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USB CDC-Ethernet class

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This commit is contained in:
ksb 2009-07-11 14:37:11 +00:00
parent 659b3fb7d3
commit c5e62b7205
6 changed files with 846 additions and 0 deletions
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122
cpu/arm/common/usb/cdc-eth/cdc-eth-descriptors.c Normal file
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#include "descriptors.h"
#include <cdc-acm/cdc.h>
#include <contiki-conf.h>
#include <usb-arch.h>
const struct usb_st_device_descriptor device_descriptor =
{
sizeof(struct usb_st_device_descriptor),
DEVICE,
0x0210,
CDC,
0,
0,
CTRL_EP_SIZE,
0xffff,
0xffff,
0x0010,
2,
1,
3,
1
};
const struct configuration_st {
struct usb_st_configuration_descriptor configuration;
struct usb_st_interface_descriptor comm;
struct usb_cdc_header_func_descriptor header;
struct usb_cdc_union_func_descriptor union_descr;
struct usb_cdc_ethernet_func_descriptor ethernet;
#if 1
struct usb_st_endpoint_descriptor ep_notification;
#endif
struct usb_st_interface_descriptor data;
struct usb_st_endpoint_descriptor ep_in;
struct usb_st_endpoint_descriptor ep_out;
} BYTE_ALIGNED configuration_block =
{
/* Configuration */
{
sizeof(configuration_block.configuration),
CONFIGURATION,
sizeof(configuration_block),
2,
1,
0,
0x80,
50
},
{
sizeof(configuration_block.comm),
INTERFACE,
0,
0,
1,
CDC,
ETHERNET_NETWORKING_CONTROL_MODEL,
0,
0
},
{
sizeof(configuration_block.header),
CS_INTERFACE,
CDC_FUNC_DESCR_HEADER,
0x0110
},
{
sizeof(configuration_block.union_descr),
CS_INTERFACE,
CDC_FUNC_DESCR_UNION,
0, /* Master */
{1} /* Slave */
},
{
sizeof(configuration_block.ethernet),
CS_INTERFACE,
CDC_FUNC_DESCR_ETHERNET,
4,
0, /* No statistics */
UIP_CONF_BUFFER_SIZE - UIP_CONF_LLH_LEN + 14,
0, /* No multicast filters */
0 /* No wake-up filters */
},
{
sizeof(configuration_block.ep_notification),
ENDPOINT,
0x83,
0x03,
8,
100
},
{
sizeof(configuration_block.data),
INTERFACE,
1,
0,
2,
CDC_DATA,
0,
TRANSPARENT_PROTOCOL,
0
},
{
sizeof(configuration_block.ep_in),
ENDPOINT,
0x81,
0x02,
64,
0
},
{
sizeof(configuration_block.ep_out),
ENDPOINT,
0x02,
0x02,
64,
0
}
};
const struct usb_st_configuration_descriptor const *configuration_head =
(struct usb_st_configuration_descriptor const*)&configuration_block;

43
cpu/arm/common/usb/cdc-eth/cdc-eth-string-descriptors.c Normal file
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#include "string-descriptors.h"
static const struct {
struct usb_st_string_descriptor base;
Uint16 chars[18];
} string_descriptor_1_en= {{40, 3, {'U'}}, {
'S', 'B', ' ', 'p', 's', 'e', 'u', 'd', 'o', ' ', 'e', 't', 'h', 'e', 'r', 'n', 'e', 't'}};
static const struct {
struct usb_st_string_descriptor base;
Uint16 chars[8];
} string_descriptor_2_all= {{20, 3, {'F'}}, {
'l', 'u', 'f', 'f', 'w', 'a', 'r', 'e'}};
static const struct {
struct usb_st_string_descriptor base;
Uint16 chars[2];
} string_descriptor_3_all= {{8, 3, {'0'}}, {
'.', '1'}};
static const struct {
struct usb_st_string_descriptor base;
Uint16 chars[11];
} string_descriptor_4_all= {{26, 3, {'0'}}, {
'2', '0', '0', '0', '0', '0', '0', '0', '0', '0', '1'}};
static const struct usb_st_string_descriptor * string_table_en[] =
