selftests/bpf: Add various more tcx test cases
Add several new tcx test cases to improve test coverage. This also includes
a few new tests with ingress instead of clsact qdisc, to cover the fix from
commit dc644b540a2d ("tcx: Fix splat in ingress_destroy upon tcx_entry_free").
# ./test_progs -t tc
[...]
#234 tc_links_after:OK
#235 tc_links_append:OK
#236 tc_links_basic:OK
#237 tc_links_before:OK
#238 tc_links_chain_classic:OK
#239 tc_links_chain_mixed:OK
#240 tc_links_dev_cleanup:OK
#241 tc_links_dev_mixed:OK
#242 tc_links_ingress:OK
#243 tc_links_invalid:OK
#244 tc_links_prepend:OK
#245 tc_links_replace:OK
#246 tc_links_revision:OK
#247 tc_opts_after:OK
#248 tc_opts_append:OK
#249 tc_opts_basic:OK
#250 tc_opts_before:OK
#251 tc_opts_chain_classic:OK
#252 tc_opts_chain_mixed:OK
#253 tc_opts_delete_empty:OK
#254 tc_opts_demixed:OK
#255 tc_opts_detach:OK
#256 tc_opts_detach_after:OK
#257 tc_opts_detach_before:OK
#258 tc_opts_dev_cleanup:OK
#259 tc_opts_invalid:OK
#260 tc_opts_mixed:OK
#261 tc_opts_prepend:OK
#262 tc_opts_replace:OK
#263 tc_opts_revision:OK
[...]
Summary: 44/38 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/8699efc284b75ccdc51ddf7062fa2370330dc6c0.1692029283.git.daniel@iogearbox.net
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Daniel Borkmann
Martin KaFai Lau
parent
83a89c4b6a
commit
ccd9a8be2e
@ -1,6 +1,7 @@
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2023 Isovalent */
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#include <uapi/linux/if_link.h>
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#include <uapi/linux/pkt_sched.h>
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#include <net/if.h>
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#include <test_progs.h>
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@ -1581,3 +1582,338 @@ void serial_test_tc_links_dev_cleanup(void)
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test_tc_links_dev_cleanup_target(BPF_TCX_INGRESS);
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test_tc_links_dev_cleanup_target(BPF_TCX_EGRESS);
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}
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static void test_tc_chain_mixed(int target)
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{
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LIBBPF_OPTS(bpf_tc_opts, tc_opts, .handle = 1, .priority = 1);
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LIBBPF_OPTS(bpf_tc_hook, tc_hook, .ifindex = loopback);
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LIBBPF_OPTS(bpf_tcx_opts, optl);
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struct test_tc_link *skel;
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struct bpf_link *link;
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__u32 pid1, pid2, pid3;
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int err;
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skel = test_tc_link__open();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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goto cleanup;
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc4, target),
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0, "tc4_attach_type");
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc5, target),
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0, "tc5_attach_type");
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc6, target),
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0, "tc6_attach_type");
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err = test_tc_link__load(skel);
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if (!ASSERT_OK(err, "skel_load"))
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goto cleanup;
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pid1 = id_from_prog_fd(bpf_program__fd(skel->progs.tc4));
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pid2 = id_from_prog_fd(bpf_program__fd(skel->progs.tc5));
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pid3 = id_from_prog_fd(bpf_program__fd(skel->progs.tc6));
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ASSERT_NEQ(pid1, pid2, "prog_ids_1_2");
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ASSERT_NEQ(pid2, pid3, "prog_ids_2_3");
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assert_mprog_count(target, 0);
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tc_hook.attach_point = target == BPF_TCX_INGRESS ?
