selftests/bpf: Move vxlan tunnel testcases to test_progs
Move vxlan tunnel testcases from test_tunnel.sh to test_progs.
And add vxlan tunnel source testcases also. Other tunnel testcases
will be moved to test_progs step by step in the future.
Rename bpf program section name as SEC("tc") because test_progs
bpf loader could not load sections with name SEC("gre_set_tunnel").
Because of this, add bpftool to load bpf programs in test_tunnel.sh.
Signed-off-by: Kaixi Fan <fankaixi.li@bytedance.com>
Link: https://lore.kernel.org/r/20220430074844.69214-3-fankaixi.li@bytedance.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Kaixi Fan
Alexei Starovoitov
parent
26101f5ab6
commit
1ee7efd40a
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@ -0,0 +1,423 @@
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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/*
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* End-to-end eBPF tunnel test suite
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* The file 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 | metadata-mode
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* with bpf | 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 1: 172.16.1.200, IPv6: 00::22 (underlay)
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* IP 2: 172.16.1.20, IPv6: 00::bb (underlay)
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* tunnel dev <type>11, ex: gre11, IPv4: 10.1.1.200, IPv6: 1::22 (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, IPv6: 1::11 (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 local_ip=172.16.1.200, remote_ip=172.16.1.100. BPF program choose
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* the primary or secondary ip of veth1 as the local ip of tunnel. The
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* choice is made based on the value of bpf map local_ip_map.
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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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*/
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#include <arpa/inet.h>
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#include <linux/if_tun.h>
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#include <linux/limits.h>
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#include <linux/sysctl.h>
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#include <linux/time_types.h>
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#include <linux/net_tstamp.h>
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#include <net/if.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "test_progs.h"
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#include "network_helpers.h"
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#include "test_tunnel_kern.skel.h"
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#define IP4_ADDR_VETH0 "172.16.1.100"
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#define IP4_ADDR1_VETH1 "172.16.1.200"
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#define IP4_ADDR2_VETH1 "172.16.1.20"
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#define IP4_ADDR_TUNL_DEV0 "10.1.1.100"
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#define IP4_ADDR_TUNL_DEV1 "10.1.1.200"
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#define IP6_ADDR_VETH0 "::11"
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#define IP6_ADDR1_VETH1 "::22"
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#define IP6_ADDR2_VETH1 "::bb"
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#define IP4_ADDR1_HEX_VETH1 0xac1001c8
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#define IP4_ADDR2_HEX_VETH1 0xac100114
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#define IP6_ADDR1_HEX_VETH1 0x22
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#define IP6_ADDR2_HEX_VETH1 0xbb
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#define MAC_TUNL_DEV0 "52:54:00:d9:01:00"
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#define MAC_TUNL_DEV1 "52:54:00:d9:02:00"
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#define VXLAN_TUNL_DEV0 "vxlan00"
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#define VXLAN_TUNL_DEV1 "vxlan11"
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#define IP6VXLAN_TUNL_DEV0 "ip6vxlan00"
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#define IP6VXLAN_TUNL_DEV1 "ip6vxlan11"
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#define PING_ARGS "-i 0.01 -c 3 -w 10 -q"
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#define SYS(fmt, ...) \
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({ \
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char cmd[1024]; \
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snprintf(cmd, sizeof(cmd), fmt, ##__VA_ARGS__); \
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if (!ASSERT_OK(system(cmd), cmd)) \
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goto fail; \
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})
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#define SYS_NOFAIL(fmt, ...) \
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({ \
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char cmd[1024]; \
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snprintf(cmd, sizeof(cmd), fmt, ##__VA_ARGS__); \
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system(cmd); \
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})
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static int config_device(void)
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{
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SYS("ip netns add at_ns0");
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SYS("ip link add veth0 type veth peer name veth1");
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SYS("ip link set veth0 netns at_ns0");
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SYS("ip addr add " IP4_ADDR1_VETH1 "/24 dev veth1");
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SYS("ip addr add " IP4_ADDR2_VETH1 "/24 dev veth1");
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SYS("ip link set dev veth1 up mtu 1500");
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SYS("ip netns exec at_ns0 ip addr add " IP4_ADDR_VETH0 "/24 dev veth0");
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SYS("ip netns exec at_ns0 ip link set dev veth0 up mtu 1500");
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return 0;
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fail:
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return -1;
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}
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static void cleanup(void)
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{
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SYS_NOFAIL("test -f /var/run/netns/at_ns0 && ip netns delete at_ns0");
