blob: 847d67e32a5401669b88346e29a038100414c730 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */
#include "iavf.h"
#include "iavf_prototype.h"
#include "iavf_client.h"
/* All iavf tracepoints are defined by the include below, which must
* be included exactly once across the whole kernel with
* CREATE_TRACE_POINTS defined
*/
#define CREATE_TRACE_POINTS
#include "iavf_trace.h"
static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter);
static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter);
static int iavf_close(struct net_device *netdev);
static void iavf_init_get_resources(struct iavf_adapter *adapter);
static int iavf_check_reset_complete(struct iavf_hw *hw);
char iavf_driver_name[] = "iavf";
static const char iavf_driver_string[] =
"Intel(R) Ethernet Adaptive Virtual Function Network Driver";
static const char iavf_copyright[] =
"Copyright (c) 2013 - 2018 Intel Corporation.";
/* iavf_pci_tbl - PCI Device ID Table
*
* Wildcard entries (PCI_ANY_ID) should come last
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id iavf_pci_tbl[] = {
{PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF), 0},
{PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF_HV), 0},
{PCI_VDEVICE(INTEL, IAVF_DEV_ID_X722_VF), 0},
{PCI_VDEVICE(INTEL, IAVF_DEV_ID_ADAPTIVE_VF), 0},
/* required last entry */
{0, }
};
MODULE_DEVICE_TABLE(pci, iavf_pci_tbl);
MODULE_ALIAS("i40evf");
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver");
MODULE_LICENSE("GPL v2");
static const struct net_device_ops iavf_netdev_ops;
struct workqueue_struct *iavf_wq;
/**
* iavf_pdev_to_adapter - go from pci_dev to adapter
* @pdev: pci_dev pointer
*/
static struct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev)
{
return netdev_priv(pci_get_drvdata(pdev));
}
/**
* iavf_allocate_dma_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
* @alignment: what to align the allocation to
**/
enum iavf_status iavf_allocate_dma_mem_d(struct iavf_hw *hw,
struct iavf_dma_mem *mem,
u64 size, u32 alignment)
{
struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;
if (!mem)
return IAVF_ERR_PARAM;
mem->size = ALIGN(size, alignment);
mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
(dma_addr_t *)&mem->pa, GFP_KERNEL);
if (mem->va)
return 0;
else
return IAVF_ERR_NO_MEMORY;
}
/**
* iavf_free_dma_mem_d - OS specific memory free for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
**/
enum iavf_status iavf_free_dma_mem_d(struct iavf_hw *hw,
struct iavf_dma_mem *mem)
{
struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;
if (!mem || !mem->va)
return IAVF_ERR_PARAM;
dma_free_coherent(&adapter->pdev->dev, mem->size,
mem->va, (dma_addr_t)mem->pa);
return 0;
}
/**
* iavf_allocate_virt_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
**/
enum iavf_status iavf_allocate_virt_mem_d(struct iavf_hw *hw,
struct iavf_virt_mem *mem, u32 size)
{
if (!mem)
return IAVF_ERR_PARAM;
mem->size = size;
mem->va = kzalloc(size, GFP_KERNEL);
if (mem->va)
return 0;
else
return IAVF_ERR_NO_MEMORY;
}
/**
* iavf_free_virt_mem_d - OS specific memory free for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
**/
enum iavf_status iavf_free_virt_mem_d(struct iavf_hw *hw,
struct iavf_virt_mem *mem)
{
if (!mem)
return IAVF_ERR_PARAM;
/* it's ok to kfree a NULL pointer */
kfree(mem->va);
return 0;
}
/**
* iavf_lock_timeout - try to lock mutex but give up after timeout
* @lock: mutex that should be locked
* @msecs: timeout in msecs
*
* Returns 0 on success, negative on failure
**/
static int iavf_lock_timeout(struct mutex *lock, unsigned int msecs)
{
unsigned int wait, delay = 10;
for (wait = 0; wait < msecs; wait += delay) {
if (mutex_trylock(lock))
return 0;
msleep(delay);
}
return -1;
}
/**
* iavf_schedule_reset - Set the flags and schedule a reset event
* @adapter: board private structure
**/
void iavf_schedule_reset(struct iavf_adapter *adapter)
{
if (!(adapter->flags &
(IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) {
adapter->flags |= IAVF_FLAG_RESET_NEEDED;
queue_work(iavf_wq, &adapter->reset_task);
}
}
/**
* iavf_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
* @txqueue: queue number that is timing out
**/
static void iavf_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
adapter->tx_timeout_count++;
iavf_schedule_reset(adapter);
}
/**
* iavf_misc_irq_disable - Mask off interrupt generation on the NIC
* @adapter: board private structure
**/
static void iavf_misc_irq_disable(struct iavf_adapter *adapter)
{
struct iavf_hw *hw = &adapter->hw;
if (!adapter->msix_entries)
return;
wr32(hw, IAVF_VFINT_DYN_CTL01, 0);
iavf_flush(hw);
synchronize_irq(adapter->msix_entries[0].vector);
}
/**
* iavf_misc_irq_enable - Enable default interrupt generation settings
* @adapter: board private structure
**/
static void iavf_misc_irq_enable(struct iavf_adapter *adapter)
{
struct iavf_hw *hw = &adapter->hw;
wr32(hw, IAVF_VFINT_DYN_CTL01, IAVF_VFINT_DYN_CTL01_INTENA_MASK |
IAVF_VFINT_DYN_CTL01_ITR_INDX_MASK);
wr32(hw, IAVF_VFINT_ICR0_ENA1, IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK);
iavf_flush(hw);
}
/**
* iavf_irq_disable - Mask off interrupt generation on the NIC
* @adapter: board private structure
**/
static void iavf_irq_disable(struct iavf_adapter *adapter)
{
int i;
struct iavf_hw *hw = &adapter->hw;
if (!adapter->msix_entries)
return;
for (i = 1; i < adapter->num_msix_vectors; i++) {
wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 0);
synchronize_irq(adapter->msix_entries[i].vector);
}
iavf_flush(hw);
}
/**
* iavf_irq_enable_queues - Enable interrupt for specified queues
* @adapter: board private structure
* @mask: bitmap of queues to enable
**/
void iavf_irq_enable_queues(struct iavf_adapter *adapter, u32 mask)
{
struct iavf_hw *hw = &adapter->hw;
int i;
for (i = 1; i < adapter->num_msix_vectors; i++) {
if (mask & BIT(i - 1)) {
wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1),
IAVF_VFINT_DYN_CTLN1_INTENA_MASK |
IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK);
}
}
}
/**
* iavf_irq_enable - Enable default interrupt generation settings
* @adapter: board private structure
* @flush: boolean value whether to run rd32()
**/
void iavf_irq_enable(struct iavf_adapter *adapter, bool flush)
{
struct iavf_hw *hw = &adapter->hw;
iavf_misc_irq_enable(adapter);
iavf_irq_enable_queues(adapter, ~0);
if (flush)
iavf_flush(hw);
}
/**
* iavf_msix_aq - Interrupt handler for vector 0
* @irq: interrupt number
* @data: pointer to netdev
**/
static irqreturn_t iavf_msix_aq(int irq, void *data)
{
struct net_device *netdev = data;
struct iavf_adapter *adapter = netdev_priv(netdev);
struct iavf_hw *hw = &adapter->hw;
/* handle non-queue interrupts, these reads clear the registers */
rd32(hw, IAVF_VFINT_ICR01);
rd32(hw, IAVF_VFINT_ICR0_ENA1);
/* schedule work on the private workqueue */
queue_work(iavf_wq, &adapter->adminq_task);
return IRQ_HANDLED;
}
/**
* iavf_msix_clean_rings - MSIX mode Interrupt Handler
* @irq: interrupt number
* @data: pointer to a q_vector
**/
static irqreturn_t iavf_msix_clean_rings(int irq, void *data)
{
struct iavf_q_vector *q_vector = data;
if (!q_vector->tx.ring && !q_vector->rx.ring)
return IRQ_HANDLED;
napi_schedule_irqoff(&q_vector->napi);
return IRQ_HANDLED;
}
/**
* iavf_map_vector_to_rxq - associate irqs with rx queues
* @adapter: board private structure
* @v_idx: interrupt number
* @r_idx: queue number
**/
static void
iavf_map_vector_to_rxq(struct iavf_adapter *adapter, int v_idx, int r_idx)
{
struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx];
struct iavf_ring *rx_ring = &adapter->rx_rings[r_idx];
struct iavf_hw *hw = &adapter->hw;
rx_ring->q_vector = q_vector;
rx_ring->next = q_vector->rx.ring;
rx_ring->vsi = &adapter->vsi;
q_vector->rx.ring = rx_ring;
q_vector->rx.count++;
q_vector->rx.next_update = jiffies + 1;
q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
q_vector->ring_mask |= BIT(r_idx);
wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR, q_vector->reg_idx),
q_vector->rx.current_itr >> 1);
q_vector->rx.current_itr = q_vector->rx.target_itr;
}
/**
* iavf_map_vector_to_txq - associate irqs with tx queues
* @adapter: board private structure
* @v_idx: interrupt number
* @t_idx: queue number
**/
static void
iavf_map_vector_to_txq(struct iavf_adapter *adapter, int v_idx, int t_idx)
{
struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx];
struct iavf_ring *tx_ring = &adapter->tx_rings[t_idx];
struct iavf_hw *hw = &adapter->hw;
tx_ring->q_vector = q_vector;
tx_ring->next = q_vector->tx.ring;
tx_ring->vsi = &adapter->vsi;
q_vector->tx.ring = tx_ring;
q_vector->tx.count++;
q_vector->tx.next_update = jiffies + 1;
q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
q_vector->num_ringpairs++;
wr32(hw, IAVF_VFINT_ITRN1(IAVF_TX_ITR, q_vector->reg_idx),
q_vector->tx.target_itr >> 1);
q_vector->tx.current_itr = q_vector->tx.target_itr;
}
/**
* iavf_map_rings_to_vectors - Maps descriptor rings to vectors
* @adapter: board private structure to initialize
*
* This function maps descriptor rings to the queue-specific vectors
* we were allotted through the MSI-X enabling code. Ideally, we'd have
* one vector per ring/queue, but on a constrained vector budget, we
* group the rings as "efficiently" as possible. You would add new
* mapping configurations in here.
