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selftests/bpf: Move test_lwt_ip_encap to test_progs
test_lwt_ip_encap.sh isn't used by the BPF CI. Add a new file in the test_progs framework to migrate the tests done by test_lwt_ip_encap.sh. It uses the same network topology and the same BPF programs located in progs/test_lwt_ip_encap.c. Rework the GSO part to avoid using nc and dd. Remove test_lwt_ip_encap.sh and its Makefile entry. Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://patch.msgid.link/20250304-lwt_ip-v1-1-8fdeb9e79a56@bootlin.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Bastien Curutchet (eBPF Foundation)
Alexei Starovoitov
parent
8a6d047c8d
commit
f5e288943e
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@ -95,7 +95,7 @@ TEST_GEN_PROGS += test_progs-cpuv4
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TEST_INST_SUBDIRS += cpuv4
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TEST_INST_SUBDIRS += cpuv4
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endif
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endif
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TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
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TEST_GEN_FILES = test_tc_edt.bpf.o
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TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
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TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
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# Order correspond to 'make run_tests' order
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# Order correspond to 'make run_tests' order
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@ -104,7 +104,6 @@ TEST_PROGS := test_kmod.sh \
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test_lirc_mode2.sh \
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test_lirc_mode2.sh \
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test_xdp_vlan_mode_generic.sh \
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test_xdp_vlan_mode_generic.sh \
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test_xdp_vlan_mode_native.sh \
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test_xdp_vlan_mode_native.sh \
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test_lwt_ip_encap.sh \
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test_tc_tunnel.sh \
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test_tc_tunnel.sh \
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test_tc_edt.sh \
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test_tc_edt.sh \
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test_xdping.sh \
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test_xdping.sh \
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540
tools/testing/selftests/bpf/prog_tests/lwt_ip_encap.c
Normal file
540
tools/testing/selftests/bpf/prog_tests/lwt_ip_encap.c
Normal file
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@ -0,0 +1,540 @@
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// SPDX-License-Identifier: GPL-2.0-only
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#include <netinet/in.h>
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#include "network_helpers.h"
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#include "test_progs.h"
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#define BPF_FILE "test_lwt_ip_encap.bpf.o"
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#define NETNS_NAME_SIZE 32
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#define NETNS_BASE "ns-lwt-ip-encap"
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#define IP4_ADDR_1 "172.16.1.100"
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#define IP4_ADDR_2 "172.16.2.100"
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#define IP4_ADDR_3 "172.16.3.100"
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#define IP4_ADDR_4 "172.16.4.100"
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#define IP4_ADDR_5 "172.16.5.100"
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#define IP4_ADDR_6 "172.16.6.100"
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#define IP4_ADDR_7 "172.16.7.100"
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#define IP4_ADDR_8 "172.16.8.100"
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#define IP4_ADDR_GRE "172.16.16.100"
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#define IP4_ADDR_SRC IP4_ADDR_1
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#define IP4_ADDR_DST IP4_ADDR_4
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#define IP6_ADDR_1 "fb01::1"
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#define IP6_ADDR_2 "fb02::1"
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#define IP6_ADDR_3 "fb03::1"
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#define IP6_ADDR_4 "fb04::1"
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#define IP6_ADDR_5 "fb05::1"
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#define IP6_ADDR_6 "fb06::1"
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#define IP6_ADDR_7 "fb07::1"
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#define IP6_ADDR_8 "fb08::1"
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#define IP6_ADDR_GRE "fb10::1"
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#define IP6_ADDR_SRC IP6_ADDR_1
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#define IP6_ADDR_DST IP6_ADDR_4
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/* Setup/topology:
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*
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* NS1 NS2 NS3
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* veth1 <---> veth2 veth3 <---> veth4 (the top route)
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* veth5 <---> veth6 veth7 <---> veth8 (the bottom route)
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*
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* Each vethN gets IP[4|6]_ADDR_N address.
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*
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* IP*_ADDR_SRC = IP*_ADDR_1
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* IP*_ADDR_DST = IP*_ADDR_4
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*
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* All tests test pings from IP*_ADDR__SRC to IP*_ADDR_DST.
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*
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* By default, routes are configured to allow packets to go
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* IP*_ADDR_1 <=> IP*_ADDR_2 <=> IP*_ADDR_3 <=> IP*_ADDR_4 (the top route).
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*
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* A GRE device is installed in NS3 with IP*_ADDR_GRE, and
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* NS1/NS2 are configured to route packets to IP*_ADDR_GRE via IP*_ADDR_8
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* (the bottom route).
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*
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* Tests:
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*
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* 1. Routes NS2->IP*_ADDR_DST are brought down, so the only way a ping
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* from IP*_ADDR_SRC to IP*_ADDR_DST can work is via IP*_ADDR_GRE.
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*
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* 2a. In an egress test, a bpf LWT_XMIT program is installed on veth1
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* that encaps the packets with an IP/GRE header to route to IP*_ADDR_GRE.
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*
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* ping: SRC->[encap at veth1:egress]->GRE:decap->DST
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* ping replies go DST->SRC directly
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*
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* 2b. In an ingress test, a bpf LWT_IN program is installed on veth2
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* that encaps the packets with an IP/GRE header to route to IP*_ADDR_GRE.
