C++ (Cpp) build_ipv4_frag_off_field Examples

Example #1

File: packet_test.c Project: magg/NAT64

static bool test_function_build_ipv4_frag_off_field(void)
{
	bool success = true;

	success &= assert_equals_u16(0x400F, be16_to_cpu(build_ipv4_frag_off_field(1, 0, 120)),
			"Simple 1");
	success &= assert_equals_u16(0x202B, be16_to_cpu(build_ipv4_frag_off_field(0, 1, 344)),
			"Simple 2");

	return success;
}

Example #2

File: skb_generator.c Project: pandax381/NAT64

int init_ipv4_hdr(void *l3_hdr, u16 payload_len, u8 nexthdr, struct tuple *tuple4,
                  bool df, bool mf, u16 frag_offset, u8 ttl)
{
    struct iphdr *hdr = l3_hdr;

    hdr->version = 4;
    hdr->ihl = 5;
    hdr->tos = 0;
    hdr->tot_len = cpu_to_be16(sizeof(*hdr) + payload_len);
    hdr->id = (frag_offset != 0 || mf) ? cpu_to_be16(4321) : 0;
    hdr->frag_off = build_ipv4_frag_off_field(df, mf, frag_offset);
    hdr->ttl = ttl;
    hdr->protocol = nexthdr;
    hdr->saddr = tuple4->src.addr4.l3.s_addr;
    hdr->daddr = tuple4->dst.addr4.l3.s_addr;

    hdr->check = 0;
    hdr->check = ip_fast_csum(hdr, hdr->ihl);

    return 0;
}