1/* ********************************************************************* 2 * Broadcom Common Firmware Environment (CFE) 3 * 4 * Internal IP structures File: net_ip_internal.h 5 * 6 * This module contains non-public IP stack constants, 7 * structures, and function prototypes. 8 * 9 * Author: Mitch Lichtenberg (mpl@broadcom.com) 10 * 11 ********************************************************************* 12 * 13 * Copyright 2000,2001,2002,2003 14 * Broadcom Corporation. All rights reserved. 15 * 16 * This software is furnished under license and may be used and 17 * copied only in accordance with the following terms and 18 * conditions. Subject to these conditions, you may download, 19 * copy, install, use, modify and distribute modified or unmodified 20 * copies of this software in source and/or binary form. No title 21 * or ownership is transferred hereby. 22 * 23 * 1) Any source code used, modified or distributed must reproduce 24 * and retain this copyright notice and list of conditions 25 * as they appear in the source file. 26 * 27 * 2) No right is granted to use any trade name, trademark, or 28 * logo of Broadcom Corporation. The "Broadcom Corporation" 29 * name may not be used to endorse or promote products derived 30 * from this software without the prior written permission of 31 * Broadcom Corporation. 32 * 33 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR 34 * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED 35 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 36 * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT 37 * SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN 38 * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, 39 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 40 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 41 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 42 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 43 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 44 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF 45 * THE POSSIBILITY OF SUCH DAMAGE. 46 ********************************************************************* */ 47 48 49/* ********************************************************************* 50 * ARP Protocol 51 ********************************************************************* */ 52 53#define ARP_OPCODE_REQUEST 1 54#define ARP_OPCODE_REPLY 2 55 56#define ARP_HWADDRSPACE_ETHERNET 1 57 58#define PROTOSPACE_IP 0x0800 59#define PROTOSPACE_ARP 0x0806 60 61#define ARP_KEEP_TIMER 60 62#define ARP_QUERY_TIMER 1 63#define ARP_QUERY_RETRIES 4 64#define ARP_TXWAIT_MAX 2 65#define ARP_TABLE_SIZE 8 66 67typedef enum { ae_unused, ae_arping, ae_established } arpstate_t; 68 69typedef struct arpentry_s { 70 arpstate_t ae_state; 71 int ae_usage; 72 int ae_timer; 73 int ae_retries; 74 int ae_permanent; 75 uint8_t ae_ipaddr[IP_ADDR_LEN]; 76 uint8_t ae_ethaddr[ENET_ADDR_LEN]; 77 queue_t ae_txqueue; 78} arpentry_t; 79 80 81/* ********************************************************************* 82 * IP Protocol 83 ********************************************************************* */ 84 85#define IPHDR_VER_4 0x40 86#define IPHDR_LEN_20 0x05 87#define IPHDR_LENGTH 20 88#define IPHDR_TOS_DEFAULT 0x00 89#define IPHDR_TTL_DEFAULT 100 90 91#define IPHDR_RESERVED 0x8000 92#define IPHDR_DONTFRAGMENT 0x4000 93#define IPHDR_MOREFRAGMENTS 0x2000 94#define IPHDR_FRAGOFFSET 0x01FFF 95 96typedef struct ip_protodisp_s { 97 uint8_t protocol; 98 int (*cb)(void *ref,ebuf_t *buf,uint8_t *dst,uint8_t *src); 99 void *ref; 100} ip_protodisp_t; 101 102#define IP_MAX_PROTOCOLS 4 103 104 105struct ip_info_s { 106 net_info_t net_info; 107 108 /* Ethernet info */ 109 ether_info_t *eth_info; 110 111 /* Info specific to IP */ 112 uint16_t ip_id; 113 int ip_port; 114 115 /* IP protocol dispatch table */ 116 ip_protodisp_t ip_protocols[IP_MAX_PROTOCOLS]; 117 118 /* Info specific to ARP */ 119 arpentry_t *arp_table; 120 int arp_port; 121 uint8_t arp_hwaddr[ENET_ADDR_LEN]; 122}; 123 124 125