iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

selftests/bpf: Add xdp_feature selftest for bond device

Browse Source 
Introduce selftests to check xdp_feature support for bond driver.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jussi Maki <joamaki@gmail.com>
Link: https://lore.kernel.org/bpf/64cb8f20e6491f5b971f8d3129335093c359aad7.1684329998.git.lorenzo@kernel.org
This commit is contained in:
Lorenzo Bianconi 2023-05-17 15:41:33 +02:00 committed by Daniel Borkmann
parent 18f558876f
commit 6cc385d2cd
1 changed files with 121 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

121
tools/testing/selftests/bpf/prog_tests/xdp_bonding.c
View File

@ -18,6 +18,7 @@
#include <linux/if_bonding.h>
#include <linux/limits.h>
#include <linux/udp.h>
#include <uapi/linux/netdev.h>
#include "xdp_dummy.skel.h"
#include "xdp_redirect_multi_kern.skel.h"
@ -492,6 +493,123 @@ out:
system("ip link del bond_nest2");
}
static void test_xdp_bonding_features(struct skeletons *skeletons)
{
LIBBPF_OPTS(bpf_xdp_query_opts, query_opts);
int bond_idx, veth1_idx, err;
struct bpf_link *link = NULL;
if (!ASSERT_OK(system("ip link add bond type bond"), "add bond"))
goto out;
bond_idx = if_nametoindex("bond");
if (!ASSERT_GE(bond_idx, 0, "if_nametoindex bond"))
goto out;
/* query default xdp-feature for bond device */
err = bpf_xdp_query(bond_idx, XDP_FLAGS_DRV_MODE, &query_opts);
if (!ASSERT_OK(err, "bond bpf_xdp_query"))
goto out;
if (!ASSERT_EQ(query_opts.feature_flags, NETDEV_XDP_ACT_MASK,
"bond query_opts.feature_flags"))
goto out;
if (!ASSERT_OK(system("ip link add veth0 type veth peer name veth1"),
"add veth{0,1} pair"))
goto out;
if (!ASSERT_OK(system("ip link add veth2 type veth peer name veth3"),
"add veth{2,3} pair"))
goto out;
if (!ASSERT_OK(system("ip link set veth0 master bond"),
"add veth0 to master bond"))
goto out;
/* xdp-feature for bond device should be obtained from the single slave
* device (veth0)
*/
err = bpf_xdp_query(bond_idx, XDP_FLAGS_DRV_MODE, &query_opts);
if (!ASSERT_OK(err, "bond bpf_xdp_query"))
goto out;
if (!ASSERT_EQ(query_opts.feature_flags,
NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_RX_SG,
"bond query_opts.feature_flags"))
goto out;
veth1_idx = if_nametoindex("veth1");
if (!ASSERT_GE(veth1_idx, 0, "if_nametoindex veth1"))
goto out;
link = bpf_program__attach_xdp(skeletons->xdp_dummy->progs.xdp_dummy_prog,
veth1_idx);
if (!ASSERT_OK_PTR(link, "attach program to veth1"))
goto out;
/* xdp-feature for veth0 are changed */
err = bpf_xdp_query(bond_idx, XDP_FLAGS_DRV_MODE, &query_opts);
if (!ASSERT_OK(err, "bond bpf_xdp_query"))
goto out;
if (!ASSERT_EQ(query_opts.feature_flags,
NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_RX_SG | NETDEV_XDP_ACT_NDO_XMIT |
NETDEV_XDP_ACT_NDO_XMIT_SG,
"bond query_opts.feature_flags"))
goto out;
if (!ASSERT_OK(system("ip link set veth2 master bond"),
"add veth2 to master bond"))
goto out;
err = bpf_xdp_query(bond_idx, XDP_FLAGS_DRV_MODE, &query_opts);
if (!ASSERT_OK(err, "bond bpf_xdp_query"))
goto out;
/* xdp-feature for bond device should be set to the most restrict
* value obtained from attached slave devices (veth0 and veth2)
*/
if (!ASSERT_EQ(query_opts.feature_flags,
NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_RX_SG,
"bond query_opts.feature_flags"))
goto out;
if (!ASSERT_OK(system("ip link set veth2 nomaster"),
"del veth2 to master bond"))
goto out;
err = bpf_xdp_query(bond_idx, XDP_FLAGS_DRV_MODE, &query_opts);
if (!ASSERT_OK(err, "bond bpf_xdp_query"))
goto out;
if (!ASSERT_EQ(query_opts.feature_flags,
NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_RX_SG | NETDEV_XDP_ACT_NDO_XMIT |
NETDEV_XDP_ACT_NDO_XMIT_SG,
"bond query_opts.feature_flags"))
goto out;
if (!ASSERT_OK(system("ip link set veth0 nomaster"),
"del veth0 to master bond"))
goto out;
err = bpf_xdp_query(bond_idx, XDP_FLAGS_DRV_MODE, &query_opts);
if (!ASSERT_OK(err, "bond bpf_xdp_query"))
goto out;
ASSERT_EQ(query_opts.feature_flags, NETDEV_XDP_ACT_MASK,
"bond query_opts.feature_flags");
out:
bpf_link__destroy(link);
system("ip link del veth0");
system("ip link del veth2");
system("ip link del bond");
}
static int libbpf_debug_print(enum libbpf_print_level level,
const char *format, va_list args)
{
@ -546,6 +664,9 @@ void serial_test_xdp_bonding(void)
if (test__start_subtest("xdp_bonding_nested"))
test_xdp_bonding_nested(&skeletons);
if (test__start_subtest("xdp_bonding_features"))
test_xdp_bonding_features(&skeletons);
for (i = 0; i < ARRAY_SIZE(bond_test_cases); i++) {
struct bond_test_case *test_case = &bond_test_cases[i];