1741 lines
45 KiB
C
1741 lines
45 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Testsuite for eBPF maps
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*
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* Copyright (c) 2014 PLUMgrid, http://plumgrid.com
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* Copyright (c) 2016 Facebook
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/wait.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <linux/bpf.h>
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#include <bpf/bpf.h>
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#include <bpf/libbpf.h>
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#include "bpf_util.h"
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#include "bpf_rlimit.h"
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#include "test_maps.h"
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#ifndef ENOTSUPP
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#define ENOTSUPP 524
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#endif
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static int skips;
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static int map_flags;
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static void test_hashmap(unsigned int task, void *data)
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{
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long long key, next_key, first_key, value;
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int fd;
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fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(key), sizeof(value),
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2, map_flags);
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if (fd < 0) {
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printf("Failed to create hashmap '%s'!\n", strerror(errno));
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exit(1);
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}
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key = 1;
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value = 1234;
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/* Insert key=1 element. */
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assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
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value = 0;
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/* BPF_NOEXIST means add new element if it doesn't exist. */
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assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
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/* key=1 already exists. */
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errno == EEXIST);
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/* -1 is an invalid flag. */
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assert(bpf_map_update_elem(fd, &key, &value, -1) == -1 &&
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errno == EINVAL);
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/* Check that key=1 can be found. */
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assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 1234);
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key = 2;
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/* Check that key=2 is not found. */
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assert(bpf_map_lookup_elem(fd, &key, &value) == -1 && errno == ENOENT);
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/* BPF_EXIST means update existing element. */
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assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) == -1 &&
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/* key=2 is not there. */
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errno == ENOENT);
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/* Insert key=2 element. */
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assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == 0);
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/* key=1 and key=2 were inserted, check that key=0 cannot be
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* inserted due to max_entries limit.
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*/
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key = 0;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
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errno == E2BIG);
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/* Update existing element, though the map is full. */
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key = 1;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) == 0);
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key = 2;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
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key = 3;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
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errno == E2BIG);
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/* Check that key = 0 doesn't exist. */
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key = 0;
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assert(bpf_map_delete_elem(fd, &key) == -1 && errno == ENOENT);
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/* Iterate over two elements. */
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assert(bpf_map_get_next_key(fd, NULL, &first_key) == 0 &&
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(first_key == 1 || first_key == 2));
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assert(bpf_map_get_next_key(fd, &key, &next_key) == 0 &&
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(next_key == first_key));
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assert(bpf_map_get_next_key(fd, &next_key, &next_key) == 0 &&
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(next_key == 1 || next_key == 2) &&
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(next_key != first_key));
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assert(bpf_map_get_next_key(fd, &next_key, &next_key) == -1 &&
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errno == ENOENT);
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/* Delete both elements. */
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key = 1;
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assert(bpf_map_delete_elem(fd, &key) == 0);
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key = 2;
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assert(bpf_map_delete_elem(fd, &key) == 0);
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assert(bpf_map_delete_elem(fd, &key) == -1 && errno == ENOENT);
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key = 0;
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/* Check that map is empty. */
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assert(bpf_map_get_next_key(fd, NULL, &next_key) == -1 &&
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errno == ENOENT);
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assert(bpf_map_get_next_key(fd, &key, &next_key) == -1 &&
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errno == ENOENT);
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close(fd);
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}
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static void test_hashmap_sizes(unsigned int task, void *data)
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{
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int fd, i, j;
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for (i = 1; i <= 512; i <<= 1)
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for (j = 1; j <= 1 << 18; j <<= 1) {
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fd = bpf_create_map(BPF_MAP_TYPE_HASH, i, j,
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2, map_flags);
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if (fd < 0) {
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if (errno == ENOMEM)
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return;
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printf("Failed to create hashmap key=%d value=%d '%s'\n",
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i, j, strerror(errno));
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exit(1);
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}
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close(fd);
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usleep(10); /* give kernel time to destroy */
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}
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}
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static void test_hashmap_percpu(unsigned int task, void *data)
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{
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unsigned int nr_cpus = bpf_num_possible_cpus();
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BPF_DECLARE_PERCPU(long, value);
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long long key, next_key, first_key;
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int expected_key_mask = 0;
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int fd, i;
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fd = bpf_create_map(BPF_MAP_TYPE_PERCPU_HASH, sizeof(key),
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sizeof(bpf_percpu(value, 0)), 2, map_flags);
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if (fd < 0) {
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printf("Failed to create hashmap '%s'!\n", strerror(errno));
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exit(1);
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}
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for (i = 0; i < nr_cpus; i++)
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bpf_percpu(value, i) = i + 100;
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key = 1;
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/* Insert key=1 element. */
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assert(!(expected_key_mask & key));
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assert(bpf_map_update_elem(fd, &key, value, BPF_ANY) == 0);
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expected_key_mask |= key;
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/* BPF_NOEXIST means add new element if it doesn't exist. */
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assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == -1 &&
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/* key=1 already exists. */
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errno == EEXIST);
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/* -1 is an invalid flag. */
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assert(bpf_map_update_elem(fd, &key, value, -1) == -1 &&
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errno == EINVAL);
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/* Check that key=1 can be found. Value could be 0 if the lookup
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* was run from a different CPU.
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*/
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bpf_percpu(value, 0) = 1;
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assert(bpf_map_lookup_elem(fd, &key, value) == 0 &&
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bpf_percpu(value, 0) == 100);
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key = 2;
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/* Check that key=2 is not found. */
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assert(bpf_map_lookup_elem(fd, &key, value) == -1 && errno == ENOENT);
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/* BPF_EXIST means update existing element. */
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assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) == -1 &&
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/* key=2 is not there. */
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errno == ENOENT);
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/* Insert key=2 element. */
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assert(!(expected_key_mask & key));
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assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == 0);
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expected_key_mask |= key;
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/* key=1 and key=2 were inserted, check that key=0 cannot be
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* inserted due to max_entries limit.
