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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Emulates Linux sk buffers using hartik net buffers... */ |
| 2 | |||
| 3 | #include <kernel/kern.h> |
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| 4 | #include <semaphore.h> |
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| 5 | |||
| 6 | #include "../net/netbuff.h" |
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| 7 | #include "../net/eth_priv.h" |
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| 8 | |||
| 9 | #include"linux/skbuff.h" |
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| 10 | |||
| 11 | #define LOWLEV_TX_BUFFERS 50 |
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| 12 | #define LOWLEV_RX_BUFFERS 50 |
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| 13 | struct netbuff rxbuff; |
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| 14 | struct netbuff lowlevel_txbuff; |
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| 15 | |||
| 16 | void skb_init(void) |
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| 17 | { |
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| 18 | netbuff_init(&lowlevel_txbuff, LOWLEV_TX_BUFFERS, ETH_MAX_LEN); |
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| 19 | netbuff_init(&rxbuff, LOWLEV_RX_BUFFERS, ETH_MAX_LEN); |
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| 20 | } |
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| 21 | |||
| 22 | struct sk_buff *dev_alloc_skb(unsigned int len) |
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| 23 | { |
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| 24 | struct sk_buff *skb; |
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| 25 | |||
| 26 | kern_cli(); |
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| 27 | skb = kern_alloc(sizeof(struct sk_buff)); |
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| 28 | kern_sti(); |
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| 29 | |||
| 30 | skb->data = netbuff_get(&rxbuff, NON_BLOCK); |
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| 31 | if (skb->data == NULL) { |
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| 32 | return NULL; |
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| 33 | } |
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| 34 | skb->head = skb->data; |
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| 35 | skb->tail = skb->data; |
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| 36 | skb->len = 0; |
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| 37 | |||
| 38 | return skb; |
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| 39 | } |
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| 40 | |||
| 41 | void skb_reserve(struct sk_buff *skb, int len) |
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| 42 | { |
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| 43 | /* Do nothing... */ |
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| 44 | } |
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| 45 | |||
| 46 | unsigned char *skb_put(struct sk_buff *skb, int len) |
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| 47 | { |
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| 48 | unsigned char *tmp=skb->tail; |
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| 49 | |||
| 50 | skb->tail+=len; |
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| 51 | skb->len+=len; |
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| 52 | |||
| 53 | return tmp; |
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| 54 | } |
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| 55 | |||
| 56 | void skb_queue_head_init(struct sk_buff_head *list) |
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| 57 | { |
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| 58 | list->prev = (struct sk_buff *)list; |
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| 59 | list->next = (struct sk_buff *)list; |
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| 60 | list->qlen = 0; |
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| 61 | } |