From e8bbaf0cbaf3213f17eba846b9beac9741e16ba4 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sun, 20 Sep 2009 16:17:37 +0000 Subject: lwIP related work. git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1173 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/cc.h | 73 +++++ demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/perf.h | 59 ++++ demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.c | 159 ++++++++++ demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h | 91 ++++++ demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/lwip.mk | 44 +++ .../lwip/netif/ethernetif.c | 333 +++++++++++++++++++++ 6 files changed, 759 insertions(+) create mode 100644 demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/cc.h create mode 100644 demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/perf.h create mode 100644 demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.c create mode 100644 demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h create mode 100644 demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/lwip.mk create mode 100644 demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/netif/ethernetif.c (limited to 'demos/ARM7-AT91SAM7X-LWIP-GCC/lwip') diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/cc.h b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/cc.h new file mode 100644 index 000000000..f8e120315 --- /dev/null +++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/cc.h @@ -0,0 +1,73 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ +/* + **** This file incorporates work covered by the following copyright and **** + **** permission notice: **** + + Copyright (c) 2001-2004 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. + + This file is part of the lwIP TCP/IP stack. + + Author: Adam Dunkels +*/ + +#ifndef __CC_H__ +#define __CC_H__ + +#include + +typedef uint8_t u8_t; +typedef int8_t s8_t; +typedef uint16_t u16_t; +typedef int16_t s16_t; +typedef uint32_t u32_t; +typedef int32_t s32_t; +typedef uint32_t mem_ptr_t; + +#define LWIP_PLATFORM_DIAG(x) +#define LWIP_PLATFORM_ASSERT(x) { \ + chSysHalt(); \ +} + +#define BYTE_ORDER LITTLE_ENDIAN + +#endif /* __CC_H__ */ diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/perf.h b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/perf.h new file mode 100644 index 000000000..c6f1d1a90 --- /dev/null +++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/perf.h @@ -0,0 +1,59 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ +/* + **** This file incorporates work covered by the following copyright and **** + **** permission notice: **** + + Copyright (c) 2001-2004 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. + + This file is part of the lwIP TCP/IP stack. + + Author: Adam Dunkels +*/ + +#ifndef __PERF_H__ +#define __PERF_H__ + +#define PERF_START +#define PERF_STOP(x) + +#endif /* __PERF_H__ */ diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.c b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.c new file mode 100644 index 000000000..8248eed72 --- /dev/null +++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.c @@ -0,0 +1,159 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ +/* + **** This file incorporates work covered by the following copyright and **** + **** permission notice: **** + + Copyright (c) 2001-2004 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. + + This file is part of the lwIP TCP/IP stack. + + Author: Adam Dunkels +*/ + +#include + +#include "lwip/opt.h" +#include "lwip/mem.h" +#include "lwip/sys.h" + +#include "arch/cc.h" +#include "arch/sys_arch.h" + +static unsigned cnt; + +void sys_init(void) { + + cnt = 0; +} + +sys_sem_t sys_sem_new(u8_t count) { + + sys_sem_t sem = mem_malloc(sizeof(Semaphore)); + chSemInit(sem, (cnt_t)count); + return sem; +} + +void sys_sem_free(sys_sem_t sem) { + + mem_free(sem); +} + +void sys_sem_signal(sys_sem_t sem) { + + chSemSignal(sem); +} + +u32_t sys_arch_sem_wait(sys_sem_t sem, u32_t timeout) { + systime_t time; + + chSysLock(); + time = chTimeNow(); + chSemWaitTimeoutS(sem, (systime_t)timeout); + time = chTimeNow() - time; + chSysUnlock(); + return time; +} + +sys_mbox_t sys_mbox_new(int size) { + sys_mbox_t mbox; + + mbox = mem_malloc(sizeof(Mailbox) + sizeof(msg_t) * size); + chMBInit(mbox, (void *)(mbox + 1), size); + return mbox; +} + +void sys_mbox_free(sys_mbox_t