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-rw-r--r--tools/testing/selftests/bpf/test_progs.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
new file mode 100644
index 000000000000..4ed049a0b14b
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -0,0 +1,283 @@
+/* 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 <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);\
+ } \
+})
+
+static int bpf_prog_load(const char *file, enum bpf_prog_type type,
+ struct bpf_object **pobj, int *prog_fd)
+{
+ struct bpf_program *prog;
+ struct bpf_object *obj;
+ int err;
+
+ obj = bpf_object__open(file);
+ if (IS_ERR(obj)) {
+ error_cnt++;
+ return -ENOENT;
+ }
+
+ prog = bpf_program__next(NULL, obj);
+ if (!prog) {
+ bpf_object__close(obj);
+ error_cnt++;
+ return -ENOENT;
+ }
+
+ bpf_program__set_type(prog, type);
+ err = bpf_object__load(obj);
+ if (err) {
+ bpf_object__close(obj);
+ error_cnt++;
+ return -EINVAL;
+ }
+
+ *pobj = obj;
+ *prog_fd = bpf_program__fd(prog);
+ return 0;
+}
+
+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)
+ 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)
+ 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)
+ 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);
+}
+
+int main(void)
+{
+ struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
+
+ setrlimit(RLIMIT_MEMLOCK, &rinf);
+
+ test_pkt_access();
+ test_xdp();
+ test_l4lb();
+
+ printf("Summary: %d PASSED, %d FAILED\n", pass_cnt, error_cnt);
+ return 0;
+}