This patch simplifies the tx code a bit and will be necessary for
the upcoming stlc45xx<->p54 port.
roughly speaking: we no longer have to tell all backend drivers twice, if we
want to free a frame right after it was send to the firmware, or not.
---
diff -Nurp a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c
--- a/drivers/net/wireless/p54/p54common.c 2008-12-09 20:49:21.235888230 +0100
+++ b/drivers/net/wireless/p54/p54common.c 2008-12-09 20:49:26.756375468 +0100
@@ -645,7 +645,7 @@ void p54_free_skb(struct ieee80211_hw *d
freed = priv->rx_end - last_addr;
__skb_unlink(skb, &priv->tx_queue);
spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
- kfree_skb(skb);
+ dev_kfree_skb_any(skb);
if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
@@ -1023,7 +1023,7 @@ int p54_read_eeprom(struct ieee80211_hw
eeprom_hdr->v2.magic2 = 0xf;
memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
}
- priv->tx(dev, skb, 0);
+ priv->tx(dev, skb);
if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
printk(KERN_ERR "%s: device does not respond!\n",
@@ -1064,7 +1064,7 @@ static int p54_set_tim(struct ieee80211_
tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
tim->count = 1;
tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1082,7 +1082,7 @@ static int p54_sta_unlock(struct ieee802
sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
memcpy(sta->addr, addr, ETH_ALEN);
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1125,7 +1125,7 @@ static int p54_tx_cancel(struct ieee8021
hdr = (void *)entry->data;
cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
cancel->req_id = hdr->req_id;
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1354,7 +1354,7 @@ static int p54_tx(struct ieee80211_hw *d
/* modifies skb->cb and with it info, so must be last! */
if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
goto err;
- priv->tx(dev, skb, 0);
+ priv->tx(dev, skb);
return 0;
err:
@@ -1429,7 +1429,7 @@ static int p54_setup_mac(struct ieee8021
setup->v2.lpf_bandwidth = cpu_to_le16(65535);
setup->v2.osc_start_delay = cpu_to_le16(65535);
}
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1510,7 +1510,7 @@ static int p54_scan(struct ieee80211_hw
chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
memset(chan->v2.rts_rates, 0, 8);
}
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
err:
@@ -1536,7 +1536,7 @@ static int p54_set_leds(struct ieee80211
led->led_permanent = cpu_to_le16(link);
led->led_temporary = cpu_to_le16(act);
led->duration = cpu_to_le16(1000);
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1576,7 +1576,7 @@ static int p54_set_edcf(struct ieee80211
edcf->flags = 0;
memset(edcf->mapping, 0, sizeof(edcf->mapping));
memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1886,7 +1886,7 @@ static int p54_init_xbow_synth(struct ie
xbow->magic2 = cpu_to_le16(0x2);
xbow->freq = cpu_to_le16(5390);
memset(xbow->padding, 0, sizeof(xbow->padding));
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
return 0;
}
@@ -1897,7 +1897,7 @@ static void p54_statistics_timer(unsigne
BUG_ON(!priv->cached_stats);
- priv->tx(dev, priv->cached_stats, 0);
+ priv->tx(dev, priv->cached_stats);
}
static int p54_get_stats(struct ieee80211_hw *dev,
@@ -2040,7 +2040,7 @@ static int p54_set_key(struct ieee80211_
[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
}
- priv->tx(dev, skb, 1);
+ priv->tx(dev, skb);
mutex_unlock(&priv->conf_mutex);
return 0;
}
diff -Nurp a/drivers/net/wireless/p54/p54common.h b/drivers/net/wireless/p54/p54common.h
--- a/drivers/net/wireless/p54/p54common.h 2008-12-07 22:04:45.956897502 +0100
+++ b/drivers/net/wireless/p54/p54common.h 2008-12-07 22:04:45.944898560 +0100
@@ -84,9 +84,6 @@ struct bootrec_desc {
#define BR_CODE_END_OF_BRA 0xFF0000FF
#define LEGACY_BR_CODE_END_OF_BRA 0xFFFFFFFF
-#define P54_HDR_FLAG_CONTROL BIT(15)
-#define P54_HDR_FLAG_CONTROL_OPSET (BIT(15) + BIT(0))
-
#define P54_HDR_FLAG_DATA_ALIGN BIT(14)
#define P54_HDR_FLAG_DATA_OUT_PROMISC BIT(0)
#define P54_HDR_FLAG_DATA_OUT_TIMESTAMP BIT(1)
diff -Nurp a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h
--- a/drivers/net/wireless/p54/p54.h 2008-12-07 22:04:45.952897552 +0100
+++ b/drivers/net/wireless/p54/p54.h 2008-12-09 17:46:17.988174098 +0100
@@ -44,6 +44,9 @@ enum p54_control_frame_types {
P54_CONTROL_TYPE_BT_OPTIONS = 35
};
+#define P54_HDR_FLAG_CONTROL BIT(15)
+#define P54_HDR_FLAG_CONTROL_OPSET (BIT(15) + BIT(0))
+
struct p54_hdr {
__le16 flags;
__le16 len;
@@ -54,6 +57,10 @@ struct p54_hdr {
u8 data[0];
} __attribute__ ((packed));
+#define FREE_AFTER_TX(skb) \
+ ((((struct p54_hdr *) ((struct sk_buff *) skb)->data)-> \
+ flags) == cpu_to_le16(P54_HDR_FLAG_CONTROL_OPSET))
+
struct p54_edcf_queue_param {
__le16 aifs;
__le16 cwmin;
@@ -74,8 +81,7 @@ struct p54_common {
