Daniele Lacamera
Free (GPLv2) TCP/IP stack developed by TASS Belgium
Dependents: lpc1768-picotcp-demo ZeroMQ_PicoTCP_Publisher_demo TCPSocket_HelloWorld_PicoTCP Pico_TCP_UDP_Test ... more
PicoTCP. Copyright (c) 2013 TASS Belgium NV.
Released under the GNU General Public License, version 2.
Different licensing models may exist, at the sole discretion of the Copyright holders.
Official homepage: http://www.picotcp.com
Bug tracker: https://github.com/tass-belgium/picotcp/issues
Development steps:
initial integration with mbed RTOSgeneric mbed Ethernet driverhigh performance NXP LPC1768 specific Ethernet driverMulti-threading support for mbed RTOSBerkeley sockets and integration with the New Socket APIFork of the apps running on top of the New Socket APIScheduling optimizations- Debugging/benchmarking/testing
Demo application (measuring TCP sender performance):
Import programlpc1768-picotcp-demo
A PicoTCP demo app testing the ethernet throughput on the lpc1768 mbed board.
Last commit 17 May 2013 by 
TASS Belgium
Diff: modules/pico_dhcp_common.h
- Revision:
- 51:ab4529a384a6
- Parent:
- 3:b4047e8a0123
- Child:
- 63:97f481e33cb2
--- a/modules/pico_dhcp_common.h Tue Aug 06 08:04:03 2013 +0000
+++ b/modules/pico_dhcp_common.h Mon Sep 02 08:02:21 2013 +0000
@@ -7,96 +7,177 @@
*********************************************************************/
#ifndef _INCLUDE_PICO_DHCP_COMMON
#define _INCLUDE_PICO_DHCP_COMMON
-
-
-#include <stdint.h>
-
-//minimum size is 576, cfr RFC
-#define DHCPC_DATAGRAM_SIZE 576
-#define DHCPD_DATAGRAM_SIZE 576
-
+#include "pico_addressing.h"
#define PICO_DHCPD_PORT (short_be(67))
#define PICO_DHCP_CLIENT_PORT (short_be(68))
-
-#define PICO_DHCP_OP_REQUEST 1
-#define PICO_DHCP_OP_REPLY 2
+#define PICO_DHCPD_MAGIC_COOKIE (long_be(0x63825363))
+#define PICO_DHCP_HTYPE_ETH 1
-#define PICO_HTYPE_ETHER 1
-#define PICO_HLEN_ETHER 6
-
-#define PICO_DHCPD_MAGIC_COOKIE (long_be(0x63825363))
+/* flags */
+#define PICO_DHCP_FLAG_BROADCAST 0x8000
-/* DHCP OPTIONS, RFC2132 */
-#define PICO_DHCPOPT_PAD 0x00
-#define PICO_DHCPOPT_NETMASK 0x01
-#define PICO_DHCPOPT_TIME 0x02
-#define PICO_DHCPOPT_ROUTER 0x03
-#define PICO_DHCPOPT_DNS 0x06
-#define PICO_DHCPOPT_HOSTNAME 0x0c
-#define PICO_DHCPOPT_DOMAINNAME 0x0f
-#define PICO_DHCPOPT_MTU 0x1a
-#define PICO_DHCPOPT_BCAST 0x1c
-#define PICO_DHCPOPT_NETBIOSNS 0x2c
-#define PICO_DHCPOPT_NETBIOSSCOPE 0x2f
+/* options */
+#define PICO_DHCP_OPT_PAD 0x00
+#define PICO_DHCP_OPT_NETMASK 0x01
+#define PICO_DHCP_OPT_TIME 0x02
+#define PICO_DHCP_OPT_ROUTER 0x03
+#define PICO_DHCP_OPT_DNS 0x06
+#define PICO_DHCP_OPT_HOSTNAME 0x0c
+#define PICO_DHCP_OPT_DOMAINNAME 0x0f
+#define PICO_DHCP_OPT_MTU 0x1a
+#define PICO_DHCP_OPT_BROADCAST 0x1c
+#define PICO_DHCP_OPT_NETBIOSNS 0x2c
+#define PICO_DHCP_OPT_NETBIOSSCOPE 0x2f
+#define PICO_DHCP_OPT_REQIP 0x32
+#define PICO_DHCP_OPT_LEASETIME 0x33
