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kernel: enhance multicast routing support 

Certain utilities, such as smcroute [1], require additional multicast
routing options to be enabled, otherwise they will not function
correctly. Enable these relevant dependancies when IPv4 and/or IPv6
multicast routing are enabled.

[1] https://github.com/troglobit/smcroute/blob/master/README.md#linux-requirements

This increases the uncompressed kernel size on MIPS 24kc by 8KBytes
and the compressed kernel size by 1.8KBytes.

Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
This commit is contained in:
Matthew Hagan 2022-01-03 23:00:18 +00:00 committed by Hauke Mehrtens
parent 536f051b97
commit 033b6cef94
1 changed files with 22 additions and 2 deletions
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24
config/Config-kernel.in
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@ -986,6 +986,19 @@ config KERNEL_IP_MROUTE
Multicast routing requires a multicast routing daemon in
addition to kernel support.
if KERNEL_IP_MROUTE
config KERNEL_IP_MROUTE_MULTIPLE_TABLES
def_bool y
config KERNEL_IP_PIMSM_V1
def_bool y
config KERNEL_IP_PIMSM_V2
def_bool y
endif
#
# IPv6 configuration
#
@ -1008,8 +1021,15 @@ if KERNEL_IPV6
Multicast routing requires a multicast routing daemon in
addition to kernel support.
config KERNEL_IPV6_PIMSM_V2
def_bool n
if KERNEL_IPV6_MROUTE
config KERNEL_IPV6_MROUTE_MULTIPLE_TABLES
def_bool y
config KERNEL_IPV6_PIMSM_V2
def_bool y
endif
config KERNEL_IPV6_SEG6_LWTUNNEL
bool "Enable support for lightweight tunnels"