353 lines
10 KiB
Bash
353 lines
10 KiB
Bash
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright 2020 NXP
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WAIT_TIME=1
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NUM_NETIFS=4
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STABLE_MAC_ADDRS=yes
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lib_dir=$(dirname $0)/../../../net/forwarding
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source $lib_dir/tc_common.sh
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source $lib_dir/lib.sh
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require_command tcpdump
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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swp2=${NETIFS[p3]}
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h2=${NETIFS[p4]}
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# Helpers to map a VCAP IS1 and VCAP IS2 lookup and policy to a chain number
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# used by the kernel driver. The numbers are:
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# VCAP IS1 lookup 0: 10000
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# VCAP IS1 lookup 1: 11000
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# VCAP IS1 lookup 2: 12000
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# VCAP IS2 lookup 0 policy 0: 20000
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# VCAP IS2 lookup 0 policy 1: 20001
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# VCAP IS2 lookup 0 policy 255: 20255
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# VCAP IS2 lookup 1 policy 0: 21000
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# VCAP IS2 lookup 1 policy 1: 21001
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# VCAP IS2 lookup 1 policy 255: 21255
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IS1()
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{
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local lookup=$1
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echo $((10000 + 1000 * lookup))
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}
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IS2()
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{
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local lookup=$1
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local pag=$2
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echo $((20000 + 1000 * lookup + pag))
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}
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ES0()
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{
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echo 0
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}
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# The Ocelot switches have a fixed ingress pipeline composed of:
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#
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# +----------------------------------------------+ +-----------------------------------------+
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# | VCAP IS1 | | VCAP IS2 |
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# | | | |
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# | +----------+ +----------+ +----------+ | | +----------+ +----------+ |
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# | | Lookup 0 | | Lookup 1 | | Lookup 2 | | --+------> PAG 0: | Lookup 0 | -> | Lookup 1 | |
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# | +----------+ -> +----------+ -> +----------+ | | | +----------+ +----------+ |
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# | |key&action| |key&action| |key&action| | | | |key&action| |key&action| |
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# | |key&action| |key&action| |key&action| | | | | .. | | .. | |
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# | | .. | | .. | | .. | | | | +----------+ +----------+ |
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# | +----------+ +----------+ +----------+ | | | |
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# | selects PAG | | | +----------+ +----------+ |
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# +----------------------------------------------+ +------> PAG 1: | Lookup 0 | -> | Lookup 1 | |
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# | | +----------+ +----------+ |
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# | | |key&action| |key&action| |
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# | | | .. | | .. | |
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# | | +----------+ +----------+ |
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# | | ... |
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# | | |
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# | | +----------+ +----------+ |
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# +----> PAG 254: | Lookup 0 | -> | Lookup 1 | |
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# | | +----------+ +----------+ |
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# | | |key&action| |key&action| |
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# | | | .. | | .. | |
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# | | +----------+ +----------+ |
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# | | |
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# | | +----------+ +----------+ |
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# +----> PAG 255: | Lookup 0 | -> | Lookup 1 | |
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# | +----------+ +----------+ |
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# | |key&action| |key&action| |
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# | | .. | | .. | |
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# | +----------+ +----------+ |
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# +-----------------------------------------+
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#
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# Both the VCAP IS1 (Ingress Stage 1) and IS2 (Ingress Stage 2) are indexed
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# (looked up) multiple times: IS1 3 times, and IS2 2 times. Each filter
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# (key and action pair) can be configured to only match during the first, or
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# second, etc, lookup.
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#
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# During one TCAM lookup, the filter processing stops at the first entry that
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# matches, then the pipeline jumps to the next lookup.
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# The driver maps each individual lookup of each individual ingress TCAM to a
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# separate chain number. For correct rule offloading, it is mandatory that each
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# filter installed in one TCAM is terminated by a non-optional GOTO action to
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# the next lookup from the fixed pipeline.
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#
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# A chain can only be used if there is a GOTO action correctly set up from the
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# prior lookup in the processing pipeline. Setting up all chains is not
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# mandatory.
