From: "Bastien Curutchet (eBPF Foundation)" <bastien.curutchet@bootlin.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@fomichev.me>,
Hao Luo <haoluo@google.com>, Jiri Olsa <jolsa@kernel.org>,
Mykola Lysenko <mykolal@fb.com>, Shuah Khan <shuah@kernel.org>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Alexis Lothore <alexis.lothore@bootlin.com>,
bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Bastien Curutchet (eBPF Foundation)"
<bastien.curutchet@bootlin.com>
Subject: [PATCH bpf-next v2 01/10] selftests/bpf: test_tunnel: Add generic_attach* helpers
Date: Mon, 03 Mar 2025 09:22:49 +0100 [thread overview]
Message-ID: <20250303-tunnels-v2-1-8329f38f0678@bootlin.com> (raw)
In-Reply-To: <20250303-tunnels-v2-0-8329f38f0678@bootlin.com>
A fair amount of code duplication is present among tests to attach BPF
programs.
Create generic_attach* helpers that attach BPF programs to a given
interface.
Use ASSERT_OK_FD() instead of ASSERT_GE() to check fd's validity.
Use these helpers in all the available tests.
Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
---
Changes in v2:
- Move tc_hook definition to attach_tc_prog()
---
.../testing/selftests/bpf/prog_tests/test_tunnel.c | 140 ++++++++++-----------
1 file changed, 66 insertions(+), 74 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
index cec746e77cd3abdf561cfc2422fa0a934fc481cd..cc03a4440182cfff94f8421c3f5362aaf470086d 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
@@ -364,32 +364,34 @@ static int test_ping(int family, const char *addr)
return -1;
}
-static int attach_tc_prog(struct bpf_tc_hook *hook, int igr_fd, int egr_fd)
+static int attach_tc_prog(int ifindex, int igr_fd, int egr_fd)
{
+ DECLARE_LIBBPF_OPTS(bpf_tc_hook, hook, .ifindex = ifindex,
+ .attach_point = BPF_TC_INGRESS | BPF_TC_EGRESS);
DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts1, .handle = 1,
.priority = 1, .prog_fd = igr_fd);
DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts2, .handle = 1,
.priority = 1, .prog_fd = egr_fd);
int ret;
- ret = bpf_tc_hook_create(hook);
+ ret = bpf_tc_hook_create(&hook);
if (!ASSERT_OK(ret, "create tc hook"))
return ret;
if (igr_fd >= 0) {
- hook->attach_point = BPF_TC_INGRESS;
- ret = bpf_tc_attach(hook, &opts1);
+ hook.attach_point = BPF_TC_INGRESS;
+ ret = bpf_tc_attach(&hook, &opts1);
if (!ASSERT_OK(ret, "bpf_tc_attach")) {
- bpf_tc_hook_destroy(hook);
+ bpf_tc_hook_destroy(&hook);
return ret;
}
}
if (egr_fd >= 0) {
- hook->attach_point = BPF_TC_EGRESS;
- ret = bpf_tc_attach(hook, &opts2);
+ hook.attach_point = BPF_TC_EGRESS;
+ ret = bpf_tc_attach(&hook, &opts2);
if (!ASSERT_OK(ret, "bpf_tc_attach")) {
- bpf_tc_hook_destroy(hook);
+ bpf_tc_hook_destroy(&hook);
return ret;
}
}
@@ -397,6 +399,50 @@ static int attach_tc_prog(struct bpf_tc_hook *hook, int igr_fd, int egr_fd)
return 0;
}
+static int generic_attach(const char *dev, int igr_fd, int egr_fd)
+{
+ int ifindex;
+
+ if (!ASSERT_OK_FD(igr_fd, "check ingress fd"))
+ return -1;
+ if (!ASSERT_OK_FD(egr_fd, "check egress fd"))
+ return -1;
+
+ ifindex = if_nametoindex(dev);
+ if (!ASSERT_NEQ(ifindex, 0, "get ifindex"))
+ return -1;
+
+ return attach_tc_prog(ifindex, igr_fd, egr_fd);
+}
+
+static int generic_attach_igr(const char *dev, int igr_fd)
+{
+ int ifindex;
+
+ if (!ASSERT_OK_FD(igr_fd, "check ingress fd"))
+ return -1;
+
+ ifindex = if_nametoindex(dev);
+ if (!ASSERT_NEQ(ifindex, 0, "get ifindex"))
+ return -1;
+
+ return attach_tc_prog(ifindex, igr_fd, -1);
+}
+
+static int generic_attach_egr(const char *dev, int egr_fd)
+{
+ int ifindex;
+
+ if (!ASSERT_OK_FD(egr_fd, "check egress fd"))
+ return -1;
+
+ ifindex = if_nametoindex(dev);