mbox) { + + mem_free(mbox); +} + +void sys_mbox_post(sys_mbox_t mbox, void *msg) { + + chMBPost(mbox, (msg_t)msg, TIME_INFINITE); +} + +err_t sys_mbox_trypost(sys_mbox_t mbox, void *msg) { + + if (chMBPost(mbox, (msg_t)msg, TIME_IMMEDIATE) == RDY_TIMEOUT) + return ERR_MEM; + return ERR_OK; +} + +u32_t sys_arch_mbox_fetch(sys_mbox_t mbox, void **msg, u32_t timeout) { + + if (chMBFetchS(mbox, (msg_t *)msg, (systime_t)timeout) == RDY_TIMEOUT) + return ERR_MEM; + return ERR_OK; +} + +u32_t sys_arch_mbox_tryfetch(sys_mbox_t mbox, void **msg) { + + if (chMBFetchS(mbox, (msg_t *)msg, TIME_IMMEDIATE) == RDY_TIMEOUT) + return ERR_MEM; + return ERR_OK; +} + +struct sys_timeouts *sys_arch_timeouts(void) { + + return (struct sys_timeouts *)&currp->p_timeouts; +} + +sys_thread_t sys_thread_new(char *name, void (* thread)(void *arg), + void *arg, int stacksize, int prio) { + size_t wsz = THD_WA_SIZE(stacksize); + void *wsp = mem_malloc(wsz); + if (wsp == NULL) + return NULL; + return (sys_thread_t)chThdCreateStatic(wsp, wsz, prio, (tfunc_t)thread, arg); +} + +sys_prot_t sys_arch_protect(void) { + + chSysLock(); + return 0; +} + +void sys_arch_unprotect(sys_prot_t pval) { + + chSysUnlock(); +} diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h new file mode 100644 index 000000000..6dd834506 --- /dev/null +++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h @@ -0,0 +1,91 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ +/* + **** This file incorporates work covered by the following copyright and **** + **** permission notice: **** + + Copyright (c) 2001-2004 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. + + This file is part of the lwIP TCP/IP stack. + + Author: Adam Dunkels +*/ + +#include + +#ifndef __SYS_ARCH_H__ +#define __SYS_ARCH_H__ + +typedef Semaphore * sys_sem_t; +typedef void * sys_mbox_t; +typedef Thread * sys_thread_t; +typedef int sys_prot_t; + +#define SYS_MBOX_NULL (void *)0 +#define SYS_THREAD_NULL (Thread *)0 +#define SYS_SEM_NULL (Semaphore *)0 + +void sys_init(void); +sys_sem_t sys_sem_new(u8_t count); +void sys_sem_free(sys_sem_t sem); +void sys_sem_signal(sys_sem_t sem); +u32_t sys_arch_sem_wait(sys_sem_t sem, u32_t timeout); + +sys_mbox_t sys_mbox_new(int size); +void sys_mbox_free(sys_mbox_t mbox); +void sys_mbox_post(sys_mbox_t mbox, void *msg); +err_t sys_mbox_trypost(sys_mbox_t mbox, void *msg); +u32_t sys_arch_mbox_fetch(sys_mbox_t mbox, void **msg, u32_t timeout); +u32_t sys_arch_mbox_tryfetch(sys_mbox_t mbox, void **msg); + +struct sys_timeouts *sys_arch_timeouts(void); + +sys_thread_t sys_thread_new(char *name, + void (* thread)(void *arg), + void *arg, + int stacksize, + int prio); + +sys_prot_t sys_arch_protect(void); +void sys_arch_unprotect(sys_prot_t pval); + +#endif /* __SYS_ARCH_H__ */ diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/lwip.mk b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/lwip.mk new file mode 100644 index 000000000..99a046b9d --- /dev/null +++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/lwip.mk @@ -0,0 +1,44 @@ +# List of the required lwIP files. +LWNETIFSRC = \ + ${CHIBIOS}/ext/lwip/src/netif/etharp.c \ + ${CHIBIOS}/ext/lwip/src/netif/loopif.c + +LWCORESRC = \ + ${CHIBIOS}/ext/lwip/src/core/dhcp.c \ + ${CHIBIOS}/ext/lwip/src/core/dns.c \ + ${CHIBIOS}/ext/lwip/src/core/init.c \ + ${CHIBIOS}/ext/lwip/src/core/mem.c \ + ${CHIBIOS}/ext/lwip/src/core/memp.c \ + ${CHIBIOS}/ext/lwip/src/core/netif.c \ + ${CHIBIOS}/ext/lwip/src/core/pbuf.c \ + ${CHIBIOS}/ext/lwip/src/core/raw.c \ + ${CHIBIOS}/ext/lwip/src/core/stats.c \ + ${CHIBIOS}/ext/lwip/src/core/sys.c \ + ${CHIBIOS}/ext/lwip/src/core/tcp.c \ + ${CHIBIOS}/ext/lwip/src/core/tcp_in.c \ + ${CHIBIOS}/ext/lwip/src/core/tcp_out.c \ + ${CHIBIOS}/ext/lwip/src/core/udp.c + +LWIPV4SRC = \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/autoip.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/icmp.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/igmp.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/inet.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/inet_chksum.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/ip.