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/******************************************************************************
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* Copyright (c) 2004, 2008 IBM Corporation
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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* IBM Corporation - initial implementation
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*****************************************************************************/
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* A header for IP-packets.
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* For more information see RFC 791.
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uint8_t ip_hlv; /**< Header length and version of the header */
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uint8_t ip_tos; /**< Type of Service */
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uint16_t ip_len; /**< Length in octets, inlc. this header and data */
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uint16_t ip_id; /**< ID is used to aid in assembling framents */
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uint16_t ip_off; /**< Info about fragmentation (control, offset) */
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uint8_t ip_ttl; /**< Time to Live */
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uint8_t ip_p; /**< Next level protocol type */
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uint16_t ip_sum; /**< Header checksum */
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uint32_t ip_src; /**< Source IP address */
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uint32_t ip_dst; /**< Destination IP address */
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typedef struct iphdr ipv4_hdr_t;
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/* ICMP Error Codes */
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#define ICMP_NET_UNREACHABLE 0
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#define ICMP_HOST_UNREACHABLE 1
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#define ICMP_PROTOCOL_UNREACHABLE 2
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#define ICMP_PORT_UNREACHABLE 3
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#define ICMP_FRAGMENTATION_NEEDED 4
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#define ICMP_SOURCE_ROUTE_FAILED 5
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* A header for ARP-messages, retains info about HW and proto addresses.
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* For more information see RFC 826.
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uint16_t hw_type; /**< HW address space (1 for Ethernet) */
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uint16_t proto_type; /**< Protocol address space */
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uint8_t hw_len; /**< Byte length of each HW address */
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uint8_t proto_len; /**< Byte length of each proto address */
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uint16_t opcode; /**< Identifies is it request (1) or reply (2) */
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uint8_t src_mac[6]; /**< HW address of sender of this packet */
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uint32_t src_ip; /**< Proto address of sender of this packet */
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uint8_t dest_mac[6]; /**< HW address of target of this packet */
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uint32_t dest_ip; /**< Proto address of target of this packet */
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} __attribute((packed));
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/*>>>>>>>>>>>>> Initialization of the IPv4 network layer. <<<<<<<<<<<<<*/
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extern void set_ipv4_address(uint32_t own_ip);
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extern uint32_t get_ipv4_address(void);
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extern void set_ipv4_multicast(uint32_t multicast_ip);
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extern uint32_t get_ipv4_multicast(void);
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extern void set_ipv4_router(uint32_t router_ip);
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extern uint32_t get_ipv4_router(void);
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extern void set_ipv4_netmask(uint32_t subnet_mask);
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extern uint32_t get_ipv4_netmask(void);
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extern int (*send_ip) (void *, int);
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extern void fill_iphdr(uint8_t * packet, uint16_t packetsize,
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uint8_t ip_proto, uint32_t ip_src, uint32_t ip_dst);
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/* Send a IPv4 packet. Adding the Ethernet-Header and resolving the
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* MAC address is done transparent in the background if necessary.
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extern int send_ipv4(void* buffer, int len);
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/* Sends an ICMP Echo request to destination IPv4 address */
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extern void ping_ipv4(uint32_t _ping_dst_ip);
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/* Returns host IPv4 address that we are waiting for a response */
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extern uint32_t pong_ipv4(void);
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/* Handles IPv4-packets that are detected by receive_ether. */
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extern int8_t handle_ipv4(uint8_t * packet, int32_t packetsize);
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/* Handles ARP-packets that are detected by receive_ether. */
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extern int8_t handle_arp(uint8_t * packet, int32_t packetsize);
added
removed
clients/net-snk/app/netlib/ipv4.h
