diff options
Diffstat (limited to 'drivers/wiznet5k/internet/dhcp/dhcp.c')
| -rw-r--r-- | drivers/wiznet5k/internet/dhcp/dhcp.c | 978 |
1 files changed, 0 insertions, 978 deletions
diff --git a/drivers/wiznet5k/internet/dhcp/dhcp.c b/drivers/wiznet5k/internet/dhcp/dhcp.c deleted file mode 100644 index 5747582599..0000000000 --- a/drivers/wiznet5k/internet/dhcp/dhcp.c +++ /dev/null @@ -1,978 +0,0 @@ -//***************************************************************************** -// -//! \file dhcp.c -//! \brief DHCP APIs implement file. -//! \details Processig DHCP protocol as DISCOVER, OFFER, REQUEST, ACK, NACK and DECLINE. -//! \version 1.1.0 -//! \date 2013/11/18 -//! \par Revision history -//! <2013/11/18> 1st Release -//! <2012/12/20> V1.1.0 -//! 1. Optimize code -//! 2. Add reg_dhcp_cbfunc() -//! 3. Add DHCP_stop() -//! 4. Integrate check_DHCP_state() & DHCP_run() to DHCP_run() -//! 5. Don't care system endian -//! 6. Add comments -//! <2012/12/26> V1.1.1 -//! 1. Modify variable declaration: dhcp_tick_1s is declared volatile for code optimization -//! \author Eric Jung & MidnightCow -//! \copyright -//! -//! Copyright (c) 2013, WIZnet Co., LTD. -//! All rights reserved. -//! -//! Redistribution and use in source and binary forms, with or without -//! modification, are permitted provided that the following conditions -//! are met: -//! -//! * Redistributions of source code must retain the above copyright -//! notice, this list of conditions and the following disclaimer. -//! * Redistributions in binary form must reproduce the above copyright -//! notice, this list of conditions and the following disclaimer in the -//! documentation and/or other materials provided with the distribution. -//! * Neither the name of the <ORGANIZATION> nor the names of its -//! contributors may be used to endorse or promote products derived -//! from this software without specific prior written permission. -//! -//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF -//! THE POSSIBILITY OF SUCH DAMAGE. -// -//***************************************************************************** - -//#include "Ethernet/socket.h" -//#include "Internet/DHCP/dhcp.h" -#include "../../Ethernet/socket.h" -#include "dhcp.h" - -/* If you want to display debug & processing message, Define _DHCP_DEBUG_ in dhcp.h */ - -#ifdef _DHCP_DEBUG_ - #include <stdio.h> -#endif - -/* DHCP state machine. */ -#define STATE_DHCP_INIT 0 ///< Initialize -#define STATE_DHCP_DISCOVER 1 ///< send DISCOVER and wait OFFER -#define STATE_DHCP_REQUEST 2 ///< send REQEUST and wait ACK or NACK -#define STATE_DHCP_LEASED 3 ///< ReceiveD ACK and IP leased -#define STATE_DHCP_REREQUEST 4 ///< send REQUEST for maintaining leased IP -#define STATE_DHCP_RELEASE 5 ///< No use -#define STATE_DHCP_STOP 6 ///< Stop processing DHCP - -#define DHCP_FLAGSBROADCAST 0x8000 ///< The broadcast value of flags in @ref RIP_MSG -#define DHCP_FLAGSUNICAST 0x0000 ///< The unicast value of flags in @ref RIP_MSG - -/* DHCP message OP code */ -#define DHCP_BOOTREQUEST 1 ///< Request Message used in op of @ref RIP_MSG -#define DHCP_BOOTREPLY 2 ///< Reply Message used i op of @ref RIP_MSG - -/* DHCP message type */ -#define DHCP_DISCOVER 1 ///< DISCOVER message in OPT of @ref RIP_MSG -#define DHCP_OFFER 2 ///< OFFER message in OPT of @ref RIP_MSG -#define DHCP_REQUEST 3 ///< REQUEST message in OPT of @ref RIP_MSG -#define DHCP_DECLINE 4 ///< DECLINE message in OPT of @ref RIP_MSG -#define DHCP_ACK 5 ///< ACK message in OPT of @ref RIP_MSG -#define DHCP_NAK 6 ///< NACK message in OPT of @ref RIP_MSG -#define DHCP_RELEASE 7 ///< RELEASE message in OPT of @ref RIP_MSG. No use -#define DHCP_INFORM 8 ///< INFORM message in OPT of @ref RIP_MSG. No use - -#define DHCP_HTYPE10MB 1 ///< Used in type of @ref RIP_MSG -#define DHCP_HTYPE100MB 2 ///< Used in type of @ref RIP_MSG - -#define DHCP_HLENETHERNET 6 ///< Used in hlen of @ref RIP_MSG -#define DHCP_HOPS 0 ///< Used in hops of @ref RIP_MSG -#define DHCP_SECS 0 ///< Used in secs of @ref RIP_MSG - -#define INFINITE_LEASETIME 0xffffffff ///< Infinite lease time - -#define OPT_SIZE 312 /// Max OPT size of @ref RIP_MSG -#define RIP_MSG_SIZE (236+OPT_SIZE) /// Max size of @ref RIP_MSG - -/* - * @brief DHCP option and value (cf. RFC1533) - */ -enum -{ - padOption = 0, - subnetMask = 1, - timerOffset = 2, - routersOnSubnet = 3, - timeServer = 4, - nameServer = 5, - dns = 6, - logServer = 7, - cookieServer = 8, - lprServer = 9, - impressServer = 10, - resourceLocationServer = 11, - hostName = 12, - bootFileSize = 13, - meritDumpFile = 14, - domainName = 15, - swapServer = 16, - rootPath = 17, - extentionsPath = 18, - IPforwarding = 19, - nonLocalSourceRouting = 20, - policyFilter = 21, - maxDgramReasmSize = 22, - defaultIPTTL = 23, - pathMTUagingTimeout = 24, - pathMTUplateauTable = 25, - ifMTU = 26, - allSubnetsLocal = 27, - broadcastAddr = 28, - performMaskDiscovery = 29, - maskSupplier = 30, - performRouterDiscovery = 31, - routerSolicitationAddr = 32, - staticRoute = 33, - trailerEncapsulation = 34, - arpCacheTimeout = 35, - ethernetEncapsulation = 36, - tcpDefaultTTL = 37, - tcpKeepaliveInterval = 38, - tcpKeepaliveGarbage = 39, - nisDomainName = 40, - nisServers = 41, - ntpServers = 42, - vendorSpecificInfo = 43, - netBIOSnameServer = 44, - netBIOSdgramDistServer = 45, - netBIOSnodeType = 46, - netBIOSscope = 47, - xFontServer = 48, - xDisplayManager = 49, - dhcpRequestedIPaddr = 50, - dhcpIPaddrLeaseTime = 51, - dhcpOptionOverload = 52, - dhcpMessageType = 53, - dhcpServerIdentifier = 54, - dhcpParamRequest = 55, - dhcpMsg = 56, - dhcpMaxMsgSize = 57, - dhcpT1value = 58, - dhcpT2value = 59, - dhcpClassIdentifier = 60, - dhcpClientIdentifier = 61, - endOption = 255 -}; - -/* - * @brief DHCP message format - */ -typedef struct { - uint8_t op; ///< @ref DHCP_BOOTREQUEST or @ref DHCP_BOOTREPLY - uint8_t htype; ///< @ref DHCP_HTYPE10MB or @ref DHCP_HTYPE100MB - uint8_t hlen; ///< @ref DHCP_HLENETHERNET - uint8_t hops; ///< @ref DHCP_HOPS - uint32_t xid; ///< @ref DHCP_XID This increase one every DHCP transaction. - uint16_t secs; ///< @ref DHCP_SECS - uint16_t flags; ///< @ref DHCP_FLAGSBROADCAST or @ref DHCP_FLAGSUNICAST - uint8_t ciaddr[4]; ///< @ref Request IP to DHCP sever - uint8_t yiaddr[4]; ///< @ref Offered IP from DHCP server - uint8_t siaddr[4]; ///< No use - uint8_t giaddr[4]; ///< No use - uint8_t chaddr[16]; ///< DHCP client 6bytes MAC address. Others is filled to zero - uint8_t sname[64]; ///< No use - uint8_t file[128]; ///< No use - uint8_t OPT[OPT_SIZE]; ///< Option -} RIP_MSG; - - - -uint8_t DHCP_SOCKET; // Socket number for DHCP - -uint8_t DHCP_SIP[4]; // DHCP Server IP address - -// Network information from DHCP Server -uint8_t OLD_allocated_ip[4] = {0, }; // Previous