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a1854fae14
Curretly, RX packet processing is done sequencially. To improve the efficiency, RX skb queue is introduced. Here, while preparing RX URB skb is allocated and used for RX buffer. When rx done handler is called, enqueue the skb to rx_q and set the thread event. RX thread is modified to dequeue packets from skb queue and process further. Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/**
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* Copyright (c) 2014 Redpine Signals Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include <linux/firmware.h>
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#include "rsi_usb.h"
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/**
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* rsi_usb_rx_thread() - This is a kernel thread to receive the packets from
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* the USB device.
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* @common: Pointer to the driver private structure.
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*
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* Return: None.
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*/
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void rsi_usb_rx_thread(struct rsi_common *common)
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{
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struct rsi_hw *adapter = common->priv;
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struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
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int status;
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struct sk_buff *skb;
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do {
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rsi_wait_event(&dev->rx_thread.event, EVENT_WAIT_FOREVER);
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rsi_reset_event(&dev->rx_thread.event);
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while (true) {
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if (atomic_read(&dev->rx_thread.thread_done))
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goto out;
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skb = skb_dequeue(&dev->rx_q);
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if (!skb)
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break;
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status = rsi_read_pkt(common, skb->data, 0);
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if (status) {
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rsi_dbg(ERR_ZONE, "%s: Failed To read data",
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__func__);
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break;
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}
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dev_kfree_skb(skb);
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}
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} while (1);
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out:
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rsi_dbg(INFO_ZONE, "%s: Terminated thread\n", __func__);
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skb_queue_purge(&dev->rx_q);
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complete_and_exit(&dev->rx_thread.completion, 0);
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}
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