From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- .../net/ethernet/intel/i40evf/i40evf_main.c | 647 +++++++++++++-------- 1 file changed, 400 insertions(+), 247 deletions(-) (limited to 'kernel/drivers/net/ethernet/intel/i40evf/i40evf_main.c') diff --git a/kernel/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/kernel/drivers/net/ethernet/intel/i40evf/i40evf_main.c index 7c53aca4b..99d2cffae 100644 --- a/kernel/drivers/net/ethernet/intel/i40evf/i40evf_main.c +++ b/kernel/drivers/net/ethernet/intel/i40evf/i40evf_main.c @@ -34,10 +34,10 @@ char i40evf_driver_name[] = "i40evf"; static const char i40evf_driver_string[] = "Intel(R) XL710/X710 Virtual Function Network Driver"; -#define DRV_VERSION "1.2.25" +#define DRV_VERSION "1.3.33" const char i40evf_driver_version[] = DRV_VERSION; static const char i40evf_copyright[] = - "Copyright (c) 2013 - 2014 Intel Corporation."; + "Copyright (c) 2013 - 2015 Intel Corporation."; /* i40evf_pci_tbl - PCI Device ID Table * @@ -49,6 +49,7 @@ static const char i40evf_copyright[] = */ static const struct pci_device_id i40evf_pci_tbl[] = { {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0}, + {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF), 0}, /* required last entry */ {0, } }; @@ -170,7 +171,8 @@ static void i40evf_tx_timeout(struct net_device *netdev) struct i40evf_adapter *adapter = netdev_priv(netdev); adapter->tx_timeout_count++; - if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) { + if (!(adapter->flags & (I40EVF_FLAG_RESET_PENDING | + I40EVF_FLAG_RESET_NEEDED))) { adapter->flags |= I40EVF_FLAG_RESET_NEEDED; schedule_work(&adapter->reset_task); } @@ -202,7 +204,7 @@ static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter) wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK | I40E_VFINT_DYN_CTL01_ITR_INDX_MASK); - wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA_ADMINQ_MASK); + wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK); /* read flush */ rd32(hw, I40E_VFGEN_RSTAT); @@ -239,11 +241,11 @@ void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask) int i; for (i = 1; i < adapter->num_msix_vectors; i++) { - if (mask & (1 << (i - 1))) { + if (mask & BIT(i - 1)) { wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), I40E_VFINT_DYN_CTLN1_INTENA_MASK | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | - I40E_VFINT_DYN_CTLN_CLEARPBA_MASK); + I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK); } } } @@ -261,17 +263,17 @@ static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask) if (mask & 1) { dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01); - dyn_ctl |= I40E_VFINT_DYN_CTLN_SWINT_TRIG_MASK | + dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | - I40E_VFINT_DYN_CTLN_CLEARPBA_MASK; + I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl); } for (i = 1; i < adapter->num_msix_vectors; i++) { - if (mask & (1 << i)) { + if (mask & BIT(i)) { dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1)); - dyn_ctl |= I40E_VFINT_DYN_CTLN_SWINT_TRIG_MASK | + dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | - I40E_VFINT_DYN_CTLN_CLEARPBA_MASK; + I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl); } } @@ -280,6 +282,7 @@ static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask) /** * i40evf_irq_enable - Enable default interrupt generation settings * @adapter: board private structure + * @flush: boolean value whether to run rd32() **/ void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush) { @@ -303,15 +306,14 @@ static irqreturn_t i40evf_msix_aq(int irq, void *data) struct i40evf_adapter *adapter = netdev_priv(netdev); struct i40e_hw *hw = &adapter->hw; u32 val; - u32 ena_mask; /* handle non-queue interrupts */ - val = rd32(hw, I40E_VFINT_ICR01); - ena_mask = rd32(hw, I40E_VFINT_ICR0_ENA1); + rd32(hw, I40E_VFINT_ICR01); + rd32(hw, I40E_VFINT_ICR0_ENA1); - val = rd32(hw, I40E_VFINT_DYN_CTL01); - val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK; + val = rd32(hw, I40E_VFINT_DYN_CTL01) | + I40E_VFINT_DYN_CTL01_CLEARPBA_MASK; wr32(hw, I40E_VFINT_DYN_CTL01, val); /* schedule work on the private workqueue */ @@ -332,7 +334,7 @@ static irqreturn_t i40evf_msix_clean_rings(int irq, void *data) if (!q_vector->tx.ring && !q_vector->rx.ring) return IRQ_HANDLED; - napi_schedule(&q_vector->napi); + napi_schedule_irqoff(&q_vector->napi); return IRQ_HANDLED; } @@ -355,6 +357,7 @@ i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx) q_vector->rx.ring = rx_ring; q_vector->rx.count++; q_vector->rx.latency_range = I40E_LOW_LATENCY; + q_vector->itr_countdown = ITR_COUNTDOWN_START; } /** @@ -375,8 +378,9 @@ i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx) q_vector->tx.ring = tx_ring; q_vector->tx.count++; q_vector->tx.latency_range = I40E_LOW_LATENCY; + q_vector->itr_countdown = ITR_COUNTDOWN_START; q_vector->num_ringpairs++; - q_vector->ring_mask |= (1 << t_idx); + q_vector->ring_mask |= BIT(t_idx); } /** @@ -405,7 +409,7 @@ static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter) /* The ideal configuration... * We have enough vectors to map one per queue. */ - if (q_vectors == (rxr_remaining * 2)) { + if (q_vectors >= (rxr_remaining * 2)) { for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx); @@ -442,6 +446,29 @@ out: return err; } +#ifdef CONFIG_NET_POLL_CONTROLLER +/** + * i40evf_netpoll - A Polling 'interrupt' handler + * @netdev: network interface device structure + * + * This is used by netconsole to send skbs without having to re-enable + * interrupts. It's not called while the normal interrupt routine is executing. + **/ +static void i40evf_netpoll(struct net_device *netdev) +{ + struct i40evf_adapter *adapter = netdev_priv(netdev); + int q_vectors = adapter->num_msix_vectors - NONQ_VECS; + int i; + + /* if interface is down do nothing */ + if (test_bit(__I40E_DOWN, &adapter->vsi.state)) + return; + + for (i = 0; i < q_vectors; i++) + i40evf_msix_clean_rings(0, adapter->q_vector[i]); +} + +#endif /** * i40evf_request_traffic_irqs - Initialize MSI-X interrupts * @adapter: board private structure @@ -487,8 +514,7 @@ i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename) q_vector); if (err) { dev_info(&adapter->pdev->dev, - "%s: request_irq failed, error: %d\n", - __func__, err); + "Request_irq failed, error: %d\n", err); goto free_queue_irqs; } /* assign the mask for this irq */ @@ -729,6 +755,8 @@ static int i40evf_vlan_rx_add_vid(struct net_device *netdev, { struct i40evf_adapter *adapter = netdev_priv(netdev); + if (!VLAN_ALLOWED(adapter)) + return -EIO; if (i40evf_add_vlan(adapter, vid) == NULL) return -ENOMEM; return 0; @@ -744,8 +772,11 @@ static int i40evf_vlan_rx_kill_vid(struct net_device *netdev, { struct i40evf_adapter *adapter = netdev_priv(netdev); - i40evf_del_vlan(adapter, vid); - return 0; + if (VLAN_ALLOWED(adapter)) { + i40evf_del_vlan(adapter, vid); + return 0; + } + return -EIO; } /** @@ -835,6 +866,15 @@ static int i40evf_set_mac(struct net_device *netdev, void *p) if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) return 0; + if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF) + return -EPERM; + + f = i40evf_find_filter(adapter, hw->mac.addr); + if (f) { + f->remove = true; + adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; + } + f = i40evf_add_filter(adapter, addr->sa_data); if (f) { ether_addr_copy(hw->mac.addr, addr->sa_data); @@ -854,6 +894,7 @@ static void i40evf_set_rx_mode(struct net_device *netdev) struct i40evf_mac_filter *f, *ftmp; struct netdev_hw_addr *uca; struct netdev_hw_addr *mca; + struct netdev_hw_addr *ha; int count = 50; /* add addr if not already in the filter list */ @@ -875,27 +916,27 @@ static void i40evf_set_rx_mode(struct net_device *netdev) } /* remove filter if not in netdev list */ list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { - bool found = false; - - if (is_multicast_ether_addr(f->macaddr)) { - netdev_for_each_mc_addr(mca, netdev) { - if (ether_addr_equal(mca->addr, f->macaddr)) { - found = true; - break; - } - } - } else { - netdev_for_each_uc_addr(uca, netdev) { - if (ether_addr_equal(uca->addr, f->macaddr)) { - found = true; - break; - } - } - } - if (found) { - f->remove = true; - adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; - } + netdev_for_each_mc_addr(mca, netdev) + if (ether_addr_equal(mca->addr, f->macaddr)) + goto bottom_of_search_loop; + + netdev_for_each_uc_addr(uca, netdev) + if (ether_addr_equal(uca->addr, f->macaddr)) + goto bottom_of_search_loop; + + for_each_dev_addr(netdev, ha) + if (ether_addr_equal(ha->addr, f->macaddr)) + goto bottom_of_search_loop; + + if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) + goto bottom_of_search_loop; + + /* f->macaddr wasn't found in uc, mc, or ha list so delete it */ + f->remove = true; + adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; + +bottom_of_search_loop: + continue; } clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); } @@ -1107,6 +1148,8 @@ static int i40evf_alloc_queues(struct i40evf_adapter *adapter) tx_ring->netdev = adapter->netdev; tx_ring->dev = &adapter->pdev->dev; tx_ring->count = adapter->tx_desc_count; + if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) + tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR; adapter->tx_rings[i] = tx_ring; rx_ring = &tx_ring[1]; @@ -1161,13 +1204,120 @@ static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) for (vector = 0; vector < v_budget; vector++) adapter->msix_entries[vector].entry = vector; - i40evf_acquire_msix_vectors(adapter, v_budget); + err = i40evf_acquire_msix_vectors(adapter, v_budget); out: adapter->netdev->real_num_tx_queues = pairs; return err; } +/** + * i40e_configure_rss_aq - Prepare for RSS using AQ commands + * @vsi: vsi structure + * @seed: RSS hash seed + **/ +static void i40evf_configure_rss_aq(struct i40e_vsi *vsi, const u8 *seed) +{ + struct i40e_aqc_get_set_rss_key_data rss_key; + struct i40evf_adapter *adapter = vsi->back; + struct i40e_hw *hw = &adapter->hw; + int ret = 0, i; + u8 *rss_lut; + + if (!vsi->id) + return; + + if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) { + /* bail because we already have a command pending */ + dev_err(&adapter->pdev->dev, "Cannot confiure RSS, command %d pending\n", + adapter->current_op); + return; + } + + memset(&rss_key, 0, sizeof(rss_key)); + memcpy(&rss_key, seed, sizeof(rss_key)); + + rss_lut = kzalloc(((I40E_VFQF_HLUT_MAX_INDEX + 1) * 4), GFP_KERNEL); + if (!rss_lut) + return; + + /* Populate the LUT with max no. PF queues in round robin fashion */ + for (i = 0; i <= (I40E_VFQF_HLUT_MAX_INDEX * 4); i++) + rss_lut[i] = i % adapter->num_active_queues; + + ret = i40evf_aq_set_rss_key(hw, vsi->id, &rss_key); + if (ret) { + dev_err(&adapter->pdev->dev, + "Cannot set RSS key, err %s aq_err %s\n", + i40evf_stat_str(hw, ret), + i40evf_aq_str(hw, hw->aq.asq_last_status)); + return; + } + + ret = i40evf_aq_set_rss_lut(hw, vsi->id, false, rss_lut, + (I40E_VFQF_HLUT_MAX_INDEX + 1) * 4); + if (ret) + dev_err(&adapter->pdev->dev, + "Cannot set RSS lut, err %s aq_err %s\n", + i40evf_stat_str(hw, ret), + i40evf_aq_str(hw, hw->aq.asq_last_status)); +} + +/** + * i40e_configure_rss_reg - Prepare for RSS if used + * @adapter: board private structure + * @seed: RSS hash seed + **/ +static void i40evf_configure_rss_reg(struct i40evf_adapter *adapter, + const u8 *seed) +{ + struct i40e_hw *hw = &adapter->hw; + u32 *seed_dw = (u32 *)seed; + u32 cqueue = 0; + u32 lut = 0; + int i, j; + + /* Fill out hash function seed */ + for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++) + wr32(hw, I40E_VFQF_HKEY(i), seed_dw[i]); + + /* Populate the LUT with max no. PF queues in round robin fashion */ + for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { + lut = 0; + for (j = 0; j < 4; j++) { + if (cqueue == adapter->num_active_queues) + cqueue = 0; + lut |= ((cqueue) << (8 * j)); + cqueue++; + } + wr32(hw, I40E_VFQF_HLUT(i), lut); + } + i40e_flush(hw); +} + +/** + * i40evf_configure_rss - Prepare for RSS + * @adapter: board private structure + **/ +static void i40evf_configure_rss(struct i40evf_adapter *adapter) +{ + struct i40e_hw *hw = &adapter->hw; + u8 seed[I40EVF_HKEY_ARRAY_SIZE]; + u64 hena; + + netdev_rss_key_fill((void *)seed, I40EVF_HKEY_ARRAY_SIZE); + + /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ + hena = I40E_DEFAULT_RSS_HENA; + wr32(hw, I40E_VFQF_HENA(0), (u32)hena); + wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32)); + + if (RSS_AQ(adapter)) + i40evf_configure_rss_aq(&adapter->vsi, seed); + else + i40evf_configure_rss_reg(adapter, seed); +} + /** * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors * @adapter: board private structure to initialize @@ -1310,16 +1460,16 @@ static void i40evf_watchdog_task(struct work_struct *work) struct i40evf_adapter, watchdog_task); struct i40e_hw *hw = &adapter->hw; - uint32_t rstat_val; + u32 reg_val; if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) goto restart_watchdog; if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { - rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & - I40E_VFGEN_RSTAT_VFR_STATE_MASK; - if ((rstat_val == I40E_VFR_VFACTIVE) || - (rstat_val == I40E_VFR_COMPLETED)) { + reg_val = rd32(hw, I40E_VFGEN_RSTAT) & + I40E_VFGEN_RSTAT_VFR_STATE_MASK; + if ((reg_val == I40E_VFR_VFACTIVE) || + (reg_val == I40E_VFR_COMPLETED)) { /* A chance for redemption! */ dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); adapter->state = __I40EVF_STARTUP; @@ -1344,11 +1494,8 @@ static void i40evf_watchdog_task(struct work_struct *work) goto watchdog_done; /* check for reset */ - rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & - I40E_VFGEN_RSTAT_VFR_STATE_MASK; - if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && - (rstat_val != I40E_VFR_VFACTIVE) && - (rstat_val != I40E_VFR_COMPLETED)) { + reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK; + if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) { adapter->state = __I40EVF_RESETTING; adapter->flags |= I40EVF_FLAG_RESET_PENDING; dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); @@ -1368,6 +1515,10 @@ static void i40evf_watchdog_task(struct work_struct *work) } goto watchdog_done; } + if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) { + i40evf_send_vf_config_msg(adapter); + goto watchdog_done; + } if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) { i40evf_disable_queues(adapter); @@ -1409,6 +1560,16 @@ static void i40evf_watchdog_task(struct work_struct *work) goto watchdog_done; } + if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) { + /* This message goes straight to the firmware, not the + * PF, so we don't have to set current_op as we will + * not get a response through the ARQ. + */ + i40evf_configure_rss(adapter); + adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS; + goto watchdog_done; + } + if (adapter->state == __I40EVF_RUNNING) i40evf_request_stats(adapter); watchdog_done: @@ -1431,47 +1592,8 @@ restart_watchdog: schedule_work(&adapter->adminq_task); } -/** - * i40evf_configure_rss - Prepare for RSS - * @adapter: board private structure - **/ -static void i40evf_configure_rss(struct i40evf_adapter *adapter) -{ - u32 rss_key[I40E_VFQF_HKEY_MAX_INDEX + 1]; - struct i40e_hw *hw = &adapter->hw; - u32 cqueue = 0; - u32 lut = 0; - int i, j; - u64 hena; - - /* Hash type is configured by the PF - we just supply the key */ - netdev_rss_key_fill(rss_key, sizeof(rss_key)); - - /* Fill out hash function seed */ - for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++) - wr32(hw, I40E_VFQF_HKEY(i), rss_key[i]); - - /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ - hena = I40E_DEFAULT_RSS_HENA; - wr32(hw, I40E_VFQF_HENA(0), (u32)hena); - wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32)); - - /* Populate the LUT with max no. of queues in round robin fashion */ - for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { - lut = 0; - for (j = 0; j < 4; j++) { - if (cqueue == adapter->vsi_res->num_queue_pairs) - cqueue = 0; - lut |= ((cqueue) << (8 * j)); - cqueue++; - } - wr32(hw, I40E_VFQF_HLUT(i), lut); - } - i40e_flush(hw); -} - -#define I40EVF_RESET_WAIT_MS 100 -#define I40EVF_RESET_WAIT_COUNT 200 +#define I40EVF_RESET_WAIT_MS 10 +#define I40EVF_RESET_WAIT_COUNT 500 /** * i40evf_reset_task - Call-back task to handle hardware reset * @work: pointer to work_struct @@ -1487,58 +1609,65 @@ static void i40evf_reset_task(struct work_struct *work) reset_task); struct net_device *netdev = adapter->netdev; struct i40e_hw *hw = &adapter->hw; + struct i40evf_vlan_filter *vlf; struct i40evf_mac_filter *f; - uint32_t rstat_val; + u32 reg_val; int i = 0, err; while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) usleep_range(500, 1000); + i40evf_misc_irq_disable(adapter); if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) { - dev_info(&adapter->pdev->dev, "Requesting reset from PF\n"); + adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED; + /* Restart the AQ here. If we have been reset but didn't + * detect it, or if the PF had to reinit, our AQ will be hosed. + */ + i40evf_shutdown_adminq(hw); + i40evf_init_adminq(hw); i40evf_request_reset(adapter); } + adapter->flags |= I40EVF_FLAG_RESET_PENDING; /* poll until we see the reset actually happen */ for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { - rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & - I40E_VFGEN_RSTAT_VFR_STATE_MASK; - if ((rstat_val != I40E_VFR_VFACTIVE) && - (rstat_val != I40E_VFR_COMPLETED)) + reg_val = rd32(hw, I40E_VF_ARQLEN1) & + I40E_VF_ARQLEN1_ARQENABLE_MASK; + if (!reg_val) break; - msleep(I40EVF_RESET_WAIT_MS); + usleep_range(5000, 10000); } if (i == I40EVF_RESET_WAIT_COUNT) { - adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; + dev_info(&adapter->pdev->dev, "Never saw reset\n"); goto continue_reset; /* act like the reset happened */ } /* wait until the reset is complete and the PF is responding to us */ for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { - rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & - I40E_VFGEN_RSTAT_VFR_STATE_MASK; - if ((rstat_val == I40E_VFR_VFACTIVE) || - (rstat_val == I40E_VFR_COMPLETED)) + reg_val = rd32(hw, I40E_VFGEN_RSTAT) & + I40E_VFGEN_RSTAT_VFR_STATE_MASK; + if (reg_val == I40E_VFR_VFACTIVE) break; msleep(I40EVF_RESET_WAIT_MS); } + /* extra wait to make sure minimum wait is met */ + msleep(I40EVF_RESET_WAIT_MS); if (i == I40EVF_RESET_WAIT_COUNT) { - struct i40evf_mac_filter *f, *ftmp; + struct i40evf_mac_filter *ftmp; struct i40evf_vlan_filter *fv, *fvtmp; /* reset never finished */ dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", - rstat_val); + reg_val); adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; if (netif_running(adapter->netdev)) { set_bit(__I40E_DOWN, &adapter->vsi.state); - i40evf_irq_disable(adapter); - i40evf_napi_disable_all(adapter); - netif_tx_disable(netdev); - netif_tx_stop_all_queues(netdev); netif_carrier_off(netdev); + netif_tx_disable(netdev); + i40evf_napi_disable_all(adapter); + i40evf_irq_disable(adapter); i40evf_free_traffic_irqs(adapter); i40evf_free_all_tx_resources(adapter); i40evf_free_all_rx_resources(adapter); @@ -1550,6 +1679,7 @@ static void i40evf_reset_task(struct work_struct *work) list_del(&f->list); kfree(f); } + list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) { list_del(&fv->list); @@ -1564,22 +1694,27 @@ static void i40evf_reset_task(struct work_struct *work) i40evf_shutdown_adminq(hw); adapter->netdev->flags &= ~IFF_UP; clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); + adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; + dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); return; /* Do not attempt to reinit. It's dead, Jim. */ } continue_reset: - adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; - - i40evf_irq_disable(adapter); - if (netif_running(adapter->netdev)) { - i40evf_napi_disable_all(adapter); - netif_tx_disable(netdev); - netif_tx_stop_all_queues(netdev); netif_carrier_off(netdev); + netif_tx_stop_all_queues(netdev); + i40evf_napi_disable_all(adapter); } + i40evf_irq_disable(adapter); adapter->state = __I40EVF_RESETTING; + adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; + + /* free the Tx/Rx rings and descriptors, might be better to just + * re-use them sometime in the future + */ + i40evf_free_all_rx_resources(adapter); + i40evf_free_all_tx_resources(adapter); /* kill and reinit the admin queue */ if (i40evf_shutdown_adminq(hw)) @@ -1590,19 +1725,21 @@ continue_reset: dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", err); - i40evf_map_queues(adapter); + adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG; + adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; /* re-add all MAC filters */ list_for_each_entry(f, &adapter->mac_filter_list, list) { f->add = true; } /* re-add all VLAN filters */ - list_for_each_entry(f, &adapter->vlan_filter_list, list) { - f->add = true; + list_for_each_entry(vlf, &adapter->vlan_filter_list, list) { + vlf->add = true; } - adapter->aq_required = I40EVF_FLAG_AQ_ADD_MAC_FILTER; + adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); + i40evf_misc_irq_enable(adapter); mod_timer(&adapter->watchdog_timer, jiffies + 2); @@ -1624,7 +1761,10 @@ continue_reset: goto reset_err; i40evf_irq_enable(adapter, true); + } else { + adapter->state = __I40EVF_DOWN; } + return; reset_err: dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); @@ -1667,41 +1807,47 @@ static void i40evf_adminq_task(struct work_struct *work) memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE); } while (pending); + if ((adapter->flags & + (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) || + adapter->state == __I40EVF_RESETTING) + goto freedom; + /* check for error indications */ val = rd32(hw, hw->aq.arq.len); oldval = val; - if (val & I40E_VF_ARQLEN_ARQVFE_MASK) { + if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) { dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); - val &= ~I40E_VF_ARQLEN_ARQVFE_MASK; + val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK; } - if (val & I40E_VF_ARQLEN_ARQOVFL_MASK) { + if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) { dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); - val &= ~I40E_VF_ARQLEN_ARQOVFL_MASK; + val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK; } - if (val & I40E_VF_ARQLEN_ARQCRIT_MASK) { + if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) { dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); - val &= ~I40E_VF_ARQLEN_ARQCRIT_MASK; + val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK; } if (oldval != val) wr32(hw, hw->aq.arq.len, val); val = rd32(hw, hw->aq.asq.len); oldval = val; - if (val & I40E_VF_ATQLEN_ATQVFE_MASK) { + if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) { dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); - val &= ~I40E_VF_ATQLEN_ATQVFE_MASK; + val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK; } - if (val & I40E_VF_ATQLEN_ATQOVFL_MASK) { + if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) { dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); - val &= ~I40E_VF_ATQLEN_ATQOVFL_MASK; + val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK; } - if (val & I40E_VF_ATQLEN_ATQCRIT_MASK) { + if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) { dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); - val &= ~I40E_VF_ATQLEN_ATQCRIT_MASK; + val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK; } if (oldval != val) wr32(hw, hw->aq.asq.len, val); +freedom: kfree(event.msg_buf); out: /* re-enable Admin queue interrupt cause */ @@ -1743,8 +1889,7 @@ static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter) if (!err) continue; dev_err(&adapter->pdev->dev, - "%s: Allocation for Tx Queue %u failed\n", - __func__, i); + "Allocation for Tx Queue %u failed\n", i); break; } @@ -1771,8 +1916,7 @@ static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter) if (!err) continue; dev_err(&adapter->pdev->dev, - "%s: Allocation for Rx Queue %u failed\n", - __func__, i); + "Allocation for Rx Queue %u failed\n", i); break; } return err; @@ -1832,6 +1976,7 @@ static int i40evf_open(struct net_device *netdev) if (err) goto err_req_irq; + i40evf_add_filter(adapter, adapter->hw.mac.addr); i40evf_configure(adapter); err = i40evf_up_complete(adapter); @@ -1896,47 +2041,6 @@ static struct net_device_stats *i40evf_get_stats(struct net_device *netdev) return &adapter->net_stats; } -/** - * i40evf_reinit_locked - Software reinit - * @adapter: board private structure - * - * Reinititalizes the ring structures in response to a software configuration - * change. Roughly the same as close followed by open, but skips releasing - * and reallocating the interrupts. - **/ -void i40evf_reinit_locked(struct i40evf_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - int err; - - WARN_ON(in_interrupt()); - - i40evf_down(adapter); - - /* allocate transmit descriptors */ - err = i40evf_setup_all_tx_resources(adapter); - if (err) - goto err_reinit; - - /* allocate receive descriptors */ - err = i40evf_setup_all_rx_resources(adapter); - if (err) - goto err_reinit; - - i40evf_configure(adapter); - - err = i40evf_up_complete(adapter); - if (err) - goto err_reinit; - - i40evf_irq_enable(adapter, true); - return; - -err_reinit: - dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); - i40evf_close(netdev); -} - /** * i40evf_change_mtu - Change the Maximum Transfer Unit * @netdev: network interface device structure @@ -1952,9 +2056,10 @@ static int i40evf_change_mtu(struct net_device *netdev, int new_mtu) if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) return -EINVAL; - /* must set new MTU before calling down or up */ netdev->mtu = new_mtu; - i40evf_reinit_locked(adapter); + adapter->flags |= I40EVF_FLAG_RESET_NEEDED; + schedule_work(&adapter->reset_task); + return 0; } @@ -1970,6 +2075,9 @@ static const struct net_device_ops i40evf_netdev_ops = { .ndo_tx_timeout = i40evf_tx_timeout, .