lklWithFirewall: init

There is a pull request in the LKL repo adding firewall support:
https://github.com/lkl/linux/pull/431
It simply enables the appropriate options in the kernel config, since
the framework is already there.
It has not been merged yet, because enabling these options by default
would lead to bigger lkl binaries and an overall slowdown for all users.
However, since we can provide an opt-in variant with Firewall support,
there is no reason not to do it.

This is very useful for nftables rule checking without having access to
the kernel interface.

2 files changed, 161 insertions, 1 deletions

diff --git a/pkgs/applications/virtualization/lkl/default.nix b/pkgs/applications/virtualization/lkl/default.nix
index 1a6d80220e211..4a1514cd97a1b 100644
--- a/pkgs/applications/virtualization/lkl/default.nix
+++ b/pkgs/applications/virtualization/lkl/default.nix
@@ -1,5 +1,8 @@
 { lib, stdenv, fetchFromGitHub, bc, python3, bison, flex, fuse, libarchive
-, buildPackages }:
+, buildPackages
+
+, firewallSupport ? false
+}:
 
 stdenv.mkDerivation rec {
   pname = "lkl";
@@ -26,6 +29,8 @@ stdenv.mkDerivation rec {
 
     # Fixup build with newer Linux headers: https://github.com/lkl/linux/pull/484
     sed '1i#include <linux/sockios.h>' -i tools/lkl/lib/hijack/xlate.c
+  '' + lib.optionalString firewallSupport ''
+    cat ${./lkl-defconfig-enable-nftables} >> arch/lkl/configs/defconfig
   '';
 