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*/
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key = 0;
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assert(bpf_map_update_elem(fd, &key, value, BPF_NOEXIST) == -1 &&
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errno == E2BIG);
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/* Check that key = 0 doesn't exist. */
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assert(bpf_map_delete_elem(fd, &key) == -1 && errno == ENOENT);
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/* Iterate over two elements. */
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assert(bpf_map_get_next_key(fd, NULL, &first_key) == 0 &&
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((expected_key_mask & first_key) == first_key));
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while (!bpf_map_get_next_key(fd, &key, &next_key)) {
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if (first_key) {
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assert(next_key == first_key);
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first_key = 0;
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}
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assert((expected_key_mask & next_key) == next_key);
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expected_key_mask &= ~next_key;
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assert(bpf_map_lookup_elem(fd, &next_key, value) == 0);
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for (i = 0; i < nr_cpus; i++)
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assert(bpf_percpu(value, i) == i + 100);
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key = next_key;
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}
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assert(errno == ENOENT);
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/* Update with BPF_EXIST. */
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key = 1;
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assert(bpf_map_update_elem(fd, &key, value, BPF_EXIST) == 0);
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/* Delete both elements. */
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key = 1;
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assert(bpf_map_delete_elem(fd, &key) == 0);
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key = 2;
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assert(bpf_map_delete_elem(fd, &key) == 0);
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assert(bpf_map_delete_elem(fd, &key) == -1 && errno == ENOENT);
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key = 0;
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/* Check that map is empty. */
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assert(bpf_map_get_next_key(fd, NULL, &next_key) == -1 &&
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errno == ENOENT);
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assert(bpf_map_get_next_key(fd, &key, &next_key) == -1 &&
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errno == ENOENT);
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close(fd);
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}
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static int helper_fill_hashmap(int max_entries)
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{
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int i, fd, ret;
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long long key, value;
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fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(key), sizeof(value),
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max_entries, map_flags);
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CHECK(fd < 0,
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"failed to create hashmap",
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"err: %s, flags: 0x%x\n", strerror(errno), map_flags);
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for (i = 0; i < max_entries; i++) {
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key = i; value = key;
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ret = bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST);
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CHECK(ret != 0,
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"can't update hashmap",
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"err: %s\n", strerror(ret));
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}
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return fd;
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}
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static void test_hashmap_walk(unsigned int task, void *data)
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{
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int fd, i, max_entries = 1000;
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long long key, value, next_key;
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bool next_key_valid = true;
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fd = helper_fill_hashmap(max_entries);
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for (i = 0; bpf_map_get_next_key(fd, !i ? NULL : &key,
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&next_key) == 0; i++) {
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key = next_key;
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assert(bpf_map_lookup_elem(fd, &key, &value) == 0);
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}
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assert(i == max_entries);
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assert(bpf_map_get_next_key(fd, NULL, &key) == 0);
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for (i = 0; next_key_valid; i++) {
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next_key_valid = bpf_map_get_next_key(fd, &key, &next_key) == 0;
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assert(bpf_map_lookup_elem(fd, &key, &value) == 0);
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value++;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) == 0);
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key = next_key;
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}
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assert(i == max_entries);
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for (i = 0; bpf_map_get_next_key(fd, !i ? NULL : &key,
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&next_key) == 0; i++) {
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key = next_key;
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assert(bpf_map_lookup_elem(fd, &key, &value) == 0);
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assert(value - 1 == key);
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}
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assert(i == max_entries);
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close(fd);
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}
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static void test_hashmap_zero_seed(void)
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{
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int i, first, second, old_flags;
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long long key, next_first, next_second;
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old_flags = map_flags;
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map_flags |= BPF_F_ZERO_SEED;
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first = helper_fill_hashmap(3);
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second = helper_fill_hashmap(3);
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for (i = 0; ; i++) {
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void *key_ptr = !i ? NULL : &key;
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if (bpf_map_get_next_key(first, key_ptr, &next_first) != 0)
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break;
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CHECK(bpf_map_get_next_key(second, key_ptr, &next_second) != 0,
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"next_key for second map must succeed",
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"key_ptr: %p", key_ptr);
