Michael Sauer
1b0501179d
Docker-Build mit gcc-arm-none-eabi 4.9-2014q4 (statt Homebrew-Cask) verwendet, Dockerfile/tools/docker.sh dafür aus Task 13 vorgezogen. cmake/sdk.cmake schont gcc 4.9 (kennt -fcommon/-Wno-error=... nicht). Zwei zusätzliche SDK-Stubs (EarlyInit, pre_gpio_config) in src/sys/sdk_stubs.c ergänzt, siehe sdk/PATCHES.md.
429 lines
13 KiB
C
429 lines
13 KiB
C
/**
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* @file
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* Ethernet Interface Skeleton
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*
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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/*
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* This file is a skeleton for developing Ethernet network interface
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* drivers for lwIP. Add code to the low_level functions and do a
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* search-and-replace for the word "ethernetif" to replace it with
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* something that better describes your network interface.
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*/
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#include <string.h>
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#include "lwip/opt.h"
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#if 1 /* don't build, this is only a skeleton, see previous comment */
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#include "lwip/def.h"
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#include "lwip/mem.h"
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#include "lwip/pbuf.h"
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#include "lwip/stats.h"
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#include "lwip/snmp.h"
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#include "lwip/ethip6.h"
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#include "netif/etharp.h"
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#include "netif/ppp/pppoe.h"
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#include "wm_mem.h"
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#include "lwip/igmp.h"
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#include "lwip/mld6.h"
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#include "tls_common.h"
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#if TLS_CONFIG_AP_OPT_FWD
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#include "lwip/tcpip.h"
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#endif
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/* Define those to better describe your network interface. */
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#define IFNAME0 'e'
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#define IFNAME1 'n'
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/** Maximum transfer unit */
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#define NET_MTU 1500
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/** Network link speed */
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#define NET_LINK_SPEED 100000000
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/**
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* Helper struct to hold private data used to operate your ethernet interface.
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* Keeping the ethernet address of the MAC in this struct is not necessary
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* as it is already kept in the struct netif.
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* But this is only an example, anyway...
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*/
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struct ethernetif {
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struct eth_addr *ethaddr;
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/* Add whatever per-interface state that is needed here. */
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};
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/* Forward declarations. */
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int ethernetif_input(const u8 *bssid, u8 *buf, u32 buf_len);
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extern struct netif *tls_get_netif(void);
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extern u8* tls_wifi_buffer_acquire(int total_len);
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extern void tls_wifi_buffer_release(bool is_apsta, u8* buffer);
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extern u8 *wpa_supplicant_get_mac(void);
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extern int tls_hw_set_multicast_key(u8* addr);
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extern int tls_hw_del_multicast_key(u8* addr);
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#if TLS_CONFIG_AP
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extern u8 *hostapd_get_mac(void);
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#endif
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/**
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* In this function, the hardware should be initialized.
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* Called from ethernetif_init().
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*
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* @param netif the already initialized lwip network interface structure
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* for this ethernetif
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*/
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static void
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low_level_init(struct netif *netif)
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{
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u8* mac_addr;
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/* Set MAC hardware address length */
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netif->hwaddr_len = ETH_ALEN;
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#if TLS_CONFIG_AP
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if (netif != tls_get_netif())
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{
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mac_addr = hostapd_get_mac();
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/* Set MAC hardware address */
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MEMCPY(&netif->hwaddr[0], mac_addr, ETH_ALEN);
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}
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else
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#endif
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{
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mac_addr = wpa_supplicant_get_mac();
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/* Set MAC hardware address */
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MEMCPY(&netif->hwaddr[0], mac_addr, ETH_ALEN);
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}
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/* Maximum transfer unit */
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netif->mtu = NET_MTU;
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#if LWIP_IPV6_AUTOCONFIG
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netif_set_ip6_autoconfig_enabled(netif, 1);
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#endif
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/* device capabilities */
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/* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
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netif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP |
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NETIF_FLAG_IGMP
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#if defined(DHCP_USED)
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| NETIF_FLAG_DHCP
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#endif
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;
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#if LWIP_IPV6 && LWIP_IPV6_MLD
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/*
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* For hardware/netifs that implement MAC filtering.
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* All-nodes link-local is handled by default, so we must let the hardware know
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* to allow multicast packets in.
