566 lines
16 KiB
C
566 lines
16 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2013 - 2019 Intel Corporation. */
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#ifndef _FM10K_H_
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#define _FM10K_H_
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#include <linux/types.h>
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#include <linux/etherdevice.h>
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#include <linux/cpumask.h>
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#include <linux/rtnetlink.h>
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#include <linux/if_vlan.h>
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#include <linux/pci.h>
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#include "fm10k_pf.h"
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#include "fm10k_vf.h"
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#define FM10K_MAX_JUMBO_FRAME_SIZE 15342 /* Maximum supported size 15K */
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#define MAX_QUEUES FM10K_MAX_QUEUES_PF
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#define FM10K_MIN_RXD 128
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#define FM10K_MAX_RXD 4096
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#define FM10K_DEFAULT_RXD 256
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#define FM10K_MIN_TXD 128
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#define FM10K_MAX_TXD 4096
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#define FM10K_DEFAULT_TXD 256
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#define FM10K_DEFAULT_TX_WORK 256
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#define FM10K_RXBUFFER_256 256
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#define FM10K_RX_HDR_LEN FM10K_RXBUFFER_256
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#define FM10K_RXBUFFER_2048 2048
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#define FM10K_RX_BUFSZ FM10K_RXBUFFER_2048
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/* How many Rx Buffers do we bundle into one write to the hardware ? */
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#define FM10K_RX_BUFFER_WRITE 16 /* Must be power of 2 */
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#define FM10K_MAX_STATIONS 63
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struct fm10k_l2_accel {
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int size;
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u16 count;
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u16 dglort;
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struct rcu_head rcu;
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struct net_device *macvlan[];
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};
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enum fm10k_ring_state_t {
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__FM10K_TX_DETECT_HANG,
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__FM10K_HANG_CHECK_ARMED,
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__FM10K_TX_XPS_INIT_DONE,
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/* This must be last and is used to calculate BITMAP size */
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__FM10K_TX_STATE_SIZE__,
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};
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#define check_for_tx_hang(ring) \
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test_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
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#define set_check_for_tx_hang(ring) \
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set_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
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#define clear_check_for_tx_hang(ring) \
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clear_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
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struct fm10k_tx_buffer {
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struct fm10k_tx_desc *next_to_watch;
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struct sk_buff *skb;
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unsigned int bytecount;
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u16 gso_segs;
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u16 tx_flags;
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DEFINE_DMA_UNMAP_ADDR(dma);
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DEFINE_DMA_UNMAP_LEN(len);
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};
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struct fm10k_rx_buffer {
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dma_addr_t dma;
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struct page *page;
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u32 page_offset;
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};
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struct fm10k_queue_stats {
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u64 packets;
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u64 bytes;
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};
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struct fm10k_tx_queue_stats {
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u64 restart_queue;
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u64 csum_err;
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u64 tx_busy;
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u64 tx_done_old;
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u64 csum_good;
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};
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struct fm10k_rx_queue_stats {
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u64 alloc_failed;
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u64 csum_err;
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u64 errors;
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u64 csum_good;
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u64 switch_errors;
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u64 drops;
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u64 pp_errors;
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u64 link_errors;
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u64 length_errors;
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};
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struct fm10k_ring {
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struct fm10k_q_vector *q_vector;/* backpointer to host q_vector */
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struct net_device *netdev; /* netdev ring belongs to */
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struct device *dev; /* device for DMA mapping */
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struct fm10k_l2_accel __rcu *l2_accel; /* L2 acceleration list */
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void *desc; /* descriptor ring memory */
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union {
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struct fm10k_tx_buffer *tx_buffer;
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struct fm10k_rx_buffer *rx_buffer;
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};
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u32 __iomem *tail;
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DECLARE_BITMAP(state, __FM10K_TX_STATE_SIZE__);
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dma_addr_t dma; /* phys. address of descriptor ring */
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unsigned int size; /* length in bytes */
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u8 queue_index; /* needed for queue management */
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u8 reg_idx; /* holds the special value that gets
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* the hardware register offset
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* associated with this ring, which is
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* different for DCB and RSS modes
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*/
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u8 qos_pc; /* priority class of queue */
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u16 vid; /* default VLAN ID of queue */
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u16 count; /* amount of descriptors */
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u16 next_to_alloc;
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u16 next_to_use;
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u16 next_to_clean;
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struct fm10k_queue_stats stats;
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struct u64_stats_sync syncp;
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union {
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/* Tx */
