qlcnic: Enhance logic to calculate msix vectors.
o Refactored MSI-x vector calculation for All adapters. Decoupled logic in the code which was using same call to request MSI-x vectors in default driver load, as well as during set_channel() operation for TSS/RSS. This refactoring simplifies code for TSS/RSS code path as well as probe path of the driver load for all adapters. Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Himanshu Madhani
David S. Miller
parent
a514722afe
commit
cb9327d567
4 changed files with 196 additions and 101 deletions
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@ -105,6 +105,8 @@
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#define QLCNIC_DEF_TX_RINGS 4
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#define QLCNIC_MAX_VNIC_TX_RINGS 4
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#define QLCNIC_MAX_VNIC_SDS_RINGS 4
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#define QLCNIC_83XX_MINIMUM_VECTOR 3
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#define QLCNIC_82XX_MINIMUM_VECTOR 2
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enum qlcnic_queue_type {
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QLCNIC_TX_QUEUE = 1,
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@ -962,6 +964,7 @@ struct qlcnic_ipaddr {
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#define QLCNIC_TX_INTR_SHARED 0x10000
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#define QLCNIC_APP_CHANGED_FLAGS 0x20000
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#define QLCNIC_HAS_PHYS_PORT_ID 0x40000
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#define QLCNIC_TSS_RSS 0x80000
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#define QLCNIC_IS_MSI_FAMILY(adapter) \
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((adapter)->flags & (QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED))
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@ -1058,6 +1061,9 @@ struct qlcnic_adapter {
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u8 drv_tx_rings; /* max tx rings supported by driver */
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u8 drv_sds_rings; /* max sds rings supported by driver */
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u8 drv_tss_rings; /* tss ring input */
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u8 drv_rss_rings; /* rss ring input */
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u8 rx_csum;
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u8 portnum;
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@ -1574,7 +1580,7 @@ int qlcnic_diag_alloc_res(struct net_device *netdev, int);
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netdev_tx_t qlcnic_xmit_frame(struct sk_buff *, struct net_device *);
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void qlcnic_set_tx_ring_count(struct qlcnic_adapter *, u8);
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void qlcnic_set_sds_ring_count(struct qlcnic_adapter *, u8);
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int qlcnic_setup_rings(struct qlcnic_adapter *, u8, u8);
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int qlcnic_setup_rings(struct qlcnic_adapter *);
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int qlcnic_validate_rings(struct qlcnic_adapter *, __u32, int);
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void qlcnic_alloc_lb_filters_mem(struct qlcnic_adapter *adapter);
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int qlcnic_enable_msix(struct qlcnic_adapter *, u32);
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@ -1614,7 +1620,7 @@ void qlcnic_set_vlan_config(struct qlcnic_adapter *,
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struct qlcnic_esw_func_cfg *);
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void qlcnic_set_eswitch_port_features(struct qlcnic_adapter *,
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struct qlcnic_esw_func_cfg *);
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int qlcnic_setup_tss_rss_intr(struct qlcnic_adapter *);
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void qlcnic_down(struct qlcnic_adapter *, struct net_device *);
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int qlcnic_up(struct qlcnic_adapter *, struct net_device *);
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void __qlcnic_down(struct qlcnic_adapter *, struct net_device *);
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@ -1671,11 +1677,8 @@ static inline int qlcnic_set_real_num_queues(struct qlcnic_adapter *adapter,
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err = netif_set_real_num_tx_queues(netdev, adapter->drv_tx_rings);
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if (err)
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dev_err(&adapter->pdev->dev, "failed to set %d Tx queues\n",
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adapter->drv_tx_rings);
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else
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dev_info(&adapter->pdev->dev, "Set %d Tx queues\n",
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adapter->drv_tx_rings);
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netdev_err(netdev, "failed to set %d Tx queues\n",
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adapter->drv_tx_rings);
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return err;
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}
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@ -290,11 +290,22 @@ int qlcnic_83xx_wrt_reg_indirect(struct qlcnic_adapter *adapter, ulong addr,
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}
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}
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int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter)
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static void qlcnic_83xx_enable_legacy(struct qlcnic_adapter *adapter)
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{
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int err, i, num_msix;
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struct qlcnic_hardware_context *ahw = adapter->ahw;
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/* MSI-X enablement failed, use legacy interrupt */
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adapter->tgt_status_reg = ahw->pci_base0 + QLC_83XX_INTX_PTR;
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adapter->tgt_mask_reg = ahw->pci_base0 + QLC_83XX_INTX_MASK;
