diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath.h | 30 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ath9k.h | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/recv.c | 40 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/main.c | 36 |
6 files changed, 75 insertions, 41 deletions
diff --git a/drivers/net/wireless/ath/Kconfig b/drivers/net/wireless/ath/Kconfig index 253b95a264b1..11ded150b932 100644 --- a/drivers/net/wireless/ath/Kconfig +++ b/drivers/net/wireless/ath/Kconfig @@ -5,9 +5,7 @@ menuconfig ATH_COMMON ---help--- This will enable the support for the Atheros wireless drivers. ath5k, ath9k and ar9170 drivers share some common code, this option - enables the common ath.ko module which currently shares just common - regulatory EEPROM helpers but will likely be extended later to share - more between modules. + enables the common ath.ko module which shares common helpers. For more information and documentation on this module you can visit: diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h new file mode 100644 index 000000000000..e284cd3ac6d4 --- /dev/null +++ b/drivers/net/wireless/ath/ath.h @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2008-2009 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. + */ + +#ifndef ATH_H +#define ATH_H + +#include <linux/skbuff.h> + +struct ath_common { + u16 cachelsz; +}; + +struct sk_buff *ath_rxbuf_alloc(struct ath_common *common, + u32 len, + gfp_t gfp_mask); + +#endif /* ATH_H */ diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 7a5a157e15c4..2fd663c01b8e 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -25,6 +25,7 @@ #include "hw.h" #include "rc.h" #include "debug.h" +#include "../ath.h" struct ath_node; @@ -532,6 +533,8 @@ struct ath_softc { struct ieee80211_hw *hw; struct device *dev; + struct ath_common common; + spinlock_t wiphy_lock; /* spinlock to protect ath_wiphy data */ struct ath_wiphy *pri_wiphy; struct ath_wiphy **sec_wiphy; /* secondary wiphys (virtual radios); may @@ -564,7 +567,6 @@ struct ath_softc { u32 sc_flags; /* SC_OP_* */ u16 curtxpow; u16 curaid; - u16 cachelsz; u8 nbcnvifs; u16 nvifs; u8 tx_chainmask; diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index efe2e856397c..b29d0ff74514 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1327,7 +1327,7 @@ static int ath_init_softc(u16 devid, struct ath_softc *sc) */ ath_read_cachesize(sc, &csz); /* XXX assert csz is non-zero */ - sc->cachelsz = csz << 2; /* convert to bytes */ + sc->common.cachelsz = csz << 2; /* convert to bytes */ ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); if (!ah) { diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 1a08c694fe5d..61dbdd227444 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -100,38 +100,6 @@ static u64 ath_extend_tsf(struct ath_softc *sc, u32 rstamp) return (tsf & ~0x7fff) | rstamp; } -static struct sk_buff *ath_rxbuf_alloc(struct ath_softc *sc, 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 + sc->cachelsz - 1, gfp_mask); - if (skb != NULL) { - off = ((unsigned long) skb->data) % sc->cachelsz; - if (off != 0) - skb_reserve(skb, sc->cachelsz - off); - } else { - DPRINTF(sc, ATH_DBG_FATAL, - "skbuff alloc of size %u failed\n", len); - return NULL; - } - - return skb; -} - /* * For Decrypt or Demic errors, we only mark packet status here and always push * up the frame up to let mac80211 handle the actual error case, be it no @@ -336,10 +304,10 @@ int ath_rx_init(struct ath_softc *sc, int nbufs) spin_lock_init(&sc->rx.rxbuflock); sc->rx.bufsize = roundup(IEEE80211_MAX_MPDU_LEN, - min(sc->cachelsz, (u16)64)); + min(sc->common.cachelsz, (u16)64)); DPRINTF(sc, ATH_DBG_CONFIG, "cachelsz %u rxbufsize %u\n", - sc->cachelsz, sc->rx.bufsize); + sc->common.cachelsz, sc->rx.bufsize); /* Initialize rx descriptors */ @@ -352,7 +320,7 @@ int ath_rx_init(struct ath_softc *sc, int nbufs) } list_for_each_entry(bf, &sc->rx.rxbuf, list) { - skb = ath_rxbuf_alloc(sc, sc->rx.bufsize, GFP_KERNEL); + skb = ath_rxbuf_alloc(&sc->common, sc->rx.bufsize, GFP_KERNEL); if (skb == NULL) { error = -ENOMEM; goto err; @@ -777,7 +745,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) /* Ensure we always have an skb to requeue once we are done * processing the current buffer's skb */ - requeue_skb = ath_rxbuf_alloc(sc, sc->rx.bufsize, GFP_ATOMIC); + requeue_skb = ath_rxbuf_alloc(&sc->common, sc->rx.bufsize, GFP_ATOMIC); /* If there is no memory we ignore the current RX'd frame, * tell hardware it can give us a new frame using the old diff --git a/drivers/net/wireless/ath/main.c b/drivers/net/wireless/ath/main.c index 9949b11cb151..487193f1de1a 100644 --- a/drivers/net/wireless/ath/main.c +++ b/drivers/net/wireless/ath/main.c @@ -17,6 +17,42 @@ #include <linux/kernel.h> #include <linux/module.h> +#include "ath.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 { + printk(KERN_ERR "skbuff alloc of size %u failed\n", len); + return NULL; + } + + return skb; +} +EXPORT_SYMBOL(ath_rxbuf_alloc); |