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BPF_TC_INGRESS : BPF_TC_EGRESS;
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err = bpf_tc_hook_create(&tc_hook);
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err = err == -EEXIST ? 0 : err;
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if (!ASSERT_OK(err, "bpf_tc_hook_create"))
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goto cleanup;
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tc_opts.prog_fd = bpf_program__fd(skel->progs.tc5);
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err = bpf_tc_attach(&tc_hook, &tc_opts);
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if (!ASSERT_OK(err, "bpf_tc_attach"))
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goto cleanup;
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link = bpf_program__attach_tcx(skel->progs.tc6, loopback, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc6 = link;
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assert_mprog_count(target, 1);
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ASSERT_OK(system(ping_cmd), ping_cmd);
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ASSERT_EQ(skel->bss->seen_tc4, false, "seen_tc4");
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ASSERT_EQ(skel->bss->seen_tc5, false, "seen_tc5");
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ASSERT_EQ(skel->bss->seen_tc6, true, "seen_tc6");
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skel->bss->seen_tc4 = false;
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skel->bss->seen_tc5 = false;
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skel->bss->seen_tc6 = false;
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err = bpf_link__update_program(skel->links.tc6, skel->progs.tc4);
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if (!ASSERT_OK(err, "link_update"))
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goto cleanup;
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assert_mprog_count(target, 1);
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ASSERT_OK(system(ping_cmd), ping_cmd);
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ASSERT_EQ(skel->bss->seen_tc4, true, "seen_tc4");
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ASSERT_EQ(skel->bss->seen_tc5, true, "seen_tc5");
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ASSERT_EQ(skel->bss->seen_tc6, false, "seen_tc6");
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skel->bss->seen_tc4 = false;
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skel->bss->seen_tc5 = false;
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skel->bss->seen_tc6 = false;
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err = bpf_link__detach(skel->links.tc6);
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if (!ASSERT_OK(err, "prog_detach"))
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goto cleanup;
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__assert_mprog_count(target, 0, true, loopback);
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ASSERT_OK(system(ping_cmd), ping_cmd);
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ASSERT_EQ(skel->bss->seen_tc4, false, "seen_tc4");
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ASSERT_EQ(skel->bss->seen_tc5, true, "seen_tc5");
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ASSERT_EQ(skel->bss->seen_tc6, false, "seen_tc6");
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cleanup:
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tc_opts.flags = tc_opts.prog_fd = tc_opts.prog_id = 0;
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err = bpf_tc_detach(&tc_hook, &tc_opts);
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ASSERT_OK(err, "bpf_tc_detach");
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tc_hook.attach_point = BPF_TC_INGRESS | BPF_TC_EGRESS;
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bpf_tc_hook_destroy(&tc_hook);
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test_tc_link__destroy(skel);
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}
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void serial_test_tc_links_chain_mixed(void)
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{
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test_tc_chain_mixed(BPF_TCX_INGRESS);
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test_tc_chain_mixed(BPF_TCX_EGRESS);
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}
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static void test_tc_links_ingress(int target, bool chain_tc_old,
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bool tcx_teardown_first)
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{
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LIBBPF_OPTS(bpf_tc_opts, tc_opts,
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.handle = 1,
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.priority = 1,
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);
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LIBBPF_OPTS(bpf_tc_hook, tc_hook,
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.ifindex = loopback,
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.attach_point = BPF_TC_CUSTOM,
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.parent = TC_H_INGRESS,
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);
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bool hook_created = false, tc_attached = false;
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LIBBPF_OPTS(bpf_tcx_opts, optl);
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__u32 pid1, pid2, pid3;
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struct test_tc_link *skel;
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struct bpf_link *link;
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int err;
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skel = test_tc_link__open();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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goto cleanup;
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc1, target),
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0, "tc1_attach_type");
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc2, target),
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0, "tc2_attach_type");
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err = test_tc_link__load(skel);
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if (!ASSERT_OK(err, "skel_load"))
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goto cleanup;
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pid1 = id_from_prog_fd(bpf_program__fd(skel->progs.tc1));
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pid2 = id_from_prog_fd(bpf_program__fd(skel->progs.tc2));
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pid3 = id_from_prog_fd(bpf_program__fd(skel->progs.tc3));
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ASSERT_NEQ(pid1, pid2, "prog_ids_1_2");
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ASSERT_NEQ(pid2, pid3, "prog_ids_2_3");
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assert_mprog_count(target, 0);
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if (chain_tc_old) {
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ASSERT_OK(system("tc qdisc add dev lo ingress"), "add_ingress");
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hook_created = true;
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tc_opts.prog_fd = bpf_program__fd(skel->progs.tc3);
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err = bpf_tc_attach(&tc_hook, &tc_opts);
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if (!ASSERT_OK(err, "bpf_tc_attach"))
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goto cleanup;
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tc_attached = true;
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}
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link = bpf_program__attach_tcx(skel->progs.tc1, loopback, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc1 = link;