IP address -uint8_t DHCP_allocated_ip[4] = {0, }; // IP address from DHCP -uint8_t DHCP_allocated_gw[4] = {0, }; // Gateway address from DHCP -uint8_t DHCP_allocated_sn[4] = {0, }; // Subnet mask from DHCP -uint8_t DHCP_allocated_dns[4] = {0, }; // DNS address from DHCP - - -int8_t dhcp_state = STATE_DHCP_INIT; // DHCP state -int8_t dhcp_retry_count = 0; - -uint32_t dhcp_lease_time = INFINITE_LEASETIME; -volatile uint32_t dhcp_tick_1s = 0; // unit 1 second -uint32_t dhcp_tick_next = DHCP_WAIT_TIME ; - -uint32_t DHCP_XID; // Any number - -RIP_MSG* pDHCPMSG; // Buffer pointer for DHCP processing - -uint8_t HOST_NAME[] = DCHP_HOST_NAME; - -uint8_t DHCP_CHADDR[6]; // DHCP Client MAC address. - -/* The default callback function */ -void default_ip_assign(void); -void default_ip_update(void); -void default_ip_conflict(void); - -/* Callback handler */ -void (*dhcp_ip_assign)(void) = default_ip_assign; /* handler to be called when the IP address from DHCP server is first assigned */ -void (*dhcp_ip_update)(void) = default_ip_update; /* handler to be called when the IP address from DHCP server is updated */ -void (*dhcp_ip_conflict)(void) = default_ip_conflict; /* handler to be called when the IP address from DHCP server is conflict */ - -void reg_dhcp_cbfunc(void(*ip_assign)(void), void(*ip_update)(void), void(*ip_conflict)(void)); - - -/* send DISCOVER message to DHCP server */ -void send_DHCP_DISCOVER(void); - -/* send REQEUST message to DHCP server */ -void send_DHCP_REQUEST(void); - -/* send DECLINE message to DHCP server */ -void send_DHCP_DECLINE(void); - -/* IP conflict check by sending ARP-request to leased IP and wait ARP-response. */ -int8_t check_DHCP_leasedIP(void); - -/* check the timeout in DHCP process */ -uint8_t check_DHCP_timeout(void); - -/* Intialize to timeout process. */ -void reset_DHCP_timeout(void); - -/* Parse message as OFFER and ACK and NACK from DHCP server.*/ -int8_t parseDHCPCMSG(void); - -/* The default handler of ip assign first */ -void default_ip_assign(void) -{ - setSIPR(DHCP_allocated_ip); - setSUBR(DHCP_allocated_sn); - setGAR (DHCP_allocated_gw); -} - -/* The default handler of ip changed */ -void default_ip_update(void) -{ - /* WIZchip Software Reset */ - setMR(MR_RST); - getMR(); // for delay - default_ip_assign(); - setSHAR(DHCP_CHADDR); -} - -/* The default handler of ip changed */ -void default_ip_conflict(void) -{ - // WIZchip Software Reset - setMR(MR_RST); - getMR(); // for delay - setSHAR(DHCP_CHADDR); -} - -/* register the call back func. */ -void reg_dhcp_cbfunc(void(*ip_assign)(void), void(*ip_update)(void), void(*ip_conflict)(void)) -{ - dhcp_ip_assign = default_ip_assign; - dhcp_ip_update = default_ip_update; - dhcp_ip_conflict = default_ip_conflict; - if(ip_assign) dhcp_ip_assign = ip_assign; - if(ip_update) dhcp_ip_update = ip_update; - if(ip_conflict) dhcp_ip_conflict = ip_conflict; -} - -/* make the common DHCP message */ -void makeDHCPMSG(void) -{ - uint8_t bk_mac[6]; - uint8_t* ptmp; - uint8_t i; - getSHAR(bk_mac); - pDHCPMSG->op = DHCP_BOOTREQUEST; - pDHCPMSG->htype = DHCP_HTYPE10MB; - pDHCPMSG->hlen = DHCP_HLENETHERNET; - pDHCPMSG->hops = DHCP_HOPS; - ptmp = (uint8_t*)(&pDHCPMSG->xid); - *(ptmp+0) = (uint8_t)((DHCP_XID & 0xFF000000) >> 24); - *(ptmp+1) = (uint8_t)((DHCP_XID & 0x00FF0000) >> 16); - *(ptmp+2) = (uint8_t)((DHCP_XID & 0x0000FF00) >> 