| Message ID | 20200730125325.1869363-1-jakub@cloudflare.com |
|---|---|
| State | Accepted |
| Delegated to: | BPF Maintainers |
| Headers | show |
| Series | [bpf-next] selftests/bpf: Omit nodad flag when adding addresses to loopback | expand |
On Thu, Jul 30, 2020 at 5:53 AM Jakub Sitnicki <jakub@cloudflare.com> wrote: > > Setting IFA_F_NODAD flag for IPv6 addresses to add to loopback is > unnecessary. Duplicate Address Detection does not happen on loopback > device. > > Also, passing 'nodad' flag to 'ip address' breaks libbpf CI, which runs in > an environment with BusyBox implementation of 'ip' command, that doesn't > understand this flag. > > Fixes: 0ab5539f8584 ("selftests/bpf: Tests for BPF_SK_LOOKUP attach point") > Reported-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> > Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> > --- This fixes the nodad issue, thanks for quick fix! Tested-by: Andrii Nakryiko <andrii@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> But now I see these, which seems like you have a separate fix for, right? (network_helpers.c:112: errno: Cannot assign requested address) Failed to connect to server run_lookup_test:FAIL:connect_fd_to_fd unexpected result err -1 errno 99 #14 cgroup_skb_sk_lookup:FAIL udp_recv_send:FAIL:recvmsg failed (/data/users/andriin/linux/tools/testing/selftests/bpf/prog_tests/sk_lookup.c:339: errno: Resource temporarily unavailable) failed to receive #73/14 UDP IPv4 redir and reuseport with conns:FAIL > tools/testing/selftests/bpf/prog_tests/sk_lookup.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c > index 9bbd2b2b7630..379da6f10ee9 100644 > --- a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c > +++ b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c > @@ -1290,8 +1290,8 @@ static void run_tests(struct test_sk_lookup *skel) > static int switch_netns(void) > { > static const char * const setup_script[] = { > - "ip -6 addr add dev lo " EXT_IP6 "/128 nodad", > - "ip -6 addr add dev lo " INT_IP6 "/128 nodad", > + "ip -6 addr add dev lo " EXT_IP6 "/128", > + "ip -6 addr add dev lo " INT_IP6 "/128", > "ip link set dev lo up", > NULL, > }; > -- > 2.25.4 >
On 7/30/20 2:53 PM, Jakub Sitnicki wrote: > Setting IFA_F_NODAD flag for IPv6 addresses to add to loopback is > unnecessary. Duplicate Address Detection does not happen on loopback > device. > > Also, passing 'nodad' flag to 'ip address' breaks libbpf CI, which runs in > an environment with BusyBox implementation of 'ip' command, that doesn't > understand this flag. > > Fixes: 0ab5539f8584 ("selftests/bpf: Tests for BPF_SK_LOOKUP attach point") > Reported-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> > Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Applied, thanks!
diff --git a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c index 9bbd2b2b7630..379da6f10ee9 100644 --- a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c +++ b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c @@ -1290,8 +1290,8 @@ static void run_tests(struct test_sk_lookup *skel) static int switch_netns(void) { static const char * const setup_script[] = { - "ip -6 addr add dev lo " EXT_IP6 "/128 nodad", - "ip -6 addr add dev lo " INT_IP6 "/128 nodad", + "ip -6 addr add dev lo " EXT_IP6 "/128", + "ip -6 addr add dev lo " INT_IP6 "/128", "ip link set dev lo up", NULL, };
Setting IFA_F_NODAD flag for IPv6 addresses to add to loopback is unnecessary. Duplicate Address Detection does not happen on loopback device. Also, passing 'nodad' flag to 'ip address' breaks libbpf CI, which runs in an environment with BusyBox implementation of 'ip' command, that doesn't understand this flag. Fixes: 0ab5539f8584 ("selftests/bpf: Tests for BPF_SK_LOOKUP attach point") Reported-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> --- tools/testing/selftests/bpf/prog_tests/sk_lookup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)