selftests/bpf: bpf tunnel test.
The patch migrates the original tests at samples/bpf/tcbpf2_kern.c
and samples/bpf/test_tunnel_bpf.sh to selftests. There are a couple
changes from the original:
1) add ipv6 vxlan, ipv6 geneve, ipv6 ipip tests
2) simplify the original ipip tests (remove iperf tests)
3) improve documentation
4) use bpf_ntoh* and bpf_hton* api
In summary, 'test_tunnel_kern.o' contains the following bpf program:
GRE: gre_set_tunnel, gre_get_tunnel
IP6GRE: ip6gretap_set_tunnel, ip6gretap_get_tunnel
ERSPAN: erspan_set_tunnel, erspan_get_tunnel
IP6ERSPAN: ip4ip6erspan_set_tunnel, ip4ip6erspan_get_tunnel
VXLAN: vxlan_set_tunnel, vxlan_get_tunnel
IP6VXLAN: ip6vxlan_set_tunnel, ip6vxlan_get_tunnel
GENEVE: geneve_set_tunnel, geneve_get_tunnel
IP6GENEVE: ip6geneve_set_tunnel, ip6geneve_get_tunnel
IPIP: ipip_set_tunnel, ipip_get_tunnel
IP6IP: ipip6_set_tunnel, ipip6_get_tunnel,
ip6ip6_set_tunnel, ip6ip6_get_tunnel
XFRM: xfrm_get_state
Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
hifive-unleashed-5.1
William Tu
Daniel Borkmann
parent
f761312023
commit
933a741e3b
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@ -32,7 +32,7 @@ TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test
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test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \
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sample_map_ret0.o test_tcpbpf_kern.o test_stacktrace_build_id.o \
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sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o test_adjust_tail.o \
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test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o
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test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o test_tunnel_kern.o
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# Order correspond to 'make run_tests' order
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TEST_PROGS := test_kmod.sh \
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@ -40,7 +40,8 @@ TEST_PROGS := test_kmod.sh \
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test_xdp_redirect.sh \
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test_xdp_meta.sh \
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test_offload.py \
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test_sock_addr.sh
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test_sock_addr.sh \
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test_tunnel.sh
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# Compile but not part of 'make run_tests'
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TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr
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@ -0,0 +1,729 @@
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# End-to-end eBPF tunnel test suite
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# The script tests BPF network tunnel implementation.
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#
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# Topology:
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# ---------
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# root namespace | at_ns0 namespace
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# |
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# ----------- | -----------
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# | tnl dev | | | tnl dev | (overlay network)
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# ----------- | -----------
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# metadata-mode | native-mode
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# with bpf |
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# |
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# ---------- | ----------
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# | veth1 | --------- | veth0 | (underlay network)
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# ---------- peer ----------
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#
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#
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# Device Configuration
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# --------------------
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# Root namespace with metadata-mode tunnel + BPF
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# Device names and addresses:
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# veth1 IP: 172.16.1.200, IPv6: 00::22 (underlay)
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# tunnel dev <type>11, ex: gre11, IPv4: 10.1.1.200 (overlay)
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#
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# Namespace at_ns0 with native tunnel
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# Device names and addresses:
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# veth0 IPv4: 172.16.1.100, IPv6: 00::11 (underlay)
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# tunnel dev <type>00, ex: gre00, IPv4: 10.1.1.100 (overlay)
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#
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#
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# End-to-end ping packet flow
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# ---------------------------
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# Most of the tests start by namespace creation, device configuration,
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# then ping the underlay and overlay network. When doing 'ping 10.1.1.100'
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# from root namespace, the following operations happen:
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# 1) Route lookup shows 10.1.1.100/24 belongs to tnl dev, fwd to tnl dev.
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# 2) Tnl device's egress BPF program is triggered and set the tunnel metadata,
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# with remote_ip=172.16.1.200 and others.