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SYS_NOFAIL("ip link del veth1 2> /dev/null");
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SYS_NOFAIL("ip link del %s 2> /dev/null", VXLAN_TUNL_DEV1);
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SYS_NOFAIL("ip link del %s 2> /dev/null", IP6VXLAN_TUNL_DEV1);
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}
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static int add_vxlan_tunnel(void)
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{
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/* at_ns0 namespace */
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SYS("ip netns exec at_ns0 ip link add dev %s type vxlan external gbp dstport 4789",
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VXLAN_TUNL_DEV0);
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SYS("ip netns exec at_ns0 ip link set dev %s address %s up",
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VXLAN_TUNL_DEV0, MAC_TUNL_DEV0);
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SYS("ip netns exec at_ns0 ip addr add dev %s %s/24",
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VXLAN_TUNL_DEV0, IP4_ADDR_TUNL_DEV0);
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SYS("ip netns exec at_ns0 ip neigh add %s lladdr %s dev %s",
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IP4_ADDR_TUNL_DEV1, MAC_TUNL_DEV1, VXLAN_TUNL_DEV0);
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/* root namespace */
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SYS("ip link add dev %s type vxlan external gbp dstport 4789",
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VXLAN_TUNL_DEV1);
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SYS("ip link set dev %s address %s up", VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);
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SYS("ip addr add dev %s %s/24", VXLAN_TUNL_DEV1, IP4_ADDR_TUNL_DEV1);
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SYS("ip neigh add %s lladdr %s dev %s",
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IP4_ADDR_TUNL_DEV0, MAC_TUNL_DEV0, VXLAN_TUNL_DEV1);
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return 0;
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fail:
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return -1;
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}
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static void delete_vxlan_tunnel(void)
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{
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SYS_NOFAIL("ip netns exec at_ns0 ip link delete dev %s",
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VXLAN_TUNL_DEV0);
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SYS_NOFAIL("ip link delete dev %s", VXLAN_TUNL_DEV1);
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}
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static int add_ip6vxlan_tunnel(void)
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{
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SYS("ip netns exec at_ns0 ip -6 addr add %s/96 dev veth0",
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IP6_ADDR_VETH0);
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SYS("ip netns exec at_ns0 ip link set dev veth0 up");
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SYS("ip -6 addr add %s/96 dev veth1", IP6_ADDR1_VETH1);
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SYS("ip -6 addr add %s/96 dev veth1", IP6_ADDR2_VETH1);
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SYS("ip link set dev veth1 up");
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/* at_ns0 namespace */
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SYS("ip netns exec at_ns0 ip link add dev %s type vxlan external dstport 4789",
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IP6VXLAN_TUNL_DEV0);
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SYS("ip netns exec at_ns0 ip addr add dev %s %s/24",
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IP6VXLAN_TUNL_DEV0, IP4_ADDR_TUNL_DEV0);
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SYS("ip netns exec at_ns0 ip link set dev %s address %s up",
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IP6VXLAN_TUNL_DEV0, MAC_TUNL_DEV0);
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/* root namespace */
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SYS("ip link add dev %s type vxlan external dstport 4789",
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IP6VXLAN_TUNL_DEV1);
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SYS("ip addr add dev %s %s/24", IP6VXLAN_TUNL_DEV1, IP4_ADDR_TUNL_DEV1);
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SYS("ip link set dev %s address %s up",
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IP6VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);
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return 0;
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fail:
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return -1;
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}
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static void delete_ip6vxlan_tunnel(void)
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{
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SYS_NOFAIL("ip netns exec at_ns0 ip -6 addr delete %s/96 dev veth0",
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IP6_ADDR_VETH0);
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SYS_NOFAIL("ip -6 addr delete %s/96 dev veth1", IP6_ADDR1_VETH1);
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SYS_NOFAIL("ip -6 addr delete %s/96 dev veth1", IP6_ADDR2_VETH1);
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SYS_NOFAIL("ip netns exec at_ns0 ip link delete dev %s",
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IP6VXLAN_TUNL_DEV0);
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SYS_NOFAIL("ip link delete dev %s", IP6VXLAN_TUNL_DEV1);
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}
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static int test_ping(int family, const char *addr)
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{
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SYS("%s %s %s > /dev/null", ping_command(family), PING_ARGS, addr);
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return 0;
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fail:
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return -1;
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}
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static int attach_tc_prog(struct bpf_tc_hook *hook, int igr_fd, int egr_fd)
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{
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DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts1, .handle = 1,
