// 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"; bool seen_tc1; bool seen_tc2; 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; } SEC("tc/egress") int tc2(struct __sk_buff *skb) { seen_tc2 = true; return TCX_NEXT; } SEC("tc/egress") int tc3(struct __sk_buff *skb) { seen_tc3 = true; return TCX_NEXT; } SEC("tc/egress") int tc4(struct __sk_buff *skb) { seen_tc4 = true; return TCX_NEXT; } SEC("tc/egress") int tc5(struct __sk_buff *skb) { seen_tc5 = true; return TCX_PASS; } SEC("tc/egress") int tc6(struct __sk_buff *skb) { seen_tc6 = true; return TCX_PASS; }