diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_tc_link.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_tc_link.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_tc_link.c b/tools/testing/selftests/bpf/progs/test_tc_link.c index 30e7124c4..992400acb 100644 --- a/tools/testing/selftests/bpf/progs/test_tc_link.c +++ b/tools/testing/selftests/bpf/progs/test_tc_link.c @@ -1,7 +1,11 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2023 Isovalent */ #include <stdbool.h> + #include <linux/bpf.h> +#include <linux/if_ether.h> + +#include <bpf/bpf_endian.h> #include <bpf/bpf_helpers.h> char LICENSE[] SEC("license") = "GPL"; @@ -12,10 +16,19 @@ bool seen_tc3; bool seen_tc4; bool seen_tc5; bool seen_tc6; +bool seen_eth; SEC("tc/ingress") int tc1(struct __sk_buff *skb) { + struct ethhdr eth = {}; + + if (skb->protocol != __bpf_constant_htons(ETH_P_IP)) + goto out; + if (bpf_skb_load_bytes(skb, 0, ð, sizeof(eth))) + goto out; + seen_eth = eth.h_proto == bpf_htons(ETH_P_IP); +out: seen_tc1 = true; return TCX_NEXT; } |