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*
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* ping: SRC->[encap at veth2:ingress]->GRE:decap->DST
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* ping replies go DST->SRC directly
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*/
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static int create_ns(char *name, size_t name_sz)
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{
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if (!name)
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goto fail;
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if (!ASSERT_OK(append_tid(name, name_sz), "append TID"))
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goto fail;
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SYS(fail, "ip netns add %s", name);
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/* rp_filter gets confused by what these tests are doing, so disable it */
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SYS(fail, "ip netns exec %s sysctl -wq net.ipv4.conf.all.rp_filter=0", name);
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SYS(fail, "ip netns exec %s sysctl -wq net.ipv4.conf.default.rp_filter=0", name);
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/* Disable IPv6 DAD because it sometimes takes too long and fails tests */
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SYS(fail, "ip netns exec %s sysctl -wq net.ipv6.conf.all.accept_dad=0", name);
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SYS(fail, "ip netns exec %s sysctl -wq net.ipv6.conf.default.accept_dad=0", name);
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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 set_top_addr(const char *ns1, const char *ns2, const char *ns3)
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{
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SYS(fail, "ip -n %s a add %s/24 dev veth1", ns1, IP4_ADDR_1);
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SYS(fail, "ip -n %s a add %s/24 dev veth2", ns2, IP4_ADDR_2);
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SYS(fail, "ip -n %s a add %s/24 dev veth3", ns2, IP4_ADDR_3);
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SYS(fail, "ip -n %s a add %s/24 dev veth4", ns3, IP4_ADDR_4);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth1", ns1, IP6_ADDR_1);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth2", ns2, IP6_ADDR_2);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth3", ns2, IP6_ADDR_3);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth4", ns3, IP6_ADDR_4);
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SYS(fail, "ip -n %s link set dev veth1 up", ns1);
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SYS(fail, "ip -n %s link set dev veth2 up", ns2);
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SYS(fail, "ip -n %s link set dev veth3 up", ns2);
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SYS(fail, "ip -n %s link set dev veth4 up", ns3);
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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 set_bottom_addr(const char *ns1, const char *ns2, const char *ns3)
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{
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SYS(fail, "ip -n %s a add %s/24 dev veth5", ns1, IP4_ADDR_5);
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SYS(fail, "ip -n %s a add %s/24 dev veth6", ns2, IP4_ADDR_6);
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SYS(fail, "ip -n %s a add %s/24 dev veth7", ns2, IP4_ADDR_7);
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SYS(fail, "ip -n %s a add %s/24 dev veth8", ns3, IP4_ADDR_8);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth5", ns1, IP6_ADDR_5);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth6", ns2, IP6_ADDR_6);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth7", ns2, IP6_ADDR_7);
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SYS(fail, "ip -n %s -6 a add %s/128 dev veth8", ns3, IP6_ADDR_8);
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SYS(fail, "ip -n %s link set dev veth5 up", ns1);
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SYS(fail, "ip -n %s link set dev veth6 up", ns2);
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SYS(fail, "ip -n %s link set dev veth7 up", ns2);
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SYS(fail, "ip -n %s link set dev veth8 up", ns3);
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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 configure_vrf(const char *ns1, const char *ns2)
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{
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if (!ns1 || !ns2)
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goto fail;
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SYS(fail, "ip -n %s link add red type vrf table 1001", ns1);
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SYS(fail, "ip -n %s link set red up", ns1);
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SYS(fail, "ip -n %s route add table 1001 unreachable default metric 8192", ns1);
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SYS(fail, "ip -n %s -6 route add table 1001 unreachable default metric 8192", ns1);
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SYS(fail, "ip -n %s link set veth1 vrf red", ns1);
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SYS(fail, "ip -n %s link set veth5 vrf red", ns1);
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SYS(fail, "ip -n %s link add red type vrf table 1001", ns2);
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SYS(fail, "ip -n %s link set red up", ns2);
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SYS(fail, "ip -n %s route add table 1001 unreachable default metric 8192", ns2);
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SYS(fail, "ip -n %s -6 route add table 1001 unreachable default metric 8192", ns2);
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SYS(fail, "ip -n %s link set veth2 vrf red", ns2);
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SYS(fail, "ip -n %s link set veth3 vrf red", ns2);
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SYS(fail, "ip -n %s link set veth6 vrf red", ns2);
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SYS(fail, "ip -n %s link set veth7 vrf red", ns2);
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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 configure_ns1(const char *ns1, const char *vrf)
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{