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adapter->isr_int_vec = ahw->pci_base0 + QLC_83XX_INTX_TRGR;
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adapter->msix_entries[0].vector = adapter->pdev->irq;
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dev_info(&adapter->pdev->dev, "using legacy interrupt\n");
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}
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static int qlcnic_83xx_calculate_msix_vector(struct qlcnic_adapter *adapter)
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{
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int num_msix;
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num_msix = adapter->drv_sds_rings;
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/* account for AEN interrupt MSI-X based interrupts */
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@ -303,30 +314,44 @@ int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter)
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if (!(adapter->flags & QLCNIC_TX_INTR_SHARED))
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num_msix += adapter->drv_tx_rings;
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err = qlcnic_enable_msix(adapter, num_msix);
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if (err == -ENOMEM)
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return err;
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if (adapter->flags & QLCNIC_MSIX_ENABLED)
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num_msix = adapter->ahw->num_msix;
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else {
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if (qlcnic_sriov_vf_check(adapter))
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return -EINVAL;
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num_msix = 1;
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adapter->drv_tx_rings = QLCNIC_SINGLE_RING;
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return num_msix;
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}
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int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter)
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{
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struct qlcnic_hardware_context *ahw = adapter->ahw;
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int err, i, num_msix;
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if (adapter->flags & QLCNIC_TSS_RSS) {
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err = qlcnic_setup_tss_rss_intr(adapter);
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if (err < 0)
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return err;
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num_msix = ahw->num_msix;
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} else {
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num_msix = qlcnic_83xx_calculate_msix_vector(adapter);
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err = qlcnic_enable_msix(adapter, num_msix);
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if (err == -ENOMEM)
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return err;
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if (adapter->flags & QLCNIC_MSIX_ENABLED) {
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num_msix = ahw->num_msix;
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} else {
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if (qlcnic_sriov_vf_check(adapter))
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return -EINVAL;
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num_msix = 1;
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adapter->drv_tx_rings = QLCNIC_SINGLE_RING;
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}
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}
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/* setup interrupt mapping table for fw */
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ahw->intr_tbl = vzalloc(num_msix *
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sizeof(struct qlcnic_intrpt_config));
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if (!ahw->intr_tbl)
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return -ENOMEM;
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if (!(adapter->flags & QLCNIC_MSIX_ENABLED)) {
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/* MSI-X enablement failed, use legacy interrupt */
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adapter->tgt_status_reg = ahw->pci_base0 + QLC_83XX_INTX_PTR;
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adapter->tgt_mask_reg = ahw->pci_base0 + QLC_83XX_INTX_MASK;
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adapter->isr_int_vec = ahw->pci_base0 + QLC_83XX_INTX_TRGR;
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adapter->msix_entries[0].vector = adapter->pdev->irq;
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dev_info(&adapter->pdev->dev, "using legacy interrupt\n");
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}
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if (!(adapter->flags & QLCNIC_MSIX_ENABLED))
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qlcnic_83xx_enable_legacy(adapter);
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for (i = 0; i < num_msix; i++) {
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if (adapter->flags & QLCNIC_MSIX_ENABLED)
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@ -336,6 +361,7 @@ int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter)
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ahw->intr_tbl[i].id = i;
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ahw->intr_tbl[i].src = 0;
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}
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return 0;
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}
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@ -1286,8 +1312,8 @@ int qlcnic_83xx_create_tx_ctx(struct qlcnic_adapter *adapter,
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/* send the mailbox command*/
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err = qlcnic_issue_cmd(adapter, &cmd);
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if (err) {
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dev_err(&adapter->pdev->dev,