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# 3) Outer tunnel header is prepended and route the packet to veth1's egress
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# 4) veth0's ingress queue receive the tunneled packet at namespace at_ns0
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# 5) Tunnel protocol handler, ex: vxlan_rcv, decap the packet
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# 6) Forward the packet to the overlay tnl dev
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PING_ARG="-c 3 -w 10 -q"
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ret=0
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GREEN='\033[0;92m'
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RED='\033[0;31m'
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NC='\033[0m' # No Color
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config_device()
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{
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ip netns add at_ns0
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ip link add veth0 type veth peer name veth1
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ip link set veth0 netns at_ns0
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ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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ip link set dev veth1 up mtu 1500
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ip addr add dev veth1 172.16.1.200/24
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}
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add_gre_tunnel()
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{
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE seq key 2 \
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local 172.16.1.100 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# root namespace
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ip link add dev $DEV type $TYPE key 2 external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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add_ip6gretap_tunnel()
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{
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# assign ipv6 address
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ip netns exec at_ns0 ip addr add ::11/96 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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ip addr add dev veth1 ::22/96
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ip link set dev veth1 up
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE seq flowlabel 0xbcdef key 2 \
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local ::11 remote ::22
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 ip addr add dev $DEV_NS fc80::100/96
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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# root namespace
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ip link add dev $DEV type $TYPE external
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ip addr add dev $DEV 10.1.1.200/24
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ip addr add dev $DEV fc80::200/24
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ip link set dev $DEV up
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}
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add_erspan_tunnel()
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{
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# at_ns0 namespace
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if [ "$1" == "v1" ]; then
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE seq key 2 \
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local 172.16.1.100 remote 172.16.1.200 \
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erspan_ver 1 erspan 123
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else
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE seq key 2 \
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local 172.16.1.100 remote 172.16.1.200 \
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erspan_ver 2 erspan_dir egress erspan_hwid 3
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fi
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# root namespace
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ip link add dev $DEV type $TYPE external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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add_ip6erspan_tunnel()
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{
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# assign ipv6 address
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ip netns exec at_ns0 ip addr add ::11/96 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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ip addr add dev veth1 ::22/96
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ip link set dev veth1 up
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# at_ns0 namespace
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if [ "$1" == "v1" ]; then
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE seq key 2 \
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local ::11 remote ::22 \
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erspan_ver 1 erspan 123
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else
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE seq key 2 \
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local ::11 remote ::22 \
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erspan_ver 2 erspan_dir egress erspan_hwid 7
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fi
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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# root namespace
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ip link add dev $DEV type $TYPE external
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ip addr add dev $DEV 10.1.1.200/24
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ip link set dev $DEV up
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}
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add_vxlan_tunnel()
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{
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# Set static ARP entry here because iptables set-mark works
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# on L3 packet, as a result not applying to ARP packets,
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# causing errors at get_tunnel_{key/opt}.
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE \
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id 2 dstport 4789 gbp remote 172.16.1.200
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ip netns exec at_ns0 \
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ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
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ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
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# root namespace
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ip link add dev $DEV type $TYPE external gbp dstport 4789
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ip link set dev $DEV address 52:54:00:d9:02:00 up
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ip addr add dev $DEV 10.1.1.200/24
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arp -s 10.1.1.100 52:54:00:d9:01:00
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}
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add_ip6vxlan_tunnel()
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{
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#ip netns exec at_ns0 ip -4 addr del 172.16.1.100 dev veth0
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ip netns exec at_ns0 ip -6 addr add ::11/96 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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#ip -4 addr del 172.16.1.200 dev veth1
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ip -6 addr add dev veth1 ::22/96
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ip link set dev veth1 up
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE id 22 dstport 4789 \
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local ::11 remote ::22
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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# root namespace
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ip link add dev $DEV type $TYPE external dstport 4789
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ip addr add dev $DEV 10.1.1.200/24
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ip link set dev $DEV up
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}
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add_geneve_tunnel()
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{
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE \
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id 2 dstport 6081 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# root namespace
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ip link add dev $DEV type $TYPE dstport 6081 external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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add_ip6geneve_tunnel()
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{
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ip netns exec at_ns0 ip addr add ::11/96 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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ip addr add dev veth1 ::22/96
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ip link set dev veth1 up
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE id 22 \
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remote ::22 # geneve has no local option
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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# root namespace
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ip link add dev $DEV type $TYPE external
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ip addr add dev $DEV 10.1.1.200/24
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ip link set dev $DEV up
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}
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add_ipip_tunnel()
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{
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE \
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local 172.16.1.100 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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# root namespace
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ip link add dev $DEV type $TYPE external
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ip link set dev $DEV up
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ip addr add dev $DEV 10.1.1.200/24
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}
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add_ipip6tnl_tunnel()
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{
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ip netns exec at_ns0 ip addr add ::11/96 dev veth0
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ip netns exec at_ns0 ip link set dev veth0 up
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ip addr add dev veth1 ::22/96
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ip link set dev veth1 up
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# at_ns0 namespace
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type $TYPE \
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local ::11 remote ::22
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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# root namespace
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ip link add dev $DEV type $TYPE external
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ip addr add dev $DEV 10.1.1.200/24
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ip link set dev $DEV up
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}
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test_gre()
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{
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TYPE=gretap
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DEV_NS=gretap00
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DEV=gretap11
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ret=0
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check $TYPE
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config_device
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add_gre_tunnel
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attach_bpf $DEV gre_set_tunnel gre_get_tunnel
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ping $PING_ARG 10.1.1.100
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check_err $?