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struct nstoken *nstoken = NULL;
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if (!ns1 || !vrf)
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goto fail;
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nstoken = open_netns(ns1);
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if (!ASSERT_OK_PTR(nstoken, "open ns1"))
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goto fail;
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/* Top route */
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SYS(fail, "ip route add %s/32 dev veth1 %s", IP4_ADDR_2, vrf);
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SYS(fail, "ip route add default dev veth1 via %s %s", IP4_ADDR_2, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth1 %s", IP6_ADDR_2, vrf);
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SYS(fail, "ip -6 route add default dev veth1 via %s %s", IP6_ADDR_2, vrf);
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/* Bottom route */
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SYS(fail, "ip route add %s/32 dev veth5 %s", IP4_ADDR_6, vrf);
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SYS(fail, "ip route add %s/32 dev veth5 via %s %s", IP4_ADDR_7, IP4_ADDR_6, vrf);
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SYS(fail, "ip route add %s/32 dev veth5 via %s %s", IP4_ADDR_8, IP4_ADDR_6, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth5 %s", IP6_ADDR_6, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth5 via %s %s", IP6_ADDR_7, IP6_ADDR_6, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth5 via %s %s", IP6_ADDR_8, IP6_ADDR_6, vrf);
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close_netns(nstoken);
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return 0;
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fail:
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close_netns(nstoken);
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return -1;
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}
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static int configure_ns2(const char *ns2, const char *vrf)
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{
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struct nstoken *nstoken = NULL;
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if (!ns2 || !vrf)
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goto fail;
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nstoken = open_netns(ns2);
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if (!ASSERT_OK_PTR(nstoken, "open ns2"))
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goto fail;
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SYS(fail, "ip netns exec %s sysctl -wq net.ipv4.ip_forward=1", ns2);
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SYS(fail, "ip netns exec %s sysctl -wq net.ipv6.conf.all.forwarding=1", ns2);
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/* Top route */
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SYS(fail, "ip route add %s/32 dev veth2 %s", IP4_ADDR_1, vrf);
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SYS(fail, "ip route add %s/32 dev veth3 %s", IP4_ADDR_4, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth2 %s", IP6_ADDR_1, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth3 %s", IP6_ADDR_4, vrf);
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/* Bottom route */
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SYS(fail, "ip route add %s/32 dev veth6 %s", IP4_ADDR_5, vrf);
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SYS(fail, "ip route add %s/32 dev veth7 %s", IP4_ADDR_8, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth6 %s", IP6_ADDR_5, vrf);
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SYS(fail, "ip -6 route add %s/128 dev veth7 %s", IP6_ADDR_8, vrf);
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|
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close_netns(nstoken);
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return 0;
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|
fail:
|
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|
close_netns(nstoken);
|
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|
return -1;
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|
}
|
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|
|
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static int configure_ns3(const char *ns3)
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|
{
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|
struct nstoken *nstoken = NULL;
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|
|
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|
if (!ns3)
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|
goto fail;
|
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|
|
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|
nstoken = open_netns(ns3);
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|
if (!ASSERT_OK_PTR(nstoken, "open ns3"))
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|
goto fail;
|
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|
|
||||||
|
/* Top route */
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SYS(fail, "ip route add %s/32 dev veth4", IP4_ADDR_3);
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|
SYS(fail, "ip route add %s/32 dev veth4 via %s", IP4_ADDR_1, IP4_ADDR_3);
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|
SYS(fail, "ip route add %s/32 dev veth4 via %s", IP4_ADDR_2, IP4_ADDR_3);
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|
SYS(fail, "ip -6 route add %s/128 dev veth4", IP6_ADDR_3);
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|
SYS(fail, "ip -6 route add %s/128 dev veth4 via %s", IP6_ADDR_1, IP6_ADDR_3);
|
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|
SYS(fail, "ip -6 route add %s/128 dev veth4 via %s", IP6_ADDR_2, IP6_ADDR_3);
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|
/* Bottom route */
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|
SYS(fail, "ip route add %s/32 dev veth8", IP4_ADDR_7);
|
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|
SYS(fail, "ip route add %s/32 dev veth8 via %s", IP4_ADDR_5, IP4_ADDR_7);
|
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|
SYS(fail, "ip route add %s/32 dev veth8 via %s", IP4_ADDR_6, IP4_ADDR_7);
|
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|
SYS(fail, "ip -6 route add %s/128 dev veth8", IP6_ADDR_7);
|
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|