**/
static void iavf_map_rings_to_vectors(struct iavf_adapter *adapter)
{
int rings_remaining = adapter->num_active_queues;
int ridx = 0, vidx = 0;
int q_vectors;
q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (; ridx < rings_remaining; ridx++) {
iavf_map_vector_to_rxq(adapter, vidx, ridx);
iavf_map_vector_to_txq(adapter, vidx, ridx);
/* In the case where we have more queues than vectors, continue
* round-robin on vectors until all queues are mapped.
*/
if (++vidx >= q_vectors)
vidx = 0;
}
adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS;
}
/**
* iavf_irq_affinity_notify - Callback for affinity changes
* @notify: context as to what irq was changed
* @mask: the new affinity mask
*
* This is a callback function used by the irq_set_affinity_notifier function
* so that we may register to receive changes to the irq affinity masks.
**/
static void iavf_irq_affinity_notify(struct irq_affinity_notify *notify,
const cpumask_t *mask)
{
struct iavf_q_vector *q_vector =
container_of(notify, struct iavf_q_vector, affinity_notify);
cpumask_copy(&q_vector->affinity_mask, mask);
}
/**
* iavf_irq_affinity_release - Callback for affinity notifier release
* @ref: internal core kernel usage
*
* This is a callback function used by the irq_set_affinity_notifier function
* to inform the current notification subscriber that they will no longer
* receive notifications.
**/
static void iavf_irq_affinity_release(struct kref *ref) {}
/**
* iavf_request_traffic_irqs - Initialize MSI-X interrupts
* @adapter: board private structure
* @basename: device basename
*
* Allocates MSI-X vectors for tx and rx handling, and requests
* interrupts from the kernel.
**/
static int
iavf_request_traffic_irqs(struct iavf_adapter *adapter, char *basename)
{
unsigned int vector, q_vectors;
unsigned int rx_int_idx = 0, tx_int_idx = 0;
int irq_num, err;
int cpu;
iavf_irq_disable(adapter);
/* Decrement for Other and TCP Timer vectors */
q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (vector = 0; vector < q_vectors; vector++) {
struct iavf_q_vector *q_vector = &adapter->q_vectors[vector];
irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name),
"iavf-%s-TxRx-%d", basename, rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name),
"iavf-%s-rx-%d", basename, rx_int_idx++);
} else if (q_vector->tx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name),
"iavf-%s-tx-%d", basename, tx_int_idx++);
} else {
/* skip this unused q_vector */
continue;
}
err = request_irq(irq_num,
iavf_msix_clean_rings,
0,
q_vector->name,
q_vector);
if (err) {
dev_info(&adapter->pdev->dev,
"Request_irq failed, error: %d\n", err);
goto free_queue_irqs;
}
/* register for affinity change notifications */
q_vector->affinity_notify.notify = iavf_irq_affinity_notify;
q_vector->affinity_notify.release =
iavf_irq_affinity_release;
irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
/* Spread the IRQ affinity hints across online CPUs. Note that
* get_cpu_mask returns a mask with a permanent lifetime so
* it's safe to use as a hint for irq_set_affinity_hint.
*/
cpu = cpumask_local_spread(q_vector->v_idx, -1);
irq_set_affinity_hint(irq_num, get_cpu_mask(cpu));
}
return 0;
free_queue_irqs:
while (vector) {
vector--;
irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
irq_set_affinity_notifier(irq_num, NULL);
irq_set_affinity_hint(irq_num, NULL);
free_irq(irq_num, &adapter->q_vectors[vector]);
}
return err;
}
/**
* iavf_request_misc_irq - Initialize MSI-X interrupts
* @adapter: board private structure
*
* Allocates MSI-X vector 0 and requests interrupts from the kernel. This
* vector is only for the admin queue, and stays active even when the netdev
* is closed.
**/
static int iavf_request_misc_irq(struct iavf_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
int err;
snprintf(adapter->misc_vector_name,
sizeof(adapter->misc_vector_name) - 1, "iavf-%s:mbx",
dev_name(&adapter->pdev->dev));
err = request_irq(adapter->msix_entries[0].vector,
&iavf_msix_aq, 0,
adapter->misc_vector_name, netdev);
if (err) {
dev_err(&adapter->pdev->dev,
"request_irq for %s failed: %d\n",
adapter->misc_vector_name, err);
free_irq(adapter->msix_entries[0].vector, netdev);
}
return err;
}
/**
* iavf_free_traffic_irqs - Free MSI-X interrupts
* @adapter: board private structure
*
* Frees all MSI-X vectors other than 0.
**/
static void iavf_free_traffic_irqs(struct iavf_adapter *adapter)
{
int vector, irq_num, q_vectors;
if (!adapter->msix_entries)
return;
q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (vector = 0; vector < q_vectors; vector++) {
irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
irq_set_affinity_notifier(irq_num, NULL);
irq_set_affinity_hint(irq_num, NULL);
free_irq(irq_num, &adapter->q_vectors[vector]);
}
}
/**
* iavf_free_misc_irq - Free MSI-X miscellaneous vector
* @adapter: board private structure
*
* Frees MSI-X vector 0.
**/
static void iavf_free_misc_irq(struct iavf_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
if (!adapter->msix_entries)
return;
free_irq(adapter->msix_entries[0].vector, netdev);
}
/**
* iavf_configure_tx - Configure Transmit Unit after Reset
* @adapter: board private structure
*
* Configure the Tx unit of the MAC after a reset.
**/
static void iavf_configure_tx(struct iavf_adapter *adapter)
{
struct iavf_hw *hw = &adapter->hw;
int i;
for (i = 0; i < adapter->num_active_queues; i++)
adapter->tx_rings[i].tail = hw->hw_addr + IAVF_QTX_TAIL1(i);
}
/**
* iavf_configure_rx - Configure Receive Unit after Reset
* @adapter: board private structure
*
* Configure the Rx unit of the MAC after a reset.
**/
static void iavf_configure_rx(struct iavf_adapter *adapter)
{
unsigned int rx_buf_len = IAVF_RXBUFFER_2048;
struct iavf_hw *hw = &adapter->hw;
int i;
/* Legacy Rx will always default to a 2048 buffer size. */
#if (PAGE_SIZE < 8192)
if (!(adapter->flags & IAVF_FLAG_LEGACY_RX)) {
struct net_device *netdev = adapter->netdev;
/* For jumbo frames on systems with 4K pages we have to use
* an order 1 page, so we might as well increase the size
* of our Rx buffer to make better use of the available space
*/
rx_buf_len = IAVF_RXBUFFER_3072;
/* We use a 1536 buffer size for configurations with
* standard Ethernet mtu. On x86 this gives us enough room
* for shared info and 192 bytes of padding.
*/
if (!IAVF_2K_TOO_SMALL_WITH_PADDING &&
(netdev->mtu <= ETH_DATA_LEN))
rx_buf_len = IAVF_RXBUFFER_1536 - NET_IP_ALIGN;
}
#endif
for (i = 0; i < adapter->num_active_queues; i++) {
adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i);
adapter->rx_rings[i].rx_buf_len = rx_buf_len;
if (adapter->flags & IAVF_FLAG_LEGACY_RX)
clear_ring_build_skb_enabled(&adapter->rx_rings[i]);
else
set_ring_build_skb_enabled(&adapter->rx_rings[i]);
}
}
/**
* iavf_find_vlan - Search filter list for specific vlan filter
* @adapter: board private structure
* @vlan: vlan tag
*
* Returns ptr to the filter object or NULL. Must be called while holding the
* mac_vlan_list_lock.