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ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
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check_err $?
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cleanup
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if [ $ret -ne 0 ]; then
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echo -e ${RED}"FAIL: $TYPE"${NC}
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return 1
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fi
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echo -e ${GREEN}"PASS: $TYPE"${NC}
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}
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test_ip6gre()
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{
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TYPE=ip6gre
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DEV_NS=ip6gre00
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DEV=ip6gre11
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ret=0
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check $TYPE
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config_device
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# reuse the ip6gretap function
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add_ip6gretap_tunnel
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attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
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# underlay
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ping6 $PING_ARG ::11
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# overlay: ipv4 over ipv6
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ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
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ping $PING_ARG 10.1.1.100
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check_err $?
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# overlay: ipv6 over ipv6
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ip netns exec at_ns0 ping6 $PING_ARG fc80::200
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check_err $?
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cleanup
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if [ $ret -ne 0 ]; then
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echo -e ${RED}"FAIL: $TYPE"${NC}
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return 1
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fi
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echo -e ${GREEN}"PASS: $TYPE"${NC}
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}
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test_ip6gretap()
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{
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TYPE=ip6gretap
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DEV_NS=ip6gretap00
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DEV=ip6gretap11
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ret=0
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check $TYPE
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config_device
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add_ip6gretap_tunnel
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attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
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# underlay
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ping6 $PING_ARG ::11
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# overlay: ipv4 over ipv6
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ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
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ping $PING_ARG 10.1.1.100
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check_err $?
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# overlay: ipv6 over ipv6
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ip netns exec at_ns0 ping6 $PING_ARG fc80::200
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check_err $?
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cleanup
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if [ $ret -ne 0 ]; then
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echo -e ${RED}"FAIL: $TYPE"${NC}
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return 1
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fi
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echo -e ${GREEN}"PASS: $TYPE"${NC}
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}
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test_erspan()
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{
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TYPE=erspan
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DEV_NS=erspan00
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DEV=erspan11
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ret=0
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check $TYPE
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config_device
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add_erspan_tunnel $1
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attach_bpf $DEV erspan_set_tunnel erspan_get_tunnel
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ping $PING_ARG 10.1.1.100
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check_err $?
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ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
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check_err $?
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cleanup
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if [ $ret -ne 0 ]; then
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echo -e ${RED}"FAIL: $TYPE"${NC}
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return 1
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fi
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echo -e ${GREEN}"PASS: $TYPE"${NC}
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}
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test_ip6erspan()
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{
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TYPE=ip6erspan
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DEV_NS=ip6erspan00
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DEV=ip6erspan11
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ret=0
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check $TYPE
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config_device
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add_ip6erspan_tunnel $1
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attach_bpf $DEV ip4ip6erspan_set_tunnel ip4ip6erspan_get_tunnel
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ping6 $PING_ARG ::11
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ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
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check_err $?
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cleanup
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if [ $ret -ne 0 ]; then
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echo -e ${RED}"FAIL: $TYPE"${NC}
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return 1
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fi
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echo -e ${GREEN}"PASS: $TYPE"${NC}
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}
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test_vxlan()
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{
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TYPE=vxlan
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DEV_NS=vxlan00
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DEV=vxlan11
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ret=0
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check $TYPE
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config_device
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add_vxlan_tunnel
|
||||
attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
|
||||
ping $PING_ARG 10.1.1.100
|
||||
check_err $?
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: $TYPE"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: $TYPE"${NC}
|
||||
}
|
||||
|
||||
test_ip6vxlan()
|
||||
{
|
||||
TYPE=vxlan
|
||||
DEV_NS=ip6vxlan00
|
||||
DEV=ip6vxlan11
|
||||
ret=0
|
||||
|
||||
check $TYPE
|
||||
config_device
|
||||
add_ip6vxlan_tunnel
|
||||
ip link set dev veth1 mtu 1500
|
||||
attach_bpf $DEV ip6vxlan_set_tunnel ip6vxlan_get_tunnel
|
||||
# underlay
|
||||
ping6 $PING_ARG ::11
|
||||
# ip4 over ip6
|
||||
ping $PING_ARG 10.1.1.100
|
||||
check_err $?
