[FS#4239] flow_offloading_hw doesn't work with nftables (mt7621)
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Mon Feb 7 09:56:12 PST 2022
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FS#4239 - flow_offloading_hw doesn't work with nftables (mt7621)
User who did this - tiagogaspar8 (tiagogaspar8)
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Here it is (with hw offloading enabled):
root at router1:~# opkg list-installed firewall4
firewall4 - 2022-02-07-b54f4622-1
root at router1:~# opkg list-installed netifd
netifd - 2022-02-04-fd4c9e17-1
root at router1:~# uci show firewall
firewall. at defaults[0]=defaults
firewall. at defaults[0].input='ACCEPT'
firewall. at defaults[0].output='ACCEPT'
firewall. at defaults[0].forward='REJECT'
firewall. at defaults[0].synflood_protect='1'
firewall. at defaults[0].flow_offloading='1'
firewall. at defaults[0].flow_offloading_hw='1'
firewall. at zone[0]=zone
firewall. at zone[0].name='lan'
firewall. at zone[0].network='lan'
firewall. at zone[0].input='ACCEPT'
firewall. at zone[0].output='ACCEPT'
firewall. at zone[0].forward='ACCEPT'
firewall. at zone[1]=zone
firewall. at zone[1].name='wan'
firewall. at zone[1].network='wan' 'wan6'
firewall. at zone[1].input='REJECT'
firewall. at zone[1].output='ACCEPT'
firewall. at zone[1].forward='REJECT'
firewall. at zone[1].masq='1'
firewall. at zone[1].mtu_fix='1'
firewall. at forwarding[0]=forwarding
firewall. at forwarding[0].src='lan'
firewall. at forwarding[0].dest='wan'
firewall. at rule[0]=rule
firewall. at rule[0].name='Allow-DHCP-Renew'
firewall. at rule[0].src='wan'
firewall. at rule[0].proto='udp'
firewall. at rule[0].dest_port='68'
firewall. at rule[0].target='ACCEPT'
firewall. at rule[0].family='ipv4'
firewall. at rule[1]=rule
firewall. at rule[1].name='Allow-Ping'
firewall. at rule[1].src='wan'
firewall. at rule[1].proto='icmp'
firewall. at rule[1].icmp_type='echo-request'
firewall. at rule[1].family='ipv4'
firewall. at rule[1].target='ACCEPT'
firewall. at rule[2]=rule
firewall. at rule[2].name='Allow-IGMP'
firewall. at rule[2].src='wan'
firewall. at rule[2].proto='igmp'
firewall. at rule[2].family='ipv4'
firewall. at rule[2].target='ACCEPT'
firewall. at rule[3]=rule
firewall. at rule[3].name='Allow-DHCPv6'
firewall. at rule[3].src='wan'
firewall. at rule[3].proto='udp'
firewall. at rule[3].src_ip='fc00::/6'
firewall. at rule[3].dest_ip='fc00::/6'
firewall. at rule[3].dest_port='546'
firewall. at rule[3].family='ipv6'
firewall. at rule[3].target='ACCEPT'
firewall. at rule[4]=rule
firewall. at rule[4].name='Allow-MLD'
firewall. at rule[4].src='wan'
firewall. at rule[4].proto='icmp'
firewall. at rule[4].src_ip='fe80::/10'
firewall. at rule[4].icmp_type='130/0' '131/0' '132/0' '143/0'
firewall. at rule[4].family='ipv6'
firewall. at rule[4].target='ACCEPT'
firewall. at rule[5]=rule
firewall. at rule[5].name='Allow-ICMPv6-Input'
firewall. at rule[5].src='wan'
firewall. at rule[5].proto='icmp'
firewall. at rule[5].icmp_type='echo-request' 'echo-reply' 'destination-unreachable' 'packet-too-big' 'time-exceeded' 'bad-header' 'unknown-header-type' 'router-solicitation' 'neighbour-solicitation' 'router-advertisement' 'neighbour-advertisement'
firewall. at rule[5].limit='1000/sec'
firewall. at rule[5].family='ipv6'
firewall. at rule[5].target='ACCEPT'
firewall. at rule[6]=rule
firewall. at rule[6].name='Allow-ICMPv6-Forward'
firewall. at rule[6].src='wan'
firewall. at rule[6].dest='*'
firewall. at rule[6].proto='icmp'
firewall. at rule[6].icmp_type='echo-request' 'echo-reply' 'destination-unreachable' 'packet-too-big' 'time-exceeded' 'bad-header' 'unknown-header-type'
firewall. at rule[6].limit='1000/sec'
firewall. at rule[6].family='ipv6'