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = i40evf_netpoll, +#endif }; /** @@ -1994,6 +2102,66 @@ static int i40evf_check_reset_complete(struct i40e_hw *hw) return -EBUSY; } +/** + * i40evf_process_config - Process the config information we got from the PF + * @adapter: board private structure + * + * Verify that we have a valid config struct, and set up our netdev features + * and our VSI struct. + **/ +int i40evf_process_config(struct i40evf_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int i; + + /* got VF config message back from PF, now we can parse it */ + for (i = 0; i < adapter->vf_res->num_vsis; i++) { + if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV) + adapter->vsi_res = &adapter->vf_res->vsi_res[i]; + } + if (!adapter->vsi_res) { + dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); + return -ENODEV; + } + + if (adapter->vf_res->vf_offload_flags + & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) { + netdev->vlan_features = netdev->features & + ~(NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_CTAG_FILTER); + netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_CTAG_FILTER; + } + netdev->features |= NETIF_F_HIGHDMA | + NETIF_F_SG | + NETIF_F_IP_CSUM | + NETIF_F_SCTP_CSUM | + NETIF_F_IPV6_CSUM | + NETIF_F_TSO | + NETIF_F_TSO6 | + NETIF_F_RXCSUM | + NETIF_F_GRO; + + /* copy netdev features into list of user selectable features */ + netdev->hw_features |= netdev->features; + netdev->hw_features &= ~NETIF_F_RXCSUM; + + adapter->vsi.id = adapter->vsi_res->vsi_id; + + adapter->vsi.back = adapter; + adapter->vsi.base_vector = 1; + adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; + adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | + ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); + adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | + ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); + adapter->vsi.netdev = adapter->netdev; + adapter->vsi.qs_handle = adapter->vsi_res->qset_handle; + return 0; +} + /** * i40evf_init_task - worker thread to perform delayed initialization * @work: pointer to work_struct containing our data @@ -2012,10 +2180,9 @@ static void i40evf_init_task(struct work_struct *work) struct i40evf_adapter, init_task.work); struct net_device *netdev = adapter->netdev; - struct i40evf_mac_filter *f; struct i40e_hw *hw = &adapter->hw; struct pci_dev *pdev = adapter->pdev; - int i, err, bufsz; + int err, bufsz; switch (adapter->state) { case __I40EVF_STARTUP: @@ -2066,6 +2233,12 @@ static void i40evf_init_task(struct work_struct *work) if (err) { if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) err = i40evf_send_api_ver(adapter); + else + dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", + adapter->pf_version.major, + adapter->pf_version.minor, + I40E_VIRTCHNL_VERSION_MAJOR, + I40E_VIRTCHNL_VERSION_MINOR); goto err; } err = i40evf_send_vf_config_msg(adapter); @@ -2101,60 +2274,26 @@ static void i40evf_init_task(struct work_struct *work) default: goto err_alloc; } - /* got VF config message back from PF, now we can parse it */ - for (i = 0; i < adapter->vf_res->num_vsis; i++) { - if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV) - adapter->vsi_res = &adapter->vf_res->vsi_res[i]; - } - if (!adapter->vsi_res) { - dev_err(&pdev->dev, "No LAN VSI found\n"); + if (i40evf_process_config(adapter)) goto err_alloc; - } + adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED; netdev->netdev_ops = &i40evf_netdev_ops; i40evf_set_ethtool_ops(netdev); netdev->watchdog_timeo = 5 * HZ; - netdev->features |= NETIF_F_HIGHDMA | - NETIF_F_SG | - NETIF_F_IP_CSUM | - NETIF_F_SCTP_CSUM | - NETIF_F_IPV6_CSUM | - NETIF_F_TSO | - NETIF_F_TSO6 | - NETIF_F_RXCSUM | - NETIF_F_GRO; - - if (adapter->vf_res->vf_offload_flags - & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) { - netdev->vlan_features = netdev->features; - netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | - NETIF_F_HW_VLAN_CTAG_RX | - NETIF_F_HW_VLAN_CTAG_FILTER; - } - - /* copy netdev features into list of user selectable features */ - netdev->hw_features |= netdev->features; - netdev->hw_features &= ~NETIF_F_RXCSUM; if (!is_valid_ether_addr(adapter->hw.mac.addr)) { dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", adapter->hw.mac.addr); - random_ether_addr(adapter->hw.mac.addr); + eth_hw_addr_random(netdev); + ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); + } else { + adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF; + ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); + ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); } - ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); - ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); - - f = kzalloc(sizeof(*f), GFP_ATOMIC); - if (!f) - goto err_sw_init; - - ether_addr_copy(f->macaddr, adapter->hw.mac.addr); - f->add = true; - adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; - - list_add(&f->list, &adapter->mac_filter_list); init_timer(&adapter->watchdog_timer); adapter->watchdog_timer.function = &i40evf_watchdog_timer; @@ -2170,24 +2309,17 @@ static void i40evf_init_task(struct work_struct *work) if (err) goto err_sw_init; i40evf_map_rings_to_vectors(adapter); - i40evf_configure_rss(adapter); + if (adapter->vf_res->vf_offload_flags & + I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) + adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE; + if (!RSS_AQ(adapter)) + i40evf_configure_rss(adapter); err = i40evf_request_misc_irq(adapter); if (err) goto err_sw_init; netif_carrier_off(netdev); - adapter->vsi.id = adapter->vsi_res->vsi_id; - adapter->vsi.seid = adapter->vsi_res->vsi_id; /* dummy */ - adapter->vsi.back = adapter; - adapter->vsi.base_vector = 1; - adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; - adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | - ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); - adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | - ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); - adapter->vsi.netdev = adapter->netdev; - if (!adapter->netdev_registered) { err = register_netdev(netdev); if (err) @@ -2206,10 +2338,16 @@ static void i40evf_init_task(struct work_struct *work) adapter->state = __I40EVF_DOWN; set_bit(__I40E_DOWN, &adapter->vsi.state); i40evf_misc_irq_enable(adapter); + + if (RSS_AQ(adapter)) { + adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS; + mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); + } else { + i40evf_configure_rss(adapter); + } return; restart: - schedule_delayed_work(&adapter->init_task, - msecs_to_jiffies(50)); + schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30)); return; err_register: @@ -2222,11 +2360,14 @@ err_alloc: err: /* Things went into the weeds, so try again later */ if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) { - dev_err(&pdev->dev, "Failed to communicate with PF; giving up\n"); + dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n"); adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; - return; /* do not reschedule */ + i40evf_shutdown_adminq(hw); + adapter->state = __I40EVF_STARTUP; + schedule_delayed_work(&adapter->init_task, HZ * 5); + return; } - schedule_delayed_work(&adapter->init_task, HZ * 3); + schedule_delayed_work(&adapter->init_task, HZ); } /** @@ -2315,7 +2456,7 @@ static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) hw = &adapter->hw; hw->back = adapter; - adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; + adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; adapter->state = __I40EVF_STARTUP; /* Call save state here because it relies on the adapter struct. */ @@ -2335,6 +2476,12 @@ static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) hw->bus.device = PCI_SLOT(pdev->devfn); hw->bus.func = PCI_FUNC(pdev->devfn); + /* set up the locks for the AQ, do this only once in probe + * and destroy them only once in remove + */ + mutex_init(&hw->aq.asq_mutex); + mutex_init(&hw->aq.arq_mutex); + INIT_LIST_HEAD(&adapter->mac_filter_list); INIT_LIST_HEAD(&adapter->vlan_filter_list); @@ -2342,7 +2489,8 @@ static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) INIT_WORK(&adapter->adminq_task, i40evf_adminq_task); INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task); INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task); - schedule_delayed_work(&adapter->init_task, 10); + schedule_delayed_work(&adapter->init_task, + msecs_to_jiffies(5 * (pdev->devfn & 0x07))); return 0; @@ -2418,6 +2566,7 @@ static int i40evf_resume(struct pci_dev *pdev) rtnl_lock(); err = i40evf_set_interrupt_capability(adapter); if (err) { + rtnl_unlock(); dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); return err; } @@ -2486,6 +2635,10 @@ static void i40evf_remove(struct pci_dev *pdev) if (hw->aq.asq.count) i40evf_shutdown_adminq(hw); + /* destroy the locks only once, here */ + mutex_destroy(&hw->aq.arq_mutex); + mutex_destroy(&hw->aq.asq_mutex); + iounmap(hw->hw_addr); pci_release_regions(pdev); -- cgit 1.2.3-korg