| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | |
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| 3 | #include <linux/bpf.h> |
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| 4 | #include <bpf/bpf_helpers.h> |
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| 5 | #include <linux/if_ether.h> |
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| 6 | #include <linux/ip.h> |
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| 7 | |
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| 8 | /* Dummy prog to test TC-BPF API */ |
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| 9 | |
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| 10 | SEC("tc" ) |
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| 11 | int cls(struct __sk_buff *skb) |
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| 12 | { |
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| 13 | return 0; |
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| 14 | } |
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| 15 | |
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| 16 | /* Prog to verify tc-bpf without cap_sys_admin and cap_perfmon */ |
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| 17 | SEC("tcx/ingress" ) |
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| 18 | int pkt_ptr(struct __sk_buff *skb) |
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| 19 | { |
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| 20 | struct iphdr *iph = (void *)(long)skb->data + sizeof(struct ethhdr); |
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| 21 | |
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| 22 | if ((long)(iph + 1) > (long)skb->data_end) |
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| 23 | return 1; |
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| 24 | return 0; |
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| 25 | } |
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| 26 | |
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