83. Layer-3 Forwarding with Access Control

83.1. Description

This document contains the test plan and results for testing l3fwd-acl using the ACL library for access control and L3 forwarding.

The l3fwd-acl application uses an IPv4 5-tuple syntax for packet matching. The 5-tuple consist of source IP address, destination IP address, source port, destination port and a protocol identifier.

The l3fwd-acl application supports two types of rules:

  1. Route information which is used for L3 forwarding.
  2. An access control list which defines the black list to block.

The l3fwd-acl application needs to load ACL and route rules before running. Route rules are mandatory while ACL rules are optional. After receiving packets from ports, l3fwd-acl will extract the necessary info from the TCP/IP header of received packets and perform a lookup in a rule database to figure out whether the packets should be dropped (in the ACL range) or forwarded to desired ports.

83.2. Prerequisites

  1. The DUT has at least 2 DPDK supported IXGBE/I40E NIC ports:

    Tester      DUT
    eth1  <---> PORT 0
    eth2  <---> PORT 1
    
  2. Support igb_uio driver:

    modprobe uio
    insmod  ./x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
    ./usertools/dpdk-devbind.py --bind=igb_uio 04:00.0 04:00.1
    

83.3. Test Case: packet match ACL rule

Ipv4 packet match source ip address 200.10.0.1 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv4.db
@200.10.0.1/32 0.0.0.0/0 0 : 65535 0 : 65535 0/0
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv6.db
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv4 packet with source ip address 200.10.0.1 will be dropped.
Send one ipv4 packet with source ip address 200.10.0.2 will be forwarded to PORT0

Ipv4 packet match destination ip address 100.10.0.1 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv4.db
@0.0.0.0/0 100.10.0.1/32 0 : 65535 0 : 65535 0/0
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv6.db
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv4 packet with destination ip address 100.10.0.1 will be dropped.
Send one ipv4 packet with destination ip address 100.10.0.2 will be forwarded to PORT0

Ipv4 packet match source port 11 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv4.db
@0.0.0.0/0 0.0.0.0/0 11 : 11 0 : 65535 0/0
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv6.db
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv4 packet with source port 11 will be dropped.
Send one ipv4 packet with source port 1 will be forwarded to PORT0

Ipv4 packet match destination port 101 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv4.db
@0.0.0.0/0 0.0.0.0/0 0 : 65535 101 : 101 0/0
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv6.db
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv4 packet with destination port 101 will be dropped.
Send one ipv4 packet with destination port 1 will be forwarded to PORT0

Ipv4 packet match protocol TCP will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv4.db
@0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 6/0xff
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv6.db
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one TCP ipv4 packet will be dropped.
Send one UDP ipv4 packet will be forwarded to PORT0

Ipv4 packet match 5-tuple will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv4.db
@200.10.0.1/32 100.10.0.1/32 11 : 11 101 : 101 0x06/0xff
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv6.db
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one TCP ipv4 packet with source ip address 200.10.0.1,
destination ip address 100.10.0.1, source port 11, destination
port 101 will be dropped.

Send one TCP ipv4 packet with source ip address 200.10.0.2,
destination ip address 100.10.0.1, source port 11, destination
port 101 will be forwarded to PORT0.

Ipv6 packet match source ipv6 address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv6.db
@2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0/0
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv4.db
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 will be dropped.
Send one ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7342/128 will be forwarded to PORT0

Ipv6 packet match destination ipv6 address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv6.db
@0:0:0:0:0:0:0:0/0 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128 0 : 65535 0 : 65535 0/0
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv4.db
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv6 packet with destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128 will be dropped.
Send one ipv6 packet with destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7343/128 will be forwarded to PORT0

Ipv6 packet match source port 11 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv6.db
@0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 11 : 11 0 : 65535 0/0
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv4.db
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv6 packet with source port 11 will be dropped.
Send one ipv6 packet with source port 1 will be forwarded to PORT0

Ipv6 packet match destination port 101 will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv6.db
@0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 101 : 101 0/0
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv4.db
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one ipv6 packet with destination port 101 will be dropped.
Send one ipv6 packet with destination port 1 will be forwarded to PORT0

Ipv6 packet match protocol TCP will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv6.db
@0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 6/0xff
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv4.db
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one TCP ipv6 packet will be dropped.
Send one UDP ipv6 packet will be forwarded to PORT0

Ipv6 packet match 5-tuple will be dropped:

Add one ACL rule and default route rule in /root/rule_ipv6.db
@2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128 11 : 11 101 : 101 0x06/0xff
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one default rule in rule file /root/rule_ipv4.db
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
 --rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one TCP ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128,
destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128,source port 11,
destination port 101 will be dropped.