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CHECK(next_first != next_second,
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"keys must match",
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"i: %d first: %lld second: %lld\n", i,
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next_first, next_second);
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key = next_first;
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}
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map_flags = old_flags;
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close(first);
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close(second);
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}
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static void test_arraymap(unsigned int task, void *data)
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{
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int key, next_key, fd;
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long long value;
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fd = bpf_create_map(BPF_MAP_TYPE_ARRAY, sizeof(key), sizeof(value),
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2, 0);
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if (fd < 0) {
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printf("Failed to create arraymap '%s'!\n", strerror(errno));
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exit(1);
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}
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key = 1;
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value = 1234;
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/* Insert key=1 element. */
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assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
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value = 0;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
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errno == EEXIST);
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/* Check that key=1 can be found. */
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assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 1234);
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key = 0;
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/* Check that key=0 is also found and zero initialized. */
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assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 0);
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/* key=0 and key=1 were inserted, check that key=2 cannot be inserted
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* due to max_entries limit.
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*/
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key = 2;
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assert(bpf_map_update_elem(fd, &key, &value, BPF_EXIST) == -1 &&
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errno == E2BIG);
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/* Check that key = 2 doesn't exist. */
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assert(bpf_map_lookup_elem(fd, &key, &value) == -1 && errno == ENOENT);
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/* Iterate over two elements. */
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assert(bpf_map_get_next_key(fd, NULL, &next_key) == 0 &&
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next_key == 0);
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assert(bpf_map_get_next_key(fd, &key, &next_key) == 0 &&
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next_key == 0);
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assert(bpf_map_get_next_key(fd, &next_key, &next_key) == 0 &&
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next_key == 1);
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assert(bpf_map_get_next_key(fd, &next_key, &next_key) == -1 &&
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errno == ENOENT);
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/* Delete shouldn't succeed. */
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key = 1;
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assert(bpf_map_delete_elem(fd, &key) == -1 && errno == EINVAL);
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close(fd);
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}
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static void test_arraymap_percpu(unsigned int task, void *data)
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{
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unsigned int nr_cpus = bpf_num_possible_cpus();
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BPF_DECLARE_PERCPU(long, values);
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int key, next_key, fd, i;
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fd = bpf_create_map(BPF_MAP_TYPE_PERCPU_ARRAY, sizeof(key),
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sizeof(bpf_percpu(values, 0)), 2, 0);
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if (fd < 0) {
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printf("Failed to create arraymap '%s'!\n", strerror(errno));
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exit(1);
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}
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for (i = 0; i < nr_cpus; i++)
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bpf_percpu(values, i) = i + 100;
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key = 1;
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/* Insert key=1 element. */
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assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0);
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bpf_percpu(values, 0) = 0;
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assert(bpf_map_update_elem(fd, &key, values, BPF_NOEXIST) == -1 &&
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errno == EEXIST);
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/* Check that key=1 can be found. */
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assert(bpf_map_lookup_elem(fd, &key, values) == 0 &&
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bpf_percpu(values, 0) == 100);
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key = 0;
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/* Check that key=0 is also found and zero initialized. */
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assert(bpf_map_lookup_elem(fd, &key, values) == 0 &&
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bpf_percpu(values, 0) == 0 &&
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bpf_percpu(values, nr_cpus - 1) == 0);
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/* Check that key=2 cannot be inserted due to max_entries limit. */
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key = 2;
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assert(bpf_map_update_elem(fd, &key, values, BPF_EXIST) == -1 &&
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errno == E2BIG);
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/* Check that key = 2 doesn't exist. */
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assert(bpf_map_lookup_elem(fd, &key, values) == -1 && errno == ENOENT);
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/* Iterate over two elements. */
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assert(bpf_map_get_next_key(fd, NULL, &next_key) == 0 &&
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next_key == 0);
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assert(bpf_map_get_next_key(fd, &key, &next_key) == 0 &&
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next_key == 0);
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assert(bpf_map_get_next_key(fd, &next_key, &next_key) == 0 &&
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next_key == 1);
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assert(bpf_map_get_next_key(fd, &next_key, &next_key) == -1 &&
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errno == ENOENT);
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/* Delete shouldn't succeed. */
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key = 1;
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assert(bpf_map_delete_elem(fd, &key) == -1 && errno == EINVAL);
