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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [services/] [bootp.c] - Rev 341
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/* * Based on LiMon - BOOTP. * * Copyright 1994, 1995, 2000 Neil Russell. * (See License) * Copyright 2000 Roland Borde * Copyright 2000 Paolo Scaffardi */ #if 1 #define DEBUG 1 /* general debug */ #define DEBUG_BOOTP_EXT 1 /* Debug received vendor fields */ #endif #ifdef DEBUG_BOOTP_EXT #define debug_ext(fmt,args...) printf (fmt ,##args) #else #define debug_ext(fmt,args...) #endif #include "common.h" #include "net.h" #include "bootp.h" #include "tftp.h" #include "arp.h" #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ #if (CONFIG_COMMANDS & CFG_CMD_NET) #define TIMEOUT 5 /* Seconds before trying BOOTP again */ #define TIMEOUT_COUNT 1 /* # of timeouts before giving up */ #define PORT_BOOTPS 67 /* BOOTP server UDP port */ #define PORT_BOOTPC 68 /* BOOTP client UDP port */ #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */ #define CONFIG_DHCP_MIN_EXT_LEN 64 #endif ulong BootpID; int BootpTry; #ifdef CONFIG_BOOTP_RANDOM_DELAY ulong seed1, seed2; #endif #if (CONFIG_COMMANDS & CFG_CMD_DHCP) dhcp_state_t dhcp_state = INIT; unsigned int dhcp_leasetime = 0; static void DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len); /* For Debug */ char *dhcpmsg2str(int type) { switch (type) { case 1: return "DHCPDISCOVER"; break; case 2: return "DHCPOFFER"; break; case 3: return "DHCPREQUEST"; break; case 4: return "DHCPDECLINE"; break; case 5: return "DHCPACK"; break; case 6: return "DHCPNACK"; break; case 7: return "DHCPRELEASE"; break; default: return "UNKNOWN/INVALID MSG TYPE"; break; } } #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */ extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL */ #endif #endif /* CFG_CMD_DHCP */ static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len) { Bootp_t *bp = (Bootp_t *) pkt; int retval = 0; if (dest != PORT_BOOTPC || src != PORT_BOOTPS) retval = -1; if (len < sizeof (Bootp_t) - OPT_SIZE) retval = -2; if (bp->bp_op != OP_BOOTREQUEST && bp->bp_op != OP_BOOTREPLY && bp->bp_op != DHCP_OFFER && bp->bp_op != DHCP_ACK && bp->bp_op != DHCP_NAK ) { retval = -3; } if (bp->bp_htype != HWT_ETHER) retval = -4; if (bp->bp_hlen != HWL_ETHER) retval = -5; if (bp->bp_id != BootpID) retval = -6; debug ("Filtering pkt = %d\n", retval); return retval; } /* * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet */ void BootpCopyNetParams(Bootp_t *bp) { NetOurIP = bp->bp_yiaddr; NetServerIP = bp->bp_siaddr; NetCopyEther(NetServerEther, ((Ethernet_t *)NetRxPkt)->et_src); copy_filename (BootFile, bp->bp_file, sizeof(BootFile)); debug ("Bootfile: %s\n", BootFile); /* Propagate to environment: * don't delete exising entry when BOOTP / DHCP reply does * not contain a new value */ if (*BootFile) { setenv ("bootfile", BootFile); } } static int truncate_sz (const char *name, int maxlen, int curlen) { if (curlen >= maxlen) { printf("*** WARNING: %s is too long (%d - max: %d) - truncated\n", name, curlen, maxlen); curlen = maxlen - 1; } return (curlen); } #if !(CONFIG_COMMANDS & CFG_CMD_DHCP) static void BootpVendorFieldProcess(u8 *ext) { int size = *(ext+1) ; debug_ext ("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, *(ext+1)); NetBootFileSize = 0; switch (*ext) { /* Fixed length fields */ case 1: /* Subnet mask */ if (NetOurSubnetMask == 0) memcpy(&NetOurSubnetMask, ext+2, 4); break; case 2: /* Time offset - Not yet supported */ break; /* Variable length fields */ case 3: /* Gateways list */ if (NetOurGatewayIP == 0) { memcpy(&NetOurGatewayIP, ext+2, 4); } break; case 4: /* Time server - Not yet supported */ break; case 5: /* IEN-116 name server - Not yet supported */ break; case 6: if (NetOurDNSIP == 0) { memcpy(&NetOurDNSIP, ext+2, 