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# NOTE: VCAP IS1 currently uses only S1_NORMAL half keys and VCAP IS2
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# dynamically chooses between MAC_ETYPE, ARP, IP4_TCP_UDP, IP4_OTHER, which are
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# all half keys as well.
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create_tcam_skeleton()
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{
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local eth=$1
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tc qdisc add dev $eth clsact
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# VCAP IS1 is the Ingress Classification TCAM and can offload the
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# following actions:
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# - skbedit priority
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# - vlan pop
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# - vlan modify
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# - goto (only in lookup 2, the last IS1 lookup)
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tc filter add dev $eth ingress chain 0 pref 49152 flower \
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skip_sw action goto chain $(IS1 0)
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tc filter add dev $eth ingress chain $(IS1 0) pref 49152 \
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flower skip_sw action goto chain $(IS1 1)
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tc filter add dev $eth ingress chain $(IS1 1) pref 49152 \
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flower skip_sw action goto chain $(IS1 2)
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tc filter add dev $eth ingress chain $(IS1 2) pref 49152 \
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flower skip_sw action goto chain $(IS2 0 0)
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# VCAP IS2 is the Security Enforcement ingress TCAM and can offload the
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# following actions:
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# - trap
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# - drop
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# - police
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# The two VCAP IS2 lookups can be segmented into up to 256 groups of
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# rules, called Policies. A Policy is selected through the Policy
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# Association Group (PAG) action of VCAP IS1 (which is the
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# GOTO offload).
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tc filter add dev $eth ingress chain $(IS2 0 0) pref 49152 \
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flower skip_sw action goto chain $(IS2 1 0)
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}
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setup_prepare()
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{
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ip link set $swp1 up
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ip link set $swp2 up
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ip link set $h2 up
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ip link set $h1 up
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create_tcam_skeleton $swp1
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ip link add br0 type bridge
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ip link set $swp1 master br0
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ip link set $swp2 master br0
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ip link set br0 up
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ip link add link $h1 name $h1.100 type vlan id 100
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ip link set $h1.100 up
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ip link add link $h1 name $h1.200 type vlan id 200
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ip link set $h1.200 up
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tc filter add dev $swp1 ingress chain $(IS1 1) pref 1 \
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protocol 802.1Q flower skip_sw vlan_id 100 \
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action vlan pop \
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action goto chain $(IS1 2)
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tc filter add dev $swp1 egress chain $(ES0) pref 1 \
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flower skip_sw indev $swp2 \
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action vlan push protocol 802.1Q id 100
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tc filter add dev $swp1 ingress chain $(IS1 0) pref 2 \
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protocol ipv4 flower skip_sw src_ip 10.1.1.2 \
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action skbedit priority 7 \
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action goto chain $(IS1 1)
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tc filter add dev $swp1 ingress chain $(IS2 0 0) pref 1 \
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protocol ipv4 flower skip_sw ip_proto udp dst_port 5201 \
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action police rate 50mbit burst 64k conform-exceed drop/pipe \
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action goto chain $(IS2 1 0)
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}
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cleanup()
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{
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ip link del $h1.200
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ip link del $h1.100
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tc qdisc del dev $swp1 clsact
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ip link del br0
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}
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test_vlan_pop()
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{
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local h1_mac=$(mac_get $h1)
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local h2_mac=$(mac_get $h2)
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RET=0
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tcpdump_start $h2
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# Work around Mausezahn VLAN builder bug
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# (https://github.com/netsniff-ng/netsniff-ng/issues/225) by using
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# an 8021q upper
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$MZ $h1.100 -q -c 1 -p 64 -a $h1_mac -b $h2_mac -t ip
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sleep 1
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tcpdump_stop $h2
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tcpdump_show $h2 | grep -q "$h1_mac > $h2_mac, ethertype IPv4"
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check_err "$?" "untagged reception"
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tcpdump_cleanup $h2
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log_test "VLAN pop"