u32 rx_start;
u32 rx_end;
struct sk_buff_head tx_queue;
- void (*tx)(struct ieee80211_hw *dev, struct sk_buff *skb,
- int free_on_tx);
+ void (*tx)(struct ieee80211_hw *dev, struct sk_buff *skb);
int (*open)(struct ieee80211_hw *dev);
void (*stop)(struct ieee80211_hw *dev);
int mode;
diff -Nurp a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
--- a/drivers/net/wireless/p54/p54pci.c 2008-12-07 22:04:45.952897552 +0100
+++ b/drivers/net/wireless/p54/p54pci.c 2008-12-07 22:04:45.936898241 +0100
@@ -227,7 +227,9 @@ static void p54p_check_tx_ring(struct ie
while (i != idx) {
desc = &ring[i];
- p54_free_skb(dev, tx_buf[i]);
+ if (tx_buf[i])
+ if (FREE_AFTER_TX((struct sk_buff *) tx_buf[i]))
+ p54_free_skb(dev, tx_buf[i]);
tx_buf[i] = NULL;
pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr),
@@ -298,8 +300,7 @@ static irqreturn_t p54p_interrupt(int ir
return reg ? IRQ_HANDLED : IRQ_NONE;
}
-static void p54p_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
- int free_on_tx)
+static void p54p_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct p54p_priv *priv = dev->priv;
struct p54p_ring_control *ring_control = priv->ring_control;
@@ -314,6 +315,7 @@ static void p54p_tx(struct ieee80211_hw
idx = le32_to_cpu(ring_control->host_idx[1]);
i = idx % ARRAY_SIZE(ring_control->tx_data);
+ priv->tx_buf_data[i] = skb;
mapping = pci_map_single(priv->pdev, skb->data, skb->len,
PCI_DMA_TODEVICE);
desc = &ring_control->tx_data[i];
@@ -324,10 +326,6 @@ static void p54p_tx(struct ieee80211_hw
wmb();
ring_control->host_idx[1] = cpu_to_le32(idx + 1);
-
- if (free_on_tx)
- priv->tx_buf_data[i] = skb;
-
spin_unlock_irqrestore(&priv->lock, flags);
P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
diff -Nurp a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c
--- a/drivers/net/wireless/p54/p54usb.c 2008-12-09 17:07:37.814752970 +0100
+++ b/drivers/net/wireless/p54/p54usb.c 2008-12-09 17:50:05.828203629 +0100
@@ -138,22 +138,16 @@ static void p54u_rx_cb(struct urb *urb)
}
}
-static void p54u_tx_reuse_skb_cb(struct urb *urb)
-{
- struct sk_buff *skb = urb->context;
- struct p54u_priv *priv = (struct p54u_priv *)((struct ieee80211_hw *)
- usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0)))->priv;
-
- skb_pull(skb, priv->common.tx_hdr_len);
-}
-
-static void p54u_tx_free_skb_cb(struct urb *urb)
+static void p54u_tx_cb(struct urb *urb)
{
struct sk_buff *skb = urb->context;
struct ieee80211_hw *dev = (struct ieee80211_hw *)
usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
+ struct p54u_priv *priv = dev->priv;
- p54_free_skb(dev, skb);
+ skb_pull(skb, priv->common.tx_hdr_len);
+ if (FREE_AFTER_TX(skb))
+ p54_free_skb(dev, skb);
}
static void p54u_tx_dummy_cb(struct urb *urb) { }
@@ -213,8 +207,7 @@ static int p54u_init_urbs(struct ieee802
return ret;
}
-static void p54u_tx_3887(struct ieee80211_hw *dev, struct sk_buff *skb,
- int free_on_tx)
+static void p54u_tx_3887(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct p54u_priv *priv = dev->priv;
struct urb *addr_urb, *data_urb;
@@ -236,9 +229,7 @@ static void p54u_tx_3887(struct ieee8021
p54u_tx_dummy_cb, dev);
usb_fill_bulk_urb(data_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
- skb->data, skb->len,
- free_on_tx ? p54u_tx_free_skb_cb :
- p54u_tx_reuse_skb_cb, skb);
+ skb->data, skb->len, p54u_tx_cb, skb);
usb_anchor_urb(addr_urb, &priv->submitted);
err = usb_submit_urb(addr_urb, GFP_ATOMIC);
@@ -273,8 +264,7 @@ static __le32 p54u_lm87_chksum(const __l
return cpu_to_le32(chk);
}
-static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb,
- int free_on_tx)
+static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct p54u_priv *priv = dev->priv;
struct urb *data_urb;
@@ -293,9 +283,7 @@ static void p54u_tx_lm87(struct ieee8021
usb_fill_bulk_urb(data_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
- skb->data, skb->len,
- free_on_tx ? p54u_tx_free_skb_cb :
- p54u_tx_reuse_skb_cb, skb);
+ skb->data, skb->len, p54u_tx_cb, skb);
usb_anchor_urb(data_urb, &priv->submitted);
if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
@@ -306,8 +294,7 @@ static void p54u_tx_lm87(struct ieee8021
usb_free_urb(data_urb);
}
-static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb,
- int free_on_tx)
+static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct p54u_priv *priv = dev->priv;
struct urb *int_urb, *data_urb;
@@ -354,9 +341,7 @@ static void p54u_tx_net2280(struct ieee8
usb_fill_bulk_urb(data_urb, priv->udev,
usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
- skb->data, skb->len,
- free_on_tx ? p54u_tx_free_skb_cb :
- p54u_tx_reuse_skb_cb, skb);
+ skb->data, skb->len, p54u_tx_cb, skb);
usb_anchor_urb(int_urb, &priv->submitted);
err = usb_submit_urb(int_urb, GFP_ATOMIC);