{
&string_descriptor_1_en.base,
&string_descriptor_2_all.base,
&string_descriptor_3_all.base,
&string_descriptor_4_all.base,
};
static const struct {
struct usb_st_language_descriptor base;
Uint16 langs[0];
} language_descriptor =
{
{4, 3, {0x0409}},
{}};
static const struct {
struct usb_st_string_languages base;
struct usb_st_string_language_map map[0];
} string_languages_full={{1, 4, &language_descriptor.base,
{{0x0409, string_table_en}}}, {
}
};
const struct usb_st_string_languages * const string_languages = &string_languages_full.base;

170
cpu/arm/common/usb/cdc-eth/cdc-eth.c Normal file
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#include <cdc-eth.h>
#include <usb-api.h>
#include <uip_arp.h>
#include <stdio.h>
#include <string.h>
#include <net/uip-fw.h>
#define DATA_IN 0x81
#define DATA_OUT 0x02
#define INTERRUPT_IN 0x83
struct uip_eth_addr default_uip_ethaddr = {{0x02,0x00,0x00,0x00,0x00,0x02}};
static unsigned int
handle_cdc_eth_requests()
{
return 0;
}
static const struct USBRequestHandler cdc_eth_request_handler =
{
0x21, 0x7f,
0x00, 0x00,
handle_cdc_eth_requests
};
static struct USBRequestHandlerHook cdc_eth_request_hook =
{
NULL,
&cdc_eth_request_handler
};
static USBBuffer recv_buffer;
static uint8_t recv_data[UIP_BUFSIZE];
static USBBuffer xmit_buffer[3];
static uint8_t xmit_data[UIP_BUFSIZE];
static void
init_recv_buffer()
{
recv_buffer.next = NULL;
recv_buffer.data = recv_data;
recv_buffer.left = UIP_BUFSIZE;
recv_buffer.flags = USB_BUFFER_SHORT_END | USB_BUFFER_NOTIFY;
}
u8_t
usbeth_send(void)
{
if ((xmit_buffer[0].flags & USB_BUFFER_SUBMITTED)) return UIP_FW_DROPPED;
uip_arp_out();
memcpy(xmit_data, uip_buf, uip_len);
xmit_buffer[0].next = NULL;
xmit_buffer[0].left = uip_len;
xmit_buffer[0].flags = USB_BUFFER_NOTIFY | USB_BUFFER_SHORT_END;
xmit_buffer[0].data = xmit_data;
/* printf("usbeth_send: %d\n", uip_len); */
usb_submit_xmit_buffer(DATA_IN, &xmit_buffer[0]);
return UIP_FW_OK;
}
static struct uip_fw_netif usbethif =
{UIP_FW_NETIF(172,16,0,1, 255,255,255,255, usbeth_send)};
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
PROCESS(usb_eth_process, "USB ethernet");
PROCESS_THREAD(usb_eth_process, ev , data)
{
PROCESS_BEGIN();
usb_register_request_handler(&cdc_eth_request_hook);
usb_setup();
usb_set_ep_event_process(DATA_OUT, process_current);
usb_set_global_event_process(process_current);
uip_fw_default(&usbethif);
uip_setethaddr(default_uip_ethaddr);
uip_arp_init();
while(1) {
PROCESS_WAIT_EVENT();
if (ev == PROCESS_EVENT_EXIT) break;
if (ev == PROCESS_EVENT_POLL) {
unsigned int events = usb_get_global_events();
if (events) {
if (events & USB_EVENT_CONFIG) {
if (usb_get_current_configuration() != 0) {
printf("Configured\n");
usb_setup_bulk_endpoint(DATA_IN);
usb_setup_bulk_endpoint(DATA_OUT);
usb_setup_interrupt_endpoint(INTERRUPT_IN);
init_recv_buffer();
usb_submit_recv_buffer(DATA_OUT, &recv_buffer);
#if 0
{
static const uint8_t foo[4] = {0x12,0x34,0x56,0x78};
xmit_buffer[0].next = NULL;
xmit_buffer[0].left = sizeof(foo);
xmit_buffer[0].flags = USB_BUFFER_SHORT_END;
xmit_buffer[0].data = &foo;
usb_submit_xmit_buffer(DATA_IN, &xmit_buffer[0]);
}
#endif
} else {
usb_disable_endpoint(DATA_IN);
usb_disable_endpoint(DATA_OUT);
usb_disable_endpoint(INTERRUPT_IN);