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struct fm10k_tx_queue_stats tx_stats;
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/* Rx */
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struct {
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struct fm10k_rx_queue_stats rx_stats;
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struct sk_buff *skb;
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};
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};
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} ____cacheline_internodealigned_in_smp;
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struct fm10k_ring_container {
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struct fm10k_ring *ring; /* pointer to linked list of rings */
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unsigned int total_bytes; /* total bytes processed this int */
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unsigned int total_packets; /* total packets processed this int */
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u16 work_limit; /* total work allowed per interrupt */
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u16 itr; /* interrupt throttle rate value */
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u8 itr_scale; /* ITR adjustment based on PCI speed */
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u8 count; /* total number of rings in vector */
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};
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#define FM10K_ITR_MAX 0x0FFF /* maximum value for ITR */
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#define FM10K_ITR_10K 100 /* 100us */
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#define FM10K_ITR_20K 50 /* 50us */
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#define FM10K_ITR_40K 25 /* 25us */
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#define FM10K_ITR_ADAPTIVE 0x8000 /* adaptive interrupt moderation flag */
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#define ITR_IS_ADAPTIVE(itr) (!!(itr & FM10K_ITR_ADAPTIVE))
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#define FM10K_TX_ITR_DEFAULT FM10K_ITR_40K
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#define FM10K_RX_ITR_DEFAULT FM10K_ITR_20K
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#define FM10K_ITR_ENABLE (FM10K_ITR_AUTOMASK | FM10K_ITR_MASK_CLEAR)
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static inline struct netdev_queue *txring_txq(const struct fm10k_ring *ring)
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{
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return &ring->netdev->_tx[ring->queue_index];
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}
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/* iterator for handling rings in ring container */
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#define fm10k_for_each_ring(pos, head) \
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for (pos = &(head).ring[(head).count]; (--pos) >= (head).ring;)
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#define MAX_Q_VECTORS 256
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#define MIN_Q_VECTORS 1
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enum fm10k_non_q_vectors {
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FM10K_MBX_VECTOR,
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NON_Q_VECTORS
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};
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#define MIN_MSIX_COUNT(hw) (MIN_Q_VECTORS + NON_Q_VECTORS)
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struct fm10k_q_vector {
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struct fm10k_intfc *interface;
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u32 __iomem *itr; /* pointer to ITR register for this vector */
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u16 v_idx; /* index of q_vector within interface array */
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struct fm10k_ring_container rx, tx;
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struct napi_struct napi;
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cpumask_t affinity_mask;
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char name[IFNAMSIZ + 9];
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#ifdef CONFIG_DEBUG_FS
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struct dentry *dbg_q_vector;
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#endif /* CONFIG_DEBUG_FS */
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struct rcu_head rcu; /* to avoid race with update stats on free */
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/* for dynamic allocation of rings associated with this q_vector */
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struct fm10k_ring ring[] ____cacheline_internodealigned_in_smp;
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};
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enum fm10k_ring_f_enum {
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RING_F_RSS,
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RING_F_QOS,
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RING_F_ARRAY_SIZE /* must be last in enum set */
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};
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struct fm10k_ring_feature {
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u16 limit; /* upper limit on feature indices */
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u16 indices; /* current value of indices */
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u16 mask; /* Mask used for feature to ring mapping */
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u16 offset; /* offset to start of feature */
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};
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struct fm10k_iov_data {
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unsigned int num_vfs;
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unsigned int next_vf_mbx;
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struct rcu_head rcu;
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struct fm10k_vf_info vf_info[];
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};
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enum fm10k_macvlan_request_type {
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FM10K_UC_MAC_REQUEST,
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FM10K_MC_MAC_REQUEST,
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FM10K_VLAN_REQUEST
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};
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struct fm10k_macvlan_request {
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enum fm10k_macvlan_request_type type;
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struct list_head list;
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union {
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struct fm10k_mac_request {
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u8 addr[ETH_ALEN];
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u16 glort;
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u16 vid;
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} mac;
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struct fm10k_vlan_request {
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u32 vid;
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u8 vsi;
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} vlan;
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};
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bool set;
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};
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/* one work queue for entire driver */
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extern struct workqueue_struct *fm10k_workqueue;
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/* The following enumeration contains flags which indicate or enable modified
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* driver behaviors. To avoid race conditions, the flags are stored in
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* a BITMAP in the fm10k_intfc structure. The BITMAP should be accessed using
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* atomic *_bit() operations.
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*/
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enum fm10k_flags_t {
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FM10K_FLAG_RESET_REQUESTED,
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FM10K_FLAG_RSS_FIELD_IPV4_UDP,
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FM10K_FLAG_RSS_FIELD_IPV6_UDP,
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FM10K_FLAG_SWPRI_CONFIG,
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/* __FM10K_FLAGS_SIZE__ is used to calculate the size of
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* interface->flags and must be the last value in this
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* enumeration.
