kernel/tools/testing/selftests/bpf/test_tc_tunnel.sh, branch linux-6.2.y

selftests/bpf: fix missing BPF object files

2022-10-21T02:05:50Z

After commit afef88e65554 ("selftests/bpf: Store BPF object files with .bpf.o extension"), we should use *.bpf.o instead of *.o. In addition, use the BPF_FILE variable to save the BPF object file name, which can be better identified and modified. Fixes: afef88e65554 ("selftests/bpf: Store BPF object files with .bpf.o extension") Signed-off-by: Wang Yufen Acked-by: Stanislav Fomichev Link: https://lore.kernel.org/r/1666235134-562-1-git-send-email-wangyufen@huawei.com Signed-off-by: Alexei Starovoitov

selftests, bpf: test_tc_tunnel.sh nc: Cannot use -p and -l

2021-07-20T20:43:00Z

When run test_tc_tunnel.sh, it complains following error ipip encap 192.168.1.1 to 192.168.1.2, type ipip, mac none len 100 test basic connectivity nc: cannot use -p and -l nc man page has: -l Listen for an incoming connection rather than initiating a connection to a remote host.Cannot be used together with any of the options -psxz. Additionally, any timeouts specified with the -w option are ignored. Correct nc in server_listen(). Signed-off-by: Vincent Li Signed-off-by: Andrii Nakryiko Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20210719223022.66681-1-vincent.mc.li@gmail.com

selftests, bpf: Extend test_tc_tunnel test with vxlan

2021-03-05T22:58:59Z

Add BPF_F_ADJ_ROOM_ENCAP_L2_ETH flag to the existing tests which encapsulates the ethernet as the inner l2 header. Update a vxlan encapsulation test case. Signed-off-by: Xuesen Huang Signed-off-by: Li Wang Signed-off-by: Daniel Borkmann Acked-by: Willem de Bruijn Link: https://lore.kernel.org/bpf/20210305123347.15311-1-hxseverything@gmail.com

selftests, bpf: Fix test_tc_tunnel hanging

2019-11-18T20:31:49Z

When run_kselftests.sh is run, it hangs after test_tc_tunnel.sh. The reason is test_tc_tunnel.sh ensures the server ('nc -l') is run all the time, starting it again every time it is expected to terminate. The exception is the final client_connect: the server is not started anymore, which ensures no process is kept running after the test is finished. For a sit test, though, the script is terminated prematurely without the final client_connect and the 'nc' process keeps running. This in turn causes the run_one function in kselftest/runner.sh to hang forever, waiting for the runaway process to finish. Ensure a remaining server is terminated on cleanup. Fixes: f6ad6accaa99 ("selftests/bpf: expand test_tc_tunnel with SIT encap") Signed-off-by: Jiri Benc Signed-off-by: Daniel Borkmann Acked-by: Willem de Bruijn Link: https://lore.kernel.org/bpf/60919291657a9ee89c708d8aababc28ebe1420be.1573821780.git.jbenc@redhat.com

selftests/bpf: expand test_tc_tunnel with SIT encap

2019-04-23T23:32:26Z

So far, all BPF tc tunnel testcases encapsulate in the same network protocol. Add an encap testcase that requires updating skb->protocol. The 6in4 tunnel encapsulates an IPv6 packet inside an IPv4 tunnel. Verify that bpf_skb_net_grow correctly updates skb->protocol to select the right protocol handler in __netif_receive_skb_core. The BPF program should also manually update the link layer header to encode the right network protocol. Changes v1->v2 - improve documentation of non-obvious logic Signed-off-by: Willem de Bruijn Tested-by: Alan Maguire Acked-by: Yonghong Song Signed-off-by: Daniel Borkmann

selftests_bpf: add L2 encap to test_tc_tunnel

2019-04-11T20:50:57Z

Update test_tc_tunnel to verify adding inner L2 header encapsulation (an MPLS label or ethernet header) works. Signed-off-by: Alan Maguire Signed-off-by: Daniel Borkmann

selftests_bpf: extend test_tc_tunnel for UDP encap

2019-04-11T20:50:56Z

commit 868d523535c2 ("bpf: add bpf_skb_adjust_room encap flags") introduced support to bpf_skb_adjust_room for GSO-friendly GRE and UDP encapsulation and later introduced associated test_tc_tunnel tests. Here those tests are extended to cover UDP encapsulation also. Signed-off-by: Alan Maguire Signed-off-by: Daniel Borkmann

bpf: test_tc_tunnel.sh needs reverse path filtering disabled

2019-03-25T14:01:54Z

test_tc_tunnel.sh sets up a pair of namespaces connected by a veth pair to verify encap/decap using bpf_skb_adjust_room. In testing this, it uses tunnel links as the peer of the bpf-based encap/decap. However because the same IP header is used for inner and outer IP, when packets arrive at the tunnel interface they will be dropped by reverse path filtering as those packets are expected on the veth interface (where the destination IP of the decapped packet is configured). To avoid this, ensure reverse path filtering is disabled for the namespace using tunneling. Fixes: 98cdabcd0798 ("selftests/bpf: bpf tunnel encap test") Signed-off-by: Alan Maguire Acked-by: Willem de Bruijn Signed-off-by: Daniel Borkmann

selftests/bpf: convert bpf tunnel test to encap modes

2019-03-22T20:52:45Z

Make the tests correctly annotate skbs with tunnel metadata. This makes the gso tests succeed. Enable them. Signed-off-by: Willem de Bruijn Signed-off-by: Alexei Starovoitov

selftests/bpf: convert bpf tunnel test to BPF_F_ADJ_ROOM_FIXED_GSO

2019-03-22T20:52:45Z

Lower route MTU to ensure packets fit in device MTU after encap, then skip the gso_size changes. Signed-off-by: Willem de Bruijn Signed-off-by: Alexei Starovoitov