}
}
}
events = usb_get_ep_events(DATA_OUT);
if (events & USB_EP_EVENT_NOTIFICATION) {
uip_len = sizeof(recv_data) - recv_buffer.left;
/* printf("Received: %d bytes\n", uip_len); */
memcpy(uip_buf, recv_data, uip_len);
#if UIP_CONF_IPV6
if(BUF->type == htons(UIP_ETHTYPE_IPV6)) {
uip_neighbor_add(&IPBUF->srcipaddr, &BUF->src);
tcpip_input();
} else
#endif /* UIP_CONF_IPV6 */
if(BUF->type == htons(UIP_ETHTYPE_IP)) {
uip_len -= sizeof(struct uip_eth_hdr);
tcpip_input();
} else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
uip_arp_arpin();
/* If the above function invocation resulted in data that
should be sent out on the network, the global variable
uip_len is set to a value > 0. */
if (uip_len > 0) {
memcpy(xmit_data, uip_buf, uip_len);
xmit_buffer[0].next = NULL;
xmit_buffer[0].data = xmit_data;
xmit_buffer[0].left = uip_len;
xmit_buffer[0].flags = USB_BUFFER_SHORT_END;
usb_submit_xmit_buffer(DATA_IN, &xmit_buffer[0]);
/* printf("Sent: %d bytes\n", uip_len); */
}
}
init_recv_buffer();
usb_submit_recv_buffer(DATA_OUT, &recv_buffer);
}
}
}
PROCESS_END();
}
void
usb_cdc_eth_setup()
{
process_start(&usb_eth_process, NULL);
}
void
usb_cdc_eth_set_ifaddr(uip_ipaddr_t *addr)
{
usbethif.ipaddr = *addr;
}
void
dummy(uip_ipaddr_t *addr1, uip_ipaddr_t *addr2)
{
*addr1 = *addr2;
}

13
cpu/arm/common/usb/cdc-eth/cdc-eth.h Normal file
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#ifndef __CDC_ETH_H__NUI0ULFC7C__
#define __CDC_ETH_H__NUI0ULFC7C__
#include <net/uip.h>
/* Should be called before usb_cdc_eth_setup */
void
usb_cdc_eth_set_ifaddr(uip_ipaddr_t *addr);
void
usb_cdc_eth_setup();
#endif /* __CDC_ETH_H__NUI0ULFC7C__ */

451
cpu/arm/common/usb/cdc-eth/dhcps.c Normal file
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/* Adapted by Simon Berg from net/dhcpc.c */
/*
* Copyright (c) 2005, 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: dhcps.c,v 1.1 2009/07/11 14:37:11 ksb Exp $
*/
#include <stdio.h>
#include <string.h>
#include <uip_arp.h>
#include "contiki.h"
#include "contiki-net.h"
#include "dhcps.h"
struct dhcp_msg {
uint8_t op, htype, hlen, hops;
uint8_t xid[4];
uint16_t secs, flags;
uint8_t ciaddr[4];
uint8_t yiaddr[4];
uint8_t siaddr[4];
uint8_t giaddr[4];
uint8_t chaddr[16];
#ifndef UIP_CONF_DHCP_LIGHT
uint8_t sname[64];
uint8_t file[128];
#endif
uint8_t options[312];
} CC_BYTE_ALIGNED;
#define BOOTP_BROADCAST 0x8000
#define DHCP_REQUEST 1
#define DHCP_REPLY 2
#define DHCP_HTYPE_ETHERNET 1
#define DHCP_HLEN_ETHERNET 6
#define DHCP_MSG_LEN 236
#define DHCPS_SERVER_PORT 67
#define DHCPS_CLIENT_PORT 68
#define DHCPDISCOVER 1
#define DHCPOFFER 2
#define DHCPREQUEST 3
#define DHCPDECLINE 4
#define DHCPACK 5
#define DHCPNAK 6
#define DHCPRELEASE 7
#define DHCPINFORM 8
#define DHCP_OPTION_SUBNET_MASK 1
#define DHCP_OPTION_ROUTER 3
#define DHCP_OPTION_DNS_SERVER 6
#define DHCP_OPTION_REQ_IPADDR 50
#define DHCP_OPTION_LEASE_TIME 51
#define DHCP_OPTION_MSG_TYPE 53
#define DHCP_OPTION_SERVER_ID 54
#define DHCP_OPTION_REQ_LIST 55
#define DHCP_OPTION_END 255
#define LEASE_FLAGS_ALLOCATED 0x01 /* Lease with an allocated address*/
#define LEASE_FLAGS_VALID 0x02 /* Contains a valid but
possibly outdated lease */
static const struct dhcps_config *config;
static uint8_t *
