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path: root/drivers/net/wireless/at76c50x-usb.c
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Diffstat (limited to 'drivers/net/wireless/at76c50x-usb.c')
-rw-r--r--drivers/net/wireless/at76c50x-usb.c270
1 files changed, 149 insertions, 121 deletions
diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
index 8a2d4afc74f..d5140a87f07 100644
--- a/drivers/net/wireless/at76c50x-usb.c
+++ b/drivers/net/wireless/at76c50x-usb.c
@@ -7,6 +7,7 @@
* Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
* Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
* Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
+ * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -88,22 +89,19 @@
#define DBG_DEFAULTS 0
/* Use our own dbg macro */
-#define at76_dbg(bits, format, arg...) \
- do { \
- if (at76_debug & (bits)) \
- printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
- ## arg); \
- } while (0)
-
-#define at76_dbg_dump(bits, buf, len, format, arg...) \
- do { \
- if (at76_debug & (bits)) { \
- printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
- ## arg); \
- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, \
- buf, len); \
- } \
- } while (0)
+#define at76_dbg(bits, format, arg...) \
+do { \
+ if (at76_debug & (bits)) \
+ printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
+} while (0)
+
+#define at76_dbg_dump(bits, buf, len, format, arg...) \
+do { \
+ if (at76_debug & (bits)) { \
+ printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
+ } \
+} while (0)
static uint at76_debug = DBG_DEFAULTS;
@@ -305,7 +303,7 @@ struct dfu_status {
unsigned char poll_timeout[3];
unsigned char state;
unsigned char string;
-} __attribute__((packed));
+} __packed;
static inline int at76_is_intersil(enum board_type board)
{
@@ -657,8 +655,8 @@ static int at76_get_hw_config(struct at76_priv *priv)
exit:
kfree(hwcfg);
if (ret < 0)
- printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "cannot get hw config (error %d)\n",
+ ret);
return ret;
}
@@ -793,8 +791,9 @@ static int at76_wait_completion(struct at76_priv *priv, int cmd)
do {
status = at76_get_cmd_status(priv->udev, cmd);
if (status < 0) {
- printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
- wiphy_name(priv->hw->wiphy), status);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_cmd_status failed: %d\n",
+ status);
break;
}
@@ -809,9 +808,8 @@ static int at76_wait_completion(struct at76_priv *priv, int cmd)
schedule_timeout_interruptible(HZ / 10); /* 100 ms */
if (time_after(jiffies, timeout)) {
- printk(KERN_ERR
- "%s: completion timeout for command %d\n",
- wiphy_name(priv->hw->wiphy), cmd);
+ wiphy_err(priv->hw->wiphy,
+ "completion timeout for command %d\n", cmd);
status = -ETIMEDOUT;
break;
}
@@ -832,9 +830,9 @@ static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
ret = at76_wait_completion(priv, CMD_SET_MIB);
if (ret != CMD_STATUS_COMPLETE) {
- printk(KERN_INFO
- "%s: set_mib: at76_wait_completion failed "
- "with %d\n", wiphy_name(priv->hw->wiphy), ret);
+ wiphy_info(priv->hw->wiphy,
+ "set_mib: at76_wait_completion failed with %d\n",
+ ret);
ret = -EIO;
}
@@ -854,8 +852,8 @@ static int at76_set_radio(struct at76_priv *priv, int enable)
ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
if (ret < 0)
- printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
- wiphy_name(priv->hw->wiphy), cmd, ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_set_card_command(%d) failed: %d\n", cmd, ret);
else
ret = 1;
@@ -875,8 +873,8 @@ static int at76_set_pm_mode(struct at76_priv *priv)
ret = at76_set_mib(priv, &priv->mib_buf);
if (ret < 0)
- printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
+ ret);
return ret;
}
@@ -892,8 +890,8 @@ static int at76_set_preamble(struct at76_priv *priv, u8 type)
ret = at76_set_mib(priv, &priv->mib_buf);
if (ret < 0)
- printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
+ ret);
return ret;
}
@@ -909,8 +907,8 @@ static int at76_set_frag(struct at76_priv *priv, u16 size)
ret = at76_set_mib(priv, &priv->mib_buf);
if (ret < 0)
- printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "set_mib (frag threshold) failed: %d\n", ret);
return ret;
}
@@ -926,8 +924,7 @@ static int at76_set_rts(struct at76_priv *priv, u16 size)
ret = at76_set_mib(priv, &priv->mib_buf);
if (ret < 0)
- printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
return ret;
}
@@ -943,8 +940,8 @@ static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
ret = at76_set_mib(priv, &priv->mib_buf);
if (ret < 0)
- printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "set_mib (autorate fallback) failed: %d\n", ret);
return ret;
}
@@ -962,8 +959,8 @@ static void at76_dump_mib_mac_addr(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
