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authorFlorian Westphal <fw@strlen.de>2024-01-23 16:42:48 +0100
committerFlorian Westphal <fw@strlen.de>2024-01-29 15:43:20 +0100
commit4654467dc7e111e84f43ed1b70322873ae77e7be (patch)
tree641d92fbb4c2e527c69a594c57a59aa4faa12819 /net/ipv4/netfilter/Kconfig
parentd5f9142fb96d4386ff4d06745bbd8f8c73b3791b (diff)
downloadlinux-4654467dc7e111e84f43ed1b70322873ae77e7be.tar.gz
netfilter: arptables: allow xtables-nft only builds
Allows to build kernel that supports the arptables mangle target via nftables' compat infra but without the arptables get/setsockopt interface or the old arptables filter interpreter. IOW, setting IP_NF_ARPFILTER=n will break arptables-legacy, but arptables-nft will continue to work as long as nftables compat support is enabled. Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Phil Sutter <phil@nwl.cc>
Diffstat (limited to 'net/ipv4/netfilter/Kconfig')
-rw-r--r--net/ipv4/netfilter/Kconfig28
1 files changed, 13 insertions, 15 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index f71a7e9a7de6d8..070475392236f1 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -309,36 +309,34 @@ endif # IP_NF_IPTABLES
# ARP tables
config IP_NF_ARPTABLES
- tristate "ARP tables support"
- select NETFILTER_XTABLES
- select NETFILTER_FAMILY_ARP
- depends on NETFILTER_ADVANCED
- help
- arptables is a general, extensible packet identification framework.
- The ARP packet filtering and mangling (manipulation)subsystems
- use this: say Y or M here if you want to use either of those.
-
- To compile it as a module, choose M here. If unsure, say N.
+ tristate
-if IP_NF_ARPTABLES
+config NFT_COMPAT_ARP
+ tristate
+ depends on NF_TABLES_ARP && NFT_COMPAT
+ default m if NFT_COMPAT=m
+ default y if NFT_COMPAT=y
config IP_NF_ARPFILTER
- tristate "ARP packet filtering"
+ tristate "arptables-legacy packet filtering support"
+ select IP_NF_ARPTABLES
help
ARP packet filtering defines a table `filter', which has a series of
rules for simple ARP packet filtering at local input and
- local output. On a bridge, you can also specify filtering rules
- for forwarded ARP packets. See the man page for arptables(8).
+ local output. This is only needed for arptables-legacy(8).
+ Neither arptables-nft nor nftables need this to work.
To compile it as a module, choose M here. If unsure, say N.
config IP_NF_ARP_MANGLE
tristate "ARP payload mangling"
+ depends on IP_NF_ARPTABLES || NFT_COMPAT_ARP
help
Allows altering the ARP packet payload: source and destination
hardware and network addresses.
-endif # IP_NF_ARPTABLES
+ This option is needed by both arptables-legacy and arptables-nft.
+ It is not used by nftables.
endmenu