Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / drivers / firewire / net.c

diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 1a467a9..c2e194c 100644 (file)
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -9,6 +9,7 @@
 #include <linux/bug.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/ethtool.h>
 #include <linux/firewire.h>
 #include <linux/firewire-constants.h>
 #include <linux/highmem.h>
@@ -179,6 +180,7 @@ struct fwnet_device {
        /* Number of tx datagrams that have been queued but not yet acked */
        int queued_datagrams;
 
+       int peer_count;
        struct list_head peer_list;
        struct fw_card *card;
        struct net_device *netdev;
@@ -996,15 +998,23 @@ static void fwnet_transmit_packet_failed(struct fwnet_packet_task *ptask)
 static void fwnet_write_complete(struct fw_card *card, int rcode,
                                 void *payload, size_t length, void *data)
 {
-       struct fwnet_packet_task *ptask;
-
-       ptask = data;
+       struct fwnet_packet_task *ptask = data;
+       static unsigned long j;
+       static int last_rcode, errors_skipped;
 
        if (rcode == RCODE_COMPLETE) {
                fwnet_transmit_packet_done(ptask);
        } else {
-               fw_error("fwnet_write_complete: failed: %x\n", rcode);
                fwnet_transmit_packet_failed(ptask);
+
+               if (printk_timed_ratelimit(&j,  1000) || rcode != last_rcode) {
+                       fw_error("fwnet_write_complete: "
+                               "failed: %x (skipped %d)\n", rcode, errors_skipped);
+
+                       errors_skipped = 0;
+                       last_rcode = rcode;
+               } else
+                       errors_skipped++;
        }
 }
 
@@ -1213,6 +1223,14 @@ static int fwnet_broadcast_start(struct fwnet_device *dev)
        return retval;
 }
 
+static void set_carrier_state(struct fwnet_device *dev)
+{
+       if (dev->peer_count > 1)
+               netif_carrier_on(dev->netdev);
+       else
+               netif_carrier_off(dev->netdev);
+}
+
 /* ifup */
 static int fwnet_open(struct net_device *net)
 {
@@ -1226,6 +1244,10 @@ static int fwnet_open(struct net_device *net)
        }
        netif_start_queue(net);
 
+       spin_lock_irq(&dev->lock);
+       set_carrier_state(dev);
+       spin_unlock_irq(&dev->lock);
+
        return 0;
 }
 
@@ -1397,6 +1419,10 @@ static int fwnet_change_mtu(struct net_device *net, int new_mtu)
        return 0;
 }
 
+static const struct ethtool_ops fwnet_ethtool_ops = {
+       .get_link       = ethtool_op_get_link,
+};
+
 static const struct net_device_ops fwnet_netdev_ops = {
        .ndo_open       = fwnet_open,
        .ndo_stop       = fwnet_stop,
@@ -1415,6 +1441,7 @@ static void fwnet_init_dev(struct net_device *net)
        net->hard_header_len    = FWNET_HLEN;
        net->type               = ARPHRD_IEEE1394;
        net->tx_queue_len       = FWNET_TX_QUEUE_LEN;
+       net->ethtool_ops        = &fwnet_ethtool_ops;
 }
 
 /* caller must hold fwnet_device_mutex */
@@ -1455,6 +1482,8 @@ static int fwnet_add_peer(struct fwnet_device *dev,
 
        spin_lock_irq(&dev->lock);
        list_add_tail(&peer->peer_link, &dev->peer_list);
+       dev->peer_count++;
+       set_carrier_state(dev);
        spin_unlock_irq(&dev->lock);
 
        return 0;
@@ -1535,13 +1564,15 @@ static int fwnet_probe(struct device *_dev)
        return ret;
 }
 
-static void fwnet_remove_peer(struct fwnet_peer *peer)
+static void fwnet_remove_peer(struct fwnet_peer *peer, struct fwnet_device *dev)
 {
        struct fwnet_partial_datagram *pd, *pd_next;
 
-       spin_lock_irq(&peer->dev->lock);
+       spin_lock_irq(&dev->lock);
        list_del(&peer->peer_link);
-       spin_unlock_irq(&peer->dev->lock);
+       dev->peer_count--;
+       set_carrier_state(dev);
+       spin_unlock_irq(&dev->lock);
 
        list_for_each_entry_safe(pd, pd_next, &peer->pd_list, pd_link)
                fwnet_pd_delete(pd);
@@ -1558,7 +1589,7 @@ static int fwnet_remove(struct device *_dev)
 
        mutex_lock(&fwnet_device_mutex);
 
-       fwnet_remove_peer(peer);
+       fwnet_remove_peer(peer, dev);
 
        if (list_empty(&dev->peer_list)) {
                net = dev->netdev;