sizeof(struct mib_mac_addr));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (mac_addr) failed: %d\n", ret);
goto exit;
}
@@ -991,8 +988,8 @@ static void at76_dump_mib_mac_wep(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
sizeof(struct mib_mac_wep));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (mac_wep) failed: %d\n", ret);
goto exit;
}
@@ -1028,8 +1025,8 @@ static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
sizeof(struct mib_mac_mgmt));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (mac_mgmt) failed: %d\n", ret);
goto exit;
}
@@ -1064,8 +1061,8 @@ static void at76_dump_mib_mac(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (mac) failed: %d\n", ret);
goto exit;
}
@@ -1101,8 +1098,8 @@ static void at76_dump_mib_phy(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (phy) failed: %d\n", ret);
goto exit;
}
@@ -1134,8 +1131,8 @@ static void at76_dump_mib_local(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (local) failed: %d\n", ret);
goto exit;
}
@@ -1160,8 +1157,8 @@ static void at76_dump_mib_mdomain(struct at76_priv *priv)
ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
sizeof(struct mib_mdomain));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "at76_get_mib (mdomain) failed: %d\n", ret);
goto exit;
}
@@ -1232,16 +1229,16 @@ static int at76_submit_rx_urb(struct at76_priv *priv)
struct sk_buff *skb = priv->rx_skb;
if (!priv->rx_urb) {
- printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
- wiphy_name(priv->hw->wiphy), __func__);
+ wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is null\n",
+ __func__);
return -EFAULT;
}
if (!skb) {
skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
if (!skb) {
- printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
- wiphy_name(priv->hw->wiphy));
+ wiphy_err(priv->hw->wiphy,
+ "cannot allocate rx skbuff\n");
ret = -ENOMEM;
goto exit;
}
@@ -1260,15 +1257,14 @@ static int at76_submit_rx_urb(struct at76_priv *priv)
at76_dbg(DBG_DEVSTART,
"usb_submit_urb returned -ENODEV");
else
- printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "rx, usb_submit_urb failed: %d\n", ret);
}
exit:
if (ret < 0 && ret != -ENODEV)
- printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
- "driver and/or power cycle the device\n",
- wiphy_name(priv->hw->wiphy));
+ wiphy_err(priv->hw->wiphy,
+ "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
return ret;
}
@@ -1437,8 +1433,8 @@ static int at76_startup_device(struct at76_priv *priv)
ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
sizeof(struct at76_card_config));
if (ret < 0) {
- printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
+ ret);
return ret;
}
@@ -1503,8 +1499,8 @@ static void at76_work_set_promisc(struct work_struct *work)
ret = at76_set_mib(priv, &priv->mib_buf);
if (ret < 0)
- printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy,
+ "set_mib (promiscuous_mode) failed: %d\n", ret);
mutex_unlock(&priv->mtx);
}
@@ -1649,6 +1645,58 @@ exit:
return NULL;
}
+static int at76_join(struct at76_priv *priv)
+{
+ struct at76_req_join join;
+ int ret;
+
+ memset(&join, 0, sizeof(struct at76_req_join));
+ memcpy(join.essid, priv->essid, priv->essid_size);
+ join.essid_size = priv->essid_size;
+ memcpy(join.bssid, priv->bssid, ETH_ALEN);
+ join.bss_type = INFRASTRUCTURE_MODE;
+ join.channel = priv->channel;
+ join.timeout = cpu_to_le16(2000);
+
+ at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
+ ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
+ sizeof(struct at76_req_join));
+
+ if (ret < 0) {
+ wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
+ ret);
+ return 0;
+ }
+
+ ret = at76_wait_completion(priv, CMD_JOIN);
+ at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
+ if (ret != CMD_STATUS_COMPLETE) {
+ wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
+ ret);
+ return 0;
+ }
+
+ at76_set_pm_mode(priv);
+
+ return 0;
+}
+
+static void at76_work_join_bssid(struct work_struct *work)
+{
+ struct at76_priv *priv = container_of(work, struct at76_priv,
+ work_join_bssid);
+
+ if (priv->device_unplugged)
+ return;
+
+ mutex_lock(&priv->mtx);
+
+ if (is_valid_ether_addr(priv->bssid))
+ at76_join(priv);
+
+ mutex_unlock(&priv->mtx);
+}
+
static void at76_mac80211_tx_callback(struct urb *urb)
{
struct at76_priv *priv = urb->context;
@@ -1686,16 +1734,32 @@ static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
struct at76_priv *priv = hw->priv;
struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
int padding, submit_len, ret;
at76_dbg(DBG_MAC80211, "%s()", __func__);
if (priv->tx_urb->status == -EINPROGRESS) {
- printk(KERN_ERR "%s: %s called while tx urb is pending\n",
- wiphy_name(priv->hw->wiphy), __func__);
+ wiphy_err(priv->hw->wiphy,
