eth.c

来自「基于dsp 5509a关于EMAC通信的测试」· C语言 代码 · 共 49 行

#include "skbuff.h"
#include "eth.h"
#include "Emac.h"


int eth_init(void)
{
   return EmacInitial();
}

int eth_send(struct sk_buff *skb, unsigned char *dest_addr, unsigned short proto)
{
	struct ethhdr *eth_hdr;
	unsigned char local_eth_addr[ETH_ALEN];
	Uint32 i;

	eth_get_addr(local_eth_addr);
	eth_hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);

	memcpy((unsigned char *)eth_hdr->h_dest, dest_addr, ETH_ALEN);
	memcpy((unsigned char *)eth_hdr->h_source, local_eth_addr, ETH_ALEN);
   
    i=htons(proto);
	eth_hdr->h_proto[0]=i&0x00ff;
	i=(i>>8);
	eth_hdr->h_proto[1]=i&0x00ff;

    return Emac_Send(skb);
}


int eth_rcv(struct sk_buff *skb)
{
   return 0;  
}	

int eth_get_addr(unsigned char *addr)
{
    return Emac_Get_Addr(addr);
}

void eth_skb_reserve(struct sk_buff *skb)
{
	skb_reserve(skb, ETH_HLEN);
}