From: Sujith Manoharan <sujith.manoha...@atheros.com>
For all packets sent through the USB_WLAN_TX_PIPE endpoint,
the private area of the SKB's tx_info can be used to store
driver-specific information. For packets sent through USB_REG_OUT_PIPE,
this will not make a difference since they are routed through a
separate routine that doesn't access the private region.
This would help in situations where TX information is required
in the URB callback.
Signed-off-by: Sujith Manoharan <sujith.manoha...@atheros.com>
---
drivers/net/wireless/ath/ath9k/hif_usb.c | 17 +++++++++--------
drivers/net/wireless/ath/ath9k/htc.h | 14 +++++++++++++-
drivers/net/wireless/ath/ath9k/htc_drv_beacon.c | 11 +++++++----
drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 15 ++++++++-------
drivers/net/wireless/ath/ath9k/htc_hst.c | 18 +++++++++---------
drivers/net/wireless/ath/ath9k/htc_hst.h | 5 ++---
drivers/net/wireless/ath/ath9k/wmi.c | 2 +-
7 files changed, 49 insertions(+), 33 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c
b/drivers/net/wireless/ath/ath9k/hif_usb.c
index 5ab3084..2c96960 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -282,9 +282,9 @@ static int __hif_usb_tx(struct hif_device_usb *hif_dev)
return ret;
}
-static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
- struct ath9k_htc_tx_ctl *tx_ctl)
+static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb)
{
+ struct ath9k_htc_tx_ctl *tx_ctl;
unsigned long flags;
spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
@@ -303,12 +303,14 @@ static int hif_usb_send_tx(struct hif_device_usb
*hif_dev, struct sk_buff *skb,
__skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
hif_dev->tx.tx_skb_cnt++;
- /* Send normal frames immediately */
- if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
+ tx_ctl = HTC_SKB_CB(skb);
+
+ /* Send normal/mgmt/beacon frames immediately */
+ if (tx_ctl->type != ATH9K_HTC_AMPDU)
__hif_usb_tx(hif_dev);
/* Check if AMPDUs have to be sent immediately */
- if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
+ if ((tx_ctl->type == ATH9K_HTC_AMPDU) &&
(hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
(hif_dev->tx.tx_skb_cnt < 2)) {
__hif_usb_tx(hif_dev);
@@ -350,15 +352,14 @@ static void hif_usb_stop(void *hif_handle, u8 pipe_id)
}
}
-static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
- struct ath9k_htc_tx_ctl *tx_ctl)
+static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb)
{
struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
int ret = 0;
switch (pipe_id) {
case USB_WLAN_TX_PIPE:
- ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
+ ret = hif_usb_send_tx(hif_dev, skb);
break;
case USB_REG_OUT_PIPE:
ret = hif_usb_send_regout(hif_dev, skb);
diff --git a/drivers/net/wireless/ath/ath9k/htc.h
b/drivers/net/wireless/ath/ath9k/htc.h
index ed82bba..ec3511d 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -67,8 +67,11 @@ enum htc_opmode {
};
#define ATH9K_HTC_HDRSPACE sizeof(struct htc_frame_hdr)
-#define ATH9K_HTC_AMPDU 1
+
+#define ATH9K_HTC_AMPDU 1
#define ATH9K_HTC_NORMAL 2
+#define ATH9K_HTC_BEACON 3
+#define ATH9K_HTC_MGMT 4
#define ATH9K_HTC_TX_CTSONLY 0x1
#define ATH9K_HTC_TX_RTSCTS 0x2
@@ -287,6 +290,15 @@ struct ath9k_htc_tx_ctl {
u8 type; /* ATH9K_HTC_* */
};
+static inline struct ath9k_htc_tx_ctl *HTC_SKB_CB(struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+
