leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

selftests/bpf: Add a test case for loading BPF_SK_SKB_VERDICT

Browse Source 
This adds a test case to ensure BPF_SK_SKB_VERDICT and
BPF_SK_STREAM_VERDICT will never be attached at the same time.

Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210331023237.41094-17-xiyou.wangcong@gmail.com
This commit is contained in:
Cong Wang
2021-03-30 19:32:37 -07:00
committed by Alexei Starovoitov
parent d6378af615
commit 8d7cb74f2c
2 changed files with 58 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
View File

@@ -7,6 +7,7 @@
#include "test_skmsg_load_helpers.skel.h"
#include "test_sockmap_update.skel.h"
#include "test_sockmap_invalid_update.skel.h"
#include "test_sockmap_skb_verdict_attach.skel.h"
#include "bpf_iter_sockmap.skel.h"
#define TCP_REPAIR 19 /* TCP sock is under repair right now */
@@ -281,6 +282,39 @@ out:
bpf_iter_sockmap__destroy(skel);
}
static void test_sockmap_skb_verdict_attach(enum bpf_attach_type first,
enum bpf_attach_type second)
{
struct test_sockmap_skb_verdict_attach *skel;
int err, map, verdict;
skel = test_sockmap_skb_verdict_attach__open_and_load();
if (CHECK_FAIL(!skel)) {
perror("test_sockmap_skb_verdict_attach__open_and_load");
return;
}
verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
map = bpf_map__fd(skel->maps.sock_map);
err = bpf_prog_attach(verdict, map, first, 0);
if (CHECK_FAIL(err)) {
perror("bpf_prog_attach");
goto out;
}
err = bpf_prog_attach(verdict, map, second, 0);
assert(err == -1 && errno == EBUSY);
err = bpf_prog_detach2(verdict, map, first);
if (CHECK_FAIL(err)) {
perror("bpf_prog_detach2");
goto out;
}
out:
test_sockmap_skb_verdict_attach__destroy(skel);
}
void test_sockmap_basic(void)
{
if (test__start_subtest("sockmap create_update_free"))
@@ -301,4 +335,10 @@ void test_sockmap_basic(void)
test_sockmap_copy(BPF_MAP_TYPE_SOCKMAP);
if (test__start_subtest("sockhash copy"))
test_sockmap_copy(BPF_MAP_TYPE_SOCKHASH);
if (test__start_subtest("sockmap skb_verdict attach")) {
test_sockmap_skb_verdict_attach(BPF_SK_SKB_VERDICT,
BPF_SK_SKB_STREAM_VERDICT);
test_sockmap_skb_verdict_attach(BPF_SK_SKB_STREAM_VERDICT,
BPF_SK_SKB_VERDICT);
}
}