firewall. at rule[6].target='ACCEPT'
firewall. at rule[7]=rule
firewall. at rule[7].name='Allow-IPSec-ESP'
firewall. at rule[7].src='wan'
firewall. at rule[7].dest='lan'
firewall. at rule[7].proto='esp'
firewall. at rule[7].target='ACCEPT'
firewall. at rule[8]=rule
firewall. at rule[8].name='Allow-ISAKMP'
firewall. at rule[8].src='wan'
firewall. at rule[8].dest='lan'
firewall. at rule[8].dest_port='500'
firewall. at rule[8].proto='udp'
firewall. at rule[8].target='ACCEPT'
firewall. at rule[9]=rule
firewall. at rule[9].name='Support-UDP-Traceroute'
firewall. at rule[9].src='wan'
firewall. at rule[9].dest_port='33434:33689'
firewall. at rule[9].proto='udp'
firewall. at rule[9].family='ipv4'
firewall. at rule[9].target='REJECT'
firewall. at rule[9].enabled='false'
firewall. at include[0]=include
firewall. at include[0].path='/etc/firewall.user'
firewall.miniupnpd=include
firewall.miniupnpd.type='script'
firewall.miniupnpd.path='/usr/share/miniupnpd/firewall.include'
firewall.miniupnpd.family='any'
firewall.miniupnpd.reload='1'
root at router1:~# fw4 flush
root at router1:~# fw4 start
Section @rule[9] (Support-UDP-Traceroute) is disabled, ignoring section
/proc/self/fd/0:9:12-13: Error: Could not process rule: Not supported
/proc/self/fd/0:54:29-44: Error: Could not process rule: No such file or directory
root at router1:~# fw4 print
Section @rule[9] (Support-UDP-Traceroute) is disabled, ignoring section
table inet fw4
flush table inet fw4
table inet fw4 {
#
# Flowtable
#
flowtable ft {
hook ingress priority 0;
devices = { "lan4", "lan2", "lan3", "lan1", "wan" };
flags offload;
}
#
# Set definitions
#
#
# Defines
#
define lan_devices = { "br-lan" }
define lan_subnets = { 192.168.1.0/24, 2001:8a0:6ecf:f700::/60, fd16:bed2:31b3::/60 }
define wan_devices = { "wan" }
define wan_subnets = { 176.78.6.0/24 }
#
# User includes
#
include "/etc/nftables.d/*.nft"
#
# Filter rules
#
chain input {
type filter hook input priority filter; policy accept;
iifname "lo" accept comment "!fw4: Accept traffic from loopback"
ct state established,related accept comment "!fw4: Allow inbound established and related flows"
tcp flags & (fin | syn | rst | ack) == syn jump syn_flood comment "!fw4: Rate limit TCP syn packets"
iifname "br-lan" jump input_lan comment "!fw4: Handle lan IPv4/IPv6 input traffic"
iifname "wan" jump input_wan comment "!fw4: Handle wan IPv4/IPv6 input traffic"
}
chain forward {
type filter hook forward priority filter; policy drop;
meta l4proto { tcp, udp } flow offload @ft;
ct state established,related accept comment "!fw4: Allow forwarded established and related flows"
iifname "br-lan" jump forward_lan comment "!fw4: Handle lan IPv4/IPv6 forward traffic"
iifname "wan" jump forward_wan comment "!fw4: Handle wan IPv4/IPv6 forward traffic"
jump handle_reject
}
chain output {
type filter hook output priority filter; policy accept;
oifname "lo" accept comment "!fw4: Accept traffic towards loopback"
ct state established,related accept comment "!fw4: Allow outbound established and related flows"
oifname "br-lan" jump output_lan comment "!fw4: Handle lan IPv4/IPv6 output traffic"
oifname "wan" jump output_wan comment "!fw4: Handle wan IPv4/IPv6 output traffic"
}
chain handle_reject {
meta l4proto tcp reject with tcp reset comment "!fw4: Reject TCP traffic"
reject with icmpx type port-unreachable comment "!fw4: Reject any other traffic"
}
chain syn_flood {
limit rate 25/second burst 50 packets return comment "!fw4: Accept SYN packets below rate-limit"
drop comment "!fw4: Drop excess packets"
}
chain input_lan {
jump accept_from_lan
}
chain output_lan {
jump accept_to_lan
}
chain forward_lan {
jump accept_to_wan comment "!fw4: Accept lan to wan forwarding"
