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geneve: fix build with modular IPV6

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Commit c40e89fd35 ("geneve: configure MTU based on a lower device") added
an IS_ENABLED(CONFIG_IPV6) to geneve, leading to the following link error
with CONFIG_GENEVE=y and CONFIG_IPV6=m:

drivers/net/geneve.o: In function `geneve_link_config':
geneve.c:(.text+0x14c): undefined reference to `rt6_lookup'

Fix this by adding a Kconfig dependency and forcing GENEVE to be a module
when IPV6 is a module.

Fixes: c40e89fd35 ("geneve: configure MTU based on a lower device")
Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tobias Regnery 2018-04-26 12:36:36 +02:00 committed by David S. Miller
parent c2335d67b7
commit 094be0927f
1 changed files with 1 additions and 0 deletions
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1
drivers/net/Kconfig
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@ -198,6 +198,7 @@ config VXLAN
config GENEVE
tristate "Generic Network Virtualization Encapsulation"
depends on INET && NET_UDP_TUNNEL
depends on IPV6 || !IPV6
select NET_IP_TUNNEL
select GRO_CELLS
---help---