netxen: support for ethtool set ringparam

Add support for ethtool -G to tune rx and tx ring sizes
per interface basis.

This is only supported for NX3031 based cards.

Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 35 insertions, 10 deletions

diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index ff7ee9c43ef5..2bbefa6a37bc 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -910,6 +910,9 @@ netxen_nic_attach(struct netxen_adapter *adapter)
         struct nx_host_rds_ring *rds_ring;
         struct nx_host_tx_ring *tx_ring;
 
+        if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
+                return 0;
+
         err = netxen_init_firmware(adapter);
         if (err != 0) {
                 printk(KERN_ERR "Failed to init firmware\n");
@@ -973,6 +976,9 @@ err_out_free_sw:
 static void
 netxen_nic_detach(struct netxen_adapter *adapter)
 {
+        if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
+                return;
+
         netxen_free_hw_resources(adapter);
         netxen_release_rx_buffers(adapter);
         netxen_nic_free_irq(adapter);
@@ -981,6 +987,30 @@ netxen_nic_detach(struct netxen_adapter *adapter)
         adapter->is_up = 0;
 }
 
+int
+netxen_nic_reset_context(struct netxen_adapter *adapter)
+{
+        int err = 0;
+        struct net_device *netdev = adapter->netdev;
+
+        if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
+
+                if (netif_running(netdev))
+                        netxen_nic_down(adapter, netdev);
+
+                netxen_nic_detach(adapter);
+
+                err = netxen_nic_attach(adapter);
+                if (err)
+                        goto done;
+
+                if (netif_running(netdev))
+                        err = netxen_nic_up(adapter, netdev);
+        }
+done:
+        return err;
+}
+
 static int
 netxen_setup_netdev(struct netxen_adapter *adapter,
                 struct net_device *netdev)
@@ -1202,9 +1232,7 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
 
         unregister_netdev(netdev);
 
-        if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
-                netxen_nic_detach(adapter);
-        }
+        netxen_nic_detach(adapter);
 
         if (adapter->portnum == 0)
                 netxen_free_dummy_dma(adapter);
@@ -1236,8 +1264,7 @@ netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
         if (netif_running(netdev))
                 netxen_nic_down(adapter, netdev);
 
-        if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
-                netxen_nic_detach(adapter);
+        netxen_nic_detach(adapter);
 
         pci_save_state(pdev);
 
@@ -1298,11 +1325,9 @@ static int netxen_nic_open(struct net_device *netdev)
         if (adapter->driver_mismatch)
                 return -EIO;
 
-        if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
-                err = netxen_nic_attach(adapter);
-                if (err)
-                        return err;
-        }
+        err = netxen_nic_attach(adapter);
+        if (err)
+                return err;
 
         err = netxen_nic_up(adapter, netdev);
         if (err)