+ BUILD_BUG_ON(sizeof(struct ath9k_htc_tx_ctl) >
+ IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
+ return (struct ath9k_htc_tx_ctl *) &tx_info->driver_data;
+}
+
#ifdef CONFIG_ATH9K_HTC_DEBUGFS
#define TX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
index 15b149e..d23426f 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
@@ -345,7 +345,7 @@ static void ath9k_htc_send_beacon(struct ath9k_htc_priv
*priv,
struct ieee80211_vif *vif;
struct ath9k_htc_vif *avp;
struct tx_beacon_header beacon_hdr;
- struct ath9k_htc_tx_ctl tx_ctl;
+ struct ath9k_htc_tx_ctl *tx_ctl;
struct ieee80211_tx_info *info;
struct ieee80211_mgmt *mgmt;
struct sk_buff *beacon;
@@ -353,7 +353,6 @@ static void ath9k_htc_send_beacon(struct ath9k_htc_priv
*priv,
int ret;
memset(&beacon_hdr, 0, sizeof(struct tx_beacon_header));
- memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
spin_lock_bh(&priv->beacon_lock);
@@ -388,12 +387,16 @@ static void ath9k_htc_send_beacon(struct ath9k_htc_priv
*priv,
hdr->seq_ctrl |= cpu_to_le16(avp->seq_no);
}
- tx_ctl.type = ATH9K_HTC_NORMAL;
+ tx_ctl = HTC_SKB_CB(beacon);
+ memset(tx_ctl, 0, sizeof(*tx_ctl));
+
+ tx_ctl->type = ATH9K_HTC_BEACON;
+
beacon_hdr.vif_index = avp->index;
tx_fhdr = skb_push(beacon, sizeof(beacon_hdr));
memcpy(tx_fhdr, (u8 *) &beacon_hdr, sizeof(beacon_hdr));
- ret = htc_send(priv->htc, beacon, priv->beacon_ep, &tx_ctl);
+ ret = htc_send(priv->htc, beacon, priv->beacon_ep);
if (ret != 0) {
if (ret == -ENOMEM) {
ath_dbg(common, ATH_DBG_BSTUCK,
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 458164f..7357e70 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -89,13 +89,16 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif = tx_info->control.vif;
struct ath9k_htc_sta *ista;
struct ath9k_htc_vif *avp = NULL;
- struct ath9k_htc_tx_ctl tx_ctl;
+ struct ath9k_htc_tx_ctl *tx_ctl;
enum htc_endpoint_id epid;
u16 qnum;
__le16 fc;
u8 *tx_fhdr;
u8 sta_idx, vif_idx;
+ tx_ctl = HTC_SKB_CB(skb);
+ memset(tx_ctl, 0, sizeof(*tx_ctl));
+
hdr = (struct ieee80211_hdr *) skb->data;
fc = hdr->frame_control;
@@ -126,8 +129,6 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
sta_idx = priv->vif_sta_pos[vif_idx];
}
- memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
-
if (ieee80211_is_data(fc)) {
struct tx_frame_hdr tx_hdr;
u32 flags = 0;
@@ -139,10 +140,10 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
tx_hdr.vif_idx = vif_idx;
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
- tx_ctl.type = ATH9K_HTC_AMPDU;
+ tx_ctl->type = ATH9K_HTC_AMPDU;
tx_hdr.data_type = ATH9K_HTC_AMPDU;
} else {
- tx_ctl.type = ATH9K_HTC_NORMAL;
+ tx_ctl->type = ATH9K_HTC_NORMAL;
tx_hdr.data_type = ATH9K_HTC_NORMAL;
}
@@ -212,7 +213,7 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
mgmt->u.probe_resp.timestamp = avp->tsfadjust;
}
- tx_ctl.type = ATH9K_HTC_NORMAL;
+ tx_ctl->type = ATH9K_HTC_MGMT;
mgmt_hdr.node_idx = sta_idx;
mgmt_hdr.vif_idx = vif_idx;
@@ -230,7 +231,7 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
epid = priv->mgmt_ep;
}
send:
- return htc_send(priv->htc, skb, epid, &tx_ctl);
+ return htc_send(priv->htc, skb, epid);
}
static bool ath9k_htc_check_tx_aggr(struct ath9k_htc_priv *priv,
diff --git a/drivers/net/wireless/ath/ath9k/htc_hst.c
b/drivers/net/wireless/ath/ath9k/htc_hst.c
index c41ab8c..6ee53de 100644
--- a/drivers/net/wireless/ath/ath9k/htc_hst.c
