mirror of https://gitee.com/openkylin/linux.git
514 lines
14 KiB
C
514 lines
14 KiB
C
/* Copyright (c) 2017 Facebook
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <linux/types.h>
|
|
typedef __u16 __sum16;
|
|
#include <arpa/inet.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/if_packet.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/ipv6.h>
|
|
#include <linux/tcp.h>
|
|
|
|
#include <sys/wait.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <linux/bpf.h>
|
|
#include <linux/err.h>
|
|
#include <bpf/bpf.h>
|
|
#include <bpf/libbpf.h>
|
|
#include "test_iptunnel_common.h"
|
|
#include "bpf_util.h"
|
|
#include "bpf_endian.h"
|
|
|
|
static int error_cnt, pass_cnt;
|
|
|
|
#define MAGIC_BYTES 123
|
|
|
|
/* ipv4 test vector */
|
|
static struct {
|
|
struct ethhdr eth;
|
|
struct iphdr iph;
|
|
struct tcphdr tcp;
|
|
} __packed pkt_v4 = {
|
|
.eth.h_proto = bpf_htons(ETH_P_IP),
|
|
.iph.ihl = 5,
|
|
.iph.protocol = 6,
|
|
.iph.tot_len = bpf_htons(MAGIC_BYTES),
|
|
.tcp.urg_ptr = 123,
|
|
};
|
|
|
|
/* ipv6 test vector */
|
|
static struct {
|
|
struct ethhdr eth;
|
|
struct ipv6hdr iph;
|
|
struct tcphdr tcp;
|
|
} __packed pkt_v6 = {
|
|
.eth.h_proto = bpf_htons(ETH_P_IPV6),
|
|
.iph.nexthdr = 6,
|
|
.iph.payload_len = bpf_htons(MAGIC_BYTES),
|
|
.tcp.urg_ptr = 123,
|
|
};
|
|
|
|
#define CHECK(condition, tag, format...) ({ \
|
|
int __ret = !!(condition); \
|
|
if (__ret) { \
|
|
error_cnt++; \
|
|
printf("%s:FAIL:%s ", __func__, tag); \
|
|
printf(format); \
|
|
} else { \
|
|
pass_cnt++; \
|
|
printf("%s:PASS:%s %d nsec\n", __func__, tag, duration);\
|
|
} \
|
|
__ret; \
|
|
})
|
|
|
|
static int bpf_find_map(const char *test, struct bpf_object *obj,
|
|
const char *name)
|
|
{
|
|
struct bpf_map *map;
|
|
|
|
map = bpf_object__find_map_by_name(obj, name);
|
|
if (!map) {
|
|
printf("%s:FAIL:map '%s' not found\n", test, name);
|
|
error_cnt++;
|
|
return -1;
|
|
}
|
|
return bpf_map__fd(map);
|
|
}
|
|
|
|
static void test_pkt_access(void)
|
|
{
|
|
const char *file = "./test_pkt_access.o";
|
|
struct bpf_object *obj;
|
|
__u32 duration, retval;
|
|
int err, prog_fd;
|
|
|
|
err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
|
|
if (err) {
|
|
error_cnt++;
|
|
return;
|
|
}
|
|
|
|
err = bpf_prog_test_run(prog_fd, 100000, &pkt_v4, sizeof(pkt_v4),
|
|
NULL, NULL, &retval, &duration);
|
|
CHECK(err || errno || retval, "ipv4",
|
|
"err %d errno %d retval %d duration %d\n",
|
|
err, errno, retval, duration);
|
|
|
|
err = bpf_prog_test_run(prog_fd, 100000, &pkt_v6, sizeof(pkt_v6),
|
|
NULL, NULL, &retval, &duration);
|
|
CHECK(err || errno || retval, "ipv6",
|
|
"err %d errno %d retval %d duration %d\n",
|
|
err, errno, retval, duration);
|
|
bpf_object__close(obj);
|
|
}
|
|
|
|
static void test_xdp(void)
|
|
{
|
|
struct vip key4 = {.protocol = 6, .family = AF_INET};
|
|
struct vip key6 = {.protocol = 6, .family = AF_INET6};
