[people/ms/u-boot.git] / drivers / sk98lin / uboot_skb.c

/*
 * Definitions for the 'struct sk_buff' memory handlers in U-Boot.
 *
 * (C) Copyright 2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <config.h>

#ifdef CONFIG_SK98

#include <common.h>
#include "u-boot_compat.h"

#define MAX_SKB		50

static struct sk_buff *sk_table[MAX_SKB];


struct sk_buff * alloc_skb(u32 size, int dummy)
{
	int i;
	struct sk_buff * ret = NULL;

	for (i = 0; i < MAX_SKB; i++)
	{
		if (sk_table[i])
		{
				/* Already allocated.
				 */
			continue;
		}

		sk_table[i] = malloc(sizeof(struct sk_buff));
		if (! sk_table[i])
		{
			printf("alloc_skb: malloc failed\n");
			break;
		}

		memset(sk_table[i], 0, sizeof(struct sk_buff));
		sk_table[i]->data = sk_table[i]->data_unaligned =
		                                            malloc(size + 16);
		if (! sk_table[i]->data)
		{
			printf("alloc_skb: malloc failed\n");
			free(sk_table[i]);
			sk_table[i] = NULL;
			break;
		}

		sk_table[i]->data += 16 - ((u32)sk_table[i]->data & 15);
		sk_table[i]->len = size;

		break;
	}

	if (i < MAX_SKB)
	{
		ret = sk_table[i];
	}

	if (! ret)
	{
		printf("Unable to allocate skb!\n");
	}

	return ret;
}

void dev_kfree_skb_any(struct sk_buff *skb)
{
	int i;

	for (i = 0; i < MAX_SKB; i++)
	{
		if (sk_table[i] != skb)
		{
			continue;
		}

		free(skb->data_unaligned);
		free(skb);
		sk_table[i] = NULL;
		break;
	}

	if (i == MAX_SKB)
	{
		printf("SKB allocation error!\n");
	}
}

void skb_reserve(struct sk_buff *skb, unsigned int len)
{
	skb->data+=len;
}

void skb_put(struct sk_buff *skb, unsigned int len)
{
	skb->len+=len;
}

#endif /* CONFIG_SK98 */
Commit	Line	Data
7152b1d0 WD	1	/*
	2	* Definitions for the 'struct sk_buff' memory handlers in U-Boot.
	3	*
	4	* (C) Copyright 2003
	5	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	6	*
	7	* See file CREDITS for list of people who contributed to this
	8	* project.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License as
	12	* published by the Free Software Foundation; either version 2 of
	13	* the License, or (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	23	* MA 02111-1307 USA
	24	*/
	25
149dded2 WD	26	#include <config.h>
	27
	28	#ifdef CONFIG_SK98
	29
7152b1d0 WD	30	#include <common.h>
	31	#include "u-boot_compat.h"
	32
	33	#define MAX_SKB 50
	34
	35	static struct sk_buff *sk_table[MAX_SKB];
	36
	37
	38	struct sk_buff * alloc_skb(u32 size, int dummy)
	39	{
	40	int i;
	41	struct sk_buff * ret = NULL;
	42
	43	for (i = 0; i < MAX_SKB; i++)
	44	{
	45	if (sk_table[i])
	46	{
	47	/* Already allocated.
	48	*/
	49	continue;
	50	}
	51
	52	sk_table[i] = malloc(sizeof(struct sk_buff));
	53	if (! sk_table[i])
	54	{
	55	printf("alloc_skb: malloc failed\n");
	56	break;
	57	}
	58
	59	memset(sk_table[i], 0, sizeof(struct sk_buff));
	60	sk_table[i]->data = sk_table[i]->data_unaligned =
	61	malloc(size + 16);
	62	if (! sk_table[i]->data)
	63	{
	64	printf("alloc_skb: malloc failed\n");
	65	free(sk_table[i]);
	66	sk_table[i] = NULL;
	67	break;
	68	}
	69
	70	sk_table[i]->data += 16 - ((u32)sk_table[i]->data & 15);
	71	sk_table[i]->len = size;
42d1f039	72
7152b1d0 WD	73	break;
	74	}
	75
	76	if (i < MAX_SKB)
	77	{
	78	ret = sk_table[i];
	79	}
	80
	81	if (! ret)
	82	{
	83	printf("Unable to allocate skb!\n");
	84	}
	85
	86	return ret;
	87	}
	88
	89	void dev_kfree_skb_any(struct sk_buff *skb)
	90	{
	91	int i;
	92
	93	for (i = 0; i < MAX_SKB; i++)
	94	{
	95	if (sk_table[i] != skb)
	96	{
	97	continue;
	98	}
	99
	100	free(skb->data_unaligned);
	101	free(skb);
	102	sk_table[i] = NULL;
	103	break;
	104	}
	105
	106	if (i == MAX_SKB)
	107	{
	108	printf("SKB allocation error!\n");
	109	}
	110	}
	111
	112	void skb_reserve(struct sk_buff *skb, unsigned int len)
	113	{
	114	skb->data+=len;
	115	}
	116
	117	void skb_put(struct sk_buff *skb, unsigned int len)
	118	{
	119	skb->len+=len;
	120	}
149dded2 WD	121
149dded2 WD	122	#endif /* CONFIG_SK98 */