diff options
| author | Emil Tantilov <emil.s.tantilov@intel.com> | 2014-11-08 04:39:56 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-11-21 01:48:24 +0300 |
| commit | 688ff32db2f7e7074df4eb6871afa65dee41c98f (patch) | |
| tree | ef46a0b1c96d6009891f7226054875d574b7b178 /drivers/net/ethernet/intel/ixgbevf | |
| parent | 6622402a72580afee68e961e37020894dedbecb6 (diff) | |
| download | linux-688ff32db2f7e7074df4eb6871afa65dee41c98f.tar.xz | |
ixgbevf: add netpoll support
This patch adds ixgbevf_netpoll() a callback for .ndo_poll_controller to
allow for the VF interface to be used with netconsole.
CC: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 29 |
2 files changed, 24 insertions, 7 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h index 666049849d3f..bb6726cbeb86 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h @@ -379,7 +379,7 @@ struct ixgbevf_adapter { */ u32 flags; #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1) -#define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 1) + #define IXGBEVF_FLAG_QUEUE_RESET_REQUESTED (u32)(1 << 2) struct msix_entry *msix_entries; diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 70a2b8fe40ba..755f71f07ae1 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -344,10 +344,8 @@ static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector, return; } #endif /* CONFIG_NET_RX_BUSY_POLL */ - if (!(q_vector->adapter->flags & IXGBE_FLAG_IN_NETPOLL)) - napi_gro_receive(&q_vector->napi, skb); - else - netif_rx(skb); + + napi_gro_receive(&q_vector->napi, skb); } /* ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum @@ -919,12 +917,10 @@ static int ixgbevf_poll(struct napi_struct *napi, int budget) else per_ring_budget = budget; - adapter->flags |= IXGBE_FLAG_IN_NETPOLL; ixgbevf_for_each_ring(ring, q_vector->rx) clean_complete &= (ixgbevf_clean_rx_irq(q_vector, ring, per_ring_budget) < per_ring_budget); - adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; #ifdef CONFIG_NET_RX_BUSY_POLL ixgbevf_qv_unlock_napi(q_vector); @@ -3553,6 +3549,24 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu) return 0; } +#ifdef CONFIG_NET_POLL_CONTROLLER +/* Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. + */ +static void ixgbevf_netpoll(struct net_device *netdev) +{ + struct ixgbevf_adapter *adapter = netdev_priv(netdev); + int i; + + /* if interface is down do nothing */ + if (test_bit(__IXGBEVF_DOWN, &adapter->state)) + return; + for (i = 0; i < adapter->num_rx_queues; i++) + ixgbevf_msix_clean_rings(0, adapter->q_vector[i]); +} +#endif /* CONFIG_NET_POLL_CONTROLLER */ + static int ixgbevf_suspend(struct pci_dev *pdev, pm_message_t state) { struct net_device *netdev = pci_get_drvdata(pdev); @@ -3689,6 +3703,9 @@ static const struct net_device_ops ixgbevf_netdev_ops = { #ifdef CONFIG_NET_RX_BUSY_POLL .ndo_busy_poll = ixgbevf_busy_poll_recv, #endif +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = ixgbevf_netpoll, +#endif }; static void ixgbevf_assign_netdev_ops(struct net_device *dev) |