|
|
struct iptnl_info value4 = {.family = AF_INET};
|
|
struct iptnl_info value6 = {.family = AF_INET6};
|
|
const char *file = "./test_xdp.o";
|
|
struct bpf_object *obj;
|
|
char buf[128];
|
|
struct ipv6hdr *iph6 = (void *)buf + sizeof(struct ethhdr);
|
|
struct iphdr *iph = (void *)buf + sizeof(struct ethhdr);
|
|
__u32 duration, retval, size;
|
|
int err, prog_fd, map_fd;
|
|
|
|
err = bpf_prog_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
|
|
if (err) {
|
|
error_cnt++;
|
|
return;
|
|
}
|
|
|
|
map_fd = bpf_find_map(__func__, obj, "vip2tnl");
|
|
if (map_fd < 0)
|
|
goto out;
|
|
bpf_map_update_elem(map_fd, &key4, &value4, 0);
|
|
bpf_map_update_elem(map_fd, &key6, &value6, 0);
|
|
|
|
err = bpf_prog_test_run(prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
|
|
buf, &size, &retval, &duration);
|
|
|
|
CHECK(err || errno || retval != XDP_TX || size != 74 ||
|
|
iph->protocol != IPPROTO_IPIP, "ipv4",
|
|
"err %d errno %d retval %d size %d\n",
|
|
err, errno, retval, size);
|
|
|
|
err = bpf_prog_test_run(prog_fd, 1, &pkt_v6, sizeof(pkt_v6),
|
|
buf, &size, &retval, &duration);
|
|
CHECK(err || errno || retval != XDP_TX || size != 114 ||
|
|
iph6->nexthdr != IPPROTO_IPV6, "ipv6",
|
|
"err %d errno %d retval %d size %d\n",
|
|
err, errno, retval, size);
|
|
out:
|
|
bpf_object__close(obj);
|
|
}
|
|
|
|
#define MAGIC_VAL 0x1234
|
|
#define NUM_ITER 100000
|
|
#define VIP_NUM 5
|
|
|
|
static void test_l4lb(void)
|
|
{
|
|
unsigned int nr_cpus = bpf_num_possible_cpus();
|
|
const char *file = "./test_l4lb.o";
|
|
struct vip key = {.protocol = 6};
|
|
struct vip_meta {
|
|
__u32 flags;
|
|
__u32 vip_num;
|
|
} value = {.vip_num = VIP_NUM};
|
|
__u32 stats_key = VIP_NUM;
|
|
struct vip_stats {
|
|
__u64 bytes;
|
|
__u64 pkts;
|
|
} stats[nr_cpus];
|
|
struct real_definition {
|
|
union {
|
|
__be32 dst;
|
|
__be32 dstv6[4];
|
|
};
|
|
__u8 flags;
|
|
} real_def = {.dst = MAGIC_VAL};
|
|
__u32 ch_key = 11, real_num = 3;
|
|
__u32 duration, retval, size;
|
|
int err, i, prog_fd, map_fd;
|
|
__u64 bytes = 0, pkts = 0;
|
|
struct bpf_object *obj;
|
|
char buf[128];
|
|
u32 *magic = (u32 *)buf;
|
|
|
|
err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
|
|
if (err) {
|
|
error_cnt++;
|
|
return;
|
|
}
|
|
|
|
map_fd = bpf_find_map(__func__, obj, "vip_map");
|
|
if (map_fd < 0)
|
|
goto out;
|
|
bpf_map_update_elem(map_fd, &key, &value, 0);
|
|
|
|
map_fd = bpf_find_map(__func__, obj, "ch_rings");
|
|
if (map_fd < 0)
|
|
goto out;
|
|
bpf_map_update_elem(map_fd, &ch_key, &real_num, 0);
|
|
|
|
map_fd = bpf_find_map(__func__, obj, "reals");
|
|
if (map_fd < 0)
|
|
goto out;
|
|
bpf_map_update_elem(map_fd, &real_num, &real_def, 0);
|
|
|
|
err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v4, sizeof(pkt_v4),
|
|
buf, &size, &retval, &duration);
|
|
CHECK(err || errno || retval != 7/*TC_ACT_REDIRECT*/ || size != 54 ||
|
|
