diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_tx.c')
-rw-r--r-- | drivers/net/wireless/wl12xx/wl1271_tx.c | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c index 62db79508ddf..dc0b46c93c4b 100644 --- a/drivers/net/wireless/wl12xx/wl1271_tx.c +++ b/drivers/net/wireless/wl12xx/wl1271_tx.c @@ -36,6 +36,7 @@ static int wl1271_tx_id(struct wl1271 *wl, struct sk_buff *skb) for (i = 0; i < ACX_TX_DESCRIPTORS; i++) if (wl->tx_frames[i] == NULL) { wl->tx_frames[i] = skb; + wl->tx_frames_cnt++; return i; } @@ -73,8 +74,10 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra) wl1271_debug(DEBUG_TX, "tx_allocate: size: %d, blocks: %d, id: %d", total_len, total_blocks, id); - } else + } else { wl->tx_frames[id] = NULL; + wl->tx_frames_cnt--; + } return ret; } @@ -190,7 +193,7 @@ static int wl1271_tx_frame(struct wl1271 *wl, struct sk_buff *skb) info = IEEE80211_SKB_CB(skb); if (info->control.hw_key && - info->control.hw_key->alg == ALG_TKIP) + info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) extra = WL1271_TKIP_IV_SPACE; if (info->control.hw_key) { @@ -344,7 +347,7 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl, /* remove TKIP header space if present */ if (info->control.hw_key && - info->control.hw_key->alg == ALG_TKIP) { + info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) { int hdrlen = ieee80211_get_hdrlen_from_skb(skb); memmove(skb->data + WL1271_TKIP_IV_SPACE, skb->data, hdrlen); skb_pull(skb, WL1271_TKIP_IV_SPACE); @@ -358,6 +361,7 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl, /* return the packet to the stack */ ieee80211_tx_status(wl->hw, skb); wl->tx_frames[result->id] = NULL; + wl->tx_frames_cnt--; } /* Called upon reception of a TX complete interrupt */ @@ -412,7 +416,7 @@ void wl1271_tx_complete(struct wl1271 *wl) } /* caller must hold wl->mutex */ -void wl1271_tx_flush(struct wl1271 *wl) +void wl1271_tx_reset(struct wl1271 *wl) { int i; struct sk_buff *skb; @@ -421,7 +425,7 @@ void wl1271_tx_flush(struct wl1271 *wl) /* control->flags = 0; FIXME */ while ((skb = skb_dequeue(&wl->tx_queue))) { - wl1271_debug(DEBUG_TX, "flushing skb 0x%p", skb); + wl1271_debug(DEBUG_TX, "freeing skb 0x%p", skb); ieee80211_tx_status(wl->hw, skb); } @@ -429,6 +433,32 @@ void wl1271_tx_flush(struct wl1271 *wl) if (wl->tx_frames[i] != NULL) { skb = wl->tx_frames[i]; wl->tx_frames[i] = NULL; + wl1271_debug(DEBUG_TX, "freeing skb 0x%p", skb); ieee80211_tx_status(wl->hw, skb); } + wl->tx_frames_cnt = 0; +} + +#define WL1271_TX_FLUSH_TIMEOUT 500000 + +/* caller must *NOT* hold wl->mutex */ +void wl1271_tx_flush(struct wl1271 *wl) +{ + unsigned long timeout; + timeout = jiffies + usecs_to_jiffies(WL1271_TX_FLUSH_TIMEOUT); + + while (!time_after(jiffies, timeout)) { + mutex_lock(&wl->mutex); + wl1271_debug(DEBUG_TX, "flushing tx buffer: %d", + wl->tx_frames_cnt); + if ((wl->tx_frames_cnt == 0) && + skb_queue_empty(&wl->tx_queue)) { + mutex_unlock(&wl->mutex); + return; + } + mutex_unlock(&wl->mutex); + msleep(1); + } + + wl1271_warning("Unable to flush all TX buffers, timed out."); } |