**/
static struct
iavf_vlan_filter *iavf_find_vlan(struct iavf_adapter *adapter, u16 vlan)
{
struct iavf_vlan_filter *f;
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (vlan == f->vlan)
return f;
}
return NULL;
}
/**
* iavf_add_vlan - Add a vlan filter to the list
* @adapter: board private structure
* @vlan: VLAN tag
*
* Returns ptr to the filter object or NULL when no memory available.
**/
static struct
iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter, u16 vlan)
{
struct iavf_vlan_filter *f = NULL;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_vlan(adapter, vlan);
if (!f) {
f = kzalloc(sizeof(*f), GFP_ATOMIC);
if (!f)
goto clearout;
f->vlan = vlan;
list_add_tail(&f->list, &adapter->vlan_filter_list);
f->add = true;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
}
clearout:
spin_unlock_bh(&adapter->mac_vlan_list_lock);
return f;
}
/**
* iavf_del_vlan - Remove a vlan filter from the list
* @adapter: board private structure
* @vlan: VLAN tag
**/
static void iavf_del_vlan(struct iavf_adapter *adapter, u16 vlan)
{
struct iavf_vlan_filter *f;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_vlan(adapter, vlan);
if (f) {
f->remove = true;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
}
/**
* iavf_vlan_rx_add_vid - Add a VLAN filter to a device
* @netdev: network device struct
* @proto: unused protocol data
* @vid: VLAN tag
**/
static int iavf_vlan_rx_add_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
if (!VLAN_ALLOWED(adapter))
return -EIO;
if (iavf_add_vlan(adapter, vid) == NULL)
return -ENOMEM;
return 0;
}
/**
* iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device
* @netdev: network device struct
* @proto: unused protocol data
* @vid: VLAN tag
**/
static int iavf_vlan_rx_kill_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
if (VLAN_ALLOWED(adapter)) {
iavf_del_vlan(adapter, vid);
return 0;
}
return -EIO;
}
/**
* iavf_find_filter - Search filter list for specific mac filter
* @adapter: board private structure
* @macaddr: the MAC address
*
* Returns ptr to the filter object or NULL. Must be called while holding the
* mac_vlan_list_lock.
**/
static struct
iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter,
const u8 *macaddr)
{
struct iavf_mac_filter *f;
if (!macaddr)
return NULL;
list_for_each_entry(f, &adapter->mac_filter_list, list) {
if (ether_addr_equal(macaddr, f->macaddr))
return f;
}
return NULL;
}
/**
* iavf_add_filter - Add a mac filter to the filter list
* @adapter: board private structure
* @macaddr: the MAC address
*
* Returns ptr to the filter object or NULL when no memory available.
**/
struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter,
const u8 *macaddr)
{
struct iavf_mac_filter *f;
if (!macaddr)
return NULL;
f = iavf_find_filter(adapter, macaddr);
if (!f) {
f = kzalloc(sizeof(*f), GFP_ATOMIC);
if (!f)
return f;
ether_addr_copy(f->macaddr, macaddr);
list_add_tail(&f->list, &adapter->mac_filter_list);
f->add = true;
f->is_new_mac = true;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
} else {
f->remove = false;
}
return f;
}
/**
* iavf_set_mac - NDO callback to set port mac address
* @netdev: network interface device structure
* @p: pointer to an address structure
*
* Returns 0 on success, negative on failure
**/
static int iavf_set_mac(struct net_device *netdev, void *p)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
struct iavf_hw *hw = &adapter->hw;
struct iavf_mac_filter *f;
struct sockaddr *addr = p;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
return 0;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_filter(adapter, hw->mac.addr);
if (f) {
f->remove = true;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
}
f = iavf_add_filter(adapter, addr->sa_data);
spin_unlock_bh(&adapter->mac_vlan_list_lock);
if (f) {
ether_addr_copy(hw->mac.addr, addr->sa_data);
}
return (f == NULL) ? -ENOMEM : 0;
}
/**
* iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address
* @netdev: the netdevice
* @addr: address to add
*
* Called by __dev_(mc|uc)_sync when an address needs to be added. We call
* __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
*/
static int iavf_addr_sync(struct net_device *netdev, const u8 *addr)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
if (iavf_add_filter(adapter, addr))
return 0;
else
return -ENOMEM;
}
/**
* iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
* @netdev: the netdevice
* @addr: address to add
*
* Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
* __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
*/
static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
struct iavf_mac_filter *f;
/* Under some circumstances, we might receive a request to delete
* our own device address from our uc list. Because we store the
* device address in the VSI's MAC/VLAN filter list, we need to ignore
* such requests and not delete our device address from this list.
*/
if (ether_addr_equal(addr, netdev->dev_addr))
return 0;
f = iavf_find_filter(adapter, addr);
if (f) {
f->remove = true;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
}
return 0;
}
/**
* iavf_set_rx_mode - NDO callback to set the netdev filters
* @netdev: network interface device structure
**/
static void iavf_set_rx_mode(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
spin_lock_bh(&adapter->mac_vlan_list_lock);
__dev_uc_sync(netdev, iavf_addr_sync, iavf_addr_unsync);
__dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync);
spin_unlock_bh(&adapter->mac_vlan_list_lock);
if (netdev->flags & IFF_PROMISC &&
!(adapter->flags & IAVF_FLAG_PROMISC_ON))
adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_PROMISC;
else if (!(netdev->flags & IFF_PROMISC) &&
adapter->flags & IAVF_FLAG_PROMISC_ON)
adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_PROMISC;
if (netdev->flags & IFF_ALLMULTI &&
!(adapter->flags & IAVF_FLAG_ALLMULTI_ON))
adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_ALLMULTI;
else if (!(netdev->flags & IFF_ALLMULTI) &&
adapter->flags & IAVF_FLAG_ALLMULTI_ON)
adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_ALLMULTI;
}
/**
* iavf_napi_enable_all - enable NAPI on all queue vectors
* @adapter: board private structure
**/
static void iavf_napi_enable_all(struct iavf_adapter *adapter)
{
int q_idx;
struct iavf_q_vector *q_vector;
int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (q_idx = 0; q_idx < q_vectors; q_idx++) {
struct napi_struct *napi;
q_vector = &adapter->q_vectors[q_idx];
napi = &q_vector->napi;
napi_enable(napi);
}
}
/**
* iavf_napi_disable_all - disable NAPI on all queue vectors
* @adapter: board private structure
**/
static void iavf_napi_disable_all(struct iavf_adapter *adapter)
{
int q_idx;
struct iavf_q_vector *q_vector;
int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
for (q_idx = 0; q_idx < q_vectors; q_idx++) {
q_vector = &adapter->q_vectors[q_idx];
napi_disable(&q_vector->napi);
}
}
/**
* iavf_configure - set up transmit and receive data structures
* @adapter: board private structure
**/
static void iavf_configure(struct iavf_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
int i;
iavf_set_rx_mode(netdev);
iavf_configure_tx(adapter);
iavf_configure_rx(adapter);
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES;
for (i = 0; i < adapter->num_active_queues; i++) {
struct iavf_ring *ring = &adapter->rx_rings[i];
iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring));
}
}
/**
* iavf_up_complete - Finish the last steps of bringing up a connection
* @adapter: board private structure
*
* Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock.
**/
static void iavf_up_complete(struct iavf_adapter *adapter)
{
iavf_change_state(adapter, __IAVF_RUNNING);
clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
iavf_napi_enable_all(adapter);
adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES;
if (CLIENT_ENABLED(adapter))
adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_OPEN;
mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
}
/**
* iavf_down - Shutdown the connection processing
* @adapter: board private structure
*
* Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock.
**/
void iavf_down(struct iavf_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct iavf_vlan_filter *vlf;
struct iavf_cloud_filter *cf;
struct iavf_fdir_fltr *fdir;
struct iavf_mac_filter *f;
struct iavf_adv_rss *rss;
if (adapter->state <= __IAVF_DOWN_PENDING)
return;
netif_carrier_off(netdev);
netif_tx_disable(netdev);
adapter->link_up = false;
iavf_napi_disable_all(adapter);
iavf_irq_disable(adapter);
spin_lock_bh(&adapter->mac_vlan_list_lock);
/* clear the sync flag on all filters */
__dev_uc_unsync(adapter->netdev, NULL);
__dev_mc_unsync(adapter->netdev, NULL);
/* remove all MAC filters */
list_for_each_entry(f, &adapter->mac_filter_list, list) {
f->remove = true;
}
/* remove all VLAN filters */
list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
vlf->remove = true;
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
/* remove all cloud filters */
spin_lock_bh(&adapter->cloud_filter_list_lock);
list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
cf->del = true;
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
/* remove all Flow Director filters */
spin_lock_bh(&adapter->fdir_fltr_lock);
list_for_each_entry(fdir, &adapter->fdir_list_head, list) {
fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST;
}
spin_unlock_bh(&adapter->fdir_fltr_lock);
/* remove all advance RSS configuration */
spin_lock_bh(&adapter->adv_rss_lock);
list_for_each_entry(rss, &adapter->adv_rss_list_head, list)
rss->state = IAVF_ADV_RSS_DEL_REQUEST;
spin_unlock_bh(&adapter->adv_rss_lock);
if (!(adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) &&
adapter->state != __IAVF_RESETTING) {
/* cancel any current operation */
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
/* Schedule operations to close down the HW. Don't wait
* here for this to complete. The watchdog is still running
* and it will take care of this.