*magic != MAGIC_VAL, "ipv4",
|
|
"err %d errno %d retval %d size %d magic %x\n",
|
|
err, errno, retval, size, *magic);
|
|
|
|
err = bpf_prog_test_run(prog_fd, NUM_ITER, &pkt_v6, sizeof(pkt_v6),
|
|
buf, &size, &retval, &duration);
|
|
CHECK(err || errno || retval != 7/*TC_ACT_REDIRECT*/ || size != 74 ||
|
|
*magic != MAGIC_VAL, "ipv6",
|
|
"err %d errno %d retval %d size %d magic %x\n",
|
|
err, errno, retval, size, *magic);
|
|
|
|
map_fd = bpf_find_map(__func__, obj, "stats");
|
|
if (map_fd < 0)
|
|
goto out;
|
|
bpf_map_lookup_elem(map_fd, &stats_key, stats);
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
bytes += stats[i].bytes;
|
|
pkts += stats[i].pkts;
|
|
}
|
|
if (bytes != MAGIC_BYTES * NUM_ITER * 2 || pkts != NUM_ITER * 2) {
|
|
error_cnt++;
|
|
printf("test_l4lb:FAIL:stats %lld %lld\n", bytes, pkts);
|
|
}
|
|
out:
|
|
bpf_object__close(obj);
|
|
}
|
|
|
|
static void test_tcp_estats(void)
|
|
{
|
|
const char *file = "./test_tcp_estats.o";
|
|
int err, prog_fd;
|
|
struct bpf_object *obj;
|
|
__u32 duration = 0;
|
|
|
|
err = bpf_prog_load(file, BPF_PROG_TYPE_TRACEPOINT, &obj, &prog_fd);
|
|
CHECK(err, "", "err %d errno %d\n", err, errno);
|
|
if (err) {
|
|
error_cnt++;
|
|
return;
|
|
}
|
|
|
|
bpf_object__close(obj);
|
|
}
|
|
|
|
static inline __u64 ptr_to_u64(const void *ptr)
|
|
{
|
|
return (__u64) (unsigned long) ptr;
|
|
}
|
|
|
|
static void test_bpf_obj_id(void)
|
|
{
|
|
const __u64 array_magic_value = 0xfaceb00c;
|
|
const __u32 array_key = 0;
|
|
const int nr_iters = 2;
|
|
const char *file = "./test_obj_id.o";
|
|
const char *jit_sysctl = "/proc/sys/net/core/bpf_jit_enable";
|
|
|
|
struct bpf_object *objs[nr_iters];
|
|
int prog_fds[nr_iters], map_fds[nr_iters];
|
|
/* +1 to test for the info_len returned by kernel */
|
|
struct bpf_prog_info prog_infos[nr_iters + 1];
|
|
struct bpf_map_info map_infos[nr_iters + 1];
|
|
char jited_insns[128], xlated_insns[128], zeros[128];
|
|
__u32 i, next_id, info_len, nr_id_found, duration = 0;
|
|
int sysctl_fd, jit_enabled = 0, err = 0;
|
|
__u64 array_value;
|
|
|
|
sysctl_fd = open(jit_sysctl, 0, O_RDONLY);
|
|
if (sysctl_fd != -1) {
|
|
char tmpc;
|
|
|
|
if (read(sysctl_fd, &tmpc, sizeof(tmpc)) == 1)
|
|
jit_enabled = (tmpc != '0');
|
|
close(sysctl_fd);
|
|
}
|
|
|
|
err = bpf_prog_get_fd_by_id(0);
|
|
CHECK(err >= 0 || errno != ENOENT,
|
|
"get-fd-by-notexist-prog-id", "err %d errno %d\n", err, errno);
|
|
|
|
err = bpf_map_get_fd_by_id(0);
|
|
CHECK(err >= 0 || errno != ENOENT,
|
|
"get-fd-by-notexist-map-id", "err %d errno %d\n", err, errno);
|
|
|
|
for (i = 0; i < nr_iters; i++)
|
|
objs[i] = NULL;
|
|
|
|
/* Check bpf_obj_get_info_by_fd() */
|
|
bzero(zeros, sizeof(zeros));
|
|
for (i = 0; i < nr_iters; i++) {
|
|
err = bpf_prog_load(file, BPF_PROG_TYPE_SOCKET_FILTER,
|
|
&objs[i], &prog_fds[i]);
|
|
/* test_obj_id.o is a dumb prog. It should never fail
|
|
* to load.
