On 02/23/2012 12:50 PM, Attila Fazekas wrote:
Add AD-HOC support to the rtl8187 based on the rtl8180 source
Signed-off-by: Attila Fazekas<turul64@xxxxxxxxx>
---
drivers/net/wireless/rtl818x/rtl8187/dev.c | 110 +++++++++++++++++++----
drivers/net/wireless/rtl818x/rtl8187/rtl8187.h | 9 ++
2 files changed, 100 insertions(+), 19 deletions(-)
ACKed-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Sorry, it took me so long to test this. I was able to make an ad-hoc connection
between an RTL8187L and an RTL8187B. The beacon interval is very long, which is
why I was unable to see them earlier.
Do you know what sets that interval? Is it in the driver?
Larry
diff --git a/drivers/net/wireless/rtl818x/rtl8187/dev.c b/drivers/net/wireless/rtl818x/rtl8187/dev.c
index 638fbef..cf53ac9 100644
--- a/drivers/net/wireless/rtl818x/rtl8187/dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8187/dev.c
@@ -8,7 +8,7 @@
* Copyright 2005 Andrea Merello<andreamrl@xxxxxxxxxx>, et al.
*
* The driver was extended to the RTL8187B in 2008 by:
- * Herton Ronaldo Krzesinski<herton@xxxxxxxxxxxxxxx>
+ * Herton Ronaldo Krzesinski<herton@xxxxxxxxxxxxxxx>
* Hin-Tak Leung<htl10@xxxxxxxxxxxxxxxxxxxxx>
* Larry Finger<Larry.Finger@xxxxxxxxxxxx>
*
@@ -232,6 +232,7 @@ static void rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
{
struct rtl8187_priv *priv = dev->priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *tx_hdr = (struct ieee80211_hdr *)(skb->data);
unsigned int ep;
void *buf;
struct urb *urb;
@@ -249,7 +250,7 @@ static void rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
flags |= ieee80211_get_tx_rate(dev, info)->hw_value<< 24;
- if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
+ if (ieee80211_has_morefrags(tx_hdr->frame_control))
flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
if (info->control.rates[0].flags& IEEE80211_TX_RC_USE_RTS_CTS) {
flags |= RTL818X_TX_DESC_FLAG_RTS;
@@ -261,6 +262,13 @@ static void rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value<< 19;
}
+ if (info->flags& IEEE80211_TX_CTL_ASSIGN_SEQ) {
+ if (info->flags& IEEE80211_TX_CTL_FIRST_FRAGMENT)
+ priv->seqno += 0x10;
+ tx_hdr->seq_ctrl&= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ tx_hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
+ }
+
if (!priv->is_rtl8187b) {
struct rtl8187_tx_hdr *hdr =
(struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
@@ -274,8 +282,6 @@ static void rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
} else {
/* fc needs to be calculated before skb_push() */
unsigned int epmap[4] = { 6, 7, 5, 4 };
- struct ieee80211_hdr *tx_hdr =
- (struct ieee80211_hdr *)(skb->data);
u16 fc = le16_to_cpu(tx_hdr->frame_control);
struct rtl8187b_tx_hdr *hdr =
@@ -1031,10 +1037,61 @@ static void rtl8187_stop(struct ieee80211_hw *dev)
cancel_delayed_work_sync(&priv->work);
}
+static u64 rtl8187_get_tsf(struct ieee80211_hw *dev, struct ieee80211_vif *vif)
+{
+ struct rtl8187_priv *priv = dev->priv;
+
+ return rtl818x_ioread32(priv,&priv->map->TSFT[0]) |
+ (u64)(rtl818x_ioread32(priv,&priv->map->TSFT[1]))<< 32;
+}
+
+
+static void rtl8187_beacon_work(struct work_struct *work)
+{
+ struct rtl8187_vif *vif_priv =
+ container_of(work, struct rtl8187_vif, beacon_work.work);
+ struct ieee80211_vif *vif =
+ container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
+ struct ieee80211_hw *dev = vif_priv->dev;
+ struct ieee80211_mgmt *mgmt;
+ struct sk_buff *skb;
+
+ /* don't overflow the tx ring */
+ if (ieee80211_queue_stopped(dev, 0))
+ goto resched;
+
+ /* grab a fresh beacon */
+ skb = ieee80211_beacon_get(dev, vif);
+ if (!skb)
+ goto resched;
+
+ /*
+ * update beacon timestamp w/ TSF value
+ * TODO: make hardware update beacon timestamp
+ */
+ mgmt = (struct ieee80211_mgmt *)skb->data;
+ mgmt->u.beacon.timestamp = cpu_to_le64(rtl8187_get_tsf(dev, vif));
+
+ /* TODO: use actual beacon queue */
+ skb_set_queue_mapping(skb, 0);
+
+ rtl8187_tx(dev, skb);
+
+resched:
+ /*
+ * schedule next beacon
