SSL iavf_main.c
Interaktion und PortierbarkeitC
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */
#include <linux/net/intel/libie/rx.h>
#include <net/netdev_lock.h>
#include "iavf.h"
#include "iavf_ptp.h"
#include "iavf_prototype.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 0 s
*
* { 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_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver" );
MODULE_IMPORT_NS("LIBETH" );
MODULE_IMPORT_NS("LIBIE" );
MODULE_IMPORT_NS("LIBIE_ADMINQ" );
MODULE_LICENSE("GPL v2" );
static const struct net_device_ops iavf_netdev_ops;
int iavf_status_to_errno(enum iavf_status status)
{
switch (status) {
case IAVF_SUCCESS:
return 0 ;
case IAVF_ERR_PARAM:
case IAVF_ERR_MAC_TYPE:
case IAVF_ERR_INVALID_MAC_ADDR:
case IAVF_ERR_INVALID_LINK_SETTINGS:
case IAVF_ERR_INVALID_PD_ID:
case IAVF_ERR_INVALID_QP_ID:
case IAVF_ERR_INVALID_CQ_ID:
case IAVF_ERR_INVALID_CEQ_ID:
case IAVF_ERR_INVALID_AEQ_ID:
case IAVF_ERR_INVALID_SIZE:
case IAVF_ERR_INVALID_ARP_INDEX:
case IAVF_ERR_INVALID_FPM_FUNC_ID:
case IAVF_ERR_QP_INVALID_MSG_SIZE:
case IAVF_ERR_INVALID_FRAG_COUNT:
case IAVF_ERR_INVALID_ALIGNMENT:
case IAVF_ERR_INVALID_PUSH_PAGE_INDEX:
case IAVF_ERR_INVALID_IMM_DATA_SIZE:
case IAVF_ERR_INVALID_VF_ID:
case IAVF_ERR_INVALID_HMCFN_ID:
case IAVF_ERR_INVALID_PBLE_INDEX:
case IAVF_ERR_INVALID_SD_INDEX:
case IAVF_ERR_INVALID_PAGE_DESC_INDEX:
case IAVF_ERR_INVALID_SD_TYPE:
case IAVF_ERR_INVALID_HMC_OBJ_INDEX:
case IAVF_ERR_INVALID_HMC_OBJ_COUNT:
case IAVF_ERR_INVALID_SRQ_ARM_LIMIT:
return -EINVAL;
case IAVF_ERR_NVM:
case IAVF_ERR_NVM_CHECKSUM:
case IAVF_ERR_PHY:
case IAVF_ERR_CONFIG:
case IAVF_ERR_UNKNOWN_PHY:
case IAVF_ERR_LINK_SETUP:
case IAVF_ERR_ADAPTER_STOPPED:
case IAVF_ERR_PRIMARY_REQUESTS_PENDING:
case IAVF_ERR_AUTONEG_NOT_COMPLETE:
case IAVF_ERR_RESET_FAILED:
case IAVF_ERR_BAD_PTR:
case IAVF_ERR_SWFW_SYNC:
case IAVF_ERR_QP_TOOMANY_WRS_POSTED:
case IAVF_ERR_QUEUE_EMPTY:
case IAVF_ERR_FLUSHED_QUEUE:
case IAVF_ERR_OPCODE_MISMATCH:
case IAVF_ERR_CQP_COMPL_ERROR:
case IAVF_ERR_BACKING_PAGE_ERROR:
case IAVF_ERR_NO_PBLCHUNKS_AVAILABLE:
case IAVF_ERR_MEMCPY_FAILED:
case IAVF_ERR_SRQ_ENABLED:
case IAVF_ERR_ADMIN_QUEUE_ERROR:
case IAVF_ERR_ADMIN_QUEUE_FULL:
case IAVF_ERR_BAD_RDMA_CQE:
case IAVF_ERR_NVM_BLANK_MODE:
case IAVF_ERR_PE_DOORBELL_NOT_ENABLED:
case IAVF_ERR_DIAG_TEST_FAILED:
case IAVF_ERR_FIRMWARE_API_VERSION:
case IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR:
return -EIO;
case IAVF_ERR_DEVICE_NOT_SUPPORTED:
return -ENODEV;
case IAVF_ERR_NO_AVAILABLE_VSI:
case IAVF_ERR_RING_FULL:
return -ENOSPC;
case IAVF_ERR_NO_MEMORY:
return -ENOMEM;
case IAVF_ERR_TIMEOUT:
case IAVF_ERR_ADMIN_QUEUE_TIMEOUT:
return -ETIMEDOUT;
case IAVF_ERR_NOT_IMPLEMENTED:
case IAVF_NOT_SUPPORTED:
return -EOPNOTSUPP;
case IAVF_ERR_ADMIN_QUEUE_NO_WORK:
return -EALREADY;
case IAVF_ERR_NOT_READY:
return -EBUSY;
case IAVF_ERR_BUF_TOO_SHORT:
return -EMSGSIZE;
}
return -EIO;
}
int virtchnl_status_to_errno(enum virtchnl_status_code v_status)
{
switch (v_status) {
case VIRTCHNL_STATUS_SUCCESS:
return 0 ;
case VIRTCHNL_STATUS_ERR_PARAM:
case VIRTCHNL_STATUS_ERR_INVALID_VF_ID:
return -EINVAL;
case VIRTCHNL_STATUS_ERR_NO_MEMORY:
return -ENOMEM;
case VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH:
case VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR:
case VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR:
return -EIO;
case VIRTCHNL_STATUS_ERR_NOT_SUPPORTED:
return -EOPNOTSUPP;
}
return -EIO;
}
/**
* 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_is_reset_in_progress - Check if a reset is in progress
* @ adapter : board private structure
*/
static bool iavf_is_reset_in_progress(struct iavf_adapter *adapter)
{
if (adapter->state == __IAVF_RESETTING ||
adapter->flags & (IAVF_FLAG_RESET_PENDING |
IAVF_FLAG_RESET_NEEDED))
return true ;
return false ;
}
/**
* iavf_wait_for_reset - Wait for reset to finish .
* @ adapter : board private structure
*
* Returns 0 if reset finished successfully , negative on timeout or interrupt .
*/
int iavf_wait_for_reset(struct iavf_adapter *adapter)
{
int ret = wait_event_interruptible_timeout(adapter->reset_waitqueue,
!iavf_is_reset_in_progress(adapter),
msecs_to_jiffies(5000 ));
/* If ret < 0 then it means wait was interrupted.
* If ret = = 0 then it means we got a timeout while waiting
* for reset to finish .
* If ret > 0 it means reset has finished .
*/
if (ret > 0 )
return 0 ;
else if (ret < 0 )
return -EINTR;
else
return -EBUSY;
}
/**
* 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 - wrapper for DMA memory freeing
* @ hw : pointer to the HW structure
* @ mem : ptr to mem struct to free
**/
enum iavf_status iavf_free_dma_mem(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 - virt memory alloc wrapper
* @ 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(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 - virt memory free wrapper
* @ hw : pointer to the HW structure
* @ mem : ptr to mem struct to free
**/
void iavf_free_virt_mem(struct iavf_hw *hw, struct iavf_virt_mem *mem)
{
kfree(mem->va);
}
/**
* iavf_schedule_reset - Set the flags and schedule a reset event
* @ adapter : board private structure
* @ flags : IAVF_FLAG_RESET_PENDING or IAVF_FLAG_RESET_NEEDED
**/
void iavf_schedule_reset(struct iavf_adapter *adapter, u64 flags)
{
if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section) &&
!(adapter->flags &
(IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) {
adapter->flags |= flags;
queue_work(adapter->wq, &adapter->reset_task);
}
}
/**
* iavf_schedule_aq_request - Set the flags and schedule aq request
* @ adapter : board private structure
* @ flags : requested aq flags
**/
void iavf_schedule_aq_request(struct iavf_adapter *adapter, u64 flags)
{
adapter->aq_required |= flags;
mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0 );
}
/**
* 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_FLAG_RESET_NEEDED);
}
/**
* 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 all queues
* @ adapter : board private structure
**/
static void iavf_irq_enable_queues(struct iavf_adapter *adapter)
{
struct iavf_hw *hw = &adapter->hw;
int i;
for (i = 1 ; i < adapter->num_msix_vectors; i++) {
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);
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);
if (adapter->state != __IAVF_REMOVE)
/* schedule work on the private workqueue */
queue_work(adapter->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_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;
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-%u" , basename, rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.ring) {
snprintf(q_vector->name, sizeof (q_vector->name),
"iavf-%s-rx-%u" , basename, rx_int_idx++);
} else if (q_vector->tx.ring) {
snprintf(q_vector->name, sizeof (q_vector->name),
"iavf-%s-tx-%u" , 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;
}
}
return 0 ;
free_queue_irqs:
while (vector) {
vector--;
irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
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)
{
struct iavf_q_vector *q_vector;
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++) {
q_vector = &adapter->q_vectors[vector];
netif_napi_set_irq_locked(&q_vector->napi, -1 );
irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
free_irq(irq_num, q_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_select_rx_desc_format - Select Rx descriptor format
* @ adapter : adapter private structure
*
* Select what Rx descriptor format based on availability and enabled
* features .
*
* Return : the desired RXDID to select for a given Rx queue , as defined by
* enum virtchnl_rxdid_format .
*/
static u8 iavf_select_rx_desc_format(const struct iavf_adapter *adapter)
{
u64 rxdids = adapter->supp_rxdids;
/* If we did not negotiate VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, we must
* stick with the default value of the legacy 32 byte format .
*/
if (!IAVF_RXDID_ALLOWED(adapter))
return VIRTCHNL_RXDID_1_32B_BASE;
/* Rx timestamping requires the use of flexible NIC descriptors */
if (iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_RX_TSTAMP)) {
if (rxdids & BIT(VIRTCHNL_RXDID_2_FLEX_SQ_NIC))
return VIRTCHNL_RXDID_2_FLEX_SQ_NIC;
pci_warn(adapter->pdev,
"Unable to negotiate flexible descriptor format\n" );
}
/* Warn if the PF does not list support for the default legacy
* descriptor format . This shouldn ' t happen , as this is the format
* used if VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC is not supported . It is
* likely caused by a bug in the PF implementation failing to indicate
* support for the format .
*/
if (!(rxdids & VIRTCHNL_RXDID_1_32B_BASE_M))
netdev_warn(adapter->netdev, "PF does not list support for default Rx descriptor format\n" );
return VIRTCHNL_RXDID_1_32B_BASE;
}
/**
* 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)
{
struct iavf_hw *hw = &adapter->hw;
adapter->rxdid = iavf_select_rx_desc_format(adapter);
for (u32 i = 0 ; i < adapter->num_active_queues; i++) {
adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i);
adapter->rx_rings[i].rxdid = adapter->rxdid;
}
}
/**
* 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,
struct iavf_vlan vlan)
{
struct iavf_vlan_filter *f;
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->vlan.vid == vlan.vid &&
f->vlan.tpid == vlan.tpid)
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,
struct iavf_vlan 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->state = IAVF_VLAN_ADD;
adapter->num_vlan_filters++;
iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_VLAN_FILTER);
} else if (f->state == IAVF_VLAN_REMOVE) {
/* IAVF_VLAN_REMOVE means that VLAN wasn't yet removed.
* We can safely only change the state here .
*/
f->state = IAVF_VLAN_ACTIVE;
}
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, struct iavf_vlan vlan)
{
struct iavf_vlan_filter *f;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_vlan(adapter, vlan);
if (f) {
/* IAVF_ADD_VLAN means that VLAN wasn't even added yet.
* Remove it from the list .
*/
if (f->state == IAVF_VLAN_ADD) {
list_del(&f->list);
kfree(f);
adapter->num_vlan_filters--;
} else {
f->state = IAVF_VLAN_REMOVE;
iavf_schedule_aq_request(adapter,
IAVF_FLAG_AQ_DEL_VLAN_FILTER);
}
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
}
/**
* iavf_restore_filters
* @ adapter : board private structure
*
* Restore existing non MAC filters when VF netdev comes back up
**/
static void iavf_restore_filters(struct iavf_adapter *adapter)
{
struct iavf_vlan_filter *f;
/* re-add all VLAN filters */
spin_lock_bh(&adapter->mac_vlan_list_lock);
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->state == IAVF_VLAN_INACTIVE)
f->state = IAVF_VLAN_ADD;
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
}
/**
* iavf_get_num_vlans_added - get number of VLANs added
* @ adapter : board private structure
*/
u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
{
return adapter->num_vlan_filters;
}
/**
* iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF
* @ adapter : board private structure
*
* This depends on the negotiated VLAN capability . For VIRTCHNL_VF_OFFLOAD_VLAN ,
* do not impose a limit as that maintains current behavior and for
* VIRTCHNL_VF_OFFLOAD_VLAN_V2 , use the maximum allowed sent from the PF .
**/
static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter)
{
/* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has
* never been a limit on the VF driver side
*/
if (VLAN_ALLOWED(adapter))
return VLAN_N_VID;
else if (VLAN_V2_ALLOWED(adapter))
return adapter->vlan_v2_caps.filtering.max_filters;
return 0 ;
}
/**
* iavf_max_vlans_added - check if maximum VLANs allowed already exist
* @ adapter : board private structure
**/
static bool iavf_max_vlans_added(struct iavf_adapter *adapter)
{
if (iavf_get_num_vlans_added(adapter) <
iavf_get_max_vlans_allowed(adapter))
return false ;
return true ;
}
/**
* 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);
/* Do not track VLAN 0 filter, always added by the PF on VF init */
if (!vid)
return 0 ;
if (!VLAN_FILTERING_ALLOWED(adapter))
return -EIO;
if (iavf_max_vlans_added(adapter)) {
netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n" ,
iavf_get_max_vlans_allowed(adapter));
return -EIO;
}
if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))))
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);
/* We do not track VLAN 0 filter */
if (!vid)
return 0 ;
iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)));
return 0 ;
}
/**
* 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->add_handled = false ;
f->is_new_mac = true ;
f->is_primary = ether_addr_equal(macaddr, adapter->hw.mac.addr);
adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
} else {
f->remove = false ;
}
return f;
}
/**
* iavf_replace_primary_mac - Replace current primary address
* @ adapter : board private structure
* @ new_mac : new MAC address to be applied
*
* Replace current dev_addr and send request to PF for removal of previous
* primary MAC address filter and addition of new primary MAC filter .
* Return 0 for success , - ENOMEM for failure .
