From: Andrii Nakryiko <andrii.nakryiko@gmail.com>
To: David Ahern <dsahern@gmail.com>
Cc: "Alexei Starovoitov" <alexei.starovoitov@gmail.com>,
"David Ahern" <dsahern@kernel.org>,
"Network Development" <netdev@vger.kernel.org>,
bpf <bpf@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Jakub Kicinski" <kuba@kernel.org>,
"Jesper Dangaard Brouer" <brouer@redhat.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Lorenzo Bianconi" <lorenzo@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"John Fastabend" <john.fastabend@gmail.com>,
"Alexei Starovoitov" <ast@kernel.org>,
"Martin KaFai Lau" <kafai@fb.com>,
"Song Liu" <songliubraving@fb.com>, "Yonghong Song" <yhs@fb.com>,
"Andrii Nakryiko" <andriin@fb.com>
Subject: Re: [PATCH v4 bpf-next 0/5] bpf: Add support for XDP programs in DEVMAP entries
Date: Mon, 1 Jun 2020 15:52:05 -0700 [thread overview]
Message-ID: <CAEf4BzaYU7-JhjnStL_JWVtL1-8wuB1ZcJkxoN01_bbKvdyaqA@mail.gmail.com> (raw)
In-Reply-To: <ed66bdc6-4114-2ecf-1812-176d0250730b@gmail.com>
On Mon, Jun 1, 2020 at 3:28 PM David Ahern <dsahern@gmail.com> wrote:
>
> On 6/1/20 3:12 PM, Alexei Starovoitov wrote:
> > In patch 5 I had to fix:
> > /data/users/ast/net-next/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c:
> > In function ‘test_neg_xdp_devmap_helpers’:
> > /data/users/ast/net-next/tools/testing/selftests/bpf/test_progs.h:106:3:
> > warning: ‘duration’ may be used uninitialized in this function
> > [-Wmaybe-uninitialized]
> > 106 | fprintf(stdout, "%s:PASS:%s %d nsec\n", \
> > | ^~~~~~~
> > /data/users/ast/net-next/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c:79:8:
> > note: ‘duration’ was declared here
> > 79 | __u32 duration;
>
> What compiler version? it compiles cleanly with ubuntu 20.04 and gcc
> 9.3. The other prog_tests are inconsistent with initializing it.
Do you have specific examples of inconsistencies? Seems like duration is:
1. either static variable, and thus zero-initialized;
2. is initialized explicitly at declaration;
3. is filled out with bpf_prog_test_run().
>
> >
> > and that selftest is imo too primitive.
>
> I focused the selftests on API changes introduced by this set - new
> attach type, valid accesses to egress_ifindex and not allowing devmap
> programs with xdp generic.
>
> > It's only loading progs and not executing them.
> > Could you please add prog_test_run to it?
> >
>
> I will look into it.
next prev parent reply other threads:[~2020-06-01 22:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 22:07 [PATCH v4 bpf-next 0/5] bpf: Add support for XDP programs in DEVMAP entries David Ahern
2020-05-29 22:07 ` [PATCH v4 bpf-next 1/5] devmap: Formalize map value as a named struct David Ahern
2020-05-29 22:07 ` [PATCH v4 bpf-next 2/5] bpf: Add support to attach bpf program to a devmap entry David Ahern
2020-05-29 22:07 ` [PATCH v4 bpf-next 3/5] xdp: Add xdp_txq_info to xdp_buff David Ahern
2020-05-29 22:07 ` [PATCH v4 bpf-next 4/5] libbpf: Add SEC name for xdp programs attached to device map David Ahern
2020-05-29 22:07 ` [PATCH v4 bpf-next 5/5] selftest: Add tests for XDP programs in devmap entries David Ahern
2020-06-01 21:12 ` [PATCH v4 bpf-next 0/5] bpf: Add support for XDP programs in DEVMAP entries Alexei Starovoitov
2020-06-01 22:28 ` David Ahern
2020-06-01 22:31 ` Alexei Starovoitov
2020-06-01 22:52 ` Andrii Nakryiko [this message]
2020-06-02 3:00 ` David Ahern
2020-06-05 23:45 ` David Ahern
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