118 lines
2.3 KiB
C
118 lines
2.3 KiB
C
/*
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* Definitions for the 'struct sk_buff' memory handlers in U-Boot.
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*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#include <common.h>
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#include "u-boot_compat.h"
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#define MAX_SKB 50
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static struct sk_buff *sk_table[MAX_SKB];
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struct sk_buff * alloc_skb(u32 size, int dummy)
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{
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int i;
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struct sk_buff * ret = NULL;
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for (i = 0; i < MAX_SKB; i++)
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{
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if (sk_table[i])
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{
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/* Already allocated.
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*/
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continue;
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}
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sk_table[i] = malloc(sizeof(struct sk_buff));
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if (! sk_table[i])
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{
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printf("alloc_skb: malloc failed\n");
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break;
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}
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memset(sk_table[i], 0, sizeof(struct sk_buff));
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sk_table[i]->data = sk_table[i]->data_unaligned =
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malloc(size + 16);
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if (! sk_table[i]->data)
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{
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printf("alloc_skb: malloc failed\n");
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free(sk_table[i]);
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sk_table[i] = NULL;
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break;
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}
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sk_table[i]->data += 16 - ((u32)sk_table[i]->data & 15);
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sk_table[i]->len = size;
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break;
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}
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if (i < MAX_SKB)
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{
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ret = sk_table[i];
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}
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if (! ret)
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{
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printf("Unable to allocate skb!\n");
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}
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return ret;
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}
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void dev_kfree_skb_any(struct sk_buff *skb)
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{
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int i;
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for (i = 0; i < MAX_SKB; i++)
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{
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if (sk_table[i] != skb)
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{
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continue;
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}
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free(skb->data_unaligned);
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free(skb);
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sk_table[i] = NULL;
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break;
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}
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if (i == MAX_SKB)
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{
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printf("SKB allocation error!\n");
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}
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}
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void skb_reserve(struct sk_buff *skb, unsigned int len)
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{
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skb->data+=len;
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}
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void skb_put(struct sk_buff *skb, unsigned int len)
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{
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skb->len+=len;
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}
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