mbed official / lwip

Official mbed lwIP library (version 1.4.0)

Dependents:   LwIPNetworking NetServicesMin EthernetInterface EthernetInterface_RSF ... more

Legacy Networking Libraries

This is an mbed 2 networking library. For mbed OS 5, lwip has been integrated with built-in networking interfaces. The networking libraries have been revised to better support additional network stacks and thread safety here.

This library is based on the code of lwIP v1.4.0

Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
All rights reserved. 

Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
2. 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.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/lwip/dhcp.h@20:08f08bfc3f3d, 2016-03-14 (annotated)

Committer:
mbed_official
Date:
Mon Mar 14 16:15:36 2016 +0000
Revision:
20:08f08bfc3f3d
Parent:
0:51ac1d130fd4 
Synchronized with git revision fec574a5ed6db26aca1b13992ff271bf527d4a0d



Full URL: https://github.com/mbedmicro/mbed/commit/fec574a5ed6db26aca1b13992ff271bf527d4a0d/



Increased allocated netbufs to handle DTLS handshakes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:51ac1d130fd4 1 /** @file
mbed_official 0:51ac1d130fd4 2 */
mbed_official 0:51ac1d130fd4 3
mbed_official 0:51ac1d130fd4 4 #ifndef __LWIP_DHCP_H__
mbed_official 0:51ac1d130fd4 5 #define __LWIP_DHCP_H__
mbed_official 0:51ac1d130fd4 6
mbed_official 0:51ac1d130fd4 7 #include "lwip/opt.h"
mbed_official 0:51ac1d130fd4 8
mbed_official 0:51ac1d130fd4 9 #if LWIP_DHCP /* don't build if not configured for use in lwipopts.h */
mbed_official 0:51ac1d130fd4 10
mbed_official 0:51ac1d130fd4 11 #include "lwip/netif.h"
mbed_official 0:51ac1d130fd4 12 #include "lwip/udp.h"
mbed_official 0:51ac1d130fd4 13
mbed_official 0:51ac1d130fd4 14 #ifdef __cplusplus
mbed_official 0:51ac1d130fd4 15 extern "C" {
mbed_official 0:51ac1d130fd4 16 #endif
mbed_official 0:51ac1d130fd4 17
mbed_official 0:51ac1d130fd4 18 /** period (in seconds) of the application calling dhcp_coarse_tmr() */
mbed_official 0:51ac1d130fd4 19 #define DHCP_COARSE_TIMER_SECS 60
mbed_official 0:51ac1d130fd4 20 /** period (in milliseconds) of the application calling dhcp_coarse_tmr() */
mbed_official 0:51ac1d130fd4 21 #define DHCP_COARSE_TIMER_MSECS (DHCP_COARSE_TIMER_SECS * 1000UL)
mbed_official 0:51ac1d130fd4 22 /** period (in milliseconds) of the application calling dhcp_fine_tmr() */
mbed_official 0:51ac1d130fd4 23 #define DHCP_FINE_TIMER_MSECS 500
mbed_official 0:51ac1d130fd4 24
mbed_official 0:51ac1d130fd4 25 #define DHCP_CHADDR_LEN 16U
mbed_official 0:51ac1d130fd4 26 #define DHCP_SNAME_LEN 64U
mbed_official 0:51ac1d130fd4 27 #define DHCP_FILE_LEN 128U
mbed_official 0:51ac1d130fd4 28
mbed_official 0:51ac1d130fd4 29 struct dhcp
mbed_official 0:51ac1d130fd4 30 {
mbed_official 0:51ac1d130fd4 31 /** transaction identifier of last sent request */
mbed_official 0:51ac1d130fd4 32 u32_t xid;
mbed_official 0:51ac1d130fd4 33 /** our connection to the DHCP server */
mbed_official 0:51ac1d130fd4 34 struct udp_pcb *pcb;
mbed_official 0:51ac1d130fd4 35 /** incoming msg */
mbed_official 0:51ac1d130fd4 36 struct dhcp_msg *msg_in;
mbed_official 0:51ac1d130fd4 37 /** current DHCP state machine state */
mbed_official 0:51ac1d130fd4 38 u8_t state;