*/
adapter->aq_required = IAVF_FLAG_AQ_DEL_MAC_FILTER;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG;
adapter->aq_required |= IAVF_FLAG_AQ_DISABLE_QUEUES;
}
mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
}
/**
* iavf_acquire_msix_vectors - Setup the MSIX capability
* @adapter: board private structure
* @vectors: number of vectors to request
*
* Work with the OS to set up the MSIX vectors needed.
*
* Returns 0 on success, negative on failure
**/
static int
iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors)
{
int err, vector_threshold;
/* We'll want at least 3 (vector_threshold):
* 0) Other (Admin Queue and link, mostly)
* 1) TxQ[0] Cleanup
* 2) RxQ[0] Cleanup
*/
vector_threshold = MIN_MSIX_COUNT;
/* The more we get, the more we will assign to Tx/Rx Cleanup
* for the separate queues...where Rx Cleanup >= Tx Cleanup.
* Right now, we simply care about how many we'll get; we'll
* set them up later while requesting irq's.
*/
err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
vector_threshold, vectors);
if (err < 0) {
dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
kfree(adapter->msix_entries);
adapter->msix_entries = NULL;
return err;
}
/* Adjust for only the vectors we'll use, which is minimum
* of max_msix_q_vectors + NONQ_VECS, or the number of
* vectors we were allocated.
*/
adapter->num_msix_vectors = err;
return 0;
}
/**
* iavf_free_queues - Free memory for all rings
* @adapter: board private structure to initialize
*
* Free all of the memory associated with queue pairs.
**/
static void iavf_free_queues(struct iavf_adapter *adapter)
{
if (!adapter->vsi_res)
return;
adapter->num_active_queues = 0;
kfree(adapter->tx_rings);
adapter->tx_rings = NULL;
kfree(adapter->rx_rings);
adapter->rx_rings = NULL;
}
/**
* iavf_alloc_queues - Allocate memory for all rings
* @adapter: board private structure to initialize
*
* We allocate one ring per queue at run-time since we don't know the
* number of queues at compile-time. The polling_netdev array is
* intended for Multiqueue, but should work fine with a single queue.
**/
static int iavf_alloc_queues(struct iavf_adapter *adapter)
{
int i, num_active_queues;
/* If we're in reset reallocating queues we don't actually know yet for
* certain the PF gave us the number of queues we asked for but we'll
* assume it did. Once basic reset is finished we'll confirm once we
* start negotiating config with PF.
*/
if (adapter->num_req_queues)
num_active_queues = adapter->num_req_queues;
else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
adapter->num_tc)
num_active_queues = adapter->ch_config.total_qps;
else
num_active_queues = min_t(int,
adapter->vsi_res->num_queue_pairs,
(int)(num_online_cpus()));
adapter->tx_rings = kcalloc(num_active_queues,
sizeof(struct iavf_ring), GFP_KERNEL);
if (!adapter->tx_rings)
goto err_out;
adapter->rx_rings = kcalloc(num_active_queues,
sizeof(struct iavf_ring), GFP_KERNEL);
if (!adapter->rx_rings)
goto err_out;
for (i = 0; i < num_active_queues; i++) {
struct iavf_ring *tx_ring;
struct iavf_ring *rx_ring;
tx_ring = &adapter->tx_rings[i];
tx_ring->queue_index = i;
tx_ring->netdev = adapter->netdev;
tx_ring->dev = &adapter->pdev->dev;
tx_ring->count = adapter->tx_desc_count;
tx_ring->itr_setting = IAVF_ITR_TX_DEF;
if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE)
tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR;
rx_ring = &adapter->rx_rings[i];
rx_ring->queue_index = i;
rx_ring->netdev = adapter->netdev;
rx_ring->dev = &adapter->pdev->dev;
rx_ring->count = adapter->rx_desc_count;
rx_ring->itr_setting = IAVF_ITR_RX_DEF;
}
adapter->num_active_queues = num_active_queues;
return 0;
err_out:
iavf_free_queues(adapter);
return -ENOMEM;
}
/**
* iavf_set_interrupt_capability - set MSI-X or FAIL if not supported
* @adapter: board private structure to initialize
*
* Attempt to configure the interrupts using the best available
* capabilities of the hardware and the kernel.
**/
static int iavf_set_interrupt_capability(struct iavf_adapter *adapter)
{
int vector, v_budget;
int pairs = 0;
int err = 0;
if (!adapter->vsi_res) {
err = -EIO;
goto out;
}
pairs = adapter->num_active_queues;
/* It's easy to be greedy for MSI-X vectors, but it really doesn't do
* us much good if we have more vectors than CPUs. However, we already
* limit the total number of queues by the number of CPUs so we do not
* need any further limiting here.
*/
v_budget = min_t(int, pairs + NONQ_VECS,
(int)adapter->vf_res->max_vectors);
adapter->msix_entries = kcalloc(v_budget,
sizeof(struct msix_entry), GFP_KERNEL);
if (!adapter->msix_entries) {
err = -ENOMEM;
goto out;
}
for (vector = 0; vector < v_budget; vector++)
adapter->msix_entries[vector].entry = vector;
err = iavf_acquire_msix_vectors(adapter, v_budget);
out:
netif_set_real_num_rx_queues(adapter->netdev, pairs);
netif_set_real_num_tx_queues(adapter->netdev, pairs);
return err;
}
/**
* iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands
* @adapter: board private structure
*
* Return 0 on success, negative on failure
**/
static int iavf_config_rss_aq(struct iavf_adapter *adapter)
{
struct iavf_aqc_get_set_rss_key_data *rss_key =
(struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key;
struct iavf_hw *hw = &adapter->hw;
int ret = 0;
if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n",
adapter->current_op);
return -EBUSY;
}
ret = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key);
if (ret) {
dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n",
iavf_stat_str(hw, ret),
iavf_aq_str(hw, hw->aq.asq_last_status));
return ret;
}
ret = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false,
adapter->rss_lut, adapter->rss_lut_size);
if (ret) {
dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n",
iavf_stat_str(hw, ret),
iavf_aq_str(hw, hw->aq.asq_last_status));
}
return ret;
}
/**
* iavf_config_rss_reg - Configure RSS keys and lut by writing registers
* @adapter: board private structure
*
* Returns 0 on success, negative on failure
**/
static int iavf_config_rss_reg(struct iavf_adapter *adapter)
{
struct iavf_hw *hw = &adapter->hw;
u32 *dw;
u16 i;
dw = (u32 *)adapter->rss_key;
for (i = 0; i <= adapter->rss_key_size / 4; i++)
wr32(hw, IAVF_VFQF_HKEY(i), dw[i]);
dw = (u32 *)adapter->rss_lut;
for (i = 0; i <= adapter->rss_lut_size / 4; i++)
wr32(hw, IAVF_VFQF_HLUT(i), dw[i]);
iavf_flush(hw);
return 0;
}
/**
* iavf_config_rss - Configure RSS keys and lut
* @adapter: board private structure
*
* Returns 0 on success, negative on failure
**/
int iavf_config_rss(struct iavf_adapter *adapter)
{
if (RSS_PF(adapter)) {
adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT |
IAVF_FLAG_AQ_SET_RSS_KEY;
return 0;
} else if (RSS_AQ(adapter)) {
return iavf_config_rss_aq(adapter);
} else {
return iavf_config_rss_reg(adapter);
}
}
/**
* iavf_fill_rss_lut - Fill the lut with default values
* @adapter: board private structure
**/
static void iavf_fill_rss_lut(struct iavf_adapter *adapter)
{
u16 i;
for (i = 0; i < adapter->rss_lut_size; i++)
adapter->rss_lut[i] = i % adapter->num_active_queues;
}
/**
* iavf_init_rss - Prepare for RSS
* @adapter: board private structure
*
* Return 0 on success, negative on failure
**/
static int iavf_init_rss(struct iavf_adapter *adapter)
{
struct iavf_hw *hw = &adapter->hw;
int ret;
if (!RSS_PF(adapter)) {
/* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
if (adapter->vf_res->vf_cap_flags &
VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
adapter->hena = IAVF_DEFAULT_RSS_HENA_EXPANDED;
else
adapter->hena = IAVF_DEFAULT_RSS_HENA;
wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->hena);
wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->hena >> 32));
}
iavf_fill_rss_lut(adapter);
netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size);
ret = iavf_config_rss(adapter);
return ret;
}
/**
* iavf_alloc_q_vectors - Allocate memory for interrupt vectors
* @adapter: board private structure to initialize
*
* We allocate one q_vector per queue interrupt. If allocation fails we
* return -ENOMEM.