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close(fd);
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}
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static void test_arraymap_percpu_many_keys(void)
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{
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unsigned int nr_cpus = bpf_num_possible_cpus();
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BPF_DECLARE_PERCPU(long, values);
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/* nr_keys is not too large otherwise the test stresses percpu
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* allocator more than anything else
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*/
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unsigned int nr_keys = 2000;
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int key, fd, i;
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fd = bpf_create_map(BPF_MAP_TYPE_PERCPU_ARRAY, sizeof(key),
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sizeof(bpf_percpu(values, 0)), nr_keys, 0);
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if (fd < 0) {
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printf("Failed to create per-cpu arraymap '%s'!\n",
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strerror(errno));
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exit(1);
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}
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|
|
for (i = 0; i < nr_cpus; i++)
|
|
bpf_percpu(values, i) = i + 10;
|
|
|
|
for (key = 0; key < nr_keys; key++)
|
|
assert(bpf_map_update_elem(fd, &key, values, BPF_ANY) == 0);
|
|
|
|
for (key = 0; key < nr_keys; key++) {
|
|
for (i = 0; i < nr_cpus; i++)
|
|
bpf_percpu(values, i) = 0;
|
|
|
|
assert(bpf_map_lookup_elem(fd, &key, values) == 0);
|
|
|
|
for (i = 0; i < nr_cpus; i++)
|
|
assert(bpf_percpu(values, i) == i + 10);
|
|
}
|
|
|
|
close(fd);
|
|
}
|
|
|
|
static void test_devmap(unsigned int task, void *data)
|
|
{
|
|
int fd;
|
|
__u32 key, value;
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_DEVMAP, sizeof(key), sizeof(value),
|
|
2, 0);
|
|
if (fd < 0) {
|
|
printf("Failed to create devmap '%s'!\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
close(fd);
|
|
}
|
|
|
|
static void test_devmap_hash(unsigned int task, void *data)
|
|
{
|
|
int fd;
|
|
__u32 key, value;
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_DEVMAP_HASH, sizeof(key), sizeof(value),
|
|
2, 0);
|
|
if (fd < 0) {
|
|
printf("Failed to create devmap_hash '%s'!\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
close(fd);
|
|
}
|
|
|
|
static void test_queuemap(unsigned int task, void *data)
|
|
{
|
|
const int MAP_SIZE = 32;
|
|
__u32 vals[MAP_SIZE + MAP_SIZE/2], val;
|
|
int fd, i;
|
|
|
|
/* Fill test values to be used */
|
|
for (i = 0; i < MAP_SIZE + MAP_SIZE/2; i++)
|
|
vals[i] = rand();
|
|
|
|
/* Invalid key size */
|
|
fd = bpf_create_map(BPF_MAP_TYPE_QUEUE, 4, sizeof(val), MAP_SIZE,
|
|
map_flags);
|
|
assert(fd < 0 && errno == EINVAL);
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_QUEUE, 0, sizeof(val), MAP_SIZE,
|
|
map_flags);
|
|
/* Queue map does not support BPF_F_NO_PREALLOC */
|
|
if (map_flags & BPF_F_NO_PREALLOC) {
|
|
assert(fd < 0 && errno == EINVAL);
|
|
return;
|
|
}
|
|
if (fd < 0) {
|
|
printf("Failed to create queuemap '%s'!\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
/* Push MAP_SIZE elements */
|
|
for (i = 0; i < MAP_SIZE; i++)
|
|
assert(bpf_map_update_elem(fd, NULL, &vals[i], 0) == 0);
|
|
|
|
/* Check that element cannot be pushed due to max_entries limit */
|
|
assert(bpf_map_update_elem(fd, NULL, &val, 0) == -1 &&
|
|
errno == E2BIG);
|
|
|
|
/* Peek element */
|
|
assert(bpf_map_lookup_elem(fd, NULL, &val) == 0 && val == vals[0]);
|
|
|
|
/* Replace half elements */
|
|
for (i = MAP_SIZE; i < MAP_SIZE + MAP_SIZE/2; i++)
|
|
assert(bpf_map_update_elem(fd, NULL, &vals[i], BPF_EXIST) == 0);
|
|
|
|
/* Pop all elements */
|
|
for (i = MAP_SIZE/2; i < MAP_SIZE + MAP_SIZE/2; i++)
|
|
assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) == 0 &&
|
|
val == vals[i]);
|
|
|
|
/* Check that there are not elements left */
|
|
assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) == -1 &&
|
|
errno == ENOENT);
|
|
|
|
/* Check that non supported functions set errno to EINVAL */
|
|
assert(bpf_map_delete_elem(fd, NULL) == -1 && errno == EINVAL);
|
|
assert(bpf_map_get_next_key(fd, NULL, NULL) == -1 && errno == EINVAL);
|
|
|
|
close(fd);
|
|
}
|
|
|
|
static void test_stackmap(unsigned int task, void *data)
|
|
{
|
|
const int MAP_SIZE = 32;
|
|
__u32 vals[MAP_SIZE + MAP_SIZE/2], val;
|
|
int fd, i;
|
|
|
|
/* Fill test values to be used */
|
|
for (i = 0; i < MAP_SIZE + MAP_SIZE/2; i++)
|
|
vals[i] = rand();
|
|
|
|
/* Invalid key size */
|
|
fd = bpf_create_map(BPF_MAP_TYPE_STACK, 4, sizeof(val), MAP_SIZE,
|
|
map_flags);
|
|
assert(fd < 0 && errno == EINVAL);
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_STACK, 0, sizeof(val), MAP_SIZE,
|
|
map_flags);
|
|
/* Stack map does not support BPF_F_NO_PREALLOC */
|
|
if (map_flags & BPF_F_NO_PREALLOC) {
|
|
assert(fd < 0 && errno == EINVAL);
|
|
return;
|
|
}
|
|
if (fd < 0) {
|
|
printf("Failed to create stackmap '%s'!\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
/* Push MAP_SIZE elements */
|
|
for (i = 0; i < MAP_SIZE; i++)
|
|
assert(bpf_map_update_elem(fd, NULL, &vals[i], 0) == 0);
|
|
|
|
/* Check that element cannot be pushed due to max_entries limit */
|
|
assert(bpf_map_update_elem(fd, NULL, &val, 0) == -1 &&
|
|
errno == E2BIG);
|
|
|
|
/* Peek element */
|
|
assert(bpf_map_lookup_elem(fd, NULL, &val) == 0 && val == vals[i - 1]);
|
|
|
|
/* Replace half elements */
|
|
for (i = MAP_SIZE; i < MAP_SIZE + MAP_SIZE/2; i++)
|
|
assert(bpf_map_update_elem(fd, NULL, &vals[i], BPF_EXIST) == 0);
|
|
|
|
/* Pop all elements */
|
|
for (i = MAP_SIZE + MAP_SIZE/2 - 1; i >= MAP_SIZE/2; i--)
|
|
assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) == 0 &&
|
|
val == vals[i]);
|
|
|
|
/* Check that there are not elements left */
|
|
assert(bpf_map_lookup_and_delete_elem(fd, NULL, &val) == -1 &&
|
|
errno == ENOENT);
|
|
|
|
/* Check that non supported functions set errno to EINVAL */
|
|
assert(bpf_map_delete_elem(fd, NULL) == -1 && errno == EINVAL);
|
|
assert(bpf_map_get_next_key(fd, NULL, NULL) == -1 && errno == EINVAL);
|
|
|
|
close(fd);
|
|
}
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <arpa/inet.h>
|
|
#include <sys/select.h>
|
|
#include <linux/err.h>
|
|
#define SOCKMAP_PARSE_PROG "./sockmap_parse_prog.o"
|
|
#define SOCKMAP_VERDICT_PROG "./sockmap_verdict_prog.o"
|
|
#define SOCKMAP_TCP_MSG_PROG "./sockmap_tcp_msg_prog.o"
|
|
static void test_sockmap(unsigned int tasks, void *data)
|
|
{
|
|
struct bpf_map *bpf_map_rx, *bpf_map_tx, *bpf_map_msg, *bpf_map_break;
|
|
int map_fd_msg = 0, map_fd_rx = 0, map_fd_tx = 0, map_fd_break;
|
|
int ports[] = {50200, 50201, 50202, 50204};
|
|
int err, i, fd, udp, sfd[6] = {0xdeadbeef};
|
|
u8 buf[20] = {0x0, 0x5, 0x3, 0x2, 0x1, 0x0};
|
|
int parse_prog, verdict_prog, msg_prog;
|
|
struct sockaddr_in addr;
|
|
int one = 1, s, sc, rc;
|
|
struct bpf_object *obj;
|
|
struct timeval to;
|
|
__u32 key, value;
|
|
pid_t pid[tasks];
|
|
fd_set w;
|
|
|
|
/* Create some sockets to use with sockmap */
|
|
for (i = 0; i < 2; i++) {
|
|
sfd[i] = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (sfd[i] < 0)
|
|
goto out;
|
|
err = setsockopt(sfd[i], SOL_SOCKET, SO_REUSEADDR,
|
|
(char *)&one, sizeof(one));
|
|
if (err) {
|
|
printf("failed to setsockopt\n");
|
|
goto out;
|
|
}
|
|
err = ioctl(sfd[i], FIONBIO, (char *)&one);
|
|
if (err < 0) {
|
|
printf("failed to ioctl\n");
|
|
goto out;
|
|
}
|
|
memset(&addr, 0, sizeof(struct sockaddr_in));
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
|
|
addr.sin_port = htons(ports[i]);
|
|
err = bind(sfd[i], (struct sockaddr *)&addr, sizeof(addr));
|
|
if (err < 0) {
|
|
printf("failed to bind: err %i: %i:%i\n",
|
|
err, i, sfd[i]);
|
|
goto out;
|
|
}
|
|
err = listen(sfd[i], 32);
|
|
if (err < 0) {
|
|
printf("failed to listen\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
for (i = 2; i < 4; i++) {
|
|
sfd[i] = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (sfd[i] < 0)
|
|
goto out;
|
|
err = setsockopt(sfd[i], SOL_SOCKET, SO_REUSEADDR,
|
|
(char *)&one, sizeof(one));
|
|
if (err) {
|
|
printf("set sock opt\n");