jump accept_to_lan
}
chain accept_from_lan {
iifname "br-lan" counter accept comment "!fw4: accept lan IPv4/IPv6 traffic"
}
chain accept_to_lan {
oifname "br-lan" counter accept comment "!fw4: accept lan IPv4/IPv6 traffic"
}
chain input_wan {
meta nfproto ipv4 meta l4proto igmp counter accept comment "!fw4: ubus:omcproxy[instance1] rule 0"
ip6 saddr fe80::/10 icmpv6 type . icmpv6 code { 130 . 0, 131 . 0, 132 . 0, 143 . 0 } counter accept comment "!fw4: ubus:omcproxy[instance1] rule 1"
meta nfproto ipv4 udp dport 68 counter accept comment "!fw4: Allow-DHCP-Renew"
meta nfproto ipv4 icmp type 8 counter accept comment "!fw4: Allow-Ping"
meta nfproto ipv4 meta l4proto igmp counter accept comment "!fw4: Allow-IGMP"
ip6 saddr fc00::/6 ip6 daddr fc00::/6 udp dport 546 counter accept comment "!fw4: Allow-DHCPv6"
ip6 saddr fe80::/10 icmpv6 type . icmpv6 code { 130 . 0, 131 . 0, 132 . 0, 143 . 0 } counter accept comment "!fw4: Allow-MLD"
meta nfproto ipv6 icmpv6 type { 128, 129, 1, 3, 133, 134 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Input"
meta nfproto ipv6 icmpv6 type . icmpv6 code { 2 . 0, 4 . 0, 4 . 1, 135 . 0, 136 . 0 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Input"
jump reject_from_wan
}
chain output_wan {
jump accept_to_wan
}
chain forward_wan {
meta l4proto udp ip daddr 224.0.0.0/4 counter jump accept_to_lan comment "!fw4: ubus:omcproxy[instance1] rule 2"
meta l4proto udp ip6 daddr ff00::/8 counter jump accept_to_lan comment "!fw4: ubus:omcproxy[instance1] rule 3"
meta nfproto ipv6 icmpv6 type { 128, 129, 1, 3 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Forward"
meta nfproto ipv6 icmpv6 type . icmpv6 code { 2 . 0, 4 . 0, 4 . 1 } limit rate 1000/second counter accept comment "!fw4: Allow-ICMPv6-Forward"
meta l4proto esp counter jump accept_to_lan comment "!fw4: Allow-IPSec-ESP"
udp dport 500 counter jump accept_to_lan comment "!fw4: Allow-ISAKMP"
jump reject_to_wan
}
chain accept_to_wan {
oifname "wan" counter accept comment "!fw4: accept wan IPv4/IPv6 traffic"
}
chain reject_from_wan {
iifname "wan" counter jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
}
chain reject_to_wan {
oifname "wan" counter jump handle_reject comment "!fw4: reject wan IPv4/IPv6 traffic"
}
#
# NAT rules
#
chain dstnat {
type nat hook prerouting priority dstnat; policy accept;
}
chain srcnat {
type nat hook postrouting priority srcnat; policy accept;
oifname "wan" jump srcnat_wan comment "!fw4: Handle wan IPv4/IPv6 srcnat traffic"
}
chain srcnat_wan {
meta nfproto ipv4 masquerade comment "!fw4: Masquerade IPv4 wan traffic"
}
#
# Raw rules (notrack & helper)
#
chain raw_prerouting {
type filter hook prerouting priority raw; policy accept;
iifname "br-lan" jump helper_lan comment "!fw4: lan IPv4/IPv6 CT helper assignment"
}
chain raw_output {
type filter hook output priority raw; policy accept;
}
chain helper_lan {
}
#
# Mangle rules
#
chain mangle_prerouting {
type filter hook prerouting priority mangle; policy accept;
}
chain mangle_postrouting {
type filter hook postrouting priority mangle; policy accept;
}
chain mangle_input {
type filter hook input priority mangle; policy accept;
}
chain mangle_output {
type filter hook output priority mangle; policy accept;
}
chain mangle_forward {
type filter hook forward priority mangle; policy accept;
iifname "wan" tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 ingress MTU fixing"
oifname "wan" tcp flags syn tcp option maxseg size set rt mtu comment "!fw4: Zone wan IPv4/IPv6 egress MTU fixing"
}
}
root at router1:~#
----------
More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4239#comment10525
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