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/ip_addr.c \ + ${CHIBIOS}/ext/lwip/src/core/ipv4/ip_frag.c + +LWAPISRC = \ + ${CHIBIOS}/ext/lwip/src/api/api_lib.c \ + ${CHIBIOS}/ext/lwip/src/api/api_msg.c \ + ${CHIBIOS}/ext/lwip/src/api/err.c \ + ${CHIBIOS}/ext/lwip/src/api/netbuf.c \ + ${CHIBIOS}/ext/lwip/src/api/netdb.c \ + ${CHIBIOS}/ext/lwip/src/api/netifapi.c \ + ${CHIBIOS}/ext/lwip/src/api/sockets.c \ + ${CHIBIOS}/ext/lwip/src/api/tcpip.c + +LWINC = \ + ${CHIBIOS}/ext/lwip/src/include \ + ${CHIBIOS}/ext/lwip/src/include/ipv4 diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/netif/ethernetif.c b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/netif/ethernetif.c new file mode 100644 index 000000000..5716f6e58 --- /dev/null +++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/netif/ethernetif.c @@ -0,0 +1,333 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ +/* + **** This file incorporates work covered by the following copyright and **** + **** permission notice: **** + + Copyright (c) 2001-2004 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. + + This file is part of the lwIP TCP/IP stack. + + Author: Adam Dunkels +*/ + +/** + * @file + * Ethernet Interface Skeleton + * + */ + +/* + * This file is a skeleton for developing Ethernet network interface + * drivers for lwIP. Add code to the low_level functions and do a + * search-and-replace for the word "ethernetif" to replace it with + * something that better describes your network interface. + */ + +#include "lwip/opt.h" + +#if 1 /* don't build, this is only a skeleton, see previous comment */ + +#include "lwip/def.h" +#include "lwip/mem.h" +#include "lwip/pbuf.h" +#include "lwip/sys.h" +#include +#include +#include "netif/etharp.h" +#include "netif/ppp_oe.h" + +/* Define those to better describe your network interface. */ +#define IFNAME0 'e' +#define IFNAME1 'n' + +/** + * Helper struct to hold private data used to operate your ethernet interface. + * Keeping the ethernet address of the MAC in this struct is not necessary + * as it is already kept in the struct netif. + * But this is only an example, anyway... + */ +struct ethernetif { + struct eth_addr *ethaddr; + /* Add whatever per-interface state that is needed here. */ +}; + +/* Forward declarations. */ +static void ethernetif_input(struct netif *netif); + +/** + * In this function, the hardware should be initialized. + * Called from ethernetif_init(). + * + * @param netif the already initialized lwip network interface structure + * for this ethernetif + */ +static void +low_level_init(struct netif *netif) +{ + struct ethernetif *ethernetif = netif->state; + + /* set MAC hardware address length */ + netif->hwaddr_len = ETHARP_HWADDR_LEN; + + /* set MAC hardware address */ +////////// netif->hwaddr[0] = ; +////////// ... +////////// netif->hwaddr[5] = ; + + /* maximum transfer unit */ + netif->mtu = 1500; + + /* device capabilities */ + /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */ + netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP; + + /* Do whatever else is needed to initialize interface. */ +} + +/** + * This function should do the actual transmission of the packet. The packet is + * contained in the pbuf that is passed to the function. This pbuf + * might be chained. + * + * @param netif the lwip network interface structure for this ethernetif + * @param p the MAC packet to send (e.g. IP packet including MAC addresses and type) + * @return ERR_OK if the packet could be sent + * an err_t value if the packet couldn't be sent + * + * @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to + * strange results. You might consider waiting for space in the DMA queue + * to become availale since the stack doesn't retry to send a packet + * dropped because of memory failure (except for the TCP timers). + */ + +static err_t +low_level_output(struct netif *netif, struct pbuf *p) +{ + struct ethernetif *ethernetif = netif->state; + struct pbuf *q; + +////////// initiate transfer(); + +#if ETH_PAD_SIZE + pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */ +#endif + + for(q = p; q != NULL; q = q->next) { + /* Send the data from the pbuf to the interface, one pbuf at a + time. The size of the data in each pbuf is kept in the ->len + variable. */ +////////// send data from(q->payload, q->len); + } + +////////// signal that packet should be sent(); + +#if ETH_PAD_SIZE + pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */ +#endif + + LINK_STATS_INC(link.xmit); + + return ERR_OK; +} + +/** + * Should allocate a pbuf and transfer the bytes of the incoming + * packet from the interface