SYS(fail, "ip -6 route add %s/128 dev veth8 via %s", IP6_ADDR_5, IP6_ADDR_7);
|
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|
SYS(fail, "ip -6 route add %s/128 dev veth8 via %s", IP6_ADDR_6, IP6_ADDR_7);
|
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|
|
||||||
|
/* Configure IPv4 GRE device */
|
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|
SYS(fail, "ip tunnel add gre_dev mode gre remote %s local %s ttl 255",
|
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|
IP4_ADDR_1, IP4_ADDR_GRE);
|
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|
SYS(fail, "ip link set gre_dev up");
|
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|
SYS(fail, "ip a add %s dev gre_dev", IP4_ADDR_GRE);
|
||||||
|
|
||||||
|
/* Configure IPv6 GRE device */
|
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|
SYS(fail, "ip tunnel add gre6_dev mode ip6gre remote %s local %s ttl 255",
|
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|
IP6_ADDR_1, IP6_ADDR_GRE);
|
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|
SYS(fail, "ip link set gre6_dev up");
|
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|
SYS(fail, "ip a add %s dev gre6_dev", IP6_ADDR_GRE);
|
||||||
|
|
||||||
|
close_netns(nstoken);
|
||||||
|
return 0;
|
||||||
|
fail:
|
||||||
|
close_netns(nstoken);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int setup_network(char *ns1, char *ns2, char *ns3, const char *vrf)
|
||||||
|
{
|
||||||
|
if (!ns1 || !ns2 || !ns3 || !vrf)
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
SYS(fail, "ip -n %s link add veth1 type veth peer name veth2 netns %s", ns1, ns2);
|
||||||
|
SYS(fail, "ip -n %s link add veth3 type veth peer name veth4 netns %s", ns2, ns3);
|
||||||
|
SYS(fail, "ip -n %s link add veth5 type veth peer name veth6 netns %s", ns1, ns2);
|
||||||
|
SYS(fail, "ip -n %s link add veth7 type veth peer name veth8 netns %s", ns2, ns3);
|
||||||
|
|
||||||
|
if (vrf[0]) {
|
||||||
|
if (!ASSERT_OK(configure_vrf(ns1, ns2), "configure vrf"))
|
||||||
|
goto fail;
|
||||||
|
}
|
||||||
|
if (!ASSERT_OK(set_top_addr(ns1, ns2, ns3), "set top addresses"))
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
if (!ASSERT_OK(set_bottom_addr(ns1, ns2, ns3), "set bottom addresses"))
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
if (!ASSERT_OK(configure_ns1(ns1, vrf), "configure ns1 routes"))
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
if (!ASSERT_OK(configure_ns2(ns2, vrf), "configure ns2 routes"))
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
if (!ASSERT_OK(configure_ns3(ns3), "configure ns3 routes"))
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
/* Link bottom route to the GRE tunnels */
|
||||||
|
SYS(fail, "ip -n %s route add %s/32 dev veth5 via %s %s",
|
||||||
|
ns1, IP4_ADDR_GRE, IP4_ADDR_6, vrf);
|
||||||
|
SYS(fail, "ip -n %s route add %s/32 dev veth7 via %s %s",
|
||||||
|
ns2, IP4_ADDR_GRE, IP4_ADDR_8, vrf);
|
||||||
|
SYS(fail, "ip -n %s -6 route add %s/128 dev veth5 via %s %s",
|
||||||
|
ns1, IP6_ADDR_GRE, IP6_ADDR_6, vrf);
|
||||||
|
SYS(fail, "ip -n %s -6 route add %s/128 dev veth7 via %s %s",
|
||||||
|
ns2, IP6_ADDR_GRE, IP6_ADDR_8, vrf);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
fail:
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int remove_routes_to_gredev(const char *ns1, const char *ns2, const char *vrf)
|
||||||
|
{
|
||||||
|
SYS(fail, "ip -n %s route del %s dev veth5 %s", ns1, IP4_ADDR_GRE, vrf);
|
||||||
|
SYS(fail, "ip -n %s route del %s dev veth7 %s", ns2, IP4_ADDR_GRE, vrf);
|
||||||
|
SYS(fail, "ip -n %s -6 route del %s/128 dev veth5 %s", ns1, IP6_ADDR_GRE, vrf);
|
||||||
|
SYS(fail, "ip -n %s -6 route del %s/128 dev veth7 %s", ns2, IP6_ADDR_GRE, vrf);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
fail:
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int add_unreachable_routes_to_gredev(const char *ns1, const char *ns2, const char *vrf)
|
||||||
|
{
|
||||||
|
SYS(fail, "ip -n %s route add unreachable %s/32 %s", ns1, IP4_ADDR_GRE, vrf);
|
||||||
|
SYS(fail, "ip -n %s route add unreachable %s/32 %s", ns2, IP4_ADDR_GRE, vrf);
|
||||||
|
SYS(fail, "ip -n %s -6 route add unreachable %s/128 %s", ns1, IP6_ADDR_GRE, vrf);
|
||||||
|
SYS(fail, "ip -n %s -6 route add unreachable %s/128 %s", ns2, IP6_ADDR_GRE, vrf);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
fail:
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define GSO_SIZE 5000
|
||||||
|
#define GSO_TCP_PORT 9000
|
||||||
|
/* This tests the fix from commit ea0371f78799 ("net: fix GSO in bpf_lwt_push_ip_encap") */
|
||||||
|
static int test_gso_fix(const char *ns1, const char *ns3, int family)
|
||||||
|
{
|
||||||
|
const char *ip_addr = family == AF_INET ? IP4_ADDR_DST : IP6_ADDR_DST;
|
||||||
|
char gso_packet[GSO_SIZE] = {};
|
||||||
|
struct nstoken *nstoken = NULL;
|
||||||
|
int sfd, cfd, afd;
|
||||||
|
ssize_t bytes;
|
||||||
|
int ret = -1;
|
||||||
|
|
||||||
|
if (!ns1 || !ns3)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
nstoken = open_netns(ns3);
|
||||||
|
if (!ASSERT_OK_PTR(nstoken, "open ns3"))
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
sfd = start_server_str(family, SOCK_STREAM, ip_addr, GSO_TCP_PORT, NULL);
|
||||||
|
if (!ASSERT_OK_FD(sfd, "start server"))
|
||||||
|
goto close_netns;
|
||||||
|
|
||||||
|
close_netns(nstoken);
|
||||||
|
|
||||||
|
nstoken = open_netns(ns1);
|
||||||
|
if (!ASSERT_OK_PTR(nstoken, "open ns1"))
|
||||||
|
goto close_server;
|
||||||
|
|
||||||
|
cfd = connect_to_addr_str(family, SOCK_STREAM, ip_addr, GSO_TCP_PORT, NULL);
|
||||||
|
if (!ASSERT_OK_FD(cfd, "connect to server"))
|
||||||
|
goto close_server;
|
||||||
|
|
||||||
|
close_netns(nstoken);
|
||||||
|
nstoken = NULL;
|
||||||
|
|
||||||
|
afd = accept(sfd, NULL, NULL);
|
||||||
|
if (!ASSERT_OK_FD(afd, "accept"))
|
||||||
|
goto close_client;
|
||||||
|
|
||||||
|
/* Send a packet larger than MTU */
|
||||||
|
bytes = send(cfd, gso_packet, GSO_SIZE, 0);
|
||||||
|
if (!ASSERT_EQ(bytes, GSO_SIZE, "send packet"))
|
||||||
|
goto close_accept;
|
||||||
|
|
||||||
|
/* Verify we received all expected bytes */
|
||||||
|
bytes = read(afd, gso_packet, GSO_SIZE);
|
||||||
|
if (!ASSERT_EQ(bytes, GSO_SIZE, "receive packet"))
|
||||||
|
goto close_accept;
|
||||||
|
|
||||||
|
ret = 0;
|
||||||
|
|
||||||
|
close_accept:
|
||||||
|
close(afd);
|
||||||
|
close_client:
|
||||||
|
close(cfd);
|
||||||
|
close_server:
|
||||||
|
close(sfd);
|
||||||
|
close_netns:
|
||||||
|
close_netns(nstoken);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int check_ping_ok(const char *ns1)
|
||||||
|
{
