[openwrt/openwrt] kernel: hack-5.10: make UDP tunneling user-selectable

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/1013bf433bb8241230e0b73820a600578fcaadab

commit 1013bf433bb8241230e0b73820a600578fcaadab
Author: Adrian Schmutzler <freifunk at adrianschmutzler.de>
AuthorDate: Tue Feb 16 23:25:00 2021 +0100

    kernel: hack-5.10: make UDP tunneling user-selectable
    
    This applies another patch from 5.4 to 5.10 as well:
    de09355f74c3 ("kernel/hack-5.4: make UDP tunneling user-selectable")
    
    UDP tunneling support isn't user-selectable, but it's required by WireGuard
    which is, for the time being, an out-of-tree module. We currently work around
    this issue by selecting an unrelated module which depends on UDP tunnelling
    (VXLAN). This is inconvenient, as it implies this unrelated module needs to be
    built-in when doing a monolithic build.
    
    Fix this inconvenience by making UDP tunneling user-selectable in the kernel
    configuration.
    
    Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
 target/linux/generic/hack-5.10/249-udp-tunnel-selection.patch | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/target/linux/generic/hack-5.10/249-udp-tunnel-selection.patch b/target/linux/generic/hack-5.10/249-udp-tunnel-selection.patch
new file mode 100644
index 0000000000..2c74298dfe
--- /dev/null
+++ b/target/linux/generic/hack-5.10/249-udp-tunnel-selection.patch
@@ -0,0 +1,11 @@
+--- a/net/ipv4/Kconfig
++++ b/net/ipv4/Kconfig
+@@ -315,7 +315,7 @@ config NET_IPVTI
+ 	  on top.
+ 
+ config NET_UDP_TUNNEL
+-	tristate
++	tristate "IP: UDP tunneling support"
+ 	select NET_IP_TUNNEL
+ 	default n
+