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net: ipv6: select DST_CACHE from IPV6_RPL_LWTUNNEL

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[ Upstream commit 93c21077bb9ba08807c459982d440dbbee4c7af3 ]

The rpl sr tunnel code contains calls to dst_cache_*() which are
only present when the dst cache is built.
Select DST_CACHE to build the dst cache, similar to other kconfig
options in the same file.
Compiling the rpl sr tunnel without DST_CACHE will lead to linker
errors.

Fixes: a7a29f9c36 ("net: ipv6: add rpl sr tunnel")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@kernel.org> # build-tested
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Weißschuh 2024-09-16 20:57:13 +02:00 committed by Greg Kroah-Hartman
parent 338a0582b2
commit 98d14164c0
1 changed files with 1 additions and 0 deletions
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net/ipv6/Kconfig
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@ -322,6 +322,7 @@ config IPV6_RPL_LWTUNNEL
bool "IPv6: RPL Source Routing Header support"
depends on IPV6
select LWTUNNEL
select DST_CACHE
help
Support for RFC6554 RPL Source Routing Header using the lightweight
tunnels mechanism.