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: ip6$TYPE"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: ip6$TYPE"${NC}
|
||||
}
|
||||
|
||||
test_geneve()
|
||||
{
|
||||
TYPE=geneve
|
||||
DEV_NS=geneve00
|
||||
DEV=geneve11
|
||||
ret=0
|
||||
|
||||
check $TYPE
|
||||
config_device
|
||||
add_geneve_tunnel
|
||||
attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
|
||||
ping $PING_ARG 10.1.1.100
|
||||
check_err $?
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: $TYPE"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: $TYPE"${NC}
|
||||
}
|
||||
|
||||
test_ip6geneve()
|
||||
{
|
||||
TYPE=geneve
|
||||
DEV_NS=ip6geneve00
|
||||
DEV=ip6geneve11
|
||||
ret=0
|
||||
|
||||
check $TYPE
|
||||
config_device
|
||||
add_ip6geneve_tunnel
|
||||
attach_bpf $DEV ip6geneve_set_tunnel ip6geneve_get_tunnel
|
||||
ping $PING_ARG 10.1.1.100
|
||||
check_err $?
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: ip6$TYPE"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: ip6$TYPE"${NC}
|
||||
}
|
||||
|
||||
test_ipip()
|
||||
{
|
||||
TYPE=ipip
|
||||
DEV_NS=ipip00
|
||||
DEV=ipip11
|
||||
ret=0
|
||||
|
||||
check $TYPE
|
||||
config_device
|
||||
add_ipip_tunnel
|
||||
ip link set dev veth1 mtu 1500
|
||||
attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
|
||||
ping $PING_ARG 10.1.1.100
|
||||
check_err $?
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: $TYPE"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: $TYPE"${NC}
|
||||
}
|
||||
|
||||
test_ipip6()
|
||||
{
|
||||
TYPE=ip6tnl
|
||||
DEV_NS=ipip6tnl00
|
||||
DEV=ipip6tnl11
|
||||
ret=0
|
||||
|
||||
check $TYPE
|
||||
config_device
|
||||
add_ipip6tnl_tunnel
|
||||
ip link set dev veth1 mtu 1500
|
||||
attach_bpf $DEV ipip6_set_tunnel ipip6_get_tunnel
|
||||
# underlay
|
||||
ping6 $PING_ARG ::11
|
||||
# ip4 over ip6
|
||||
ping $PING_ARG 10.1.1.100
|
||||
check_err $?
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: $TYPE"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: $TYPE"${NC}
|
||||
}
|
||||
|
||||
setup_xfrm_tunnel()
|
||||
{
|
||||
auth=0x$(printf '1%.0s' {1..40})
|
||||
enc=0x$(printf '2%.0s' {1..32})
|
||||
spi_in_to_out=0x1
|
||||
spi_out_to_in=0x2
|
||||
# at_ns0 namespace
|
||||
# at_ns0 -> root
|
||||
ip netns exec at_ns0 \
|
||||
ip xfrm state add src 172.16.1.100 dst 172.16.1.200 proto esp \
|
||||
spi $spi_in_to_out reqid 1 mode tunnel \
|
||||
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
|
||||
ip netns exec at_ns0 \
|
||||
ip xfrm policy add src 10.1.1.100/32 dst 10.1.1.200/32 dir out \
|
||||
tmpl src 172.16.1.100 dst 172.16.1.200 proto esp reqid 1 \
|
||||
mode tunnel
|
||||
# root -> at_ns0
|
||||
ip netns exec at_ns0 \
|
||||
ip xfrm state add src 172.16.1.200 dst 172.16.1.100 proto esp \
|
||||
spi $spi_out_to_in reqid 2 mode tunnel \
|
||||
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
|
||||
ip netns exec at_ns0 \
|
||||
ip xfrm policy add src 10.1.1.200/32 dst 10.1.1.100/32 dir in \
|
||||
tmpl src 172.16.1.200 dst 172.16.1.100 proto esp reqid 2 \
|
||||
mode tunnel
|
||||
# address & route
|
||||
ip netns exec at_ns0 \
|
||||
ip addr add dev veth0 10.1.1.100/32
|
||||
ip netns exec at_ns0 \
|
||||
ip route add 10.1.1.200 dev veth0 via 172.16.1.200 \
|
||||
src 10.1.1.100
|
||||
|
||||
# root namespace
|
||||
# at_ns0 -> root
|