|
|
goto out;
|
|
}
|
|
memset(&addr, 0, sizeof(struct sockaddr_in));
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
|
|
addr.sin_port = htons(ports[i - 2]);
|
|
err = connect(sfd[i], (struct sockaddr *)&addr, sizeof(addr));
|
|
if (err) {
|
|
printf("failed to connect\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
|
|
for (i = 4; i < 6; i++) {
|
|
sfd[i] = accept(sfd[i - 4], NULL, NULL);
|
|
if (sfd[i] < 0) {
|
|
printf("accept failed\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* Test sockmap with connected sockets */
|
|
fd = bpf_create_map(BPF_MAP_TYPE_SOCKMAP,
|
|
sizeof(key), sizeof(value),
|
|
6, 0);
|
|
if (fd < 0) {
|
|
if (!bpf_probe_map_type(BPF_MAP_TYPE_SOCKMAP, 0)) {
|
|
printf("%s SKIP (unsupported map type BPF_MAP_TYPE_SOCKMAP)\n",
|
|
__func__);
|
|
skips++;
|
|
for (i = 0; i < 6; i++)
|
|
close(sfd[i]);
|
|
return;
|
|
}
|
|
|
|
printf("Failed to create sockmap %i\n", fd);
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Test update with unsupported UDP socket */
|
|
udp = socket(AF_INET, SOCK_DGRAM, 0);
|
|
i = 0;
|
|
err = bpf_map_update_elem(fd, &i, &udp, BPF_ANY);
|
|
if (!err) {
|
|
printf("Failed socket SOCK_DGRAM allowed '%i:%i'\n",
|
|
i, udp);
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Test update without programs */
|
|
for (i = 0; i < 6; i++) {
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
|
|
if (i < 2 && !err) {
|
|
printf("Allowed update sockmap '%i:%i' not in ESTABLISHED\n",
|
|
i, sfd[i]);
|
|
goto out_sockmap;
|
|
} else if (i >= 2 && err) {
|
|
printf("Failed noprog update sockmap '%i:%i'\n",
|
|
i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
}
|
|
|
|
/* Test attaching/detaching bad fds */
|
|
err = bpf_prog_attach(-1, fd, BPF_SK_SKB_STREAM_PARSER, 0);
|
|
if (!err) {
|
|
printf("Failed invalid parser prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(-1, fd, BPF_SK_SKB_STREAM_VERDICT, 0);
|
|
if (!err) {
|
|
printf("Failed invalid verdict prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(-1, fd, BPF_SK_MSG_VERDICT, 0);
|
|
if (!err) {
|
|
printf("Failed invalid msg verdict prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(-1, fd, __MAX_BPF_ATTACH_TYPE, 0);
|
|
if (!err) {
|
|
printf("Failed unknown prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_detach(fd, BPF_SK_SKB_STREAM_PARSER);
|
|
if (err) {
|
|
printf("Failed empty parser prog detach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_detach(fd, BPF_SK_SKB_STREAM_VERDICT);
|
|
if (err) {
|
|
printf("Failed empty verdict prog detach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_detach(fd, BPF_SK_MSG_VERDICT);
|
|
if (err) {
|
|
printf("Failed empty msg verdict prog detach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_detach(fd, __MAX_BPF_ATTACH_TYPE);
|
|
if (!err) {
|
|
printf("Detach invalid prog successful\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Load SK_SKB program and Attach */
|
|
err = bpf_prog_load(SOCKMAP_PARSE_PROG,
|
|
BPF_PROG_TYPE_SK_SKB, &obj, &parse_prog);
|
|
if (err) {
|
|
printf("Failed to load SK_SKB parse prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_load(SOCKMAP_TCP_MSG_PROG,
|
|
BPF_PROG_TYPE_SK_MSG, &obj, &msg_prog);
|
|
if (err) {
|
|
printf("Failed to load SK_SKB msg prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_load(SOCKMAP_VERDICT_PROG,
|
|
BPF_PROG_TYPE_SK_SKB, &obj, &verdict_prog);
|
|
if (err) {
|
|
printf("Failed to load SK_SKB verdict prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
bpf_map_rx = bpf_object__find_map_by_name(obj, "sock_map_rx");
|
|
if (IS_ERR(bpf_map_rx)) {
|
|
printf("Failed to load map rx from verdict prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
map_fd_rx = bpf_map__fd(bpf_map_rx);
|
|
if (map_fd_rx < 0) {
|
|
printf("Failed to get map rx fd\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
bpf_map_tx = bpf_object__find_map_by_name(obj, "sock_map_tx");
|
|
if (IS_ERR(bpf_map_tx)) {
|
|
printf("Failed to load map tx from verdict prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
map_fd_tx = bpf_map__fd(bpf_map_tx);
|
|
if (map_fd_tx < 0) {
|
|
printf("Failed to get map tx fd\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
bpf_map_msg = bpf_object__find_map_by_name(obj, "sock_map_msg");
|
|
if (IS_ERR(bpf_map_msg)) {
|
|
printf("Failed to load map msg from msg_verdict prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
map_fd_msg = bpf_map__fd(bpf_map_msg);
|
|
if (map_fd_msg < 0) {
|
|
printf("Failed to get map msg fd\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
bpf_map_break = bpf_object__find_map_by_name(obj, "sock_map_break");
|
|
if (IS_ERR(bpf_map_break)) {
|
|
printf("Failed to load map tx from verdict prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
map_fd_break = bpf_map__fd(bpf_map_break);
|
|
if (map_fd_break < 0) {
|
|
printf("Failed to get map tx fd\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(parse_prog, map_fd_break,
|
|
BPF_SK_SKB_STREAM_PARSER, 0);
|
|
if (!err) {
|
|
printf("Allowed attaching SK_SKB program to invalid map\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(parse_prog, map_fd_rx,
|
|
BPF_SK_SKB_STREAM_PARSER, 0);
|
|
if (err) {
|
|
printf("Failed stream parser bpf prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(verdict_prog, map_fd_rx,
|
|
BPF_SK_SKB_STREAM_VERDICT, 0);
|
|
if (err) {
|
|
printf("Failed stream verdict bpf prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(msg_prog, map_fd_msg, BPF_SK_MSG_VERDICT, 0);
|
|
if (err) {
|
|
printf("Failed msg verdict bpf prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_attach(verdict_prog, map_fd_rx,
|
|
__MAX_BPF_ATTACH_TYPE, 0);
|
|
if (!err) {
|
|
printf("Attached unknown bpf prog\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Test map update elem afterwards fd lives in fd and map_fd */
|
|
for (i = 2; i < 6; i++) {
|
|
err = bpf_map_update_elem(map_fd_rx, &i, &sfd[i], BPF_ANY);
|
|
if (err) {
|
|
printf("Failed map_fd_rx update sockmap %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
err = bpf_map_update_elem(map_fd_tx, &i, &sfd[i], BPF_ANY);
|
|
if (err) {
|
|
printf("Failed map_fd_tx update sockmap %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
}
|
|
|
|
/* Test map delete elem and remove send/recv sockets */
|
|
for (i = 2; i < 4; i++) {
|
|
err = bpf_map_delete_elem(map_fd_rx, &i);
|
|
if (err) {
|
|
printf("Failed delete sockmap rx %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
err = bpf_map_delete_elem(map_fd_tx, &i);
|
|
if (err) {
|
|
printf("Failed delete sockmap tx %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
}
|
|
|
|
/* Put sfd[2] (sending fd below) into msg map to test sendmsg bpf */
|
|
i = 0;
|
|
err = bpf_map_update_elem(map_fd_msg, &i, &sfd[2], BPF_ANY);
|
|
if (err) {
|
|
printf("Failed map_fd_msg update sockmap %i\n", err);
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Test map send/recv */
|
|
for (i = 0; i < 2; i++) {
|
|
buf[0] = i;
|
|
buf[1] = 0x5;
|
|
sc = send(sfd[2], buf, 20, 0);
|
|
if (sc < 0) {
|
|
printf("Failed sockmap send\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
FD_ZERO(&w);
|
|
FD_SET(sfd[3], &w);
|
|
to.tv_sec = 1;
|
|
to.tv_usec = 0;
|
|
s = select(sfd[3] + 1, &w, NULL, NULL, &to);
|
|
if (s == -1) {
|
|
perror("Failed sockmap select()");
|
|
goto out_sockmap;
|
|
} else if (!s) {
|
|
printf("Failed sockmap unexpected timeout\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
if (!FD_ISSET(sfd[3], &w)) {
|
|
printf("Failed sockmap select/recv\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
rc = recv(sfd[3], buf, sizeof(buf), 0);
|
|
if (rc < 0) {
|
|
printf("Failed sockmap recv\n");
|
|
goto out_sockmap;
|
|
}
|
|
}
|
|
|
|
/* Negative null entry lookup from datapath should be dropped */
|
|
buf[0] = 1;
|
|
buf[1] = 12;
|
|
sc = send(sfd[2], buf, 20, 0);
|
|
if (sc < 0) {
|
|
printf("Failed sockmap send\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Push fd into same slot */
|
|
i = 2;
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_NOEXIST);
|
|
if (!err) {
|
|
printf("Failed allowed sockmap dup slot BPF_NOEXIST\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
|
|
if (err) {
|
|
printf("Failed sockmap update new slot BPF_ANY\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_EXIST);
|
|
if (err) {
|
|
printf("Failed sockmap update new slot BPF_EXIST\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Delete the elems without programs */
|
|