mbed_official 0:51ac1d130fd4 39 /** retries of current request */
mbed_official 0:51ac1d130fd4 40 u8_t tries;
mbed_official 0:51ac1d130fd4 41 #if LWIP_DHCP_AUTOIP_COOP
mbed_official 0:51ac1d130fd4 42 u8_t autoip_coop_state;
mbed_official 0:51ac1d130fd4 43 #endif
mbed_official 0:51ac1d130fd4 44 u8_t subnet_mask_given;
mbed_official 0:51ac1d130fd4 45
mbed_official 0:51ac1d130fd4 46 struct pbuf *p_out; /* pbuf of outcoming msg */
mbed_official 0:51ac1d130fd4 47 struct dhcp_msg *msg_out; /* outgoing msg */
mbed_official 0:51ac1d130fd4 48 u16_t options_out_len; /* outgoing msg options length */
mbed_official 0:51ac1d130fd4 49 u16_t request_timeout; /* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */
mbed_official 0:51ac1d130fd4 50 u16_t t1_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for renewal time */
mbed_official 0:51ac1d130fd4 51 u16_t t2_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for rebind time */
mbed_official 0:51ac1d130fd4 52 ip_addr_t server_ip_addr; /* dhcp server address that offered this lease */
mbed_official 0:51ac1d130fd4 53 ip_addr_t offered_ip_addr;
mbed_official 0:51ac1d130fd4 54 ip_addr_t offered_sn_mask;
mbed_official 0:51ac1d130fd4 55 ip_addr_t offered_gw_addr;
mbed_official 0:51ac1d130fd4 56
mbed_official 0:51ac1d130fd4 57 u32_t offered_t0_lease; /* lease period (in seconds) */
mbed_official 0:51ac1d130fd4 58 u32_t offered_t1_renew; /* recommended renew time (usually 50% of lease period) */
mbed_official 0:51ac1d130fd4 59 u32_t offered_t2_rebind; /* recommended rebind time (usually 66% of lease period) */
mbed_official 0:51ac1d130fd4 60 /* @todo: LWIP_DHCP_BOOTP_FILE configuration option?
mbed_official 0:51ac1d130fd4 61 integrate with possible TFTP-client for booting? */
mbed_official 0:51ac1d130fd4 62 #if LWIP_DHCP_BOOTP_FILE
mbed_official 0:51ac1d130fd4 63 ip_addr_t offered_si_addr;
mbed_official 0:51ac1d130fd4 64 char boot_file_name[DHCP_FILE_LEN];
mbed_official 0:51ac1d130fd4 65 #endif /* LWIP_DHCP_BOOTPFILE */
mbed_official 0:51ac1d130fd4 66 };
mbed_official 0:51ac1d130fd4 67
mbed_official 0:51ac1d130fd4 68 /* MUST be compiled with "pack structs" or equivalent! */
mbed_official 0:51ac1d130fd4 69 #ifdef PACK_STRUCT_USE_INCLUDES
mbed_official 0:51ac1d130fd4 70 # include "arch/bpstruct.h"
mbed_official 0:51ac1d130fd4 71 #endif
mbed_official 0:51ac1d130fd4 72 PACK_STRUCT_BEGIN
mbed_official 0:51ac1d130fd4 73 /** minimum set of fields of any DHCP message */
mbed_official 0:51ac1d130fd4 74 struct dhcp_msg
mbed_official 0:51ac1d130fd4 75 {
mbed_official 0:51ac1d130fd4 76 PACK_STRUCT_FIELD(u8_t op);
mbed_official 0:51ac1d130fd4 77 PACK_STRUCT_FIELD(u8_t htype);
mbed_official 0:51ac1d130fd4 78 PACK_STRUCT_FIELD(u8_t hlen);
mbed_official 0:51ac1d130fd4 79 PACK_STRUCT_FIELD(u8_t hops);
mbed_official 0:51ac1d130fd4 80 PACK_STRUCT_FIELD(u32_t xid);
mbed_official 0:51ac1d130fd4 81 PACK_STRUCT_FIELD(u16_t secs);
mbed_official 0:51ac1d130fd4 82 PACK_STRUCT_FIELD(u16_t flags);
mbed_official 0:51ac1d130fd4 83 PACK_STRUCT_FIELD(ip_addr_p_t ciaddr);
mbed_official 0:51ac1d130fd4 84 PACK_STRUCT_FIELD(ip_addr_p_t yiaddr);
mbed_official 0:51ac1d130fd4 85 PACK_STRUCT_FIELD(ip_addr_p_t siaddr);
mbed_official 0:51ac1d130fd4 86 PACK_STRUCT_FIELD(ip_addr_p_t giaddr);
mbed_official 0:51ac1d130fd4 87 PACK_STRUCT_FIELD(u8_t chaddr[DHCP_CHADDR_LEN]);