find_option(uint8_t option)
{
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
uint8_t *optptr = &m->options[4];
uint8_t *end = (uint8_t*)uip_appdata + uip_datalen();
while(optptr < end && *optptr != DHCP_OPTION_END) {
if(*optptr == option) {
return optptr;
}
optptr += optptr[1] + 2;
}
return NULL;
}
static const uint8_t magic_cookie[4] = {99, 130, 83, 99};
static int
check_cookie(void)
{
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
return memcmp(m->options, magic_cookie, 4) == 0;
}
/* Finds any valid lease for a given MAC address */
static struct dhcps_client_lease *
lookup_lease_mac(const uint8_t *chaddr, uint8_t hlen)
{
struct dhcps_client_lease *lease = config->leases;
struct dhcps_client_lease *end = config->leases + config->num_leases;
while(lease != end) {
if (lease->flags & LEASE_FLAGS_VALID
&& memcmp(lease->chaddr, chaddr, hlen) == 0) {
return lease;
}
lease++;
}
return NULL;
}
static struct dhcps_client_lease *
lookup_lease_ip(const uip_ipaddr_t *ip)
{
struct dhcps_client_lease *lease = config->leases;
struct dhcps_client_lease *end = config->leases + config->num_leases;
while(lease != end) {
if (uip_ipaddr_cmp(&lease->ipaddr, ip)) {
return lease;
}
lease++;
}
return NULL;
}
static struct dhcps_client_lease *
find_free_lease(void)
{
struct dhcps_client_lease *found = NULL;
struct dhcps_client_lease *lease = config->leases;
struct dhcps_client_lease *end = config->leases + config->num_leases;
while(lease != end) {
if (!(lease->flags & LEASE_FLAGS_VALID)) return lease;
if (!(lease->flags & LEASE_FLAGS_ALLOCATED)) found = lease;
lease++;
}
return found;
}
struct dhcps_client_lease *
init_lease(struct dhcps_client_lease *lease,
const uint8_t *chaddr, uint8_t hlen)
{
if (lease) {
memcpy(lease->chaddr, chaddr, hlen);
lease->flags = LEASE_FLAGS_VALID;
}
return lease;
}
static struct dhcps_client_lease *
choose_address()
{
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
struct dhcps_client_lease *lease;
lease = lookup_lease_mac(m->chaddr, m->hlen);
if (lease) {
return lease;
}
{
uint8_t *opt;
opt = find_option(DHCP_OPTION_REQ_IPADDR);
if (opt && (lease = lookup_lease_ip((uip_ipaddr_t*)&opt[2]))
&& !(lease->flags & LEASE_FLAGS_ALLOCATED)) {
return init_lease(lease, m->chaddr,m->hlen);
}
}
lease = find_free_lease();
if (lease) {
return init_lease(lease, m->chaddr,m->hlen);
}
return NULL;
}
static struct dhcps_client_lease *
allocate_address()
{
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
struct dhcps_client_lease *lease;
lease = lookup_lease_mac(m->chaddr, m->hlen);
if (!lease) {
uint8_t *opt;
opt = find_option(DHCP_OPTION_REQ_IPADDR);
if (!(opt && (lease = lookup_lease_ip((uip_ipaddr_t*)&opt[2]))
&& !(lease->flags & LEASE_FLAGS_ALLOCATED))) {
return NULL;
}
}
lease->lease_end = clock_seconds()+config->default_lease_time;
lease->flags |= LEASE_FLAGS_ALLOCATED;
return lease;
}
static struct dhcps_client_lease *
release_address()
{
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
struct dhcps_client_lease *lease;
lease = lookup_lease_mac(m->chaddr, m->hlen);
if (!lease) {
return NULL;
}
lease->flags &= ~LEASE_FLAGS_ALLOCATED;
return lease;
}
/*---------------------------------------------------------------------------*/
static uint8_t *
