diff options
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_ethtool.c | 101 |
1 files changed, 58 insertions, 43 deletions
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c index 55970ec72de..aafc120f164 100644 --- a/drivers/net/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ixgbe/ixgbe_ethtool.c @@ -734,9 +734,10 @@ static int ixgbe_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring) { struct ixgbe_adapter *adapter = netdev_priv(netdev); - struct ixgbe_ring *temp_ring; + struct ixgbe_ring *temp_tx_ring, *temp_rx_ring; int i, err; u32 new_rx_count, new_tx_count; + bool need_update = false; if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) return -EINVAL; @@ -755,80 +756,94 @@ static int ixgbe_set_ringparam(struct net_device *netdev, return 0; } - temp_ring = kcalloc(adapter->num_tx_queues, - sizeof(struct ixgbe_ring), GFP_KERNEL); - if (!temp_ring) - return -ENOMEM; - while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) msleep(1); - if (new_tx_count != adapter->tx_ring->count) { + temp_tx_ring = kcalloc(adapter->num_tx_queues, + sizeof(struct ixgbe_ring), GFP_KERNEL); + if (!temp_tx_ring) { + err = -ENOMEM; + goto err_setup; + } + + if (new_tx_count != adapter->tx_ring_count) { + memcpy(temp_tx_ring, adapter->tx_ring, + adapter->num_tx_queues * sizeof(struct ixgbe_ring)); for (i = 0; i < adapter->num_tx_queues; i++) { - temp_ring[i].count = new_tx_count; - err = ixgbe_setup_tx_resources(adapter, &temp_ring[i]); + temp_tx_ring[i].count = new_tx_count; + err = ixgbe_setup_tx_resources(adapter, + &temp_tx_ring[i]); if (err) { while (i) { i--; ixgbe_free_tx_resources(adapter, - &temp_ring[i]); + &temp_tx_ring[i]); } goto err_setup; } - temp_ring[i].v_idx = adapter->tx_ring[i].v_idx; + temp_tx_ring[i].v_idx = adapter->tx_ring[i].v_idx; } - if (netif_running(netdev)) - netdev->netdev_ops->ndo_stop(netdev); - ixgbe_reset_interrupt_capability(adapter); - ixgbe_napi_del_all(adapter); - INIT_LIST_HEAD(&netdev->napi_list); - kfree(adapter->tx_ring); - adapter->tx_ring = temp_ring; - temp_ring = NULL; - adapter->tx_ring_count = new_tx_count; + need_update = true; } - temp_ring = kcalloc(adapter->num_rx_queues, - sizeof(struct ixgbe_ring), GFP_KERNEL); - if (!temp_ring) { - if (netif_running(netdev)) - netdev->netdev_ops->ndo_open(netdev); - return -ENOMEM; + temp_rx_ring = kcalloc(adapter->num_rx_queues, + sizeof(struct ixgbe_ring), GFP_KERNEL); + if ((!temp_rx_ring) && (need_update)) { + for (i = 0; i < adapter->num_tx_queues; i++) + ixgbe_free_tx_resources(adapter, &temp_tx_ring[i]); + kfree(temp_tx_ring); + err = -ENOMEM; + goto err_setup; } - if (new_rx_count != adapter->rx_ring->count) { + if (new_rx_count != adapter->rx_ring_count) { + memcpy(temp_rx_ring, adapter->rx_ring, + adapter->num_rx_queues * sizeof(struct ixgbe_ring)); for (i = 0; i < adapter->num_rx_queues; i++) { - temp_ring[i].count = new_rx_count; - err = ixgbe_setup_rx_resources(adapter, &temp_ring[i]); + temp_rx_ring[i].count = new_rx_count; + err = ixgbe_setup_rx_resources(adapter, + &temp_rx_ring[i]); if (err) { while (i) { i--; ixgbe_free_rx_resources(adapter, - &temp_ring[i]); + &temp_rx_ring[i]); } goto err_setup; } - temp_ring[i].v_idx = adapter->rx_ring[i].v_idx; + temp_rx_ring[i].v_idx = adapter->rx_ring[i].v_idx; } + need_update = true; + } + + /* if rings need to be updated, here's the place to do it in one shot */ + if (need_update) { if (netif_running(netdev)) - netdev->netdev_ops->ndo_stop(netdev); - ixgbe_reset_interrupt_capability(adapter); - ixgbe_napi_del_all(adapter); - INIT_LIST_HEAD(&netdev->napi_list); - kfree(adapter->rx_ring); - adapter->rx_ring = temp_ring; - temp_ring = NULL; - - adapter->rx_ring_count = new_rx_count; + ixgbe_down(adapter); + + /* tx */ + if (new_tx_count != adapter->tx_ring_count) { + kfree(adapter->tx_ring); + adapter->tx_ring = temp_tx_ring; + temp_tx_ring = NULL; + adapter->tx_ring_count = new_tx_count; + } + + /* rx */ + if (new_rx_count != adapter->rx_ring_count) { + kfree(adapter->rx_ring); + adapter->rx_ring = temp_rx_ring; + temp_rx_ring = NULL; + adapter->rx_ring_count = new_rx_count; + } } /* success! */ err = 0; -err_setup: - ixgbe_init_interrupt_scheme(adapter); if (netif_running(netdev)) - netdev->netdev_ops->ndo_open(netdev); + ixgbe_up(adapter); +err_setup: clear_bit(__IXGBE_RESETTING, &adapter->state); return err; } |