mbed_official 0:51ac1d130fd4 88 PACK_STRUCT_FIELD(u8_t sname[DHCP_SNAME_LEN]);
mbed_official 0:51ac1d130fd4 89 PACK_STRUCT_FIELD(u8_t file[DHCP_FILE_LEN]);
mbed_official 0:51ac1d130fd4 90 PACK_STRUCT_FIELD(u32_t cookie);
mbed_official 0:51ac1d130fd4 91 #define DHCP_MIN_OPTIONS_LEN 68U
mbed_official 0:51ac1d130fd4 92 /** make sure user does not configure this too small */
mbed_official 0:51ac1d130fd4 93 #if ((defined(DHCP_OPTIONS_LEN)) && (DHCP_OPTIONS_LEN < DHCP_MIN_OPTIONS_LEN))
mbed_official 0:51ac1d130fd4 94 # undef DHCP_OPTIONS_LEN
mbed_official 0:51ac1d130fd4 95 #endif
mbed_official 0:51ac1d130fd4 96 /** allow this to be configured in lwipopts.h, but not too small */
mbed_official 0:51ac1d130fd4 97 #if (!defined(DHCP_OPTIONS_LEN))
mbed_official 0:51ac1d130fd4 98 /** set this to be sufficient for your options in outgoing DHCP msgs */
mbed_official 0:51ac1d130fd4 99 # define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN
mbed_official 0:51ac1d130fd4 100 #endif
mbed_official 0:51ac1d130fd4 101 PACK_STRUCT_FIELD(u8_t options[DHCP_OPTIONS_LEN]);
mbed_official 0:51ac1d130fd4 102 } PACK_STRUCT_STRUCT;
mbed_official 0:51ac1d130fd4 103 PACK_STRUCT_END
mbed_official 0:51ac1d130fd4 104 #ifdef PACK_STRUCT_USE_INCLUDES
mbed_official 0:51ac1d130fd4 105 # include "arch/epstruct.h"
mbed_official 0:51ac1d130fd4 106 #endif
mbed_official 0:51ac1d130fd4 107
mbed_official 0:51ac1d130fd4 108 void dhcp_set_struct(struct netif *netif, struct dhcp *dhcp);
mbed_official 0:51ac1d130fd4 109 /** Remove a struct dhcp previously set to the netif using dhcp_set_struct() */
mbed_official 0:51ac1d130fd4 110 #define dhcp_remove_struct(netif) do { (netif)->dhcp = NULL; } while(0)
mbed_official 0:51ac1d130fd4 111 void dhcp_cleanup(struct netif *netif);
mbed_official 0:51ac1d130fd4 112 /** start DHCP configuration */
mbed_official 0:51ac1d130fd4 113 err_t dhcp_start(struct netif *netif);
mbed_official 0:51ac1d130fd4 114 /** enforce early lease renewal (not needed normally)*/
mbed_official 0:51ac1d130fd4 115 err_t dhcp_renew(struct netif *netif);
mbed_official 0:51ac1d130fd4 116 /** release the DHCP lease, usually called before dhcp_stop()*/
mbed_official 0:51ac1d130fd4 117 err_t dhcp_release(struct netif *netif);
mbed_official 0:51ac1d130fd4 118 /** stop DHCP configuration */
mbed_official 0:51ac1d130fd4 119 void dhcp_stop(struct netif *netif);
mbed_official 0:51ac1d130fd4 120 /** inform server of our manual IP address */
mbed_official 0:51ac1d130fd4 121 void dhcp_inform(struct netif *netif);
mbed_official 0:51ac1d130fd4 122 /** Handle a possible change in the network configuration */
mbed_official 0:51ac1d130fd4 123 void dhcp_network_changed(struct netif *netif);
mbed_official 0:51ac1d130fd4 124
mbed_official 0:51ac1d130fd4 125 /** if enabled, check whether the offered IP address is not in use, using ARP */
mbed_official 0:51ac1d130fd4 126 #if DHCP_DOES_ARP_CHECK
mbed_official 0:51ac1d130fd4 127 void dhcp_arp_reply(struct netif *netif, ip_addr_t *addr);
mbed_official 0:51ac1d130fd4 128 #endif
mbed_official 0:51ac1d130fd4 129
mbed_official 0:51ac1d130fd4 130 /** to be called every minute */
mbed_official 0:51ac1d130fd4 131 void dhcp_coarse_tmr(void);
mbed_official 0:51ac1d130fd4 132 /** to be called every half second */
