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/* Emulates Linux sk buffers using hartik net buffers... */
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#include <kernel/kern.h>
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#include <semaphore.h>
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#include "../net/netbuff.h"
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#include "../net/eth_priv.h"
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#include"linux/skbuff.h"
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#define LOWLEV_TX_BUFFERS 50
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#define LOWLEV_RX_BUFFERS 50
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struct netbuff rxbuff;
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struct netbuff lowlevel_txbuff;
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void skb_init(void)
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{
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        netbuff_init(&lowlevel_txbuff, LOWLEV_TX_BUFFERS, ETH_MAX_LEN);
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        netbuff_init(&rxbuff, LOWLEV_RX_BUFFERS, ETH_MAX_LEN);
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}
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struct sk_buff *dev_alloc_skb(unsigned int len)
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{
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        struct sk_buff *skb;
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        kern_cli();
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        skb = kern_alloc(sizeof(struct sk_buff));
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        kern_sti();
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        skb->data = netbuff_get(&rxbuff, NON_BLOCK);
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        if (skb->data == NULL) {
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                        return NULL;
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        }
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        skb->head = skb->data;
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        skb->tail = skb->data;
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        skb->len = 0;
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        return skb;
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}
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void skb_reserve(struct sk_buff *skb, int len)
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{
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        /* Do nothing... */
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}
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unsigned char *skb_put(struct sk_buff *skb, int len)
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{
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        unsigned char *tmp=skb->tail;
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        skb->tail+=len;
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        skb->len+=len;
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        return tmp;
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}
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void skb_queue_head_init(struct sk_buff_head *list)
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{    
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        list->prev = (struct sk_buff *)list;
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        list->next = (struct sk_buff *)list;
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        list->qlen = 0;
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}