||||
ip xfrm state add src 172.16.1.100 dst 172.16.1.200 proto esp \
|
||||
spi $spi_in_to_out reqid 1 mode tunnel \
|
||||
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
|
||||
ip xfrm policy add src 10.1.1.100/32 dst 10.1.1.200/32 dir in \
|
||||
tmpl src 172.16.1.100 dst 172.16.1.200 proto esp reqid 1 \
|
||||
mode tunnel
|
||||
# root -> at_ns0
|
||||
ip xfrm state add src 172.16.1.200 dst 172.16.1.100 proto esp \
|
||||
spi $spi_out_to_in reqid 2 mode tunnel \
|
||||
auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
|
||||
ip xfrm policy add src 10.1.1.200/32 dst 10.1.1.100/32 dir out \
|
||||
tmpl src 172.16.1.200 dst 172.16.1.100 proto esp reqid 2 \
|
||||
mode tunnel
|
||||
# address & route
|
||||
ip addr add dev veth1 10.1.1.200/32
|
||||
ip route add 10.1.1.100 dev veth1 via 172.16.1.100 src 10.1.1.200
|
||||
}
|
||||
|
||||
test_xfrm_tunnel()
|
||||
{
|
||||
config_device
|
||||
#tcpdump -nei veth1 ip &
|
||||
output=$(mktemp)
|
||||
cat /sys/kernel/debug/tracing/trace_pipe | tee $output &
|
||||
setup_xfrm_tunnel
|
||||
tc qdisc add dev veth1 clsact
|
||||
tc filter add dev veth1 proto ip ingress bpf da obj test_tunnel_kern.o \
|
||||
sec xfrm_get_state
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
sleep 1
|
||||
grep "reqid 1" $output
|
||||
check_err $?
|
||||
grep "spi 0x1" $output
|
||||
check_err $?
|
||||
grep "remote ip 0xac100164" $output
|
||||
check_err $?
|
||||
cleanup
|
||||
|
||||
if [ $ret -ne 0 ]; then
|
||||
echo -e ${RED}"FAIL: xfrm tunnel"${NC}
|
||||
return 1
|
||||
fi
|
||||
echo -e ${GREEN}"PASS: xfrm tunnel"${NC}
|
||||
}
|
||||
|
||||
attach_bpf()
|
||||
{
|
||||
DEV=$1
|
||||
SET=$2
|
||||
GET=$3
|
||||
tc qdisc add dev $DEV clsact
|
||||
tc filter add dev $DEV egress bpf da obj test_tunnel_kern.o sec $SET
|
||||
tc filter add dev $DEV ingress bpf da obj test_tunnel_kern.o sec $GET
|
||||
}
|
||||
|
||||
cleanup()
|
||||
{
|
||||
ip netns delete at_ns0 2> /dev/null
|
||||
ip link del veth1 2> /dev/null
|
||||
ip link del ipip11 2> /dev/null
|
||||
ip link del ipip6tnl11 2> /dev/null
|
||||
ip link del gretap11 2> /dev/null
|
||||
ip link del ip6gre11 2> /dev/null
|
||||
ip link del ip6gretap11 2> /dev/null
|
||||
ip link del vxlan11 2> /dev/null
|
||||
ip link del ip6vxlan11 2> /dev/null
|
||||
ip link del geneve11 2> /dev/null
|
||||
ip link del ip6geneve11 2> /dev/null
|
||||
ip link del erspan11 2> /dev/null
|
||||
ip link del ip6erspan11 2> /dev/null
|
||||
}
|
||||
|
||||
cleanup_exit()
|
||||
{
|
||||
echo "CATCH SIGKILL or SIGINT, cleanup and exit"
|
||||
cleanup
|
||||
exit 0
|
||||
}
|
||||
|
||||
check()
|
||||
{
|
||||
ip link help $1 2>&1 | grep -q "^Usage:"
|
||||
if [ $? -ne 0 ];then
|
||||
echo "SKIP $1: iproute2 not support"
|
||||
cleanup
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
enable_debug()
|
||||
{
|
||||
echo 'file ip_gre.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file ip6_gre.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file vxlan.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file geneve.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file ipip.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
}
|
||||
|
||||
check_err()
|
||||
{
|
||||
if [ $ret -eq 0 ]; then
|
||||
ret=$1
|
||||
fi
|
||||
}
|
||||
|
||||
bpf_tunnel_test()
|
||||
{
|
||||
echo "Testing GRE tunnel..."
