/* * Copyright (c) 2009 Atheros Communications Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/module.h> #include "ath.h" #include "trace.h" MODULE_AUTHOR("Atheros Communications"); MODULE_DESCRIPTION("Shared library for Atheros wireless LAN cards."); MODULE_LICENSE("Dual BSD/GPL"); struct sk_buff *ath_rxbuf_alloc(struct ath_common *common, u32 len, gfp_t gfp_mask) { struct sk_buff *skb; u32 off; /* * Cache-line-align. This is important (for the * 5210 at least) as not doing so causes bogus data * in rx'd frames. */ /* Note: the kernel can allocate a value greater than * what we ask it to give us. We really only need 4 KB as that * is this hardware supports and in fact we need at least 3849 * as that is the MAX AMSDU size this hardware supports. * Unfortunately this means we may get 8 KB here from the * kernel... and that is actually what is observed on some * systems :( */ skb = __dev_alloc_skb(len + common->cachelsz - 1, gfp_mask); if (skb != NULL) { off = ((unsigned long) skb->data) % common->cachelsz; if (off != 0) skb_reserve(skb, common->cachelsz - off); } else { pr_err("skbuff alloc of size %u failed\n", len); return NULL; } return skb; } EXPORT_SYMBOL(ath_rxbuf_alloc); bool ath_is_mybeacon(struct ath_common *common, struct ieee80211_hdr *hdr) { return ieee80211_is_beacon(hdr->frame_control) && !is_zero_ether_addr(common->curbssid) && ether_addr_equal_64bits(hdr->addr3, common->curbssid); } EXPORT_SYMBOL(ath_is_mybeacon); void ath_printk(const char *level, const struct ath_common* common, const char *fmt, ...) { struct va_format vaf; va_list args; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; if (common && common->hw && common->hw->wiphy) { printk("%sath: %s: %pV", level, wiphy_name(common->hw->wiphy), &vaf); trace_ath_log(common->hw->wiphy, &vaf); } else { printk("%sath: %pV", level, &vaf); } va_end(args); } EXPORT_SYMBOL(ath_printk); const char *ath_bus_type_strings[] = { [ATH_PCI] = "pci", [ATH_AHB] = "ahb", [ATH_USB] = "usb", }; EXPORT_SYMBOL(ath_bus_type_strings); |