for (i = 2; i < 6; i++) {
|
|
err = bpf_map_delete_elem(fd, &i);
|
|
if (err) {
|
|
printf("Failed delete sockmap %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
}
|
|
}
|
|
|
|
/* Test having multiple maps open and set with programs on same fds */
|
|
err = bpf_prog_attach(parse_prog, fd,
|
|
BPF_SK_SKB_STREAM_PARSER, 0);
|
|
if (err) {
|
|
printf("Failed fd bpf parse prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
err = bpf_prog_attach(verdict_prog, fd,
|
|
BPF_SK_SKB_STREAM_VERDICT, 0);
|
|
if (err) {
|
|
printf("Failed fd bpf verdict prog attach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
for (i = 4; i < 6; i++) {
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
|
|
if (!err) {
|
|
printf("Failed allowed duplicate programs in update ANY sockmap %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_NOEXIST);
|
|
if (!err) {
|
|
printf("Failed allowed duplicate program in update NOEXIST sockmap %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_EXIST);
|
|
if (!err) {
|
|
printf("Failed allowed duplicate program in update EXIST sockmap %i '%i:%i'\n",
|
|
err, i, sfd[i]);
|
|
goto out_sockmap;
|
|
}
|
|
}
|
|
|
|
/* Test tasks number of forked operations */
|
|
for (i = 0; i < tasks; i++) {
|
|
pid[i] = fork();
|
|
if (pid[i] == 0) {
|
|
for (i = 0; i < 6; i++) {
|
|
bpf_map_delete_elem(map_fd_tx, &i);
|
|
bpf_map_delete_elem(map_fd_rx, &i);
|
|
bpf_map_update_elem(map_fd_tx, &i,
|
|
&sfd[i], BPF_ANY);
|
|
bpf_map_update_elem(map_fd_rx, &i,
|
|
&sfd[i], BPF_ANY);
|
|
}
|
|
exit(0);
|
|
} else if (pid[i] == -1) {
|
|
printf("Couldn't spawn #%d process!\n", i);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < tasks; i++) {
|
|
int status;
|
|
|
|
assert(waitpid(pid[i], &status, 0) == pid[i]);
|
|
assert(status == 0);
|
|
}
|
|
|
|
err = bpf_prog_detach(map_fd_rx, __MAX_BPF_ATTACH_TYPE);
|
|
if (!err) {
|
|
printf("Detached an invalid prog type.\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_detach(map_fd_rx, BPF_SK_SKB_STREAM_PARSER);
|
|
if (err) {
|
|
printf("Failed parser prog detach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
err = bpf_prog_detach(map_fd_rx, BPF_SK_SKB_STREAM_VERDICT);
|
|
if (err) {
|
|
printf("Failed parser prog detach\n");
|
|
goto out_sockmap;
|
|
}
|
|
|
|
/* Test map close sockets and empty maps */
|
|
for (i = 0; i < 6; i++) {
|
|
bpf_map_delete_elem(map_fd_tx, &i);
|
|
bpf_map_delete_elem(map_fd_rx, &i);
|
|
close(sfd[i]);
|
|
}
|
|
close(fd);
|
|
close(map_fd_rx);
|
|
bpf_object__close(obj);
|
|
return;
|
|
out:
|
|
for (i = 0; i < 6; i++)
|
|
close(sfd[i]);
|
|
printf("Failed to create sockmap '%i:%s'!\n", i, strerror(errno));
|
|
exit(1);
|
|
out_sockmap:
|
|
for (i = 0; i < 6; i++) {
|
|
if (map_fd_tx)
|
|
bpf_map_delete_elem(map_fd_tx, &i);
|
|
if (map_fd_rx)
|
|
bpf_map_delete_elem(map_fd_rx, &i);
|
|
close(sfd[i]);
|
|
}
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
|
|
#define MAPINMAP_PROG "./test_map_in_map.o"
|
|
static void test_map_in_map(void)
|
|
{
|
|
struct bpf_program *prog;
|
|
struct bpf_object *obj;
|
|
struct bpf_map *map;
|
|
int mim_fd, fd, err;
|
|
int pos = 0;
|
|
|
|
obj = bpf_object__open(MAPINMAP_PROG);
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(int), sizeof(int),
|
|
2, 0);
|
|
if (fd < 0) {
|
|
printf("Failed to create hashmap '%s'!\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
map = bpf_object__find_map_by_name(obj, "mim_array");
|
|
if (IS_ERR(map)) {
|
|
printf("Failed to load array of maps from test prog\n");
|
|
goto out_map_in_map;
|
|
}
|
|
err = bpf_map__set_inner_map_fd(map, fd);
|
|
if (err) {
|
|
printf("Failed to set inner_map_fd for array of maps\n");
|
|
goto out_map_in_map;
|
|
}
|
|
|
|
map = bpf_object__find_map_by_name(obj, "mim_hash");
|
|
if (IS_ERR(map)) {
|
|
printf("Failed to load hash of maps from test prog\n");
|
|
goto out_map_in_map;
|
|
}
|
|
err = bpf_map__set_inner_map_fd(map, fd);
|
|
if (err) {
|
|
printf("Failed to set inner_map_fd for hash of maps\n");
|
|
goto out_map_in_map;
|
|
}
|
|
|
|
bpf_object__for_each_program(prog, obj) {
|
|
bpf_program__set_xdp(prog);
|
|
}
|
|
bpf_object__load(obj);
|
|
|
|
map = bpf_object__find_map_by_name(obj, "mim_array");
|
|
if (IS_ERR(map)) {
|
|
printf("Failed to load array of maps from test prog\n");
|
|
goto out_map_in_map;
|
|
}
|
|
mim_fd = bpf_map__fd(map);
|
|
if (mim_fd < 0) {
|
|
printf("Failed to get descriptor for array of maps\n");
|
|
goto out_map_in_map;
|
|
}
|
|
|
|
err = bpf_map_update_elem(mim_fd, &pos, &fd, 0);
|
|
if (err) {
|
|
printf("Failed to update array of maps\n");
|
|
goto out_map_in_map;
|
|
}
|
|
|
|
map = bpf_object__find_map_by_name(obj, "mim_hash");
|
|
if (IS_ERR(map)) {
|
|
printf("Failed to load hash of maps from test prog\n");
|
|
goto out_map_in_map;
|
|
}
|
|
mim_fd = bpf_map__fd(map);
|
|
if (mim_fd < 0) {
|
|
printf("Failed to get descriptor for hash of maps\n");
|
|
goto out_map_in_map;
|
|
}
|
|
|
|
err = bpf_map_update_elem(mim_fd, &pos, &fd, 0);
|
|
if (err) {
|
|
printf("Failed to update hash of maps\n");
|
|
goto out_map_in_map;
|
|
}
|
|
|
|
close(fd);
|
|
bpf_object__close(obj);
|
|
return;
|
|
|
|
out_map_in_map:
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
|
|
#define MAP_SIZE (32 * 1024)
|
|
|
|
static void test_map_large(void)
|
|
{
|
|
struct bigkey {
|
|
int a;
|
|
char b[116];
|
|
long long c;
|
|
} key;
|
|
int fd, i, value;
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(key), sizeof(value),
|
|
MAP_SIZE, map_flags);
|
|
if (fd < 0) {
|
|
printf("Failed to create large map '%s'!\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
for (i = 0; i < MAP_SIZE; i++) {
|
|
key = (struct bigkey) { .c = i };
|
|
value = i;
|
|
|
|
assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == 0);
|
|
}
|
|
|
|
key.c = -1;
|
|
assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
|
|
errno == E2BIG);
|
|
|
|
/* Iterate through all elements. */
|
|
assert(bpf_map_get_next_key(fd, NULL, &key) == 0);
|
|
key.c = -1;
|
|
for (i = 0; i < MAP_SIZE; i++)
|
|
assert(bpf_map_get_next_key(fd, &key, &key) == 0);
|
|
assert(bpf_map_get_next_key(fd, &key, &key) == -1 && errno == ENOENT);
|
|
|
|
key.c = 0;
|
|
assert(bpf_map_lookup_elem(fd, &key, &value) == 0 && value == 0);
|
|
key.a = 1;
|
|
assert(bpf_map_lookup_elem(fd, &key, &value) == -1 && errno == ENOENT);
|
|
|
|
close(fd);
|
|
}
|
|
|
|
#define run_parallel(N, FN, DATA) \
|
|
printf("Fork %u tasks to '" #FN "'\n", N); \
|
|
__run_parallel(N, FN, DATA)
|
|
|
|
static void __run_parallel(unsigned int tasks,
|
|
void (*fn)(unsigned int task, void *data),
|
|
void *data)
|
|
{
|
|
pid_t pid[tasks];
|
|
int i;
|
|
|
|
for (i = 0; i < tasks; i++) {
|
|
pid[i] = fork();
|
|
if (pid[i] == 0) {
|
|
fn(i, data);
|
|
exit(0);
|
|
} else if (pid[i] == -1) {
|
|
printf("Couldn't spawn #%d process!\n", i);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < tasks; i++) {
|
|
int status;
|
|
|
|
assert(waitpid(pid[i], &status, 0) == pid[i]);
|
|
assert(status == 0);
|
|
}
|
|
}
|
|
|
|
static void test_map_stress(void)
|
|
{
|
|
run_parallel(100, test_hashmap, NULL);
|
|
run_parallel(100, test_hashmap_percpu, NULL);
|
|
run_parallel(100, test_hashmap_sizes, NULL);
|
|
run_parallel(100, test_hashmap_walk, NULL);
|
|
|
|
run_parallel(100, test_arraymap, NULL);
|
|
run_parallel(100, test_arraymap_percpu, NULL);
|
|
}
|
|
|
|
#define TASKS 1024
|
|
|
|
#define DO_UPDATE 1
|
|
#define DO_DELETE 0
|
|
|
|
static void test_update_delete(unsigned int fn, void *data)
|
|
{
|
|
int do_update = ((int *)data)[1];
|
|
int fd = ((int *)data)[0];
|
|
int i, key, value;
|
|
|
|
for (i = fn; i < MAP_SIZE; i += TASKS) {
|
|
key = value = i;
|
|
|
|
if (do_update) {
|
|
assert(bpf_map_update_elem(fd, &key, &value,
|
|
BPF_NOEXIST) == 0);
|
|
assert(bpf_map_update_elem(fd, &key, &value,
|
|
BPF_EXIST) == 0);
|
|
} else {
|
|
assert(bpf_map_delete_elem(fd, &key) == 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void test_map_parallel(void)
|
|
{
|
|
int i, fd, key = 0, value = 0;
|
|
int data[2];
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(key), sizeof(value),
|
|
MAP_SIZE, map_flags);
|
|
if (fd < 0) {
|
|
printf("Failed to create map for parallel test '%s'!\n",
|
|
strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
/* Use the same fd in children to add elements to this map:
|
|
* child_0 adds key=0, key=1024, key=2048, ...
|
|
* child_1 adds key=1, key=1025, key=2049, ...
|
|
* child_1023 adds key=1023, ...
