netxen: free napi resources during detach

o Defer napi resouce allocation to device attach.

o Free napi resources and delete napi during detach.

This ensures right behavior across firmware reset.

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

diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index 7acf204..5d3343e 100644 (file)
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -184,13 +184,6 @@ void netxen_free_sw_resources(struct netxen_adapter *adapter)
        kfree(recv_ctx->rds_rings);
 
 skip_rds:
-       if (recv_ctx->sds_rings == NULL)
-               goto skip_sds;
-
-       for(ring = 0; ring < adapter->max_sds_rings; ring++)
-               recv_ctx->sds_rings[ring].consumer = 0;
-
-skip_sds:
        if (adapter->tx_ring == NULL)
                return;
 

diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index d24e1cb..28f270f 100644 (file)
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -167,6 +167,8 @@ netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
 {
        if (recv_ctx->sds_rings != NULL)
                kfree(recv_ctx->sds_rings);
+
+       recv_ctx->sds_rings = NULL;
 }
 
 static int
@@ -188,6 +190,21 @@ netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
        return 0;
 }
 
+static void
+netxen_napi_del(struct netxen_adapter *adapter)
+{
+       int ring;
+       struct nx_host_sds_ring *sds_ring;
+       struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
+
+       for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+               sds_ring = &recv_ctx->sds_rings[ring];
+               netif_napi_del(&sds_ring->napi);
+       }
+
+       netxen_free_sds_rings(&adapter->recv_ctx);
+}
+
 static void
 netxen_napi_enable(struct netxen_adapter *adapter)
 {
@@ -889,10 +906,12 @@ netxen_nic_attach(struct netxen_adapter *adapter)
        struct nx_host_tx_ring *tx_ring;
 
        err = netxen_init_firmware(adapter);
-       if (err != 0) {
-               printk(KERN_ERR "Failed to init firmware\n");
-               return -EIO;
-       }
+       if (err)
+               return err;
+
+       err = netxen_napi_add(adapter, netdev);
+       if (err)
+               return err;
 
        if (adapter->fw_major < 4)
                adapter->max_rds_rings = 3;
@@ -956,6 +975,7 @@ netxen_nic_detach(struct netxen_adapter *adapter)
        netxen_free_hw_resources(adapter);
        netxen_release_rx_buffers(adapter);
        netxen_nic_free_irq(adapter);
+       netxen_napi_del(adapter);
        netxen_free_sw_resources(adapter);
 
        adapter->is_up = 0;
@@ -1100,9 +1120,6 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        netdev->irq = adapter->msix_entries[0].vector;
 
-       if (netxen_napi_add(adapter, netdev))
-               goto err_out_disable_msi;
-
        init_timer(&adapter->watchdog_timer);
        adapter->watchdog_timer.function = &netxen_watchdog;
        adapter->watchdog_timer.data = (unsigned long)adapter;
@@ -1183,7 +1200,6 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
                netxen_free_adapter_offload(adapter);
 
        netxen_teardown_intr(adapter);
-       netxen_free_sds_rings(&adapter->recv_ctx);
 
        netxen_cleanup_pci_map(adapter);