|
||||||
|
SYS(fail, "ip netns exec %s ping -c 1 -W1 -I veth1 %s > /dev/null", ns1, IP4_ADDR_DST);
|
||||||
|
SYS(fail, "ip netns exec %s ping6 -c 1 -W1 -I veth1 %s > /dev/null", ns1, IP6_ADDR_DST);
|
||||||
|
return 0;
|
||||||
|
fail:
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int check_ping_fails(const char *ns1)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = SYS_NOFAIL("ip netns exec %s ping -c 1 -W1 -I veth1 %s", ns1, IP4_ADDR_DST);
|
||||||
|
if (!ret)
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
ret = SYS_NOFAIL("ip netns exec %s ping6 -c 1 -W1 -I veth1 %s", ns1, IP6_ADDR_DST);
|
||||||
|
if (!ret)
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define EGRESS true
|
||||||
|
#define INGRESS false
|
||||||
|
#define IPV4_ENCAP true
|
||||||
|
#define IPV6_ENCAP false
|
||||||
|
static void lwt_ip_encap(bool ipv4_encap, bool egress, const char *vrf)
|
||||||
|
{
|
||||||
|
char ns1[NETNS_NAME_SIZE] = NETNS_BASE "-1-";
|
||||||
|
char ns2[NETNS_NAME_SIZE] = NETNS_BASE "-2-";
|
||||||
|
char ns3[NETNS_NAME_SIZE] = NETNS_BASE "-3-";
|
||||||
|
char *sec = ipv4_encap ? "encap_gre" : "encap_gre6";
|
||||||
|
|
||||||
|
if (!vrf)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (!ASSERT_OK(create_ns(ns1, NETNS_NAME_SIZE), "create ns1"))
|
||||||
|
goto out;
|
||||||
|
if (!ASSERT_OK(create_ns(ns2, NETNS_NAME_SIZE), "create ns2"))
|
||||||
|
goto out;
|
||||||
|
if (!ASSERT_OK(create_ns(ns3, NETNS_NAME_SIZE), "create ns3"))
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
if (!ASSERT_OK(setup_network(ns1, ns2, ns3, vrf), "setup network"))
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
/* By default, pings work */
|
||||||
|
if (!ASSERT_OK(check_ping_ok(ns1), "ping OK"))
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
/* Remove NS2->DST routes, ping fails */
|
||||||
|
SYS(out, "ip -n %s route del %s/32 dev veth3 %s", ns2, IP4_ADDR_DST, vrf);
|
||||||
|
SYS(out, "ip -n %s -6 route del %s/128 dev veth3 %s", ns2, IP6_ADDR_DST, vrf);
|
||||||
|
if (!ASSERT_OK(check_ping_fails(ns1), "ping expected fail"))
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
/* Install replacement routes (LWT/eBPF), pings succeed */
|
||||||
|
if (egress) {
|
||||||
|
SYS(out, "ip -n %s route add %s encap bpf xmit obj %s sec %s dev veth1 %s",
|
||||||
|
ns1, IP4_ADDR_DST, BPF_FILE, sec, vrf);
|
||||||
|
SYS(out, "ip -n %s -6 route add %s encap bpf xmit obj %s sec %s dev veth1 %s",
|
||||||
|
ns1, IP6_ADDR_DST, BPF_FILE, sec, vrf);
|
||||||
|
} else {
|
||||||
|
SYS(out, "ip -n %s route add %s encap bpf in obj %s sec %s dev veth2 %s",
|
||||||
|
ns2, IP4_ADDR_DST, BPF_FILE, sec, vrf);
|
||||||
|
SYS(out, "ip -n %s -6 route add %s encap bpf in obj %s sec %s dev veth2 %s",
|
||||||
|
ns2, IP6_ADDR_DST, BPF_FILE, sec, vrf);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!ASSERT_OK(check_ping_ok(ns1), "ping OK"))
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
/* Skip GSO tests with VRF: VRF routing needs properly assigned
|
||||||
|
* source IP/device, which is easy to do with ping but hard with TCP.
|
||||||
|
*/
|
||||||
|
if (egress && !vrf[0]) {
|
||||||
|
if (!ASSERT_OK(test_gso_fix(ns1, ns3, AF_INET), "test GSO"))
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Negative test: remove routes to GRE devices: ping fails */
|
||||||
|
if (!ASSERT_OK(remove_routes_to_gredev(ns1, ns2, vrf), "remove routes to gredev"))
|
||||||
|
goto out;
|
||||||
|
if (!ASSERT_OK(check_ping_fails(ns1), "ping expected fail"))
|
||||||
|
goto out;
|
||||||
|
|
||||||
|
/* Another negative test */
|
||||||
|
if (!ASSERT_OK(add_unreachable_routes_to_gredev(ns1, ns2, vrf),
|
||||||
|
"add unreachable routes"))
|
||||||
|
goto out;
|
||||||
|
ASSERT_OK(check_ping_fails(ns1), "ping expected fail");
|
||||||
|
|
||||||
|
out:
|
||||||
|
SYS_NOFAIL("ip netns del %s", ns1);
|
||||||
|
SYS_NOFAIL("ip netns del %s", ns2);
|
||||||
|
SYS_NOFAIL("ip netns del %s", ns3);
|
||||||
|
}
|
||||||
|
|
||||||
|
void test_lwt_ip_encap_vrf_ipv6(void)
|
||||||
|
{
|
||||||
|
if (test__start_subtest("egress"))
|
||||||
|
lwt_ip_encap(IPV6_ENCAP, EGRESS, "vrf red");
|
||||||
|
|
||||||
|
if (test__start_subtest("ingress"))
|
||||||
|
lwt_ip_encap(IPV6_ENCAP, INGRESS, "vrf red");
|
||||||
|
}
|
||||||
|
|
||||||
|
void test_lwt_ip_encap_vrf_ipv4(void)
|
||||||
|
{
|
||||||
|
if (test__start_subtest("egress"))
|
||||||
|
lwt_ip_encap(IPV4_ENCAP, EGRESS, "vrf red");
|
||||||
|
|
||||||
|
if (test__start_subtest("ingress"))
|
||||||
|
lwt_ip_encap(IPV4_ENCAP, INGRESS, "vrf red");
|
||||||
|
}
|
||||||
|
|
||||||
|
void test_lwt_ip_encap_ipv6(void)
|
||||||
|
{
|
||||||
|
if (test__start_subtest("egress"))
|
||||||
|
lwt_ip_encap(IPV6_ENCAP, EGRESS, "");
|
||||||
|
|
||||||
|
if (test__start_subtest("ingress"))
|
||||||
|
lwt_ip_encap(IPV6_ENCAP, INGRESS, "");
|
||||||
|
}
|
||||||
|
|
||||||
|
void test_lwt_ip_encap_ipv4(void)
|
||||||
|
{
|
||||||
|
if (test__start_subtest("egress"))
|
||||||
|
lwt_ip_encap(IPV4_ENCAP, EGRESS, "");
|
||||||
|
|
||||||
|
if (test__start_subtest("ingress"))
|
||||||
|
lwt_ip_encap(IPV4_ENCAP, INGRESS, "");
|
||||||
|
}
|
||||||
|
|
@ -1,476 +0,0 @@
|
||||||
#!/bin/bash
|
|
||||||
# SPDX-License-Identifier: GPL-2.0
|
|
||||||
#
|
|
||||||
# Setup/topology:
|
|
||||||
#
|
|
||||||
# NS1 NS2 NS3
|
|
||||||
# veth1 <---> veth2 veth3 <---> veth4 (the top route)
|
|
||||||
# veth5 <---> veth6 veth7 <---> veth8 (the bottom route)
|
|
||||||
#
|
|
||||||
# each vethN gets IPv[4|6]_N address
|
|
||||||
#
|
|
||||||
# IPv*_SRC = IPv*_1
|
|
||||||
# IPv*_DST = IPv*_4
|
|
||||||
#
|
|
||||||
# all tests test pings from IPv*_SRC to IPv*_DST
|
|
||||||
#
|
|
||||||
# by default, routes are configured to allow packets to go
|
|
||||||
# IP*_1 <=> IP*_2 <=> IP*_3 <=> IP*_4 (the top route)
|
|
||||||
#
|
|
||||||
# a GRE device is installed in NS3 with IPv*_GRE, and
|
|
||||||
# NS1/NS2 are configured to route packets to IPv*_GRE via IP*_8
|
|
||||||
# (the bottom route)
|
|
||||||
#
|
|
||||||
# Tests:
|
|
||||||
#
|
|
||||||
# 1. routes NS2->IPv*_DST are brought down, so the only way a ping
|
|
||||||
# from IP*_SRC to IP*_DST can work is via IPv*_GRE
|
|
||||||
#
|
|
||||||
# 2a. in an egress test, a bpf LWT_XMIT program is installed on veth1
|
|
||||||
# that encaps the packets with an IP/GRE header to route to IPv*_GRE
|
|
||||||
#
|
|
||||||
# ping: SRC->[encap at veth1:egress]->GRE:decap->DST
|
|
||||||
# ping replies go DST->SRC directly
|
|
||||||
#
|
|
||||||
# 2b. in an ingress test, a bpf LWT_IN program is installed on veth2
|
|
||||||
# that encaps the packets with an IP/GRE header to route to IPv*_GRE
|