**/
static int iavf_alloc_q_vectors(struct iavf_adapter *adapter)
{
int q_idx = 0, num_q_vectors;
struct iavf_q_vector *q_vector;
num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector),
GFP_KERNEL);
if (!adapter->q_vectors)
return -ENOMEM;
for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
q_vector = &adapter->q_vectors[q_idx];
q_vector->adapter = adapter;
q_vector->vsi = &adapter->vsi;
q_vector->v_idx = q_idx;
q_vector->reg_idx = q_idx;
cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
netif_napi_add(adapter->netdev, &q_vector->napi,
iavf_napi_poll, NAPI_POLL_WEIGHT);
}
return 0;
}
/**
* iavf_free_q_vectors - Free memory allocated for interrupt vectors
* @adapter: board private structure to initialize
*
* This function frees the memory allocated to the q_vectors. In addition if
* NAPI is enabled it will delete any references to the NAPI struct prior
* to freeing the q_vector.
**/
static void iavf_free_q_vectors(struct iavf_adapter *adapter)
{
int q_idx, num_q_vectors;
int napi_vectors;
if (!adapter->q_vectors)
return;
num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
napi_vectors = adapter->num_active_queues;
for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx];
if (q_idx < napi_vectors)
netif_napi_del(&q_vector->napi);
}
kfree(adapter->q_vectors);
adapter->q_vectors = NULL;
}
/**
* iavf_reset_interrupt_capability - Reset MSIX setup
* @adapter: board private structure
*
**/
void iavf_reset_interrupt_capability(struct iavf_adapter *adapter)
{
if (!adapter->msix_entries)
return;
pci_disable_msix(adapter->pdev);
kfree(adapter->msix_entries);
adapter->msix_entries = NULL;
}
/**
* iavf_init_interrupt_scheme - Determine if MSIX is supported and init
* @adapter: board private structure to initialize
*
**/
int iavf_init_interrupt_scheme(struct iavf_adapter *adapter)
{
int err;
err = iavf_alloc_queues(adapter);
if (err) {
dev_err(&adapter->pdev->dev,
"Unable to allocate memory for queues\n");
goto err_alloc_queues;
}
rtnl_lock();
err = iavf_set_interrupt_capability(adapter);
rtnl_unlock();
if (err) {
dev_err(&adapter->pdev->dev,
"Unable to setup interrupt capabilities\n");
goto err_set_interrupt;
}
err = iavf_alloc_q_vectors(adapter);
if (err) {
dev_err(&adapter->pdev->dev,
"Unable to allocate memory for queue vectors\n");
goto err_alloc_q_vectors;
}
/* If we've made it so far while ADq flag being ON, then we haven't
* bailed out anywhere in middle. And ADq isn't just enabled but actual
* resources have been allocated in the reset path.
* Now we can truly claim that ADq is enabled.
*/
if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
adapter->num_tc)
dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created",
adapter->num_tc);
dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
(adapter->num_active_queues > 1) ? "Enabled" : "Disabled",
adapter->num_active_queues);
return 0;
err_alloc_q_vectors:
iavf_reset_interrupt_capability(adapter);
err_set_interrupt:
iavf_free_queues(adapter);
err_alloc_queues:
return err;
}
/**
* iavf_free_rss - Free memory used by RSS structs
* @adapter: board private structure
**/
static void iavf_free_rss(struct iavf_adapter *adapter)
{
kfree(adapter->rss_key);
adapter->rss_key = NULL;
kfree(adapter->rss_lut);
adapter->rss_lut = NULL;
}
/**
* iavf_reinit_interrupt_scheme - Reallocate queues and vectors
* @adapter: board private structure
*
* Returns 0 on success, negative on failure
**/
static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
int err;
if (netif_running(netdev))
iavf_free_traffic_irqs(adapter);
iavf_free_misc_irq(adapter);
iavf_reset_interrupt_capability(adapter);
iavf_free_q_vectors(adapter);
iavf_free_queues(adapter);
err = iavf_init_interrupt_scheme(adapter);
if (err)
goto err;
netif_tx_stop_all_queues(netdev);
err = iavf_request_misc_irq(adapter);
if (err)
goto err;
set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
iavf_map_rings_to_vectors(adapter);
err:
return err;
}
/**
* iavf_process_aq_command - process aq_required flags
* and sends aq command
* @adapter: pointer to iavf adapter structure
*
* Returns 0 on success
* Returns error code if no command was sent
* or error code if the command failed.
**/
static int iavf_process_aq_command(struct iavf_adapter *adapter)
{
if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG)
return iavf_send_vf_config_msg(adapter);
if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) {
iavf_disable_queues(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) {
iavf_map_queues(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) {
iavf_add_ether_addrs(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) {
iavf_add_vlans(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) {
iavf_del_ether_addrs(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) {
iavf_del_vlans(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) {
iavf_enable_vlan_stripping(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) {
iavf_disable_vlan_stripping(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) {
iavf_configure_queues(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) {
iavf_enable_queues(adapter);
return 0;
}
if (adapter->aq_required & IAVF_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.
*/
adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS;
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_GET_HENA) {
iavf_get_hena(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_SET_HENA) {
iavf_set_hena(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) {
iavf_set_rss_key(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) {
iavf_set_rss_lut(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_PROMISC) {
iavf_set_promiscuous(adapter, FLAG_VF_UNICAST_PROMISC |
FLAG_VF_MULTICAST_PROMISC);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_ALLMULTI) {
iavf_set_promiscuous(adapter, FLAG_VF_MULTICAST_PROMISC);
return 0;
}
if ((adapter->aq_required & IAVF_FLAG_AQ_RELEASE_PROMISC) &&
(adapter->aq_required & IAVF_FLAG_AQ_RELEASE_ALLMULTI)) {
iavf_set_promiscuous(adapter, 0);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) {
iavf_enable_channels(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) {
iavf_disable_channels(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
iavf_add_cloud_filter(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
iavf_del_cloud_filter(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
iavf_del_cloud_filter(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
iavf_add_cloud_filter(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) {
iavf_add_fdir_filter(adapter);
return IAVF_SUCCESS;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) {
iavf_del_fdir_filter(adapter);
return IAVF_SUCCESS;
}
if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) {
iavf_add_adv_rss_cfg(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) {
iavf_del_adv_rss_cfg(adapter);
return 0;
}
return -EAGAIN;
}
/**
* iavf_startup - first step of driver startup
* @adapter: board private structure
*
* Function process __IAVF_STARTUP driver state.
* When success the state is changed to __IAVF_INIT_VERSION_CHECK
* when fails the state is changed to __IAVF_INIT_FAILED
**/
static void iavf_startup(struct iavf_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct iavf_hw *hw = &adapter->hw;
int err;
WARN_ON(adapter->state != __IAVF_STARTUP);
/* driver loaded, probe complete */
adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
err = iavf_set_mac_type(hw);
if (err) {
dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", err);
goto err;
}
err = iavf_check_reset_complete(hw);
if (err) {
dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
err);
goto err;
}
hw->aq.num_arq_entries = IAVF_AQ_LEN;
hw->aq.num_asq_entries = IAVF_AQ_LEN;
hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
err = iavf_init_adminq(hw);
if (err) {
dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", err);
goto err;
}
err = iavf_send_api_ver(adapter);
if (err) {
dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
iavf_shutdown_adminq(hw);
goto err;
}
iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK);
return;
err:
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/**
* iavf_init_version_check - second step of driver startup
* @adapter: board private structure
*
* Function process __IAVF_INIT_VERSION_CHECK driver state.
* When success the state is changed to __IAVF_INIT_GET_RESOURCES
* when fails the state is changed to __IAVF_INIT_FAILED
**/
static void iavf_init_version_check(struct iavf_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct iavf_hw *hw = &adapter->hw;
int err = -EAGAIN;
WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK);
if (!iavf_asq_done(hw)) {
dev_err(&pdev->dev, "Admin queue command never completed\n");
iavf_shutdown_adminq(hw);
iavf_change_state(adapter, __IAVF_STARTUP);
goto err;
}
/* aq msg sent, awaiting reply */
err = iavf_verify_api_ver(adapter);
if (err) {
if (err == IAVF_ERR_ADMIN_QUEUE_NO_WORK)
err = iavf_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,
VIRTCHNL_VERSION_MAJOR,
VIRTCHNL_VERSION_MINOR);
goto err;
}
err = iavf_send_vf_config_msg(adapter);
if (err) {
dev_err(&pdev->dev, "Unable to send config request (%d)\n",
err);
goto err;
}
iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES);
return;
err:
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/**
* iavf_init_get_resources - third step of driver startup
* @adapter: board private structure
*
* Function process __IAVF_INIT_GET_RESOURCES driver state and
* finishes driver initialization procedure.