*
* Do not call this with mac_vlan_list_lock !
**/
static int iavf_replace_primary_mac(struct iavf_adapter *adapter,
const u8 *new_mac)
{
struct iavf_hw *hw = &adapter->hw;
struct iavf_mac_filter *new_f;
struct iavf_mac_filter *old_f;
spin_lock_bh(&adapter->mac_vlan_list_lock);
new_f = iavf_add_filter(adapter, new_mac);
if (!new_f) {
spin_unlock_bh(&adapter->mac_vlan_list_lock);
return -ENOMEM;
}
old_f = iavf_find_filter(adapter, hw->mac.addr);
if (old_f) {
old_f->is_primary = false ;
old_f->remove = true ;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
}
/* Always send the request to add if changing primary MAC,
* even if filter is already present on the list
*/
new_f->is_primary = true ;
new_f->add = true ;
ether_addr_copy(hw->mac.addr, new_mac);
spin_unlock_bh(&adapter->mac_vlan_list_lock);
/* schedule the watchdog task to immediately process the request */
iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_MAC_FILTER);
return 0 ;
}
/**
* iavf_is_mac_set_handled - wait for a response to set MAC from PF
* @ netdev : network interface device structure
* @ macaddr : MAC address to set
*
* Returns true on success , false on failure
*/
static bool iavf_is_mac_set_handled(struct net_device *netdev,
const u8 *macaddr)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
struct iavf_mac_filter *f;
bool ret = false ;
spin_lock_bh(&adapter->mac_vlan_list_lock);
f = iavf_find_filter(adapter, macaddr);
if (!f || (!f->add && f->add_handled))
ret = true ;
spin_unlock_bh(&adapter->mac_vlan_list_lock);
return ret;
}
/**
* 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 sockaddr *addr = p;
int ret;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
ret = iavf_replace_primary_mac(adapter, addr->sa_data);
if (ret)
return ret;
ret = wait_event_interruptible_timeout(adapter->vc_waitqueue,
iavf_is_mac_set_handled(netdev, addr->sa_data),
msecs_to_jiffies(2500 ));
/* If ret < 0 then it means wait was interrupted.
* If ret = = 0 then it means we got a timeout .
* else it means we got response for set MAC from PF ,
* check if netdev MAC was updated to requested MAC ,
* if yes then set MAC succeeded otherwise it failed return - EACCES
* /
if ( ret < 0 )
return ret ;
if ( ! ret )
return - EAGAIN ;
if ( ! ether_addr_equal ( netdev - > dev_addr , addr - > sa_data ) )
return - EACCES ;
return 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_promiscuous_mode_changed - check if promiscuous mode bits changed
* @ adapter : device specific adapter
* /
bool iavf_promiscuous_mode_changed ( struct iavf_adapter * adapter )
{
return ( adapter - > current_netdev_promisc_flags ^ adapter - > netdev - > flags ) &
( IFF_PROMISC | IFF_ALLMULTI ) ;
}
/ * *
* 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 ) ;
spin_lock_bh ( & adapter - > current_netdev_promisc_flags_lock ) ;
if ( iavf_promiscuous_mode_changed ( adapter ) )
adapter - > aq_required | = IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE ;
spin_unlock_bh ( & adapter - > current_netdev_promisc_flags_lock ) ;
}
/ * *
* 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_locked ( 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_locked ( & 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
* /
static void iavf_up_complete ( struct iavf_adapter * adapter )
{
netdev_assert_locked ( adapter - > netdev ) ;
iavf_change_state ( adapter , _ _ IAVF_RUNNING ) ;
clear_bit ( _ _ IAVF_VSI_DOWN , adapter - > vsi . state ) ;
iavf_napi_enable_all ( adapter ) ;
iavf_schedule_aq_request ( adapter , IAVF_FLAG_AQ_ENABLE_QUEUES ) ;
}
/ * *
* iavf_clear_mac_vlan_filters - Remove mac and vlan filters not sent to PF
* yet and mark other to be removed .
* @ adapter : board private structure
* * /
static void iavf_clear_mac_vlan_filters ( struct iavf_adapter * adapter )
{
struct iavf_vlan_filter * vlf , * vlftmp ;
struct iavf_mac_filter * f , * ftmp ;
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_safe ( f , ftmp , & adapter - > mac_filter_list ,
list ) {
if ( f - > add ) {
list_del ( & f - > list ) ;
kfree ( f ) ;
} else {
f - > remove = true ;
}
}
/ * disable all VLAN filters * /
list_for_each_entry_safe ( vlf , vlftmp , & adapter - > vlan_filter_list ,
list )
vlf - > state = IAVF_VLAN_DISABLE ;
spin_unlock_bh ( & adapter - > mac_vlan_list_lock ) ;
}
/ * *
* iavf_clear_cloud_filters - Remove cloud filters not sent to PF yet and
* mark other to be removed .
* @ adapter : board private structure
* * /
static void iavf_clear_cloud_filters ( struct iavf_adapter * adapter )
{
struct iavf_cloud_filter * cf , * cftmp ;
/ * remove all cloud filters * /
spin_lock_bh ( & adapter - > cloud_filter_list_lock ) ;
list_for_each_entry_safe ( cf , cftmp , & adapter - > cloud_filter_list ,
list ) {
if ( cf - > add ) {
list_del ( & cf - > list ) ;
kfree ( cf ) ;
adapter - > num_cloud_filters - - ;
} else {
cf - > del = true ;
}
}
spin_unlock_bh ( & adapter - > cloud_filter_list_lock ) ;
}
/ * *
* iavf_clear_fdir_filters - Remove fdir filters not sent to PF yet and mark
* other to be removed .
* @ adapter : board private structure
* * /
static void iavf_clear_fdir_filters ( struct iavf_adapter * adapter )
{
struct iavf_fdir_fltr * fdir ;
/ * remove all Flow Director filters * /
spin_lock_bh ( & adapter - > fdir_fltr_lock ) ;
list_for_each_entry ( fdir , & adapter - > fdir_list_head , list ) {
if ( fdir - > state = = IAVF_FDIR_FLTR_ADD_REQUEST ) {
/ * Cancel a request , keep filter as inactive * /
fdir - > state = IAVF_FDIR_FLTR_INACTIVE ;
} else if ( fdir - > state = = IAVF_FDIR_FLTR_ADD_PENDING | |
fdir - > state = = IAVF_FDIR_FLTR_ACTIVE ) {
/ * Disable filters which are active or have a pending
* request to PF to be added
* /
fdir - > state = IAVF_FDIR_FLTR_DIS_REQUEST ;
}
}
spin_unlock_bh ( & adapter - > fdir_fltr_lock ) ;
}
/ * *
* iavf_clear_adv_rss_conf - Remove adv rss conf not sent to PF yet and mark
* other to be removed .
* @ adapter : board private structure
* * /
static void iavf_clear_adv_rss_conf ( struct iavf_adapter * adapter )
{
struct iavf_adv_rss * rss , * rsstmp ;
/ * remove all advance RSS configuration * /
spin_lock_bh ( & adapter - > adv_rss_lock ) ;
list_for_each_entry_safe ( rss , rsstmp , & adapter - > adv_rss_list_head ,
list ) {
if ( rss - > state = = IAVF_ADV_RSS_ADD_REQUEST ) {
list_del ( & rss - > list ) ;
kfree ( rss ) ;
} else {
rss - > state = IAVF_ADV_RSS_DEL_REQUEST ;
}
}
spin_unlock_bh ( & adapter - > adv_rss_lock ) ;
}
/ * *
* iavf_down - Shutdown the connection processing
* @ adapter : board private structure
* /
void iavf_down ( struct iavf_adapter * adapter )
{
struct net_device * netdev = adapter - > netdev ;
netdev_assert_locked ( netdev ) ;
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 ) ;
iavf_clear_mac_vlan_filters ( adapter ) ;
iavf_clear_cloud_filters ( adapter ) ;
iavf_clear_fdir_filters ( adapter ) ;
iavf_clear_adv_rss_conf ( adapter ) ;
if ( adapter - > flags & IAVF_FLAG_PF_COMMS_FAILED )
return ;
if ( ! test_bit ( _ _ IAVF_IN_REMOVE_TASK , & adapter - > crit_section ) ) {
/ * 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 .
* /
if ( ! list_empty ( & adapter - > mac_filter_list ) )
adapter - > aq_required | = IAVF_FLAG_AQ_DEL_MAC_FILTER ;
if ( ! list_empty ( & adapter - > vlan_filter_list ) )
adapter - > aq_required | = IAVF_FLAG_AQ_DEL_VLAN_FILTER ;
if ( ! list_empty ( & adapter - > cloud_filter_list ) )
adapter - > aq_required | = IAVF_FLAG_AQ_DEL_CLOUD_FILTER ;
if ( ! list_empty ( & adapter - > fdir_list_head ) )
adapter - > aq_required | = IAVF_FLAG_AQ_DEL_FDIR_FILTER ;
if ( ! list_empty ( & adapter - > adv_rss_list_head ) )
adapter - > aq_required | = IAVF_FLAG_AQ_DEL_ADV_RSS_CFG ;
}
iavf_schedule_aq_request ( adapter , IAVF_FLAG_AQ_DISABLE_QUEUES ) ;
}
/ * *
* 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_set_queue_vlan_tag_loc - set location for VLAN tag offload
* @ adapter : board private structure
*
* Based on negotiated capabilities , the VLAN tag needs to be inserted and / or
* stripped in certain descriptor fields . Instead of checking the offload
* capability bits in the hot path , cache the location the ring specific
* flags .
* /
void iavf_set_queue_vlan_tag_loc ( struct iavf_adapter * adapter )
{
int i ;
for ( i = 0 ; i < adapter - > num_active_queues ; i + + ) {
struct iavf_ring * tx_ring = & adapter - > tx_rings [ i ] ;
struct iavf_ring * rx_ring = & adapter - > rx_rings [ i ] ;
/ * prevent multiple L2TAG bits being set after VFR * /
tx_ring - > flags & =
~ ( IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2 ) ;
rx_ring - > flags & =
~ ( IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2 ) ;
if ( VLAN_ALLOWED ( adapter ) ) {
tx_ring - > flags | = IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 ;
rx_ring - > flags | = IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 ;
} else if ( VLAN_V2_ALLOWED ( adapter ) ) {
struct virtchnl_vlan_supported_caps * stripping_support ;
struct virtchnl_vlan_supported_caps * insertion_support ;
stripping_support =
& adapter - > vlan_v2_caps . offloads . stripping_support ;
insertion_support =
& adapter - > vlan_v2_caps . offloads . insertion_support ;
if ( stripping_support - > outer ) {
if ( stripping_support - > outer &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 )
rx_ring - > flags | =
IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 ;
else if ( stripping_support - > outer &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2 )
rx_ring - > flags | =
IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2 ;
} else if ( stripping_support - > inner ) {
if ( stripping_support - > inner &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 )
rx_ring - > flags | =
IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 ;
else if ( stripping_support - > inner &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2 )
rx_ring - > flags | =
IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2 ;
}
if ( insertion_support - > outer ) {
if ( insertion_support - > outer &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 )
tx_ring - > flags | =
IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 ;
else if ( insertion_support - > outer &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2 )
tx_ring - > flags | =
IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2 ;
} else if ( insertion_support - > inner ) {
if ( insertion_support - > inner &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 )
tx_ring - > flags | =
IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 ;
else if ( insertion_support - > inner &
VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2 )
tx_ring - > flags | =
IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2 ;
}
}
}
}
/ * *
* 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 - > count = adapter - > rx_desc_count ;
rx_ring - > itr_setting = IAVF_ITR_RX_DEF ;
}
adapter - > num_active_queues = num_active_queues ;
iavf_set_queue_vlan_tag_loc ( adapter ) ;
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 ) ;
if ( ! err )
iavf_schedule_finish_config ( adapter ) ;
out :
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 ;
enum iavf_status status ;
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 ;
}
status = iavf_aq_set_rss_key ( hw , adapter - > vsi . id , rss_key ) ;
if ( status ) {
dev_err ( & adapter - > pdev - > dev , " Cannot set RSS key , err % s aq_err % s \ n " ,
iavf_stat_str ( hw , status ) ,
libie_aq_str ( hw - > aq . asq_last_status ) ) ;
return iavf_status_to_errno ( status ) ;
}
status = iavf_aq_set_rss_lut ( hw , adapter - > vsi . id , false ,
adapter - > rss_lut , adapter - > rss_lut_size ) ;
if ( status ) {
dev_err ( & adapter - > pdev - > dev , " Cannot set RSS lut , err % s aq_err % s \ n " ,
iavf_stat_str ( hw , status ) ,
libie_aq_str ( hw - > aq . asq_last_status ) ) ;
return iavf_status_to_errno ( status ) ;
}
return 0 ;
}
/ * *
* 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 ;
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 - > rss_hashcfg =
IAVF_DEFAULT_RSS_HASHCFG_EXPANDED ;
else
adapter - > rss_hashcfg = IAVF_DEFAULT_RSS_HASHCFG ;
wr32 ( hw , IAVF_VFQF_HENA ( 0 ) , ( u32 ) adapter - > rss_hashcfg ) ;
wr32 ( hw , IAVF_VFQF_HENA ( 1 ) , ( u32 ) ( adapter - > rss_hashcfg > > 32 ) ) ;
}
iavf_fill_rss_lut ( adapter ) ;
netdev_rss_key_fill ( ( void * ) adapter - > rss_key , adapter - > rss_key_size ) ;
return iavf_config_rss ( adapter ) ;
}
/ * *
* 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 , irq_num ;
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 + + ) {
irq_num = adapter - > msix_entries [ q_idx + NONQ_VECS ] . vector ;
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 ;
netif_napi_add_config_locked ( adapter - > netdev , & q_vector - > napi ,
iavf_napi_poll , q_idx ) ;
netif_napi_set_irq_locked ( & q_vector - > napi , irq_num ) ;
}
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 ;
if ( ! adapter - > q_vectors )
return ;
num_q_vectors = adapter - > num_msix_vectors - NONQ_VECS ;
for ( q_idx = 0 ; q_idx < num_q_vectors ; q_idx + + ) {
struct iavf_q_vector * q_vector = & adapter - > q_vectors [ q_idx ] ;
netif_napi_del_locked ( & q_vector - > napi ) ;
}
kfree ( adapter - > q_vectors ) ;
adapter - > q_vectors = NULL ;
}
/ * *
* iavf_reset_interrupt_capability - Reset MSIX setup
* @ adapter : board private structure
*
* * /
static 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
*
* * /
static 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 ;
}
err = iavf_set_interrupt_capability ( adapter ) ;
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_interrupt_scheme - Undo what iavf_init_interrupt_scheme does
* @ adapter : board private structure
* * /
static void iavf_free_interrupt_scheme ( struct iavf_adapter * adapter )
{
iavf_free_q_vectors ( adapter ) ;
iavf_reset_interrupt_capability ( adapter ) ;
iavf_free_queues ( adapter ) ;
}
/ * *
* 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
* @ running : true if adapter - > state = = _ _ IAVF_RUNNING
*
* Returns 0 on success , negative on failure
* * /
static int iavf_reinit_interrupt_scheme ( struct iavf_adapter * adapter , bool running )
{
struct net_device * netdev = adapter - > netdev ;
int err ;
if ( running )
iavf_free_traffic_irqs ( adapter ) ;
iavf_free_misc_irq ( adapter ) ;
iavf_free_interrupt_scheme ( 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_finish_config - do all netdev work that needs RTNL
* @ work : our work_struct
*
* Do work that needs RTNL .
