From: Martin KaFai Lau <martin.lau@linux.dev>
To: bpf@vger.kernel.org
Cc: 'Alexei Starovoitov ' <ast@kernel.org>,
'Andrii Nakryiko ' <andrii@kernel.org>,
'Daniel Borkmann ' <daniel@iogearbox.net>,
netdev@vger.kernel.org, kernel-team@meta.com
Subject: [PATCH bpf-next 3/7] selftests/bpf: Avoid pinning bpf prog in the tc_redirect_peer_l3 test
Date: Mon, 28 Nov 2022 23:08:56 -0800 [thread overview]
Message-ID: <20221129070900.3142427-4-martin.lau@linux.dev> (raw)
In-Reply-To: <20221129070900.3142427-1-martin.lau@linux.dev>
From: Martin KaFai Lau <martin.lau@kernel.org>
This patch removes the need to pin prog in the tc_redirect_peer_l3
test by directly using the bpf_tc_hook_create() and bpf_tc_attach().
The clsact qdisc will go away together with the test netns, so
no need to do bpf_tc_hook_destroy().
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
---
.../selftests/bpf/prog_tests/tc_redirect.c | 32 +++++++------------
1 file changed, 12 insertions(+), 20 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
index 690102f1ceda..cefde6491749 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
@@ -1032,6 +1032,8 @@ static int tun_relay_loop(int src_fd, int target_fd)
static void test_tc_redirect_peer_l3(struct netns_setup_result *setup_result)
{
+ LIBBPF_OPTS(bpf_tc_hook, qdisc_tun_fwd);
+ LIBBPF_OPTS(bpf_tc_hook, qdisc_veth_dst_fwd);
struct test_tc_peer *skel = NULL;
struct nstoken *nstoken = NULL;
int err;
@@ -1086,31 +1088,21 @@ static void test_tc_redirect_peer_l3(struct netns_setup_result *setup_result)
if (!ASSERT_OK(err, "test_tc_peer__load"))
goto fail;
- err = bpf_program__pin(skel->progs.tc_src_l3, SRC_PROG_PIN_FILE);
- if (!ASSERT_OK(err, "pin " SRC_PROG_PIN_FILE))
- goto fail;
-
- err = bpf_program__pin(skel->progs.tc_dst_l3, DST_PROG_PIN_FILE);
- if (!ASSERT_OK(err, "pin " DST_PROG_PIN_FILE))
- goto fail;
-
- err = bpf_program__pin(skel->progs.tc_chk, CHK_PROG_PIN_FILE);
- if (!ASSERT_OK(err, "pin " CHK_PROG_PIN_FILE))
- goto fail;
-
/* Load "tc_src_l3" to the tun_fwd interface to redirect packets
* towards dst, and "tc_dst" to redirect packets
* and "tc_chk" on veth_dst_fwd to drop non-redirected packets.
*/
- SYS("tc qdisc add dev tun_fwd clsact");
- SYS("tc filter add dev tun_fwd ingress bpf da object-pinned "
- SRC_PROG_PIN_FILE);
+ /* tc qdisc add dev tun_fwd clsact */
+ QDISC_CLSACT_CREATE(&qdisc_tun_fwd, ifindex);
+ /* tc filter add dev tun_fwd ingress bpf da tc_src_l3 */
+ XGRESS_FILTER_ADD(&qdisc_tun_fwd, BPF_TC_INGRESS, skel->progs.tc_src_l3, 0);
- SYS("tc qdisc add dev veth_dst_fwd clsact");
- SYS("tc filter add dev veth_dst_fwd ingress bpf da object-pinned "
- DST_PROG_PIN_FILE);
- SYS("tc filter add dev veth_dst_fwd egress bpf da object-pinned "
- CHK_PROG_PIN_FILE);
+ /* tc qdisc add dev veth_dst_fwd clsact */
+ QDISC_CLSACT_CREATE(&qdisc_veth_dst_fwd, setup_result->ifindex_veth_dst_fwd);
+ /* tc filter add dev veth_dst_fwd ingress bpf da tc_dst_l3 */
+ XGRESS_FILTER_ADD(&qdisc_veth_dst_fwd, BPF_TC_INGRESS, skel->progs.tc_dst_l3, 0);
+ /* tc filter add dev veth_dst_fwd egress bpf da tc_chk */
+ XGRESS_FILTER_ADD(&qdisc_veth_dst_fwd, BPF_TC_EGRESS, skel->progs.tc_chk, 0);
/* Setup route and neigh tables */
SYS("ip -netns " NS_SRC " addr add dev tun_src " IP4_TUN_SRC "/24");
--
2.30.2
next prev parent reply other threads:[~2022-11-29 7:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-29 7:08 [PATCH bpf-next 0/7] selftests/bpf: Remove unnecessary mount/umount dance Martin KaFai Lau
2022-11-29 7:08 ` [PATCH bpf-next 1/7] selftests/bpf: Use if_nametoindex instead of reading the /sys/net/class/*/ifindex Martin KaFai Lau
2022-11-29 7:08 ` [PATCH bpf-next 2/7] selftests/bpf: Avoid pinning bpf prog in the tc_redirect_dtime test Martin KaFai Lau
2022-11-29 7:08 ` Martin KaFai Lau [this message]
2022-11-29 7:08 ` [PATCH bpf-next 4/7] selftests/bpf: Avoid pinning bpf prog in the netns_load_bpf() callers Martin KaFai Lau
2022-11-29 7:08 ` [PATCH bpf-next 5/7] selftests/bpf: Remove the "/sys" mount and umount dance in {open,close}_netns Martin KaFai Lau
2022-11-29 7:08 ` [PATCH bpf-next 6/7] selftests/bpf: Remove serial from tests using {open,close}_netns Martin KaFai Lau
2022-11-29 7:09 ` [PATCH bpf-next 7/7] selftests/bpf: Avoid pinning prog when attaching to tc ingress in btf_skc_cls_ingress Martin KaFai Lau
2022-11-29 19:00 ` [PATCH bpf-next 0/7] selftests/bpf: Remove unnecessary mount/umount dance sdf
2022-11-30 22:00 ` patchwork-bot+netdevbpf
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