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"Failed to create Tx ctx in firmware 0x%x\n", err);
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netdev_err(adapter->netdev,
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"Failed to create Tx ctx in firmware 0x%x\n", err);
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goto out;
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}
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mbx_out = (struct qlcnic_tx_mbx_out *)&cmd.rsp.arg[2];
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@ -1298,8 +1324,9 @@ int qlcnic_83xx_create_tx_ctx(struct qlcnic_adapter *adapter,
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intr_mask = ahw->intr_tbl[adapter->drv_sds_rings + ring].src;
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tx->crb_intr_mask = ahw->pci_base0 + intr_mask;
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}
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dev_info(&adapter->pdev->dev, "Tx Context[0x%x] Created, state:0x%x\n",
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tx->ctx_id, mbx_out->state);
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netdev_info(adapter->netdev,
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"Tx Context[0x%x] Created, state:0x%x\n",
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tx->ctx_id, mbx_out->state);
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out:
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qlcnic_free_mbx_args(&cmd);
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return err;
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@ -736,6 +736,7 @@ static int qlcnic_set_channels(struct net_device *dev,
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channel->rx_count);
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return err;
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}
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adapter->drv_rss_rings = channel->rx_count;
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}
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if (channel->tx_count) {
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@ -746,10 +747,12 @@ static int qlcnic_set_channels(struct net_device *dev,
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channel->tx_count);
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return err;
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}
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adapter->drv_tss_rings = channel->tx_count;
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}
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err = qlcnic_setup_rings(adapter, channel->rx_count,
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channel->tx_count);
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adapter->flags |= QLCNIC_TSS_RSS;
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err = qlcnic_setup_rings(adapter);
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netdev_info(dev, "Allocated %d SDS rings and %d Tx rings\n",
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adapter->drv_sds_rings, adapter->drv_tx_rings);
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@ -603,9 +603,6 @@ void qlcnic_set_tx_ring_count(struct qlcnic_adapter *adapter, u8 tx_cnt)
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QLCNIC_TX_QUEUE);
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else
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adapter->drv_tx_rings = tx_cnt;
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dev_info(&adapter->pdev->dev, "Set %d Tx rings\n",
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adapter->drv_tx_rings);
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}
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void qlcnic_set_sds_ring_count(struct qlcnic_adapter *adapter, u8 rx_cnt)
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@ -616,24 +613,78 @@ void qlcnic_set_sds_ring_count(struct qlcnic_adapter *adapter, u8 rx_cnt)
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QLCNIC_RX_QUEUE);
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else
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adapter->drv_sds_rings = rx_cnt;
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dev_info(&adapter->pdev->dev, "Set %d SDS rings\n",
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adapter->drv_sds_rings);
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}
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int qlcnic_enable_msix(struct qlcnic_adapter *adapter, u32 num_msix)
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int qlcnic_setup_tss_rss_intr(struct qlcnic_adapter *adapter)
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{
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struct pci_dev *pdev = adapter->pdev;
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int drv_tx_rings, drv_sds_rings, tx_vector;
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int err = -1, i;
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int num_msix = 0, err = 0, vector;
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if (adapter->flags & QLCNIC_TX_INTR_SHARED) {
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drv_tx_rings = 0;
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tx_vector = 0;
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} else {
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drv_tx_rings = adapter->drv_tx_rings;
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tx_vector = 1;
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}
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adapter->flags &= ~QLCNIC_TSS_RSS;
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if (adapter->drv_tss_rings > 0)
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num_msix += adapter->drv_tss_rings;
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else
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num_msix += adapter->drv_tx_rings;
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if (adapter->drv_rss_rings > 0)
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num_msix += adapter->drv_rss_rings;
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else
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num_msix += adapter->drv_sds_rings;
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if (qlcnic_83xx_check(adapter))
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num_msix += 1;