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.priority = 1, .prog_fd = igr_fd);
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DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts2, .handle = 1,
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.priority = 1, .prog_fd = egr_fd);
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int ret;
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ret = bpf_tc_hook_create(hook);
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if (!ASSERT_OK(ret, "create tc hook"))
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return ret;
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if (igr_fd >= 0) {
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hook->attach_point = BPF_TC_INGRESS;
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ret = bpf_tc_attach(hook, &opts1);
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if (!ASSERT_OK(ret, "bpf_tc_attach")) {
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bpf_tc_hook_destroy(hook);
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return ret;
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}
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}
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if (egr_fd >= 0) {
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hook->attach_point = BPF_TC_EGRESS;
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ret = bpf_tc_attach(hook, &opts2);
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if (!ASSERT_OK(ret, "bpf_tc_attach")) {
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bpf_tc_hook_destroy(hook);
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return ret;
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}
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}
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return 0;
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}
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static void test_vxlan_tunnel(void)
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{
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struct test_tunnel_kern *skel = NULL;
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struct nstoken *nstoken;
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int local_ip_map_fd;
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int set_src_prog_fd, get_src_prog_fd;
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int set_dst_prog_fd;
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int key = 0, ifindex = -1;
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uint local_ip;
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int err;
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DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
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.attach_point = BPF_TC_INGRESS);
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/* add vxlan tunnel */
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err = add_vxlan_tunnel();
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if (!ASSERT_OK(err, "add vxlan tunnel"))
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goto done;
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/* load and attach bpf prog to tunnel dev tc hook point */
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skel = test_tunnel_kern__open_and_load();
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if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
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goto done;
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ifindex = if_nametoindex(VXLAN_TUNL_DEV1);
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if (!ASSERT_NEQ(ifindex, 0, "vxlan11 ifindex"))
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goto done;
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tc_hook.ifindex = ifindex;
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get_src_prog_fd = bpf_program__fd(skel->progs.vxlan_get_tunnel_src);
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set_src_prog_fd = bpf_program__fd(skel->progs.vxlan_set_tunnel_src);
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if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
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goto done;
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if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
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goto done;
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if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
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goto done;
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/* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
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nstoken = open_netns("at_ns0");
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if (!ASSERT_OK_PTR(nstoken, "setns src"))
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goto done;
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ifindex = if_nametoindex(VXLAN_TUNL_DEV0);
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if (!ASSERT_NEQ(ifindex, 0, "vxlan00 ifindex"))
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goto done;
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tc_hook.ifindex = ifindex;
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set_dst_prog_fd = bpf_program__fd(skel->progs.vxlan_set_tunnel_dst);
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if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
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goto done;
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if (attach_tc_prog(&tc_hook, -1, set_dst_prog_fd))
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goto done;
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close_netns(nstoken);
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/* use veth1 ip 2 as tunnel source ip */
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local_ip_map_fd = bpf_map__fd(skel->maps.local_ip_map);
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if (!ASSERT_GE(local_ip_map_fd, 0, "bpf_map__fd"))
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goto done;
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local_ip = IP4_ADDR2_HEX_VETH1;
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err = bpf_map_update_elem(local_ip_map_fd, &key, &local_ip, BPF_ANY);
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if (!ASSERT_OK(err, "update bpf local_ip_map"))
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goto done;
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/* ping test */
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err = test_ping(AF_INET, IP4_ADDR_TUNL_DEV0);
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if (!ASSERT_OK(err, "test_ping"))
