| Message ID | 20201126164449.1745292-6-revest@google.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | BPF |
| Headers | show |
| Series | [bpf-next,v3,1/6] net: Remove the err argument from sock_from_file | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | warning | Series does not have a cover letter |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for bpf-next |
| netdev/subject_prefix | success | Link |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | warning | WARNING: From:/Signed-off-by: email address mismatch: 'From: Florent Revest <revest@chromium.org>' != 'Signed-off-by: Florent Revest <revest@google.com>' |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
| netdev/stable | success | Stable not CCed |
On 11/26/20 8:44 AM, Florent Revest wrote: > This extends the existing bpf_sk_storage_get test where a socket is > created and tagged with its creator's pid by a task_file iterator. > > A TCP iterator is now also used at the end of the test to negate the > values already stored in the local storage. The test therefore expects > -getpid() to be stored in the local storage. > > Signed-off-by: Florent Revest <revest@google.com> Ack with a minor comment below. Acked-by: Yonghong Song <yhs@fb.com> > --- > .../selftests/bpf/prog_tests/bpf_iter.c | 13 +++++++++++++ > .../progs/bpf_iter_bpf_sk_storage_helpers.c | 18 ++++++++++++++++++ > 2 files changed, 31 insertions(+) > > diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c > index 9336d0f18331..b8362147c9e3 100644 > --- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c > +++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c > @@ -978,6 +978,8 @@ static void test_bpf_sk_storage_delete(void) > /* This creates a socket and its local storage. It then runs a task_iter BPF > * program that replaces the existing socket local storage with the tgid of the > * only task owning a file descriptor to this socket, this process, prog_tests. > + * It then runs a tcp socket iterator that negates the value in the existing > + * socket local storage, the test verifies that the resulting value is -pid. > */ > static void test_bpf_sk_storage_get(void) > { > @@ -994,6 +996,10 @@ static void test_bpf_sk_storage_get(void) > if (CHECK(sock_fd < 0, "socket", "errno: %d\n", errno)) > goto out; > > + err = listen(sock_fd, 1); > + if (CHECK(err != 0, "listen", "errno: %d\n", errno)) > + goto out; > + > map_fd = bpf_map__fd(skel->maps.sk_stg_map); > > err = bpf_map_update_elem(map_fd, &sock_fd, &val, BPF_NOEXIST); > @@ -1007,6 +1013,13 @@ static void test_bpf_sk_storage_get(void) > "map value wasn't set correctly (expected %d, got %d, err=%d)\n", > getpid(), val, err); > > + do_dummy_read(skel->progs.negate_socket_local_storage); > + > + err = bpf_map_lookup_elem(map_fd, &sock_fd, &val); > + CHECK(err || val != -getpid(), "bpf_map_lookup_elem", > + "map value wasn't set correctly (expected %d, got %d, err=%d)\n", > + -getpid(), val, err); > + > close_socket: > close(sock_fd); > out: > diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c > index d7a7a802d172..b3f0cb139c55 100644 > --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c > +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c > @@ -46,3 +46,21 @@ int fill_socket_owner(struct bpf_iter__task_file *ctx) > return 0; > } > > +SEC("iter/tcp") > +int negate_socket_local_storage(struct bpf_iter__tcp *ctx) > +{ > + struct sock_common *sk_common = ctx->sk_common; > + int *sock_tgid; > + > + if (!sk_common) > + return 0; > + > + sock_tgid = bpf_sk_storage_get(&sk_stg_map, sk_common, 0, 0); > + if (!sock_tgid) > + return 0; > + > + *sock_tgid = -*sock_tgid; > + > + return 0; > +} > + extra empty line here. >
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c index 9336d0f18331..b8362147c9e3 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c @@ -978,6 +978,8 @@ static void test_bpf_sk_storage_delete(void) /* This creates a socket and its local storage. It then runs a task_iter BPF * program that replaces the existing socket local storage with the tgid of the * only task owning a file descriptor to this socket, this process, prog_tests. + * It then runs a tcp socket iterator that negates the value in the existing + * socket local storage, the test verifies that the resulting value is -pid. */ static void test_bpf_sk_storage_get(void) { @@ -994,6 +996,10 @@ static void test_bpf_sk_storage_get(void) if (CHECK(sock_fd < 0, "socket", "errno: %d\n", errno)) goto out; + err = listen(sock_fd, 1); + if (CHECK(err != 0, "listen", "errno: %d\n", errno)) + goto out; + map_fd = bpf_map__fd(skel->maps.sk_stg_map); err = bpf_map_update_elem(map_fd, &sock_fd, &val, BPF_NOEXIST); @@ -1007,6 +1013,13 @@ static void test_bpf_sk_storage_get(void) "map value wasn't set correctly (expected %d, got %d, err=%d)\n", getpid(), val, err); + do_dummy_read(skel->progs.negate_socket_local_storage); + + err = bpf_map_lookup_elem(map_fd, &sock_fd, &val); + CHECK(err || val != -getpid(), "bpf_map_lookup_elem", + "map value wasn't set correctly (expected %d, got %d, err=%d)\n", + -getpid(), val, err); + close_socket: close(sock_fd); out: diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c index d7a7a802d172..b3f0cb139c55 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c @@ -46,3 +46,21 @@ int fill_socket_owner(struct bpf_iter__task_file *ctx) return 0; } +SEC("iter/tcp") +int negate_socket_local_storage(struct bpf_iter__tcp *ctx) +{ + struct sock_common *sk_common = ctx->sk_common; + int *sock_tgid; + + if (!sk_common) + return 0; + + sock_tgid = bpf_sk_storage_get(&sk_stg_map, sk_common, 0, 0); + if (!sock_tgid) + return 0; + + *sock_tgid = -*sock_tgid; + + return 0; +} +
This extends the existing bpf_sk_storage_get test where a socket is created and tagged with its creator's pid by a task_file iterator. A TCP iterator is now also used at the end of the test to negate the values already stored in the local storage. The test therefore expects -getpid() to be stored in the local storage. Signed-off-by: Florent Revest <revest@google.com> --- .../selftests/bpf/prog_tests/bpf_iter.c | 13 +++++++++++++ .../progs/bpf_iter_bpf_sk_storage_helpers.c | 18 ++++++++++++++++++ 2 files changed, 31 insertions(+)