* /
static void iavf_finish_config ( struct work_struct * work )
{
struct iavf_adapter * adapter ;
bool netdev_released = false ;
int pairs , err ;
adapter = container_of ( work , struct iavf_adapter , finish_config ) ;
/ * Always take RTNL first to prevent circular lock dependency ;
* the dev - > lock ( = = netdev lock ) is needed to update the queue number .
* /
rtnl_lock ( ) ;
netdev_lock ( adapter - > netdev ) ;
if ( ( adapter - > flags & IAVF_FLAG_SETUP_NETDEV_FEATURES ) & &
adapter - > netdev - > reg_state = = NETREG_REGISTERED & &
! test_bit ( _ _ IAVF_IN_REMOVE_TASK , & adapter - > crit_section ) ) {
netdev_update_features ( adapter - > netdev ) ;
adapter - > flags & = ~ IAVF_FLAG_SETUP_NETDEV_FEATURES ;
}
switch ( adapter - > state ) {
case _ _ IAVF_DOWN :
/ * Set the real number of queues when reset occurs while
* state = = _ _ IAVF_DOWN
* /
pairs = adapter - > num_active_queues ;
netif_set_real_num_rx_queues ( adapter - > netdev , pairs ) ;
netif_set_real_num_tx_queues ( adapter - > netdev , pairs ) ;
if ( adapter - > netdev - > reg_state ! = NETREG_REGISTERED ) {
netdev_unlock ( adapter - > netdev ) ;
netdev_released = true ;
err = register_netdevice ( adapter - > netdev ) ;
if ( err ) {
dev_err ( & adapter - > pdev - > dev , " Unable to register netdev ( % d ) \ n " ,
err ) ;
/ * go back and try again . * /
netdev_lock ( adapter - > netdev ) ;
iavf_free_rss ( adapter ) ;
iavf_free_misc_irq ( adapter ) ;
iavf_reset_interrupt_capability ( adapter ) ;
iavf_change_state ( adapter ,
_ _ IAVF_INIT_CONFIG_ADAPTER ) ;
netdev_unlock ( adapter - > netdev ) ;
goto out ;
}
}
break ;
case _ _ IAVF_RUNNING :
pairs = adapter - > num_active_queues ;
netif_set_real_num_rx_queues ( adapter - > netdev , pairs ) ;
netif_set_real_num_tx_queues ( adapter - > netdev , pairs ) ;
break ;
default :
break ;
}
out :
if ( ! netdev_released )
netdev_unlock ( adapter - > netdev ) ;
rtnl_unlock ( ) ;
}
/ * *
* iavf_schedule_finish_config - Set the flags and schedule a reset event
* @ adapter : board private structure
* * /
void iavf_schedule_finish_config ( struct iavf_adapter * adapter )
{
if ( ! test_bit ( _ _ IAVF_IN_REMOVE_TASK , & adapter - > crit_section ) )
queue_work ( adapter - > wq , & adapter - > finish_config ) ;
}
/ * *
* 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_GET_OFFLOAD_VLAN_V2_CAPS )
return iavf_send_vf_offload_vlan_v2_msg ( adapter ) ;
if ( adapter - > aq_required & IAVF_FLAG_AQ_GET_SUPPORTED_RXDIDS )
return iavf_send_vf_supported_rxdids_msg ( adapter ) ;
if ( adapter - > aq_required & IAVF_FLAG_AQ_GET_PTP_CAPS )
return iavf_send_vf_ptp_caps_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_BW ) {
iavf_cfg_queues_bw ( adapter ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_GET_QOS_CAPS ) {
iavf_get_qos_caps ( adapter ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_CFG_QUEUES_QUANTA_SIZE ) {
iavf_cfg_queues_quanta_size ( 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_RSS_HASHCFG ) {
iavf_get_rss_hashcfg ( adapter ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_SET_RSS_HASHCFG ) {
iavf_set_rss_hashcfg ( 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_SET_RSS_HFUNC ) {
iavf_set_rss_hfunc ( adapter ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE ) {
iavf_set_promiscuous ( adapter ) ;
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_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 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING ) {
iavf_disable_vlan_stripping_v2 ( adapter , ETH_P_8021Q ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING ) {
iavf_disable_vlan_stripping_v2 ( adapter , ETH_P_8021AD ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING ) {
iavf_enable_vlan_stripping_v2 ( adapter , ETH_P_8021Q ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING ) {
iavf_enable_vlan_stripping_v2 ( adapter , ETH_P_8021AD ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION ) {
iavf_disable_vlan_insertion_v2 ( adapter , ETH_P_8021Q ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION ) {
iavf_disable_vlan_insertion_v2 ( adapter , ETH_P_8021AD ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION ) {
iavf_enable_vlan_insertion_v2 ( adapter , ETH_P_8021Q ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION ) {
iavf_enable_vlan_insertion_v2 ( adapter , ETH_P_8021AD ) ;
return 0 ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_SEND_PTP_CMD ) {
iavf_virtchnl_send_ptp_cmd ( adapter ) ;
return IAVF_SUCCESS ;
}
if ( adapter - > aq_required & IAVF_FLAG_AQ_REQUEST_STATS ) {
iavf_request_stats ( adapter ) ;
return 0 ;
}
return - EAGAIN ;
}
/ * *
* iavf_set_vlan_offload_features - set VLAN offload configuration
* @ adapter : board private structure
* @ prev_features : previous features used for comparison
* @ features : updated features used for configuration
*
* Set the aq_required bit ( s ) based on the requested features passed in to
* configure VLAN stripping and / or VLAN insertion if supported . Also , schedule
* the watchdog if any changes are requested to expedite the request via
* virtchnl .
* * /
static void
iavf_set_vlan_offload_features ( struct iavf_adapter * adapter ,
netdev_features_t prev_features ,
netdev_features_t features )
{
bool enable_stripping = true , enable_insertion = true ;
u16 vlan_ethertype = 0 ;
u64 aq_required = 0 ;
/ * keep cases separate because one ethertype for offloads can be
* disabled at the same time as another is disabled , so check for an
* enabled ethertype first , then check for disabled . Default to
* ETH_P_8021Q so an ethertype is specified if disabling insertion and
* stripping .
* /
if ( features & ( NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX ) )
vlan_ethertype = ETH_P_8021AD ;
else if ( features & ( NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX ) )
vlan_ethertype = ETH_P_8021Q ;
else if ( prev_features & ( NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX ) )
vlan_ethertype = ETH_P_8021AD ;
else if ( prev_features & ( NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX ) )
vlan_ethertype = ETH_P_8021Q ;
else
vlan_ethertype = ETH_P_8021Q ;
if ( ! ( features & ( NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX ) ) )
enable_stripping = false ;
if ( ! ( features & ( NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX ) ) )
enable_insertion = false ;
if ( VLAN_ALLOWED ( adapter ) ) {
/ * VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN
* stripping via virtchnl . VLAN insertion can be toggled on the
* netdev , but it doesn ' t require a virtchnl message
* /
if ( enable_stripping )
aq_required | = IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING ;
else
aq_required | = IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING ;
} else if ( VLAN_V2_ALLOWED ( adapter ) ) {
switch ( vlan_ethertype ) {
case ETH_P_8021Q :
if ( enable_stripping )
aq_required | = IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING ;
else
aq_required | = IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING ;
if ( enable_insertion )
aq_required | = IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION ;
else
aq_required | = IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION ;
break ;
case ETH_P_8021AD :
if ( enable_stripping )
aq_required | = IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING ;
else
aq_required | = IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING ;
if ( enable_insertion )
aq_required | = IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION ;
else
aq_required | = IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION ;
break ;
}
}
if ( aq_required )
iavf_schedule_aq_request ( adapter , aq_required ) ;
}
/ * *
* 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 ;
enum iavf_status status ;
int ret ;
WARN_ON ( adapter - > state ! = _ _ IAVF_STARTUP ) ;
/ * driver loaded , probe complete * /
adapter - > flags & = ~ IAVF_FLAG_PF_COMMS_FAILED ;
adapter - > flags & = ~ IAVF_FLAG_RESET_PENDING ;
ret = iavf_check_reset_complete ( hw ) ;
if ( ret ) {
dev_info ( & pdev - > dev , " Device is still in reset ( % d ) , retrying \ n " ,
ret ) ;
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 ;
status = iavf_init_adminq ( hw ) ;
if ( status ) {
dev_err ( & pdev - > dev , " Failed to init Admin Queue ( % d ) \ n " ,
status ) ;
goto err ;
}
ret = iavf_send_api_ver ( adapter ) ;
if ( ret ) {
dev_err ( & pdev - > dev , " Unable to send to PF ( % d ) \ n " , ret ) ;
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 = = - EALREADY )
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_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES
* @ adapter : board private structure
* /
int iavf_parse_vf_resource_msg ( struct iavf_adapter * adapter )
{
int i , num_req_queues = adapter - > num_req_queues ;
struct iavf_vsi * vsi = & adapter - > vsi ;
for ( i = 0 ; i < adapter - > vf_res - > num_vsis ; i + + ) {
if ( adapter - > vf_res - > vsi_res [ i ] . vsi_type = = VIRTCHNL_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 ( num_req_queues & &
num_req_queues > adapter - > vsi_res - > num_queue_pairs ) {
/ * Problem . The PF gave us fewer queues than what we had
* negotiated in our request . Need a reset to see if we can ' t
* get back to a working state .
* /
dev_err ( & adapter - > pdev - > dev ,
" Requested % d queues , but PF only gave us % d . \ n " ,
num_req_queues ,
adapter - > vsi_res - > num_queue_pairs ) ;
adapter - > flags | = IAVF_FLAG_REINIT_MSIX_NEEDED ;
adapter - > num_req_queues = adapter - > vsi_res - > num_queue_pairs ;
iavf_schedule_reset ( adapter , IAVF_FLAG_RESET_NEEDED ) ;
return - EAGAIN ;
}
adapter - > num_req_queues = 0 ;
adapter - > vsi . id = adapter - > vsi_res - > vsi_id ;
adapter - > vsi . back = adapter ;
adapter - > vsi . base_vector = 1 ;
vsi - > netdev = adapter - > netdev ;
vsi - > qs_handle = adapter - > vsi_res - > qset_handle ;
if ( adapter - > vf_res - > vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF ) {
adapter - > rss_key_size = adapter - > vf_res - > rss_key_size ;
adapter - > rss_lut_size = adapter - > vf_res - > rss_lut_size ;
} else {
adapter - > rss_key_size = IAVF_HKEY_ARRAY_SIZE ;
adapter - > rss_lut_size = IAVF_HLUT_ARRAY_SIZE ;
}
return 0 ;
}
/ * *
* 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 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 = = - EALREADY ) {
err = iavf_send_vf_config_msg ( adapter ) ;
goto err ;
} else if ( err = = - EINVAL ) {
/ * We only get - EINVAL 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_parse_vf_resource_msg ( adapter ) ;
if ( err ) {
dev_err ( & pdev - > dev , " Failed to parse VF resource message from PF ( % d ) \ n " ,
err ) ;
goto err_alloc ;
}
/ * Some features require additional messages to negotiate extended
* capabilities . These are processed in sequence by the
* _ _ IAVF_INIT_EXTENDED_CAPS driver state .
* /
adapter - > extended_caps = IAVF_EXTENDED_CAPS ;
iavf_change_state ( adapter , _ _ IAVF_INIT_EXTENDED_CAPS ) ;
return ;
err_alloc :
kfree ( adapter - > vf_res ) ;
adapter - > vf_res = NULL ;
err :
iavf_change_state ( adapter , _ _ IAVF_INIT_FAILED ) ;
}
/ * *
* iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps
* @ adapter : board private structure
*
* Function processes send of the extended VLAN V2 capability message to the
* PF . Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent ,
* e . g . due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2 .
* /
static void iavf_init_send_offload_vlan_v2_caps ( struct iavf_adapter * adapter )
{
int ret ;
WARN_ON ( ! ( adapter - > extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2 ) ) ;
ret = iavf_send_vf_offload_vlan_v2_msg ( adapter ) ;
if ( ret & & ret = = - EOPNOTSUPP ) {
/ * PF does not support VIRTCHNL_VF_OFFLOAD_V2 . In this case ,
* we did not send the capability exchange message and do not
* expect a response .
* /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_RECV_VLAN_V2 ;
}
/ * We sent the message , so move on to the next step * /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_SEND_VLAN_V2 ;
}
/ * *
* iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps
* @ adapter : board private structure
*
* Function processes receipt of the extended VLAN V2 capability message from
* the PF .
* * /
static void iavf_init_recv_offload_vlan_v2_caps ( struct iavf_adapter * adapter )
{
int ret ;
WARN_ON ( ! ( adapter - > extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2 ) ) ;
memset ( & adapter - > vlan_v2_caps , 0 , sizeof ( adapter - > vlan_v2_caps ) ) ;
ret = iavf_get_vf_vlan_v2_caps ( adapter ) ;
if ( ret )
goto err ;
/ * We ' ve processed receipt of the VLAN V2 caps message * /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_RECV_VLAN_V2 ;
return ;
err :
/ * We didn ' t receive a reply . Make sure we try sending again when
* _ _ IAVF_INIT_FAILED attempts to recover .