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link = bpf_program__attach_tcx(skel->progs.tc2, loopback, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc2 = link;
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assert_mprog_count(target, 2);
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ASSERT_OK(system(ping_cmd), ping_cmd);
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ASSERT_EQ(skel->bss->seen_tc1, true, "seen_tc1");
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ASSERT_EQ(skel->bss->seen_tc2, true, "seen_tc2");
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ASSERT_EQ(skel->bss->seen_tc3, chain_tc_old, "seen_tc3");
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skel->bss->seen_tc1 = false;
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skel->bss->seen_tc2 = false;
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skel->bss->seen_tc3 = false;
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err = bpf_link__detach(skel->links.tc2);
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if (!ASSERT_OK(err, "prog_detach"))
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goto cleanup;
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assert_mprog_count(target, 1);
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ASSERT_OK(system(ping_cmd), ping_cmd);
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ASSERT_EQ(skel->bss->seen_tc1, true, "seen_tc1");
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ASSERT_EQ(skel->bss->seen_tc2, false, "seen_tc2");
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ASSERT_EQ(skel->bss->seen_tc3, chain_tc_old, "seen_tc3");
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cleanup:
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if (tc_attached) {
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tc_opts.flags = tc_opts.prog_fd = tc_opts.prog_id = 0;
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err = bpf_tc_detach(&tc_hook, &tc_opts);
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ASSERT_OK(err, "bpf_tc_detach");
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}
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ASSERT_OK(system(ping_cmd), ping_cmd);
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assert_mprog_count(target, 1);
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if (hook_created && tcx_teardown_first)
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ASSERT_OK(system("tc qdisc del dev lo ingress"), "del_ingress");
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ASSERT_OK(system(ping_cmd), ping_cmd);
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test_tc_link__destroy(skel);
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ASSERT_OK(system(ping_cmd), ping_cmd);
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if (hook_created && !tcx_teardown_first)
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ASSERT_OK(system("tc qdisc del dev lo ingress"), "del_ingress");
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ASSERT_OK(system(ping_cmd), ping_cmd);
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assert_mprog_count(target, 0);
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}
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void serial_test_tc_links_ingress(void)
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{
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test_tc_links_ingress(BPF_TCX_INGRESS, true, true);
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test_tc_links_ingress(BPF_TCX_INGRESS, true, false);
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test_tc_links_ingress(BPF_TCX_INGRESS, false, false);
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}
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static void test_tc_links_dev_mixed(int target)
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{
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LIBBPF_OPTS(bpf_tc_opts, tc_opts, .handle = 1, .priority = 1);
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LIBBPF_OPTS(bpf_tc_hook, tc_hook);
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LIBBPF_OPTS(bpf_tcx_opts, optl);
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__u32 pid1, pid2, pid3, pid4;
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struct test_tc_link *skel;
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struct bpf_link *link;
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int err, ifindex;
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ASSERT_OK(system("ip link add dev tcx_opts1 type veth peer name tcx_opts2"), "add veth");
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ifindex = if_nametoindex("tcx_opts1");
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ASSERT_NEQ(ifindex, 0, "non_zero_ifindex");
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skel = test_tc_link__open();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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goto cleanup;
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc1, target),
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0, "tc1_attach_type");
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc2, target),
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0, "tc2_attach_type");
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc3, target),
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0, "tc3_attach_type");
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ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc4, target),
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0, "tc4_attach_type");
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err = test_tc_link__load(skel);
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if (!ASSERT_OK(err, "skel_load"))
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goto cleanup;
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pid1 = id_from_prog_fd(bpf_program__fd(skel->progs.tc1));
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pid2 = id_from_prog_fd(bpf_program__fd(skel->progs.tc2));
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pid3 = id_from_prog_fd(bpf_program__fd(skel->progs.tc3));
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pid4 = id_from_prog_fd(bpf_program__fd(skel->progs.tc4));
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ASSERT_NEQ(pid1, pid2, "prog_ids_1_2");
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ASSERT_NEQ(pid3, pid4, "prog_ids_3_4");
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ASSERT_NEQ(pid2, pid3, "prog_ids_2_3");
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assert_mprog_count(target, 0);
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link = bpf_program__attach_tcx(skel->progs.tc1, ifindex, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc1 = link;
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assert_mprog_count_ifindex(ifindex, target, 1);
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link = bpf_program__attach_tcx(skel->progs.tc2, ifindex, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc2 = link;
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assert_mprog_count_ifindex(ifindex, target, 2);
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link = bpf_program__attach_tcx(skel->progs.tc3, ifindex, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc3 = link;
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assert_mprog_count_ifindex(ifindex, target, 3);
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link = bpf_program__attach_tcx(skel->progs.tc4, ifindex, &optl);
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if (!ASSERT_OK_PTR(link, "link_attach"))
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goto cleanup;
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skel->links.tc4 = link;
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assert_mprog_count_ifindex(ifindex, target, 4);
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tc_hook.ifindex = ifindex;
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tc_hook.attach_point = target == BPF_TCX_INGRESS ?
