does anyone know how to do crc32 on ipv6hdr->saddr?

[kolinfluence]

does anyone know how to do crc32 on ipv6hdr->saddr?
i cant convert ipv6hdr->saddr to something crc32 can digest. how shld i do this?

tcphdr->dest = bpf_htons(80 + (ipv6hdr->saddr % nr_cpus));

	if (eth_type == bpf_htons(ETH_P_IP)) {
		ip_type = parse_iphdr(&nh, data_end, &iphdr);

				tcphdr->dest = bpf_htons(80 + (iphdr->saddr % nr_cpus));

	} else if (eth_type == bpf_htons(ETH_P_IPV6)) {
		
		ip_type = parse_ip6hdr(&nh, data_end, &ipv6hdr);

		//tcphdr->dest = bpf_htons(80 + (ipv6hdr->saddr % nr_cpus));

	}

[lmb]

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