+ if (!ASSERT_NEQ(ifindex, 0, "get ifindex"))
+ return -1;
+
+ return attach_tc_prog(ifindex, -1, egr_fd);
+}
+
static void test_vxlan_tunnel(void)
{
struct test_tunnel_kern *skel = NULL;
@@ -404,11 +450,9 @@ static void test_vxlan_tunnel(void)
int local_ip_map_fd = -1;
int set_src_prog_fd, get_src_prog_fd;
int set_dst_prog_fd;
- int key = 0, ifindex = -1;
+ int key = 0;
uint local_ip;
int err;
- DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
- .attach_point = BPF_TC_INGRESS);
/* add vxlan tunnel */
err = add_vxlan_tunnel();
@@ -419,42 +463,22 @@ static void test_vxlan_tunnel(void)
skel = test_tunnel_kern__open_and_load();
if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
goto done;
- ifindex = if_nametoindex(VXLAN_TUNL_DEV1);
- if (!ASSERT_NEQ(ifindex, 0, "vxlan11 ifindex"))
- goto done;
- tc_hook.ifindex = ifindex;
get_src_prog_fd = bpf_program__fd(skel->progs.vxlan_get_tunnel_src);
set_src_prog_fd = bpf_program__fd(skel->progs.vxlan_set_tunnel_src);
- if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
+ if (generic_attach(VXLAN_TUNL_DEV1, get_src_prog_fd, set_src_prog_fd))
goto done;
/* load and attach bpf prog to veth dev tc hook point */
- ifindex = if_nametoindex("veth1");
- if (!ASSERT_NEQ(ifindex, 0, "veth1 ifindex"))
- goto done;
- tc_hook.ifindex = ifindex;
set_dst_prog_fd = bpf_program__fd(skel->progs.veth_set_outer_dst);
- if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, set_dst_prog_fd, -1))
+ if (generic_attach_igr("veth1", set_dst_prog_fd))
goto done;
/* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
nstoken = open_netns("at_ns0");
if (!ASSERT_OK_PTR(nstoken, "setns src"))
goto done;
- ifindex = if_nametoindex(VXLAN_TUNL_DEV0);
- if (!ASSERT_NEQ(ifindex, 0, "vxlan00 ifindex"))
- goto done;
- tc_hook.ifindex = ifindex;
set_dst_prog_fd = bpf_program__fd(skel->progs.vxlan_set_tunnel_dst);
- if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, -1, set_dst_prog_fd))
+ if (generic_attach_egr(VXLAN_TUNL_DEV0, set_dst_prog_fd))
goto done;
close_netns(nstoken);
@@ -488,11 +512,9 @@ static void test_ip6vxlan_tunnel(void)
int local_ip_map_fd = -1;
int set_src_prog_fd, get_src_prog_fd;
int set_dst_prog_fd;
- int key = 0, ifindex = -1;
+ int key = 0;
uint local_ip;
int err;
- DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
- .attach_point = BPF_TC_INGRESS);
/* add vxlan tunnel */
err = add_ip6vxlan_tunnel();
@@ -503,31 +525,17 @@ static void test_ip6vxlan_tunnel(void)
skel = test_tunnel_kern__open_and_load();
if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
goto done;
- ifindex = if_nametoindex(IP6VXLAN_TUNL_DEV1);
- if (!ASSERT_NEQ(ifindex, 0, "ip6vxlan11 ifindex"))
- goto done;
- tc_hook.ifindex = ifindex;
get_src_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_get_tunnel_src);
set_src_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_set_tunnel_src);
- if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
+ if (generic_attach(IP6VXLAN_TUNL_DEV1, get_src_prog_fd, set_src_prog_fd))
goto done;
/* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
nstoken = open_netns("at_ns0");
if (!ASSERT_OK_PTR(nstoken, "setns src"))
goto done;
- ifindex = if_nametoindex(IP6VXLAN_TUNL_DEV0);
- if (!ASSERT_NEQ(ifindex, 0, "ip6vxlan00 ifindex"))
- goto done;
- tc_hook.ifindex = ifindex;
set_dst_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_set_tunnel_dst);
- if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, -1, set_dst_prog_fd))
+ if (generic_attach_egr(IP6VXLAN_TUNL_DEV0, set_dst_prog_fd))
goto done;
close_netns(nstoken);
@@ -559,10 +567,7 @@ static void test_ipip_tunnel(enum ipip_encap encap)
struct test_tunnel_kern *skel = NULL;