|
||||||
#
|
|
||||||
# ping: SRC->[encap at veth2:ingress]->GRE:decap->DST
|
|
||||||
# ping replies go DST->SRC directly
|
|
||||||
|
|
||||||
BPF_FILE="test_lwt_ip_encap.bpf.o"
|
|
||||||
if [[ $EUID -ne 0 ]]; then
|
|
||||||
echo "This script must be run as root"
|
|
||||||
echo "FAIL"
|
|
||||||
exit 1
|
|
||||||
fi
|
|
||||||
|
|
||||||
readonly NS1="ns1-$(mktemp -u XXXXXX)"
|
|
||||||
readonly NS2="ns2-$(mktemp -u XXXXXX)"
|
|
||||||
readonly NS3="ns3-$(mktemp -u XXXXXX)"
|
|
||||||
|
|
||||||
readonly IPv4_1="172.16.1.100"
|
|
||||||
readonly IPv4_2="172.16.2.100"
|
|
||||||
readonly IPv4_3="172.16.3.100"
|
|
||||||
readonly IPv4_4="172.16.4.100"
|
|
||||||
readonly IPv4_5="172.16.5.100"
|
|
||||||
readonly IPv4_6="172.16.6.100"
|
|
||||||
readonly IPv4_7="172.16.7.100"
|
|
||||||
readonly IPv4_8="172.16.8.100"
|
|
||||||
readonly IPv4_GRE="172.16.16.100"
|
|
||||||
|
|
||||||
readonly IPv4_SRC=$IPv4_1
|
|
||||||
readonly IPv4_DST=$IPv4_4
|
|
||||||
|
|
||||||
readonly IPv6_1="fb01::1"
|
|
||||||
readonly IPv6_2="fb02::1"
|
|
||||||
readonly IPv6_3="fb03::1"
|
|
||||||
readonly IPv6_4="fb04::1"
|
|
||||||
readonly IPv6_5="fb05::1"
|
|
||||||
readonly IPv6_6="fb06::1"
|
|
||||||
readonly IPv6_7="fb07::1"
|
|
||||||
readonly IPv6_8="fb08::1"
|
|
||||||
readonly IPv6_GRE="fb10::1"
|
|
||||||
|
|
||||||
readonly IPv6_SRC=$IPv6_1
|
|
||||||
readonly IPv6_DST=$IPv6_4
|
|
||||||
|
|
||||||
TEST_STATUS=0
|
|
||||||
TESTS_SUCCEEDED=0
|
|
||||||
TESTS_FAILED=0
|
|
||||||
|
|
||||||
TMPFILE=""
|
|
||||||
|
|
||||||
process_test_results()
|
|
||||||
{
|
|
||||||
if [[ "${TEST_STATUS}" -eq 0 ]] ; then
|
|
||||||
echo "PASS"
|
|
||||||
TESTS_SUCCEEDED=$((TESTS_SUCCEEDED+1))
|
|
||||||
else
|
|
||||||
echo "FAIL"
|
|
||||||
TESTS_FAILED=$((TESTS_FAILED+1))
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
print_test_summary_and_exit()
|
|
||||||
{
|
|
||||||
echo "passed tests: ${TESTS_SUCCEEDED}"
|
|
||||||
echo "failed tests: ${TESTS_FAILED}"
|
|
||||||
if [ "${TESTS_FAILED}" -eq "0" ] ; then
|
|
||||||
exit 0
|
|
||||||
else
|
|
||||||
exit 1
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
setup()
|
|
||||||
{
|
|
||||||
set -e # exit on error
|
|
||||||
TEST_STATUS=0
|
|
||||||
|
|
||||||
# create devices and namespaces
|
|
||||||
ip netns add "${NS1}"
|
|
||||||
ip netns add "${NS2}"
|
|
||||||
ip netns add "${NS3}"
|
|
||||||
|
|
||||||
# rp_filter gets confused by what these tests are doing, so disable it
|
|
||||||
ip netns exec ${NS1} sysctl -wq net.ipv4.conf.all.rp_filter=0
|
|
||||||
ip netns exec ${NS2} sysctl -wq net.ipv4.conf.all.rp_filter=0
|
|
||||||
ip netns exec ${NS3} sysctl -wq net.ipv4.conf.all.rp_filter=0
|
|
||||||
ip netns exec ${NS1} sysctl -wq net.ipv4.conf.default.rp_filter=0
|
|
||||||
ip netns exec ${NS2} sysctl -wq net.ipv4.conf.default.rp_filter=0
|
|
||||||
ip netns exec ${NS3} sysctl -wq net.ipv4.conf.default.rp_filter=0
|
|
||||||
|
|
||||||
# disable IPv6 DAD because it sometimes takes too long and fails tests
|
|
||||||
ip netns exec ${NS1} sysctl -wq net.ipv6.conf.all.accept_dad=0
|
|
||||||
ip netns exec ${NS2} sysctl -wq net.ipv6.conf.all.accept_dad=0
|
|
||||||
ip netns exec ${NS3} sysctl -wq net.ipv6.conf.all.accept_dad=0
|
|
||||||
ip netns exec ${NS1} sysctl -wq net.ipv6.conf.default.accept_dad=0
|
|
||||||
ip netns exec ${NS2} sysctl -wq net.ipv6.conf.default.accept_dad=0
|
|
||||||
ip netns exec ${NS3} sysctl -wq net.ipv6.conf.default.accept_dad=0
|
|
||||||
|
|
||||||
ip link add veth1 type veth peer name veth2
|
|
||||||
ip link add veth3 type veth peer name veth4
|
|
||||||
ip link add veth5 type veth peer name veth6
|
|
||||||
ip link add veth7 type veth peer name veth8
|
|
||||||
|
|
||||||
ip netns exec ${NS2} sysctl -wq net.ipv4.ip_forward=1
|
|
||||||
ip netns exec ${NS2} sysctl -wq net.ipv6.conf.all.forwarding=1
|
|
||||||
|
|
||||||
ip link set veth1 netns ${NS1}
|
|
||||||
ip link set veth2 netns ${NS2}
|
|
||||||
ip link set veth3 netns ${NS2}
|
|
||||||
ip link set veth4 netns ${NS3}
|
|
||||||
ip link set veth5 netns ${NS1}
|
|
||||||
ip link set veth6 netns ${NS2}
|
|
||||||
ip link set veth7 netns ${NS2}
|
|
||||||
ip link set veth8 netns ${NS3}
|
|
||||||
|
|
||||||
if [ ! -z "${VRF}" ] ; then
|
|
||||||
ip -netns ${NS1} link add red type vrf table 1001
|
|
||||||
ip -netns ${NS1} link set red up
|
|
||||||
ip -netns ${NS1} route add table 1001 unreachable default metric 8192
|
|
||||||
ip -netns ${NS1} -6 route add table 1001 unreachable default metric 8192
|
|
||||||
ip -netns ${NS1} link set veth1 vrf red
|
|
||||||
ip -netns ${NS1} link set veth5 vrf red
|
|
||||||
|
|
||||||
ip -netns ${NS2} link add red type vrf table 1001
|
|
||||||
ip -netns ${NS2} link set red up
|
|
||||||
ip -netns ${NS2} route add table 1001 unreachable default metric 8192
|
|
||||||
ip -netns ${NS2} -6 route add table 1001 unreachable default metric 8192
|
|
||||||
ip -netns ${NS2} link set veth2 vrf red
|
|
||||||
ip -netns ${NS2} link set veth3 vrf red
|
|
||||||
ip -netns ${NS2} link set veth6 vrf red
|
|
||||||
ip -netns ${NS2} link set veth7 vrf red
|
|
||||||
fi
|
|
||||||
|
|
||||||
# configure addesses: the top route (1-2-3-4)
|
|
||||||
ip -netns ${NS1} addr add ${IPv4_1}/24 dev veth1
|
|
||||||
ip -netns ${NS2} addr add ${IPv4_2}/24 dev veth2
|
|
||||||
ip -netns ${NS2} addr add ${IPv4_3}/24 dev veth3
|
|
||||||
ip -netns ${NS3} addr add ${IPv4_4}/24 dev veth4
|
|
||||||
ip -netns ${NS1} -6 addr add ${IPv6_1}/128 nodad dev veth1
|
|
||||||
ip -netns ${NS2} -6 addr add ${IPv6_2}/128 nodad dev veth2
|
|
||||||
ip -netns ${NS2} -6 addr add ${IPv6_3}/128 nodad dev veth3
|
|
||||||
ip -netns ${NS3} -6 addr add ${IPv6_4}/128 nodad dev veth4
|
|
||||||
|
|
||||||
# configure addresses: the bottom route (5-6-7-8)
|
|
||||||
ip -netns ${NS1} addr add ${IPv4_5}/24 dev veth5
|
|
||||||
ip -netns ${NS2} addr add ${IPv4_6}/24 dev veth6
|
|
||||||
ip -netns ${NS2} addr add ${IPv4_7}/24 dev veth7
|
|
||||||
ip -netns ${NS3} addr add ${IPv4_8}/24 dev veth8
|
|
||||||
ip -netns ${NS1} -6 addr add ${IPv6_5}/128 nodad dev veth5
|
|
||||||
ip -netns ${NS2} -6 addr add ${IPv6_6}/128 nodad dev veth6
|
|
||||||
ip -netns ${NS2} -6 addr add ${IPv6_7}/128 nodad dev veth7
|
|
||||||
ip -netns ${NS3} -6 addr add ${IPv6_8}/128 nodad dev veth8
|
|
||||||
|
|
||||||
ip -netns ${NS1} link set dev veth1 up
|
|
||||||
ip -netns ${NS2} link set dev veth2 up
|
|
||||||
ip -netns ${NS2} link set dev veth3 up
|
|
||||||
ip -netns ${NS3} link set dev veth4 up
|
|
||||||
ip -netns ${NS1} link set dev veth5 up
|
|
||||||
ip -netns ${NS2} link set dev veth6 up