add_msg_type(uint8_t *optptr, uint8_t type)
{
*optptr++ = DHCP_OPTION_MSG_TYPE;
*optptr++ = 1;
*optptr++ = type;
return optptr;
}
/*---------------------------------------------------------------------------*/
static uint8_t *
add_server_id(uint8_t *optptr)
{
*optptr++ = DHCP_OPTION_SERVER_ID;
*optptr++ = 4;
memcpy(optptr, &uip_hostaddr, 4);
return optptr + 4;
}
/*---------------------------------------------------------------------------*/
static uint8_t *
add_lease_time(uint8_t *optptr)
{
uint32_t lt;
*optptr++ = DHCP_OPTION_LEASE_TIME;
*optptr++ = 4;
lt = HTONL(config->default_lease_time);
memcpy(optptr, &lt, 4);
return optptr + 4;
}
/*---------------------------------------------------------------------------*/
static uint8_t *
add_end(uint8_t *optptr)
{
*optptr++ = DHCP_OPTION_END;
return optptr;
}
static uint8_t *
add_config(uint8_t *optptr)
{
if (config->flags & DHCP_CONF_NETMASK) {
*optptr++ = DHCP_OPTION_SUBNET_MASK;
*optptr++ = 4;
memcpy(optptr, &config->netmask, 4);
optptr += 4;
}
if (config->flags & DHCP_CONF_DNSADDR) {
*optptr++ = DHCP_OPTION_DNS_SERVER;
*optptr++ = 4;
memcpy(optptr, &config->dnsaddr, 4);
optptr += 4;
}
if (config->flags & DHCP_CONF_DEFAULT_ROUTER) {
*optptr++ = DHCP_OPTION_ROUTER;
*optptr++ = 4;
memcpy(optptr, &config->default_router, 4);
optptr += 4;
}
return optptr;
}
static void
create_msg(CC_REGISTER_ARG struct dhcp_msg *m)
{
m->op = DHCP_REPLY;
/* m->htype = DHCP_HTYPE_ETHERNET; */
/* m->hlen = DHCP_HLEN_ETHERNET; */
/* memcpy(m->chaddr, &uip_ethaddr,DHCP_HLEN_ETHERNET); */
m->hops = 0;
m->secs = 0;
memcpy(m->siaddr, &uip_hostaddr, 4);
m->sname[0] = '\0';
m->file[0] = '\0';
memcpy(m->options, magic_cookie, sizeof(magic_cookie));
}
static uip_ipaddr_t any_addr;
static uip_ipaddr_t bcast_addr;
/*---------------------------------------------------------------------------*/
static void
send_offer(struct uip_udp_conn *conn, struct dhcps_client_lease *lease)
{
u8_t *end;
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
create_msg(m);
memcpy(&m->yiaddr, &lease->ipaddr,4);
end = add_msg_type(&m->options[4], DHCPOFFER);
end = add_server_id(end);
end = add_lease_time(end);
end = add_config(end);
end = add_end(end);
uip_ipaddr_copy(&conn->ripaddr, &bcast_addr);
uip_send(uip_appdata, (int)(end - (u8_t *)uip_appdata));
}
static void
send_ack(struct uip_udp_conn *conn, struct dhcps_client_lease *lease)
{
u8_t *end;
uip_ipaddr_t ciaddr;
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
create_msg(m);
memcpy(&m->yiaddr, &lease->ipaddr,4);
end = add_msg_type(&m->options[4], DHCPACK);
end = add_server_id(end);
end = add_lease_time(end);
end = add_config(end);
end = add_end(end);
memcpy(&ciaddr, &lease->ipaddr,4);
uip_ipaddr_copy(&conn->ripaddr, &bcast_addr);
uip_send(uip_appdata, (int)(end - (u8_t *)uip_appdata));
printf("ACK\n");
}
static void
send_nack(struct uip_udp_conn *conn)
{
u8_t *end;
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
create_msg(m);
memset(&m->yiaddr, 0, 4);
end = add_msg_type(&m->options[4], DHCPNAK);
end = add_server_id(end);
end = add_end(end);
uip_ipaddr_copy(&conn->ripaddr, &bcast_addr);
uip_send(uip_appdata, (int)(end - (u8_t *)uip_appdata));
printf("NACK\n");
}
/*---------------------------------------------------------------------------*/