4); } break; case 7: /* Log server - Not yet supported */ break; case 8: /* Cookie/Quote server - Not yet supported */ break; case 9: /* LPR server - Not yet supported */ break; case 10: /* Impress server - Not yet supported */ break; case 11: /* RPL server - Not yet supported */ break; case 12: /* Host name */ if (NetOurHostName[0] == 0) { size = truncate_sz("Host Name", sizeof(NetOurHostName), size); memcpy(&NetOurHostName, ext+2, size); NetOurHostName[size] = 0 ; } break; case 13: /* Boot file size */ memcpy(&NetBootFileSize, ext+2, size); break; case 14: /* Merit dump file - Not yet supported */ break; case 15: /* Domain name - Not yet supported */ break; case 16: /* Swap server - Not yet supported */ break; case 17: /* Root path */ if (NetOurRootPath[0] == 0) { size = truncate_sz("Root Path", sizeof(NetOurRootPath), size); memcpy(&NetOurRootPath, ext+2, size); NetOurRootPath[size] = 0 ; } break; case 18: /* Extension path - Not yet supported */ /* * This can be used to send the informations of the * vendor area in another file that the client can * access via TFTP. */ break; /* IP host layer fields */ case 40: /* NIS Domain name */ if (NetOurNISDomain[0] == 0) { size = truncate_sz ("NIS Domain Name", sizeof(NetOurNISDomain), size); memcpy(&NetOurNISDomain, ext+2, size); NetOurNISDomain[size] = 0 ; } break; /* Application layer fields */ case 43: /* Vendor specific info - Not yet supported */ /* * Binary informations to exchange specific * product information. */ break; /* Reserved (custom) fields (128..254) */ } } static void BootpVendorProcess(u8 *ext, int size) { u8 *end = ext + size ; debug_ext ("[BOOTP] Checking extension (%d bytes)...\n", size); while ((ext < end) && (*ext != 0xff)) { if (*ext == 0) { ext ++ ; } else { u8 *opt = ext ; ext += ext[1] + 2 ; if (ext <= end) BootpVendorFieldProcess (opt) ; } } #ifdef DEBUG_BOOTP_EXT printf("[BOOTP] Received fields: \n"); if (NetOurSubnetMask) { puts ("NetOurSubnetMask : "); print_IPaddr (NetOurSubnetMask); putc('\n'); } if (NetOurGatewayIP) { puts ("NetOurGatewayIP : "); print_IPaddr (NetOurGatewayIP); putc('\n'); } if (NetBootFileSize) { printf("NetBootFileSize : %d\n", NetBootFileSize); } if (NetOurHostName[0]) { printf("NetOurHostName : %s\n", NetOurHostName); } if (NetOurRootPath[0]) { printf("NetOurRootPath : %s\n", NetOurRootPath); } if (NetOurNISDomain[0]) { printf("NetOurNISDomain : %s\n", NetOurNISDomain); } #endif /* DEBUG_BOOTP_EXT */ } /* * Handle a BOOTP received packet. */ static void BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len) { Bootp_t *bp; char *s; debug ("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%d)\n", src, dest, len, sizeof (Bootp_t)); bp = (Bootp_t *)pkt; if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */ return; /* * Got a good BOOTP reply. Copy the data into our variables. */ #ifdef CONFIG_STATUS_LED status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF); #endif BootpCopyNetParams(bp); /* Store net parameters from reply */ /* Retrieve extended informations (we must parse the vendor area) */ if ((*(uint *)bp->bp_vend) == BOOTP_VENDOR_MAGIC) BootpVendorProcess(&bp->bp_vend[4], len); NetSetTimeout(0, (thand_f *)0); debug ("Got good BOOTP\n"); if (((s = getenv("autoload")) != NULL) && (*s == 'n')) { /* * Just use BOOTP to configure system; * Do not use TFTP to load the bootfile. */ NetState = NETLOOP_SUCCESS; return; } /* Send ARP request to get TFTP server ethernet address. * This automagically starts TFTP, too. */ ArpRequest(); } #endif /* !CFG_CMD_DHCP */ /* * Timeout on BOOTP/DHCP request. */ static void BootpTimeout(void) { if (BootpTry >= TIMEOUT_COUNT) { puts ("\nRetry count exceeded; starting again\n"); NetStartAgain (); } else { NetSetTimeout (TIMEOUT * CFG_HZ, BootpTimeout); BootpRequest (); } } /* * Initialize BOOTP