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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2023 Meta Platforms, Inc. and affiliates.
*/
#include "e2e.h"
#include <linux/pkt_cls.h>
#include "bpfilter.h"
#include "opts.h"
#include "core/bpf.h"
#include "core/chain.h"
#include "core/flavor.h"
#include "core/logger.h"
#include "harness/daemon.h"
#include "harness/test.h"
static struct {
enum bf_hook hook;
int verdicts[2];
} _bf_tests_meta[_BF_FLAVOR_MAX] = {
[BF_FLAVOR_TC] = {
.hook = BF_HOOK_TC_EGRESS,
.verdicts = {
[BF_VERDICT_ACCEPT] = TC_ACT_OK,
[BF_VERDICT_DROP] = TC_ACT_SHOT,
},
},
[BF_FLAVOR_NF] = {
.hook = BF_HOOK_NF_POST_ROUTING,
.verdicts = {
[BF_VERDICT_ACCEPT] = NF_ACCEPT,
[BF_VERDICT_DROP] = NF_DROP,
},
},
[BF_FLAVOR_XDP] = {
.hook = BF_HOOK_XDP,
.verdicts = {
[BF_VERDICT_ACCEPT] = XDP_PASS,
[BF_VERDICT_DROP] = XDP_DROP,
},
},
[BF_FLAVOR_CGROUP] = {
.hook = BF_HOOK_CGROUP_INGRESS,
.verdicts = {
[BF_VERDICT_ACCEPT] = SK_PASS,
[BF_VERDICT_DROP] = SK_DROP,
},
},
};
static int _bft_e2e_test_with_counter(struct bf_chain *chain,
enum bf_verdict expect,
const struct bft_prog_run_args *args,
const struct bft_counter *counter)
{
_clean_bf_test_daemon_ struct bf_test_daemon daemon = bft_daemon_default();
bool success = true, daemon_failure = false;
int r;
bf_assert(chain && args);
r = bf_test_daemon_init(&daemon, bft_e2e_bpfilter_path(),
BF_TEST_DAEMON_TRANSIENT |
BF_TEST_DAEMON_NO_IPTABLES |
BF_TEST_DAEMON_NO_NFTABLES);
if (r < 0)
return bf_err_r(r, "failed to create the bpfilter daemon");
r = bf_test_daemon_start(&daemon);
if (r < 0)
return bf_err_r(r, "failed to start the bpfilter daemon");
for (enum bf_flavor flavor = 0; flavor < _BF_FLAVOR_MAX; ++flavor) {
_free_bf_test_prog_ struct bf_test_prog *prog = NULL;
const struct bft_prog_run_args *arg = &args[flavor];
_clean_bf_list_ bf_list counters = bf_list_default(bf_counter_free, NULL);
_free_bf_chain_ struct bf_chain *_0 = NULL;
_free_bf_hookopts_ struct bf_hookopts *_1 = NULL;
int test_ret;
chain->hook = _bf_tests_meta[flavor].hook;
prog = bf_test_prog_get(chain);
if (!prog) {
bf_err("failed to get the test program");
daemon_failure = true;
break;
}
test_ret = bf_prog_run(prog->fd, arg->pkt, arg->pkt_len,
arg->ctx_len ? &arg->ctx : NULL, arg->ctx_len);
if (test_ret < 0) {
bf_err_r(test_ret, "failed to run the program");
daemon_failure = true;
break;
}
r = bf_chain_get(chain->name, &_0, &_1, &counters);
if (r) {
bf_info("failed to retrieve chain 'bf_test'");
daemon_failure = true;
break;
}
bf_ruleset_flush();
if (_bf_tests_meta[flavor].verdicts[expect] != test_ret) {
print_error("%sERROR: %s: BPF_PROG_RUN returned %d, expecting %d\n",
" ", bf_flavor_to_str(flavor), test_ret,
_bf_tests_meta[flavor].verdicts[expect]);
success = false;
}
if (counter) {
const struct bf_counter *ref = &counter->counter;
const struct bf_counter *test;
test = bf_list_get_at(&counters, counter->index);
if (!test) {
print_error("%sERROR: %s: missing counters for index %lu\n",
" ",
bf_flavor_to_str(flavor), counter->index);
success = false;
}
if (test && ref->packets != BFT_NO_PKTS && ref->packets != test->packets) {
print_error("%sERROR: %s: rule #%lu: expecting %lu packets, got %lu\n",
" ", bf_flavor_to_str(flavor),
counter->index, ref->packets, test->packets);
success = false;
}
if (test && ref->bytes != BFT_NO_BYTES && ref->bytes != test->bytes) {
print_error("%sERROR: %s: rule #%lu: expecting %lu bytes, got %lu\n",
" ", bf_flavor_to_str(flavor),
counter->index, ref->bytes, test->bytes);
success = false;
}
}
}
r = bf_test_daemon_stop(&daemon);
if (r < 0)
return bf_err_r(r, "failed to stop the bpfilter daemon");
if (daemon_failure) {
_cleanup_free_ const char *err = bf_test_process_stderr(&daemon.process);
bf_info("stderr:\n%s", err);
fail();
}
if (!success)
fail();
return 0;
}
int bft_e2e_test_with_counter(struct bf_chain *chain, enum bf_verdict expect,
const struct bft_prog_run_args *args, const struct bft_counter *counter)
{
return _bft_e2e_test_with_counter(chain, expect, args, counter);
}
int bft_e2e_test(struct bf_chain *chain, enum bf_verdict expect,
const struct bft_prog_run_args *args)
{
return _bft_e2e_test_with_counter(chain, expect, args, NULL);
}
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