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* Should set mld_mac_filter previously. */
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if (netif->mld_mac_filter != NULL) {
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ip6_addr_t ip6_allnodes_ll;
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ip6_addr_set_allnodes_linklocal(&ip6_allnodes_ll);
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netif->mld_mac_filter(netif, &ip6_allnodes_ll, NETIF_ADD_MAC_FILTER);
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}
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#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
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/* Do whatever else is needed to initialize interface. */
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}
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/**
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* This function should do the actual transmission of the packet. The packet is
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* contained in the pbuf that is passed to the function. This pbuf
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* might be chained.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
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* @return ERR_OK if the packet could be sent
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* an err_t value if the packet couldn't be sent
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*
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* @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
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* strange results. You might consider waiting for space in the DMA queue
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* to become available since the stack doesn't retry to send a packet
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* dropped because of memory failure (except for the TCP timers).
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*/
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static err_t low_level_output(struct netif *netif, struct pbuf *p)
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{
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struct pbuf *q = NULL;
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int datalen = 0;
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u8* buf = tls_wifi_buffer_acquire(p->tot_len);
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if(buf == NULL)
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return ERR_MEM;
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#if ETH_PAD_SIZE
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pbuf_header(p, -ETH_PAD_SIZE); /* Drop the padding word */
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#endif
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/* Check the buffer boundary */
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//if (p->tot_len > NET_RW_BUFF_SIZE) {
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// return ERR_BUF;
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//}
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for (q = p; q != NULL; q = q->next) {
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/* Send data from(q->payload, q->len); */
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MEMCPY(buf + datalen, q->payload, q->len);
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datalen += q->len;
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}
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#if TLS_CONFIG_AP
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if (netif != tls_get_netif())
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tls_wifi_buffer_release(true, buf);
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else
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#endif
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tls_wifi_buffer_release(false, buf);
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#if ETH_PAD_SIZE
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pbuf_header(p, ETH_PAD_SIZE); /* Reclaim the padding word */
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#endif
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LINK_STATS_INC(link.xmit);
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return ERR_OK;
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}
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/**
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* Should allocate a pbuf and transfer the bytes of the incoming
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* packet from the interface into the pbuf.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @return a pbuf filled with the received packet (including MAC header)
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* NULL on memory error
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*/
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static struct pbuf *low_level_input(struct netif *netif, u8 *buf, u32 buf_len)
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{
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struct pbuf *p = NULL, *q = NULL;
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u16_t s_len;
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u8_t *bufptr;
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/* Obtain the size of the packet and put it into the "len"
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* variable. */
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s_len = buf_len;
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bufptr = buf;
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#if ETH_PAD_SIZE
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s_len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
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#endif
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/* We allocate a pbuf chain of pbufs from the pool. */
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p = pbuf_alloc(PBUF_RAW, s_len, PBUF_RAM);
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if (p != NULL) {
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#if ETH_PAD_SIZE
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pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
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#endif
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/* Iterate over the pbuf chain until we have read the entire
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* packet into the pbuf. */
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for (q = p; q != NULL; q = q->next) {
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/* Read enough bytes to fill this pbuf in the chain. The
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* available data in the pbuf is given by the q->len
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* variable. */
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/* read data into(q->payload, q->len); */
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MEMCPY(q->payload, bufptr, q->len);
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bufptr += q->len;
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}
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/* Acknowledge that packet has been read(); */
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#if ETH_PAD_SIZE
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pbuf_header(p, ETH_PAD_SIZE); /* Reclaim the padding word */
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#endif
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LINK_STATS_INC(link.recv);
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} else {
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/* Drop packet(); */
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LINK_STATS_INC(link.memerr);
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LINK_STATS_INC(link.drop);
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}
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return p;
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}
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/**
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* This function should be called when a packet is ready to be read
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* from the interface. It uses the function low_level_input() that
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* should handle the actual reception of bytes from the network
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* interface. Then the type of the received packet is determined and
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* the appropriate input function is called.