|
||||
test_gre
|
||||
echo "Testing IP6GRE tunnel..."
|
||||
test_ip6gre
|
||||
echo "Testing IP6GRETAP tunnel..."
|
||||
test_ip6gretap
|
||||
echo "Testing ERSPAN tunnel..."
|
||||
test_erspan v2
|
||||
echo "Testing IP6ERSPAN tunnel..."
|
||||
test_ip6erspan v2
|
||||
echo "Testing VXLAN tunnel..."
|
||||
test_vxlan
|
||||
echo "Testing IP6VXLAN tunnel..."
|
||||
test_ip6vxlan
|
||||
echo "Testing GENEVE tunnel..."
|
||||
test_geneve
|
||||
echo "Testing IP6GENEVE tunnel..."
|
||||
test_ip6geneve
|
||||
echo "Testing IPIP tunnel..."
|
||||
test_ipip
|
||||
echo "Testing IPIP6 tunnel..."
|
||||
test_ipip6
|
||||
echo "Testing IPSec tunnel..."
|
||||
test_xfrm_tunnel
|
||||
}
|
||||
|
||||
trap cleanup 0 3 6
|
||||
trap cleanup_exit 2 9
|
||||
|
||||
cleanup
|
||||
bpf_tunnel_test
|
||||
|
||||
exit 0
|
||||
|
|
@ -0,0 +1,713 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/* Copyright (c) 2016 VMware
|
||||
* Copyright (c) 2016 Facebook
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of version 2 of the GNU General Public
|
||||
* License as published by the Free Software Foundation.
|
||||
*/
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <linux/bpf.h>
|
||||
#include <linux/if_ether.h>
|
||||
#include <linux/if_packet.h>
|
||||
#include <linux/ip.h>
|
||||
#include <linux/ipv6.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/tcp.h>
|
||||
#include <linux/socket.h>
|
||||
#include <linux/pkt_cls.h>
|
||||
#include <linux/erspan.h>
|
||||
#include "bpf_helpers.h"
|
||||
#include "bpf_endian.h"
|
||||
|
||||
#define ERROR(ret) do {\
|
||||
char fmt[] = "ERROR line:%d ret:%d\n";\
|
||||
bpf_trace_printk(fmt, sizeof(fmt), __LINE__, ret); \
|
||||
} while (0)
|
||||
|
||||
int _version SEC("version") = 1;
|
||||
|
||||
struct geneve_opt {
|
||||
__be16 opt_class;
|
||||
__u8 type;
|
||||
__u8 length:5;
|
||||
__u8 r3:1;
|
||||
__u8 r2:1;
|
||||
__u8 r1:1;
|
||||
__u8 opt_data[8]; /* hard-coded to 8 byte */
|
||||
};
|
||||
|
||||
struct vxlan_metadata {
|
||||
__u32 gbp;
|
||||
};
|
||||
|
||||
SEC("gre_set_tunnel")
|
||||
int _gre_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_ZERO_CSUM_TX | BPF_F_SEQ_NUMBER);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("gre_get_tunnel")
|
||||
int _gre_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "key %d remote ip 0x%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), key.tunnel_id, key.remote_ipv4);
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6gretap_set_tunnel")
|
||||
int _ip6gretap_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv6[3] = bpf_htonl(0x11); /* ::11 */
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
key.tunnel_label = 0xabcde;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6 | BPF_F_ZERO_CSUM_TX |
|
||||
BPF_F_SEQ_NUMBER);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6gretap_get_tunnel")
|
||||
int _ip6gretap_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "key %d remote ip6 ::%x label %x\n";
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("erspan_set_tunnel")
|
||||
int _erspan_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
struct erspan_metadata md;
|
||||
int ret;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_ZERO_CSUM_TX);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&md, 0, sizeof(md));
|
||||
#ifdef ERSPAN_V1
|
||||
md.version = 1;
|
||||
md.u.index = bpf_htonl(123);
|
||||
#else
|
||||
__u8 direction = 1;
|
||||
__u8 hwid = 7;
|
||||
|
||||
md.version = 2;
|
||||
md.u.md2.dir = direction;
|
||||
md.u.md2.hwid = hwid & 0xf;
|
||||
md.u.md2.hwid_upper = (hwid >> 4) & 0x3;
|
||||
#endif
|
||||
|
||||
ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("erspan_get_tunnel")
|
||||
int _erspan_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "key %d remote ip 0x%x erspan version %d\n";
|
||||
struct bpf_tunnel_key key;
|
||||
struct erspan_metadata md;
|
||||
__u32 index;
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv4, md.version);
|
||||
|
||||
#ifdef ERSPAN_V1
|
||||
char fmt2[] = "\tindex %x\n";
|
||||
|
||||
index = bpf_ntohl(md.u.index);
|
||||
bpf_trace_printk(fmt2, sizeof(fmt2), index);
|
||||
#else
|
||||
char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
|
||||
|
||||
bpf_trace_printk(fmt2, sizeof(fmt2),
|
||||
md.u.md2.dir,
|
||||
(md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
