selftests/bpf: fix xdp_redirect xdp-features selftest for veth driver

xdp-features supported by veth driver are no more static, but they
depends on veth configuration (e.g. if GRO is enabled/disabled or
TX/RX queue configuration). Take it into account in xdp_redirect
xdp-features selftest for veth driver.

Fixes: fccca038f300 ("veth: take into account device reconfiguration for xdp_features flag")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/bc35455cfbb1d4f7f52536955ded81ad47d8dc54.1680777371.git.lorenzo@kernel.org
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
index 7271a18..8251a0f 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
@@ -167,8 +167,7 @@ void test_xdp_do_redirect(void)
 
        if (!ASSERT_EQ(query_opts.feature_flags,
                       NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
-                      NETDEV_XDP_ACT_NDO_XMIT | NETDEV_XDP_ACT_RX_SG |
-                      NETDEV_XDP_ACT_NDO_XMIT_SG,
+                      NETDEV_XDP_ACT_RX_SG,
                       "veth_src query_opts.feature_flags"))
                goto out;
 
@@ -178,9 +177,34 @@ void test_xdp_do_redirect(void)
 
        if (!ASSERT_EQ(query_opts.feature_flags,
                       NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
+                      NETDEV_XDP_ACT_RX_SG,
+                      "veth_dst query_opts.feature_flags"))
+               goto out;
+
+       /* Enable GRO */
+       SYS("ethtool -K veth_src gro on");
+       SYS("ethtool -K veth_dst gro on");
+
+       err = bpf_xdp_query(ifindex_src, XDP_FLAGS_DRV_MODE, &query_opts);
+       if (!ASSERT_OK(err, "veth_src bpf_xdp_query gro on"))
+               goto out;
+
+       if (!ASSERT_EQ(query_opts.feature_flags,
+                      NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
                       NETDEV_XDP_ACT_NDO_XMIT | NETDEV_XDP_ACT_RX_SG |
                       NETDEV_XDP_ACT_NDO_XMIT_SG,
-                      "veth_dst query_opts.feature_flags"))
+                      "veth_src query_opts.feature_flags gro on"))
+               goto out;
+
+       err = bpf_xdp_query(ifindex_dst, XDP_FLAGS_DRV_MODE, &query_opts);
+       if (!ASSERT_OK(err, "veth_dst bpf_xdp_query gro on"))
+               goto out;
+
+       if (!ASSERT_EQ(query_opts.feature_flags,
+                      NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
+                      NETDEV_XDP_ACT_NDO_XMIT | NETDEV_XDP_ACT_RX_SG |
+                      NETDEV_XDP_ACT_NDO_XMIT_SG,
+                      "veth_dst query_opts.feature_flags gro on"))
                goto out;
 
        memcpy(skel->rodata->expect_dst, &pkt_udp.eth.h_dest, ETH_ALEN);