mbed_official 0:51ac1d130fd4 133 void dhcp_fine_tmr(void);
mbed_official 0:51ac1d130fd4 134
mbed_official 0:51ac1d130fd4 135 /** DHCP message item offsets and length */
mbed_official 0:51ac1d130fd4 136 #define DHCP_OP_OFS 0
mbed_official 0:51ac1d130fd4 137 #define DHCP_HTYPE_OFS 1
mbed_official 0:51ac1d130fd4 138 #define DHCP_HLEN_OFS 2
mbed_official 0:51ac1d130fd4 139 #define DHCP_HOPS_OFS 3
mbed_official 0:51ac1d130fd4 140 #define DHCP_XID_OFS 4
mbed_official 0:51ac1d130fd4 141 #define DHCP_SECS_OFS 8
mbed_official 0:51ac1d130fd4 142 #define DHCP_FLAGS_OFS 10
mbed_official 0:51ac1d130fd4 143 #define DHCP_CIADDR_OFS 12
mbed_official 0:51ac1d130fd4 144 #define DHCP_YIADDR_OFS 16
mbed_official 0:51ac1d130fd4 145 #define DHCP_SIADDR_OFS 20
mbed_official 0:51ac1d130fd4 146 #define DHCP_GIADDR_OFS 24
mbed_official 0:51ac1d130fd4 147 #define DHCP_CHADDR_OFS 28
mbed_official 0:51ac1d130fd4 148 #define DHCP_SNAME_OFS 44
mbed_official 0:51ac1d130fd4 149 #define DHCP_FILE_OFS 108
mbed_official 0:51ac1d130fd4 150 #define DHCP_MSG_LEN 236
mbed_official 0:51ac1d130fd4 151
mbed_official 0:51ac1d130fd4 152 #define DHCP_COOKIE_OFS DHCP_MSG_LEN
mbed_official 0:51ac1d130fd4 153 #define DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4)
mbed_official 0:51ac1d130fd4 154
mbed_official 0:51ac1d130fd4 155 #define DHCP_CLIENT_PORT 68
mbed_official 0:51ac1d130fd4 156 #define DHCP_SERVER_PORT 67
mbed_official 0:51ac1d130fd4 157
mbed_official 0:51ac1d130fd4 158 /** DHCP client states */
mbed_official 0:51ac1d130fd4 159 #define DHCP_OFF 0
mbed_official 0:51ac1d130fd4 160 #define DHCP_REQUESTING 1
mbed_official 0:51ac1d130fd4 161 #define DHCP_INIT 2
mbed_official 0:51ac1d130fd4 162 #define DHCP_REBOOTING 3
mbed_official 0:51ac1d130fd4 163 #define DHCP_REBINDING 4
mbed_official 0:51ac1d130fd4 164 #define DHCP_RENEWING 5
mbed_official 0:51ac1d130fd4 165 #define DHCP_SELECTING 6
mbed_official 0:51ac1d130fd4 166 #define DHCP_INFORMING 7
mbed_official 0:51ac1d130fd4 167 #define DHCP_CHECKING 8
mbed_official 0:51ac1d130fd4 168 #define DHCP_PERMANENT 9
mbed_official 0:51ac1d130fd4 169 #define DHCP_BOUND 10
mbed_official 0:51ac1d130fd4 170 /** not yet implemented #define DHCP_RELEASING 11 */
mbed_official 0:51ac1d130fd4 171 #define DHCP_BACKING_OFF 12
mbed_official 0:51ac1d130fd4 172
mbed_official 0:51ac1d130fd4 173 /** AUTOIP cooperatation flags */
mbed_official 0:51ac1d130fd4 174 #define DHCP_AUTOIP_COOP_STATE_OFF 0
mbed_official 0:51ac1d130fd4 175 #define DHCP_AUTOIP_COOP_STATE_ON 1
mbed_official 0:51ac1d130fd4 176
mbed_official 0:51ac1d130fd4 177 #define DHCP_BOOTREQUEST 1
mbed_official 0:51ac1d130fd4 178 #define DHCP_BOOTREPLY 2
mbed_official 0:51ac1d130fd4 179
mbed_official 0:51ac1d130fd4 180 /** DHCP message types */
mbed_official 0:51ac1d130fd4 181 #define DHCP_DISCOVER 1
mbed_official 0:51ac1d130fd4 182 #define DHCP_OFFER 2
mbed_official 0:51ac1d130fd4 183 #define DHCP_REQUEST 3
mbed_official 0:51ac1d130fd4 184 #define DHCP_DECLINE 4
mbed_official 0:51ac1d130fd4 185 #define DHCP_ACK 5
mbed_official 0:51ac1d130fd4 186 #define DHCP_NAK 6
mbed_official 0:51ac1d130fd4 187 #define DHCP_RELEASE 7
mbed_official 0:51ac1d130fd4 188 #define DHCP_INFORM 8
mbed_official 0:51ac1d130fd4 189
mbed_official 0:51ac1d130fd4 190 /** DHCP hardware type, currently only ethernet is supported */