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*
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* @param netif the lwip network interface structure for this ethernetif
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*/
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int ethernetif_input(const u8 *bssid, u8 *buf, u32 buf_len)
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{
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struct netif *netif = tls_get_netif();
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struct pbuf *p;
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#if TLS_CONFIG_AP
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u8* mac_addr = hostapd_get_mac();
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if (0 == compare_ether_addr(bssid, mac_addr))
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{
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netif = netif->next;
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}
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#endif
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/* move received packet into a new pbuf */
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p = low_level_input(netif, buf, buf_len);
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if (p) {
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if (ERR_OK != netif->input(p, netif)) {
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LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
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pbuf_free(p);
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p = NULL;
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}
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return 0;
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} else {
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return -1;
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}
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}
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#if LWIP_IGMP
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/***
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action:
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IGMP_DEL_MAC_FILTER 0
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IGMP_ADD_MAC_FILTER 1
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***/
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static err_t ethernetif_igmp_mac_filter(struct netif *netif,
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const ip4_addr_t *group, enum netif_mac_filter_action action)
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{
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u8 m_addr[6] = {0x01, 0x00, 0x5E};
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int ret = ERR_OK;
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if (netif != tls_get_netif())
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{
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return ERR_OK;
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}
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LWIP_DEBUGF(IGMP_DEBUG, ("IPaddr: %d.%d.%d.%d\n", ip4_addr1(group),
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ip4_addr2(group),
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ip4_addr3(group),
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ip4_addr4(group)));
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//create group mac address:
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memcpy(m_addr+3, (u8*)&(group->addr)+1, 3);
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m_addr[3] &= 0x7F; //clear bit24
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LWIP_DEBUGF(IGMP_DEBUG, ("MACaddr: %x:%x:%x:%x:%x:%x\n",m_addr[0],
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m_addr[1],
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m_addr[2],
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m_addr[3],
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m_addr[4],
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m_addr[5]));
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if(action == IGMP_ADD_MAC_FILTER)
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{
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ret = tls_hw_set_multicast_key(m_addr);
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}
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else if(action == IGMP_DEL_MAC_FILTER)
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{
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ret = tls_hw_del_multicast_key(m_addr);
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}
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if (ret < 0)
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return ret;
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else
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return ERR_OK;
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}
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#endif
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/**
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* Should be called at the beginning of the program to set up the
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* network interface. It calls the function low_level_init() to do the
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* actual setup of the hardware.
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*
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* This function should be passed as a parameter to netif_add().
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @return ERR_OK if the loopif is initialized
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* ERR_MEM if private data couldn't be allocated
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* any other err_t on error
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*/
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err_t
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ethernetif_init(struct netif *netif)
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{
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LWIP_ASSERT("netif != NULL", (netif != NULL));
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#if LWIP_NETIF_HOSTNAME
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#if TLS_CONFIG_AP
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u8* mac_addr = hostapd_get_mac();
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#else
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u8* mac_addr = wpa_supplicant_get_mac();
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#endif /* TLS_CONFIG_AP */
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u8_t hwaddr[NETIF_MAX_HWADDR_LEN];
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memcpy(&hwaddr[0], mac_addr, ETH_ALEN);
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char *prefix = "klyqa-";
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char *buf = (char *)tls_mem_calloc(1, strlen(prefix)+7);
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if (buf != NULL) {
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sprintf(buf, "%s%02X%02X%02X", prefix, hwaddr[NETIF_MAX_HWADDR_LEN-3], hwaddr[NETIF_MAX_HWADDR_LEN-2], hwaddr[NETIF_MAX_HWADDR_LEN-1]);
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/* Initialize interface hostname */
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memcpy(&netif->hostname, buf, sizeof(buf));
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tls_mem_free(buf);
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} else {
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LWIP_DEBUGF(IGMP_DEBUG, ("ethernetif_init: hostname memory allocation failed\n"));
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netif->hostname = "klyqa-XXXXXX";
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}
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LWIP_DEBUGF(IGMP_DEBUG, ("ethernetif_init: hostname set to: %s\n", netif->hostname));
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#endif /* LWIP_NETIF_HOSTNAME */
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/*
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* Initialize the snmp variables and counters inside the struct netif.
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* The last argument should be replaced with your link speed, in units
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* of bits per second.
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*/
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MIB2_INIT_NETIF(netif, snmp_ifType_ethernet_csmacd, NET_LINK_SPEED);
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netif->name[0] = IFNAME0;
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netif->name[1] = IFNAME1;
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/* We directly use etharp_output() here to save a function call.
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* You can instead declare your own function an call etharp_output()
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* from it if you have to do some checks before sending (e.g. if link
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* is available...) */
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netif->output = etharp_output;
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#if LWIP_IPV6
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netif->output_ip6 = ethip6_output;
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#endif /* LWIP_IPV6 */
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netif->linkoutput = low_level_output;
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#if TLS_CONFIG_AP_OPT_FWD
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netif->ipfwd_output = tcpip_output;
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#endif
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#if LWIP_IGMP
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netif->igmp_mac_filter = ethernetif_igmp_mac_filter;
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#endif
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/* initialize the hardware */
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low_level_init(netif);
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return ERR_OK;
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}
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#endif /* 0 */
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