Commit b0b04fc4 authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by Daniel Borkmann

selftests/bpf: add xdp noinline test

add large semi-artificial XDP test with 18 functions to stress test
bpf call verification logic
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 3bc35c63
...@@ -18,7 +18,7 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test ...@@ -18,7 +18,7 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test
TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \ TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \ test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \
sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \ sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
test_l4lb_noinline.o test_l4lb_noinline.o test_xdp_noinline.o
TEST_PROGS := test_kmod.sh test_xdp_redirect.sh test_xdp_meta.sh \ TEST_PROGS := test_kmod.sh test_xdp_redirect.sh test_xdp_meta.sh \
test_offload.py test_offload.py
...@@ -54,6 +54,7 @@ CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \ ...@@ -54,6 +54,7 @@ CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
-Wno-compare-distinct-pointer-types -Wno-compare-distinct-pointer-types
$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
%.o: %.c %.o: %.c
$(CLANG) $(CLANG_FLAGS) \ $(CLANG) $(CLANG_FLAGS) \
......
...@@ -257,6 +257,86 @@ static void test_l4lb_all(void) ...@@ -257,6 +257,86 @@ static void test_l4lb_all(void)
test_l4lb(file2); test_l4lb(file2);
} }
static void test_xdp_noinline(void)
{
const char *file = "./test_xdp_noinline.o";
unsigned int nr_cpus = bpf_num_possible_cpus();
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_XDP, &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 != 1 || 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 != 1 || 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_xdp_noinline:FAIL:stats %lld %lld\n", bytes, pkts);
}
out:
bpf_object__close(obj);
}
static void test_tcp_estats(void) static void test_tcp_estats(void)
{ {
const char *file = "./test_tcp_estats.o"; const char *file = "./test_tcp_estats.o";
...@@ -766,6 +846,7 @@ int main(void) ...@@ -766,6 +846,7 @@ int main(void)
test_pkt_access(); test_pkt_access();
test_xdp(); test_xdp();
test_l4lb_all(); test_l4lb_all();
test_xdp_noinline();
test_tcp_estats(); test_tcp_estats();
test_bpf_obj_id(); test_bpf_obj_id();
test_pkt_md_access(); test_pkt_md_access();
......
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