|
|
*/
|
|
if (err)
|
|
error_cnt++;
|
|
assert(!err);
|
|
|
|
/* Check getting prog info */
|
|
info_len = sizeof(struct bpf_prog_info) * 2;
|
|
bzero(&prog_infos[i], info_len);
|
|
bzero(jited_insns, sizeof(jited_insns));
|
|
bzero(xlated_insns, sizeof(xlated_insns));
|
|
prog_infos[i].jited_prog_insns = ptr_to_u64(jited_insns);
|
|
prog_infos[i].jited_prog_len = sizeof(jited_insns);
|
|
prog_infos[i].xlated_prog_insns = ptr_to_u64(xlated_insns);
|
|
prog_infos[i].xlated_prog_len = sizeof(xlated_insns);
|
|
err = bpf_obj_get_info_by_fd(prog_fds[i], &prog_infos[i],
|
|
&info_len);
|
|
if (CHECK(err ||
|
|
prog_infos[i].type != BPF_PROG_TYPE_SOCKET_FILTER ||
|
|
info_len != sizeof(struct bpf_prog_info) ||
|
|
(jit_enabled && !prog_infos[i].jited_prog_len) ||
|
|
(jit_enabled &&
|
|
!memcmp(jited_insns, zeros, sizeof(zeros))) ||
|
|
!prog_infos[i].xlated_prog_len ||
|
|
!memcmp(xlated_insns, zeros, sizeof(zeros)),
|
|
"get-prog-info(fd)",
|
|
"err %d errno %d i %d type %d(%d) info_len %u(%lu) jit_enabled %d jited_prog_len %u xlated_prog_len %u jited_prog %d xlated_prog %d\n",
|
|
err, errno, i,
|
|
prog_infos[i].type, BPF_PROG_TYPE_SOCKET_FILTER,
|
|
info_len, sizeof(struct bpf_prog_info),
|
|
jit_enabled,
|
|
prog_infos[i].jited_prog_len,
|
|
prog_infos[i].xlated_prog_len,
|
|
!!memcmp(jited_insns, zeros, sizeof(zeros)),
|
|
!!memcmp(xlated_insns, zeros, sizeof(zeros))))
|
|
goto done;
|
|
|
|
map_fds[i] = bpf_find_map(__func__, objs[i], "test_map_id");
|
|
assert(map_fds[i] >= 0);
|
|
err = bpf_map_update_elem(map_fds[i], &array_key,
|
|
&array_magic_value, 0);
|
|
assert(!err);
|
|
|
|
/* Check getting map info */
|
|
info_len = sizeof(struct bpf_map_info) * 2;
|
|
bzero(&map_infos[i], info_len);
|
|
err = bpf_obj_get_info_by_fd(map_fds[i], &map_infos[i],
|
|
&info_len);
|
|
if (CHECK(err ||
|
|
map_infos[i].type != BPF_MAP_TYPE_ARRAY ||
|
|
map_infos[i].key_size != sizeof(__u32) ||
|
|
map_infos[i].value_size != sizeof(__u64) ||
|
|
map_infos[i].max_entries != 1 ||
|
|
map_infos[i].map_flags != 0 ||
|
|
info_len != sizeof(struct bpf_map_info),
|
|
"get-map-info(fd)",
|
|
"err %d errno %d type %d(%d) info_len %u(%lu) key_size %u value_size %u max_entries %u map_flags %X\n",
|
|
err, errno,
|
|
map_infos[i].type, BPF_MAP_TYPE_ARRAY,
|
|
info_len, sizeof(struct bpf_map_info),
|
|
map_infos[i].key_size,
|
|
map_infos[i].value_size,
|
|
map_infos[i].max_entries,
|
|
map_infos[i].map_flags))
|
|
goto done;
|
|
}
|
|
|
|
/* Check bpf_prog_get_next_id() */
|
|
nr_id_found = 0;
|
|
next_id = 0;
|
|
while (!bpf_prog_get_next_id(next_id, &next_id)) {
|
|
struct bpf_prog_info prog_info = {};
|
|
int prog_fd;
|
|
|
|
info_len = sizeof(prog_info);
|
|
|
|
prog_fd = bpf_prog_get_fd_by_id(next_id);
|
|
if (prog_fd < 0 && errno == ENOENT)
|
|
/* The bpf_prog is in the dead row */
|
|
continue;
|
|
if (CHECK(prog_fd < 0, "get-prog-fd(next_id)",
|
|
"prog_fd %d next_id %d errno %d\n",
|
|
prog_fd, next_id, errno))
|
|
break;
|
|
|
|
for (i = 0; i < nr_iters; i++)
|
|
if (prog_infos[i].id == next_id)
|
|
break;
|