|
|
*/
|
|
data[0] = fd;
|
|
data[1] = DO_UPDATE;
|
|
run_parallel(TASKS, test_update_delete, data);
|
|
|
|
/* Check that key=0 is already there. */
|
|
assert(bpf_map_update_elem(fd, &key, &value, BPF_NOEXIST) == -1 &&
|
|
errno == EEXIST);
|
|
|
|
/* Check that all elements were inserted. */
|
|
assert(bpf_map_get_next_key(fd, NULL, &key) == 0);
|
|
key = -1;
|
|
for (i = 0; i < MAP_SIZE; i++)
|
|
assert(bpf_map_get_next_key(fd, &key, &key) == 0);
|
|
assert(bpf_map_get_next_key(fd, &key, &key) == -1 && errno == ENOENT);
|
|
|
|
/* Another check for all elements */
|
|
for (i = 0; i < MAP_SIZE; i++) {
|
|
key = MAP_SIZE - i - 1;
|
|
|
|
assert(bpf_map_lookup_elem(fd, &key, &value) == 0 &&
|
|
value == key);
|
|
}
|
|
|
|
/* Now let's delete all elemenets in parallel. */
|
|
data[1] = DO_DELETE;
|
|
run_parallel(TASKS, test_update_delete, data);
|
|
|
|
/* Nothing should be left. */
|
|
key = -1;
|
|
assert(bpf_map_get_next_key(fd, NULL, &key) == -1 && errno == ENOENT);
|
|
assert(bpf_map_get_next_key(fd, &key, &key) == -1 && errno == ENOENT);
|
|
}
|
|
|
|
static void test_map_rdonly(void)
|
|
{
|
|
int fd, key = 0, value = 0;
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(key), sizeof(value),
|
|
MAP_SIZE, map_flags | BPF_F_RDONLY);
|
|
if (fd < 0) {
|
|
printf("Failed to create map for read only test '%s'!\n",
|
|
strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
key = 1;
|
|
value = 1234;
|
|
/* Insert key=1 element. */
|
|
assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == -1 &&
|
|
errno == EPERM);
|
|
|
|
/* Check that key=2 is not found. */
|
|
assert(bpf_map_lookup_elem(fd, &key, &value) == -1 && errno == ENOENT);
|
|
assert(bpf_map_get_next_key(fd, &key, &value) == -1 && errno == ENOENT);
|
|
}
|
|
|
|
static void test_map_wronly(void)
|
|
{
|
|
int fd, key = 0, value = 0;
|
|
|
|
fd = bpf_create_map(BPF_MAP_TYPE_HASH, sizeof(key), sizeof(value),
|
|
MAP_SIZE, map_flags | BPF_F_WRONLY);
|
|
if (fd < 0) {
|
|
printf("Failed to create map for read only test '%s'!\n",
|
|
strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
key = 1;
|
|
value = 1234;
|
|
/* Insert key=1 element. */
|
|
assert(bpf_map_update_elem(fd, &key, &value, BPF_ANY) == 0);
|
|
|
|
/* Check that key=2 is not found. */
|
|
assert(bpf_map_lookup_elem(fd, &key, &value) == -1 && errno == EPERM);
|
|
assert(bpf_map_get_next_key(fd, &key, &value) == -1 && errno == EPERM);
|
|
}
|
|
|
|
static void prepare_reuseport_grp(int type, int map_fd, size_t map_elem_size,
|
|
__s64 *fds64, __u64 *sk_cookies,
|
|
unsigned int n)
|
|
{
|
|
socklen_t optlen, addrlen;
|
|
struct sockaddr_in6 s6;
|
|
const __u32 index0 = 0;
|
|
const int optval = 1;
|
|
unsigned int i;
|
|
u64 sk_cookie;
|
|
void *value;
|
|
__s32 fd32;
|
|
__s64 fd64;
|
|
int err;
|
|
|
|
s6.sin6_family = AF_INET6;
|
|
s6.sin6_addr = in6addr_any;
|
|
s6.sin6_port = 0;
|
|
addrlen = sizeof(s6);
|
|
optlen = sizeof(sk_cookie);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
fd64 = socket(AF_INET6, type, 0);
|
|
CHECK(fd64 == -1, "socket()",
|
|
"sock_type:%d fd64:%lld errno:%d\n",
|
|
type, fd64, errno);
|
|
|
|
err = setsockopt(fd64, SOL_SOCKET, SO_REUSEPORT,
|
|
&optval, sizeof(optval));
|
|
CHECK(err == -1, "setsockopt(SO_REUSEPORT)",
|
|
"err:%d errno:%d\n", err, errno);
|
|
|
|
/* reuseport_array does not allow unbound sk */
|
|
if (map_elem_size == sizeof(__u64))
|
|
value = &fd64;
|
|
else {
|
|
assert(map_elem_size == sizeof(__u32));
|
|
fd32 = (__s32)fd64;
|
|
value = &fd32;
|
|
}
|
|
err = bpf_map_update_elem(map_fd, &index0, value, BPF_ANY);
|
|
CHECK(err != -1 || errno != EINVAL,
|
|
"reuseport array update unbound sk",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
|
|
err = bind(fd64, (struct sockaddr *)&s6, sizeof(s6));
|
|
CHECK(err == -1, "bind()",
|
|
"sock_type:%d err:%d errno:%d\n", type, err, errno);
|
|
|
|
if (i == 0) {
|
|
err = getsockname(fd64, (struct sockaddr *)&s6,
|
|
&addrlen);
|
|
CHECK(err == -1, "getsockname()",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
}
|
|
|
|
err = getsockopt(fd64, SOL_SOCKET, SO_COOKIE, &sk_cookie,
|
|
&optlen);
|
|
CHECK(err == -1, "getsockopt(SO_COOKIE)",
|
|
"sock_type:%d err:%d errno:%d\n", type, err, errno);
|
|
|
|
if (type == SOCK_STREAM) {
|
|
/*
|
|
* reuseport_array does not allow
|
|
* non-listening tcp sk.
|
|
*/
|
|
err = bpf_map_update_elem(map_fd, &index0, value,
|
|
BPF_ANY);
|
|
CHECK(err != -1 || errno != EINVAL,
|
|
"reuseport array update non-listening sk",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
err = listen(fd64, 0);
|
|
CHECK(err == -1, "listen()",
|
|
"sock_type:%d, err:%d errno:%d\n",
|
|
type, err, errno);
|
|
}
|
|
|
|
fds64[i] = fd64;
|
|
sk_cookies[i] = sk_cookie;
|
|
}
|
|
}
|
|
|
|
static void test_reuseport_array(void)
|
|
{
|
|
#define REUSEPORT_FD_IDX(err, last) ({ (err) ? last : !last; })
|
|
|
|
const __u32 array_size = 4, index0 = 0, index3 = 3;
|
|
int types[2] = { SOCK_STREAM, SOCK_DGRAM }, type;
|
|
__u64 grpa_cookies[2], sk_cookie, map_cookie;
|
|
__s64 grpa_fds64[2] = { -1, -1 }, fd64 = -1;
|
|
const __u32 bad_index = array_size;
|
|
int map_fd, err, t, f;
|
|
__u32 fds_idx = 0;
|
|
int fd;
|
|
|
|
map_fd = bpf_create_map(BPF_MAP_TYPE_REUSEPORT_SOCKARRAY,
|
|
sizeof(__u32), sizeof(__u64), array_size, 0);
|
|
CHECK(map_fd == -1, "reuseport array create",
|
|
"map_fd:%d, errno:%d\n", map_fd, errno);
|
|
|
|
/* Test lookup/update/delete with invalid index */
|
|
err = bpf_map_delete_elem(map_fd, &bad_index);
|
|
CHECK(err != -1 || errno != E2BIG, "reuseport array del >=max_entries",
|
|
"err:%d errno:%d\n", err, errno);
|
|
|
|
err = bpf_map_update_elem(map_fd, &bad_index, &fd64, BPF_ANY);
|
|
CHECK(err != -1 || errno != E2BIG,
|
|
"reuseport array update >=max_entries",
|
|
"err:%d errno:%d\n", err, errno);
|
|
|
|
err = bpf_map_lookup_elem(map_fd, &bad_index, &map_cookie);