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*/
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__FM10K_FLAGS_SIZE__
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};
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enum fm10k_state_t {
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__FM10K_RESETTING,
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__FM10K_RESET_DETACHED,
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__FM10K_RESET_SUSPENDED,
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__FM10K_DOWN,
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__FM10K_SERVICE_SCHED,
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__FM10K_SERVICE_REQUEST,
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__FM10K_SERVICE_DISABLE,
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__FM10K_MACVLAN_SCHED,
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__FM10K_MACVLAN_REQUEST,
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__FM10K_MACVLAN_DISABLE,
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__FM10K_LINK_DOWN,
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__FM10K_UPDATING_STATS,
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/* This value must be last and determines the BITMAP size */
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__FM10K_STATE_SIZE__,
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};
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struct fm10k_intfc {
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unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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struct net_device *netdev;
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struct fm10k_l2_accel *l2_accel; /* pointer to L2 acceleration list */
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struct pci_dev *pdev;
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DECLARE_BITMAP(state, __FM10K_STATE_SIZE__);
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/* Access flag values using atomic *_bit() operations */
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DECLARE_BITMAP(flags, __FM10K_FLAGS_SIZE__);
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int xcast_mode;
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/* Tx fast path data */
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int num_tx_queues;
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u16 tx_itr;
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/* Rx fast path data */
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int num_rx_queues;
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u16 rx_itr;
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/* TX */
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struct fm10k_ring *tx_ring[MAX_QUEUES] ____cacheline_aligned_in_smp;
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u64 restart_queue;
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u64 tx_busy;
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u64 tx_csum_errors;
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u64 alloc_failed;
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u64 rx_csum_errors;
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u64 tx_bytes_nic;
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u64 tx_packets_nic;
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u64 rx_bytes_nic;
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u64 rx_packets_nic;
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u64 rx_drops_nic;
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u64 rx_overrun_pf;
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u64 rx_overrun_vf;
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/* Debug Statistics */
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u64 hw_sm_mbx_full;
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u64 hw_csum_tx_good;
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u64 hw_csum_rx_good;
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u64 rx_switch_errors;
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u64 rx_drops;
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u64 rx_pp_errors;
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u64 rx_link_errors;
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u64 rx_length_errors;
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u32 tx_timeout_count;
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/* RX */
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struct fm10k_ring *rx_ring[MAX_QUEUES];
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/* Queueing vectors */
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struct fm10k_q_vector *q_vector[MAX_Q_VECTORS];
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struct msix_entry *msix_entries;
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int num_q_vectors; /* current number of q_vectors for device */
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struct fm10k_ring_feature ring_feature[RING_F_ARRAY_SIZE];
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/* SR-IOV information management structure */
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struct fm10k_iov_data *iov_data;
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struct fm10k_hw_stats stats;
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struct fm10k_hw hw;
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/* Mailbox lock */
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spinlock_t mbx_lock;
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u32 __iomem *uc_addr;
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u32 __iomem *sw_addr;
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u16 msg_enable;
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u16 tx_ring_count;
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u16 rx_ring_count;
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struct timer_list service_timer;
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struct work_struct service_task;
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unsigned long next_stats_update;
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unsigned long next_tx_hang_check;
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unsigned long last_reset;
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unsigned long link_down_event;
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bool host_ready;
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bool lport_map_failed;
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u32 reta[FM10K_RETA_SIZE];
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u32 rssrk[FM10K_RSSRK_SIZE];
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/* UDP encapsulation port tracking information */
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__be16 vxlan_port;
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__be16 geneve_port;
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/* MAC/VLAN update queue */
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struct list_head macvlan_requests;
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struct delayed_work macvlan_task;
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/* MAC/VLAN update queue lock */
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spinlock_t macvlan_lock;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *dbg_intfc;
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#endif /* CONFIG_DEBUG_FS */
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#ifdef CONFIG_DCB
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u8 pfc_en;
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#endif
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u8 rx_pause;
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/* GLORT resources in use by PF */
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u16 glort;
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u16 glort_count;
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/* VLAN ID for updating multicast/unicast lists */
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u16 vid;
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};
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static inline void fm10k_mbx_lock(struct fm10k_intfc *interface)
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{
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spin_lock(&interface->mbx_lock);
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}
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static inline void fm10k_mbx_unlock(struct fm10k_intfc *interface)
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{
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spin_unlock(&interface->mbx_lock);
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}
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static inline int fm10k_mbx_trylock(struct fm10k_intfc *interface)
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{