* /
adapter - > extended_caps | = IAVF_EXTENDED_CAP_SEND_VLAN_V2 ;
iavf_change_state ( adapter , _ _ IAVF_INIT_FAILED ) ;
}
/ * *
* iavf_init_send_supported_rxdids - part of querying for supported RXDID
* formats
* @ adapter : board private structure
*
* Function processes send of the request for supported RXDIDs to the PF .
* Must clear IAVF_EXTENDED_CAP_RECV_RXDID if the message is not sent , e . g .
* due to the PF not negotiating VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC .
* /
static void iavf_init_send_supported_rxdids ( struct iavf_adapter * adapter )
{
int ret ;
ret = iavf_send_vf_supported_rxdids_msg ( adapter ) ;
if ( ret = = - EOPNOTSUPP ) {
/ * PF does not support VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC . In this
* case , we did not send the capability exchange message and
* do not expect a response .
* /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_RECV_RXDID ;
}
/ * We sent the message , so move on to the next step * /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_SEND_RXDID ;
}
/ * *
* iavf_init_recv_supported_rxdids - part of querying for supported RXDID
* formats
* @ adapter : board private structure
*
* Function processes receipt of the supported RXDIDs message from the PF .
* * /
static void iavf_init_recv_supported_rxdids ( struct iavf_adapter * adapter )
{
int ret ;
memset ( & adapter - > supp_rxdids , 0 , sizeof ( adapter - > supp_rxdids ) ) ;
ret = iavf_get_vf_supported_rxdids ( adapter ) ;
if ( ret )
goto err ;
/ * We ' ve processed the PF response to the
* VIRTCHNL_OP_GET_SUPPORTED_RXDIDS message we sent previously .
* /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_RECV_RXDID ;
return ;
err :
/ * We didn ' t receive a reply . Make sure we try sending again when
* _ _ IAVF_INIT_FAILED attempts to recover .
* /
adapter - > extended_caps | = IAVF_EXTENDED_CAP_SEND_RXDID ;
iavf_change_state ( adapter , _ _ IAVF_INIT_FAILED ) ;
}
/ * *
* iavf_init_send_ptp_caps - part of querying for extended PTP capabilities
* @ adapter : board private structure
*
* Function processes send of the request for 1588 PTP capabilities to the PF .
* Must clear IAVF_EXTENDED_CAP_SEND_PTP if the message is not sent , e . g .
* due to the PF not negotiating VIRTCHNL_VF_PTP_CAP
* /
static void iavf_init_send_ptp_caps ( struct iavf_adapter * adapter )
{
if ( iavf_send_vf_ptp_caps_msg ( adapter ) = = - EOPNOTSUPP ) {
/ * PF does not support VIRTCHNL_VF_PTP_CAP . In this case , we
* did not send the capability exchange message and do not
* expect a response .
* /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_RECV_PTP ;
}
/ * We sent the message , so move on to the next step * /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_SEND_PTP ;
}
/ * *
* iavf_init_recv_ptp_caps - part of querying for supported PTP capabilities
* @ adapter : board private structure
*
* Function processes receipt of the PTP capabilities supported on this VF .
* * /
static void iavf_init_recv_ptp_caps ( struct iavf_adapter * adapter )
{
memset ( & adapter - > ptp . hw_caps , 0 , sizeof ( adapter - > ptp . hw_caps ) ) ;
if ( iavf_get_vf_ptp_caps ( adapter ) )
goto err ;
/ * We ' ve processed the PF response to the VIRTCHNL_OP_1588_PTP_GET_CAPS
* message we sent previously .
* /
adapter - > extended_caps & = ~ IAVF_EXTENDED_CAP_RECV_PTP ;
return ;
err :
/ * We didn ' t receive a reply . Make sure we try sending again when
* _ _ IAVF_INIT_FAILED attempts to recover .
* /
adapter - > extended_caps | = IAVF_EXTENDED_CAP_SEND_PTP ;
iavf_change_state ( adapter , _ _ IAVF_INIT_FAILED ) ;
}
/ * *
* iavf_init_process_extended_caps - Part of driver startup
* @ adapter : board private structure
*
* Function processes _ _ IAVF_INIT_EXTENDED_CAPS driver state . This state
* handles negotiating capabilities for features which require an additional
* message .
*
* Once all extended capabilities exchanges are finished , the driver will
* transition into _ _ IAVF_INIT_CONFIG_ADAPTER .
* /
static void iavf_init_process_extended_caps ( struct iavf_adapter * adapter )
{
WARN_ON ( adapter - > state ! = _ _ IAVF_INIT_EXTENDED_CAPS ) ;
/ * Process capability exchange for VLAN V2 * /
if ( adapter - > extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2 ) {
iavf_init_send_offload_vlan_v2_caps ( adapter ) ;
return ;
} else if ( adapter - > extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2 ) {
iavf_init_recv_offload_vlan_v2_caps ( adapter ) ;
return ;
}
/ * Process capability exchange for RXDID formats * /
if ( adapter - > extended_caps & IAVF_EXTENDED_CAP_SEND_RXDID ) {
iavf_init_send_supported_rxdids ( adapter ) ;
return ;
} else if ( adapter - > extended_caps & IAVF_EXTENDED_CAP_RECV_RXDID ) {
iavf_init_recv_supported_rxdids ( adapter ) ;
return ;
}
/ * Process capability exchange for PTP features * /
if ( adapter - > extended_caps & IAVF_EXTENDED_CAP_SEND_PTP ) {
iavf_init_send_ptp_caps ( adapter ) ;
return ;
} else if ( adapter - > extended_caps & IAVF_EXTENDED_CAP_RECV_PTP ) {
iavf_init_recv_ptp_caps ( adapter ) ;
return ;
}
/ * When we reach here , no further extended capabilities exchanges are
* necessary , so we finally transition into _ _ IAVF_INIT_CONFIG_ADAPTER
* /
iavf_change_state ( adapter , _ _ IAVF_INIT_CONFIG_ADAPTER ) ;
}
/ * *
* iavf_init_config_adapter - last part of driver startup
* @ adapter : board private structure
*
* After all the supported capabilities are negotiated , then the
* _ _ IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization .
* /
static void iavf_init_config_adapter ( struct iavf_adapter * adapter )
{
struct net_device * netdev = adapter - > netdev ;
struct pci_dev * pdev = adapter - > pdev ;
int err ;
WARN_ON ( adapter - > state ! = _ _ IAVF_INIT_CONFIG_ADAPTER ) ;
if ( iavf_process_config ( adapter ) )
goto err ;
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 ;
netdev - > min_mtu = ETH_MIN_MTU ;
netdev - > max_mtu = LIBIE_MAX_MTU ;
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 ;
netif_tx_stop_all_queues ( netdev ) ;
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 ) ;
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 ) ;
if ( VLAN_V2_ALLOWED ( adapter ) )
/ * request initial VLAN offload settings * /
iavf_set_vlan_offload_features ( adapter , 0 , netdev - > features ) ;
if ( QOS_ALLOWED ( adapter ) )
adapter - > aq_required | = IAVF_FLAG_AQ_GET_QOS_CAPS ;
/ * Setup initial PTP configuration * /
iavf_ptp_init ( adapter ) ;
iavf_schedule_finish_config ( adapter ) ;
return ;
err_mem :
iavf_free_rss ( adapter ) ;
iavf_free_misc_irq ( adapter ) ;
err_sw_init :
iavf_reset_interrupt_capability ( adapter ) ;
err :
iavf_change_state ( adapter , _ _ IAVF_INIT_FAILED ) ;
}
static const int IAVF_NO_RESCHED = - 1 ;
/ * return : msec delay for requeueing itself * /
static int iavf_watchdog_step ( struct iavf_adapter * adapter )
{
struct iavf_hw * hw = & adapter - > hw ;
u32 reg_val ;
netdev_assert_locked ( adapter - > netdev ) ;
if ( adapter - > flags & IAVF_FLAG_PF_COMMS_FAILED )
iavf_change_state ( adapter , _ _ IAVF_COMM_FAILED ) ;
switch ( adapter - > state ) {
case _ _ IAVF_STARTUP :
iavf_startup ( adapter ) ;
return 30 ;
case _ _ IAVF_INIT_VERSION_CHECK :
iavf_init_version_check ( adapter ) ;
return 30 ;
case _ _ IAVF_INIT_GET_RESOURCES :
iavf_init_get_resources ( adapter ) ;
return 1 ;
case _ _ IAVF_INIT_EXTENDED_CAPS :
iavf_init_process_extended_caps ( adapter ) ;
return 1 ;
case _ _ IAVF_INIT_CONFIG_ADAPTER :
iavf_init_config_adapter ( adapter ) ;
return 1 ;
case _ _ IAVF_INIT_FAILED :
if ( test_bit ( _ _ IAVF_IN_REMOVE_TASK ,
& adapter - > crit_section ) ) {
/ * Do not update the state and do not reschedule
* watchdog task , iavf_remove should handle this state
* as it can loop forever
* /
return IAVF_NO_RESCHED ;
}
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 ) ;
return 5000 ;
}
/ * Try again from failed step * /
iavf_change_state ( adapter , adapter - > last_state ) ;
return 1000 ;
case _ _ IAVF_COMM_FAILED :
if ( test_bit ( _ _ IAVF_IN_REMOVE_TASK ,
& adapter - > crit_section ) ) {
/ * Set state to _ _ IAVF_INIT_FAILED and perform remove
* steps . Remove IAVF_FLAG_PF_COMMS_FAILED so the task
* doesn ' t bring the state back to _ _ IAVF_COMM_FAILED .
* /
iavf_change_state ( adapter , _ _ IAVF_INIT_FAILED ) ;
adapter - > flags & = ~ IAVF_FLAG_PF_COMMS_FAILED ;
return IAVF_NO_RESCHED ;
}
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 ;
return 10 ;
case _ _ IAVF_RESETTING :
return 2000 ;
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 {
int ret = iavf_process_aq_command ( adapter ) ;
/ * An error will be returned if no commands were
* processed ; use this opportunity to update stats
* if the error isn ' t - ENOTSUPP
* /
if ( ret & & ret ! = - EOPNOTSUPP & &
adapter - > state = = _ _ IAVF_RUNNING )
iavf_request_stats ( adapter ) ;
}
if ( adapter - > state = = _ _ IAVF_RUNNING )
iavf_detect_recover_hung ( & adapter - > vsi ) ;
break ;
case _ _ IAVF_REMOVE :
default :
return IAVF_NO_RESCHED ;
}
/ * check for hw reset * /
reg_val = rd32 ( hw , IAVF_VF_ARQLEN1 ) & IAVF_VF_ARQLEN1_ARQENABLE_MASK ;
if ( ! reg_val ) {
adapter - > aq_required = 0 ;
adapter - > current_op = VIRTCHNL_OP_UNKNOWN ;
dev_err ( & adapter - > pdev - > dev , " Hardware reset detected \ n " ) ;
iavf_schedule_reset ( adapter , IAVF_FLAG_RESET_PENDING ) ;
}
return adapter - > aq_required ? 20 : 2000 ;
}
static void iavf_watchdog_task ( struct work_struct * work )
{
struct iavf_adapter * adapter = container_of ( work ,
struct iavf_adapter ,
watchdog_task . work ) ;
struct net_device * netdev = adapter - > netdev ;
int msec_delay ;
netdev_lock ( netdev ) ;
msec_delay = iavf_watchdog_step ( adapter ) ;
/ * note that we schedule a different task * /
if ( adapter - > state > = _ _ IAVF_DOWN )
queue_work ( adapter - > wq , & adapter - > adminq_task ) ;
if ( msec_delay ! = IAVF_NO_RESCHED )
queue_delayed_work ( adapter - > wq , & adapter - > watchdog_task ,
msecs_to_jiffies ( msec_delay ) ) ;
netdev_unlock ( netdev ) ;
}
/ * *
* iavf_disable_vf - disable VF
* @ adapter : board private structure
*
* Set communication failed flag and free all resources .
* /
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 ;
netdev_assert_locked ( adapter - > netdev ) ;
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 ) ;
}
adapter - > num_vlan_filters = 0 ;
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_free_interrupt_scheme ( adapter ) ;
memset ( adapter - > vf_res , 0 , IAVF_VIRTCHNL_VF_RESOURCE_SIZE ) ;
iavf_shutdown_adminq ( & adapter - > hw ) ;
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_reconfig_qs_bw - Call - back task to handle hardware reset
* @ adapter : board private structure
*
* After a reset , the shaper parameters of queues need to be replayed again .
* Since the net_shaper object inside TX rings persists across reset ,
* set the update flag for all queues so that the virtchnl message is triggered
* for all queues .
* * /
static void iavf_reconfig_qs_bw ( struct iavf_adapter * adapter )
{
int i , num = 0 ;
for ( i = 0 ; i < adapter - > num_active_queues ; i + + )
if ( adapter - > tx_rings [ i ] . q_shaper . bw_min | |
adapter - > tx_rings [ i ] . q_shaper . bw_max ) {
adapter - > tx_rings [ i ] . q_shaper_update = true ;
num + + ;
}
if ( num )
adapter - > aq_required | = IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW ;
}
/ * *
* 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_cloud_filter * cf ;
enum iavf_status status ;
u32 reg_val ;
int i = 0 , err ;
bool running ;
netdev_lock ( netdev ) ;
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 ) ;
pci_restore_msi_state ( 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 ) ;
netdev_unlock ( netdev ) ;
return ; / * Do not attempt to reinit . It ' s dead , Jim . * /
}
continue_reset :
/ * If we are still early in the state machine , just restart . * /
if ( adapter - > state < = _ _ IAVF_INIT_FAILED ) {
iavf_shutdown_adminq ( hw ) ;
iavf_change_state ( adapter , _ _ IAVF_STARTUP ) ;
iavf_startup ( adapter ) ;
queue_delayed_work ( adapter - > wq , & adapter - > watchdog_task ,
msecs_to_jiffies ( 30 ) ) ;
netdev_unlock ( netdev ) ;
return ;
}
/ * 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 ;
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 ;
status = iavf_init_adminq ( hw ) ;
if ( status ) {
dev_info ( & adapter - > pdev - > dev , " Failed to init adminq : % d \ n " ,
status ) ;
goto reset_err ;
}
adapter - > aq_required = 0 ;
if ( ( adapter - > flags & IAVF_FLAG_REINIT_MSIX_NEEDED ) | |
( adapter - > flags & IAVF_FLAG_REINIT_ITR_NEEDED ) ) {
err = iavf_reinit_interrupt_scheme ( adapter , running ) ;
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 ;
/ * Certain capabilities require an extended negotiation process using
* extra messages that must be processed after getting the VF
* configuration . The related checks such as VLAN_V2_ALLOWED ( ) are not
* reliable here , since the configuration has not yet been negotiated .