+ * TODO: use hardware support for beacon timing
+ */
+ schedule_delayed_work(&vif_priv->beacon_work,
+ usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
+}
+
+
static int rtl8187_add_interface(struct ieee80211_hw *dev,
struct ieee80211_vif *vif)
{
struct rtl8187_priv *priv = dev->priv;
+ struct rtl8187_vif *vif_priv;
int i;
int ret = -EOPNOTSUPP;
@@ -1044,6 +1101,7 @@ static int rtl8187_add_interface(struct ieee80211_hw *dev,
switch (vif->type) {
case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
break;
default:
goto exit;
@@ -1052,6 +1110,13 @@ static int rtl8187_add_interface(struct ieee80211_hw *dev,
ret = 0;
priv->vif = vif;
+ /* Initialize driver private area */
+ vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
+ vif_priv->dev = dev;
+ INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8187_beacon_work);
+ vif_priv->enable_beacon = false;
+
+
rtl818x_iowrite8(priv,&priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
for (i = 0; i< ETH_ALEN; i++)
rtl818x_iowrite8(priv,&priv->map->MAC[i],
@@ -1175,9 +1240,12 @@ static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
u32 changed)
{
struct rtl8187_priv *priv = dev->priv;
+ struct rtl8187_vif *vif_priv;
int i;
u8 reg;
+ vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
+
if (changed& BSS_CHANGED_BSSID) {
mutex_lock(&priv->conf_mutex);
for (i = 0; i< ETH_ALEN; i++)
@@ -1189,8 +1257,12 @@ static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
else
reg = 0;
- if (is_valid_ether_addr(info->bssid))
- reg |= RTL818X_MSR_INFRA;
+ if (is_valid_ether_addr(info->bssid)) {
+ if (vif->type == NL80211_IFTYPE_ADHOC)
+ reg |= RTL818X_MSR_ADHOC;
+ else
+ reg |= RTL818X_MSR_INFRA;
+ }
else
reg |= RTL818X_MSR_NO_LINK;
@@ -1202,6 +1274,16 @@ static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
if (changed& (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
rtl8187_conf_erp(priv, info->use_short_slot,
info->use_short_preamble);
+
+ if (changed& BSS_CHANGED_BEACON_ENABLED)
+ vif_priv->enable_beacon = info->enable_beacon;
+
+ if (changed& (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
+ cancel_delayed_work_sync(&vif_priv->beacon_work);
+ if (vif_priv->enable_beacon)
+ schedule_work(&vif_priv->beacon_work.work);
+ }
+
}
static u64 rtl8187_prepare_multicast(struct ieee80211_hw *dev,
@@ -1279,13 +1361,6 @@ static int rtl8187_conf_tx(struct ieee80211_hw *dev,
return 0;
}
-static u64 rtl8187_get_tsf(struct ieee80211_hw *dev, struct ieee80211_vif *vif)
-{
- struct rtl8187_priv *priv = dev->priv;
-
- return rtl818x_ioread32(priv,&priv->map->TSFT[0]) |
- (u64)(rtl818x_ioread32(priv,&priv->map->TSFT[1]))<< 32;
-}
static const struct ieee80211_ops rtl8187_ops = {
.tx = rtl8187_tx,
@@ -1514,12 +1589,9 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
if (reg& 0xFF00)
priv->rfkill_mask = RFKILL_MASK_8198;
}
-
- /*
- * XXX: Once this driver supports anything that requires
- * beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
- */
- dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+ dev->vif_data_size = sizeof(struct rtl8187_vif);
+ dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC) ;
if ((id->driver_info == DEVICE_RTL8187)&& priv->is_rtl8187b)
printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
diff --git a/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h b/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h
index f1cc907..e19a20a 100644
--- a/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h
+++ b/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h
@@ -89,6 +89,14 @@ enum {
DEVICE_RTL8187B
};
+struct rtl8187_vif {
+ struct ieee80211_hw *dev;
+
+ /* beaconing */
+ struct delayed_work beacon_work;
+ bool enable_beacon;
+};
+
struct rtl8187_priv {
/* common between rtl818x drivers */
struct rtl818x_csr *map;
@@ -141,6 +149,7 @@ struct rtl8187_priv {
__le32 bits32;
} *io_dmabuf;
bool rfkill_off;
+ u16 seqno;
};
void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data);
--
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