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}
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test_vlan_push()
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{
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local h1_mac=$(mac_get $h1)
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local h2_mac=$(mac_get $h2)
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RET=0
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tcpdump_start $h1.100
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$MZ $h2 -q -c 1 -p 64 -a $h2_mac -b $h1_mac -t ip
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sleep 1
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tcpdump_stop $h1.100
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tcpdump_show $h1.100 | grep -q "$h2_mac > $h1_mac"
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check_err "$?" "tagged reception"
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tcpdump_cleanup $h1.100
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log_test "VLAN push"
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}
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test_vlan_ingress_modify()
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{
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local h1_mac=$(mac_get $h1)
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local h2_mac=$(mac_get $h2)
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RET=0
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ip link set br0 type bridge vlan_filtering 1
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bridge vlan add dev $swp1 vid 200
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bridge vlan add dev $swp1 vid 300
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bridge vlan add dev $swp2 vid 300
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tc filter add dev $swp1 ingress chain $(IS1 2) pref 3 \
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protocol 802.1Q flower skip_sw vlan_id 200 src_mac $h1_mac \
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action vlan modify id 300 \
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action goto chain $(IS2 0 0)
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tcpdump_start $h2
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$MZ $h1.200 -q -c 1 -p 64 -a $h1_mac -b $h2_mac -t ip
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sleep 1
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tcpdump_stop $h2
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tcpdump_show $h2 | grep -q "$h1_mac > $h2_mac, .* vlan 300"
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check_err "$?" "tagged reception"
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tcpdump_cleanup $h2
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tc filter del dev $swp1 ingress chain $(IS1 2) pref 3
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bridge vlan del dev $swp1 vid 200
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bridge vlan del dev $swp1 vid 300
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bridge vlan del dev $swp2 vid 300
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ip link set br0 type bridge vlan_filtering 0
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log_test "Ingress VLAN modification"
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}
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test_vlan_egress_modify()
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{
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local h1_mac=$(mac_get $h1)
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local h2_mac=$(mac_get $h2)
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RET=0
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tc qdisc add dev $swp2 clsact
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ip link set br0 type bridge vlan_filtering 1
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bridge vlan add dev $swp1 vid 200
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bridge vlan add dev $swp2 vid 200
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tc filter add dev $swp2 egress chain $(ES0) pref 3 \
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protocol 802.1Q flower skip_sw vlan_id 200 vlan_prio 0 \
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action vlan modify id 300 priority 7
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tcpdump_start $h2
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$MZ $h1.200 -q -c 1 -p 64 -a $h1_mac -b $h2_mac -t ip
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sleep 1
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tcpdump_stop $h2
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tcpdump_show $h2 | grep -q "$h1_mac > $h2_mac, .* vlan 300"
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check_err "$?" "tagged reception"
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tcpdump_cleanup $h2
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tc filter del dev $swp2 egress chain $(ES0) pref 3
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tc qdisc del dev $swp2 clsact
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bridge vlan del dev $swp1 vid 200
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bridge vlan del dev $swp2 vid 200
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ip link set br0 type bridge vlan_filtering 0
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log_test "Egress VLAN modification"
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}
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test_skbedit_priority()
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{
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local h1_mac=$(mac_get $h1)
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local h2_mac=$(mac_get $h2)
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local num_pkts=100
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before=$(ethtool_stats_get $swp1 'rx_green_prio_7')
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$MZ $h1 -q -c $num_pkts -p 64 -a $h1_mac -b $h2_mac -t ip -A 10.1.1.2
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after=$(ethtool_stats_get $swp1 'rx_green_prio_7')
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if [ $((after - before)) = $num_pkts ]; then
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RET=0
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else
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RET=1
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fi
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log_test "Frame prioritization"
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}
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trap cleanup EXIT
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ALL_TESTS="
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test_vlan_pop
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test_vlan_push
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test_vlan_ingress_modify
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test_vlan_egress_modify
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test_skbedit_priority
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"
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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