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| author |   Shmulik Ladkani <shmulik.ladkani@gmail.com> | 2022-08-21 14:35:19 +0300 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2022-08-23 22:48:12 +0200 |
| commit | d6513727c2af39a8cffb0d9b07376e51a85f347f (patch) | |
| tree | 8921b6c73ef0bd0cfcb561954bb42c0e8cc4f98e /tools/testing/selftests/bpf/prog_tests | |
| parent | bpf, test_run: Propagate bpf_flow_dissect's retval to user's bpf_attr.test.retval (diff) | |
| download | linux-dev-d6513727c2af39a8cffb0d9b07376e51a85f347f.tar.xz linux-dev-d6513727c2af39a8cffb0d9b07376e51a85f347f.zip | |
bpf, selftests: Test BPF_FLOW_DISSECTOR_CONTINUE
The dissector program returns BPF_FLOW_DISSECTOR_CONTINUE (and avoids
setting skb->flow_keys or last_dissection map) in case it encounters
IP packets whose (outer) source address is 127.0.0.127.
Additional test is added to prog_tests/flow_dissector.c which sets
this address as test's pkk.iph.saddr, with the expected retval of
BPF_FLOW_DISSECTOR_CONTINUE.
Also, legacy test_flow_dissector.sh was similarly augmented.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20220821113519.116765-5-shmulik.ladkani@gmail.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/flow_dissector.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c index 8fa3c454995e..7acca37a3d2b 100644 --- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c +++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c @@ -8,6 +8,8 @@ #include "bpf_flow.skel.h" +#define FLOW_CONTINUE_SADDR 0x7f00007f /* 127.0.0.127 */ + #ifndef IP_MF #define IP_MF 0x2000 #endif @@ -400,6 +402,25 @@ struct test tests[] = { .flags = BPF_FLOW_DISSECTOR_F_STOP_AT_ENCAP, .retval = BPF_OK, }, + { + .name = "ipip-encap-dissector-continue", + .pkt.ipip = { + .eth.h_proto = __bpf_constant_htons(ETH_P_IP), + .iph.ihl = 5, + .iph.protocol = IPPROTO_IPIP, + .iph.tot_len = __bpf_constant_htons(MAGIC_BYTES), + .iph.saddr = __bpf_constant_htonl(FLOW_CONTINUE_SADDR), + .iph_inner.ihl = 5, + .iph_inner.protocol = IPPROTO_TCP, + .iph_inner.tot_len = + __bpf_constant_htons(MAGIC_BYTES) - + sizeof(struct iphdr), + .tcp.doff = 5, + .tcp.source = 99, + .tcp.dest = 9090, + }, + .retval = BPF_FLOW_DISSECTOR_CONTINUE, + }, }; static int create_tap(const char *ifname) |