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goto done;
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done:
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/* delete vxlan tunnel */
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delete_vxlan_tunnel();
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if (local_ip_map_fd >= 0)
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close(local_ip_map_fd);
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if (skel)
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test_tunnel_kern__destroy(skel);
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}
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static void test_ip6vxlan_tunnel(void)
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{
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struct test_tunnel_kern *skel = NULL;
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struct nstoken *nstoken;
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int local_ip_map_fd;
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int set_src_prog_fd, get_src_prog_fd;
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int set_dst_prog_fd;
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int key = 0, ifindex = -1;
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uint local_ip;
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int err;
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DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
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.attach_point = BPF_TC_INGRESS);
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/* add vxlan tunnel */
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err = add_ip6vxlan_tunnel();
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if (!ASSERT_OK(err, "add_ip6vxlan_tunnel"))
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goto done;
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/* load and attach bpf prog to tunnel dev tc hook point */
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skel = test_tunnel_kern__open_and_load();
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if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
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goto done;
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ifindex = if_nametoindex(IP6VXLAN_TUNL_DEV1);
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if (!ASSERT_NEQ(ifindex, 0, "ip6vxlan11 ifindex"))
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goto done;
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tc_hook.ifindex = ifindex;
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get_src_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_get_tunnel_src);
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set_src_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_set_tunnel_src);
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if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
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goto done;
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if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
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goto done;
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if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
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goto done;
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/* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
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nstoken = open_netns("at_ns0");
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if (!ASSERT_OK_PTR(nstoken, "setns src"))
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goto done;
|
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ifindex = if_nametoindex(IP6VXLAN_TUNL_DEV0);
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if (!ASSERT_NEQ(ifindex, 0, "ip6vxlan00 ifindex"))
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goto done;
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tc_hook.ifindex = ifindex;
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set_dst_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_set_tunnel_dst);
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if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
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goto done;
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if (attach_tc_prog(&tc_hook, -1, set_dst_prog_fd))
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goto done;
|
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close_netns(nstoken);
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|
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/* use veth1 ip 2 as tunnel source ip */
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local_ip_map_fd = bpf_map__fd(skel->maps.local_ip_map);
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if (!ASSERT_GE(local_ip_map_fd, 0, "get local_ip_map fd"))
|
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goto done;
|
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local_ip = IP6_ADDR2_HEX_VETH1;
|
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err = bpf_map_update_elem(local_ip_map_fd, &key, &local_ip, BPF_ANY);
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if (!ASSERT_OK(err, "update bpf local_ip_map"))
|
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goto done;
|
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|
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/* ping test */
|
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err = test_ping(AF_INET, IP4_ADDR_TUNL_DEV0);
|
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if (!ASSERT_OK(err, "test_ping"))
|
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goto done;
|
||||
|
||||
done:
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||||
/* delete ipv6 vxlan tunnel */
|
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delete_ip6vxlan_tunnel();
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if (local_ip_map_fd >= 0)
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close(local_ip_map_fd);
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if (skel)
|
||||
test_tunnel_kern__destroy(skel);
|
||||
}
|
||||
|
||||
#define RUN_TEST(name) \
|
||||
({ \
|
||||
if (test__start_subtest(#name)) { \
|
||||
test_ ## name(); \
|
||||
} \
|
||||
})
|
||||
|
||||
static void *test_tunnel_run_tests(void *arg)
|
||||
{
|
||||
cleanup();
|
||||
config_device();
|
||||
|
||||
RUN_TEST(vxlan_tunnel);
|
||||
RUN_TEST(ip6vxlan_tunnel);
|
||||
|
||||
cleanup();
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void serial_test_tunnel(void)
|
||||
{
|
||||
pthread_t test_thread;
|
||||
int err;
|
||||
|
||||
/* Run the tests in their own thread to isolate the namespace changes
|
||||
* so they do not affect the environment of other tests.
