91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
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#include <test_progs.h>
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#include <sys/mman.h>
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#include <network_helpers.h>
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#include <sys/user.h>
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#ifndef PAGE_SIZE /* on some archs it comes in sys/user.h */
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#include <unistd.h>
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#define PAGE_SIZE getpagesize()
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#endif
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#include "arena_htab_asm.skel.h"
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#include "arena_htab.skel.h"
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#include "bpf_arena_htab.h"
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static void test_arena_htab_common(struct htab *htab)
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{
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int i;
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printf("htab %p buckets %p n_buckets %d\n", htab, htab->buckets, htab->n_buckets);
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ASSERT_OK_PTR(htab->buckets, "htab->buckets shouldn't be NULL");
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for (i = 0; htab->buckets && i < 16; i += 4) {
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/*
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* Walk htab buckets and link lists since all pointers are correct,
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* though they were written by bpf program.
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*/
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int val = htab_lookup_elem(htab, i);
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ASSERT_EQ(i, val, "key == value");
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}
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}
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static void test_arena_htab_llvm(void)
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{
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LIBBPF_OPTS(bpf_test_run_opts, opts);
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struct arena_htab *skel;
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struct htab *htab;
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size_t arena_sz;
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void *area;
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int ret;
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skel = arena_htab__open_and_load();
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if (!ASSERT_OK_PTR(skel, "arena_htab__open_and_load"))
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return;
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area = bpf_map__initial_value(skel->maps.arena, &arena_sz);
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/* fault-in a page with pgoff == 0 as sanity check */
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*(volatile int *)area = 0x55aa;
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/* bpf prog will allocate more pages */
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ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.arena_htab_llvm), &opts);
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ASSERT_OK(ret, "ret");
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ASSERT_OK(opts.retval, "retval");
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if (skel->bss->skip) {
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printf("%s:SKIP:compiler doesn't support arena_cast\n", __func__);
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test__skip();
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goto out;
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}
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htab = skel->bss->htab_for_user;
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test_arena_htab_common(htab);
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out:
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arena_htab__destroy(skel);
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}
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static void test_arena_htab_asm(void)
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{
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LIBBPF_OPTS(bpf_test_run_opts, opts);
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struct arena_htab_asm *skel;
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struct htab *htab;
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int ret;
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skel = arena_htab_asm__open_and_load();
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if (!ASSERT_OK_PTR(skel, "arena_htab_asm__open_and_load"))
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return;
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ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.arena_htab_asm), &opts);
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ASSERT_OK(ret, "ret");
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ASSERT_OK(opts.retval, "retval");
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htab = skel->bss->htab_for_user;
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test_arena_htab_common(htab);
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arena_htab_asm__destroy(skel);
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}
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void test_arena_htab(void)
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{
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if (test__start_subtest("arena_htab_llvm"))
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test_arena_htab_llvm();
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if (test__start_subtest("arena_htab_asm"))
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test_arena_htab_asm();
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}
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