|
|
|
if (i == nr_iters)
|
|
continue;
|
|
|
|
nr_id_found++;
|
|
|
|
err = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &info_len);
|
|
prog_infos[i].jited_prog_insns = 0;
|
|
prog_infos[i].xlated_prog_insns = 0;
|
|
CHECK(err || info_len != sizeof(struct bpf_prog_info) ||
|
|
memcmp(&prog_info, &prog_infos[i], info_len),
|
|
"get-prog-info(next_id->fd)",
|
|
"err %d errno %d info_len %u(%lu) memcmp %d\n",
|
|
err, errno, info_len, sizeof(struct bpf_prog_info),
|
|
memcmp(&prog_info, &prog_infos[i], info_len));
|
|
|
|
close(prog_fd);
|
|
}
|
|
CHECK(nr_id_found != nr_iters,
|
|
"check total prog id found by get_next_id",
|
|
"nr_id_found %u(%u)\n",
|
|
nr_id_found, nr_iters);
|
|
|
|
/* Check bpf_map_get_next_id() */
|
|
nr_id_found = 0;
|
|
next_id = 0;
|
|
while (!bpf_map_get_next_id(next_id, &next_id)) {
|
|
struct bpf_map_info map_info = {};
|
|
int map_fd;
|
|
|
|
info_len = sizeof(map_info);
|
|
|
|
map_fd = bpf_map_get_fd_by_id(next_id);
|
|
if (map_fd < 0 && errno == ENOENT)
|
|
/* The bpf_map is in the dead row */
|
|
continue;
|
|
if (CHECK(map_fd < 0, "get-map-fd(next_id)",
|
|
"map_fd %d next_id %u errno %d\n",
|
|
map_fd, next_id, errno))
|
|
break;
|
|
|
|
for (i = 0; i < nr_iters; i++)
|
|
if (map_infos[i].id == next_id)
|
|
break;
|
|
|
|
if (i == nr_iters)
|
|
continue;
|
|
|
|
nr_id_found++;
|
|
|
|
err = bpf_map_lookup_elem(map_fd, &array_key, &array_value);
|
|
assert(!err);
|
|
|
|
err = bpf_obj_get_info_by_fd(map_fd, &map_info, &info_len);
|
|
CHECK(err || info_len != sizeof(struct bpf_map_info) ||
|
|
memcmp(&map_info, &map_infos[i], info_len) ||
|
|
array_value != array_magic_value,
|
|
"check get-map-info(next_id->fd)",
|
|
"err %d errno %d info_len %u(%lu) memcmp %d array_value %llu(%llu)\n",
|
|
err, errno, info_len, sizeof(struct bpf_map_info),
|
|
memcmp(&map_info, &map_infos[i], info_len),
|
|
array_value, array_magic_value);
|
|
|
|
close(map_fd);
|
|
}
|
|
CHECK(nr_id_found != nr_iters,
|
|
"check total map id found by get_next_id",
|
|
"nr_id_found %u(%u)\n",
|
|
nr_id_found, nr_iters);
|
|
|
|
done:
|
|
for (i = 0; i < nr_iters; i++)
|
|
bpf_object__close(objs[i]);
|
|
}
|
|
|
|
static void test_pkt_md_access(void)
|
|
{
|
|
const char *file = "./test_pkt_md_access.o";
|
|
struct bpf_object *obj;
|
|
__u32 duration, retval;
|
|
int err, prog_fd;
|
|
|
|
err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
|
|
if (err) {
|
|
error_cnt++;
|
|
return;
|
|
}
|
|
|
|
err = bpf_prog_test_run(prog_fd, 10, &pkt_v4, sizeof(pkt_v4),
|
|
NULL, NULL, &retval, &duration);
|
|
CHECK(err || retval, "",
|
|
"err %d errno %d retval %d duration %d\n",
|
|
err, errno, retval, duration);
|
|
|
|
bpf_object__close(obj);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
|
|
|
|
setrlimit(RLIMIT_MEMLOCK, &rinf);
|
|
|
|
test_pkt_access();
|
|
test_xdp();
|
|
test_l4lb();
|
|
test_tcp_estats();
|
|
test_bpf_obj_id();
|
|
test_pkt_md_access();
|
|
|
|
printf("Summary: %d PASSED, %d FAILED\n", pass_cnt, error_cnt);
|
|
return error_cnt ? EXIT_FAILURE : EXIT_SUCCESS;
|
|
}
|