diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c')
-rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 255 |
1 files changed, 175 insertions, 80 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 59a62bb..038bfc8 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -58,7 +58,7 @@ const char ixgbevf_driver_name[] = "ixgbevf"; static const char ixgbevf_driver_string[] = "Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver"; -#define DRV_VERSION "2.7.12-k" +#define DRV_VERSION "2.11.3-k" const char ixgbevf_driver_version[] = DRV_VERSION; static char ixgbevf_copyright[] = "Copyright (c) 2009 - 2012 Intel Corporation."; @@ -251,7 +251,7 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector, #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) if (unlikely(count && netif_carrier_ok(tx_ring->netdev) && - (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { + (ixgbevf_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) { /* Make sure that anybody stopping the queue after this * sees the new next_to_clean. */ @@ -300,6 +300,30 @@ static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector, } /** + * ixgbevf_rx_skb - Helper function to determine proper Rx method + * @q_vector: structure containing interrupt and ring information + * @skb: packet to send up + * @status: hardware indication of status of receive + * @rx_desc: rx descriptor + **/ +static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector, + struct sk_buff *skb, u8 status, + union ixgbe_adv_rx_desc *rx_desc) +{ +#ifdef CONFIG_NET_RX_BUSY_POLL + skb_mark_napi_id(skb, &q_vector->napi); + + if (ixgbevf_qv_busy_polling(q_vector)) { + netif_receive_skb(skb); + /* exit early if we busy polled */ + return; + } +#endif /* CONFIG_NET_RX_BUSY_POLL */ + + ixgbevf_receive_skb(q_vector, skb, status, rx_desc); +} + +/** * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum * @ring: pointer to Rx descriptor ring structure * @status_err: hardware indication of status of receive @@ -396,9 +420,9 @@ static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter, IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, qmask); } -static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, - struct ixgbevf_ring *rx_ring, - int budget) +static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, + struct ixgbevf_ring *rx_ring, + int budget) { struct ixgbevf_adapter *adapter = q_vector->adapter; struct pci_dev *pdev = adapter->pdev; @@ -473,15 +497,6 @@ static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, total_rx_bytes += skb->len; total_rx_packets++; - /* - * Work around issue of some types of VM to VM loop back - * packets not getting split correctly - */ - if (staterr & IXGBE_RXD_STAT_LB) { - u32 header_fixup_len = skb_headlen(skb); - if (header_fixup_len < 14) - skb_push(skb, header_fixup_len); - } skb->protocol = eth_type_trans(skb, rx_ring->netdev); /* Workaround hardware that can't do proper VEPA multicast @@ -494,7 +509,7 @@ static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, goto next_desc; } - ixgbevf_receive_skb(q_vector, skb, staterr, rx_desc); + ixgbevf_rx_skb(q_vector, skb, staterr, rx_desc); next_desc: rx_desc->wb.upper.status_error = 0; @@ -514,7 +529,7 @@ next_desc: } rx_ring->next_to_clean = i; - cleaned_count = IXGBE_DESC_UNUSED(rx_ring); + cleaned_count = ixgbevf_desc_unused(rx_ring); if (cleaned_count) ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count); @@ -526,7 +541,7 @@ next_desc: q_vector->rx.total_packets += total_rx_packets; q_vector->rx.total_bytes += total_rx_bytes; - return !!budget; + return total_rx_packets; } /** @@ -549,6 +564,11 @@ static int ixgbevf_poll(struct napi_struct *napi, int budget) ixgbevf_for_each_ring(ring, q_vector->tx) clean_complete &= ixgbevf_clean_tx_irq(q_vector, ring); +#ifdef CONFIG_NET_RX_BUSY_POLL + if (!ixgbevf_qv_lock_napi(q_vector)) + return budget; +#endif + /* attempt to distribute budget to each queue fairly, but don't allow * the budget to go below 1 because we'll exit polling */ if (q_vector->rx.count > 1) @@ -558,10 +578,15 @@ static int ixgbevf_poll(struct napi_struct *napi, int 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); + 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); +#endif + /* If all work not completed, return budget and keep polling */ if (!clean_complete) return budget; @@ -580,7 +605,7 @@ static int ixgbevf_poll(struct napi_struct *napi, int budget) * ixgbevf_write_eitr - write VTEITR register in hardware specific way * @q_vector: structure containing interrupt and ring information */ -static void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector) +void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector) { struct ixgbevf_adapter *adapter = q_vector->adapter; struct ixgbe_hw *hw = &adapter->hw; @@ -596,6 +621,40 @@ static void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector) IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg); } +#ifdef CONFIG_NET_RX_BUSY_POLL +/* must be called with local_bh_disable()d */ +static int ixgbevf_busy_poll_recv(struct napi_struct *napi) +{ + struct ixgbevf_q_vector *q_vector = + container_of(napi, struct ixgbevf_q_vector, napi); + struct ixgbevf_adapter *adapter = q_vector->adapter; + struct ixgbevf_ring *ring; + int found = 0; + + if (test_bit(__IXGBEVF_DOWN, &adapter->state)) + return LL_FLUSH_FAILED; + + if (!ixgbevf_qv_lock_poll(q_vector)) + return LL_FLUSH_BUSY; + + ixgbevf_for_each_ring(ring, q_vector->rx) { + found = ixgbevf_clean_rx_irq(q_vector, ring, 4); +#ifdef BP_EXTENDED_STATS + if (found) + ring->bp_cleaned += found; + else + ring->bp_misses++; +#endif + if (found) + break; + } + + ixgbevf_qv_unlock_poll(q_vector); + + return found; +} +#endif /* CONFIG_NET_RX_BUSY_POLL */ + /** * ixgbevf_configure_msix - Configure MSI-X hardware * @adapter: board private structure @@ -756,37 +815,12 @@ static void ixgbevf_set_itr(struct ixgbevf_q_vector *q_vector) static irqreturn_t ixgbevf_msix_other(int irq, void *data) { struct ixgbevf_adapter *adapter = data; - struct pci_dev *pdev = adapter->pdev; struct ixgbe_hw *hw = &adapter->hw; - u32 msg; - bool got_ack = false; hw->mac.get_link_status = 1; - if (!hw->mbx.ops.check_for_ack(hw)) - got_ack = true; - - if (!hw->mbx.ops.check_for_msg(hw)) { - hw->mbx.ops.read(hw, &msg, 1); - - if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG) { - mod_timer(&adapter->watchdog_timer, - round_jiffies(jiffies + 1)); - adapter->link_up = false; - } - if (msg & IXGBE_VT_MSGTYPE_NACK) - dev_info(&pdev->dev, - "Last Request of type %2.2x to PF Nacked\n", - msg & 0xFF); - hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFSTS; - } - - /* checking for the ack clears the PFACK bit. Place - * it back in the v2p_mailbox cache so that anyone - * polling for an ack will not miss it - */ - if (got_ack) - hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFACK; + if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) + mod_timer(&adapter->watchdog_timer, jiffies); IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, adapter->eims_other); @@ -1107,6 +1141,21 @@ static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index) IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl); } +static void ixgbevf_setup_psrtype(struct ixgbevf_adapter *adapter) +{ + struct ixgbe_hw *hw = &adapter->hw; + + /* PSRTYPE must be initialized in 82599 */ + u32 psrtype = IXGBE_PSRTYPE_TCPHDR | IXGBE_PSRTYPE_UDPHDR | + IXGBE_PSRTYPE_IPV4HDR | IXGBE_PSRTYPE_IPV6HDR | + IXGBE_PSRTYPE_L2HDR; + + if (adapter->num_rx_queues > 1) + psrtype |= 1 << 29; + + IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); +} + static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; @@ -1154,8 +1203,7 @@ static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter) int i, j; u32 rdlen; - /* PSRTYPE must be initialized in 82599 */ - IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0); + ixgbevf_setup_psrtype(adapter); /* set_rx_buffer_len must be called before ring initialization */ ixgbevf_set_rx_buffer_len(adapter); @@ -1293,6 +1341,9 @@ static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter) for (q_idx = 0; q_idx < q_vectors; q_idx++) { q_vector = adapter->q_vector[q_idx]; +#ifdef CONFIG_NET_RX_BUSY_POLL + ixgbevf_qv_init_lock(adapter->q_vector[q_idx]); +#endif napi_enable(&q_vector->napi); } } @@ -1306,6 +1357,12 @@ static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter) for (q_idx = 0; q_idx < q_vectors; q_idx++) { q_vector = adapter->q_vector[q_idx]; napi_disable(&q_vector->napi); +#ifdef CONFIG_NET_RX_BUSY_POLL + while (!ixgbevf_qv_disable(adapter->q_vector[q_idx])) { + pr_info("QV %d locked\n", q_idx); + usleep_range(1000, 20000); + } +#endif /* CONFIG_NET_RX_BUSY_POLL */ } } @@ -1323,31 +1380,55 @@ static void ixgbevf_configure(struct ixgbevf_adapter *adapter) for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbevf_ring *ring = &adapter->rx_ring[i]; ixgbevf_alloc_rx_buffers(adapter, ring, - IXGBE_DESC_UNUSED(ring)); + ixgbevf_desc_unused(ring)); } } -#define IXGBE_MAX_RX_DESC_POLL 10 -static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter, - int rxr) +#define IXGBEVF_MAX_RX_DESC_POLL 10 +static void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter, + int rxr) { struct ixgbe_hw *hw = &adapter->hw; + int wait_loop = IXGBEVF_MAX_RX_DESC_POLL; + u32 rxdctl; int j = adapter->rx_ring[rxr].reg_idx; - int k; - for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) { - if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE) - break; - else - msleep(1); - } - if (k >= IXGBE_MAX_RX_DESC_POLL) { - hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d " - "not set within the polling period\n", rxr); - } + do { + usleep_range(1000, 2000); + rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)); + } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); + + if (!wait_loop) + hw_dbg(hw, "RXDCTL.ENABLE queue %d not set while polling\n", + rxr); + + ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr], + (adapter->rx_ring[rxr].count - 1)); +} + +static void ixgbevf_disable_rx_queue(struct ixgbevf_adapter *adapter, + struct ixgbevf_ring *ring) +{ + struct ixgbe_hw *hw = &adapter->hw; + int wait_loop = IXGBEVF_MAX_RX_DESC_POLL; + u32 rxdctl; + u8 reg_idx = ring->reg_idx; + + rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(reg_idx)); + rxdctl &= ~IXGBE_RXDCTL_ENABLE; + + /* write value back with RXDCTL.ENABLE bit cleared */ + IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(reg_idx), rxdctl); - ixgbevf_release_rx_desc(hw, &adapter->rx_ring[rxr], - adapter->rx_ring[rxr].count - 1); + /* the hardware may take up to 100us to really disable the rx queue */ + do { + udelay(10); + rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(reg_idx)); + } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE)); + + if (!wait_loop) + hw_dbg(hw, "RXDCTL.ENABLE queue %d not cleared while polling\n", + reg_idx); } static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter) @@ -1545,8 +1626,6 @@ void ixgbevf_up(struct ixgbevf_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; - ixgbevf_negotiate_api(adapter); - ixgbevf_reset_queues(adapter); ixgbevf_configure(adapter); @@ -1679,7 +1758,10 @@ void ixgbevf_down(struct ixgbevf_adapter *adapter) /* signal that we are down to the interrupt handler */ set_bit(__IXGBEVF_DOWN, &adapter->state); - /* disable receives */ + + /* disable all enabled rx queues */ + for (i = 0; i < adapter->num_rx_queues; i++) + ixgbevf_disable_rx_queue(adapter, &adapter->rx_ring[i]); netif_tx_disable(netdev); @@ -1733,10 +1815,12 @@ void ixgbevf_reset(struct ixgbevf_adapter *adapter) struct ixgbe_hw *hw = &adapter->hw; struct net_device *netdev = adapter->netdev; - if (hw->mac.ops.reset_hw(hw)) + if (hw->mac.ops.reset_hw(hw)) { hw_dbg(hw, "PF still resetting\n"); - else + } else { hw->mac.ops.init_hw(hw); + ixgbevf_negotiate_api(adapter); + } if (is_valid_ether_addr(adapter->hw.mac.addr)) { memcpy(netdev->dev_addr, adapter->hw.mac.addr, @@ -1929,6 +2013,9 @@ static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter) q_vector->v_idx = q_idx; netif_napi_add(adapter->netdev, &q_vector->napi, ixgbevf_poll, 64); +#ifdef CONFIG_NET_RX_BUSY_POLL + napi_hash_add(&q_vector->napi); +#endif adapter->q_vector[q_idx] = q_vector; } @@ -1938,6 +2025,9 @@ err_out: while (q_idx) { q_idx--; q_vector = adapter->q_vector[q_idx]; +#ifdef CONFIG_NET_RX_BUSY_POLL + napi_hash_del(&q_vector->napi); +#endif netif_napi_del(&q_vector->napi); kfree(q_vector); adapter->q_vector[q_idx] = NULL; @@ -1961,6 +2051,9 @@ static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter) struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx]; adapter->q_vector[q_idx] = NULL; +#ifdef CONFIG_NET_RX_BUSY_POLL + napi_hash_del(&q_vector->napi); +#endif netif_napi_del(&q_vector->napi); kfree(q_vector); } @@ -2072,6 +2165,9 @@ static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter) hw->mac.max_tx_queues = 2; hw->mac.max_rx_queues = 2; + /* lock to protect mailbox accesses */ + spin_lock_init(&adapter->mbx_lock); + err = hw->mac.ops.reset_hw(hw); if (err) { dev_info(&pdev->dev, @@ -2082,6 +2178,7 @@ static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter) pr_err("init_shared_code failed: %d\n", err); goto out; } + ixgbevf_negotiate_api(adapter); err = hw->mac.ops.get_mac_addr(hw, hw->mac.addr); if (err) dev_info(&pdev->dev, "Error reading MAC address\n"); @@ -2097,9 +2194,6 @@ static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter) memcpy(hw->mac.addr, netdev->dev_addr, netdev->addr_len); } - /* lock to protect mailbox accesses */ - spin_lock_init(&adapter->mbx_lock); - /* Enable dynamic interrupt throttling rates */ adapter->rx_itr_setting = 1; adapter->tx_itr_setting = 1; @@ -2620,8 +2714,6 @@ 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) @@ -3010,7 +3102,7 @@ static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring *tx_ring, int size) /* We need to check again in a case another CPU has just * made room available. */ - if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) + if (likely(ixgbevf_desc_unused(tx_ring) < size)) return -EBUSY; /* A reprieve! - use start_queue because it doesn't call schedule */ @@ -3021,7 +3113,7 @@ static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring *tx_ring, int size) static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring *tx_ring, int size) { - if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) + if (likely(ixgbevf_desc_unused(tx_ring) >= size)) return 0; return __ixgbevf_maybe_stop_tx(tx_ring, size); } @@ -3216,6 +3308,8 @@ static int ixgbevf_resume(struct pci_dev *pdev) } pci_set_master(pdev); + ixgbevf_reset(adapter); + rtnl_lock(); err = ixgbevf_init_interrupt_scheme(adapter); rtnl_unlock(); @@ -3224,8 +3318,6 @@ static int ixgbevf_resume(struct pci_dev *pdev) return err; } - ixgbevf_reset(adapter); - if (netif_running(netdev)) { err = ixgbevf_open(netdev); if (err) @@ -3293,6 +3385,9 @@ static const struct net_device_ops ixgbevf_netdev_ops = { .ndo_tx_timeout = ixgbevf_tx_timeout, .ndo_vlan_rx_add_vid = ixgbevf_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = ixgbevf_vlan_rx_kill_vid, +#ifdef CONFIG_NET_RX_BUSY_POLL + .ndo_busy_poll = ixgbevf_busy_poll_recv, +#endif }; static void ixgbevf_assign_netdev_ops(struct net_device *dev) |