1/*
 2 * Copyright (c) 2009 Atheros Communications Inc.
 3 *
 4 * Permission to use, copy, modify, and/or distribute this software for any
 5 * purpose with or without fee is hereby granted, provided that the above
 6 * copyright notice and this permission notice appear in all copies.
 7 *
 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
 
 
17#include <linux/kernel.h>
18#include <linux/module.h>
19
20#include "ath.h"
21
22MODULE_AUTHOR("Atheros Communications");
23MODULE_DESCRIPTION("Shared library for Atheros wireless LAN cards.");
24MODULE_LICENSE("Dual BSD/GPL");
25
26struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
27				u32 len,
28				gfp_t gfp_mask)
29{
30	struct sk_buff *skb;
31	u32 off;
32
33	/*
34	 * Cache-line-align.  This is important (for the
35	 * 5210 at least) as not doing so causes bogus data
36	 * in rx'd frames.
37	 */
38
39	/* Note: the kernel can allocate a value greater than
40	 * what we ask it to give us. We really only need 4 KB as that
41	 * is this hardware supports and in fact we need at least 3849
42	 * as that is the MAX AMSDU size this hardware supports.
43	 * Unfortunately this means we may get 8 KB here from the
44	 * kernel... and that is actually what is observed on some
45	 * systems :( */
46	skb = __dev_alloc_skb(len + common->cachelsz - 1, gfp_mask);
47	if (skb != NULL) {
48		off = ((unsigned long) skb->data) % common->cachelsz;
49		if (off != 0)
50			skb_reserve(skb, common->cachelsz - off);
51	} else {
52		printk(KERN_ERR "skbuff alloc of size %u failed\n", len);
53		return NULL;
54	}
55
56	return skb;
57}
58EXPORT_SYMBOL(ath_rxbuf_alloc);
59
60int ath_printk(const char *level, struct ath_common *common,
61	       const char *fmt, ...)
62{
63	struct va_format vaf;
64	va_list args;
65	int rtn;
66
67	va_start(args, fmt);
68
69	vaf.fmt = fmt;
70	vaf.va = &args;
71
72	rtn = printk("%sath: %pV", level, &vaf);
 
 
 
 
73
74	va_end(args);
75
76	return rtn;
77}
78EXPORT_SYMBOL(ath_printk);

 1/*
 2 * Copyright (c) 2009 Atheros Communications Inc.
 3 *
 4 * Permission to use, copy, modify, and/or distribute this software for any
 5 * purpose with or without fee is hereby granted, provided that the above
 6 * copyright notice and this permission notice appear in all copies.
 7 *
 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19#include <linux/kernel.h>
20#include <linux/module.h>
21
22#include "ath.h"
23
24MODULE_AUTHOR("Atheros Communications");
25MODULE_DESCRIPTION("Shared library for Atheros wireless LAN cards.");
26MODULE_LICENSE("Dual BSD/GPL");
27
28struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
29				u32 len,
30				gfp_t gfp_mask)
31{
32	struct sk_buff *skb;
33	u32 off;
34
35	/*
36	 * Cache-line-align.  This is important (for the
37	 * 5210 at least) as not doing so causes bogus data
38	 * in rx'd frames.
39	 */
40
41	/* Note: the kernel can allocate a value greater than
42	 * what we ask it to give us. We really only need 4 KB as that
43	 * is this hardware supports and in fact we need at least 3849
44	 * as that is the MAX AMSDU size this hardware supports.
45	 * Unfortunately this means we may get 8 KB here from the
46	 * kernel... and that is actually what is observed on some
47	 * systems :( */
48	skb = __dev_alloc_skb(len + common->cachelsz - 1, gfp_mask);
49	if (skb != NULL) {
50		off = ((unsigned long) skb->data) % common->cachelsz;
51		if (off != 0)
52			skb_reserve(skb, common->cachelsz - off);
53	} else {
54		pr_err("skbuff alloc of size %u failed\n", len);
55		return NULL;
56	}
57
58	return skb;
59}
60EXPORT_SYMBOL(ath_rxbuf_alloc);
61
62void ath_printk(const char *level, const struct ath_common* common,
63		const char *fmt, ...)
64{
65	struct va_format vaf;
66	va_list args;
 
67
68	va_start(args, fmt);
69
70	vaf.fmt = fmt;
71	vaf.va = &args;
72
73	if (common && common->hw && common->hw->wiphy)
74		printk("%sath: %s: %pV",
75		       level, wiphy_name(common->hw->wiphy), &vaf);
76	else
77		printk("%sath: %pV", level, &vaf);
78
79	va_end(args);
 
 
80}
81EXPORT_SYMBOL(ath_printk);