|
||||
* (specifically needed because of unshare(CLONE_NEWNS) in open_netns())
|
||||
*/
|
||||
err = pthread_create(&test_thread, NULL, &test_tunnel_run_tests, NULL);
|
||||
if (ASSERT_OK(err, "pthread_create"))
|
||||
ASSERT_OK(pthread_join(test_thread, NULL), "pthread_join");
|
||||
}
|
||||
|
|
@ -40,8 +40,16 @@ struct vxlan_metadata {
|
|||
__u32 gbp;
|
||||
};
|
||||
|
||||
SEC("gre_set_tunnel")
|
||||
int _gre_set_tunnel(struct __sk_buff *skb)
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_ARRAY);
|
||||
__uint(max_entries, 1);
|
||||
__type(key, __u32);
|
||||
__type(value, __u32);
|
||||
} local_ip_map SEC(".maps");
|
||||
|
||||
|
||||
SEC("tc")
|
||||
int gre_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -62,8 +70,8 @@ int _gre_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("gre_get_tunnel")
|
||||
int _gre_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int gre_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -79,8 +87,8 @@ int _gre_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6gretap_set_tunnel")
|
||||
int _ip6gretap_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6gretap_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
|
|
@ -103,8 +111,8 @@ int _ip6gretap_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6gretap_get_tunnel")
|
||||
int _ip6gretap_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6gretap_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "key %d remote ip6 ::%x label %x\n";
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -123,8 +131,8 @@ int _ip6gretap_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("erspan_set_tunnel")
|
||||
int _erspan_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int erspan_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
struct erspan_metadata md;
|
||||
|
|
@ -166,8 +174,8 @@ int _erspan_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("erspan_get_tunnel")
|
||||
int _erspan_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
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;
|
||||
|
|
@ -207,8 +215,8 @@ int _erspan_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip4ip6erspan_set_tunnel")
|
||||
int _ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
struct erspan_metadata md;
|
||||
|
|
@ -251,8 +259,8 @@ int _ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip4ip6erspan_get_tunnel")
|
||||
int _ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
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;
|
||||
|
|
@ -293,14 +301,62 @@ int _ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("vxlan_set_tunnel")
|
||||
int _vxlan_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int vxlan_set_tunnel_dst(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
struct vxlan_metadata md;
|
||||
__u32 index = 0;
|
||||
__u32 *local_ip = NULL;
|
||||
|
||||
local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
|
||||
if (!local_ip) {
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.local_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
key.remote_ipv4 = *local_ip;
|
||||
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) {
|
||||
log_err(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) {
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
int vxlan_set_tunnel_src(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
struct vxlan_metadata md;
|
||||
__u32 index = 0;
|
||||
__u32 *local_ip = NULL;
|
||||
|
||||
local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
|
||||
if (!local_ip) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.local_ipv4 = *local_ip;