extension fields in the request. */ #if (CONFIG_COMMANDS & CFG_CMD_DHCP) static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP) { u8 *start = e ; u8 *cnt; #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) u8 *x; #endif *e++ = 99; /* RFC1048 Magic Cookie */ *e++ = 130; *e++ = 83; *e++ = 99; *e++ = 53; /* DHCP Message Type */ *e++ = 1; *e++ = message_type; *e++ = 57; /* Maximum DHCP Message Size */ *e++ = 2; *e++ = (576-312+OPT_SIZE) >> 8; *e++ = (576-312+OPT_SIZE) & 0xff; if ( ServerID ) { *e++ = 54; /* ServerID */ *e++ = 4; *e++ = ServerID >> 24; *e++ = ServerID >> 16; *e++ = ServerID >> 8; *e++ = ServerID & 0xff; } if ( RequestedIP ) { *e++ = 50; /* Requested IP */ *e++ = 4; *e++ = RequestedIP >> 24; *e++ = RequestedIP >> 16; *e++ = RequestedIP >> 8; *e++ = RequestedIP & 0xff; } #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) if ((x = dhcp_vendorex_prep (e))) return x - start ; #endif *e++ = 55; /* Parameter Request List */ cnt = e++; /* Pointer to count of requested items */ *cnt = 0; #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK) *e++ = 1; /* Subnet Mask */ *cnt += 1; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY) *e++ = 3; /* Router Option */ *cnt += 1; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS) *e++ = 6; /* DNS Server(s) */ *cnt += 1; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME) *e++ = 12; /* Hostname */ *cnt += 1; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE) *e++ = 13; /* Boot File Size */ *cnt += 1; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH) *e++ = 17; /* Boot path */ *cnt += 1; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN) *e++ = 40; /* NIS Domain name request */ *cnt += 1; #endif *e++ = 255; /* End of the list */ /* Pad to minimal length */ #ifdef CONFIG_DHCP_MIN_EXT_LEN while ((e - start) <= CONFIG_DHCP_MIN_EXT_LEN) *e++ = 0; #endif return e - start ; } #else /* CFG_CMD_DHCP */ /* * Warning: no field size check - change CONFIG_BOOTP_MASK at your own risk! */ static int BootpExtended (u8 *e) { u8 *start = e ; *e++ = 99; /* RFC1048 Magic Cookie */ *e++ = 130; *e++ = 83; *e++ = 99; #if (CONFIG_COMMANDS & CFG_CMD_DHCP) *e++ = 53; /* DHCP Message Type */ *e++ = 1; *e++ = DHCP_DISCOVER; *e++ = 57; /* Maximum DHCP Message Size */ *e++ = 2; *e++ = (576-312+OPT_SIZE) >> 16; *e++ = (576-312+OPT_SIZE) & 0xff; #endif /* CFG_CMD_DHCP */ #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK) *e++ = 1; /* Subnet mask request */ *e++ = 4; e += 4; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY) *e++ = 3; /* Default gateway request */ *e++ = 4; e += 4; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS) *e++ = 6; /* Domain Name Server */ *e++ = 4; e += 4; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME) *e++ = 12; /* Host name request */ *e++ = 32; e += 32; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE) *e++ = 13; /* Boot file size */ *e++ = 2; e += 2; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH) *e++ = 17; /* Boot path */ *e++ = 32; e += 32; #endif #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN) *e++ = 40; /* NIS Domain name request */ *e++ = 32; e += 32; #endif *e++ = 255; /* End of the list */ return e - start ; } #endif /* CFG_CMD_DHCP */ void BootpRequest (void) { volatile uchar *pkt, *iphdr; Bootp_t *bp; int ext_len, pktlen, iplen; #if (CONFIG_COMMANDS & CFG_CMD_DHCP) dhcp_state = INIT; #endif #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ unsigned char bi_enetaddr[6]; int reg; char *e,*s; uchar tmp[64]; ulong tst1, tst2, sum, m_mask, m_value = 0; if (BootpTry ==0) { /* get our mac */ reg = getenv_r ("ethaddr", tmp, sizeof(tmp)); s = (reg > 0) ? tmp : NULL; for (reg=0; reg<6; ++reg) { bi_enetaddr[reg] = s ? simple_strtoul(s, &e, 16) : 0; if (s) { s = (*e) ? e+1 : e; } } #ifdef DEBUG printf("BootpRequest => Our