*
* Always set these flags , since them related VIRTCHNL messages won ' t
* be sent until after VIRTCHNL_OP_GET_VF_RESOURCES .
* /
adapter - > aq_required | = IAVF_FLAG_AQ_EXTENDED_CAPS ;
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 ;
}
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_CLOUD_FILTER ;
iavf_misc_irq_enable ( adapter ) ;
mod_delayed_work ( adapter - > 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_MSIX_NEEDED ) | |
( 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_MSIX_NEEDED ;
}
iavf_configure ( adapter ) ;
/ * iavf_up_complete ( ) will switch device back
* to _ _ IAVF_RUNNING
* /
iavf_up_complete ( adapter ) ;
iavf_irq_enable ( adapter , true ) ;
iavf_reconfig_qs_bw ( adapter ) ;
} else {
iavf_change_state ( adapter , _ _ IAVF_DOWN ) ;
wake_up ( & adapter - > down_waitqueue ) ;
}
adapter - > flags & = ~ IAVF_FLAG_REINIT_ITR_NEEDED ;
wake_up ( & adapter - > reset_waitqueue ) ;
netdev_unlock ( netdev ) ;
return ;
reset_err :
if ( running ) {
set_bit ( _ _ IAVF_VSI_DOWN , adapter - > vsi . state ) ;
iavf_free_traffic_irqs ( adapter ) ;
}
iavf_disable_vf ( adapter ) ;
netdev_unlock ( netdev ) ;
dev_err ( & adapter - > pdev - > dev , " failed to allocate resources during reinit \ n " ) ;
}
/**
* 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 net_device *netdev = adapter->netdev;
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;
netdev_lock(netdev);
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
goto unlock;
event.buf_len = IAVF_MAX_AQ_BUF_SIZE;
event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
if (!event.msg_buf)
goto unlock;
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);
if (iavf_is_reset_in_progress(adapter))
goto freedom;
/* check for error indications */
val = rd32(hw, IAVF_VF_ARQLEN1);
if (val == 0 xdeadbeef || val == 0 xffffffff) /* 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, IAVF_VF_ARQLEN1, val);
val = rd32(hw, IAVF_VF_ATQLEN1);
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, IAVF_VF_ATQLEN1, val);
freedom:
kfree(event.msg_buf);
unlock:
netdev_unlock(netdev);
/* re-enable Admin queue interrupt cause */
iavf_misc_irq_enable(adapter);
}
/**
* 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 ;
u32 tx_rate_rem = 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 for TC%d\n" ,
i);
return -EINVAL;
}
/* convert to Mbps */
tx_rate = div_u64(mqprio_qopt->max_rate[i],
IAVF_MBPS_DIVISOR);
if (mqprio_qopt->max_rate[i] &&
tx_rate < IAVF_MBPS_QUANTA) {
dev_err(&adapter->pdev->dev,
"Invalid max tx rate for TC%d, minimum %dMbps\n" ,
i, IAVF_MBPS_QUANTA);
return -EINVAL;
}
(void )div_u64_rem(tx_rate, IAVF_MBPS_QUANTA, &tx_rate_rem);
if (tx_rate_rem != 0 ) {
dev_err(&adapter->pdev->dev,
"Invalid max tx rate for TC%d, not divisible by %d\n" ,
i, IAVF_MBPS_QUANTA);
return -EINVAL;
}
total_max_rate += tx_rate;
num_qps += mqprio_qopt->qopt.count[i];
}
if (num_qps > adapter->num_active_queues) {
dev_err(&adapter->pdev->dev,
"Cannot support requested number of queues\n" );
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_is_tc_config_same - Compare the mqprio TC config with the
* TC config already configured on this adapter .
* @ adapter : board private structure
* @ mqprio_qopt : TC config received from kernel .
*
* This function compares the TC config received from the kernel
* with the config already configured on the adapter .
*
* Return : True if configuration is same , false otherwise .
**/
static bool iavf_is_tc_config_same(struct iavf_adapter *adapter,
struct tc_mqprio_qopt *mqprio_qopt)
{
struct virtchnl_channel_info *ch = &adapter->ch_config.ch_info[0 ];
int i;
if (adapter->num_tc != mqprio_qopt->num_tc)
return false ;
for (i = 0 ; i < adapter->num_tc; i++) {
if (ch[i].count != mqprio_qopt->count[i] ||
ch[i].offset != mqprio_qopt->offset[i])
return false ;
}
return true ;
}
/**
* _ _ 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;
total_qps = adapter->orig_num_active_queues;
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 (iavf_is_tc_config_same(adapter, &mqprio_qopt->qopt))
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 ;
}
}
/* Take snapshot of original config such as "num_active_queues"
* It is used later when delete ADQ flow is exercised , so that
* once delete ADQ flow completes , VF shall go back to its
* original queue configuration
*/
adapter->orig_num_active_queues = adapter->num_active_queues;
/* Store queue info based on TC so that VF gets configured
* with correct number of queues when VF completes ADQ config
* flow
*/
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 :
if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section))
return 0 ;
netif_set_real_num_rx_queues(netdev, total_qps);
netif_set_real_num_tx_queues(netdev, total_qps);
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_ULL(FLOW_DISSECTOR_KEY_CONTROL) |
BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) |
BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) |
BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%llx\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) {
n_proto_key = 0 ;
n_proto_mask = 0 ;
}
n_proto = n_proto_key & n_proto_mask;
if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6)
return -EINVAL;
if (n_proto == ETH_P_IPV6) {
/* specify flow type as TCP IPv6 */
vf->flow_type = VIRTCHNL_TCP_V6_FLOW;
}
if (match.key->ip_proto != IPPROTO_TCP) {
dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n" );
return -EINVAL;
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
struct flow_match_eth_addrs match;
flow_rule_match_eth_addrs(rule, &match);
/* use is_broadcast and is_zero to check for all 0xf or 0 */
if (!is_zero_ether_addr(match.mask->dst)) {
if (is_broadcast_ether_addr(match.mask->dst)) {
field_flags |= IAVF_CLOUD_FIELD_OMAC;
} else {
dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n" ,
match.mask->dst);
return -EINVAL;
}
}
if (!is_zero_ether_addr(match.mask->src)) {
if (is_broadcast_ether_addr(match.mask->src)) {
field_flags |= IAVF_CLOUD_FIELD_IMAC;
} else {
dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n" ,
match.mask->src);
return -EINVAL;
}
}
if (!is_zero_ether_addr(match.key->dst))
if (is_valid_ether_addr(match.key->dst) ||
is_multicast_ether_addr(match.key->dst)) {
/* set the mask if a valid dst_mac address */
for (i = 0 ; i < ETH_ALEN; i++)
vf->mask.tcp_spec.dst_mac[i] |= 0 xff;
ether_addr_copy(vf->data.tcp_spec.dst_mac,
match.key->dst);
}
if (!is_zero_ether_addr(match.key->src))
if (is_valid_ether_addr(match.key->src) ||
is_multicast_ether_addr(match.key->src)) {
/* set the mask if a valid dst_mac address */
for (i = 0 ; i < ETH_ALEN; i++)
vf->mask.tcp_spec.src_mac[i] |= 0 xff;
ether_addr_copy(vf->data.tcp_spec.src_mac,
match.key->src);
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
struct flow_match_vlan match;
flow_rule_match_vlan(rule, &match);
if (match.mask->vlan_id) {
if (match.mask->vlan_id == VLAN_VID_MASK) {
field_flags |= IAVF_CLOUD_FIELD_IVLAN;
} else {
dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n" ,
match.mask->vlan_id);
return -EINVAL;
}
}
vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0 xffff);
vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
struct flow_match_control match;
flow_rule_match_control(rule, &match);
addr_type = match.key->addr_type;
if (flow_rule_has_control_flags(match.mask->flags,
f->common.extack))
return -EOPNOTSUPP;
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
struct flow_match_ipv4_addrs match;
flow_rule_match_ipv4_addrs(rule, &match);
if (match.mask->dst) {
if (match.mask->dst == cpu_to_be32(0 xffffffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n" ,
be32_to_cpu(match.mask->dst));
return -EINVAL;
}
}
if (match.mask->src) {
if (match.mask->src == cpu_to_be32(0 xffffffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n" ,
be32_to_cpu(match.mask->src));
return -EINVAL;
}
}
if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) {
dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n" );
return -EINVAL;
}
if (match.key->dst) {
vf->mask.tcp_spec.dst_ip[0 ] |= cpu_to_be32(0 xffffffff);
vf->data.tcp_spec.dst_ip[0 ] = match.key->dst;
}
if (match.key->src) {
vf->mask.tcp_spec.src_ip[0 ] |= cpu_to_be32(0 xffffffff);
vf->data.tcp_spec.src_ip[0 ] = match.key->src;
}
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
struct flow_match_ipv6_addrs match;
flow_rule_match_ipv6_addrs(rule, &match);
/* validate mask, make sure it is not IPV6_ADDR_ANY */
if (ipv6_addr_any(&match.mask->dst)) {
dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n" ,
IPV6_ADDR_ANY);
return -EINVAL;
}
/* src and dest IPv6 address should not be LOOPBACK
* ( 0 : 0 : 0 : 0 : 0 : 0 : 0 : 1 ) which can be represented as : : 1
*/
if (ipv6_addr_loopback(&match.key->dst) ||
ipv6_addr_loopback(&match.key->src)) {
dev_err(&adapter->pdev->dev,
"ipv6 addr should not be loopback\n" );
return -EINVAL;
}
if (!ipv6_addr_any(&match.mask->dst) ||
!ipv6_addr_any(&match.mask->src))
field_flags |= IAVF_CLOUD_FIELD_IIP;
for (i = 0 ; i < 4 ; i++)
vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0 xffffffff);
memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32,
sizeof (vf->data.tcp_spec.dst_ip));
for (i = 0 ; i < 4 ; i++)
vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0 xffffffff);
memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32,
sizeof (vf->data.tcp_spec.src_ip));
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
struct flow_match_ports match;
flow_rule_match_ports(rule, &match);
if (match.mask->src) {
if (match.mask->src == cpu_to_be16(0 xffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad src port mask %u\n" ,
be16_to_cpu(match.mask->src));
return -EINVAL;
}
}
if (match.mask->dst) {
if (match.mask->dst == cpu_to_be16(0 xffff)) {
field_flags |= IAVF_CLOUD_FIELD_IIP;
} else {
dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n" ,
be16_to_cpu(match.mask->dst));
return -EINVAL;
}
}
if (match.key->dst) {
vf->mask.tcp_spec.dst_port |= cpu_to_be16(0 xffff);
vf->data.tcp_spec.dst_port = match.key->dst;
}
if (match.key->src) {
vf->mask.tcp_spec.src_port |= cpu_to_be16(0 xffff);
vf->data.tcp_spec.src_port = match.key->src;
}
}
vf->field_flags = field_flags;
return 0 ;
}
/**
* iavf_handle_tclass - Forward to a traffic class on the device
* @ adapter : board private structure
* @ tc : traffic class index on the device
* @ filter : pointer to cloud filter structure
*/
static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc,
struct iavf_cloud_filter *filter)
{
if (tc == 0 )
return 0 ;
if (tc < adapter->num_tc) {
if (!filter->f.data.tcp_spec.dst_port) {
dev_err(&adapter->pdev->dev,
"Specify destination port to redirect to traffic class other than TC0\n" );
return -EINVAL;
}
}
/* redirect to a traffic class on the same device */
filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT;
filter->f.action_meta = tc;
return 0 ;
}
/**
* iavf_find_cf - Find the cloud filter in the list
* @ adapter : Board private structure
* @ cookie : filter specific cookie
*
* Returns ptr to the filter object or NULL . Must be called while holding the
* cloud_filter_list_lock .
*/
static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter,
unsigned long *cookie)
{
struct iavf_cloud_filter *filter = NULL;
if (!cookie)
return NULL;
list_for_each_entry(filter, &adapter->cloud_filter_list, list) {
if (!memcmp(cookie, &filter->cookie, sizeof (filter->cookie)))
return filter;
}
return NULL;
}
/**
* iavf_configure_clsflower - Add tc flower filters
* @ adapter : board private structure
* @ cls_flower : Pointer to struct flow_cls_offload
*/
static int iavf_configure_clsflower(struct iavf_adapter *adapter,
struct flow_cls_offload *cls_flower)
{
int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid);
struct iavf_cloud_filter *filter;
int err;
if (tc < 0 ) {
dev_err(&adapter->pdev->dev, "Invalid traffic class\n" );
return -EINVAL;
}
filter = kzalloc(sizeof (*filter), GFP_KERNEL);
if (!filter)
return -ENOMEM;
filter->cookie = cls_flower->cookie;
netdev_lock(adapter->netdev);
/* bail out here if filter already exists */
spin_lock_bh(&adapter->cloud_filter_list_lock);
if (iavf_find_cf(adapter, &cls_flower->cookie)) {
dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n" );
err = -EEXIST;
goto spin_unlock;
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
/* set the mask to all zeroes to begin with */
memset(&filter->f.mask.tcp_spec, 0 , sizeof (struct virtchnl_l4_spec));
/* start out with flow type and eth type IPv4 to begin with */
filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW;
err = iavf_parse_cls_flower(adapter, cls_flower, filter);
if (err)
goto err;
err = iavf_handle_tclass(adapter, tc, filter);
if (err)
goto err;
/* add filter to the list */
spin_lock_bh(&adapter->cloud_filter_list_lock);
list_add_tail(&filter->list, &adapter->cloud_filter_list);
adapter->num_cloud_filters++;
filter->add = true ;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
spin_unlock:
spin_unlock_bh(&adapter->cloud_filter_list_lock);
err:
if (err)
kfree(filter);
netdev_unlock(adapter->netdev);
return err;
}
/**
* iavf_delete_clsflower - Remove tc flower filters
* @ adapter : board private structure
* @ cls_flower : Pointer to struct flow_cls_offload
*/
static int iavf_delete_clsflower(struct iavf_adapter *adapter,
struct flow_cls_offload *cls_flower)
{
struct iavf_cloud_filter *filter = NULL;
int err = 0 ;
spin_lock_bh(&adapter->cloud_filter_list_lock);
filter = iavf_find_cf(adapter, &cls_flower->cookie);
if (filter) {
filter->del = true ;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
} else {
err = -EINVAL;
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
return err;
}
/**
* iavf_setup_tc_cls_flower - flower classifier offloads
* @ adapter : pointer to iavf adapter structure
* @ cls_flower : pointer to flow_cls_offload struct with flow info
*/
static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter,
struct flow_cls_offload *cls_flower)
{
switch (cls_flower->command) {
case FLOW_CLS_REPLACE:
return iavf_configure_clsflower(adapter, cls_flower);
case FLOW_CLS_DESTROY:
return iavf_delete_clsflower(adapter, cls_flower);
case FLOW_CLS_STATS:
return -EOPNOTSUPP;
default :
return -EOPNOTSUPP;
}
}
/**
* iavf_add_cls_u32 - Add U32 classifier offloads
* @ adapter : pointer to iavf adapter structure
* @ cls_u32 : pointer to tc_cls_u32_offload struct with flow info
*
* Return : 0 on success or negative errno on failure .