|
||||
key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
|
||||
key.tunnel_id = 2;
|
||||
key.tunnel_tos = 0;
|
||||
|
|
@ -323,13 +379,22 @@ int _vxlan_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("vxlan_get_tunnel")
|
||||
int _vxlan_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int vxlan_get_tunnel_src(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";
|
||||
char fmt2[] = "local ip 0x%x\n";
|
||||
__u32 index = 0;
|
||||
__u32 *local_ip = NULL;
|
||||
|
||||
local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
|
||||
if (!local_ip) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
|
|
@ -343,19 +408,65 @@ int _vxlan_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv4, md.gbp);
|
||||
if (key.local_ipv4 != *local_ip || md.gbp != 0x800FF) {
|
||||
bpf_printk("vxlan key %d local ip 0x%x remote ip 0x%x gbp 0x%x\n",
|
||||
key.tunnel_id, key.local_ipv4,
|
||||
key.remote_ipv4, md.gbp);
|
||||
bpf_printk("local_ip 0x%x\n", *local_ip);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6vxlan_set_tunnel")
|
||||
int _ip6vxlan_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6vxlan_set_tunnel_dst(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
__u32 index = 0;
|
||||
__u32 *local_ip;
|
||||
|
||||
local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
|
||||
if (!local_ip) {
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.local_ipv6[3] = bpf_htonl(0x11); /* ::11 */
|
||||
key.remote_ipv6[3] = bpf_htonl(*local_ip);
|
||||
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) {
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
int ip6vxlan_set_tunnel_src(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
__u32 index = 0;
|
||||
__u32 *local_ip;
|
||||
|
||||
local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
|
||||
if (!local_ip) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
__builtin_memset(&key, 0x0, sizeof(key));
|
||||
key.local_ipv6[3] = bpf_htonl(*local_ip);
|
||||
key.remote_ipv6[3] = bpf_htonl(0x11); /* ::11 */
|
||||
key.tunnel_id = 22;
|
||||
key.tunnel_tos = 0;
|
||||
|
|
@ -371,12 +482,21 @@ int _ip6vxlan_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6vxlan_get_tunnel")
|
||||
int _ip6vxlan_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6vxlan_get_tunnel_src(struct __sk_buff *skb)
|
||||
{
|
||||
char fmt[] = "key %d remote ip6 ::%x label %x\n";
|
||||
char fmt2[] = "local ip6 ::%x\n";
|
||||
struct bpf_tunnel_key key;
|
||||
int ret;
|
||||
__u32 index = 0;
|
||||
__u32 *local_ip;
|
||||
|
||||
local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
|
||||
if (!local_ip) {
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
|
|
@ -385,14 +505,20 @@ int _ip6vxlan_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
|
||||
if (bpf_ntohl(key.local_ipv6[3]) != *local_ip) {
|
||||
bpf_trace_printk(fmt, sizeof(fmt),
|
||||
key.tunnel_id,
|
||||
key.remote_ipv6[3], key.tunnel_label);
|
||||
bpf_trace_printk(fmt2, sizeof(fmt2), key.local_ipv6[3]);
|
||||
ERROR(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("geneve_set_tunnel")
|
||||
int _geneve_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int geneve_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -429,8 +555,8 @@ int _geneve_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("geneve_get_tunnel")
|
||||
int _geneve_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int geneve_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -452,8 +578,8 @@ int _geneve_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6geneve_set_tunnel")
