/*
 *  VAS_EBOOT  --  GRand Unified Bootloader
 *  Copyright (C) 2010,2011  Free Software Foundation, Inc.
 *
 *  VAS_EBOOT is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  VAS_EBOOT is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with VAS_EBOOT.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef VAS_EBOOT_NET_IP_HEADER
#define VAS_EBOOT_NET_IP_HEADER	1
#include <VasEBoot/misc.h>
#include <VasEBoot/net.h>

typedef enum VasEBoot_net_ip_protocol
  {
    VAS_EBOOT_NET_IP_ICMP = 1,
    VAS_EBOOT_NET_IP_TCP = 6,
    VAS_EBOOT_NET_IP_UDP = 17,
    VAS_EBOOT_NET_IP_ICMPV6 = 58
  } VasEBoot_net_ip_protocol_t;
#define VAS_EBOOT_NET_IP_BROADCAST    0xFFFFFFFF

static inline VasEBoot_uint64_t
VasEBoot_net_ipv6_get_id (const VasEBoot_net_link_level_address_t *addr)
{
  return VasEBoot_cpu_to_be64 (((VasEBoot_uint64_t) (addr->mac[0] ^ 2) << 56)
			   | ((VasEBoot_uint64_t) addr->mac[1] << 48)
			   | ((VasEBoot_uint64_t) addr->mac[2] << 40)
			   | 0xfffe000000ULL
			   | ((VasEBoot_uint64_t) addr->mac[3] << 16)
			   | ((VasEBoot_uint64_t) addr->mac[4] << 8)
			   | ((VasEBoot_uint64_t) addr->mac[5]));
}

VasEBoot_uint16_t VasEBoot_net_ip_chksum(void *ipv, VasEBoot_size_t len);

VasEBoot_err_t
VasEBoot_net_recv_ip_packets (struct VasEBoot_net_buff *nb,
			  struct VasEBoot_net_card *card,
			  const VasEBoot_net_link_level_address_t *hwaddress,
			  const VasEBoot_net_link_level_address_t *src_hwaddress,
                          VasEBoot_uint16_t *vlantag);

VasEBoot_err_t
VasEBoot_net_send_ip_packet (struct VasEBoot_net_network_level_interface *inf,
			 const VasEBoot_net_network_level_address_t *target,
			 const VasEBoot_net_link_level_address_t *ll_target_addr,
			 struct VasEBoot_net_buff *nb,
			 VasEBoot_net_ip_protocol_t proto);

VasEBoot_err_t
VasEBoot_net_recv_icmp_packet (struct VasEBoot_net_buff *nb,
			   struct VasEBoot_net_network_level_interface *inf,
			   const VasEBoot_net_link_level_address_t *ll_src,
			   const VasEBoot_net_network_level_address_t *src);
VasEBoot_err_t
VasEBoot_net_recv_icmp6_packet (struct VasEBoot_net_buff *nb,
			    struct VasEBoot_net_card *card,
			    struct VasEBoot_net_network_level_interface *inf,
			    const VasEBoot_net_link_level_address_t *ll_src,
			    const VasEBoot_net_network_level_address_t *source,
			    const VasEBoot_net_network_level_address_t *dest,
			    VasEBoot_uint8_t ttl);
VasEBoot_err_t
VasEBoot_net_recv_udp_packet (struct VasEBoot_net_buff *nb,
			  struct VasEBoot_net_network_level_interface *inf,
			  const VasEBoot_net_network_level_address_t *src);
VasEBoot_err_t
VasEBoot_net_recv_tcp_packet (struct VasEBoot_net_buff *nb,
			  struct VasEBoot_net_network_level_interface *inf,
			  const VasEBoot_net_network_level_address_t *source);

VasEBoot_uint16_t
VasEBoot_net_ip_transport_checksum (struct VasEBoot_net_buff *nb,
				VasEBoot_uint16_t proto,
				const VasEBoot_net_network_level_address_t *src,
				const VasEBoot_net_network_level_address_t *dst);

struct VasEBoot_net_network_level_interface *
VasEBoot_net_ipv6_get_link_local (struct VasEBoot_net_card *card,
			      const VasEBoot_net_link_level_address_t *hwaddr);
VasEBoot_err_t
VasEBoot_net_icmp6_send_request (struct VasEBoot_net_network_level_interface *inf,
			     const VasEBoot_net_network_level_address_t *proto_addr);

VasEBoot_err_t
VasEBoot_net_icmp6_send_router_solicit (struct VasEBoot_net_network_level_interface *inf);
#endif