*/
static int iavf_add_cls_u32(struct iavf_adapter *adapter,
struct tc_cls_u32_offload *cls_u32)
{
struct netlink_ext_ack *extack = cls_u32->common.extack;
struct virtchnl_fdir_rule *rule_cfg;
struct virtchnl_filter_action *vact;
struct virtchnl_proto_hdrs *hdrs;
struct ethhdr *spec_h, *mask_h;
const struct tc_action *act;
struct iavf_fdir_fltr *fltr;
struct tcf_exts *exts;
unsigned int q_index;
int i, status = 0 ;
int off_base = 0 ;
if (cls_u32->knode.link_handle) {
NL_SET_ERR_MSG_MOD(extack, "Linking not supported" );
return -EOPNOTSUPP;
}
fltr = kzalloc(sizeof (*fltr), GFP_KERNEL);
if (!fltr)
return -ENOMEM;
rule_cfg = &fltr->vc_add_msg.rule_cfg;
hdrs = &rule_cfg->proto_hdrs;
hdrs->count = 0 ;
/* The parser lib at the PF expects the packet starting with MAC hdr */
switch (ntohs(cls_u32->common.protocol)) {
case ETH_P_802_3:
break ;
case ETH_P_IP:
spec_h = (struct ethhdr *)hdrs->raw.spec;
mask_h = (struct ethhdr *)hdrs->raw.mask;
spec_h->h_proto = htons(ETH_P_IP);
mask_h->h_proto = htons(0 xFFFF);
off_base += ETH_HLEN;
break ;
default :
NL_SET_ERR_MSG_MOD(extack, "Only 802_3 and ip filter protocols are supported" );
status = -EOPNOTSUPP;
goto free_alloc;
}
for (i = 0 ; i < cls_u32->knode.sel->nkeys; i++) {
__be32 val, mask;
int off;
off = off_base + cls_u32->knode.sel->keys[i].off;
val = cls_u32->knode.sel->keys[i].val;
mask = cls_u32->knode.sel->keys[i].mask;
if (off >= sizeof (hdrs->raw.spec)) {
NL_SET_ERR_MSG_MOD(extack, "Input exceeds maximum allowed." );
status = -EINVAL;
goto free_alloc;
}
memcpy(&hdrs->raw.spec[off], &val, sizeof (val));
memcpy(&hdrs->raw.mask[off], &mask, sizeof (mask));
hdrs->raw.pkt_len = off + sizeof (val);
}
/* Only one action is allowed */
rule_cfg->action_set.count = 1 ;
vact = &rule_cfg->action_set.actions[0 ];
exts = cls_u32->knode.exts;
tcf_exts_for_each_action(i, act, exts) {
/* FDIR queue */
if (is_tcf_skbedit_rx_queue_mapping(act)) {
q_index = tcf_skbedit_rx_queue_mapping(act);
if (q_index >= adapter->num_active_queues) {
status = -EINVAL;
goto free_alloc;
}
vact->type = VIRTCHNL_ACTION_QUEUE;
vact->act_conf.queue.index = q_index;
break ;
}
/* Drop */
if (is_tcf_gact_shot(act)) {
vact->type = VIRTCHNL_ACTION_DROP;
break ;
}
/* Unsupported action */
NL_SET_ERR_MSG_MOD(extack, "Unsupported action." );
status = -EOPNOTSUPP;
goto free_alloc;
}
fltr->vc_add_msg.vsi_id = adapter->vsi.id;
fltr->cls_u32_handle = cls_u32->knode.handle;
return iavf_fdir_add_fltr(adapter, fltr);
free_alloc:
kfree(fltr);
return status;
}
/**
* iavf_del_cls_u32 - Delete U32 classifier offloads
* @ adapter : pointer to iavf adapter structure
* @ cls_u32 : pointer to tc_cls_u32_offload struct with flow info
*
* Return : 0 on success or negative errno on failure .
*/
static int iavf_del_cls_u32(struct iavf_adapter *adapter,
struct tc_cls_u32_offload *cls_u32)
{
return iavf_fdir_del_fltr(adapter, true , cls_u32->knode.handle);
}
/**
* iavf_setup_tc_cls_u32 - U32 filter offloads
* @ adapter : pointer to iavf adapter structure
* @ cls_u32 : pointer to tc_cls_u32_offload struct with flow info
*
* Return : 0 on success or negative errno on failure .
*/
static int iavf_setup_tc_cls_u32(struct iavf_adapter *adapter,
struct tc_cls_u32_offload *cls_u32)
{
if (!TC_U32_SUPPORT(adapter) || !FDIR_FLTR_SUPPORT(adapter))
return -EOPNOTSUPP;
switch (cls_u32->command) {
case TC_CLSU32_NEW_KNODE:
case TC_CLSU32_REPLACE_KNODE:
return iavf_add_cls_u32(adapter, cls_u32);
case TC_CLSU32_DELETE_KNODE:
return iavf_del_cls_u32(adapter, cls_u32);
default :
return -EOPNOTSUPP;
}
}
/**
* iavf_setup_tc_block_cb - block callback for tc
* @ type : type of offload
* @ type_data : offload data
* @ cb_priv :
*
* This function is the block callback for traffic classes
**/
static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
void *cb_priv)
{
struct iavf_adapter *adapter = cb_priv;
if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSFLOWER:
return iavf_setup_tc_cls_flower(cb_priv, type_data);
case TC_SETUP_CLSU32:
return iavf_setup_tc_cls_u32(cb_priv, type_data);
default :
return -EOPNOTSUPP;
}
}
static LIST_HEAD(iavf_block_cb_list);
/**
* iavf_setup_tc - configure multiple traffic classes
* @ netdev : network interface device structure
* @ type : type of offload
* @ type_data : tc offload data
*
* This function is the callback to ndo_setup_tc in the
* netdev_ops .
*
* Returns 0 on success
**/
static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type,
void *type_data)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
switch (type) {
case TC_SETUP_QDISC_MQPRIO:
return __iavf_setup_tc(netdev, type_data);
case TC_SETUP_BLOCK:
return flow_block_cb_setup_simple(type_data,
&iavf_block_cb_list,
iavf_setup_tc_block_cb,
adapter, adapter, true );
default :
return -EOPNOTSUPP;
}
}
/**
* iavf_restore_fdir_filters
* @ adapter : board private structure
*
* Restore existing FDIR filters when VF netdev comes back up .
**/
static void iavf_restore_fdir_filters(struct iavf_adapter *adapter)
{
struct iavf_fdir_fltr *f;
spin_lock_bh(&adapter->fdir_fltr_lock);
list_for_each_entry(f, &adapter->fdir_list_head, list) {
if (f->state == IAVF_FDIR_FLTR_DIS_REQUEST) {
/* Cancel a request, keep filter as active */
f->state = IAVF_FDIR_FLTR_ACTIVE;
} else if (f->state == IAVF_FDIR_FLTR_DIS_PENDING ||
f->state == IAVF_FDIR_FLTR_INACTIVE) {
/* Add filters which are inactive or have a pending
* request to PF to be deleted
*/
f->state = IAVF_FDIR_FLTR_ADD_REQUEST;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER;
}
}
spin_unlock_bh(&adapter->fdir_fltr_lock);
}
/**
* iavf_open - Called when a network interface is made active
* @ netdev : network interface device structure
*
* Returns 0 on success , negative value on failure
*
* The open entry point is called when a network interface is made
* active by the system ( IFF_UP ) . At this point all resources needed
* for transmit and receive operations are allocated , the interrupt
* handler is registered with the OS , the watchdog is started ,
* and the stack is notified that the interface is ready .
**/
static int iavf_open(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
int err;
netdev_assert_locked(netdev);
if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) {
dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n" );
return -EIO;
}
if (adapter->state != __IAVF_DOWN)
return -EBUSY;
if (adapter->state == __IAVF_RUNNING &&
!test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) {
dev_dbg(&adapter->pdev->dev, "VF is already open.\n" );
return 0 ;
}
/* allocate transmit descriptors */
err = iavf_setup_all_tx_resources(adapter);
if (err)
goto err_setup_tx;
/* allocate receive descriptors */
err = iavf_setup_all_rx_resources(adapter);
if (err)
goto err_setup_rx;
/* clear any pending interrupts, may auto mask */
err = iavf_request_traffic_irqs(adapter, netdev->name);
if (err)
goto err_req_irq;
spin_lock_bh(&adapter->mac_vlan_list_lock);
iavf_add_filter(adapter, adapter->hw.mac.addr);
spin_unlock_bh(&adapter->mac_vlan_list_lock);
/* Restore filters that were removed with IFF_DOWN */
iavf_restore_filters(adapter);
iavf_restore_fdir_filters(adapter);
iavf_configure(adapter);
iavf_up_complete(adapter);
iavf_irq_enable(adapter, true );
return 0 ;
err_req_irq:
iavf_down(adapter);
iavf_free_traffic_irqs(adapter);
err_setup_rx:
iavf_free_all_rx_resources(adapter);
err_setup_tx:
iavf_free_all_tx_resources(adapter);
return err;
}
/**
* iavf_close - Disables a network interface
* @ netdev : network interface device structure
*
* Returns 0 , this is not allowed to fail
*
* The close entry point is called when an interface is de - activated
* by the OS . The hardware is still under the drivers control , but
* needs to be disabled . All IRQs except vector 0 ( reserved for admin queue )
* are freed , along with all transmit and receive resources .
**/
static int iavf_close(struct net_device *netdev)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
u64 aq_to_restore;
int status;
netdev_assert_locked(netdev);
if (adapter->state <= __IAVF_DOWN_PENDING)
return 0 ;
set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
/* We cannot send IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS before
* IAVF_FLAG_AQ_DISABLE_QUEUES because in such case there is rtnl
* deadlock with adminq_task ( ) until iavf_close timeouts . We must send
* IAVF_FLAG_AQ_GET_CONFIG before IAVF_FLAG_AQ_DISABLE_QUEUES to make
* disable queues possible for vf . Give only necessary flags to
* iavf_down and save other to set them right before iavf_close ( )
* returns , when IAVF_FLAG_AQ_DISABLE_QUEUES will be already sent and
* iavf will be in DOWN state .
*/
aq_to_restore = adapter->aq_required;
adapter->aq_required &= IAVF_FLAG_AQ_GET_CONFIG;
/* Remove flags which we do not want to send after close or we want to
* send before disable queues .
*/
aq_to_restore &= ~(IAVF_FLAG_AQ_GET_CONFIG |
IAVF_FLAG_AQ_ENABLE_QUEUES |
IAVF_FLAG_AQ_CONFIGURE_QUEUES |
IAVF_FLAG_AQ_ADD_VLAN_FILTER |
IAVF_FLAG_AQ_ADD_MAC_FILTER |
IAVF_FLAG_AQ_ADD_CLOUD_FILTER |
IAVF_FLAG_AQ_ADD_FDIR_FILTER |
IAVF_FLAG_AQ_ADD_ADV_RSS_CFG);
iavf_down(adapter);
iavf_change_state(adapter, __IAVF_DOWN_PENDING);
iavf_free_traffic_irqs(adapter);
netdev_unlock(netdev);
/* We explicitly don't free resources here because the hardware is
* still active and can DMA into memory . Resources are cleared in
* iavf_virtchnl_completion ( ) after we get confirmation from the PF
* driver that the rings have been stopped .
*
* Also , we wait for state to transition to _ _ IAVF_DOWN before
* returning . State change occurs in iavf_virtchnl_completion ( ) after
* VF resources are released ( which occurs after PF driver processes and
* responds to admin queue commands ) .