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BPF_TC_INGRESS : BPF_TC_EGRESS;
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err = bpf_tc_hook_create(&tc_hook);
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err = err == -EEXIST ? 0 : err;
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if (!ASSERT_OK(err, "bpf_tc_hook_create"))
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goto cleanup;
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tc_opts.prog_fd = bpf_program__fd(skel->progs.tc5);
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err = bpf_tc_attach(&tc_hook, &tc_opts);
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if (!ASSERT_OK(err, "bpf_tc_attach"))
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goto cleanup;
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ASSERT_OK(system("ip link del dev tcx_opts1"), "del veth");
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ASSERT_EQ(if_nametoindex("tcx_opts1"), 0, "dev1_removed");
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ASSERT_EQ(if_nametoindex("tcx_opts2"), 0, "dev2_removed");
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ASSERT_EQ(ifindex_from_link_fd(bpf_link__fd(skel->links.tc1)), 0, "tc1_ifindex");
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ASSERT_EQ(ifindex_from_link_fd(bpf_link__fd(skel->links.tc2)), 0, "tc2_ifindex");
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ASSERT_EQ(ifindex_from_link_fd(bpf_link__fd(skel->links.tc3)), 0, "tc3_ifindex");
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ASSERT_EQ(ifindex_from_link_fd(bpf_link__fd(skel->links.tc4)), 0, "tc4_ifindex");
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test_tc_link__destroy(skel);
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return;
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cleanup:
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test_tc_link__destroy(skel);
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ASSERT_OK(system("ip link del dev tcx_opts1"), "del veth");
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ASSERT_EQ(if_nametoindex("tcx_opts1"), 0, "dev1_removed");
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ASSERT_EQ(if_nametoindex("tcx_opts2"), 0, "dev2_removed");
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}
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void serial_test_tc_links_dev_mixed(void)
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{
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test_tc_links_dev_mixed(BPF_TCX_INGRESS);
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test_tc_links_dev_mixed(BPF_TCX_EGRESS);
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}
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@ -2268,3 +2268,113 @@ void serial_test_tc_opts_delete_empty(void)
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test_tc_opts_delete_empty(BPF_TCX_INGRESS, true);
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test_tc_opts_delete_empty(BPF_TCX_EGRESS, true);
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}
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static void test_tc_chain_mixed(int target)
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{
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LIBBPF_OPTS(bpf_tc_opts, tc_opts, .handle = 1, .priority = 1);
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LIBBPF_OPTS(bpf_tc_hook, tc_hook, .ifindex = loopback);
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LIBBPF_OPTS(bpf_prog_attach_opts, opta);
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LIBBPF_OPTS(bpf_prog_detach_opts, optd);
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__u32 fd1, fd2, fd3, id1, id2, id3;
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struct test_tc_link *skel;
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int err, detach_fd;
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skel = test_tc_link__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel_load"))
|
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goto cleanup;
|
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|
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fd1 = bpf_program__fd(skel->progs.tc4);
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fd2 = bpf_program__fd(skel->progs.tc5);
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fd3 = bpf_program__fd(skel->progs.tc6);
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|
||||
id1 = id_from_prog_fd(fd1);
|
||||
id2 = id_from_prog_fd(fd2);
|
||||
id3 = id_from_prog_fd(fd3);
|
||||
|
||||
ASSERT_NEQ(id1, id2, "prog_ids_1_2");
|
||||
ASSERT_NEQ(id2, id3, "prog_ids_2_3");
|
||||
|
||||
assert_mprog_count(target, 0);
|
||||
|
||||
tc_hook.attach_point = target == BPF_TCX_INGRESS ?