+++ b/drivers/net/wireless/ath/ath9k/htc_hst.c
@@ -17,8 +17,8 @@
#include "htc.h"
static int htc_issue_send(struct htc_target *target, struct sk_buff* skb,
- u16 len, u8 flags, u8 epid,
- struct ath9k_htc_tx_ctl *tx_ctl)
+ u16 len, u8 flags, u8 epid)
+
{
struct htc_frame_hdr *hdr;
struct htc_endpoint *endpoint = &target->endpoint[epid];
@@ -30,8 +30,8 @@ static int htc_issue_send(struct htc_target *target, struct
sk_buff* skb,
hdr->flags = flags;
hdr->payload_len = cpu_to_be16(len);
- status = target->hif->send(target->hif_dev, endpoint->ul_pipeid, skb,
- tx_ctl);
+ status = target->hif->send(target->hif_dev, endpoint->ul_pipeid, skb);
+
return status;
}
@@ -162,7 +162,7 @@ static int htc_config_pipe_credits(struct htc_target
*target)
target->htc_flags |= HTC_OP_CONFIG_PIPE_CREDITS;
- ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0, NULL);
+ ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0);
if (ret)
goto err;
@@ -197,7 +197,7 @@ static int htc_setup_complete(struct htc_target *target)
target->htc_flags |= HTC_OP_START_WAIT;
- ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0, NULL);
+ ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0);
if (ret)
goto err;
@@ -268,7 +268,7 @@ int htc_connect_service(struct htc_target *target,
conn_msg->dl_pipeid = endpoint->dl_pipeid;
conn_msg->ul_pipeid = endpoint->ul_pipeid;
- ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0, NULL);
+ ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0);
if (ret)
goto err;
@@ -287,9 +287,9 @@ err:
}
int htc_send(struct htc_target *target, struct sk_buff *skb,
- enum htc_endpoint_id epid, struct ath9k_htc_tx_ctl *tx_ctl)
+ enum htc_endpoint_id epid)
{
- return htc_issue_send(target, skb, skb->len, 0, epid, tx_ctl);
+ return htc_issue_send(target, skb, skb->len, 0, epid);
}
void htc_stop(struct htc_target *target)
diff --git a/drivers/net/wireless/ath/ath9k/htc_hst.h
b/drivers/net/wireless/ath/ath9k/htc_hst.h
index ecd0187..3531552 100644
--- a/drivers/net/wireless/ath/ath9k/htc_hst.h
+++ b/drivers/net/wireless/ath/ath9k/htc_hst.h
@@ -35,8 +35,7 @@ struct ath9k_htc_hif {
void (*start) (void *hif_handle, u8 pipe);
void (*stop) (void *hif_handle, u8 pipe);
- int (*send) (void *hif_handle, u8 pipe, struct sk_buff *buf,
- struct ath9k_htc_tx_ctl *tx_ctl);
+ int (*send) (void *hif_handle, u8 pipe, struct sk_buff *buf);
};
enum htc_endpoint_id {
@@ -206,7 +205,7 @@ int htc_connect_service(struct htc_target *target,
struct htc_service_connreq *service_connreq,
enum htc_endpoint_id *conn_rsp_eid);
int htc_send(struct htc_target *target, struct sk_buff *skb,
- enum htc_endpoint_id eid, struct ath9k_htc_tx_ctl *tx_ctl);
+ enum htc_endpoint_id eid);
void htc_stop(struct htc_target *target);
void htc_start(struct htc_target *target);
diff --git a/drivers/net/wireless/ath/ath9k/wmi.c
b/drivers/net/wireless/ath/ath9k/wmi.c
index a5f8f6b..5cac5d0 100644
--- a/drivers/net/wireless/ath/ath9k/wmi.c
+++ b/drivers/net/wireless/ath/ath9k/wmi.c
@@ -244,7 +244,7 @@ static int ath9k_wmi_cmd_issue(struct wmi *wmi,
hdr->command_id = cpu_to_be16(cmd);
hdr->seq_no = cpu_to_be16(++wmi->tx_seq_id);
- return htc_send(wmi->htc, skb, wmi->ctrl_epid, NULL);
+ return htc_send(wmi->htc, skb, wmi->ctrl_epid);
}
int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id,
--
1.7.3.5
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