|
||||
bpf_ntohl(md.u.md2.timestamp));
|
||||
#endif
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip4ip6erspan_set_tunnel")
|
||||
int _ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
struct erspan_metadata md;
|
||||
int ret;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv6[3] = bpf_htonl(0x11);
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&md, 0, sizeof(md));
|
||||
|
||||
#ifdef ERSPAN_V1
|
||||
md.u.index = bpf_htonl(123);
|
||||
md.version = 1;
|
||||
#else
|
||||
__u8 direction = 0;
|
||||
__u8 hwid = 17;
|
||||
|
||||
md.version = 2;
|
||||
md.u.md2.dir = direction;
|
||||
md.u.md2.hwid = hwid & 0xf;
|
||||
md.u.md2.hwid_upper = (hwid >> 4) & 0x3;
|
||||
#endif
|
||||
|
||||
ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip4ip6erspan_get_tunnel")
|
||||
int _ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "ip6erspan get key %d remote ip6 ::%x erspan version %d\n";
|
||||
struct bpf_tunnel_key key;
|
||||
struct erspan_metadata md;
|
||||
__u32 index;
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv4, md.version);
|
||||
|
||||
#ifdef ERSPAN_V1
|
||||
char fmt2[] = "\tindex %x\n";
|
||||
|
||||
index = bpf_ntohl(md.u.index);
|
||||
bpf_trace_printk(fmt2, sizeof(fmt2), index);
|
||||
#else
|
||||
char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
|
||||
|
||||
bpf_trace_printk(fmt2, sizeof(fmt2),
|
||||
md.u.md2.dir,
|
||||
(md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
|
||||
bpf_ntohl(md.u.md2.timestamp));
|
||||
#endif
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("vxlan_set_tunnel")
|
||||
int _vxlan_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
struct vxlan_metadata md;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_ZERO_CSUM_TX);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
md.gbp = 0x800FF; /* Set VXLAN Group Policy extension */
|
||||
ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("vxlan_get_tunnel")
|
||||
int _vxlan_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
struct vxlan_metadata md;
|
||||
char fmt[] = "key %d remote ip 0x%x vxlan gbp 0x%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv4, md.gbp);
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6vxlan_set_tunnel")
|
||||
int _ip6vxlan_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv6[3] = bpf_htonl(0x11); /* ::11 */
|
||||
key.tunnel_id = 22;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6vxlan_get_tunnel")
|
||||
int _ip6vxlan_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "key %d remote ip6 ::%x label %x\n";
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("geneve_set_tunnel")
|
||||
int _geneve_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret, ret2;
|
||||
struct bpf_tunnel_key key;
|
||||
struct geneve_opt gopt;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
__builtin_memset(&gopt, 0x0, sizeof(gopt));
|
||||
gopt.opt_class = bpf_htons(0x102); /* Open Virtual Networking (OVN) */
|
||||
gopt.type = 0x08;
|
||||
gopt.r1 = 0;
|
||||
gopt.r2 = 0;
|
||||
gopt.r3 = 0;
|
||||
gopt.length = 2; /* 4-byte multiple */
|
||||
*(int *) &gopt.opt_data = bpf_htonl(0xdeadbeef);
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_ZERO_CSUM_TX);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_set_tunnel_opt(skb, &gopt, sizeof(gopt));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("geneve_get_tunnel")
|
||||
int _geneve_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
struct geneve_opt gopt;
|
||||
char fmt[] = "key %d remote ip 0x%x geneve class 0x%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_opt(skb, &gopt, sizeof(gopt));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv4, gopt.opt_class);
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6geneve_set_tunnel")
|
||||
int _ip6geneve_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
struct geneve_opt gopt;
|
||||
int ret;
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv6[3] = bpf_htonl(0x11); /* ::11 */
|
||||
key.tunnel_id = 22;
|
||||
key.tunnel_tos = 0;
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&gopt, 0x0, sizeof(gopt));
|
||||
gopt.opt_class = bpf_htons(0x102); /* Open Virtual Networking (OVN) */
|
||||
gopt.type = 0x08;
|
||||
gopt.r1 = 0;
|
||||
gopt.r2 = 0;
|
||||
gopt.r3 = 0;
|
||||
gopt.length = 2; /* 4-byte multiple */
|