|
||||
BPF_TC_INGRESS : BPF_TC_EGRESS;
|
||||
err = bpf_tc_hook_create(&tc_hook);
|
||||
err = err == -EEXIST ? 0 : err;
|
||||
if (!ASSERT_OK(err, "bpf_tc_hook_create"))
|
||||
goto cleanup;
|
||||
|
||||
tc_opts.prog_fd = fd2;
|
||||
err = bpf_tc_attach(&tc_hook, &tc_opts);
|
||||
if (!ASSERT_OK(err, "bpf_tc_attach"))
|
||||
goto cleanup_hook;
|
||||
|
||||
err = bpf_prog_attach_opts(fd3, loopback, target, &opta);
|
||||
if (!ASSERT_EQ(err, 0, "prog_attach"))
|
||||
goto cleanup_filter;
|
||||
|
||||
detach_fd = fd3;
|
||||
|
||||
assert_mprog_count(target, 1);
|
||||
|
||||
ASSERT_OK(system(ping_cmd), ping_cmd);
|
||||
|
||||
ASSERT_EQ(skel->bss->seen_tc4, false, "seen_tc4");
|
||||
ASSERT_EQ(skel->bss->seen_tc5, false, "seen_tc5");
|
||||
ASSERT_EQ(skel->bss->seen_tc6, true, "seen_tc6");
|
||||
|
||||
skel->bss->seen_tc4 = false;
|
||||
skel->bss->seen_tc5 = false;
|
||||
skel->bss->seen_tc6 = false;
|
||||
|
||||
LIBBPF_OPTS_RESET(opta,
|
||||
.flags = BPF_F_REPLACE,
|
||||
.replace_prog_fd = fd3,
|
||||
);
|
||||
|
||||
err = bpf_prog_attach_opts(fd1, loopback, target, &opta);
|
||||
if (!ASSERT_EQ(err, 0, "prog_attach"))
|
||||
goto cleanup_opts;
|
||||
|
||||
detach_fd = fd1;
|
||||
|
||||
assert_mprog_count(target, 1);
|
||||
|
||||
ASSERT_OK(system(ping_cmd), ping_cmd);
|
||||
|
||||
ASSERT_EQ(skel->bss->seen_tc4, true, "seen_tc4");
|
||||
ASSERT_EQ(skel->bss->seen_tc5, true, "seen_tc5");
|
||||
ASSERT_EQ(skel->bss->seen_tc6, false, "seen_tc6");
|
||||
|
||||
skel->bss->seen_tc4 = false;
|
||||
skel->bss->seen_tc5 = false;
|
||||
skel->bss->seen_tc6 = false;
|
||||
|
||||
cleanup_opts:
|
||||
err = bpf_prog_detach_opts(detach_fd, loopback, target, &optd);
|
||||
ASSERT_OK(err, "prog_detach");
|
||||
__assert_mprog_count(target, 0, true, loopback);
|
||||
|
||||
ASSERT_OK(system(ping_cmd), ping_cmd);
|
||||
|
||||
ASSERT_EQ(skel->bss->seen_tc4, false, "seen_tc4");
|
||||
ASSERT_EQ(skel->bss->seen_tc5, true, "seen_tc5");
|
||||
ASSERT_EQ(skel->bss->seen_tc6, false, "seen_tc6");
|
||||
|
||||
cleanup_filter:
|
||||
tc_opts.flags = tc_opts.prog_fd = tc_opts.prog_id = 0;
|
||||
err = bpf_tc_detach(&tc_hook, &tc_opts);
|
||||
ASSERT_OK(err, "bpf_tc_detach");
|
||||
|
||||
cleanup_hook:
|
||||
tc_hook.attach_point = BPF_TC_INGRESS | BPF_TC_EGRESS;
|
||||
bpf_tc_hook_destroy(&tc_hook);
|
||||
|
||||
cleanup:
|
||||
test_tc_link__destroy(skel);
|
||||
}
|
||||
|
||||
void serial_test_tc_opts_chain_mixed(void)
|
||||
{
|
||||
test_tc_chain_mixed(BPF_TCX_INGRESS);
|
||||
test_tc_chain_mixed(BPF_TCX_EGRESS);
|
||||
}
|
||||
|
||||
@ -10,6 +10,8 @@ bool seen_tc1;
|
||||
bool seen_tc2;
|
||||
bool seen_tc3;
|
||||
bool seen_tc4;
|
||||
bool seen_tc5;
|
||||
bool seen_tc6;
|
||||
|
||||
SEC("tc/ingress")
|
||||
int tc1(struct __sk_buff *skb)
|
||||
@ -38,3 +40,17 @@ int tc4(struct __sk_buff *skb)
|
||||
seen_tc4 = true;
|
||||
return TCX_NEXT;
|
||||
}
|
||||
|
||||
SEC("tc/egress")
|
||||
int tc5(struct __sk_buff *skb)
|
||||
{
|
||||
seen_tc5 = true;
|
||||
return TCX_PASS;
|
||||
}
|
||||
|
||||
SEC("tc/egress")
|
||||
int tc6(struct __sk_buff *skb)
|
||||
{
|
||||
seen_tc6 = true;
|
||||
return TCX_PASS;
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user