diff options
Diffstat (limited to 'pfinet/linux-inet/eth.c')
| -rw-r--r-- | pfinet/linux-inet/eth.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/pfinet/linux-inet/eth.c b/pfinet/linux-inet/eth.c deleted file mode 100644 index cbd2c94b..00000000 --- a/pfinet/linux-inet/eth.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * INET An implementation of the TCP/IP protocol suite for the LINUX - * operating system. INET is implemented using the BSD Socket - * interface as the means of communication with the user level. - * - * Ethernet-type device handling. - * - * Version: @(#)eth.c 1.0.7 05/25/93 - * - * Authors: Ross Biro, <bir7@leland.Stanford.Edu> - * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> - * Mark Evans, <evansmp@uhura.aston.ac.uk> - * Florian La Roche, <rzsfl@rz.uni-sb.de> - * Alan Cox, <gw4pts@gw4pts.ampr.org> - * - * Fixes: - * Mr Linux : Arp problems - * Alan Cox : Generic queue tidyup (very tiny here) - * Alan Cox : eth_header ntohs should be htons - * Alan Cox : eth_rebuild_header missing an htons and - * minor other things. - * Tegge : Arp bug fixes. - * Florian : Removed many unnecessary functions, code cleanup - * and changes for new arp and skbuff. - * Alan Cox : Redid header building to reflect new format. - * Alan Cox : ARP only when compiled with CONFIG_INET - * Greg Page : 802.2 and SNAP stuff - * - * This program 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 - * 2 of the License, or (at your option) any later version. - */ -#include <asm/segment.h> -#include <asm/system.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/socket.h> -#include <linux/in.h> -#include <linux/inet.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/errno.h> -#include <linux/config.h> - -#include "arp.h" - -void eth_setup(char *str, int *ints) -{ - struct device *d = dev_base; - - if (!str || !*str) - return; - while (d) - { - if (!strcmp(str,d->name)) - { - if (ints[0] > 0) - d->irq=ints[1]; - if (ints[0] > 1) - d->base_addr=ints[2]; - if (ints[0] > 2) - d->mem_start=ints[3]; - if (ints[0] > 3) - d->mem_end=ints[4]; - break; - } - d=d->next; - } -} - - -/* - * Create the Ethernet MAC header for an arbitrary protocol layer - * - * saddr=NULL means use device source address - * daddr=NULL means leave destination address (eg unresolved arp) - */ - -int eth_header(unsigned char *buff, struct device *dev, unsigned short type, - void *daddr, void *saddr, unsigned len, - struct sk_buff *skb) -{ - struct ethhdr *eth = (struct ethhdr *)buff; - - /* - * Set the protocol type. For a packet of type ETH_P_802_3 we put the length - * in here instead. It is up to the 802.2 layer to carry protocol information. - */ - - if(type!=ETH_P_802_3) - eth->h_proto = htons(type); - else - eth->h_proto = htons(len); - - /* - * Set the source hardware address. - */ - - if(saddr) - memcpy(eth->h_source,saddr,dev->addr_len); - else - memcpy(eth->h_source,dev->dev_addr,dev->addr_len); - - /* - * Anyway, the loopback-device should never use this function... - */ - - if (dev->flags & IFF_LOOPBACK) - { - memset(eth->h_dest, 0, dev->addr_len); - return(dev->hard_header_len); - } - - if(daddr) - { - memcpy(eth->h_dest,daddr,dev->addr_len); - return dev->hard_header_len; - } - - return -dev->hard_header_len; -} - - -/* - * Rebuild the Ethernet MAC header. This is called after an ARP - * (or in future other address resolution) has completed on this - * sk_buff. We now let ARP fill in the other fields. - */ - -int eth_rebuild_header(void *buff, struct device *dev, unsigned long dst, - struct sk_buff *skb) -{ - struct ethhdr *eth = (struct ethhdr *)buff; - - /* - * Only ARP/IP is currently supported - */ - - if(eth->h_proto != htons(ETH_P_IP)) - { - printk("eth_rebuild_header: Don't know how to resolve type %d addresses?\n",(int)eth->h_proto); - memcpy(eth->h_source, dev->dev_addr, dev->addr_len); - return 0; - } - - /* - * Try and get ARP to resolve the header. - */ -#ifdef CONFIG_INET - return arp_find(eth->h_dest, dst, dev, dev->pa_addr, skb)? 1 : 0; -#else - return 0; -#endif -} - - -/* - * Determine the packet's protocol ID. The rule here is that we - * assume 802.3 if the type field is short enough to be a length. - * This is normal practice and works for any 'now in use' protocol. - */ - -unsigned short eth_type_trans(struct sk_buff *skb, struct device *dev) -{ - struct ethhdr *eth = (struct ethhdr *) skb->data; - unsigned char *rawp; - - if(*eth->h_dest&1) - { - if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0) - skb->pkt_type=PACKET_BROADCAST; - else - skb->pkt_type=PACKET_MULTICAST; - } - - if(dev->flags&IFF_PROMISC) - { - if(memcmp(eth->h_dest,dev->dev_addr, ETH_ALEN)) - skb->pkt_type=PACKET_OTHERHOST; - } - - if (ntohs(eth->h_proto) >= 1536) - return eth->h_proto; - - rawp = (unsigned char *)(eth + 1); - - if (*(unsigned short *)rawp == 0xFFFF) - return htons(ETH_P_802_3); - - return htons(ETH_P_802_2); -} |