Mac: "); for (reg=0; reg<6; reg++) { printf ("%x%c", bi_enetaddr[reg], reg==5 ? '\n' : ':'); } #endif /* DEBUG */ /* Mac-Manipulation 2 get seed1 */ tst1=0; tst2=0; for (reg=2; reg<6; reg++) { tst1 = tst1 << 8; tst1 = tst1 | bi_enetaddr[reg]; } for (reg=0; reg<2; reg++) { tst2 = tst2 | bi_enetaddr[reg]; tst2 = tst2 << 8; } seed1 = tst1^tst2; /* Mirror seed1*/ m_mask=0x1; for (reg=1;reg<=32;reg++) { m_value |= (m_mask & seed1); seed1 = seed1 >> 1; m_value = m_value << 1; } seed1 = m_value; seed2 = 0xB78D0945; } /* Random Number Generator */ for (reg=0;reg<=0;reg++) { sum = seed1 + seed2; if (sum < seed1 || sum < seed2) sum++; seed2 = seed1; seed1 = sum; if (BootpTry<=2) { /* Start with max 1024 * 1ms */ sum = sum >> (22-BootpTry); } else { /*After 3rd BOOTP request max 8192 * 1ms */ sum = sum >> 19; } } printf ("Random delay: %ld ms...\n", sum); for (reg=0; reg <sum; reg++) { udelay(1000); /*Wait 1ms*/ } #endif /* CONFIG_BOOTP_RANDOM_DELAY */ printf("BOOTP broadcast %d\n", ++BootpTry); pkt = NetTxPacket; memset ((void*)pkt, 0, PKTSIZE); NetSetEther(pkt, NetBcastAddr, PROT_IP); pkt += ETHER_HDR_SIZE; /* * Next line results in incorrect packet size being transmitted, resulting * in errors in some DHCP servers, reporting missing bytes. Size must be * set in packet header after extension length has been determined. * C. Hallinan, DS4.COM, Inc. */ /* NetSetIP(pkt, 0xffffffffL, PORT_BOOTPS, PORT_BOOTPC, sizeof (Bootp_t)); */ iphdr = pkt; /* We need this later for NetSetIP() */ pkt += IP_HDR_SIZE; bp = (Bootp_t *)pkt; bp->bp_op = OP_BOOTREQUEST; bp->bp_htype = HWT_ETHER; bp->bp_hlen = HWL_ETHER; bp->bp_hops = 0; bp->bp_secs = SWAP16( get_timer(0) / CFG_HZ); bp->bp_ciaddr = 0; bp->bp_yiaddr = 0; bp->bp_siaddr = 0; bp->bp_giaddr = 0; NetCopyEther(bp->bp_chaddr, NetOurEther); copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file)); /* Request additional information from the BOOTP/DHCP server */ #if (CONFIG_COMMANDS & CFG_CMD_DHCP) ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0); #else ext_len = BootpExtended(bp->bp_vend); #endif /* CFG_CMD_DHCP */ /* * Bootp ID is the lower 4 bytes of our ethernet address * plus the current time in HZ. */ BootpID = ((ulong)NetOurEther[2] << 24) | ((ulong)NetOurEther[3] << 16) | ((ulong)NetOurEther[4] << 8) | (ulong)NetOurEther[5]; BootpID += get_timer(0); bp->bp_id = BootpID; /* * Calculate proper packet lengths taking into account the * variable size of the options field */ pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + ext_len; iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len; NetSetIP(iphdr, 0xffffffffL, PORT_BOOTPS, PORT_BOOTPC, iplen); NetSetTimeout(SELECT_TIMEOUT * CFG_HZ, BootpTimeout); #if (CONFIG_COMMANDS & CFG_CMD_DHCP) dhcp_state = SELECTING; NetSetHandler(DhcpHandler); #else NetSetHandler(BootpHandler); #endif /* CFG_CMD_DHCP */ NetSendPacket(NetTxPacket, pktlen); } #if (CONFIG_COMMANDS & CFG_CMD_DHCP) void DhcpOptionsProcess(char *popt) { char *end = popt + BOOTP_HDR_SIZE; int oplen, size; while ( popt < end && *popt != 0xff ) { oplen = *(popt + 1); switch(*popt) { case 1: NetOurSubnetMask = *(IPaddr_t *)(popt + 2); break; case 3: NetOurGatewayIP = *(IPaddr_t *)(popt + 2); break; case 6: NetOurDNSIP = *(IPaddr_t *)(popt +2); break; case 12: size = truncate_sz ("Host Name", sizeof(NetOurHostName), oplen); memcpy(&NetOurHostName, popt+2, size); NetOurHostName[size] = 0 ; break; case 15: /* Ignore Domain Name Option */ break; case 17: size = truncate_sz ("Root Path", sizeof(NetOurRootPath), oplen); memcpy(&NetOurRootPath, popt+2, size); NetOurRootPath[size] = 0 ; break; case 51: dhcp_leasetime = *(unsigned int *)(popt + 2); break; case 53: /* Ignore Message Type Option */ break; case 54: NetServerIP = *(IPaddr_t *)(popt+2); break; case 58: /* Ignore Renewal Time Option */ break; case 