Hi,
I'm working with combination ABF+ACL plugins, but I have a problem with ACL
permit rule. ACL action "permit" is ignored and ABF drops packets. Please,
can someone confirm this is the correct behavior? Thanks
Regards
Petr B.
vpp# show version
vpp v22.06-rc0~378-g6120441f9
### note:
vlan 2501@enp3s0(pop1) + loop0(bvi) = bridge domain 192.168.95.100/24
ping from 192.168.95.17 => 10.0.0.100
1. add rules:
set acl-plugin acl permit dst 10.0.0.100/32
abf policy add id 0 acl 0 via 192.168.95.100 loop0
abf attach ip4 policy 0 loop0
2. show
vpp# show acl-plugin acl
acl-index 0 count 1 tag {cli}
0: ipv4 permit src 0.0.0.0/0 dst 10.0.0.100/32 proto 0 sport
0-65535 dport 0-65535
used in lookup context index: 0
vpp# show abf policy
abf:[0]: policy:0 acl:0
path-list:[64] locks:1 flags:shared,no-uRPF, uRPF-list: None
path:[88] pl-index:64 ip4 weight=1 pref=0 attached-nexthop:
oper-flags:resolved,
192.168.95.100 loop0
[@0]: arp-ipv4: via 192.168.95.100 loop0
vpp# show abf attach loop0
ipv4:
abf-interface-attach: policy:0 priority:0
[@1]: arp-ipv4: via 192.168.95.100 loop0
3. show trace
Packet 4
00:06:31:315032: dpdk-input
enp3s0 rx queue 0
buffer 0x91ad3: current data 0, length 68, buffer-pool 0, ref-count 1,
trace handle 0x3000003
ext-hdr-valid
PKT MBUF: port 1, nb_segs 1, pkt_len 68
buf_len 2176, data_len 68, ol_flags 0x182, data_off 128, phys_addr
0x5dc6b540
packet_type 0x11 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x52c93baa fdir.hi 0x0 fdir.lo 0x52c93baa
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
PKT_RX_RSS_HASH (0x0002) RX packet with RSS hash result
Packet Types
RTE_PTYPE_L2_ETHER (0x0001) Ethernet packet
RTE_PTYPE_L3_IPV4 (0x0010) IPv4 packet without extension headers
IP4: 74:4d:28:8d:0d:22 -> 1a:24:b6:07:ca:16 802.1q vlan 2501
ICMP: 192.168.95.17 -> 10.0.0.100
tos 0x00, ttl 255, length 50, checksum 0xa899 dscp CS0 ecn NON_ECN
fragment id 0xe913
ICMP echo_request checksum 0x4637 id 39169
00:06:31:315041: ethernet-input
frame: flags 0x3, hw-if-index 2, sw-if-index 2
IP4: 74:4d:28:8d:0d:22 -> 1a:24:b6:07:ca:16 802.1q vlan 2501
00:06:31:315047: l2-input
l2-input: sw_if_index 4 dst 1a:24:b6:07:ca:16 src 74:4d:28:8d:0d:22
[l2-input-vtr l2-learn l2-fwd l2-flood l2-flood ]
00:06:31:315049: l2-input-vtr
l2-input-vtr: sw_if_index 4 dst 1a:24:b6:07:ca:16 src 74:4d:28:8d:0d:22
data 08 00 45 00 00 32 e9 13 00 00 ff 01
00:06:31:315049: l2-learn
l2-learn: sw_if_index 4 dst 1a:24:b6:07:ca:16 src 74:4d:28:8d:0d:22
bd_index 1
00:06:31:315051: l2-fwd
l2-fwd: sw_if_index 4 dst 1a:24:b6:07:ca:16 src 74:4d:28:8d:0d:22
bd_index 1 result [0x70000000b, 11] static age-not bvi
00:06:31:315052: ip4-input
ICMP: 192.168.95.17 -> 10.0.0.100
tos 0x00, ttl 255, length 50, checksum 0xa899 dscp CS0 ecn NON_ECN
fragment id 0xe913
ICMP echo_request checksum 0x4637 id 39169
00:06:31:315054: abf-input-ip4
next 1 index 28
00:06:31:315056: ip4-arp
ICMP: 192.168.95.17 -> 10.0.0.100
tos 0x00, ttl 255, length 50, checksum 0xa899 dscp CS0 ecn NON_ECN
fragment id 0xe913
ICMP echo_request checksum 0x4637 id 39169
00:06:31:315064: ip4-drop
ICMP: 192.168.95.17 -> 10.0.0.100
tos 0x00, ttl 255, length 50, checksum 0xa899 dscp CS0 ecn NON_ECN
fragment id 0xe913
ICMP echo_request checksum 0x4637 id 39169
00:06:31:315066: error-drop
rx:loop0
00:06:31:315068: drop
ip4-arp: ARP requests sent
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