* When success the state is changed to __IAVF_DOWN
* when fails the state is changed to __IAVF_INIT_FAILED
**/
static void iavf_init_get_resources(struct iavf_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct iavf_hw *hw = &adapter->hw;
int err;
WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES);
/* aq msg sent, awaiting reply */
if (!adapter->vf_res) {
adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE,
GFP_KERNEL);
if (!adapter->vf_res) {
err = -ENOMEM;
goto err;
}
}
err = iavf_get_vf_config(adapter);
if (err == IAVF_ERR_ADMIN_QUEUE_NO_WORK) {
err = iavf_send_vf_config_msg(adapter);
goto err;
} else if (err == IAVF_ERR_PARAM) {
/* We only get ERR_PARAM if the device is in a very bad
* state or if we've been disabled for previous bad
* behavior. Either way, we're done now.
*/
iavf_shutdown_adminq(hw);
dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n");
return;
}
if (err) {
dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err);
goto err_alloc;
}
err = iavf_process_config(adapter);
if (err)
goto err_alloc;
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED;
netdev->netdev_ops = &iavf_netdev_ops;
iavf_set_ethtool_ops(netdev);
netdev->watchdog_timeo = 5 * HZ;
/* MTU range: 68 - 9710 */
netdev->min_mtu = ETH_MIN_MTU;
netdev->max_mtu = IAVF_MAX_RXBUFFER - IAVF_PACKET_HDR_PAD;
if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
adapter->hw.mac.addr);
eth_hw_addr_random(netdev);
ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
} else {
eth_hw_addr_set(netdev, adapter->hw.mac.addr);
ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
}
adapter->tx_desc_count = IAVF_DEFAULT_TXD;
adapter->rx_desc_count = IAVF_DEFAULT_RXD;
err = iavf_init_interrupt_scheme(adapter);
if (err)
goto err_sw_init;
iavf_map_rings_to_vectors(adapter);
if (adapter->vf_res->vf_cap_flags &
VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE;
err = iavf_request_misc_irq(adapter);
if (err)
goto err_sw_init;
netif_carrier_off(netdev);
adapter->link_up = false;
/* set the semaphore to prevent any callbacks after device registration
* up to time when state of driver will be set to __IAVF_DOWN
*/
rtnl_lock();
if (!adapter->netdev_registered) {
err = register_netdevice(netdev);
if (err) {
rtnl_unlock();
goto err_register;
}
}
adapter->netdev_registered = true;
netif_tx_stop_all_queues(netdev);
if (CLIENT_ALLOWED(adapter)) {
err = iavf_lan_add_device(adapter);
if (err)
dev_info(&pdev->dev, "Failed to add VF to client API service list: %d\n",
err);
}
dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr);
if (netdev->features & NETIF_F_GRO)
dev_info(&pdev->dev, "GRO is enabled\n");
iavf_change_state(adapter, __IAVF_DOWN);
set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
rtnl_unlock();
iavf_misc_irq_enable(adapter);
wake_up(&adapter->down_waitqueue);
adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL);
adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL);
if (!adapter->rss_key || !adapter->rss_lut) {
err = -ENOMEM;
goto err_mem;
}
if (RSS_AQ(adapter))
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
else
iavf_init_rss(adapter);
return;
err_mem:
iavf_free_rss(adapter);
err_register:
iavf_free_misc_irq(adapter);
err_sw_init:
iavf_reset_interrupt_capability(adapter);
err_alloc:
kfree(adapter->vf_res);
adapter->vf_res = NULL;
err:
iavf_change_state(adapter, __IAVF_INIT_FAILED);
}
/**
* iavf_watchdog_task - Periodic call-back task
* @work: pointer to work_struct
**/
static void iavf_watchdog_task(struct work_struct *work)
{
struct iavf_adapter *adapter = container_of(work,
struct iavf_adapter,
watchdog_task.work);
struct iavf_hw *hw = &adapter->hw;
u32 reg_val;
if (!mutex_trylock(&adapter->crit_lock))
goto restart_watchdog;
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
iavf_change_state(adapter, __IAVF_COMM_FAILED);
if (adapter->flags & IAVF_FLAG_RESET_NEEDED &&
adapter->state != __IAVF_RESETTING) {
iavf_change_state(adapter, __IAVF_RESETTING);
adapter->aq_required = 0;
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
}
switch (adapter->state) {
case __IAVF_STARTUP:
iavf_startup(adapter);
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq, &adapter->watchdog_task,
msecs_to_jiffies(30));
return;
case __IAVF_INIT_VERSION_CHECK:
iavf_init_version_check(adapter);
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq, &adapter->watchdog_task,
msecs_to_jiffies(30));
return;
case __IAVF_INIT_GET_RESOURCES:
iavf_init_get_resources(adapter);
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq, &adapter->watchdog_task,
msecs_to_jiffies(1));
return;
case __IAVF_INIT_FAILED:
if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) {
dev_err(&adapter->pdev->dev,
"Failed to communicate with PF; waiting before retry\n");
adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
iavf_shutdown_adminq(hw);
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq,
&adapter->watchdog_task, (5 * HZ));
return;
}
/* Try again from failed step*/
iavf_change_state(adapter, adapter->last_state);
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ);
return;
case __IAVF_COMM_FAILED:
reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
if (reg_val == VIRTCHNL_VFR_VFACTIVE ||
reg_val == VIRTCHNL_VFR_COMPLETED) {
/* A chance for redemption! */
dev_err(&adapter->pdev->dev,
"Hardware came out of reset. Attempting reinit.\n");
/* When init task contacts the PF and
* gets everything set up again, it'll restart the
* watchdog for us. Down, boy. Sit. Stay. Woof.
*/
iavf_change_state(adapter, __IAVF_STARTUP);
adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
}
adapter->aq_required = 0;
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
queue_delayed_work(iavf_wq,
&adapter->watchdog_task,
msecs_to_jiffies(10));
return;
case __IAVF_RESETTING:
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
return;
case __IAVF_DOWN:
case __IAVF_DOWN_PENDING:
case __IAVF_TESTING:
case __IAVF_RUNNING:
if (adapter->current_op) {
if (!iavf_asq_done(hw)) {
dev_dbg(&adapter->pdev->dev,
"Admin queue timeout\n");
iavf_send_api_ver(adapter);
}
} else {
/* An error will be returned if no commands were
* processed; use this opportunity to update stats
*/
if (iavf_process_aq_command(adapter) &&
adapter->state == __IAVF_RUNNING)
iavf_request_stats(adapter);
}
if (adapter->state == __IAVF_RUNNING)
iavf_detect_recover_hung(&adapter->vsi);
break;
case __IAVF_REMOVE:
mutex_unlock(&adapter->crit_lock);
return;
default:
return;
}
/* check for hw reset */
reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK;
if (!reg_val) {
iavf_change_state(adapter, __IAVF_RESETTING);
adapter->flags |= IAVF_FLAG_RESET_PENDING;
adapter->aq_required = 0;
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
queue_work(iavf_wq, &adapter->reset_task);
mutex_unlock(&adapter->crit_lock);
queue_delayed_work(iavf_wq,
&adapter->watchdog_task, HZ * 2);
return;
}
schedule_delayed_work(&adapter->client_task, msecs_to_jiffies(5));
mutex_unlock(&adapter->crit_lock);
restart_watchdog:
queue_work(iavf_wq, &adapter->adminq_task);
if (adapter->aq_required)
queue_delayed_work(iavf_wq, &adapter->watchdog_task,
msecs_to_jiffies(20));
else
queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
}
static void iavf_disable_vf(struct iavf_adapter *adapter)
{
struct iavf_mac_filter *f, *ftmp;
struct iavf_vlan_filter *fv, *fvtmp;
struct iavf_cloud_filter *cf, *cftmp;
adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
/* We don't use netif_running() because it may be true prior to
* ndo_open() returning, so we can't assume it means all our open
* tasks have finished, since we're not holding the rtnl_lock here.
*/
if (adapter->state == __IAVF_RUNNING) {
set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
netif_carrier_off(adapter->netdev);
netif_tx_disable(adapter->netdev);
adapter->link_up = false;
iavf_napi_disable_all(adapter);
iavf_irq_disable(adapter);
iavf_free_traffic_irqs(adapter);
iavf_free_all_tx_resources(adapter);
iavf_free_all_rx_resources(adapter);
}
spin_lock_bh(&adapter->mac_vlan_list_lock);
/* Delete all of the filters */
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
list_del(&f->list);
kfree(f);
}
list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) {
list_del(&fv->list);
kfree(fv);
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
spin_lock_bh(&adapter->cloud_filter_list_lock);
list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) {
list_del(&cf->list);
kfree(cf);
adapter->num_cloud_filters--;
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
iavf_free_misc_irq(adapter);
iavf_reset_interrupt_capability(adapter);
iavf_free_queues(adapter);
iavf_free_q_vectors(adapter);
memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE);
iavf_shutdown_adminq(&adapter->hw);
adapter->netdev->flags &= ~IFF_UP;
mutex_unlock(&adapter->crit_lock);
adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
iavf_change_state(adapter, __IAVF_DOWN);
wake_up(&adapter->down_waitqueue);
dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n");
}
/**
* iavf_reset_task - Call-back task to handle hardware reset
* @work: pointer to work_struct
*
* During reset we need to shut down and reinitialize the admin queue
* before we can use it to communicate with the PF again. We also clear
* and reinit the rings because that context is lost as well.