Send one TCP ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128,
destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7343/128, source port 11,
destination port 101 will be forwarded to PORT0.

83.4. Test Case: packet match Exact route rule

Add two exact rule as below in rule_ipv4.db:

R200.10.0.1/32 100.10.0.1/32 11 : 11 101 : 101 0x06/0xff 0
R200.20.0.1/32 100.20.0.1/32 12 : 12 102 : 102 0x06/0xff 1

Add two exact rule as below in rule_ipv6.db:

R2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128 11 : 11 101 : 101 0x06/0xff 0
R2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/128 12 : 12 102 : 102 0x06/0xff 1

Start l3fwd-acl and send packet:

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one TCP ipv4 packet with source ip address 200.10.0.1, destination
ip address 100.10.0.1,source port 11, destination port 101 will be forward to PORT0.

Send one TCP ipv4 packet with source ip address 200.20.0.1, destination
ip address 100.20.0.1,source port 12, destination port 102 will be forward to PORT1.

Send one TCP ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344,
destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344, source port 11,
destination port 101 will be forward to PORT0.

Send one TCP ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344,
destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344,source port 12,
destination port 102 will be forward to PORT1.

83.5. Test Case: packet match LPM route rule

Add two LPM rule as below in rule_ipv4.db:

R0.0.0.0/0 1.1.1.0/24 0 : 65535 0 : 65535 0x00/0x00 0
R0.0.0.0/0 2.1.1.0/24 0 : 65535 0 : 65535 0x00/0x00 1

Add two LPM rule as below in rule_ipv6.db:

R0:0:0:0:0:0:0:0/0 1:1:1:1:1:1:0:0/96 0 : 65535 0 : 65535 0x00/0x00 0
R0:0:0:0:0:0:0:0/0 2:1:1:1:1:1:0:0/96 0 : 65535 0 : 65535 0x00/0x00 1

Start l3fwd-acl and send packet:

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

Send one TCP ipv4 packet with destination ip address 1.1.1.1 will be forward to PORT0.
Send one TCP ipv4 packet with source ip address 2.1.1.1 will be forward to PORT1.

Send one TCP ipv6 packet with destination ip address 1:1:1:1:1:1:0:0 will be forward to PORT0.
Send one TCP ipv6 packet with source ip address 2:1:1:1:1:1:0:0 will be forward to PORT1.

83.6. Test Case: packet match by scalar function

Packet match 5-tuple will be dropped:

Add one ACL rule and default route rule in rule_ipv4.db
@200.10.0.1/32 100.10.0.1/32 11 : 11 101 : 101 0x06/0xff
R0.0.0.0/0 0.0.0.0/0 0 : 65535 0 : 65535 0x00/0x00 0

Add one ACL rule and default route rule in rule_ipv6.db
@2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/101 11 : 11 101 : 101 0x06/0xff
R0:0:0:0:0:0:0:0/0 0:0:0:0:0:0:0:0/0 0 : 65535 0 : 65535 0x00/0x00 0

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db" --scalar

Send one TCP ipv4 packet with source ip address 200.10.0.1, destination ip address 100.10.0.1,
source port 11, destination port 101 will be dropped.
Send one TCP ipv4 packet with source ip address 200.10.0.2, destination ip address 100.10.0.1,
source port 11, destination port 101 will be forwarded to PORT0.

Send one TCP ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7344/128,
destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344/101, source port 11,
destination port 101 will be dropped.

Send one TCP ipv6 packet with source ip address 2001:0db8:85a3:08d3:1319:8a2e:0370:7343,
destination ip address 2002:0db8:85a3:08d3:1319:8a2e:0370:7344, source port 11,
destination port 101 will be forwarded to PORT0.

83.7. Test Case: Invalid ACL rule

Add two ACL rule as below in rule_ipv4.db:

R0.0.0.0/0 1.1.1.0/24 12 : 11 : 65535 0x00/0x00 0
R0.0.0.0/0 2.1.1.0/24 0 : 65535 0 : 65535 0x00/0x00 1

Add two ACL rule as below in rule_ipv6.db:

R0:0:0:0:0:0:0:0/0 1:1:1:1:1:1:0:0/96 0 : 65535 0 : 65535 0
R0:0:0:0:0:0:0:0/0 2:1:1:1:1:1:0:0/96 0 : 65535 0 : 65535 0x00/0x00 1

Start l3fwd-acl:

./examples/l3fwd-acl/build/l3fwd-acl -c ff -n 3 -- -p 0x3 --config="(0,0,2),(1,0,3)"
--rule_ipv4="/root/rule_ipv4.db" --rule_ipv6="/root/rule_ipv6.db"

The l3fwdacl will not set up because of ivalid ACL rule.