8); - *(ptmp+3) = (uint8_t)((DHCP_XID & 0x000000FF) >> 0); - pDHCPMSG->secs = DHCP_SECS; - ptmp = (uint8_t*)(&pDHCPMSG->flags); - *(ptmp+0) = (uint8_t)((DHCP_FLAGSBROADCAST & 0xFF00) >> 8); - *(ptmp+1) = (uint8_t)((DHCP_FLAGSBROADCAST & 0x00FF) >> 0); - - pDHCPMSG->ciaddr[0] = 0; - pDHCPMSG->ciaddr[1] = 0; - pDHCPMSG->ciaddr[2] = 0; - pDHCPMSG->ciaddr[3] = 0; - - pDHCPMSG->yiaddr[0] = 0; - pDHCPMSG->yiaddr[1] = 0; - pDHCPMSG->yiaddr[2] = 0; - pDHCPMSG->yiaddr[3] = 0; - - pDHCPMSG->siaddr[0] = 0; - pDHCPMSG->siaddr[1] = 0; - pDHCPMSG->siaddr[2] = 0; - pDHCPMSG->siaddr[3] = 0; - - pDHCPMSG->giaddr[0] = 0; - pDHCPMSG->giaddr[1] = 0; - pDHCPMSG->giaddr[2] = 0; - pDHCPMSG->giaddr[3] = 0; - - pDHCPMSG->chaddr[0] = DHCP_CHADDR[0]; - pDHCPMSG->chaddr[1] = DHCP_CHADDR[1]; - pDHCPMSG->chaddr[2] = DHCP_CHADDR[2]; - pDHCPMSG->chaddr[3] = DHCP_CHADDR[3]; - pDHCPMSG->chaddr[4] = DHCP_CHADDR[4]; - pDHCPMSG->chaddr[5] = DHCP_CHADDR[5]; - - for (i = 6; i < 16; i++) pDHCPMSG->chaddr[i] = 0; - for (i = 0; i < 64; i++) pDHCPMSG->sname[i] = 0; - for (i = 0; i < 128; i++) pDHCPMSG->file[i] = 0; - - // MAGIC_COOKIE - pDHCPMSG->OPT[0] = (uint8_t)((MAGIC_COOKIE & 0xFF000000) >> 24); - pDHCPMSG->OPT[1] = (uint8_t)((MAGIC_COOKIE & 0x00FF0000) >> 16); - pDHCPMSG->OPT[2] = (uint8_t)((MAGIC_COOKIE & 0x0000FF00) >> 8); - pDHCPMSG->OPT[3] = (uint8_t) (MAGIC_COOKIE & 0x000000FF) >> 0; -} - -/* SEND DHCP DISCOVER */ -void send_DHCP_DISCOVER(void) -{ - uint16_t i; - uint8_t ip[4]; - uint16_t k = 0; - - makeDHCPMSG(); - - k = 4; // because MAGIC_COOKIE already made by makeDHCPMSG() - - // Option Request Param - pDHCPMSG->OPT[k++] = dhcpMessageType; - pDHCPMSG->OPT[k++] = 0x01; - pDHCPMSG->OPT[k++] = DHCP_DISCOVER; - - // Client identifier - pDHCPMSG->OPT[k++] = dhcpClientIdentifier; - pDHCPMSG->OPT[k++] = 0x07; - pDHCPMSG->OPT[k++] = 0x01; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[0]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[1]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[2]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[3]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[4]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[5]; - - // host name - pDHCPMSG->OPT[k++] = hostName; - pDHCPMSG->OPT[k++] = 0; // fill zero length of hostname - for(i = 0 ; HOST_NAME[i] != 0; i++) - pDHCPMSG->OPT[k++] = HOST_NAME[i]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[3]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[4]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[5]; - pDHCPMSG->OPT[k - (i+3+1)] = i+3; // length of hostname - - pDHCPMSG->OPT[k++] = dhcpParamRequest; - pDHCPMSG->OPT[k++] = 0x06; // length of request - pDHCPMSG->OPT[k++] = subnetMask; - pDHCPMSG->OPT[k++] = routersOnSubnet; - pDHCPMSG->OPT[k++] = dns; - pDHCPMSG->OPT[k++] = domainName; - pDHCPMSG->OPT[k++] = dhcpT1value; - pDHCPMSG->OPT[k++] = dhcpT2value; - pDHCPMSG->OPT[k++] = endOption; - - for (i = k; i < OPT_SIZE; i++) pDHCPMSG->OPT[i] = 0; - - // send broadcasting packet - ip[0] = 255; - ip[1] = 255; - ip[2] = 255; - ip[3] = 255; - -#ifdef _DHCP_DEBUG_ - printf("> Send DHCP_DISCOVER\r\n"); -#endif - - sendto(DHCP_SOCKET, (uint8_t *)pDHCPMSG, RIP_MSG_SIZE, ip, DHCP_SERVER_PORT); -} - -/* SEND DHCP REQUEST */ -void send_DHCP_REQUEST(void) -{ - int i; - uint8_t ip[4]; - uint16_t k = 0; - - makeDHCPMSG(); - - if(dhcp_state == STATE_DHCP_LEASED || dhcp_state == STATE_DHCP_REREQUEST) - { - *((uint8_t*)(&pDHCPMSG->flags)) = ((DHCP_FLAGSUNICAST & 0xFF00)>> 8); - *((uint8_t*)(&pDHCPMSG->flags)+1) = (DHCP_FLAGSUNICAST & 0x00FF); - pDHCPMSG->ciaddr[0] = DHCP_allocated_ip[0]; - pDHCPMSG->ciaddr[1] = DHCP_allocated_ip[1]; - pDHCPMSG->ciaddr[2] = DHCP_allocated_ip[2]; - pDHCPMSG->ciaddr[3] = DHCP_allocated_ip[3]; - ip[0] = DHCP_SIP[0]; - ip[1] = DHCP_SIP[1]; - ip[2] = DHCP_SIP[2]; - ip[3] = DHCP_SIP[3]; - } - else - { - ip[0] = 255; - ip[1] = 255; - ip[2] = 255; - ip[3] = 255; - } - - k = 4; // because MAGIC_COOKIE already made by makeDHCPMSG() - - // Option Request Param. - pDHCPMSG->OPT[k++] = dhcpMessageType; - pDHCPMSG->OPT[k++] = 0x01; - pDHCPMSG->OPT[k++] = DHCP_REQUEST; - - pDHCPMSG->OPT[k++] = dhcpClientIdentifier; - pDHCPMSG->OPT[k++] = 0x07; - pDHCPMSG->OPT[k++] = 0x01; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[0]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[1]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[2]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[3]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[4]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[5]; - - if(ip[3] == 255) // if(dchp_state == STATE_DHCP_LEASED || dchp_state == DHCP_REREQUEST_STATE) - { - pDHCPMSG->OPT[k++] = dhcpRequestedIPaddr; - pDHCPMSG->OPT[k++] = 0x04; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[0]; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[1]; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[2]; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[3]; - - pDHCPMSG->OPT[k++] = dhcpServerIdentifier; - pDHCPMSG->OPT[k++] = 0x04; - pDHCPMSG->OPT[k++] = DHCP_SIP[0]; - pDHCPMSG->OPT[k++] = DHCP_SIP[1]; - pDHCPMSG->OPT[k++] = DHCP_SIP[2]; - pDHCPMSG->OPT[k++] = DHCP_SIP[3]; - } - - // host name - pDHCPMSG->OPT[k++] = hostName; - pDHCPMSG->OPT[k++] = 0; // length of hostname - for(i = 0 ; HOST_NAME[i] != 0; i++) - pDHCPMSG->OPT[k++] = HOST_NAME[i]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[3]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[4]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[5]; - pDHCPMSG->OPT[k - (i+3+1)] = i+3; // length of hostname - - pDHCPMSG->OPT[k++] = dhcpParamRequest; - pDHCPMSG->OPT[k++] = 0x08; - pDHCPMSG->OPT[k++] = subnetMask; - pDHCPMSG->OPT[k++] = routersOnSubnet; - pDHCPMSG->OPT[k++] = dns; - pDHCPMSG->OPT[k++] = domainName; - pDHCPMSG->OPT[k++] = dhcpT1value; - pDHCPMSG->OPT[k++] = dhcpT2value; - pDHCPMSG->OPT[k++] = performRouterDiscovery; - pDHCPMSG->OPT[k++] = staticRoute; - pDHCPMSG->OPT[k++] = endOption; - - for (i = k; i < OPT_SIZE; i++) pDHCPMSG->OPT[i] = 0; - -#ifdef _DHCP_DEBUG_ - printf("> Send DHCP_REQUEST\r\n"); -#endif - - sendto(DHCP_SOCKET, (uint8_t *)pDHCPMSG, RIP_MSG_SIZE, ip, DHCP_SERVER_PORT); - -} - -/* SEND DHCP DHCPDECLINE */ -void send_DHCP_DECLINE(void) -{ - int i; - uint8_t ip[4]; - uint16_t k = 0; - - makeDHCPMSG(); - - k = 4; // because MAGIC_COOKIE already made by makeDHCPMSG() - - *((uint8_t*)(&pDHCPMSG->flags)) = ((DHCP_FLAGSUNICAST & 0xFF00)>> 8); - *((uint8_t*)(&pDHCPMSG->flags)+1) = (DHCP_FLAGSUNICAST & 0x00FF); - - // Option Request Param. - pDHCPMSG->OPT[k++] = dhcpMessageType; - pDHCPMSG->OPT[k++] = 0x01; - pDHCPMSG->OPT[k++] = DHCP_DECLINE; - - pDHCPMSG->OPT[k++] = dhcpClientIdentifier; - pDHCPMSG->OPT[k++] = 