**/
static void iavf_reset_task(struct work_struct *work)
{
struct iavf_adapter *adapter = container_of(work,
struct iavf_adapter,
reset_task);
struct virtchnl_vf_resource *vfres = adapter->vf_res;
struct net_device *netdev = adapter->netdev;
struct iavf_hw *hw = &adapter->hw;
struct iavf_mac_filter *f, *ftmp;
struct iavf_vlan_filter *vlf;
struct iavf_cloud_filter *cf;
u32 reg_val;
int i = 0, err;
bool running;
/* When device is being removed it doesn't make sense to run the reset
* task, just return in such a case.
*/
if (mutex_is_locked(&adapter->remove_lock))
return;
if (iavf_lock_timeout(&adapter->crit_lock, 200)) {
schedule_work(&adapter->reset_task);
return;
}
while (!mutex_trylock(&adapter->client_lock))
usleep_range(500, 1000);
if (CLIENT_ENABLED(adapter)) {
adapter->flags &= ~(IAVF_FLAG_CLIENT_NEEDS_OPEN |
IAVF_FLAG_CLIENT_NEEDS_CLOSE |
IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS |
IAVF_FLAG_SERVICE_CLIENT_REQUESTED);
cancel_delayed_work_sync(&adapter->client_task);
iavf_notify_client_close(&adapter->vsi, true);
}
iavf_misc_irq_disable(adapter);
if (adapter->flags & IAVF_FLAG_RESET_NEEDED) {
adapter->flags &= ~IAVF_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.
*/
iavf_shutdown_adminq(hw);
iavf_init_adminq(hw);
iavf_request_reset(adapter);
}
adapter->flags |= IAVF_FLAG_RESET_PENDING;
/* poll until we see the reset actually happen */
for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) {
reg_val = rd32(hw, IAVF_VF_ARQLEN1) &
IAVF_VF_ARQLEN1_ARQENABLE_MASK;
if (!reg_val)
break;
usleep_range(5000, 10000);
}
if (i == IAVF_RESET_WAIT_DETECTED_COUNT) {
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 < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
/* sleep first to make sure a minimum wait time is met */
msleep(IAVF_RESET_WAIT_MS);
reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
if (reg_val == VIRTCHNL_VFR_VFACTIVE)
break;
}
pci_set_master(adapter->pdev);
if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) {
dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
reg_val);
iavf_disable_vf(adapter);
mutex_unlock(&adapter->client_lock);
return; /* Do not attempt to reinit. It's dead, Jim. */
}
continue_reset:
/* We don't use netif_running() because it may be true prior to
* ndo_open() returning, so we can't assume it means all our open
* tasks have finished, since we're not holding the rtnl_lock here.
*/
running = ((adapter->state == __IAVF_RUNNING) ||
(adapter->state == __IAVF_RESETTING));
if (running) {
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
adapter->link_up = false;
iavf_napi_disable_all(adapter);
}
iavf_irq_disable(adapter);
iavf_change_state(adapter, __IAVF_RESETTING);
adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
/* free the Tx/Rx rings and descriptors, might be better to just
* re-use them sometime in the future
*/
iavf_free_all_rx_resources(adapter);
iavf_free_all_tx_resources(adapter);
adapter->flags |= IAVF_FLAG_QUEUES_DISABLED;
/* kill and reinit the admin queue */
iavf_shutdown_adminq(hw);
adapter->current_op = VIRTCHNL_OP_UNKNOWN;
err = iavf_init_adminq(hw);
if (err)
dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
err);
adapter->aq_required = 0;
if (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED) {
err = iavf_reinit_interrupt_scheme(adapter);
if (err)
goto reset_err;
}
if (RSS_AQ(adapter)) {
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
} else {
err = iavf_init_rss(adapter);
if (err)
goto reset_err;
}
adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG;
adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS;
spin_lock_bh(&adapter->mac_vlan_list_lock);
/* Delete filter for the current MAC address, it could have
* been changed by the PF via administratively set MAC.
* Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES.
*/
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) {
list_del(&f->list);
kfree(f);
}
}
/* 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(vlf, &adapter->vlan_filter_list, list) {
vlf->add = true;
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
/* check if TCs are running and re-add all cloud filters */
spin_lock_bh(&adapter->cloud_filter_list_lock);
if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
adapter->num_tc) {
list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
cf->add = true;
}
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
iavf_misc_irq_enable(adapter);
mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2);
/* We were running when the reset started, so we need to restore some
* state here.
*/
if (running) {
/* allocate transmit descriptors */
err = iavf_setup_all_tx_resources(adapter);
if (err)
goto reset_err;
/* allocate receive descriptors */
err = iavf_setup_all_rx_resources(adapter);
if (err)
goto reset_err;
if (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED) {
err = iavf_request_traffic_irqs(adapter, netdev->name);
if (err)
goto reset_err;
adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
}
iavf_configure(adapter);
/* iavf_up_complete() will switch device back
* to __IAVF_RUNNING
*/
iavf_up_complete(adapter);
iavf_irq_enable(adapter, true);
} else {
iavf_change_state(adapter, __IAVF_DOWN);
wake_up(&adapter->down_waitqueue);
}
mutex_unlock(&adapter->client_lock);
mutex_unlock(&adapter->crit_lock);
return;
reset_err:
mutex_unlock(&adapter->client_lock);
mutex_unlock(&adapter->crit_lock);
if (running)
iavf_change_state(adapter, __IAVF_RUNNING);
dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n");
iavf_close(netdev);
}
/**
* iavf_adminq_task - worker thread to clean the admin queue
* @work: pointer to work_struct containing our data
**/
static void iavf_adminq_task(struct work_struct *work)
{
struct iavf_adapter *adapter =
container_of(work, struct iavf_adapter, adminq_task);
struct iavf_hw *hw = &adapter->hw;
struct iavf_arq_event_info event;
enum virtchnl_ops v_op;
enum iavf_status ret, v_ret;
u32 val, oldval;
u16 pending;
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
goto out;
event.buf_len = IAVF_MAX_AQ_BUF_SIZE;
event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
if (!event.msg_buf)
goto out;
if (iavf_lock_timeout(&adapter->crit_lock, 200))
goto freedom;
do {
ret = iavf_clean_arq_element(hw, &event, &pending);
v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low);
if (ret || !v_op)
break; /* No event to process or error cleaning ARQ */
iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf,
event.msg_len);
if (pending != 0)
memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE);
} while (pending);
mutex_unlock(&adapter->crit_lock);
if ((adapter->flags &
(IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) ||
adapter->state == __IAVF_RESETTING)
goto freedom;
/* check for error indications */
val = rd32(hw, hw->aq.arq.len);
if (val == 0xdeadbeef) /* indicates device in reset */
goto freedom;
oldval = val;
if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) {
dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n");
val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK;
}
if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) {
dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n");
val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK;
}
if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) {
dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n");
val &= ~IAVF_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 & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK;
}
if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) {
dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n");
val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK;
}
if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n");
val &= ~IAVF_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 */
iavf_misc_irq_enable(adapter);
}
/**
* iavf_client_task - worker thread to perform client work
* @work: pointer to work_struct containing our data
*
* This task handles client interactions. Because client calls can be
* reentrant, we can't handle them in the watchdog.
**/
static void iavf_client_task(struct work_struct *work)
{
struct iavf_adapter *adapter =
container_of(work, struct iavf_adapter, client_task.work);
/* If we can't get the client bit, just give up. We'll be rescheduled
* later.
*/
if (!mutex_trylock(&adapter->client_lock))
return;
if (adapter->flags & IAVF_FLAG_SERVICE_CLIENT_REQUESTED) {
iavf_client_subtask(adapter);
adapter->flags &= ~IAVF_FLAG_SERVICE_CLIENT_REQUESTED;
goto out;
}
if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS) {
iavf_notify_client_l2_params(&adapter->vsi);
adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS;
goto out;
}
if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_CLOSE) {
iavf_notify_client_close(&adapter->vsi, false);
adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_CLOSE;
goto out;
}
if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_OPEN) {
iavf_notify_client_open(&adapter->vsi);
adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_OPEN;
}
out:
mutex_unlock(&adapter->client_lock);
}
/**
* iavf_free_all_tx_resources - Free Tx Resources for All Queues
* @adapter: board private structure
*
* Free all transmit software resources
**/
void iavf_free_all_tx_resources(struct iavf_adapter *adapter)
{
int i;
if (!adapter->tx_rings)
return;
for (i = 0; i < adapter->num_active_queues; i++)
if (adapter->tx_rings[i].desc)
iavf_free_tx_resources(&adapter->tx_rings[i]);
}
/**
* iavf_setup_all_tx_resources - allocate all queues Tx resources
* @adapter: board private structure
*
* If this function returns with an error, then it's possible one or
* more of the rings is populated (while the rest are not). It is the
* callers duty to clean those orphaned rings.