struct nstoken *nstoken;
int set_src_prog_fd, get_src_prog_fd;
- int ifindex = -1;
int err;
- DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
- .attach_point = BPF_TC_INGRESS);
/* add ipip tunnel */
err = add_ipip_tunnel(encap);
@@ -573,10 +578,6 @@ static void test_ipip_tunnel(enum ipip_encap encap)
skel = test_tunnel_kern__open_and_load();
if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
goto done;
- ifindex = if_nametoindex(IPIP_TUNL_DEV1);
- if (!ASSERT_NEQ(ifindex, 0, "ipip11 ifindex"))
- goto done;
- tc_hook.ifindex = ifindex;
switch (encap) {
case FOU:
@@ -598,11 +599,7 @@ static void test_ipip_tunnel(enum ipip_encap encap)
skel->progs.ipip_set_tunnel);
}
- if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
+ if (generic_attach(IPIP_TUNL_DEV1, get_src_prog_fd, set_src_prog_fd))
goto done;
/* ping from root namespace test */
@@ -628,8 +625,6 @@ static void test_ipip_tunnel(enum ipip_encap encap)
static void test_xfrm_tunnel(void)
{
- DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
- .attach_point = BPF_TC_INGRESS);
LIBBPF_OPTS(bpf_xdp_attach_opts, opts);
struct test_tunnel_kern *skel = NULL;
struct nstoken *nstoken;
@@ -646,19 +641,16 @@ static void test_xfrm_tunnel(void)
if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
goto done;
- ifindex = if_nametoindex("veth1");
- if (!ASSERT_NEQ(ifindex, 0, "veth1 ifindex"))
- goto done;
/* attach tc prog to tunnel dev */
- tc_hook.ifindex = ifindex;
tc_prog_fd = bpf_program__fd(skel->progs.xfrm_get_state);
- if (!ASSERT_GE(tc_prog_fd, 0, "bpf_program__fd"))
- goto done;
- if (attach_tc_prog(&tc_hook, tc_prog_fd, -1))
+ if (generic_attach_igr("veth1", tc_prog_fd))
goto done;
/* attach xdp prog to tunnel dev */
+ ifindex = if_nametoindex("veth1");
+ if (!ASSERT_NEQ(ifindex, 0, "veth1 ifindex"))
+ goto done;
xdp_prog_fd = bpf_program__fd(skel->progs.xfrm_get_state_xdp);
if (!ASSERT_GE(xdp_prog_fd, 0, "bpf_program__fd"))
goto done;
--
2.48.1
next prev parent reply other threads:[~2025-03-03 8:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-03 8:22 [PATCH bpf-next v2 00/10] selftests/bpf: Migrate test_tunnel.sh to test_progs Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` Bastien Curutchet (eBPF Foundation) [this message]
2025-03-03 15:47 ` [PATCH bpf-next v2 01/10] selftests/bpf: test_tunnel: Add generic_attach* helpers Stanislav Fomichev
2025-03-03 8:22 ` [PATCH bpf-next v2 02/10] selftests/bpf: test_tunnel: Add ping helpers Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 03/10] selftests/bpf: test_tunnel: Move gre tunnel test to test_progs Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 04/10] selftests/bpf: test_tunnel: Move ip6gre " Bastien Curutchet (eBPF Foundation)
2025-03-03 15:47 ` Stanislav Fomichev
2025-03-03 8:22 ` [PATCH bpf-next v2 05/10] selftests/bpf: test_tunnel: Move erspan tunnel tests " Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 06/10] selftests/bpf: test_tunnel: Move ip6erspan tunnel test " Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 07/10] selftests/bpf: test_tunnel: Move geneve " Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 08/10] selftests/bpf: test_tunnel: Move ip6geneve " Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 09/10] selftests/bpf: test_tunnel: Move ip6tnl tunnel tests " Bastien Curutchet (eBPF Foundation)
2025-03-03 8:22 ` [PATCH bpf-next v2 10/10] selftests/bpf: test_tunnel: Remove test_tunnel.sh Bastien Curutchet (eBPF Foundation)
2025-03-03 22:30 ` [PATCH bpf-next v2 00/10] selftests/bpf: Migrate test_tunnel.sh to test_progs patchwork-bot+netdevbpf
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