+#define PICO_DHCP_OPT_OPTOVERLOAD 0x34
+#define PICO_DHCP_OPT_MSGTYPE 0x35
+#define PICO_DHCP_OPT_SERVERID 0x36
+#define PICO_DHCP_OPT_PARAMLIST 0x37
+#define PICO_DHCP_OPT_MESSAGE 0x38
+#define PICO_DHCP_OPT_MAXMSGSIZE 0x39
+#define PICO_DHCP_OPT_RENEWALTIME 0x3a
+#define PICO_DHCP_OPT_REBINDINGTIME 0x3b
+#define PICO_DHCP_OPT_VENDORID 0x3c
+#define PICO_DHCP_OPT_CLIENTID 0x3d
+#define PICO_DHCP_OPT_DOMAINSEARCH 0x77
+#define PICO_DHCP_OPT_STATICROUTE 0x79
+#define PICO_DHCP_OPT_END 0xFF
-#define PICO_DHCPOPT_REQIP 0x32
-#define PICO_DHCPOPT_LEASETIME 0x33
-#define PICO_DHCPOPT_OPTIONOVERLOAD 0x34
-#define PICO_DHCPOPT_MSGTYPE 0x35
-#define PICO_DHCPOPT_SERVERID 0x36
-#define PICO_DHCPOPT_PARMLIST 0x37
-#define PICO_DHCPOPT_MAXMSGSIZE 0x39
-#define PICO_DHCPOPT_RENEWALTIME 0x3a
-#define PICO_DHCPOPT_REBINDINGTIME 0x3b
-#define PICO_DHCPOPT_DOMAINSEARCH 0x77
-#define PICO_DHCPOPT_STATICROUTE 0x79
-#define PICO_DHCPOPT_END 0xFF
+/* options len */
+#define PICO_DHCP_OPTLEN_HDR 2 /* account for code and len field */
+#define PICO_DHCP_OPTLEN_NETMASK 6
+#define PICO_DHCP_OPTLEN_ROUTER 6
+#define PICO_DHCP_OPTLEN_DNS 6
+#define PICO_DHCP_OPTLEN_BROADCAST 6
+#define PICO_DHCP_OPTLEN_REQIP 6
+#define PICO_DHCP_OPTLEN_LEASETIME 6
+#define PICO_DHCP_OPTLEN_OPTOVERLOAD 3
+#define PICO_DHCP_OPTLEN_MSGTYPE 3
+#define PICO_DHCP_OPTLEN_SERVERID 6
+#define PICO_DHCP_OPTLEN_PARAMLIST 8 /* PicoTCP specific */
+#define PICO_DHCP_OPTLEN_MAXMSGSIZE 4
+#define PICO_DHCP_OPTLEN_RENEWALTIME 6
+#define PICO_DHCP_OPTLEN_REBINDINGTIME 6
+#define PICO_DHCP_OPTLEN_END 1
+
+/* op codes */
+#define PICO_DHCP_OP_REQUEST 1
+#define PICO_DHCP_OP_REPLY 2
-/* DHCP MESSAGE TYPE */
-#define PICO_DHCP_MSG_DISCOVER 1
-#define PICO_DHCP_MSG_OFFER 2
-#define PICO_DHCP_MSG_REQUEST 3
-#define PICO_DHCP_MSG_DECLINE 4
-#define PICO_DHCP_MSG_ACK 5
-#define PICO_DHCP_MSG_NAK 6
-#define PICO_DHCP_MSG_RELEASE 7
-#define PICO_DHCP_MSG_INFORM 8
+/* rfc message types */
+#define PICO_DHCP_MSG_DISCOVER 1
+#define PICO_DHCP_MSG_OFFER 2
+#define PICO_DHCP_MSG_REQUEST 3
+#define PICO_DHCP_MSG_DECLINE 4
+#define PICO_DHCP_MSG_ACK 5
+#define PICO_DHCP_MSG_NAK 6
+#define PICO_DHCP_MSG_RELEASE 7
+#define PICO_DHCP_MSG_INFORM 8
+
+/* custom message types */
+#define PICO_DHCP_EVENT_T1 9
+#define PICO_DHCP_EVENT_T2 10
+#define PICO_DHCP_EVENT_LEASE 11
+#define PICO_DHCP_EVENT_RETRANSMIT 12
-
-enum dhcp_negotiation_state {
- DHCPSTATE_DISCOVER = 0,
- DHCPSTATE_OFFER,
- DHCPSTATE_REQUEST,
- DHCPSTATE_BOUND,
- DHCPSTATE_RENEWING
+struct __attribute__((packed)) pico_dhcp_hdr
+{
+ uint8_t op;
+ uint8_t htype;
+ uint8_t hlen;
+ uint8_t hops; //zero
+ uint32_t xid; //store this in the request
+ uint16_t secs; // ignore
+ uint16_t flags;
+ uint32_t ciaddr; // client address - if asking for renewal
+ uint32_t yiaddr; // your address (client)
+ uint32_t siaddr; // dhcp offered address
+ uint32_t giaddr; // relay agent, bootp.