*/
status = wait_event_timeout(adapter->down_waitqueue,
adapter->state == __IAVF_DOWN,
msecs_to_jiffies(500 ));
if (!status)
netdev_warn(netdev, "Device resources not yet released\n" );
netdev_lock(netdev);
adapter->aq_required |= aq_to_restore;
return 0 ;
}
/**
* iavf_change_mtu - Change the Maximum Transfer Unit
* @ netdev : network interface device structure
* @ new_mtu : new value for maximum frame size
*
* Returns 0 on success , negative on failure
**/
static int iavf_change_mtu(struct net_device *netdev, int new_mtu)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
int ret = 0 ;
netdev_dbg(netdev, "changing MTU from %d to %d\n" ,
netdev->mtu, new_mtu);
WRITE_ONCE(netdev->mtu, new_mtu);
if (netif_running(netdev)) {
iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
ret = iavf_wait_for_reset(adapter);
if (ret < 0 )
netdev_warn(netdev, "MTU change interrupted waiting for reset" );
else if (ret)
netdev_warn(netdev, "MTU change timed out waiting for reset" );
}
return ret;
}
/**
* iavf_disable_fdir - disable Flow Director and clear existing filters
* @ adapter : board private structure
**/
static void iavf_disable_fdir(struct iavf_adapter *adapter)
{
struct iavf_fdir_fltr *fdir, *fdirtmp;
bool del_filters = false ;
adapter->flags &= ~IAVF_FLAG_FDIR_ENABLED;
/* remove all Flow Director filters */
spin_lock_bh(&adapter->fdir_fltr_lock);
list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head,
list) {
if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST ||
fdir->state == IAVF_FDIR_FLTR_INACTIVE) {
/* Delete filters not registered in PF */
list_del(&fdir->list);
iavf_dec_fdir_active_fltr(adapter, fdir);
kfree(fdir);
} else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING ||
fdir->state == IAVF_FDIR_FLTR_DIS_REQUEST ||
fdir->state == IAVF_FDIR_FLTR_ACTIVE) {
/* Filters registered in PF, schedule their deletion */
fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST;
del_filters = true;
} else if (fdir->state == IAVF_FDIR_FLTR_DIS_PENDING) {
/* Request to delete filter already sent to PF, change
* state to DEL_PENDING to delete filter after PF's
* response, not set as INACTIVE
*/
fdir->state = IAVF_FDIR_FLTR_DEL_PENDING;
}
}
spin_unlock_bh(&adapter->fdir_fltr_lock);
if (del_filters) {
adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER;
mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0 );
}
}
#define NETIF_VLAN_OFFLOAD_FEATURES (NETIF_F_HW_VLAN_CTAG_RX | \
NETIF_F_HW_VLAN_CTAG_TX | \
NETIF_F_HW_VLAN_STAG_RX | \
NETIF_F_HW_VLAN_STAG_TX)
/**
* iavf_set_features - set the netdev feature flags
* @netdev: ptr to the netdev being adjusted
* @features: the feature set that the stack is suggesting
* Note: expects to be called while under rtnl_lock()
**/
static int iavf_set_features(struct net_device *netdev,
netdev_features_t features)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
/* trigger update on any VLAN feature change */
if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^
(features & NETIF_VLAN_OFFLOAD_FEATURES))
iavf_set_vlan_offload_features(adapter, netdev->features,
features);
if (CRC_OFFLOAD_ALLOWED(adapter) &&
((netdev->features & NETIF_F_RXFCS) ^ (features & NETIF_F_RXFCS)))
iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
if ((netdev->features & NETIF_F_NTUPLE) ^ (features & NETIF_F_NTUPLE)) {
if (features & NETIF_F_NTUPLE)
adapter->flags |= IAVF_FLAG_FDIR_ENABLED;
else
iavf_disable_fdir(adapter);
}
return 0 ;
}
/**
* iavf_features_check - Validate encapsulated packet conforms to limits
* @skb: skb buff
* @dev: This physical port's netdev
* @features: Offload features that the stack believes apply
**/
static netdev_features_t iavf_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
size_t len;
/* No point in doing any of this if neither checksum nor GSO are
* being requested for this frame. We can rule out both by just
* checking for CHECKSUM_PARTIAL
*/
if (skb->ip_summed != CHECKSUM_PARTIAL)
return features;
/* We cannot support GSO if the MSS is going to be less than
* 64 bytes. If it is then we need to drop support for GSO.
*/
if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64 ))
features &= ~NETIF_F_GSO_MASK;
/* MACLEN can support at most 63 words */
len = skb_network_offset(skb);
if (len & ~(63 * 2 ))
goto out_err;
/* IPLEN and EIPLEN can support at most 127 dwords */
len = skb_network_header_len(skb);
if (len & ~(127 * 4 ))
goto out_err;
if (skb->encapsulation) {
/* L4TUNLEN can support 127 words */
len = skb_inner_network_header(skb) - skb_transport_header(skb);
if (len & ~(127 * 2 ))
goto out_err;
/* IPLEN can support at most 127 dwords */
len = skb_inner_transport_header(skb) -
skb_inner_network_header(skb);
if (len & ~(127 * 4 ))
goto out_err;
}
/* No need to validate L4LEN as TCP is the only protocol with a
* flexible value and we support all possible values supported
* by TCP, which is at most 15 dwords
*/
return features;
out_err:
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
/**
* iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off
* @adapter: board private structure
*
* Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2
* were negotiated determine the VLAN features that can be toggled on and off.
**/
static netdev_features_t
iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter)
{
netdev_features_t hw_features = 0 ;
if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags)
return hw_features;
/* Enable VLAN features if supported */
if (VLAN_ALLOWED(adapter)) {
hw_features |= (NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX);
} else if (VLAN_V2_ALLOWED(adapter)) {
struct virtchnl_vlan_caps *vlan_v2_caps =
&adapter->vlan_v2_caps;
struct virtchnl_vlan_supported_caps *stripping_support =
&vlan_v2_caps->offloads.stripping_support;
struct virtchnl_vlan_supported_caps *insertion_support =
&vlan_v2_caps->offloads.insertion_support;
if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) {
if (stripping_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100)
hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
if (stripping_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8)
hw_features |= NETIF_F_HW_VLAN_STAG_RX;
} else if (stripping_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED &&
stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) {
if (stripping_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100)
hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
}
if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) {
if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100)
hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8)
hw_features |= NETIF_F_HW_VLAN_STAG_TX;
} else if (insertion_support->inner &&
insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) {
if (insertion_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100)
hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
}
}
if (CRC_OFFLOAD_ALLOWED(adapter))
hw_features |= NETIF_F_RXFCS;
return hw_features;
}
/**
* iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures
* @adapter: board private structure
*
* Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2
* were negotiated determine the VLAN features that are enabled by default.
**/
static netdev_features_t
iavf_get_netdev_vlan_features(struct iavf_adapter *adapter)
{
netdev_features_t features = 0 ;
if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags)
return features;
if (VLAN_ALLOWED(adapter)) {
features |= NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX;
} else if (VLAN_V2_ALLOWED(adapter)) {
struct virtchnl_vlan_caps *vlan_v2_caps =
&adapter->vlan_v2_caps;
struct virtchnl_vlan_supported_caps *filtering_support =
&vlan_v2_caps->filtering.filtering_support;
struct virtchnl_vlan_supported_caps *stripping_support =
&vlan_v2_caps->offloads.stripping_support;
struct virtchnl_vlan_supported_caps *insertion_support =
&vlan_v2_caps->offloads.insertion_support;
u32 ethertype_init;
/* give priority to outer stripping and don't support both outer
* and inner stripping
*/
ethertype_init = vlan_v2_caps->offloads.ethertype_init;
if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
if (stripping_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_RX;
else if (stripping_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_RX;
} else if (stripping_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED) {
if (stripping_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_RX;
}
/* give priority to outer insertion and don't support both outer
* and inner insertion
*/
if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_TX;
else if (insertion_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_TX;
} else if (insertion_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED) {
if (insertion_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_TX;
}
/* give priority to outer filtering and don't bother if both
* outer and inner filtering are enabled
*/
ethertype_init = vlan_v2_caps->filtering.ethertype_init;
if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
if (filtering_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_FILTER;
if (filtering_support->outer &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_FILTER;
} else if (filtering_support->inner !=
VIRTCHNL_VLAN_UNSUPPORTED) {
if (filtering_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_8100 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
features |= NETIF_F_HW_VLAN_CTAG_FILTER;
if (filtering_support->inner &
VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
features |= NETIF_F_HW_VLAN_STAG_FILTER;
}
}
return features;
}
#define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \
(!(((requested) & (feature_bit)) && \
!((allowed) & (feature_bit))))
/**
* iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support
* @adapter: board private structure
* @requested_features: stack requested NETDEV features
**/
static netdev_features_t
iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter,
netdev_features_t requested_features)
{
netdev_features_t allowed_features;
allowed_features = iavf_get_netdev_vlan_hw_features(adapter) |
iavf_get_netdev_vlan_features(adapter);
if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
allowed_features,
NETIF_F_HW_VLAN_CTAG_TX))
requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX;
if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
allowed_features,
NETIF_F_HW_VLAN_CTAG_RX))
requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
allowed_features,
NETIF_F_HW_VLAN_STAG_TX))
requested_features &= ~NETIF_F_HW_VLAN_STAG_TX;
if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
allowed_features,
NETIF_F_HW_VLAN_STAG_RX))
requested_features &= ~NETIF_F_HW_VLAN_STAG_RX;
if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
allowed_features,
NETIF_F_HW_VLAN_CTAG_FILTER))
requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
allowed_features,
NETIF_F_HW_VLAN_STAG_FILTER))
requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER;
if ((requested_features &
(NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) &&
(requested_features &
(NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) &&
adapter->vlan_v2_caps.offloads.ethertype_match ==
VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) {
netdev_warn(adapter->netdev, "cannot support CTAG and STAG VLAN stripping and/or insertion simultaneously since CTAG and STAG offloads are mutually exclusive, clearing STAG offload settings\n");
requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX |
NETIF_F_HW_VLAN_STAG_TX);
}
return requested_features;
}
/**
* iavf_fix_strip_features - fix NETDEV CRC and VLAN strip features
* @adapter: board private structure
* @requested_features: stack requested NETDEV features
*
* Returns fixed-up features bits
**/
static netdev_features_t
iavf_fix_strip_features(struct iavf_adapter *adapter,
netdev_features_t requested_features)
{
struct net_device *netdev = adapter->netdev;
bool crc_offload_req, is_vlan_strip;
netdev_features_t vlan_strip;
int num_non_zero_vlan;
crc_offload_req = CRC_OFFLOAD_ALLOWED(adapter) &&
(requested_features & NETIF_F_RXFCS);
num_non_zero_vlan = iavf_get_num_vlans_added(adapter);
vlan_strip = (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX);
is_vlan_strip = requested_features & vlan_strip;
if (!crc_offload_req)
return requested_features;
if (!num_non_zero_vlan && (netdev->features & vlan_strip) &&
!(netdev->features & NETIF_F_RXFCS) && is_vlan_strip) {
requested_features &= ~vlan_strip;
netdev_info(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n");
return requested_features;
}
if ((netdev->features & NETIF_F_RXFCS) && is_vlan_strip) {
requested_features &= ~vlan_strip;
if (!(netdev->features & vlan_strip))
netdev_info(netdev, "To enable VLAN stripping, first need to enable FCS/CRC stripping");
return requested_features;
}
if (num_non_zero_vlan && is_vlan_strip &&
!(netdev->features & NETIF_F_RXFCS)) {
requested_features &= ~NETIF_F_RXFCS;
netdev_info(netdev, "To disable FCS/CRC stripping, first need to disable VLAN stripping");
}
return requested_features;
}
/**
* iavf_fix_features - fix up the netdev feature bits
* @netdev: our net device
* @features: desired feature bits
*
* Returns fixed-up features bits
**/
static netdev_features_t iavf_fix_features(struct net_device *netdev,
netdev_features_t features)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
features = iavf_fix_netdev_vlan_features(adapter, features);
if (!FDIR_FLTR_SUPPORT(adapter))
features &= ~NETIF_F_NTUPLE;
return iavf_fix_strip_features(adapter, features);
}
static int iavf_hwstamp_get(struct net_device *netdev,
struct kernel_hwtstamp_config *config)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
*config = adapter->ptp.hwtstamp_config;
return 0 ;
}
static int iavf_hwstamp_set(struct net_device *netdev,
struct kernel_hwtstamp_config *config,
struct netlink_ext_ack *extack)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
return iavf_ptp_set_ts_config(adapter, config, extack);
}
static int
iavf_verify_shaper(struct net_shaper_binding *binding,
const struct net_shaper *shaper,
struct netlink_ext_ack *extack)
{
struct iavf_adapter *adapter = netdev_priv(binding->netdev);
u64 vf_max;
if (shaper->handle.scope == NET_SHAPER_SCOPE_QUEUE) {
vf_max = adapter->qos_caps->cap[0 ].shaper.peak;
if (vf_max && shaper->bw_max > vf_max) {
NL_SET_ERR_MSG_FMT(extack, "Max rate (%llu) of queue %d can't exceed max TX rate of VF (%llu kbps)",
shaper->bw_max, shaper->handle.id,
vf_max);
return -EINVAL;
}
}
return 0 ;
}
static int
iavf_shaper_set(struct net_shaper_binding *binding,
const struct net_shaper *shaper,
struct netlink_ext_ack *extack)
{
struct iavf_adapter *adapter = netdev_priv(binding->netdev);
const struct net_shaper_handle *handle = &shaper->handle;
struct iavf_ring *tx_ring;
int ret;
netdev_assert_locked(adapter->netdev);
if (handle->id >= adapter->num_active_queues)
return 0 ;
ret = iavf_verify_shaper(binding, shaper, extack);
if (ret)
return ret;
tx_ring = &adapter->tx_rings[handle->id];
tx_ring->q_shaper.bw_min = div_u64(shaper->bw_min, 1000 );
tx_ring->q_shaper.bw_max = div_u64(shaper->bw_max, 1000 );
tx_ring->q_shaper_update = true;
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW;
return 0 ;
}
static int iavf_shaper_del(struct net_shaper_binding *binding,
const struct net_shaper_handle *handle,
struct netlink_ext_ack *extack)
{
struct iavf_adapter *adapter = netdev_priv(binding->netdev);
struct iavf_ring *tx_ring;
netdev_assert_locked(adapter->netdev);
if (handle->id >= adapter->num_active_queues)
return 0 ;
tx_ring = &adapter->tx_rings[handle->id];
tx_ring->q_shaper.bw_min = 0 ;
tx_ring->q_shaper.bw_max = 0 ;
tx_ring->q_shaper_update = true;
adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW;
return 0 ;
}
static void iavf_shaper_cap(struct net_shaper_binding *binding,
enum net_shaper_scope scope,
unsigned long *flags)
{
if (scope != NET_SHAPER_SCOPE_QUEUE)
return;
*flags = BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MIN) |
BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MAX) |
BIT(NET_SHAPER_A_CAPS_SUPPORT_METRIC_BPS);
}
static const struct net_shaper_ops iavf_shaper_ops = {
.set = iavf_shaper_set,
.delete = iavf_shaper_del,
.capabilities = iavf_shaper_cap,
};
static const struct net_device_ops iavf_netdev_ops = {
.ndo_open = iavf_open,
.ndo_stop = iavf_close,
.ndo_start_xmit = iavf_xmit_frame,
.ndo_set_rx_mode = iavf_set_rx_mode,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = iavf_set_mac,
.ndo_change_mtu = iavf_change_mtu,
.ndo_tx_timeout = iavf_tx_timeout,
.ndo_vlan_rx_add_vid = iavf_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = iavf_vlan_rx_kill_vid,
.ndo_features_check = iavf_features_check,
.ndo_fix_features = iavf_fix_features,
.ndo_set_features = iavf_set_features,
.ndo_setup_tc = iavf_setup_tc,
.net_shaper_ops = &iavf_shaper_ops,
.ndo_hwtstamp_get = iavf_hwstamp_get,
.ndo_hwtstamp_set = iavf_hwstamp_set,
};
/**
* iavf_check_reset_complete - check that VF reset is complete
* @hw: pointer to hw struct
*
* Returns 0 if device is ready to use, or -EBUSY if it's in reset.
