diff options
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/usb.c | 61 |
1 files changed, 36 insertions, 25 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c index 7fe68aa69dfd..8aab2a22d6a1 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c @@ -119,9 +119,8 @@ struct brcmf_usbdev_info { int rx_low_watermark; int tx_low_watermark; int tx_high_watermark; - bool txoff; - bool rxoff; - bool txoverride; + int tx_freecount; + bool tx_flowblock; struct brcmf_usbreq *tx_reqs; struct brcmf_usbreq *rx_reqs; @@ -179,14 +178,6 @@ static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) return brcmf_usb_get_buspub(dev)->devinfo; } -#if 0 -static void -brcmf_usb_txflowcontrol(struct brcmf_usbdev_info *devinfo, bool onoff) -{ - dhd_txflowcontrol(devinfo->bus_pub.netdev, 0, onoff); -} -#endif - static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo, uint *condition, bool *pending) { @@ -420,7 +411,7 @@ static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) } static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, - struct list_head *q) + struct list_head *q, int *counter) { unsigned long flags; struct brcmf_usbreq *req; @@ -431,17 +422,22 @@ static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, } req = list_entry(q->next, struct brcmf_usbreq, list); list_del_init(q->next); + if (counter) + (*counter)--; spin_unlock_irqrestore(&devinfo->qlock, flags); return req; } static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, - struct list_head *q, struct brcmf_usbreq *req) + struct list_head *q, struct brcmf_usbreq *req, + int *counter) { unsigned long flags; spin_lock_irqsave(&devinfo->qlock, flags); list_add_tail(&req->list, q); + if (counter) + (*counter)++; spin_unlock_irqrestore(&devinfo->qlock, flags); } @@ -523,8 +519,12 @@ static void brcmf_usb_tx_complete(struct urb *urb) brcmu_pkt_buf_free_skb(req->skb); req->skb = NULL; - brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req); - + brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); + if (devinfo->tx_freecount > devinfo->tx_high_watermark && + devinfo->tx_flowblock) { + brcmf_txflowblock(devinfo->dev, false); + devinfo->tx_flowblock = false; + } } static void brcmf_usb_rx_complete(struct urb *urb) @@ -543,7 +543,7 @@ static void brcmf_usb_rx_complete(struct urb *urb) } else { devinfo->bus_pub.bus->dstats.rx_errors++; brcmu_pkt_buf_free_skb(skb); - brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); return; } @@ -552,7 +552,7 @@ static void brcmf_usb_rx_complete(struct urb *urb) if (brcmf_proto_hdrpull(devinfo->dev, &ifidx, skb) != 0) { brcmf_dbg(ERROR, "rx protocol error\n"); brcmu_pkt_buf_free_skb(skb); - brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); devinfo->bus_pub.bus->dstats.rx_errors++; } else { brcmf_rx_packet(devinfo->dev, ifidx, skb); @@ -560,7 +560,7 @@ static void brcmf_usb_rx_complete(struct urb *urb) } } else { brcmu_pkt_buf_free_skb(skb); - brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); } return; @@ -577,7 +577,7 @@ static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); if (!skb) { - brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); return; } req->skb = skb; @@ -586,14 +586,14 @@ static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, req); req->devinfo = devinfo; - brcmf_usb_enq(devinfo, &devinfo->rx_postq, req); + brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); ret = usb_submit_urb(req->urb, GFP_ATOMIC); if (ret) { brcmf_usb_del_fromq(devinfo, req); brcmu_pkt_buf_free_skb(req->skb); req->skb = NULL; - brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); } return; } @@ -606,7 +606,7 @@ static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) brcmf_dbg(ERROR, "bus is not up\n"); return; } - while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq)) != NULL) + while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) brcmf_usb_rx_refill(devinfo, req); } @@ -684,7 +684,8 @@ static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) return -EIO; } - req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq); + req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, + &devinfo->tx_freecount); if (!req) { brcmu_pkt_buf_free_skb(skb); brcmf_dbg(ERROR, "no req to send\n"); @@ -696,14 +697,21 @@ static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, skb->data, skb->len, brcmf_usb_tx_complete, req); req->urb->transfer_flags |= URB_ZERO_PACKET; - brcmf_usb_enq(devinfo, &devinfo->tx_postq, req); + brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); ret = usb_submit_urb(req->urb, GFP_ATOMIC); if (ret) { brcmf_dbg(ERROR, "brcmf_usb_tx usb_submit_urb FAILED\n"); brcmf_usb_del_fromq(devinfo, req); brcmu_pkt_buf_free_skb(req->skb); req->skb = NULL; - brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req); + brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, + &devinfo->tx_freecount); + } else { + if (devinfo->tx_freecount < devinfo->tx_low_watermark && + !devinfo->tx_flowblock) { + brcmf_txflowblock(dev, true); + devinfo->tx_flowblock = true; + } } return ret; @@ -1316,6 +1324,8 @@ struct brcmf_usbdev *brcmf_usb_attach(int nrxq, int ntxq, struct device *dev) INIT_LIST_HEAD(&devinfo->tx_freeq); INIT_LIST_HEAD(&devinfo->tx_postq); + devinfo->tx_flowblock = false; + devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); if (!devinfo->rx_reqs) goto error; @@ -1323,6 +1333,7 @@ struct brcmf_usbdev *brcmf_usb_attach(int nrxq, int ntxq, struct device *dev) devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); if (!devinfo->tx_reqs) goto error; + devinfo->tx_freecount = ntxq; devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC); if (!devinfo->intr_urb) { |