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if (!adapter->msix_entries) {
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adapter->msix_entries = kcalloc(num_msix,
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sizeof(struct msix_entry),
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GFP_KERNEL);
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if (!adapter->msix_entries)
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return -ENOMEM;
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}
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restore:
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for (vector = 0; vector < num_msix; vector++)
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adapter->msix_entries[vector].entry = vector;
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err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
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if (err == 0) {
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adapter->ahw->num_msix = num_msix;
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if (adapter->drv_tss_rings > 0)
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adapter->drv_tx_rings = adapter->drv_tss_rings;
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if (adapter->drv_rss_rings > 0)
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adapter->drv_sds_rings = adapter->drv_rss_rings;
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} else {
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netdev_info(adapter->netdev,
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"Unable to allocate %d MSI-X vectors, Available vectors %d\n",
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num_msix, err);
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num_msix = adapter->drv_tx_rings + adapter->drv_sds_rings;
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/* Set rings to 0 so we can restore original TSS/RSS count */
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adapter->drv_tss_rings = 0;
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adapter->drv_rss_rings = 0;
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if (qlcnic_83xx_check(adapter))
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num_msix += 1;
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netdev_info(adapter->netdev,
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"Restoring %d Tx, %d SDS rings for total %d vectors.\n",
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adapter->drv_tx_rings, adapter->drv_sds_rings,
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num_msix);
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goto restore;
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err = -EIO;
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}
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return err;
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}
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int qlcnic_enable_msix(struct qlcnic_adapter *adapter, u32 num_msix)
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{
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struct pci_dev *pdev = adapter->pdev;
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int err = -1, vector;
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if (!adapter->msix_entries) {
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adapter->msix_entries = kcalloc(num_msix,
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@ -643,47 +694,43 @@ int qlcnic_enable_msix(struct qlcnic_adapter *adapter, u32 num_msix)
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return -ENOMEM;
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}
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adapter->drv_sds_rings = QLCNIC_SINGLE_RING;
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adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
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if (adapter->ahw->msix_supported) {
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enable_msix:
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for (i = 0; i < num_msix; i++)
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adapter->msix_entries[i].entry = i;
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enable_msix:
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for (vector = 0; vector < num_msix; vector++)
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adapter->msix_entries[vector].entry = vector;
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err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
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if (err == 0) {
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adapter->flags |= QLCNIC_MSIX_ENABLED;
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if (qlcnic_83xx_check(adapter)) {
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adapter->ahw->num_msix = num_msix;
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/* subtract mail box and tx ring vectors */
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adapter->drv_sds_rings = num_msix -
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drv_tx_rings - 1;
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} else {
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adapter->ahw->num_msix = num_msix;
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if (qlcnic_check_multi_tx(adapter) &&
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!adapter->ahw->diag_test)
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drv_sds_rings = num_msix - drv_tx_rings;
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else
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drv_sds_rings = num_msix;
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adapter->drv_sds_rings = drv_sds_rings;
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}
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adapter->ahw->num_msix = num_msix;
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dev_info(&pdev->dev, "using msi-x interrupts\n");
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return err;
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} else if (err > 0) {
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dev_info(&pdev->dev,
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"Unable to allocate %d MSI-X interrupt vectors\n",
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num_msix);