   installPhase = ''
diff --git a/pkgs/applications/virtualization/lkl/lkl-defconfig-enable-nftables b/pkgs/applications/virtualization/lkl/lkl-defconfig-enable-nftables
new file mode 100644
index 0000000000000..8f133938587f7
--- /dev/null
+++ b/pkgs/applications/virtualization/lkl/lkl-defconfig-enable-nftables
@@ -0,0 +1,155 @@
+CONFIG_NETFILTER=y
+CONFIG_NF_CONNTRACK=y
+CONFIG_NF_LOG_NETDEV=y
+CONFIG_NF_CONNTRACK_ZONES=y
+CONFIG_NF_CONNTRACK_EVENTS=y
+CONFIG_NF_CONNTRACK_TIMEOUT=y
+CONFIG_NF_CONNTRACK_TIMESTAMP=y
+CONFIG_NF_CONNTRACK_AMANDA=y
+CONFIG_NF_CONNTRACK_FTP=y
+CONFIG_NF_CONNTRACK_H323=y
+CONFIG_NF_CONNTRACK_IRC=y
+CONFIG_NF_CONNTRACK_NETBIOS_NS=y
+CONFIG_NF_CONNTRACK_SNMP=y
+CONFIG_NF_CONNTRACK_PPTP=y
+CONFIG_NF_CONNTRACK_SANE=y
+CONFIG_NF_CONNTRACK_SIP=y
+CONFIG_NF_CONNTRACK_TFTP=y
+CONFIG_NF_CT_NETLINK=y
+CONFIG_NF_CT_NETLINK_TIMEOUT=y
+CONFIG_NF_CT_NETLINK_HELPER=y
+CONFIG_NETFILTER_NETLINK_GLUE_CT=y
+CONFIG_NF_TABLES=y
+CONFIG_NF_TABLES_INET=y
+CONFIG_NF_TABLES_NETDEV=y
+CONFIG_NFT_NUMGEN=y
+CONFIG_NFT_CT=y
+CONFIG_NFT_COUNTER=y
+CONFIG_NFT_CONNLIMIT=y
+CONFIG_NFT_LOG=y
+CONFIG_NFT_LIMIT=y
+CONFIG_NFT_MASQ=y
+CONFIG_NFT_REDIR=y
+CONFIG_NFT_NAT=y
+CONFIG_NFT_TUNNEL=y
+CONFIG_NFT_OBJREF=y
+CONFIG_NFT_QUEUE=y
+CONFIG_NFT_QUOTA=y
+CONFIG_NFT_REJECT=y
+CONFIG_NFT_COMPAT=y
+CONFIG_NFT_HASH=y
+CONFIG_NFT_FIB_INET=y
+CONFIG_NFT_SOCKET=y
+CONFIG_NFT_OSF=y
+CONFIG_NFT_TPROXY=y
+CONFIG_NFT_SYNPROXY=y
+CONFIG_NFT_DUP_NETDEV=y
+CONFIG_NFT_FWD_NETDEV=y
+CONFIG_NFT_FIB_NETDEV=y
+CONFIG_NF_FLOW_TABLE_INET=y
+CONFIG_NF_FLOW_TABLE=y
+CONFIG_NETFILTER_XT_TARGET_CHECKSUM=y
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=y
+CONFIG_NETFILTER_XT_TARGET_DSCP=y
+CONFIG_NETFILTER_XT_TARGET_HMARK=y
+CONFIG_NETFILTER_XT_TARGET_IDLETIMER=y
+CONFIG_NETFILTER_XT_TARGET_LOG=y
+CONFIG_NETFILTER_XT_TARGET_MARK=y
+CONFIG_NETFILTER_XT_TARGET_NFLOG=y
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y
+CONFIG_NETFILTER_XT_TARGET_NOTRACK=y
+CONFIG_NETFILTER_XT_TARGET_TEE=y
+CONFIG_NETFILTER_XT_TARGET_TPROXY=y
+CONFIG_NETFILTER_XT_TARGET_TRACE=y
+CONFIG_NETFILTER_XT_TARGET_TCPMSS=y
+CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=y
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
+CONFIG_NETFILTER_XT_MATCH_BPF=y
+CONFIG_NETFILTER_XT_MATCH_CLUSTER=y
+CONFIG_NETFILTER_XT_MATCH_COMMENT=y
+CONFIG_NETFILTER_XT_MATCH_CONNBYTES=y
+CONFIG_NETFILTER_XT_MATCH_CONNLABEL=y
+CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=y
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
+CONFIG_NETFILTER_XT_MATCH_CPU=y
+CONFIG_NETFILTER_XT_MATCH_DCCP=y
+CONFIG_NETFILTER_XT_MATCH_DEVGROUP=y
+CONFIG_NETFILTER_XT_MATCH_DSCP=y
+CONFIG_NETFILTER_XT_MATCH_ESP=y
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y
+CONFIG_NETFILTER_XT_MATCH_HELPER=y
+CONFIG_NETFILTER_XT_MATCH_IPCOMP=y
+CONFIG_NETFILTER_XT_MATCH_IPRANGE=y
+CONFIG_NETFILTER_XT_MATCH_L2TP=y
+CONFIG_NETFILTER_XT_MATCH_LENGTH=y
+CONFIG_NETFILTER_XT_MATCH_LIMIT=y
+CONFIG_NETFILTER_XT_MATCH_MAC=y
+CONFIG_NETFILTER_XT_MATCH_MARK=y
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
+CONFIG_NETFILTER_XT_MATCH_NFACCT=y
+CONFIG_NETFILTER_XT_MATCH_OSF=y
+CONFIG_NETFILTER_XT_MATCH_OWNER=y
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y
+CONFIG_NETFILTER_XT_MATCH_QUOTA=y
+CONFIG_NETFILTER_XT_MATCH_RATEEST=y
+CONFIG_NETFILTER_XT_MATCH_REALM=y
+CONFIG_NETFILTER_XT_MATCH_RECENT=y
+CONFIG_NETFILTER_XT_MATCH_SCTP=y
+CONFIG_NETFILTER_XT_MATCH_SOCKET=y
+CONFIG_NETFILTER_XT_MATCH_STATE=y
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=y
+CONFIG_NETFILTER_XT_MATCH_STRING=y
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=y
+CONFIG_NETFILTER_XT_MATCH_TIME=y
+CONFIG_NETFILTER_XT_MATCH_U32=y
+CONFIG_NFT_DUP_IPV4=y
+CONFIG_NFT_FIB_IPV4=y
+CONFIG_NF_TABLES_ARP=y
+CONFIG_NF_FLOW_TABLE_IPV4=y
+CONFIG_NF_LOG_ARP=y
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IP_NF_MATCH_AH=y
+CONFIG_IP_NF_MATCH_ECN=y
+CONFIG_IP_NF_MATCH_RPFILTER=y
+CONFIG_IP_NF_MATCH_TTL=y
+CONFIG_IP_NF_FILTER=y
+CONFIG_IP_NF_TARGET_REJECT=y
+CONFIG_IP_NF_TARGET_SYNPROXY=y
+CONFIG_IP_NF_NAT=y
+CONFIG_IP_NF_TARGET_MASQUERADE=y
+CONFIG_IP_NF_TARGET_NETMAP=y
+CONFIG_IP_NF_TARGET_REDIRECT=y
+CONFIG_IP_NF_MANGLE=y
+CONFIG_IP_NF_TARGET_CLUSTERIP=y
+CONFIG_IP_NF_TARGET_ECN=y
+CONFIG_IP_NF_TARGET_TTL=y
+CONFIG_IP_NF_RAW=y
+CONFIG_IP_NF_ARPTABLES=y
+CONFIG_IP_NF_ARPFILTER=y
+CONFIG_IP_NF_ARP_MANGLE=y
+CONFIG_NFT_DUP_IPV6=y
+CONFIG_NFT_FIB_IPV6=y
+CONFIG_NF_FLOW_TABLE_IPV6=y
+CONFIG_IP6_NF_IPTABLES=y
+CONFIG_IP6_NF_MATCH_AH=y
+CONFIG_IP6_NF_MATCH_EUI64=y
+CONFIG_IP6_NF_MATCH_FRAG=y
+CONFIG_IP6_NF_MATCH_OPTS=y
+CONFIG_IP6_NF_MATCH_HL=y
+CONFIG_IP6_NF_MATCH_IPV6HEADER=y
+CONFIG_IP6_NF_MATCH_MH=y
+CONFIG_IP6_NF_MATCH_RPFILTER=y
+CONFIG_IP6_NF_MATCH_RT=y
+CONFIG_IP6_NF_MATCH_SRH=y
+CONFIG_IP6_NF_TARGET_HL=y
+CONFIG_IP6_NF_FILTER=y
+CONFIG_IP6_NF_TARGET_REJECT=y
+CONFIG_IP6_NF_TARGET_SYNPROXY=y
+CONFIG_IP6_NF_MANGLE=y
+CONFIG_IP6_NF_RAW=y
+CONFIG_IP6_NF_NAT=y
+CONFIG_IP6_NF_TARGET_MASQUERADE=y
+CONFIG_IP6_NF_TARGET_NPT=y
+CONFIG_NF_CONNTRACK_BRIDGE=y