**/
static int iavf_check_reset_complete(struct iavf_hw *hw)
{
u32 rstat;
int i;
for (i = 0 ; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
rstat = rd32(hw, IAVF_VFGEN_RSTAT) &
IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
if ((rstat == VIRTCHNL_VFR_VFACTIVE) ||
(rstat == VIRTCHNL_VFR_COMPLETED))
return 0 ;
msleep(IAVF_RESET_WAIT_MS);
}
return -EBUSY;
}
/**
* iavf_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 iavf_process_config(struct iavf_adapter *adapter)
{
struct virtchnl_vf_resource *vfres = adapter->vf_res;
netdev_features_t hw_vlan_features, vlan_features;
struct net_device *netdev = adapter->netdev;
netdev_features_t hw_enc_features;
netdev_features_t hw_features;
hw_enc_features = NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM |
NETIF_F_HIGHDMA |
NETIF_F_SOFT_FEATURES |
NETIF_F_TSO |
NETIF_F_TSO_ECN |
NETIF_F_TSO6 |
NETIF_F_SCTP_CRC |
NETIF_F_RXHASH |
NETIF_F_RXCSUM |
0 ;
/* advertise to stack only if offloads for encapsulated packets is
* supported
*/
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) {
hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_GRE |
NETIF_F_GSO_GRE_CSUM |
NETIF_F_GSO_IPXIP4 |
NETIF_F_GSO_IPXIP6 |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL |
0 ;
if (!(vfres->vf_cap_flags &
VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
netdev->gso_partial_features |=
NETIF_F_GSO_UDP_TUNNEL_CSUM;
netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
netdev->hw_enc_features |= hw_enc_features;
}
/* record features VLANs can make use of */
netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
/* Write features and hw_features separately to avoid polluting
* with, or dropping, features that are set when we registered.
*/
hw_features = hw_enc_features;
/* get HW VLAN features that can be toggled */
hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter);
/* Enable HW TC offload if ADQ or tc U32 is supported */
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ ||
TC_U32_SUPPORT(adapter))
hw_features |= NETIF_F_HW_TC;
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO)
hw_features |= NETIF_F_GSO_UDP_L4;
netdev->hw_features |= hw_features | hw_vlan_features;
vlan_features = iavf_get_netdev_vlan_features(adapter);
netdev->features |= hw_features | vlan_features;
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN)
netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
if (FDIR_FLTR_SUPPORT(adapter)) {
netdev->hw_features |= NETIF_F_NTUPLE;
netdev->features |= NETIF_F_NTUPLE;
adapter->flags |= IAVF_FLAG_FDIR_ENABLED;
}
netdev->priv_flags |= IFF_UNICAST_FLT;
/* Do not turn on offloads when they are requested to be turned off.
* TSO needs minimum 576 bytes to work correctly.
*/
if (netdev->wanted_features) {
if (!(netdev->wanted_features & NETIF_F_TSO) ||
netdev->mtu < 576 )
netdev->features &= ~NETIF_F_TSO;
if (!(netdev->wanted_features & NETIF_F_TSO6) ||
netdev->mtu < 576 )
netdev->features &= ~NETIF_F_TSO6;
if (!(netdev->wanted_features & NETIF_F_TSO_ECN))
netdev->features &= ~NETIF_F_TSO_ECN;
if (!(netdev->wanted_features & NETIF_F_GRO))
netdev->features &= ~NETIF_F_GRO;
if (!(netdev->wanted_features & NETIF_F_GSO))
netdev->features &= ~NETIF_F_GSO;
}
return 0 ;
}
/**
* iavf_probe - Device Initialization Routine
* @pdev: PCI device information struct
* @ent: entry in iavf_pci_tbl
*
* Returns 0 on success, negative on failure
*
* iavf_probe initializes an adapter identified by a pci_dev structure.
* The OS initialization, configuring of the adapter private structure,
* and a hardware reset occur.
**/
static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct net_device *netdev;
struct iavf_adapter *adapter = NULL;
struct iavf_hw *hw = NULL;
int err, len;
err = pci_enable_device(pdev);
if (err)
return err;
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64 ));
if (err) {
dev_err(&pdev->dev,
"DMA configuration failed: 0 x%x\n", err);
goto err_dma;
}
err = pci_request_regions(pdev, iavf_driver_name);
if (err) {
dev_err(&pdev->dev,
"pci_request_regions failed 0 x%x\n", err);
goto err_pci_reg;
}
pci_set_master(pdev);
netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter),
IAVF_MAX_REQ_QUEUES);
if (!netdev) {
err = -ENOMEM;
goto err_alloc_etherdev;
}
netif_set_affinity_auto(netdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
adapter = netdev_priv(netdev);
adapter->netdev = netdev;
adapter->pdev = pdev;
hw = &adapter->hw;
hw->back = adapter;
adapter->wq = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM,
iavf_driver_name);
if (!adapter->wq) {
err = -ENOMEM;
goto err_alloc_wq;
}
adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1 ;
iavf_change_state(adapter, __IAVF_STARTUP);
/* Call save state here because it relies on the adapter struct. */
pci_save_state(pdev);
hw->hw_addr = ioremap(pci_resource_start(pdev, 0 ),
pci_resource_len(pdev, 0 ));
if (!hw->hw_addr) {
err = -EIO;
goto err_ioremap;
}
hw->vendor_id = pdev->vendor;
hw->device_id = pdev->device;
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_device_id = pdev->subsystem_device;
hw->bus.device = PCI_SLOT(pdev->devfn);
hw->bus.func = PCI_FUNC(pdev->devfn);
hw->bus.bus_id = pdev->bus->number;
len = struct_size(adapter->qos_caps, cap, IAVF_MAX_QOS_TC_NUM);
adapter->qos_caps = kzalloc(len, GFP_KERNEL);
if (!adapter->qos_caps) {
err = -ENOMEM;
goto err_alloc_qos_cap;
}
mutex_init(&hw->aq.asq_mutex);
mutex_init(&hw->aq.arq_mutex);
spin_lock_init(&adapter->mac_vlan_list_lock);
spin_lock_init(&adapter->cloud_filter_list_lock);
spin_lock_init(&adapter->fdir_fltr_lock);
spin_lock_init(&adapter->adv_rss_lock);
spin_lock_init(&adapter->current_netdev_promisc_flags_lock);
INIT_LIST_HEAD(&adapter->mac_filter_list);
INIT_LIST_HEAD(&adapter->vlan_filter_list);
INIT_LIST_HEAD(&adapter->cloud_filter_list);
INIT_LIST_HEAD(&adapter->fdir_list_head);
INIT_LIST_HEAD(&adapter->adv_rss_list_head);
INIT_WORK(&adapter->reset_task, iavf_reset_task);
INIT_WORK(&adapter->adminq_task, iavf_adminq_task);
INIT_WORK(&adapter->finish_config, iavf_finish_config);
INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task);
/* Setup the wait queue for indicating transition to down status */
init_waitqueue_head(&adapter->down_waitqueue);
/* Setup the wait queue for indicating transition to running state */
init_waitqueue_head(&adapter->reset_waitqueue);
/* Setup the wait queue for indicating virtchannel events */
init_waitqueue_head(&adapter->vc_waitqueue);
INIT_LIST_HEAD(&adapter->ptp.aq_cmds);
init_waitqueue_head(&adapter->ptp.phc_time_waitqueue);
mutex_init(&adapter->ptp.aq_cmd_lock);
queue_delayed_work(adapter->wq, &adapter->watchdog_task,
msecs_to_jiffies(5 * (pdev->devfn & 0 x07)));
/* Initialization goes on in the work. Do not add more of it below. */
return 0 ;
err_alloc_qos_cap:
iounmap(hw->hw_addr);
err_ioremap:
destroy_workqueue(adapter->wq);
err_alloc_wq:
free_netdev(netdev);
err_alloc_etherdev:
pci_release_regions(pdev);
err_pci_reg:
err_dma:
pci_disable_device(pdev);
return err;
}
/**
* iavf_suspend - Power management suspend routine
* @dev_d: device info pointer
*
* Called when the system (VM) is entering sleep/suspend.
**/
static int iavf_suspend(struct device *dev_d)
{
struct net_device *netdev = dev_get_drvdata(dev_d);
struct iavf_adapter *adapter = netdev_priv(netdev);
bool running;
netif_device_detach(netdev);
running = netif_running(netdev);
if (running)
rtnl_lock();
netdev_lock(netdev);
if (running)
iavf_down(adapter);
iavf_free_misc_irq(adapter);
iavf_reset_interrupt_capability(adapter);
netdev_unlock(netdev);
if (running)
rtnl_unlock();
return 0 ;
}
/**
* iavf_resume - Power management resume routine
* @dev_d: device info pointer
*
* Called when the system (VM) is resumed from sleep/suspend.
**/
static int iavf_resume(struct device *dev_d)
{
struct pci_dev *pdev = to_pci_dev(dev_d);
struct iavf_adapter *adapter;
u32 err;
adapter = iavf_pdev_to_adapter(pdev);
pci_set_master(pdev);
rtnl_lock();
err = iavf_set_interrupt_capability(adapter);
if (err) {
rtnl_unlock();
dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
return err;
}
err = iavf_request_misc_irq(adapter);
rtnl_unlock();
if (err) {
dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
return err;
}
queue_work(adapter->wq, &adapter->reset_task);
netif_device_attach(adapter->netdev);
return err;
}
/**
* iavf_remove - Device Removal Routine
* @pdev: PCI device information struct
*
* iavf_remove is called by the PCI subsystem to alert the driver
* that it should release a PCI device. The could be caused by a
* Hot-Plug event, or because the driver is going to be removed from
* memory.
**/
static void iavf_remove(struct pci_dev *pdev)
{
struct iavf_fdir_fltr *fdir, *fdirtmp;
struct iavf_vlan_filter *vlf, *vlftmp;
struct iavf_cloud_filter *cf, *cftmp;
struct iavf_adv_rss *rss, *rsstmp;
struct iavf_mac_filter *f, *ftmp;
struct iavf_adapter *adapter;
struct net_device *netdev;
struct iavf_hw *hw;
/* Don't proceed with remove if netdev is already freed */
netdev = pci_get_drvdata(pdev);
if (!netdev)
return;
adapter = iavf_pdev_to_adapter(pdev);
hw = &adapter->hw;
if (test_and_set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section))
return;
/* Wait until port initialization is complete.
* There are flows where register/unregister netdev may race.
*/
while (1 ) {
netdev_lock(netdev);
if (adapter->state == __IAVF_RUNNING ||
adapter->state == __IAVF_DOWN ||
adapter->state == __IAVF_INIT_FAILED) {
netdev_unlock(netdev);
break;
}
/* Simply return if we already went through iavf_shutdown */
if (adapter->state == __IAVF_REMOVE) {
netdev_unlock(netdev);
return;
}
netdev_unlock(netdev);
usleep_range(500 , 1000 );
}
cancel_delayed_work_sync(&adapter->watchdog_task);
cancel_work_sync(&adapter->finish_config);
if (netdev->reg_state == NETREG_REGISTERED)
unregister_netdev(netdev);
netdev_lock(netdev);
dev_info(&adapter->pdev->dev, "Removing device\n");
iavf_change_state(adapter, __IAVF_REMOVE);
iavf_request_reset(adapter);
msleep(50 );
/* If the FW isn't responding, kick it once, but only once. */
if (!iavf_asq_done(hw)) {
iavf_request_reset(adapter);
msleep(50 );
}
iavf_ptp_release(adapter);
iavf_misc_irq_disable(adapter);
/* Shut down all the garbage mashers on the detention level */
netdev_unlock(netdev);
cancel_work_sync(&adapter->reset_task);
cancel_delayed_work_sync(&adapter->watchdog_task);
cancel_work_sync(&adapter->adminq_task);
netdev_lock(netdev);
adapter->aq_required = 0 ;
adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
iavf_free_all_tx_resources(adapter);
iavf_free_all_rx_resources(adapter);
iavf_free_misc_irq(adapter);
iavf_free_interrupt_scheme(adapter);
iavf_free_rss(adapter);
if (hw->aq.asq.count)
iavf_shutdown_adminq(hw);
/* destroy the locks only once, here */
mutex_destroy(&hw->aq.arq_mutex);
mutex_destroy(&hw->aq.asq_mutex);
netdev_unlock(netdev);
iounmap(hw->hw_addr);
pci_release_regions(pdev);
kfree(adapter->vf_res);
spin_lock_bh(&adapter->mac_vlan_list_lock);
/* If we got removed before an up/down sequence, we've got a filter
* hanging out there that we need to get rid of.
*/
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
list_del(&f->list);
kfree(f);
}
list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
list) {
list_del(&vlf->list);
kfree(vlf);
}
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);
}
spin_unlock_bh(&adapter->cloud_filter_list_lock);
spin_lock_bh(&adapter->fdir_fltr_lock);
list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) {
list_del(&fdir->list);
kfree(fdir);
}
spin_unlock_bh(&adapter->fdir_fltr_lock);
spin_lock_bh(&adapter->adv_rss_lock);
list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head,
list) {
list_del(&rss->list);
kfree(rss);
}
spin_unlock_bh(&adapter->adv_rss_lock);
destroy_workqueue(adapter->wq);
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
pci_disable_device(pdev);
}
/**
* iavf_shutdown - Shutdown the device in preparation for a reboot
* @pdev: pci device structure
**/
static void iavf_shutdown(struct pci_dev *pdev)
{
iavf_remove(pdev);
if (system_state == SYSTEM_POWER_OFF)
pci_set_power_state(pdev, PCI_D3hot);
}
static DEFINE_SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume);
static struct pci_driver iavf_driver = {
.name = iavf_driver_name,
.id_table = iavf_pci_tbl,
.probe = iavf_probe,
.remove = iavf_remove,
.driver.pm = pm_sleep_ptr(&iavf_pm_ops),
.shutdown = iavf_shutdown,
};
/**
* iavf_init_module - Driver Registration Routine
*
* iavf_init_module is the first routine called when the driver is
* loaded. All it does is register with the PCI subsystem.
**/
static int __init iavf_init_module(void)
{
pr_info("iavf: %s\n", iavf_driver_string);
pr_info("%s\n", iavf_copyright);
return pci_register_driver(&iavf_driver);
}
module_init(iavf_init_module);
/**
* iavf_exit_module - Driver Exit Cleanup Routine
*
* iavf_exit_module is called just before the driver is removed
* from memory.
**/
static void __exit iavf_exit_module(void)
{
pci_unregister_driver(&iavf_driver);
}
module_exit(iavf_exit_module);
/* iavf_main.c */
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2026-10-11
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