PROCESS(dhcp_server_process, "DHCP server");
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(dhcp_server_process, ev , data)
{
static struct uip_udp_conn *conn;
static struct uip_udp_conn *send_conn;
static struct dhcps_client_lease *lease;
PROCESS_BEGIN();
printf("DHCP server starting\n");
uip_ipaddr(&any_addr, 0,0,0,0);
uip_ipaddr(&bcast_addr, 255,255,255,255);
conn = udp_new(&any_addr, HTONS(DHCPS_CLIENT_PORT), NULL);
if (!conn) goto exit;
send_conn = udp_new(&bcast_addr, HTONS(DHCPS_CLIENT_PORT), NULL);
if (!send_conn) goto exit;
uip_udp_bind(conn, HTONS(DHCPS_SERVER_PORT));
uip_udp_bind(send_conn, HTONS(DHCPS_SERVER_PORT));
while(1) {
PROCESS_WAIT_EVENT();
if(ev == tcpip_event) {
if (uip_newdata()) {
struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
struct uip_udpip_hdr *header = (struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN];
if (m->op == DHCP_REQUEST && check_cookie() && m->hlen <= MAX_HLEN) {
uint8_t *opt = find_option(DHCP_OPTION_MSG_TYPE);
if (opt) {
uint8_t mtype = opt[2];
if (opt[2] == DHCPDISCOVER) {
printf("Discover\n");
lease = choose_address();
if (lease) {
lease->lease_end = clock_seconds()+config->default_lease_time;
tcpip_poll_udp(send_conn);
PROCESS_WAIT_EVENT_UNTIL(uip_poll());
send_offer(conn,lease);
}
} else {
uint8_t *opt = find_option(DHCP_OPTION_SERVER_ID);
if (!opt || uip_ipaddr_cmp((uip_ipaddr_t*)&opt[2], &uip_hostaddr)) {
if (mtype == DHCPREQUEST) {
printf("Request\n");
lease = allocate_address();
tcpip_poll_udp(send_conn);
PROCESS_WAIT_EVENT_UNTIL(uip_poll());
if (!lease) {
send_nack(send_conn);
} else {
send_ack(send_conn,lease);
}
} else if (mtype == DHCPRELEASE) {
printf("Release\n");
release_address();
} else if (mtype == DHCPDECLINE) {
printf("Decline\n");
} else if (mtype == DHCPINFORM) {
printf("Inform\n");
}
}
}
}
}
}
} else if (uip_poll()) {
}
}
exit:
printf("DHCP server exiting\n");
PROCESS_END();
}
void
dhcps_init(const struct dhcps_config *conf)
{
config = conf;
process_start(&dhcp_server_process,NULL);
}

47
cpu/arm/common/usb/cdc-eth/dhcps.h Normal file
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@ -0,0 +1,47 @@
#ifndef __DHCPS_H__6M2XYUGNTK__
#define __DHCPS_H__6M2XYUGNTK__
#include "contiki-net.h"
#include <stdint.h>
#define MAX_HLEN 6
struct dhcps_client_lease
{
uint8_t chaddr[MAX_HLEN];
uip_ipaddr_t ipaddr;
unsigned long lease_end;
uint8_t flags;
};
struct dhcps_config
{
unsigned long default_lease_time;
uip_ipaddr_t netmask;
uip_ipaddr_t dnsaddr;
uip_ipaddr_t default_router;
struct dhcps_client_lease *leases;
uint8_t flags;
uint8_t num_leases;
};
#define DHCP_CONF_NETMASK 0x01
#define DHCP_CONF_DNSADDR 0x02
#define DHCP_CONF_DEFAULT_ROUTER 0x04
#define DHCP_INIT_LEASE(addr0, addr1, addr2, addr3) \
{{0},{addr0, addr1, addr2, addr3},0,0}
/**
* Start the DHCP server
*
* This function starts th DHCP server with the given configuration.
* The flags field determines which options are actually sent to the
* client
*
* \param conf Pointer to a configuration struct. The configuration is
* not copied and should remain constant while the server is running.
* The leases pointed to by the configuration must be in writable memory.
**/
void dhcps_init(const struct dhcps_config *conf);
#endif /* __DHCPS_H__6M2XYUGNTK__ */