From 348fa3f6871f56a37dcd16c99ca98118c6d79a38 Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Mon, 4 Mar 2019 12:01:54 +0100 Subject: Backports v4.19.24 Backports generated by toradex backports 515a1fa55cda2b1d952872e1786857481bd54fcc against mainline kernel tag v4.19.24 Signed-off-by: Dominik Sliwa --- drivers/net/wireless/ath/main.c | 99 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 drivers/net/wireless/ath/main.c (limited to 'drivers/net/wireless/ath/main.c') diff --git a/drivers/net/wireless/ath/main.c b/drivers/net/wireless/ath/main.c new file mode 100644 index 0000000..89f4b05 --- /dev/null +++ b/drivers/net/wireless/ath/main.c @@ -0,0 +1,99 @@ +/* + * 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 +#include + +#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); -- cgit v1.2.3