f47ea612f8deee36638b36c2 /include | |
| parent | a11a7f71cac209c7c9cca66eb506e1ebb033a3b3 (diff) | |
| download | linux-stable-2bd137de531367fb573d90150d1872cb2a2095f7.tar.gz linux-stable-2bd137de531367fb573d90150d1872cb2a2095f7.tar.bz2 linux-stable-2bd137de531367fb573d90150d1872cb2a2095f7.zip | |
lwtunnel: valid encap attr check should return 0 when lwtunnel is disabled
An error was reported upgrading to 4.9.8:
root@Typhoon:~# ip route add default table 210 nexthop dev eth0 via 10.68.64.1
weight 1 nexthop dev eth0 via 10.68.64.2 weight 1
RTNETLINK answers: Operation not supported
The problem occurs when CONFIG_LWTUNNEL is not enabled and a multipath
route is submitted.
The point of lwtunnel_valid_encap_type_attr is catch modules that
need to be loaded before any references are taken with rntl held. With
CONFIG_LWTUNNEL disabled, there will be no modules to load so the
lwtunnel_valid_encap_type_attr stub should just return 0.
Fixes: 9ed59592e3e3 ("lwtunnel: fix autoload of lwt modules")
Reported-by: pupilla@libero.it
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/lwtunnel.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/net/lwtunnel.h b/include/net/lwtunnel.h index 73dd87647460..0388b9c5f5e2 100644 --- a/include/net/lwtunnel.h +++ b/include/net/lwtunnel.h @@ -178,7 +178,10 @@ static inline int lwtunnel_valid_encap_type(u16 encap_type) } static inline int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int len) { - return -EOPNOTSUPP; + /* return 0 since we are not walking attr looking for + * RTA_ENCAP_TYPE attribute on nexthops. + */ + return 0; } static inline int lwtunnel_build_state(struct net_device *dev, u16 encap_type, |