CODEWITHSUNDEEP
linuxpathebpfxdp-bpf
Davide
Davide

Reputation: 55

Problems with linux-headers files PATH

I'm trying to run this eBPF program found in Internet:

#include <linux/bpf.h>
#include <linux/ptrace.h>
#include <linux/tcp.h>
#include <linux/inet.h>
#include <linux/ip.h>
#include <bpf/bpf_helpers.h>

SEC("filter/tcp_ingress")
int capture_tcp_packets(struct __sk_buff *skb) {
    struct ethhdr *eth = bpf_hdr_pointer(skb);
    struct iphdr *ip = (struct iphdr *)(eth + 1);

    if (ip->protocol == IPPROTO_TCP) {
        // You can add code here to log or process TCP packets.
        // E.g., extract source and destination IP addresses
    }
    return 0;
}
char _license[] SEC("license") = "GPL";

The problem is that when I try to compile with clang compiler, I get lots of fatal error relate to linux-headers:

<headers.h> not found

I tried to manually change the location of the headers.h file to make them available for the clang compiler (under the /usr/include path). Apparently it works, but since I have lots of types.h headers under my /usr/* folders and I don't know which one to copy, the result is the error:

unknown type name unsigned_u64

Or something similar.

Upvotes: 0

Views: 46

Answers (0)

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