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https://github.com/kanjitalk755/macemu.git
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Use atomic operation
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@ -158,7 +158,7 @@ struct SheepVars {
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char eth_addr[6]; /* Hardware address of the Ethernet card */
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char eth_addr[6]; /* Hardware address of the Ethernet card */
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char fake_addr[6]; /* Local faked hardware address (what SheepShaver sees) */
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char fake_addr[6]; /* Local faked hardware address (what SheepShaver sees) */
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#ifdef LINUX_3_15
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#ifdef LINUX_3_15
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int got_packet;
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atomic_t got_packet;
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#endif
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#endif
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};
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};
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@ -396,14 +396,10 @@ static ssize_t sheep_net_read(struct file *f, char *buf, size_t count, loff_t *o
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if (skb != NULL || (f->f_flags & O_NONBLOCK))
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if (skb != NULL || (f->f_flags & O_NONBLOCK))
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break;
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break;
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/*packet is not available*/
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#ifdef LINUX_3_15
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v->got_packet = 0;
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#endif
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/* No packet in queue and in blocking mode, so block */
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/* No packet in queue and in blocking mode, so block */
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#ifdef LINUX_3_15
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#ifdef LINUX_3_15
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wait_event_interruptible(v->wait, v->got_packet == 1);
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atomic_set(&v->got_packet, 0);
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wait_event_interruptible(v->wait, atomic_read(&v->got_packet));
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#else
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#else
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interruptible_sleep_on(&v->wait);
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interruptible_sleep_on(&v->wait);
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#endif
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#endif
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@ -746,12 +742,18 @@ static int sheep_net_receiver(struct sk_buff *skb, struct net_device *dev, struc
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/* Enqueue packet */
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/* Enqueue packet */
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skb_queue_tail(&v->queue, skb);
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skb_queue_tail(&v->queue, skb);
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/* Unblock blocked read */
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#ifdef LINUX_3_15
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#ifdef LINUX_3_15
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v->got_packet = 1;
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#endif
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/* Unblock blocked read */
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atomic_set(&v->got_packet, 1);
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wake_up(&v->wait);
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wake_up_interruptible(&v->wait);
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#else
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wake_up(&v->wait);
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#endif
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return 0;
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return 0;
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drop:
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drop:
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