zd1211rw: port to mac80211

This seems to be working smoothly now. Let's not hold back the mac80211
transition any further. This patch ports the existing driver from softmac
to mac80211.

Many thanks to everyone who helped out with the porting efforts.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 53 insertions, 59 deletions

diff --git a/drivers/net/wireless/zd1211rw/zd_mac.h b/drivers/net/wireless/zd1211rw/zd_mac.h
index 1b15bde3ff6..ed5417ca2d1 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.h
+++ b/drivers/net/wireless/zd1211rw/zd_mac.h
@@ -18,14 +18,11 @@
 #ifndef _ZD_MAC_H
 #define _ZD_MAC_H
 
-#include <linux/wireless.h>
 #include <linux/kernel.h>
-#include <linux/workqueue.h>
-#include <net/ieee80211.h>
-#include <net/ieee80211softmac.h>
+#include <net/mac80211.h>
 
 #include "zd_chip.h"
-#include "zd_netdev.h"
+#include "zd_ieee80211.h"
 
 struct zd_ctrlset {
 	u8     modulation;
@@ -57,7 +54,7 @@ struct zd_ctrlset {
 /* The two possible modulation types. Notify that 802.11b doesn't use the CCK
  * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
  * consistent with uses the term at other places.
-  */
+ */
 #define ZD_CCK                  0x00
 #define ZD_OFDM                 0x10
 
@@ -141,58 +138,68 @@ struct rx_status {
 #define ZD_RX_CRC16_ERROR		0x40
 #define ZD_RX_ERROR			0x80
 
+enum mac_flags {
+	MAC_FIXED_CHANNEL = 0x01,
+};
+
 struct housekeeping {
 	struct delayed_work link_led_work;
 };
 
+/**
+ * struct zd_tx_skb_control_block - control block for tx skbuffs
+ * @control: &struct ieee80211_tx_control pointer
+ * @context: context pointer
+ *
+ * This structure is used to fill the cb field in an &sk_buff to transmit.
+ * The control field is NULL, if there is no requirement from the mac80211
+ * stack to report about the packet ACK. This is the case if the flag
+ * IEEE80211_TXCTL_NO_ACK is not set in &struct ieee80211_tx_control.
+ */
+struct zd_tx_skb_control_block {
+	struct ieee80211_tx_control *control;
+	struct ieee80211_hw *hw;
+	void *context;
+};
+
 #define ZD_MAC_STATS_BUFFER_SIZE 16
 
+#define ZD_MAC_MAX_ACK_WAITERS 10
+
 struct zd_mac {
 	struct zd_chip chip;
 	spinlock_t lock;
-	struct net_device *netdev;
-
-	/* Unlocked reading possible */
-	struct iw_statistics iw_stats;
-
+	struct ieee80211_hw *hw;
 	struct housekeeping housekeeping;
 	struct work_struct set_multicast_hash_work;
+	struct work_struct set_rts_cts_work;
+	struct work_struct set_rx_filter_work;
 	struct zd_mc_hash multicast_hash;
-	struct delayed_work set_rts_cts_work;
-	struct delayed_work set_basic_rates_work;
-
-	struct tasklet_struct rx_tasklet;
-	struct sk_buff_head rx_queue;
-
-	unsigned int stats_count;
-	u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
-	u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
 	u8 regdomain;
 	u8 default_regdomain;
-	u8 requested_channel;
-
-	/* A bitpattern of cr_rates */
-	u16 basic_rates;
-
-	/* A zd_rate */
-	u8 rts_rate;
+	int type;
+	int associated;
+	struct sk_buff_head ack_wait_queue;
+	struct ieee80211_channel channels[14];
+	struct ieee80211_rate rates[12];
+	struct ieee80211_hw_mode modes[2];
 
 	/* Short preamble (used for RTS/CTS) */
 	unsigned int short_preamble:1;
 
 	/* flags to indicate update in progress */
 	unsigned int updating_rts_rate:1;
-	unsigned int updating_basic_rates:1;
-};
 
-static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
-{
-	return zd_netdev_ieee80211(mac->netdev);
-}
+	/* whether to pass frames with CRC errors to stack */
+	unsigned int pass_failed_fcs:1;
 
-static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
+	/* whether to pass control frames to stack */
+	unsigned int pass_ctrl:1;
+};
+
+static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
 {
-	return ieee80211softmac_priv(netdev);
+	return hw->priv;
 }
 
 static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
@@ -205,35 +212,22 @@ static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
 	return zd_chip_to_mac(zd_usb_to_chip(usb));
 }
 
+static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac)
+{
+	return mac->hw->wiphy->perm_addr;
+}
+
 #define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
 
-int zd_mac_init(struct zd_mac *mac,
-                struct net_device *netdev,
-		struct usb_interface *intf);
+struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf);
 void zd_mac_clear(struct zd_mac *mac);
 
-int zd_mac_preinit_hw(struct zd_mac *mac);
-int zd_mac_init_hw(struct zd_mac *mac);
-
-int zd_mac_open(struct net_device *netdev);
-int zd_mac_stop(struct net_device *netdev);
-int zd_mac_set_mac_address(struct net_device *dev, void *p);
-void zd_mac_set_multicast_list(struct net_device *netdev);
-
-int zd_mac_rx_irq(struct zd_mac *mac, const u8 *buffer, unsigned int length);
-
-int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
-u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);
-
-int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
-u8 zd_mac_get_channel(struct zd_mac *mac);
-
-int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
-int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);
-
-int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);
+int zd_mac_preinit_hw(struct ieee80211_hw *hw);
+int zd_mac_init_hw(struct ieee80211_hw *hw);
 
-struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);
+int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length);
+void zd_mac_tx_failed(struct ieee80211_hw *hw);
+void zd_mac_tx_to_dev(struct sk_buff *skb, int error);
 
 #ifdef DEBUG
 void zd_dump_rx_status(const struct rx_status *status);