0x07; - pDHCPMSG->OPT[k++] = 0x01; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[0]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[1]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[2]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[3]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[4]; - pDHCPMSG->OPT[k++] = DHCP_CHADDR[5]; - - pDHCPMSG->OPT[k++] = dhcpRequestedIPaddr; - pDHCPMSG->OPT[k++] = 0x04; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[0]; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[1]; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[2]; - pDHCPMSG->OPT[k++] = DHCP_allocated_ip[3]; - - pDHCPMSG->OPT[k++] = dhcpServerIdentifier; - pDHCPMSG->OPT[k++] = 0x04; - pDHCPMSG->OPT[k++] = DHCP_SIP[0]; - pDHCPMSG->OPT[k++] = DHCP_SIP[1]; - pDHCPMSG->OPT[k++] = DHCP_SIP[2]; - pDHCPMSG->OPT[k++] = DHCP_SIP[3]; - - pDHCPMSG->OPT[k++] = endOption; - - for (i = k; i < OPT_SIZE; i++) pDHCPMSG->OPT[i] = 0; - - //send broadcasting packet - ip[0] = 0xFF; - ip[1] = 0xFF; - ip[2] = 0xFF; - ip[3] = 0xFF; - -#ifdef _DHCP_DEBUG_ - printf("\r\n> Send DHCP_DECLINE\r\n"); -#endif - - sendto(DHCP_SOCKET, (uint8_t *)pDHCPMSG, RIP_MSG_SIZE, ip, DHCP_SERVER_PORT); -} - -/* PARSE REPLY pDHCPMSG */ -int8_t parseDHCPMSG(void) -{ - uint8_t svr_addr[6]; - uint16_t svr_port; - uint16_t len; - - uint8_t * p; - uint8_t * e; - uint8_t type; - uint8_t opt_len; - - if((len = getSn_RX_RSR(DHCP_SOCKET)) > 0) - { - len = recvfrom(DHCP_SOCKET, (uint8_t *)pDHCPMSG, len, svr_addr, &svr_port); - #ifdef _DHCP_DEBUG_ - printf("DHCP message : %d.%d.%d.%d(%d) %d received. \r\n",svr_addr[0],svr_addr[1],svr_addr[2], svr_addr[3],svr_port, len); - #endif - } - else return 0; - if (svr_port == DHCP_SERVER_PORT) { - // compare mac address - if ( (pDHCPMSG->chaddr[0] != DHCP_CHADDR[0]) || (pDHCPMSG->chaddr[1] != DHCP_CHADDR[1]) || - (pDHCPMSG->chaddr[2] != DHCP_CHADDR[2]) || (pDHCPMSG->chaddr[3] != DHCP_CHADDR[3]) || - (pDHCPMSG->chaddr[4] != DHCP_CHADDR[4]) || (pDHCPMSG->chaddr[5] != DHCP_CHADDR[5]) ) - return 0; - type = 0; - p = (uint8_t *)(&pDHCPMSG->op); - p = p + 240; // 240 = sizeof(RIP_MSG) + MAGIC_COOKIE size in RIP_MSG.opt - sizeof(RIP_MSG.opt) - e = p + (len - 240); - - while ( p < e ) { - - switch ( *p ) { - - case endOption : - p = e; // for break while(p < e) - break; - case padOption : - p++; - break; - case dhcpMessageType : - p++; - p++; - type = *p++; - break; - case subnetMask : - p++; - p++; - DHCP_allocated_sn[0] = *p++; - DHCP_allocated_sn[1] = *p++; - DHCP_allocated_sn[2] = *p++; - DHCP_allocated_sn[3] = *p++; - break; - case routersOnSubnet : - p++; - opt_len = *p++; - DHCP_allocated_gw[0] = *p++; - DHCP_allocated_gw[1] = *p++; - DHCP_allocated_gw[2] = *p++; - DHCP_allocated_gw[3] = *p++; - p = p + (opt_len - 4); - break; - case dns : - p++; - opt_len = *p++; - DHCP_allocated_dns[0] = *p++; - DHCP_allocated_dns[1] = *p++; - DHCP_allocated_dns[2] = *p++; - DHCP_allocated_dns[3] = *p++; - p = p + (opt_len - 4); - break; - case dhcpIPaddrLeaseTime : - p++; - opt_len = *p++; - dhcp_lease_time = *p++; - dhcp_lease_time = (dhcp_lease_time << 8) + *p++; - dhcp_lease_time = (dhcp_lease_time << 8) + *p++; - dhcp_lease_time = (dhcp_lease_time << 8) + *p++; - #ifdef _DHCP_DEBUG_ - dhcp_lease_time = 10; - #endif - break; - case dhcpServerIdentifier : - p++; - opt_len = *p++; - DHCP_SIP[0] = *p++; - DHCP_SIP[1] = *p++; - DHCP_SIP[2] = *p++; - DHCP_SIP[3] = *p++; - break; - default : - p++; - opt_len = *p++; - p += opt_len; - break; - } // switch - } // while - } // if - return type; -} - -uint8_t DHCP_run(void) -{ - uint8_t type; - uint8_t ret; - - if(dhcp_state == STATE_DHCP_STOP) return DHCP_STOPPED; - - if(getSn_SR(DHCP_SOCKET) != SOCK_UDP) - socket(DHCP_SOCKET, Sn_MR_UDP, DHCP_CLIENT_PORT, 0x00); - - ret = DHCP_RUNNING; - type = parseDHCPMSG(); - - switch ( dhcp_state ) { - case STATE_DHCP_INIT : - DHCP_allocated_ip[0] = 0; - DHCP_allocated_ip[1] = 0; - DHCP_allocated_ip[2] = 0; - DHCP_allocated_ip[3] = 0; - send_DHCP_DISCOVER(); - dhcp_state = STATE_DHCP_DISCOVER; - break; - case STATE_DHCP_DISCOVER : - if (type == DHCP_OFFER){ -#ifdef _DHCP_DEBUG_ - printf("> Receive DHCP_OFFER\r\n"); -#endif - DHCP_allocated_ip[0] = pDHCPMSG->yiaddr[0]; - DHCP_allocated_ip[1] = pDHCPMSG->yiaddr[1]; - DHCP_allocated_ip[2] = pDHCPMSG->yiaddr[2]; - DHCP_allocated_ip[3] = pDHCPMSG->yiaddr[3]; - - send_DHCP_REQUEST(); - dhcp_state = STATE_DHCP_REQUEST; - } else ret = check_DHCP_timeout(); - break; - - case STATE_DHCP_REQUEST : - if (type == DHCP_ACK) { - -#ifdef _DHCP_DEBUG_ - printf("> Receive DHCP_ACK\r\n"); -#endif - if (check_DHCP_leasedIP()) { - // Network info assignment from DHCP - dhcp_ip_assign(); - reset_DHCP_timeout(); - - dhcp_state = STATE_DHCP_LEASED; - } else { - // IP address conflict occurred - reset_DHCP_timeout(); - dhcp_ip_conflict(); - dhcp_state = STATE_DHCP_INIT; - } - } else if (type == DHCP_NAK) { - -#ifdef _DHCP_DEBUG_ - printf("> Receive DHCP_NACK\r\n"); -#endif - - reset_DHCP_timeout(); - - dhcp_state = STATE_DHCP_DISCOVER; - } else ret = check_DHCP_timeout(); - break; - - case STATE_DHCP_LEASED : - ret = DHCP_IP_LEASED; - if ((dhcp_lease_time != INFINITE_LEASETIME) && ((dhcp_lease_time/2) < dhcp_tick_1s)) { - -#ifdef _DHCP_DEBUG_ - printf("> Maintains the IP address \r\n"); -#endif - - type = 0; - OLD_allocated_ip[0] = DHCP_allocated_ip[0]; - OLD_allocated_ip[1] = DHCP_allocated_ip[1]; - OLD_allocated_ip[2] = DHCP_allocated_ip[2]; - OLD_allocated_ip[3] = DHCP_allocated_ip[3]; - - DHCP_XID++; - - send_DHCP_REQUEST(); - - reset_DHCP_timeout(); - - dhcp_state = STATE_DHCP_REREQUEST; - } - break; - - case STATE_DHCP_REREQUEST : - ret = DHCP_IP_LEASED; - if (type == DHCP_ACK) { - dhcp_retry_count = 0; - if (OLD_allocated_ip[0] != DHCP_allocated_ip[0] || - OLD_allocated_ip[1] != DHCP_allocated_ip[1] || - OLD_allocated_ip[2] != DHCP_allocated_ip[2] || - OLD_allocated_ip[3] != DHCP_allocated_ip[3]) - { - ret = DHCP_IP_CHANGED; - dhcp_ip_update(); - #ifdef _DHCP_DEBUG_ - printf(">IP changed.\r\n"); - #endif - - } - #ifdef _DHCP_DEBUG_ - else printf(">IP is continued.\r\n"); - #endif - reset_DHCP_timeout(); - dhcp_state = STATE_DHCP_LEASED; - } else if (type == DHCP_NAK) { - -#ifdef _DHCP_DEBUG_ - printf("> Receive DHCP_NACK, Failed to maintain ip\r\n"); -#endif - - reset_DHCP_timeout(); - - dhcp_state = STATE_DHCP_DISCOVER; - } else ret = check_DHCP_timeout(); - break; - default : - break; - } - - return ret; -} - -void DHCP_stop(void) -{ - close(DHCP_SOCKET); - dhcp_state = STATE_DHCP_STOP; -} - -uint8_t check_DHCP_timeout(void) -{ - uint8_t ret = DHCP_RUNNING; - - if (dhcp_retry_count < MAX_DHCP_RETRY) { - if (dhcp_tick_next < dhcp_tick_1s) { - - switch ( dhcp_state ) { - case STATE_DHCP_DISCOVER : -// printf("<<timeout>> state : STATE_DHCP_DISCOVER\r\n"); - send_DHCP_DISCOVER(); - break; - - case STATE_DHCP_REQUEST : -// printf("<<timeout>> state : STATE_DHCP_REQUEST\r\n"); - - send_DHCP_REQUEST(); - break; - - case STATE_DHCP_REREQUEST : -// printf("<<timeout>> state : STATE_DHCP_REREQUEST\r\n"); - - send_DHCP_REQUEST(); - break; - - default : - break; - } - - dhcp_tick_1s = 0; - dhcp_tick_next = dhcp_tick_1s + DHCP_WAIT_TIME; - dhcp_retry_count++; - } - } else { // timeout occurred - - switch(dhcp_state) { - case STATE_DHCP_DISCOVER: - dhcp_state = STATE_DHCP_INIT; - ret = DHCP_FAILED; - break; - case STATE_DHCP_REQUEST: - case STATE_DHCP_REREQUEST: - send_DHCP_DISCOVER(); - dhcp_state = STATE_DHCP_DISCOVER; - break; - default : - break; - } - reset_DHCP_timeout(); - } - return ret; -} - -int8_t check_DHCP_leasedIP(void) -{ - uint8_t tmp; - int32_t ret; - - //WIZchip RCR value changed for ARP Timeout count control - tmp = getRCR(); - setRCR(0x03); - - // IP conflict detection : ARP request - ARP reply - // Broadcasting ARP Request for check the IP conflict using UDP sendto() function - ret = sendto(DHCP_SOCKET, (uint8_t *)"CHECK_IP_CONFLICT", 17, DHCP_allocated_ip, 5000); - - // RCR value restore - setRCR(tmp); - - if(ret == SOCKERR_TIMEOUT) { - // UDP send Timeout occurred : allocated IP address is unique, DHCP Success - -#ifdef _DHCP_DEBUG_ - printf("\r\n> Check leased IP - OK\r\n"); -#endif - - return 1; - } else { - // Received ARP reply or etc : IP address conflict occur, DHCP Failed - send_DHCP_DECLINE(); - - ret = dhcp_tick_1s; - while((dhcp_tick_1s - ret) < 2) ; // wait for 1s over; wait to complete to send DECLINE message; - - return 0; - } -} - -void DHCP_init(uint8_t s, uint8_t * buf) -{ - uint8_t zeroip[4] = {0,0,0,0}; - getSHAR(DHCP_CHADDR); - if((DHCP_CHADDR[0] | DHCP_CHADDR[1] | DHCP_CHADDR[2] | DHCP_CHADDR[3] | DHCP_CHADDR[4] | DHCP_CHADDR[5]) == 0x00) - { - // assign temporary mac address, you should be set SHAR before call this function. - DHCP_CHADDR[0] = 0x00; - DHCP_CHADDR[1] = 0x08; - DHCP_CHADDR[2] = 0xdc; - DHCP_CHADDR[3] = 0x00; - DHCP_CHADDR[4] = 0x00; - DHCP_CHADDR[5] = 0x00; - setSHAR(DHCP_CHADDR); - } - - DHCP_SOCKET = s; // SOCK_DHCP - pDHCPMSG = (RIP_MSG*)buf; - DHCP_XID = 0x12345678; - - // WIZchip Netinfo Clear - setSIPR(zeroip); - setSIPR(zeroip); - setGAR(zeroip); - - reset_DHCP_timeout(); - dhcp_state = STATE_DHCP_INIT; -} - - -/* Rset the DHCP timeout count and retry count. */ -void reset_DHCP_timeout(void) -{ - dhcp_tick_1s = 0; - dhcp_tick_next = DHCP_WAIT_TIME; - dhcp_retry_count = 0; -} - -void DHCP_time_handler(void) -{ - dhcp_tick_1s++; -} - -void getIPfromDHCP(uint8_t* ip) -{ - ip[0] = DHCP_allocated_ip[0]; - ip[1] = DHCP_allocated_ip[1]; - ip[2] = DHCP_allocated_ip[2]; - ip[3] = DHCP_allocated_ip[3]; -} - -void getGWfromDHCP(uint8_t* ip) -{ - ip[0] =DHCP_allocated_gw[0]; - ip[1] =DHCP_allocated_gw[1]; - ip[2] =DHCP_allocated_gw[2]; - ip[3] =DHCP_allocated_gw[3]; -} - -void getSNfromDHCP(uint8_t* ip) -{ - ip[0] = DHCP_allocated_sn[0]; - ip[1] = DHCP_allocated_sn[1]; - ip[2] = DHCP_allocated_sn[2]; - ip[3] = DHCP_allocated_sn[3]; -} - -void getDNSfromDHCP(uint8_t* ip) -{ - ip[0] = DHCP_allocated_dns[0]; - ip[1] = DHCP_allocated_dns[1]; - ip[2] = DHCP_allocated_dns[2]; - ip[3] = DHCP_allocated_dns[3]; -} - -uint32_t getDHCPLeasetime(void) -{ - return dhcp_lease_time; -} - - - - |