C++ (Cpp) proto_hdr_field_set_default_dev_ipv4示例

示例#1

static void arp_header_init(struct proto_hdr *hdr)
{
	struct proto_hdr *lower = proto_lower_default_add(hdr, PROTO_ETH);

	if (lower->ops->id == PROTO_ETH) {
		const uint8_t bcast[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

		proto_hdr_field_set_default_bytes(lower, ETH_DST_ADDR, bcast);
	}

	proto_header_fields_add(hdr, arp_fields, array_size(arp_fields));

	/* Generate Announce request by default */
	proto_hdr_field_set_default_be16(hdr, ARP_HTYPE, ARPHRD_ETHER);
	proto_hdr_field_set_default_be16(hdr, ARP_PTYPE, ETH_P_IP);
	proto_hdr_field_set_default_u8(hdr, ARP_HLEN, 6);
	proto_hdr_field_set_default_u8(hdr, ARP_PLEN, 4);
	proto_hdr_field_set_default_be16(hdr, ARP_OPER, ARPOP_REQUEST);
	proto_hdr_field_set_default_dev_mac(hdr, ARP_SHA);
	proto_hdr_field_set_default_dev_ipv4(hdr, ARP_SPA);
	proto_hdr_field_set_default_dev_ipv4(hdr, ARP_TPA);
}

示例#2

文件： trafgen_l3.c 项目： markusa/netsniff-ng

static void ipv4_header_init(struct proto_hdr *hdr)
{
	struct dev_io *dev = proto_dev_get();

	/* In case of tun interface we do not need to create Ethernet header */
	if (!dev_io_is_netdev(dev) || device_type(dev_io_name_get(dev)) != ARPHRD_NONE)
		proto_lower_default_add(hdr, PROTO_ETH);

	proto_header_fields_add(hdr, ipv4_fields, array_size(ipv4_fields));

	proto_hdr_field_set_default_u8(hdr, IP4_VER, 4);
	proto_hdr_field_set_default_u8(hdr, IP4_IHL, 5);
	proto_hdr_field_set_default_dev_ipv4(hdr, IP4_SADDR);
}