diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 159 |
1 files changed, 155 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index de1ad506665d..33444b5b5105 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -99,6 +99,7 @@ MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); /* forward decls */ static void ixgbevf_set_itr(struct ixgbevf_q_vector *q_vector); +static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter); static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw, struct ixgbevf_ring *rx_ring, @@ -1335,7 +1336,8 @@ static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter) static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; - int api[] = { ixgbe_mbox_api_10, + int api[] = { ixgbe_mbox_api_11, + ixgbe_mbox_api_10, ixgbe_mbox_api_unknown }; int err = 0, idx = 0; @@ -1413,12 +1415,87 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter) mod_timer(&adapter->watchdog_timer, jiffies); } +static int ixgbevf_reset_queues(struct ixgbevf_adapter *adapter) +{ + struct ixgbe_hw *hw = &adapter->hw; + struct ixgbevf_ring *rx_ring; + unsigned int def_q = 0; + unsigned int num_tcs = 0; + unsigned int num_rx_queues = 1; + int err, i; + + spin_lock(&adapter->mbx_lock); + + /* fetch queue configuration from the PF */ + err = ixgbevf_get_queues(hw, &num_tcs, &def_q); + + spin_unlock(&adapter->mbx_lock); + + if (err) + return err; + + if (num_tcs > 1) { + /* update default Tx ring register index */ + adapter->tx_ring[0].reg_idx = def_q; + + /* we need as many queues as traffic classes */ + num_rx_queues = num_tcs; + } + + /* nothing to do if we have the correct number of queues */ + if (adapter->num_rx_queues == num_rx_queues) + return 0; + + /* allocate new rings */ + rx_ring = kcalloc(num_rx_queues, + sizeof(struct ixgbevf_ring), GFP_KERNEL); + if (!rx_ring) + return -ENOMEM; + + /* setup ring fields */ + for (i = 0; i < num_rx_queues; i++) { + rx_ring[i].count = adapter->rx_ring_count; + rx_ring[i].queue_index = i; + rx_ring[i].reg_idx = i; + rx_ring[i].dev = &adapter->pdev->dev; + rx_ring[i].netdev = adapter->netdev; + + /* allocate resources on the ring */ + err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]); + if (err) { + while (i) { + i--; + ixgbevf_free_rx_resources(adapter, &rx_ring[i]); + } + kfree(rx_ring); + return err; + } + } + + /* free the existing rings and queues */ + ixgbevf_free_all_rx_resources(adapter); + adapter->num_rx_queues = 0; + kfree(adapter->rx_ring); + + /* move new rings into position on the adapter struct */ + adapter->rx_ring = rx_ring; + adapter->num_rx_queues = num_rx_queues; + + /* reset ring to vector mapping */ + ixgbevf_reset_q_vectors(adapter); + ixgbevf_map_rings_to_vectors(adapter); + + return 0; +} + void ixgbevf_up(struct ixgbevf_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; ixgbevf_negotiate_api(adapter); + ixgbevf_reset_queues(adapter); + ixgbevf_configure(adapter); ixgbevf_up_complete(adapter); @@ -1717,6 +1794,7 @@ static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter) for (i = 0; i < adapter->num_tx_queues; i++) { adapter->tx_ring[i].count = adapter->tx_ring_count; adapter->tx_ring[i].queue_index = i; + /* reg_idx may be remapped later by DCB config */ adapter->tx_ring[i].reg_idx = i; adapter->tx_ring[i].dev = &adapter->pdev->dev; adapter->tx_ring[i].netdev = adapter->netdev; @@ -1950,8 +2028,11 @@ static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter) hw->subsystem_device_id = pdev->subsystem_device; hw->mbx.ops.init_params(hw); - hw->mac.max_tx_queues = MAX_TX_QUEUES; - hw->mac.max_rx_queues = MAX_RX_QUEUES; + + /* assume legacy case in which PF would only give VF 2 queues */ + hw->mac.max_tx_queues = 2; + hw->mac.max_rx_queues = 2; + err = hw->mac.ops.reset_hw(hw); if (err) { dev_info(&pdev->dev, @@ -2377,6 +2458,63 @@ static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter) &adapter->rx_ring[i]); } +static int ixgbevf_setup_queues(struct ixgbevf_adapter *adapter) +{ + struct ixgbe_hw *hw = &adapter->hw; + struct ixgbevf_ring *rx_ring; + unsigned int def_q = 0; + unsigned int num_tcs = 0; + unsigned int num_rx_queues = 1; + int err, i; + + spin_lock(&adapter->mbx_lock); + + /* fetch queue configuration from the PF */ + err = ixgbevf_get_queues(hw, &num_tcs, &def_q); + + spin_unlock(&adapter->mbx_lock); + + if (err) + return err; + + if (num_tcs > 1) { + /* update default Tx ring register index */ + adapter->tx_ring[0].reg_idx = def_q; + + /* we need as many queues as traffic classes */ + num_rx_queues = num_tcs; + } + + /* nothing to do if we have the correct number of queues */ + if (adapter->num_rx_queues == num_rx_queues) + return 0; + + /* allocate new rings */ + rx_ring = kcalloc(num_rx_queues, + sizeof(struct ixgbevf_ring), GFP_KERNEL); + if (!rx_ring) + return -ENOMEM; + + /* setup ring fields */ + for (i = 0; i < num_rx_queues; i++) { + rx_ring[i].count = adapter->rx_ring_count; + rx_ring[i].queue_index = i; + rx_ring[i].reg_idx = i; + rx_ring[i].dev = &adapter->pdev->dev; + rx_ring[i].netdev = adapter->netdev; + } + + /* free the existing ring and queues */ + adapter->num_rx_queues = 0; + kfree(adapter->rx_ring); + + /* move new rings into position on the adapter struct */ + adapter->rx_ring = rx_ring; + adapter->num_rx_queues = num_rx_queues; + + return 0; +} + /** * ixgbevf_open - Called when a network interface is made active * @netdev: network interface device structure @@ -2413,6 +2551,11 @@ static int ixgbevf_open(struct net_device *netdev) ixgbevf_negotiate_api(adapter); + /* setup queue reg_idx and Rx queue count */ + err = ixgbevf_setup_queues(adapter); + if (err) + goto err_setup_queues; + /* allocate transmit descriptors */ err = ixgbevf_setup_all_tx_resources(adapter); if (err) @@ -2451,6 +2594,7 @@ err_setup_rx: ixgbevf_free_all_rx_resources(adapter); err_setup_tx: ixgbevf_free_all_tx_resources(adapter); +err_setup_queues: ixgbevf_reset(adapter); err_setup_reset: @@ -2925,8 +3069,15 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu) int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; int max_possible_frame = MAXIMUM_ETHERNET_VLAN_SIZE; - if (adapter->hw.mac.type == ixgbe_mac_X540_vf) + switch (adapter->hw.api_version) { + case ixgbe_mbox_api_11: max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE; + break; + default: + if (adapter->hw.mac.type == ixgbe_mac_X540_vf) + max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE; + break; + } /* MTU < 68 is an error and causes problems on some kernels */ if ((new_mtu < 68) || (max_frame > max_possible_frame)) |