*
* Return 0 on success, negative on failure
**/
static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter)
{
int i, err = 0;
for (i = 0; i < adapter->num_active_queues; i++) {
adapter->tx_rings[i].count = adapter->tx_desc_count;
err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]);
if (!err)
continue;
dev_err(&adapter->pdev->dev,
"Allocation for Tx Queue %u failed\n", i);
break;
}
return err;
}
/**
* iavf_setup_all_rx_resources - allocate all queues Rx resources
* @adapter: board private structure
*
* If this function returns with an error, then it's possible one or
* more of the rings is populated (while the rest are not). It is the
* callers duty to clean those orphaned rings.
*
* Return 0 on success, negative on failure
**/
static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter)
{
int i, err = 0;
for (i = 0; i < adapter->num_active_queues; i++) {
adapter->rx_rings[i].count = adapter->rx_desc_count;
err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]);
if (!err)
continue;
dev_err(&adapter->pdev->dev,
"Allocation for Rx Queue %u failed\n", i);
break;
}
return err;
}
/**
* iavf_free_all_rx_resources - Free Rx Resources for All Queues
* @adapter: board private structure
*
* Free all receive software resources
**/
void iavf_free_all_rx_resources(struct iavf_adapter *adapter)
{
int i;
if (!adapter->rx_rings)
return;
for (i = 0; i < adapter->num_active_queues; i++)
if (adapter->rx_rings[i].desc)
iavf_free_rx_resources(&adapter->rx_rings[i]);
}
/**
* iavf_validate_tx_bandwidth - validate the max Tx bandwidth
* @adapter: board private structure
* @max_tx_rate: max Tx bw for a tc
**/
static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter,
u64 max_tx_rate)
{
int speed = 0, ret = 0;
if (ADV_LINK_SUPPORT(adapter)) {
if (adapter->link_speed_mbps < U32_MAX) {
speed = adapter->link_speed_mbps;
goto validate_bw;
} else {
dev_err(&adapter->pdev->dev, "Unknown link speed\n");
return -EINVAL;
}
}
switch (adapter->link_speed) {
case VIRTCHNL_LINK_SPEED_40GB:
speed = SPEED_40000;
break;
case VIRTCHNL_LINK_SPEED_25GB:
speed = SPEED_25000;
break;
case VIRTCHNL_LINK_SPEED_20GB:
speed = SPEED_20000;
break;
case VIRTCHNL_LINK_SPEED_10GB:
speed = SPEED_10000;
break;
case VIRTCHNL_LINK_SPEED_5GB:
speed = SPEED_5000;
break;
case VIRTCHNL_LINK_SPEED_2_5GB:
speed = SPEED_2500;
break;
case VIRTCHNL_LINK_SPEED_1GB:
speed = SPEED_1000;
break;
case VIRTCHNL_LINK_SPEED_100MB:
speed = SPEED_100;
break;
default:
break;
}
validate_bw:
if (max_tx_rate > speed) {
dev_err(&adapter->pdev->dev,
"Invalid tx rate specified\n");
ret = -EINVAL;
}
return ret;
}
/**
* iavf_validate_ch_config - validate queue mapping info
* @adapter: board private structure
* @mqprio_qopt: queue parameters
*
* This function validates if the config provided by the user to
* configure queue channels is valid or not. Returns 0 on a valid
* config.
**/
static int iavf_validate_ch_config(struct iavf_adapter *adapter,
struct tc_mqprio_qopt_offload *mqprio_qopt)
{
u64 total_max_rate = 0;
int i, num_qps = 0;
u64 tx_rate = 0;
int ret = 0;
if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS ||
mqprio_qopt->qopt.num_tc < 1)
return -EINVAL;
for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) {
if (!mqprio_qopt->qopt.count[i] ||
mqprio_qopt->qopt.offset[i] != num_qps)
return -EINVAL;
if (mqprio_qopt->min_rate[i]) {
dev_err(&adapter->pdev->dev,
"Invalid min tx rate (greater than 0) specified\n");
return -EINVAL;
}
/*convert to Mbps */
tx_rate = div_u64(mqprio_qopt->max_rate[i],
IAVF_MBPS_DIVISOR);
total_max_rate += tx_rate;
num_qps += mqprio_qopt->qopt.count[i];
}
if (num_qps > IAVF_MAX_REQ_QUEUES)
return -EINVAL;
ret = iavf_validate_tx_bandwidth(adapter, total_max_rate);
return ret;
}
/**
* iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes
* @adapter: board private structure
**/
static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter)
{
struct iavf_cloud_filter *cf, *cftmp;
spin_lock_bh(&adapter->cloud_filter_list_lock);
list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list,
list) {
list_del(&cf->list);
kfree(cf);
adapter->num_cloud_filters--;
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
}
/**
* __iavf_setup_tc - configure multiple traffic classes
* @netdev: network interface device structure
* @type_data: tc offload data
*
* This function processes the config information provided by the
* user to configure traffic classes/queue channels and packages the
* information to request the PF to setup traffic classes.
*
* Returns 0 on success.
**/
static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
{
struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
struct iavf_adapter *adapter = netdev_priv(netdev);
struct virtchnl_vf_resource *vfres = adapter->vf_res;
u8 num_tc = 0, total_qps = 0;
int ret = 0, netdev_tc = 0;
u64 max_tx_rate;
u16 mode;
int i;
num_tc = mqprio_qopt->qopt.num_tc;
mode = mqprio_qopt->mode;
/* delete queue_channel */
if (!mqprio_qopt->qopt.hw) {
if (adapter->ch_config.state == __IAVF_TC_RUNNING) {
/* reset the tc configuration */
netdev_reset_tc(netdev);
adapter->num_tc = 0;
netif_tx_stop_all_queues(netdev);
netif_tx_disable(netdev);
iavf_del_all_cloud_filters(adapter);
adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS;
goto exit;
} else {
return -EINVAL;
}
}
/* add queue channel */
if (mode == TC_MQPRIO_MODE_CHANNEL) {
if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) {
dev_err(&adapter->pdev->dev, "ADq not supported\n");
return -EOPNOTSUPP;
}
if (adapter->ch_config.state != __IAVF_TC_INVALID) {
dev_err(&adapter->pdev->dev, "TC configuration already exists\n");
return -EINVAL;
}
ret = iavf_validate_ch_config(adapter, mqprio_qopt);
if (ret)
return ret;
/* Return if same TC config is requested */
if (adapter->num_tc == num_tc)
return 0;
adapter->num_tc = num_tc;
for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
if (i < num_tc) {
adapter->ch_config.ch_info[i].count =
mqprio_qopt->qopt.count[i];
adapter->ch_config.ch_info[i].offset =
mqprio_qopt->qopt.offset[i];
total_qps += mqprio_qopt->qopt.count[i];
max_tx_rate = mqprio_qopt->max_rate[i];
/* convert to Mbps */
max_tx_rate = div_u64(max_tx_rate,
IAVF_MBPS_DIVISOR);
adapter->ch_config.ch_info[i].max_tx_rate =
max_tx_rate;
} else {
adapter->ch_config.ch_info[i].count = 1;
adapter->ch_config.ch_info[i].offset = 0;
}
}
adapter->ch_config.total_qps = total_qps;
netif_tx_stop_all_queues(netdev);
netif_tx_disable(netdev);
adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS;
netdev_reset_tc(netdev);
/* Report the tc mapping up the stack */
netdev_set_num_tc(adapter->netdev, num_tc);
for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
u16 qcount = mqprio_qopt->qopt.count[i];
u16 qoffset = mqprio_qopt->qopt.offset[i];
if (i < num_tc)
netdev_set_tc_queue(netdev, netdev_tc++, qcount,
qoffset);
}
}
exit:
return ret;
}
/**
* iavf_parse_cls_flower - Parse tc flower filters provided by kernel
* @adapter: board private structure
* @f: pointer to struct flow_cls_offload
* @filter: pointer to cloud filter structure
*/
static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
struct flow_cls_offload *f,
struct iavf_cloud_filter *filter)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_dissector *dissector = rule->match.dissector;
u16 n_proto_mask = 0;
u16 n_proto_key = 0;
u8 field_flags = 0;
u16 addr_type = 0;
u16 n_proto = 0;
int i = 0;
struct virtchnl_filter *vf = &filter->f;
if (dissector->used_keys &
~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
BIT(FLOW_DISSECTOR_KEY_BASIC) |
BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
BIT(FLOW_DISSECTOR_KEY_VLAN) |
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT(FLOW_DISSECTOR_KEY_PORTS) |
BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%x\n",
dissector->used_keys);
return -EOPNOTSUPP;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
struct flow_match_enc_keyid match;
flow_rule_match_enc_keyid(rule, &match);
if (match.mask->keyid != 0)
field_flags |= IAVF_CLOUD_FIELD_TEN_ID;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
struct flow_match_basic match;
flow_rule_match_basic(rule, &match);
n_proto_key = ntohs(match.key->n_proto);
n_proto_mask = ntohs(match.mask->n_proto);
if (n_proto_key == ETH_P_ALL) {