diff options
author | Larysa Zaremba <larysa.zaremba@intel.com> | 2023-12-06 00:08:47 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2023-12-14 03:16:41 +0300 |
commit | 4c6612f6100c2d85212865dbd1a5d8a7e391d3cb (patch) | |
tree | 69dbb3887b907d62888bd4cad1781053d55ddd3c | |
parent | a3850af4ea25dadc8b35edf132340907d523657e (diff) | |
download | linux-4c6612f6100c2d85212865dbd1a5d8a7e391d3cb.tar.xz |
selftests/bpf: Check VLAN tag and proto in xdp_metadata
Verify, whether VLAN tag and proto are set correctly.
To simulate "stripped" VLAN tag on veth, send test packet from VLAN
interface.
Also, add TO_STR() macro for convenience.
Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20231205210847.28460-19-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/xdp_metadata.c | 20 | ||||
-rw-r--r-- | tools/testing/selftests/bpf/progs/xdp_metadata.c | 5 | ||||
-rw-r--r-- | tools/testing/selftests/bpf/testing_helpers.h | 3 |
3 files changed, 26 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c b/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c index e7f06cbdd845..05edcf32f528 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c @@ -38,7 +38,13 @@ #define TX_MAC "00:00:00:00:00:01" #define RX_MAC "00:00:00:00:00:02" +#define VLAN_ID 59 +#define VLAN_PROTO "802.1Q" +#define VLAN_PID htons(ETH_P_8021Q) +#define TX_NAME_VLAN TX_NAME "." TO_STR(VLAN_ID) + #define XDP_RSS_TYPE_L4 BIT(3) +#define VLAN_VID_MASK 0xfff struct xsk { void *umem_area; @@ -323,6 +329,12 @@ static int verify_xsk_metadata(struct xsk *xsk, bool sent_from_af_xdp) if (!sent_from_af_xdp) { if (!ASSERT_NEQ(meta->rx_hash_type & XDP_RSS_TYPE_L4, 0, "rx_hash_type")) return -1; + + if (!ASSERT_EQ(meta->rx_vlan_tci & VLAN_VID_MASK, VLAN_ID, "rx_vlan_tci")) + return -1; + + if (!ASSERT_EQ(meta->rx_vlan_proto, VLAN_PID, "rx_vlan_proto")) + return -1; goto done; } @@ -378,10 +390,14 @@ void test_xdp_metadata(void) SYS(out, "ip link set dev " TX_NAME " address " TX_MAC); SYS(out, "ip link set dev " TX_NAME " up"); - SYS(out, "ip addr add " TX_ADDR "/" PREFIX_LEN " dev " TX_NAME); + + SYS(out, "ip link add link " TX_NAME " " TX_NAME_VLAN + " type vlan proto " VLAN_PROTO " id " TO_STR(VLAN_ID)); + SYS(out, "ip link set dev " TX_NAME_VLAN " up"); + SYS(out, "ip addr add " TX_ADDR "/" PREFIX_LEN " dev " TX_NAME_VLAN); /* Avoid ARP calls */ - SYS(out, "ip -4 neigh add " RX_ADDR " lladdr " RX_MAC " dev " TX_NAME); + SYS(out, "ip -4 neigh add " RX_ADDR " lladdr " RX_MAC " dev " TX_NAME_VLAN); switch_ns_to_rx(&tok); diff --git a/tools/testing/selftests/bpf/progs/xdp_metadata.c b/tools/testing/selftests/bpf/progs/xdp_metadata.c index 5d6c1245c310..31ca229bb3c0 100644 --- a/tools/testing/selftests/bpf/progs/xdp_metadata.c +++ b/tools/testing/selftests/bpf/progs/xdp_metadata.c @@ -23,6 +23,9 @@ extern int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, __u64 *timestamp) __ksym; extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, __u32 *hash, enum xdp_rss_hash_type *rss_type) __ksym; +extern int bpf_xdp_metadata_rx_vlan_tag(const struct xdp_md *ctx, + __be16 *vlan_proto, + __u16 *vlan_tci) __ksym; SEC("xdp") int rx(struct xdp_md *ctx) @@ -86,6 +89,8 @@ int rx(struct xdp_md *ctx) meta->rx_timestamp = 1; bpf_xdp_metadata_rx_hash(ctx, &meta->rx_hash, &meta->rx_hash_type); + bpf_xdp_metadata_rx_vlan_tag(ctx, &meta->rx_vlan_proto, + &meta->rx_vlan_tci); return bpf_redirect_map(&xsk, ctx->rx_queue_index, XDP_PASS); } diff --git a/tools/testing/selftests/bpf/testing_helpers.h b/tools/testing/selftests/bpf/testing_helpers.h index 5b7a55136741..35284faff4f2 100644 --- a/tools/testing/selftests/bpf/testing_helpers.h +++ b/tools/testing/selftests/bpf/testing_helpers.h @@ -9,6 +9,9 @@ #include <bpf/libbpf.h> #include <time.h> +#define __TO_STR(x) #x +#define TO_STR(x) __TO_STR(x) + int parse_num_list(const char *s, bool **set, int *set_len); __u32 link_info_prog_id(const struct bpf_link *link, struct bpf_link_info *info); int bpf_prog_test_load(const char *file, enum bpf_prog_type type, |