+ uint8_t hwaddr[6];
+ uint8_t hwaddr_padding[10];
+ char hostname[64];
+ char bootp_filename[128];
+ uint32_t dhcp_magic;
+ uint8_t options[0];
};
-
-struct __attribute__((packed)) pico_dhcphdr
+struct __attribute__((packed)) pico_dhcp_opt
{
- uint8_t op;
- uint8_t htype;
- uint8_t hlen;
- uint8_t hops; //zero
- uint32_t xid; //store this in the request
- uint16_t secs; // ignore
- uint16_t flags;
- uint32_t ciaddr; // client address - if asking for renewal
- uint32_t yiaddr; // your address (client)
- uint32_t siaddr; // dhcp offered address
- uint32_t giaddr; // relay agent, bootp.
- uint8_t hwaddr[6];
- uint8_t hwaddr_padding[10];
- char hostname[64];
- char bootp_filename[128];
- uint32_t dhcp_magic;
- uint8_t options[0];
+ uint8_t code;
+ uint8_t len;
+ union {
+ struct {
+ struct pico_ip4 ip;
+ } netmask;
+ struct {
+ struct pico_ip4 ip;
+ } router;
+ struct {
+ struct pico_ip4 ip;
+ } dns;
+ struct {
+ struct pico_ip4 ip;
+ } broadcast;
+ struct {
+ struct pico_ip4 ip;
+ } req_ip;
+ struct {
+ uint32_t time;
+ } lease_time;
+ struct {
+ uint8_t value;
+ } opt_overload;
+ struct {
+ char name[0];
+ } tftp_server;
+ struct {
+ char name[0];
+ } bootfile;
+ struct {
+ uint8_t type;
+ } msg_type;
+ struct {
+ struct pico_ip4 ip;
+ } server_id;
+ struct {
+ uint8_t code[0];
+ } param_list;
+ struct {
+ char error[0];
+ } message;
+ struct {
+ uint16_t size;
+ } max_msg_size;
+ struct {
+ uint32_t time;
+ } renewal_time;
+ struct {
+ uint32_t time;
+ } rebinding_time;
+ struct {
+ uint8_t id[0];
+ } vendor_id;
+ struct {
+ uint8_t id[0];
+ } client_id;
+ } ext;
};
-
-//common functions for client and server
+uint8_t dhcp_get_next_option(uint8_t *begin, uint8_t *data, int *len, uint8_t **nextopt);
+struct pico_dhcp_opt *pico_dhcp_next_option(struct pico_dhcp_opt **ptr);
+int pico_dhcp_are_options_valid(void *ptr, int len);
-uint8_t dhcp_get_next_option(uint8_t *begin, uint8_t *data, int *len, uint8_t **nextopt);
-int is_options_valid(uint8_t *opt_buffer, int len);
+int pico_dhcp_opt_netmask(void *ptr, struct pico_ip4 *ip);
+int pico_dhcp_opt_router(void *ptr, struct pico_ip4 *ip);
+int pico_dhcp_opt_dns(void *ptr, struct pico_ip4 *ip);
+int pico_dhcp_opt_broadcast(void *ptr, struct pico_ip4 *ip);
+int pico_dhcp_opt_reqip(void *ptr, struct pico_ip4 *ip);
+int pico_dhcp_opt_leasetime(void *ptr, uint32_t time);
+int pico_dhcp_opt_msgtype(void *ptr, uint8_t type);
+int pico_dhcp_opt_serverid(void *ptr, struct pico_ip4 *ip);
+int pico_dhcp_opt_paramlist(void *ptr);
+int pico_dhcp_opt_maxmsgsize(void *ptr, uint16_t size);
+int pico_dhcp_opt_end(void *ptr);
#endif