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if (qlcnic_83xx_check(adapter)) {
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if (err < (QLC_83XX_MINIMUM_VECTOR - tx_vector))
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return err;
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err -= drv_tx_rings + 1;
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"Unable to allocate %d MSI-X vectors, Available vectors %d\n",
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num_msix, err);
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if (qlcnic_82xx_check(adapter)) {
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num_msix = rounddown_pow_of_two(err);
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num_msix += drv_tx_rings + 1;
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if (err < QLCNIC_82XX_MINIMUM_VECTOR)
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return -EIO;
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} else {
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num_msix = rounddown_pow_of_two(err);
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if (qlcnic_check_multi_tx(adapter))
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num_msix += drv_tx_rings;
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num_msix = rounddown_pow_of_two(err - 1);
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num_msix += 1;
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if (err < QLCNIC_83XX_MINIMUM_VECTOR)
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return -EIO;
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}
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if (qlcnic_82xx_check(adapter) &&
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!qlcnic_check_multi_tx(adapter)) {
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adapter->drv_sds_rings = num_msix;
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adapter->drv_tx_rings = QLCNIC_SINGLE_RING;
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} else {
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/* Distribute vectors equally */
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adapter->drv_tx_rings = num_msix / 2;
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adapter->drv_sds_rings = adapter->drv_tx_rings;
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}
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if (num_msix) {
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@ -694,14 +741,29 @@ int qlcnic_enable_msix(struct qlcnic_adapter *adapter, u32 num_msix)
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}
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} else {
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dev_info(&pdev->dev,
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"Unable to allocate %d MSI-X interrupt vectors\n",
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num_msix);
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"Unable to allocate %d MSI-X vectors, err=%d\n",
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num_msix, err);
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return err;
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}
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}
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return err;
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}
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static int qlcnic_82xx_calculate_msix_vector(struct qlcnic_adapter *adapter)
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{
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int num_msix;
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num_msix = adapter->drv_sds_rings;
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if (qlcnic_check_multi_tx(adapter))
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num_msix += adapter->drv_tx_rings;
|
||||
else
|
||||
num_msix += QLCNIC_SINGLE_RING;
|
||||
|
||||
return num_msix;
|
||||
}
|
||||
|
||||
static int qlcnic_enable_msi_legacy(struct qlcnic_adapter *adapter)
|
||||
{
|
||||
int err = 0;
|
||||
|
|
@ -740,21 +802,25 @@ static int qlcnic_82xx_setup_intr(struct qlcnic_adapter *adapter)
|
|||
{
|
||||
int num_msix, err = 0;
|
||||
|
||||
num_msix = adapter->drv_sds_rings;
|
||||
|
||||
if (qlcnic_check_multi_tx(adapter))
|
||||
num_msix += adapter->drv_tx_rings;
|
||||
|
||||
err = qlcnic_enable_msix(adapter, num_msix);
|
||||
if (err == -ENOMEM)
|
||||
return err;
|
||||
|
||||
if (!(adapter->flags & QLCNIC_MSIX_ENABLED)) {
|
||||
qlcnic_disable_multi_tx(adapter);
|
||||
|
||||
err = qlcnic_enable_msi_legacy(adapter);
|
||||
if (!err)
|
||||
if (adapter->flags & QLCNIC_TSS_RSS) {
|
||||
err = qlcnic_setup_tss_rss_intr(adapter);
|
||||
if (err < 0)
|
||||
return err;
|
||||
num_msix = adapter->ahw->num_msix;
|
||||
} else {
|
||||
num_msix = qlcnic_82xx_calculate_msix_vector(adapter);
|
||||
|
||||
err = qlcnic_enable_msix(adapter, num_msix);
|
||||
if (err == -ENOMEM)
|
||||
return err;
|
||||
|
||||
if (!(adapter->flags & QLCNIC_MSIX_ENABLED)) {
|
||||
qlcnic_disable_multi_tx(adapter);
|
||||
|
||||
err = qlcnic_enable_msi_legacy(adapter);
|
||||
if (!err)
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
|
@ -3834,7 +3900,7 @@ int qlcnic_validate_rings(struct qlcnic_adapter *adapter, __u32 ring_cnt,
|
|||
return 0;
|
||||
}
|
||||
|
||||
int qlcnic_setup_rings(struct qlcnic_adapter *adapter, u8 rx_cnt, u8 tx_cnt)
|
||||
int qlcnic_setup_rings(struct qlcnic_adapter *adapter)
|
||||
{
|
||||
struct net_device *netdev = adapter->netdev;
|
||||
int err;
|
||||
|
|
@ -3855,12 +3921,6 @@ int qlcnic_setup_rings(struct qlcnic_adapter *adapter, u8 rx_cnt, u8 tx_cnt)
|
|||
|
||||
qlcnic_teardown_intr(adapter);
|
||||
|
||||
/* compute and set default and max tx/sds rings */
|
||||
qlcnic_set_tx_ring_count(adapter, tx_cnt);
|
||||
qlcnic_set_sds_ring_count(adapter, rx_cnt);
|
||||
|
||||
netif_set_real_num_tx_queues(netdev, adapter->drv_tx_rings);
|
||||
|
||||
err = qlcnic_setup_intr(adapter);
|
||||
if (err) {
|
||||
kfree(adapter->msix_entries);
|
||||
|
|
@ -3868,6 +3928,8 @@ int qlcnic_setup_rings(struct qlcnic_adapter *adapter, u8 rx_cnt, u8 tx_cnt)
|
|||
return err;
|
||||
}
|
||||
|
||||
netif_set_real_num_tx_queues(netdev, adapter->drv_tx_rings);
|
||||
|
||||
if (qlcnic_83xx_check(adapter)) {
|
||||
qlcnic_83xx_initialize_nic(adapter, 1);
|
||||
err = qlcnic_83xx_setup_mbx_intr(adapter);
|
||||
|
|
|
|||
Loading…
Reference in a new issue