|
|
||||||
ip -netns ${NS2} link set dev veth7 up
|
|
||||||
ip -netns ${NS3} link set dev veth8 up
|
|
||||||
|
|
||||||
# configure routes: IP*_SRC -> veth1/IP*_2 (= top route) default;
|
|
||||||
# the bottom route to specific bottom addresses
|
|
||||||
|
|
||||||
# NS1
|
|
||||||
# top route
|
|
||||||
ip -netns ${NS1} route add ${IPv4_2}/32 dev veth1 ${VRF}
|
|
||||||
ip -netns ${NS1} route add default dev veth1 via ${IPv4_2} ${VRF} # go top by default
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_2}/128 dev veth1 ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add default dev veth1 via ${IPv6_2} ${VRF} # go top by default
|
|
||||||
# bottom route
|
|
||||||
ip -netns ${NS1} route add ${IPv4_6}/32 dev veth5 ${VRF}
|
|
||||||
ip -netns ${NS1} route add ${IPv4_7}/32 dev veth5 via ${IPv4_6} ${VRF}
|
|
||||||
ip -netns ${NS1} route add ${IPv4_8}/32 dev veth5 via ${IPv4_6} ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_6}/128 dev veth5 ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_7}/128 dev veth5 via ${IPv6_6} ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_8}/128 dev veth5 via ${IPv6_6} ${VRF}
|
|
||||||
|
|
||||||
# NS2
|
|
||||||
# top route
|
|
||||||
ip -netns ${NS2} route add ${IPv4_1}/32 dev veth2 ${VRF}
|
|
||||||
ip -netns ${NS2} route add ${IPv4_4}/32 dev veth3 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_1}/128 dev veth2 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_4}/128 dev veth3 ${VRF}
|
|
||||||
# bottom route
|
|
||||||
ip -netns ${NS2} route add ${IPv4_5}/32 dev veth6 ${VRF}
|
|
||||||
ip -netns ${NS2} route add ${IPv4_8}/32 dev veth7 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_5}/128 dev veth6 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_8}/128 dev veth7 ${VRF}
|
|
||||||
|
|
||||||
# NS3
|
|
||||||
# top route
|
|
||||||
ip -netns ${NS3} route add ${IPv4_3}/32 dev veth4
|
|
||||||
ip -netns ${NS3} route add ${IPv4_1}/32 dev veth4 via ${IPv4_3}
|
|
||||||
ip -netns ${NS3} route add ${IPv4_2}/32 dev veth4 via ${IPv4_3}
|
|
||||||
ip -netns ${NS3} -6 route add ${IPv6_3}/128 dev veth4
|
|
||||||
ip -netns ${NS3} -6 route add ${IPv6_1}/128 dev veth4 via ${IPv6_3}
|
|
||||||
ip -netns ${NS3} -6 route add ${IPv6_2}/128 dev veth4 via ${IPv6_3}
|
|
||||||
# bottom route
|
|
||||||
ip -netns ${NS3} route add ${IPv4_7}/32 dev veth8
|
|
||||||
ip -netns ${NS3} route add ${IPv4_5}/32 dev veth8 via ${IPv4_7}
|
|
||||||
ip -netns ${NS3} route add ${IPv4_6}/32 dev veth8 via ${IPv4_7}
|
|
||||||
ip -netns ${NS3} -6 route add ${IPv6_7}/128 dev veth8
|
|
||||||
ip -netns ${NS3} -6 route add ${IPv6_5}/128 dev veth8 via ${IPv6_7}
|
|
||||||
ip -netns ${NS3} -6 route add ${IPv6_6}/128 dev veth8 via ${IPv6_7}
|
|
||||||
|
|
||||||
# configure IPv4 GRE device in NS3, and a route to it via the "bottom" route
|
|
||||||
ip -netns ${NS3} tunnel add gre_dev mode gre remote ${IPv4_1} local ${IPv4_GRE} ttl 255
|
|
||||||
ip -netns ${NS3} link set gre_dev up
|
|
||||||
ip -netns ${NS3} addr add ${IPv4_GRE} dev gre_dev
|
|
||||||
ip -netns ${NS1} route add ${IPv4_GRE}/32 dev veth5 via ${IPv4_6} ${VRF}
|
|
||||||
ip -netns ${NS2} route add ${IPv4_GRE}/32 dev veth7 via ${IPv4_8} ${VRF}
|
|
||||||
|
|
||||||
|
|
||||||
# configure IPv6 GRE device in NS3, and a route to it via the "bottom" route
|
|
||||||
ip -netns ${NS3} -6 tunnel add name gre6_dev mode ip6gre remote ${IPv6_1} local ${IPv6_GRE} ttl 255
|
|
||||||
ip -netns ${NS3} link set gre6_dev up
|
|
||||||
ip -netns ${NS3} -6 addr add ${IPv6_GRE} nodad dev gre6_dev
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_GRE}/128 dev veth5 via ${IPv6_6} ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_GRE}/128 dev veth7 via ${IPv6_8} ${VRF}
|
|
||||||
|
|
||||||
TMPFILE=$(mktemp /tmp/test_lwt_ip_encap.XXXXXX)
|
|
||||||
|
|
||||||
sleep 1 # reduce flakiness
|
|
||||||
set +e
|
|
||||||
}
|
|
||||||
|
|
||||||
cleanup()
|
|
||||||
{
|
|
||||||
if [ -f ${TMPFILE} ] ; then
|
|
||||||
rm ${TMPFILE}
|
|
||||||
fi
|
|
||||||
|
|
||||||
ip netns del ${NS1} 2> /dev/null
|
|
||||||
ip netns del ${NS2} 2> /dev/null
|
|
||||||
ip netns del ${NS3} 2> /dev/null
|
|
||||||
}
|
|
||||||
|
|
||||||
trap cleanup EXIT
|
|
||||||
|
|
||||||
remove_routes_to_gredev()
|
|
||||||
{
|
|
||||||
ip -netns ${NS1} route del ${IPv4_GRE} dev veth5 ${VRF}
|
|
||||||
ip -netns ${NS2} route del ${IPv4_GRE} dev veth7 ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route del ${IPv6_GRE}/128 dev veth5 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route del ${IPv6_GRE}/128 dev veth7 ${VRF}
|
|
||||||
}
|
|
||||||
|
|
||||||
add_unreachable_routes_to_gredev()
|
|
||||||
{
|
|
||||||
ip -netns ${NS1} route add unreachable ${IPv4_GRE}/32 ${VRF}
|
|
||||||
ip -netns ${NS2} route add unreachable ${IPv4_GRE}/32 ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add unreachable ${IPv6_GRE}/128 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add unreachable ${IPv6_GRE}/128 ${VRF}
|
|
||||||
}
|
|
||||||
|
|
||||||
test_ping()
|
|
||||||
{
|
|
||||||
local readonly PROTO=$1
|
|
||||||
local readonly EXPECTED=$2
|
|
||||||
local RET=0
|
|
||||||
|
|
||||||
if [ "${PROTO}" == "IPv4" ] ; then
|
|
||||||
ip netns exec ${NS1} ping -c 1 -W 1 -I veth1 ${IPv4_DST} 2>&1 > /dev/null
|
|
||||||
RET=$?
|
|
||||||
elif [ "${PROTO}" == "IPv6" ] ; then
|
|
||||||
ip netns exec ${NS1} ping6 -c 1 -W 1 -I veth1 ${IPv6_DST} 2>&1 > /dev/null
|
|
||||||
RET=$?
|
|
||||||
else
|
|
||||||
echo " test_ping: unknown PROTO: ${PROTO}"
|
|
||||||
TEST_STATUS=1
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ "0" != "${RET}" ]; then
|
|
||||||
RET=1
|
|
||||||
fi
|
|
||||||
|
|
||||||
if [ "${EXPECTED}" != "${RET}" ] ; then
|
|
||||||
echo " test_ping failed: expected: ${EXPECTED}; got ${RET}"
|
|
||||||
TEST_STATUS=1
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
test_gso()
|
|
||||||
{
|
|
||||||
local readonly PROTO=$1
|
|
||||||
local readonly PKT_SZ=5000
|
|
||||||
local IP_DST=""
|
|
||||||
: > ${TMPFILE} # trim the capture file
|
|
||||||
|
|
||||||
# check that nc is present
|
|
||||||
command -v nc >/dev/null 2>&1 || \
|
|
||||||
{ echo >&2 "nc is not available: skipping TSO tests"; return; }
|
|
||||||
|
|
||||||
# listen on port 9000, capture TCP into $TMPFILE
|
|
||||||
if [ "${PROTO}" == "IPv4" ] ; then
|
|
||||||
IP_DST=${IPv4_DST}
|
|
||||||
ip netns exec ${NS3} bash -c \
|
|
||||||
"nc -4 -l -p 9000 > ${TMPFILE} &"
|
|
||||||
elif [ "${PROTO}" == "IPv6" ] ; then
|
|
||||||
IP_DST=${IPv6_DST}
|
|
||||||
ip netns exec ${NS3} bash -c \
|
|
||||||
"nc -6 -l -p 9000 > ${TMPFILE} &"
|
|
||||||
RET=$?
