From: Martin KaFai Lau <martin.lau@linux.dev>
To: YiFei Zhu <zhuyifei@google.com>, bpf@vger.kernel.org
Cc: netdev@vger.kernel.org, Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Stanislav Fomichev <sdf@google.com>,
John Fastabend <john.fastabend@gmail.com>,
Jiri Olsa <jolsa@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
David Ahern <dsahern@kernel.org>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Subject: Re: [PATCH v3 bpf-next 3/3] selftests/bpf: Ensure cgroup/connect{4,6} programs can bind unpriv ICMP ping
Date: Thu, 8 Sep 2022 16:32:39 -0700 [thread overview]
Message-ID: <e1648c86-7859-a7c8-4474-83c826cbb464@linux.dev> (raw)
In-Reply-To: <97288b66a44c984cb5514ca7390ca0cf9c30275f.1662678623.git.zhuyifei@google.com>
On 9/8/22 4:16 PM, YiFei Zhu wrote:
> +void test_connect_ping(void)
> +{
> + struct connect_ping *skel;
> + int cgroup_fd;
> +
> + if (!ASSERT_OK(unshare(CLONE_NEWNET | CLONE_NEWNS), "unshare"))
> + return;
> +
> + /* overmount sysfs, and making original sysfs private so overmount
> + * does not propagate to other mntns.
> + */
> + if (!ASSERT_OK(mount("none", "/sys", NULL, MS_PRIVATE, NULL),
> + "remount-private-sys"))
> + return;
> + if (!ASSERT_OK(mount("sysfs", "/sys", "sysfs", 0, NULL),
> + "mount-sys"))
> + return;
> + if (!ASSERT_OK(mount("bpffs", "/sys/fs/bpf", "bpf", 0, NULL),
> + "mount-bpf"))
> + goto clean_mount;
> +
> + if (!ASSERT_OK(system("ip link set dev lo up"), "lo-up"))
> + goto clean_mount;
> + if (!ASSERT_OK(system("ip addr add 1.1.1.1 dev lo"), "lo-addr-v4"))
> + goto clean_mount;
> + if (!ASSERT_OK(system("ip -6 addr add 2001:db8::1 dev lo"), "lo-addr-v6"))
> + goto clean_mount;
> + if (write_sysctl("/proc/sys/net/ipv4/ping_group_range", "0 0"))
> + goto clean_mount;
> +
> + cgroup_fd = test__join_cgroup("/connect_ping");
> + if (!ASSERT_GE(cgroup_fd, 0, "cg-create"))
> + goto clean_mount;
> +
> + skel = connect_ping__open_and_load();
> + if (!ASSERT_OK_PTR(skel, "skel-load"))
> + goto close_cgroup;
> + skel->links.connect_v4_prog =
> + bpf_program__attach_cgroup(skel->progs.connect_v4_prog, cgroup_fd);
> + if (!ASSERT_OK_PTR(skel->links.connect_v4_prog, "cg-attach-v4"))
> + goto close_cgroup;
connect_ping__destroy() is also needed in this error path.
I had already mentioned that in v2. I went back to v2 and noticed my
editor some how merged my reply with the previous quoted line ">". A
similar thing happened in my recent replies also. I hope it appears
fine this time.
> + skel->links.connect_v6_prog =
> + bpf_program__attach_cgroup(skel->progs.connect_v6_prog, cgroup_fd);
> + if (!ASSERT_OK_PTR(skel->links.connect_v6_prog, "cg-attach-v6"))
> + goto close_cgroup;
Same here.
next prev parent reply other threads:[~2022-09-08 23:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-08 23:16 [PATCH v3 bpf-next 0/3] cgroup/connect{4,6} programs for unprivileged ICMP ping YiFei Zhu
2022-09-08 23:16 ` [PATCH v3 bpf-next 1/3] bpf: Invoke " YiFei Zhu
2022-09-08 23:16 ` [PATCH v3 bpf-next 2/3] selftests/bpf: Deduplicate write_sysctl() to test_progs.c YiFei Zhu
2022-09-08 23:16 ` [PATCH v3 bpf-next 3/3] selftests/bpf: Ensure cgroup/connect{4,6} programs can bind unpriv ICMP ping YiFei Zhu
2022-09-08 23:32 ` Martin KaFai Lau [this message]
2022-09-08 23:44 ` YiFei Zhu
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