2 * Copyright (c) 2009 Atheros Communications Inc.
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.
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.
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 #include <linux/kernel.h>
20 #include <linux/module.h>
24 MODULE_AUTHOR("Atheros Communications");
25 MODULE_DESCRIPTION("Shared library for Atheros wireless LAN cards.");
26 MODULE_LICENSE("Dual BSD/GPL");
28 struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
36 * Cache-line-align. This is important (for the
37 * 5210 at least) as not doing so causes bogus data
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
48 skb = __dev_alloc_skb(len + common->cachelsz - 1, gfp_mask);
50 off = ((unsigned long) skb->data) % common->cachelsz;
52 skb_reserve(skb, common->cachelsz - off);
54 pr_err("skbuff alloc of size %u failed\n", len);
60 EXPORT_SYMBOL(ath_rxbuf_alloc);
62 void ath_printk(const char *level, const struct ath_common* common,
73 if (common && common->hw && common->hw->wiphy)
74 printk("%sath: %s: %pV",
75 level, wiphy_name(common->hw->wiphy), &vaf);
77 printk("%sath: %pV", level, &vaf);
81 EXPORT_SYMBOL(ath_printk);