into the pbuf. + * + * @param netif the lwip network interface structure for this ethernetif + * @return a pbuf filled with the received packet (including MAC header) + * NULL on memory error + */ +static struct pbuf * +low_level_input(struct netif *netif) +{ + struct ethernetif *ethernetif = netif->state; + struct pbuf *p, *q; + u16_t len; + + /* Obtain the size of the packet and put it into the "len" + variable. */ +////////// len = ; + +#if ETH_PAD_SIZE + len += ETH_PAD_SIZE; /* allow room for Ethernet padding */ +#endif + + /* We allocate a pbuf chain of pbufs from the pool. */ + p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL); + + if (p != NULL) { + +#if ETH_PAD_SIZE + pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */ +#endif + + /* We iterate over the pbuf chain until we have read the entire + * packet into the pbuf. */ + for(q = p; q != NULL; q = q->next) { + /* Read enough bytes to fill this pbuf in the chain. The + * available data in the pbuf is given by the q->len + * variable. */ +////////// read data into(q->payload, q->len); + } +////////// acknowledge that packet has been read(); + +#if ETH_PAD_SIZE + pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */ +#endif + + LINK_STATS_INC(link.recv); + } else { +////////// drop packet(); + LINK_STATS_INC(link.memerr); + LINK_STATS_INC(link.drop); + } + + return p; +} + +/** + * This function should be called when a packet is ready to be read + * from the interface. It uses the function low_level_input() that + * should handle the actual reception of bytes from the network + * interface. Then the type of the received packet is determined and + * the appropriate input function is called. + * + * @param netif the lwip network interface structure for this ethernetif + */ +static void +ethernetif_input(struct netif *netif) +{ + struct ethernetif *ethernetif; + struct eth_hdr *ethhdr; + struct pbuf *p; + + ethernetif = netif->state; + + /* move received packet into a new pbuf */ + p = low_level_input(netif); + /* no packet could be read, silently ignore this */ + if (p == NULL) return; + /* points to packet payload, which starts with an Ethernet header */ + ethhdr = p->payload; + + switch (htons(ethhdr->type)) { + /* IP or ARP packet? */ + case ETHTYPE_IP: + case ETHTYPE_ARP: +#if PPPOE_SUPPORT + /* PPPoE packet? */ + case ETHTYPE_PPPOEDISC: + case ETHTYPE_PPPOE: +#endif /* PPPOE_SUPPORT */ + /* full packet send to tcpip_thread to process */ + if (netif->input(p, netif)!=ERR_OK) + { LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n")); + pbuf_free(p); + p = NULL; + } + break; + + default: + pbuf_free(p); + p = NULL; + break; + } +} + +/** + * Should be called at the beginning of the program to set up the + * network interface. It calls the function low_level_init() to do the + * actual setup of the hardware. + * + * This function should be passed as a parameter to netif_add(). + * + * @param netif the lwip network interface structure for this ethernetif + * @return ERR_OK if the loopif is initialized + * ERR_MEM if private data couldn't be allocated + * any other err_t on error + */ +err_t +ethernetif_init(struct netif *netif) +{ + struct ethernetif *ethernetif; + + LWIP_ASSERT("netif != NULL", (netif != NULL)); + + ethernetif = mem_malloc(sizeof(struct ethernetif)); + if (ethernetif == NULL) { + LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_init: out of memory\n")); + return ERR_MEM; + } + +#if LWIP_NETIF_HOSTNAME + /* Initialize interface hostname */ + netif->hostname = "lwip"; +#endif /* LWIP_NETIF_HOSTNAME */ + + /* + * Initialize the snmp variables and counters inside the struct netif. + * The last argument should be replaced with your link speed, in units + * of bits per second. + */ + NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, ???); + + netif->state = ethernetif; + netif->name[0] = IFNAME0; + netif->name[1] = IFNAME1; + /* We directly use etharp_output() here to save a function call. + * You can instead declare your own function an call etharp_output() + * from it if you have to do some checks before sending (e.g. if link + * is available...) */ + netif->output = etharp_output; + netif->linkoutput = low_level_output; + + ethernetif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]); + + /* initialize the hardware */ + low_level_init(netif); + + return ERR_OK; +} + +#endif /* 0 */ -- cgit v1.2.3