59: /* Ignore Rebinding Time Option */ break; default: #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) if (dhcp_vendorex_proc(popt)) break; #endif printf("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt); break; } popt += oplen + 2; /* Process next option */ } } static int DhcpMessageType(unsigned char *popt) { if ((*(uint *)popt) != BOOTP_VENDOR_MAGIC) return -1; popt += 4; while ( *popt != 0xff ) { if ( *popt == 53 ) /* DHCP Message Type */ return *(popt + 2); popt += *(popt + 1) + 2; /* Scan through all options */ } return -1; } void DhcpSendRequestPkt(Bootp_t *bp_offer) { volatile uchar *pkt, *iphdr; Bootp_t *bp; int pktlen, iplen, extlen; debug ("DhcpSendRequestPkt: Sending DHCPREQUEST\n"); pkt = NetTxPacket; memset ((void*)pkt, 0, PKTSIZE); NetSetEther(pkt, NetBcastAddr, PROT_IP); pkt += ETHER_HDR_SIZE; iphdr = pkt; /* We'll need this later to set proper pkt size */ pkt += IP_HDR_SIZE; bp = (Bootp_t *)pkt; bp->bp_op = OP_BOOTREQUEST; bp->bp_htype = HWT_ETHER; bp->bp_hlen = HWL_ETHER; bp->bp_hops = 0; bp->bp_secs = SWAP16( get_timer(0) / CFG_HZ); bp->bp_ciaddr = bp_offer->bp_ciaddr; bp->bp_yiaddr = bp_offer->bp_yiaddr; bp->bp_siaddr = bp_offer->bp_siaddr; bp->bp_giaddr = bp_offer->bp_giaddr; NetCopyEther(bp->bp_chaddr, NetOurEther); /* * ID is the id of the OFFER packet */ bp->bp_id = bp_offer->bp_id; /* * Copy options from OFFER packet if present */ extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetServerIP, bp->bp_yiaddr); pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen; iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen; NetSetIP(iphdr, 0xffffffffL, PORT_BOOTPS, PORT_BOOTPC, iplen); debug ("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); NetSendPacket(NetTxPacket, pktlen); } /* * Handle DHCP received packets. */ static void DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len) { Bootp_t *bp = (Bootp_t *)pkt; debug ("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", src, dest, len, dhcp_state); if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */ return; debug ("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: %d\n", src, dest, len, dhcp_state); switch (dhcp_state) { case SELECTING: /* * Wait an appropriate time for any potential DHCPOFFER packets * to arrive. Then select one, and generate DHCPREQUEST response. * If filename is in format we recognize, assume it is a valid * OFFER from a server we want. */ debug ("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); #ifdef CFG_BOOTFILE_PREFIX if (strncmp(bp->bp_file, CFG_BOOTFILE_PREFIX, strlen(CFG_BOOTFILE_PREFIX)) == 0 ) { #endif /* CFG_BOOTFILE_PREFIX */ debug ("TRANSITIONING TO REQUESTING STATE\n"); dhcp_state = REQUESTING; #if 0 if ((*(uint *)bp->bp_vend) == BOOTP_VENDOR_MAGIC) DhcpOptionsProcess(&bp->bp_vend[4]); #endif BootpCopyNetParams(bp); /* Store net params from reply */ NetSetTimeout(TIMEOUT * CFG_HZ, BootpTimeout); DhcpSendRequestPkt(bp); #ifdef CFG_BOOTFILE_PREFIX } #endif /* CFG_BOOTFILE_PREFIX */ return; break; case REQUESTING: debug ("DHCP State: REQUESTING\n"); if ( DhcpMessageType(bp->bp_vend) == DHCP_ACK ) { char *s; if ((*(uint *)bp->bp_vend) == BOOTP_VENDOR_MAGIC) DhcpOptionsProcess(&bp->bp_vend[4]); BootpCopyNetParams(bp); /* Store net params from reply */ dhcp_state = BOUND; printf("DHCP client bound to address "); print_IPaddr(NetOurIP); printf("\n"); /* Obey the 'autoload' setting */ if (((s = getenv("autoload")) != NULL) && (*s == 'n')) { NetState = NETLOOP_SUCCESS; return; } /* Send ARP request to get TFTP server ethernet address. * This automagically starts TFTP, too. */ ArpRequest(); return; } break; default: printf("DHCP: INVALID STATE\n"); break; } } void DhcpRequest(void) { BootpRequest(); } #endif /* CFG_CMD_DHCP */ #endif /* CFG_CMD_NET */
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