mbed_official 0:51ac1d130fd4 191 #define DHCP_HTYPE_ETH 1
mbed_official 0:51ac1d130fd4 192
mbed_official 0:51ac1d130fd4 193 #define DHCP_MAGIC_COOKIE 0x63825363UL
mbed_official 0:51ac1d130fd4 194
mbed_official 0:51ac1d130fd4 195 /* This is a list of options for BOOTP and DHCP, see RFC 2132 for descriptions */
mbed_official 0:51ac1d130fd4 196
mbed_official 0:51ac1d130fd4 197 /** BootP options */
mbed_official 0:51ac1d130fd4 198 #define DHCP_OPTION_PAD 0
mbed_official 0:51ac1d130fd4 199 #define DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */
mbed_official 0:51ac1d130fd4 200 #define DHCP_OPTION_ROUTER 3
mbed_official 0:51ac1d130fd4 201 #define DHCP_OPTION_DNS_SERVER 6
mbed_official 0:51ac1d130fd4 202 #define DHCP_OPTION_HOSTNAME 12
mbed_official 0:51ac1d130fd4 203 #define DHCP_OPTION_IP_TTL 23
mbed_official 0:51ac1d130fd4 204 #define DHCP_OPTION_MTU 26
mbed_official 0:51ac1d130fd4 205 #define DHCP_OPTION_BROADCAST 28
mbed_official 0:51ac1d130fd4 206 #define DHCP_OPTION_TCP_TTL 37
mbed_official 0:51ac1d130fd4 207 #define DHCP_OPTION_END 255
mbed_official 0:51ac1d130fd4 208
mbed_official 0:51ac1d130fd4 209 /** DHCP options */
mbed_official 0:51ac1d130fd4 210 #define DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */
mbed_official 0:51ac1d130fd4 211 #define DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */
mbed_official 0:51ac1d130fd4 212 #define DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */
mbed_official 0:51ac1d130fd4 213
mbed_official 0:51ac1d130fd4 214 #define DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */
mbed_official 0:51ac1d130fd4 215 #define DHCP_OPTION_MESSAGE_TYPE_LEN 1
mbed_official 0:51ac1d130fd4 216
mbed_official 0:51ac1d130fd4 217 #define DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */
mbed_official 0:51ac1d130fd4 218 #define DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */
mbed_official 0:51ac1d130fd4 219
mbed_official 0:51ac1d130fd4 220 #define DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */
mbed_official 0:51ac1d130fd4 221 #define DHCP_OPTION_MAX_MSG_SIZE_LEN 2
mbed_official 0:51ac1d130fd4 222
mbed_official 0:51ac1d130fd4 223 #define DHCP_OPTION_T1 58 /* T1 renewal time */
mbed_official 0:51ac1d130fd4 224 #define DHCP_OPTION_T2 59 /* T2 rebinding time */
mbed_official 0:51ac1d130fd4 225 #define DHCP_OPTION_US 60
mbed_official 0:51ac1d130fd4 226 #define DHCP_OPTION_CLIENT_ID 61
mbed_official 0:51ac1d130fd4 227 #define DHCP_OPTION_TFTP_SERVERNAME 66
mbed_official 0:51ac1d130fd4 228 #define DHCP_OPTION_BOOTFILE 67
mbed_official 0:51ac1d130fd4 229
mbed_official 0:51ac1d130fd4 230 /** possible combinations of overloading the file and sname fields with options */
mbed_official 0:51ac1d130fd4 231 #define DHCP_OVERLOAD_NONE 0
mbed_official 0:51ac1d130fd4 232 #define DHCP_OVERLOAD_FILE 1
mbed_official 0:51ac1d130fd4 233 #define DHCP_OVERLOAD_SNAME 2
mbed_official 0:51ac1d130fd4 234 #define DHCP_OVERLOAD_SNAME_FILE 3
mbed_official 0:51ac1d130fd4 235
mbed_official 0:51ac1d130fd4 236 #ifdef __cplusplus
mbed_official 0:51ac1d130fd4 237 }
mbed_official 0:51ac1d130fd4 238 #endif
mbed_official 0:51ac1d130fd4 239
mbed_official 0:51ac1d130fd4 240 #endif /* LWIP_DHCP */
mbed_official 0:51ac1d130fd4 241
mbed_official 0:51ac1d130fd4 242 #endif /*__LWIP_DHCP_H__*/