+ "%s called while tx urb is pending\n", __func__);
return NETDEV_TX_BUSY;
}
+ /* The following code lines are important when the device is going to
+ * authenticate with a new bssid. The driver must send CMD_JOIN before
+ * an authentication frame is transmitted. For this to succeed, the
+ * correct bssid of the AP must be known. As mac80211 does not inform
+ * drivers about the bssid prior to the authentication process the
+ * following workaround is necessary. If the TX frame is an
+ * authentication frame extract the bssid and send the CMD_JOIN. */
+ if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
+ if (compare_ether_addr(priv->bssid, mgmt->bssid)) {
+ memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
+ ieee80211_queue_work(hw, &priv->work_join_bssid);
+ return NETDEV_TX_BUSY;
+ }
+ }
+
ieee80211_stop_queues(hw);
at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
@@ -1725,13 +1789,12 @@ static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
submit_len, at76_mac80211_tx_callback, priv);
ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
if (ret) {
- printk(KERN_ERR "%s: error in tx submit urb: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
if (ret == -EINVAL)
- printk(KERN_ERR
- "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
- wiphy_name(priv->hw->wiphy), priv->tx_urb,
- priv->tx_urb->hcpriv, priv->tx_urb->complete);
+ wiphy_err(priv->hw->wiphy,
+ "-einval: tx urb %p hcpriv %p complete %p\n",
+ priv->tx_urb,
+ priv->tx_urb->hcpriv, priv->tx_urb->complete);
}
return 0;
@@ -1748,8 +1811,8 @@ static int at76_mac80211_start(struct ieee80211_hw *hw)
ret = at76_submit_rx_urb(priv);
if (ret < 0) {
- printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
+ wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
+ ret);
goto error;
}
@@ -1770,6 +1833,7 @@ static void at76_mac80211_stop(struct ieee80211_hw *hw)
at76_dbg(DBG_MAC80211, "%s()", __func__);
cancel_delayed_work(&priv->dwork_hw_scan);
+ cancel_work_sync(&priv->work_join_bssid);
cancel_work_sync(&priv->work_set_promisc);
mutex_lock(&priv->mtx);
@@ -1818,42 +1882,6 @@ static void at76_remove_interface(struct ieee80211_hw *hw,
at76_dbg(DBG_MAC80211, "%s()", __func__);
}
-static int at76_join(struct at76_priv *priv)
-{
- struct at76_req_join join;
- int ret;
-
- memset(&join, 0, sizeof(struct at76_req_join));
- memcpy(join.essid, priv->essid, priv->essid_size);
- join.essid_size = priv->essid_size;
- memcpy(join.bssid, priv->bssid, ETH_ALEN);
- join.bss_type = INFRASTRUCTURE_MODE;
- join.channel = priv->channel;
- join.timeout = cpu_to_le16(2000);
-
- at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
- ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
- sizeof(struct at76_req_join));
-
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
- return 0;
- }
-
- ret = at76_wait_completion(priv, CMD_JOIN);
- at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
- if (ret != CMD_STATUS_COMPLETE) {
- printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
- wiphy_name(priv->hw->wiphy), ret);
- return 0;
- }
-
- at76_set_pm_mode(priv);
-
- return 0;
-}
-
static void at76_dwork_hw_scan(struct work_struct *work)
{
struct at76_priv *priv = container_of(work, struct at76_priv,
@@ -2107,6 +2135,7 @@ static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
mutex_init(&priv->mtx);
INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
+ INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
@@ -2281,14 +2310,12 @@ static int at76_init_new_device(struct at76_priv *priv,
priv->mac80211_registered = 1;
- printk(KERN_INFO "%s: USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
- wiphy_name(priv->hw->wiphy),
- dev_name(&interface->dev), priv->mac_addr,
- priv->fw_version.major, priv->fw_version.minor,
- priv->fw_version.patch, priv->fw_version.build);
- printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
- wiphy_name(priv->hw->wiphy),
- priv->regulatory_domain, priv->domain->name);
+ wiphy_info(priv->hw->wiphy, "usb %s, mac %pm, firmware %d.%d.%d-%d\n",
+ dev_name(&interface->dev), priv->mac_addr,
+ priv->fw_version.major, priv->fw_version.minor,
+ priv->fw_version.patch, priv->fw_version.build);
+ wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
+ priv->regulatory_domain, priv->domain->name);
exit:
return ret;
@@ -2450,7 +2477,7 @@ static void at76_disconnect(struct usb_interface *interface)
if (!priv)
return;
- printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
+ wiphy_info(priv->hw->wiphy, "disconnecting\n");
at76_delete_device(priv);
dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
}
@@ -2508,5 +2535,6 @@ MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
+MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-26 09:35:46 +0000