|
|
CHECK(err != -1 || errno != ENOENT,
|
|
"reuseport array update >=max_entries",
|
|
"err:%d errno:%d\n", err, errno);
|
|
|
|
/* Test lookup/delete non existence elem */
|
|
err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
|
|
CHECK(err != -1 || errno != ENOENT,
|
|
"reuseport array lookup not-exist elem",
|
|
"err:%d errno:%d\n", err, errno);
|
|
err = bpf_map_delete_elem(map_fd, &index3);
|
|
CHECK(err != -1 || errno != ENOENT,
|
|
"reuseport array del not-exist elem",
|
|
"err:%d errno:%d\n", err, errno);
|
|
|
|
for (t = 0; t < ARRAY_SIZE(types); t++) {
|
|
type = types[t];
|
|
|
|
prepare_reuseport_grp(type, map_fd, sizeof(__u64), grpa_fds64,
|
|
grpa_cookies, ARRAY_SIZE(grpa_fds64));
|
|
|
|
/* Test BPF_* update flags */
|
|
/* BPF_EXIST failure case */
|
|
err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
|
|
BPF_EXIST);
|
|
CHECK(err != -1 || errno != ENOENT,
|
|
"reuseport array update empty elem BPF_EXIST",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
|
|
|
|
/* BPF_NOEXIST success case */
|
|
err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
|
|
BPF_NOEXIST);
|
|
CHECK(err == -1,
|
|
"reuseport array update empty elem BPF_NOEXIST",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
|
|
|
|
/* BPF_EXIST success case. */
|
|
err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
|
|
BPF_EXIST);
|
|
CHECK(err == -1,
|
|
"reuseport array update same elem BPF_EXIST",
|
|
"sock_type:%d err:%d errno:%d\n", type, err, errno);
|
|
fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
|
|
|
|
/* BPF_NOEXIST failure case */
|
|
err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
|
|
BPF_NOEXIST);
|
|
CHECK(err != -1 || errno != EEXIST,
|
|
"reuseport array update non-empty elem BPF_NOEXIST",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
fds_idx = REUSEPORT_FD_IDX(err, fds_idx);
|
|
|
|
/* BPF_ANY case (always succeed) */
|
|
err = bpf_map_update_elem(map_fd, &index3, &grpa_fds64[fds_idx],
|
|
BPF_ANY);
|
|
CHECK(err == -1,
|
|
"reuseport array update same sk with BPF_ANY",
|
|
"sock_type:%d err:%d errno:%d\n", type, err, errno);
|
|
|
|
fd64 = grpa_fds64[fds_idx];
|
|
sk_cookie = grpa_cookies[fds_idx];
|
|
|
|
/* The same sk cannot be added to reuseport_array twice */
|
|
err = bpf_map_update_elem(map_fd, &index3, &fd64, BPF_ANY);
|
|
CHECK(err != -1 || errno != EBUSY,
|
|
"reuseport array update same sk with same index",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
|
|
err = bpf_map_update_elem(map_fd, &index0, &fd64, BPF_ANY);
|
|
CHECK(err != -1 || errno != EBUSY,
|
|
"reuseport array update same sk with different index",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
|
|
/* Test delete elem */
|
|
err = bpf_map_delete_elem(map_fd, &index3);
|
|
CHECK(err == -1, "reuseport array delete sk",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
|
|
/* Add it back with BPF_NOEXIST */
|
|
err = bpf_map_update_elem(map_fd, &index3, &fd64, BPF_NOEXIST);
|
|
CHECK(err == -1,
|
|
"reuseport array re-add with BPF_NOEXIST after del",
|
|
"sock_type:%d err:%d errno:%d\n", type, err, errno);
|
|
|
|
/* Test cookie */
|
|
err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
|
|
CHECK(err == -1 || sk_cookie != map_cookie,
|
|
"reuseport array lookup re-added sk",
|
|
"sock_type:%d err:%d errno:%d sk_cookie:0x%llx map_cookie:0x%llxn",
|
|
type, err, errno, sk_cookie, map_cookie);
|
|
|
|
/* Test elem removed by close() */
|
|
for (f = 0; f < ARRAY_SIZE(grpa_fds64); f++)
|
|
close(grpa_fds64[f]);
|
|
err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
|
|
CHECK(err != -1 || errno != ENOENT,
|
|
"reuseport array lookup after close()",
|
|
"sock_type:%d err:%d errno:%d\n",
|
|
type, err, errno);
|
|
}
|
|
|
|
/* Test SOCK_RAW */
|
|
fd64 = socket(AF_INET6, SOCK_RAW, IPPROTO_UDP);
|
|
CHECK(fd64 == -1, "socket(SOCK_RAW)", "err:%d errno:%d\n",
|
|
err, errno);
|
|
err = bpf_map_update_elem(map_fd, &index3, &fd64, BPF_NOEXIST);
|
|
CHECK(err != -1 || errno != ENOTSUPP, "reuseport array update SOCK_RAW",
|
|
"err:%d errno:%d\n", err, errno);
|
|
close(fd64);
|
|
|
|
/* Close the 64 bit value map */
|
|
close(map_fd);
|
|
|
|
/* Test 32 bit fd */
|
|
map_fd = bpf_create_map(BPF_MAP_TYPE_REUSEPORT_SOCKARRAY,
|
|
sizeof(__u32), sizeof(__u32), array_size, 0);
|
|
CHECK(map_fd == -1, "reuseport array create",
|
|
"map_fd:%d, errno:%d\n", map_fd, errno);
|
|
prepare_reuseport_grp(SOCK_STREAM, map_fd, sizeof(__u32), &fd64,
|
|
&sk_cookie, 1);
|
|
fd = fd64;
|
|
err = bpf_map_update_elem(map_fd, &index3, &fd, BPF_NOEXIST);
|
|
CHECK(err == -1, "reuseport array update 32 bit fd",
|
|
"err:%d errno:%d\n", err, errno);
|
|
err = bpf_map_lookup_elem(map_fd, &index3, &map_cookie);
|
|
CHECK(err != -1 || errno != ENOSPC,
|
|
"reuseport array lookup 32 bit fd",
|
|
"err:%d errno:%d\n", err, errno);
|
|
close(fd);
|
|
close(map_fd);
|
|
}
|
|
|
|
static void run_all_tests(void)
|
|
{
|
|
test_hashmap(0, NULL);
|
|
test_hashmap_percpu(0, NULL);
|
|
test_hashmap_walk(0, NULL);
|
|
test_hashmap_zero_seed();
|
|
|
|
test_arraymap(0, NULL);
|
|
test_arraymap_percpu(0, NULL);
|
|
|
|
test_arraymap_percpu_many_keys();
|
|
|
|
test_devmap(0, NULL);
|
|
test_devmap_hash(0, NULL);
|
|
test_sockmap(0, NULL);
|
|
|
|
test_map_large();
|
|
test_map_parallel();
|
|
test_map_stress();
|
|
|
|
test_map_rdonly();
|
|
test_map_wronly();
|
|
|
|
test_reuseport_array();
|
|
|
|
test_queuemap(0, NULL);
|
|
test_stackmap(0, NULL);
|
|
|
|
test_map_in_map();
|
|
}
|
|
|
|
#define DECLARE
|
|
#include <map_tests/tests.h>
|
|
#undef DECLARE
|
|
|
|
int main(void)
|
|
{
|
|
srand(time(NULL));
|
|
|
|
map_flags = 0;
|
|
run_all_tests();
|
|
|
|
map_flags = BPF_F_NO_PREALLOC;
|
|
run_all_tests();
|
|
|
|
#define CALL
|
|
#include <map_tests/tests.h>
|
|
#undef CALL
|
|
|
|
printf("test_maps: OK, %d SKIPPED\n", skips);
|
|
return 0;
|
|
}
|