|
||||
int _ip6geneve_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6geneve_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key;
|
||||
struct geneve_opt gopt;
|
||||
|
|
@ -490,8 +616,8 @@ int _ip6geneve_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6geneve_get_tunnel")
|
||||
int _ip6geneve_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
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;
|
||||
|
|
@ -515,8 +641,8 @@ int _ip6geneve_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip_set_tunnel")
|
||||
int _ipip_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ipip_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
|
|
@ -544,8 +670,8 @@ int _ipip_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip_get_tunnel")
|
||||
int _ipip_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ipip_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -561,8 +687,8 @@ int _ipip_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip6_set_tunnel")
|
||||
int _ipip6_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ipip6_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
|
|
@ -592,8 +718,8 @@ int _ipip6_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ipip6_get_tunnel")
|
||||
int _ipip6_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ipip6_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -611,8 +737,8 @@ int _ipip6_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6ip6_set_tunnel")
|
||||
int _ip6ip6_set_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6ip6_set_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_tunnel_key key = {};
|
||||
void *data = (void *)(long)skb->data;
|
||||
|
|
@ -641,8 +767,8 @@ int _ip6ip6_set_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("ip6ip6_get_tunnel")
|
||||
int _ip6ip6_get_tunnel(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
int ip6ip6_get_tunnel(struct __sk_buff *skb)
|
||||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
|
|
@ -660,8 +786,8 @@ int _ip6ip6_get_tunnel(struct __sk_buff *skb)
|
|||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
SEC("xfrm_get_state")
|
||||
int _xfrm_get_state(struct __sk_buff *skb)
|
||||
SEC("tc")
|
||||
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";
|
||||
|
|
|
|||
|
|
@ -45,6 +45,7 @@
|
|||
# 5) Tunnel protocol handler, ex: vxlan_rcv, decap the packet
|
||||
# 6) Forward the packet to the overlay tnl dev
|
||||
|
||||
BPF_PIN_TUNNEL_DIR="/sys/fs/bpf/tc/tunnel"
|
||||
PING_ARG="-c 3 -w 10 -q"
|
||||
ret=0
|
||||
GREEN='\033[0;92m'
|
||||
|
|
@ -155,52 +156,6 @@ add_ip6erspan_tunnel()
|
|||
ip link set dev $DEV up
|
||||
}
|
||||
|
||||
add_vxlan_tunnel()
|
||||
{
|
||||
# Set static ARP entry here because iptables set-mark works
|
||||
# on L3 packet, as a result not applying to ARP packets,
|
||||
# causing errors at get_tunnel_{key/opt}.
|
||||
|
||||
# at_ns0 namespace
|
||||
ip netns exec at_ns0 \
|
||||
ip link add dev $DEV_NS type $TYPE \
|
||||
id 2 dstport 4789 gbp remote 172.16.1.200
|
||||
ip netns exec at_ns0 \
|
||||
ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
|
||||
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
|
||||
ip netns exec at_ns0 \
|
||||
ip neigh add 10.1.1.200 lladdr 52:54:00:d9:02:00 dev $DEV_NS
|
||||
ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
|
||||
|
||||
# root namespace
|
||||
ip link add dev $DEV type $TYPE external gbp dstport 4789
|
||||
ip link set dev $DEV address 52:54:00:d9:02:00 up
|
||||
ip addr add dev $DEV 10.1.1.200/24
|
||||
ip neigh add 10.1.1.100 lladdr 52:54:00:d9:01:00 dev $DEV
|
||||