||||
*(int *) &gopt.opt_data = bpf_htonl(0xfeedbeef);
|
||||
|
||||
ret = bpf_skb_set_tunnel_opt(skb, &gopt, sizeof(gopt));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6geneve_get_tunnel")
|
||||
int _ip6geneve_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "key %d remote ip 0x%x geneve class 0x%x\n";
|
||||
struct bpf_tunnel_key key;
|
||||
struct geneve_opt gopt;
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_opt(skb, &gopt, sizeof(gopt));
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv4, gopt.opt_class);
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip_set_tunnel")
|
||||
int _ipip_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct iphdr *iph = data;
|
||||
struct tcphdr *tcp = data + sizeof(*iph);
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
int ret;
|
||||
|
||||
/* single length check */
|
||||
if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
|
||||
ERROR(1);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
key.tunnel_ttl = 64;
|
||||
if (iph->protocol == IPPROTO_ICMP) {
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
} else {
|
||||
if (iph->protocol != IPPROTO_TCP || iph->ihl != 5)
|
||||
return TC_ACT_SHOT;
|
||||
|
||||
if (tcp->dest == bpf_htons(5200))
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
else if (tcp->dest == bpf_htons(5201))
|
||||
key.remote_ipv4 = 0xac100165; /* 172.16.1.101 */
|
||||
else
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip_get_tunnel")
|
||||
int _ipip_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "remote ip 0x%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), key.remote_ipv4);
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip6_set_tunnel")
|
||||
int _ipip6_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct iphdr *iph = data;
|
||||
struct tcphdr *tcp = data + sizeof(*iph);
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
int ret;
|
||||
|
||||
/* single length check */
|
||||
if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
|
||||
ERROR(1);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.remote_ipv6[3] = bpf_htonl(0x11); /* ::11 */
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip6_get_tunnel")
|
||||
int _ipip6_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "remote ip6 %x::%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), bpf_htonl(key.remote_ipv6[0]),
|
||||
bpf_htonl(key.remote_ipv6[3]));
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6ip6_set_tunnel")
|
||||
int _ip6ip6_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
struct ipv6hdr *iph = data;
|
||||
struct tcphdr *tcp = data + sizeof(*iph);
|
||||
void *data_end = (void *)(long)skb->data_end;
|
||||
int ret;
|
||||
|
||||
/* single length check */
|
||||
if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
|
||||
ERROR(1);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
key.remote_ipv6[0] = bpf_htonl(0x2401db00);
|
||||
key.tunnel_ttl = 64;
|
||||
|
||||
if (iph->nexthdr == 58 /* NEXTHDR_ICMP */) {
|
||||
key.remote_ipv6[3] = bpf_htonl(1);
|
||||
} else {
|
||||
if (iph->nexthdr != 6 /* NEXTHDR_TCP */) {
|
||||
ERROR(iph->nexthdr);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
if (tcp->dest == bpf_htons(5200)) {
|
||||
key.remote_ipv6[3] = bpf_htonl(1);
|
||||
} else if (tcp->dest == bpf_htons(5201)) {
|
||||
key.remote_ipv6[3] = bpf_htonl(2);
|
||||
} else {
|
||||
ERROR(tcp->dest);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
}
|
||||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6ip6_get_tunnel")
|
||||
int _ip6ip6_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "remote ip6 %x::%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), bpf_htonl(key.remote_ipv6[0]),
|
||||
bpf_htonl(key.remote_ipv6[3]));
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("xfrm_get_state")
|
||||
int _xfrm_get_state(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_xfrm_state x;
|
||||
char fmt[] = "reqid %d spi 0x%x remote ip 0x%x\n";
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_xfrm_state(skb, 0, &x, sizeof(x), 0);
|
||||
if (ret < 0)
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), x.reqid, bpf_ntohl(x.spi),
|
||||
bpf_ntohl(x.remote_ipv4));
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
char _license[] SEC("license") = "GPL";
|
||||
Loading…
Reference in New Issue