diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/efx.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/efx.c | 70 |
1 files changed, 55 insertions, 15 deletions
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index c9c306aef2d9..ac571cf14485 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -1175,25 +1175,40 @@ static unsigned int efx_wanted_parallelism(struct efx_nic *efx) unsigned int count; int cpu; - if (rss_cpus) - return rss_cpus; + if (rss_cpus) { + count = rss_cpus; + } else { + if (unlikely(!zalloc_cpumask_var(&thread_mask, GFP_KERNEL))) { + netif_warn(efx, probe, efx->net_dev, + "RSS disabled due to allocation failure\n"); + return 1; + } - if (unlikely(!zalloc_cpumask_var(&thread_mask, GFP_KERNEL))) { - netif_warn(efx, probe, efx->net_dev, - "RSS disabled due to allocation failure\n"); - return 1; + count = 0; + for_each_online_cpu(cpu) { + if (!cpumask_test_cpu(cpu, thread_mask)) { + ++count; + cpumask_or(thread_mask, thread_mask, + topology_thread_cpumask(cpu)); + } + } + + free_cpumask_var(thread_mask); } - count = 0; - for_each_online_cpu(cpu) { - if (!cpumask_test_cpu(cpu, thread_mask)) { - ++count; - cpumask_or(thread_mask, thread_mask, - topology_thread_cpumask(cpu)); - } + /* If RSS is requested for the PF *and* VFs then we can't write RSS + * table entries that are inaccessible to VFs + */ + if (efx_sriov_wanted(efx) && efx_vf_size(efx) > 1 && + count > efx_vf_size(efx)) { + netif_warn(efx, probe, efx->net_dev, + "Reducing number of RSS channels from %u to %u for " + "VF support. Increase vf-msix-limit to use more " + "channels on the PF.\n", + count, efx_vf_size(efx)); + count = efx_vf_size(efx); } - free_cpumask_var(thread_mask); return count; } @@ -1327,6 +1342,10 @@ static int efx_probe_interrupts(struct efx_nic *efx) } } + /* RSS might be usable on VFs even if it is disabled on the PF */ + efx->rss_spread = (efx->n_rx_channels > 1 ? + efx->n_rx_channels : efx_vf_size(efx)); + return 0; } @@ -1426,7 +1445,7 @@ static int efx_probe_nic(struct efx_nic *efx) get_random_bytes(&efx->rx_hash_key, sizeof(efx->rx_hash_key)); for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++) efx->rx_indir_table[i] = - ethtool_rxfh_indir_default(i, efx->n_rx_channels); + ethtool_rxfh_indir_default(i, efx->rss_spread); efx_set_channels(efx); netif_set_real_num_tx_queues(efx->net_dev, efx->n_tx_channels); @@ -1915,6 +1934,7 @@ static int efx_set_mac_address(struct net_device *net_dev, void *data) } memcpy(net_dev->dev_addr, new_addr, net_dev->addr_len); + efx_sriov_mac_address_changed(efx); /* Reconfigure the MAC */ mutex_lock(&efx->mac_lock); @@ -1981,6 +2001,12 @@ static const struct net_device_ops efx_netdev_ops = { .ndo_set_mac_address = efx_set_mac_address, .ndo_set_rx_mode = efx_set_rx_mode, .ndo_set_features = efx_set_features, +#ifdef CONFIG_SFC_SRIOV + .ndo_set_vf_mac = efx_sriov_set_vf_mac, + .ndo_set_vf_vlan = efx_sriov_set_vf_vlan, + .ndo_set_vf_spoofchk = efx_sriov_set_vf_spoofchk, + .ndo_get_vf_config = efx_sriov_get_vf_config, +#endif #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = efx_netpoll, #endif @@ -2150,6 +2176,7 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok) efx_start_interrupts(efx, false); efx_restore_filters(efx); + efx_sriov_reset(efx); mutex_unlock(&efx->mac_lock); @@ -2440,6 +2467,7 @@ static void efx_pci_remove(struct pci_dev *pci_dev) rtnl_unlock(); efx_stop_interrupts(efx, false); + efx_sriov_fini(efx); efx_unregister_netdev(efx); efx_mtd_remove(efx); @@ -2581,6 +2609,11 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev, if (rc) goto fail4; + rc = efx_sriov_init(efx); + if (rc) + netif_err(efx, probe, efx->net_dev, + "SR-IOV can't be enabled rc %d\n", rc); + netif_dbg(efx, probe, efx->net_dev, "initialisation successful\n"); /* Try to create MTDs, but allow this to fail */ @@ -2732,6 +2765,10 @@ static int __init efx_init_module(void) if (rc) goto err_notifier; + rc = efx_init_sriov(); + if (rc) + goto err_sriov; + reset_workqueue = create_singlethread_workqueue("sfc_reset"); if (!reset_workqueue) { rc = -ENOMEM; @@ -2747,6 +2784,8 @@ static int __init efx_init_module(void) err_pci: destroy_workqueue(reset_workqueue); err_reset: + efx_fini_sriov(); + err_sriov: unregister_netdevice_notifier(&efx_netdev_notifier); err_notifier: return rc; @@ -2758,6 +2797,7 @@ static void __exit efx_exit_module(void) pci_unregister_driver(&efx_pci_driver); destroy_workqueue(reset_workqueue); + efx_fini_sriov(); unregister_netdevice_notifier(&efx_netdev_notifier); } |