|
|
||||||
else
|
|
||||||
echo " test_gso: unknown PROTO: ${PROTO}"
|
|
||||||
TEST_STATUS=1
|
|
||||||
fi
|
|
||||||
sleep 1 # let nc start listening
|
|
||||||
|
|
||||||
# send a packet larger than MTU
|
|
||||||
ip netns exec ${NS1} bash -c \
|
|
||||||
"dd if=/dev/zero bs=$PKT_SZ count=1 > /dev/tcp/${IP_DST}/9000 2>/dev/null"
|
|
||||||
sleep 2 # let the packet get delivered
|
|
||||||
|
|
||||||
# verify we received all expected bytes
|
|
||||||
SZ=$(stat -c %s ${TMPFILE})
|
|
||||||
if [ "$SZ" != "$PKT_SZ" ] ; then
|
|
||||||
echo " test_gso failed: ${PROTO}"
|
|
||||||
TEST_STATUS=1
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
test_egress()
|
|
||||||
{
|
|
||||||
local readonly ENCAP=$1
|
|
||||||
echo "starting egress ${ENCAP} encap test ${VRF}"
|
|
||||||
setup
|
|
||||||
|
|
||||||
# by default, pings work
|
|
||||||
test_ping IPv4 0
|
|
||||||
test_ping IPv6 0
|
|
||||||
|
|
||||||
# remove NS2->DST routes, ping fails
|
|
||||||
ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3 ${VRF}
|
|
||||||
test_ping IPv4 1
|
|
||||||
test_ping IPv6 1
|
|
||||||
|
|
||||||
# install replacement routes (LWT/eBPF), pings succeed
|
|
||||||
if [ "${ENCAP}" == "IPv4" ] ; then
|
|
||||||
ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj \
|
|
||||||
${BPF_FILE} sec encap_gre dev veth1 ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj \
|
|
||||||
${BPF_FILE} sec encap_gre dev veth1 ${VRF}
|
|
||||||
elif [ "${ENCAP}" == "IPv6" ] ; then
|
|
||||||
ip -netns ${NS1} route add ${IPv4_DST} encap bpf xmit obj \
|
|
||||||
${BPF_FILE} sec encap_gre6 dev veth1 ${VRF}
|
|
||||||
ip -netns ${NS1} -6 route add ${IPv6_DST} encap bpf xmit obj \
|
|
||||||
${BPF_FILE} sec encap_gre6 dev veth1 ${VRF}
|
|
||||||
else
|
|
||||||
echo " unknown encap ${ENCAP}"
|
|
||||||
TEST_STATUS=1
|
|
||||||
fi
|
|
||||||
test_ping IPv4 0
|
|
||||||
test_ping IPv6 0
|
|
||||||
|
|
||||||
# skip GSO tests with VRF: VRF routing needs properly assigned
|
|
||||||
# source IP/device, which is easy to do with ping and hard with dd/nc.
|
|
||||||
if [ -z "${VRF}" ] ; then
|
|
||||||
test_gso IPv4
|
|
||||||
test_gso IPv6
|
|
||||||
fi
|
|
||||||
|
|
||||||
# a negative test: remove routes to GRE devices: ping fails
|
|
||||||
remove_routes_to_gredev
|
|
||||||
test_ping IPv4 1
|
|
||||||
test_ping IPv6 1
|
|
||||||
|
|
||||||
# another negative test
|
|
||||||
add_unreachable_routes_to_gredev
|
|
||||||
test_ping IPv4 1
|
|
||||||
test_ping IPv6 1
|
|
||||||
|
|
||||||
cleanup
|
|
||||||
process_test_results
|
|
||||||
}
|
|
||||||
|
|
||||||
test_ingress()
|
|
||||||
{
|
|
||||||
local readonly ENCAP=$1
|
|
||||||
echo "starting ingress ${ENCAP} encap test ${VRF}"
|
|
||||||
setup
|
|
||||||
|
|
||||||
# need to wait a bit for IPv6 to autoconf, otherwise
|
|
||||||
# ping6 sometimes fails with "unable to bind to address"
|
|
||||||
|
|
||||||
# by default, pings work
|
|
||||||
test_ping IPv4 0
|
|
||||||
test_ping IPv6 0
|
|
||||||
|
|
||||||
# remove NS2->DST routes, pings fail
|
|
||||||
ip -netns ${NS2} route del ${IPv4_DST}/32 dev veth3 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route del ${IPv6_DST}/128 dev veth3 ${VRF}
|
|
||||||
test_ping IPv4 1
|
|
||||||
test_ping IPv6 1
|
|
||||||
|
|
||||||
# install replacement routes (LWT/eBPF), pings succeed
|
|
||||||
if [ "${ENCAP}" == "IPv4" ] ; then
|
|
||||||
ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj \
|
|
||||||
${BPF_FILE} sec encap_gre dev veth2 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj \
|
|
||||||
${BPF_FILE} sec encap_gre dev veth2 ${VRF}
|
|
||||||
elif [ "${ENCAP}" == "IPv6" ] ; then
|
|
||||||
ip -netns ${NS2} route add ${IPv4_DST} encap bpf in obj \
|
|
||||||
${BPF_FILE} sec encap_gre6 dev veth2 ${VRF}
|
|
||||||
ip -netns ${NS2} -6 route add ${IPv6_DST} encap bpf in obj \
|
|
||||||
${BPF_FILE} sec encap_gre6 dev veth2 ${VRF}
|
|
||||||
else
|
|
||||||
echo "FAIL: unknown encap ${ENCAP}"
|
|
||||||
TEST_STATUS=1
|
|
||||||
fi
|
|
||||||
test_ping IPv4 0
|
|
||||||
test_ping IPv6 0
|
|
||||||
|
|
||||||
# a negative test: remove routes to GRE devices: ping fails
|
|
||||||
remove_routes_to_gredev
|
|
||||||
test_ping IPv4 1
|
|
||||||
test_ping IPv6 1
|
|
||||||
|
|
||||||
# another negative test
|
|
||||||
add_unreachable_routes_to_gredev
|
|
||||||
test_ping IPv4 1
|
|
||||||
test_ping IPv6 1
|
|
||||||
|
|
||||||
cleanup
|
|
||||||
process_test_results
|
|
||||||
}
|
|
||||||
|
|
||||||
VRF=""
|
|
||||||
test_egress IPv4
|
|
||||||
test_egress IPv6
|
|
||||||
test_ingress IPv4
|
|
||||||
test_ingress IPv6
|
|
||||||
|
|
||||||
VRF="vrf red"
|
|
||||||
test_egress IPv4
|
|
||||||
test_egress IPv6
|
|
||||||
test_ingress IPv4
|
|
||||||
test_ingress IPv6
|
|
||||||
|
|
||||||
print_test_summary_and_exit
|
|
||||||
Loading…
Reference in New Issue
Block a user