}
|
||||
|
||||
add_ip6vxlan_tunnel()
|
||||
{
|
||||
#ip netns exec at_ns0 ip -4 addr del 172.16.1.100 dev veth0
|
||||
ip netns exec at_ns0 ip -6 addr add ::11/96 dev veth0
|
||||
ip netns exec at_ns0 ip link set dev veth0 up
|
||||
#ip -4 addr del 172.16.1.200 dev veth1
|
||||
ip -6 addr add dev veth1 ::22/96
|
||||
ip link set dev veth1 up
|
||||
|
||||
# at_ns0 namespace
|
||||
ip netns exec at_ns0 \
|
||||
ip link add dev $DEV_NS type $TYPE id 22 dstport 4789 \
|
||||
local ::11 remote ::22
|
||||
ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
|
||||
ip netns exec at_ns0 ip link set dev $DEV_NS up
|
||||
|
||||
# root namespace
|
||||
ip link add dev $DEV type $TYPE external dstport 4789
|
||||
ip addr add dev $DEV 10.1.1.200/24
|
||||
ip link set dev $DEV up
|
||||
}
|
||||
|
||||
add_geneve_tunnel()
|
||||
{
|
||||
# at_ns0 namespace
|
||||
|
|
@ -403,58 +358,6 @@ test_ip6erspan()
|
|||
echo -e ${GREEN}"PASS: $TYPE"${NC}
|
||||
}
|
||||
|
||||
test_vxlan()
|
||||
{
|
||||
TYPE=vxlan
|
||||
DEV_NS=vxlan00
|
||||
DEV=vxlan11
|
||||
ret=0
|
||||
|
||||
check $TYPE
|
||||
config_device
|
||||
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
|
||||
|
|
@ -641,9 +544,11 @@ test_xfrm_tunnel()
|
|||
config_device
|
||||
> /sys/kernel/debug/tracing/trace
|
||||
setup_xfrm_tunnel
|
||||
mkdir -p ${BPF_PIN_TUNNEL_DIR}
|
||||
bpftool prog loadall ./test_tunnel_kern.o ${BPF_PIN_TUNNEL_DIR}
|
||||
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
|
||||
tc filter add dev veth1 proto ip ingress bpf da object-pinned \
|
||||
${BPF_PIN_TUNNEL_DIR}/xfrm_get_state
|
||||
ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
|
||||
sleep 1
|
||||
grep "reqid 1" /sys/kernel/debug/tracing/trace
|
||||
|
|
@ -666,13 +571,17 @@ attach_bpf()
|
|||
DEV=$1
|
||||
SET=$2
|
||||
GET=$3
|
||||
mkdir -p ${BPF_PIN_TUNNEL_DIR}
|
||||
bpftool prog loadall ./test_tunnel_kern.o ${BPF_PIN_TUNNEL_DIR}/
|
||||
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
|
||||
tc filter add dev $DEV egress bpf da object-pinned ${BPF_PIN_TUNNEL_DIR}/$SET
|
||||
tc filter add dev $DEV ingress bpf da object-pinned ${BPF_PIN_TUNNEL_DIR}/$GET
|
||||
}
|
||||
|
||||
cleanup()
|
||||
{
|
||||
rm -rf ${BPF_PIN_TUNNEL_DIR}
|
||||
|
||||
ip netns delete at_ns0 2> /dev/null
|
||||
ip link del veth1 2> /dev/null
|
||||
ip link del ipip11 2> /dev/null
|
||||
|
|
@ -681,8 +590,6 @@ cleanup()
|
|||
ip link del gretap11 2> /dev/null
|
||||
ip link del ip6gre11 2> /dev/null
|
||||
ip link del ip6gretap11 2> /dev/null
|
||||
ip link del vxlan11 2> /dev/null
|
||||
ip link del ip6vxlan11 2> /dev/null
|
||||
ip link del geneve11 2> /dev/null
|
||||
ip link del ip6geneve11 2> /dev/null
|
||||
ip link del erspan11 2> /dev/null
|
||||
|
|
@ -714,7 +621,6 @@ enable_debug()
|
|||
{
|
||||
echo 'file ip_gre.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file ip6_gre.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file vxlan.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file geneve.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
echo 'file ipip.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||
}
|
||||
|
|
@ -750,14 +656,6 @@ bpf_tunnel_test()
|
|||
test_ip6erspan v2
|
||||
errors=$(( $errors + $? ))
|
||||
|
||||
echo "Testing VXLAN tunnel..."
|
||||
test_vxlan
|
||||
errors=$(( $errors + $? ))
|
||||
|
||||
echo "Testing IP6VXLAN tunnel..."
|
||||
test_ip6vxlan
|
||||
errors=$(( $errors + $? ))
|
||||
|
||||
echo "Testing GENEVE tunnel..."
|
||||
test_geneve
|
||||
errors=$(( $errors + $? ))
|
||||
|
|
|
|||
Loading…
Reference in New Issue