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return spin_trylock(&interface->mbx_lock);
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}
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/* fm10k_test_staterr - test bits in Rx descriptor status and error fields */
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static inline __le32 fm10k_test_staterr(union fm10k_rx_desc *rx_desc,
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const u32 stat_err_bits)
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{
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return rx_desc->d.staterr & cpu_to_le32(stat_err_bits);
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}
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/* fm10k_desc_unused - calculate if we have unused descriptors */
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static inline u16 fm10k_desc_unused(struct fm10k_ring *ring)
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{
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s16 unused = ring->next_to_clean - ring->next_to_use - 1;
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return likely(unused < 0) ? unused + ring->count : unused;
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}
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#define FM10K_TX_DESC(R, i) \
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(&(((struct fm10k_tx_desc *)((R)->desc))[i]))
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#define FM10K_RX_DESC(R, i) \
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(&(((union fm10k_rx_desc *)((R)->desc))[i]))
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#define FM10K_MAX_TXD_PWR 14
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#define FM10K_MAX_DATA_PER_TXD (1u << FM10K_MAX_TXD_PWR)
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/* Tx Descriptors needed, worst case */
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#define TXD_USE_COUNT(S) DIV_ROUND_UP((S), FM10K_MAX_DATA_PER_TXD)
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#define DESC_NEEDED (MAX_SKB_FRAGS + 4)
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enum fm10k_tx_flags {
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/* Tx offload flags */
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FM10K_TX_FLAGS_CSUM = 0x01,
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};
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/* This structure is stored as little endian values as that is the native
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* format of the Rx descriptor. The ordering of these fields is reversed
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* from the actual ftag header to allow for a single bswap to take care
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* of placing all of the values in network order
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*/
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union fm10k_ftag_info {
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__le64 ftag;
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struct {
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/* dglort and sglort combined into a single 32bit desc read */
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__le32 glort;
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/* upper 16 bits of VLAN are reserved 0 for swpri_type_user */
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__le32 vlan;
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} d;
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struct {
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__le16 dglort;
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__le16 sglort;
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__le16 vlan;
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__le16 swpri_type_user;
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} w;
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};
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struct fm10k_cb {
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union {
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__le64 tstamp;
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unsigned long ts_tx_timeout;
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};
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union fm10k_ftag_info fi;
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};
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#define FM10K_CB(skb) ((struct fm10k_cb *)(skb)->cb)
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/* main */
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extern char fm10k_driver_name[];
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int fm10k_init_queueing_scheme(struct fm10k_intfc *interface);
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void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface);
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__be16 fm10k_tx_encap_offload(struct sk_buff *skb);
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netdev_tx_t fm10k_xmit_frame_ring(struct sk_buff *skb,
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struct fm10k_ring *tx_ring);
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void fm10k_tx_timeout_reset(struct fm10k_intfc *interface);
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u64 fm10k_get_tx_pending(struct fm10k_ring *ring, bool in_sw);
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bool fm10k_check_tx_hang(struct fm10k_ring *tx_ring);
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void fm10k_alloc_rx_buffers(struct fm10k_ring *rx_ring, u16 cleaned_count);
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/* PCI */
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void fm10k_mbx_free_irq(struct fm10k_intfc *);
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int fm10k_mbx_request_irq(struct fm10k_intfc *);
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void fm10k_qv_free_irq(struct fm10k_intfc *interface);
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int fm10k_qv_request_irq(struct fm10k_intfc *interface);
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int fm10k_register_pci_driver(void);
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void fm10k_unregister_pci_driver(void);
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void fm10k_up(struct fm10k_intfc *interface);
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void fm10k_down(struct fm10k_intfc *interface);
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void fm10k_update_stats(struct fm10k_intfc *interface);
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void fm10k_service_event_schedule(struct fm10k_intfc *interface);
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void fm10k_macvlan_schedule(struct fm10k_intfc *interface);
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void fm10k_update_rx_drop_en(struct fm10k_intfc *interface);
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/* Netdev */
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struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info);
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int fm10k_setup_rx_resources(struct fm10k_ring *);
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int fm10k_setup_tx_resources(struct fm10k_ring *);
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void fm10k_free_rx_resources(struct fm10k_ring *);
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void fm10k_free_tx_resources(struct fm10k_ring *);
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void fm10k_clean_all_rx_rings(struct fm10k_intfc *);
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void fm10k_clean_all_tx_rings(struct fm10k_intfc *);
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void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *,
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struct fm10k_tx_buffer *);
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void fm10k_restore_rx_state(struct fm10k_intfc *);
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void fm10k_reset_rx_state(struct fm10k_intfc *);
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int fm10k_setup_tc(struct net_device *dev, u8 tc);
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int fm10k_open(struct net_device *netdev);
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int fm10k_close(struct net_device *netdev);
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int fm10k_queue_vlan_request(struct fm10k_intfc *interface, u32 vid,
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u8 vsi, bool set);
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int fm10k_queue_mac_request(struct fm10k_intfc *interface, u16 glort,
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const unsigned char *addr, u16 vid, bool set);
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void fm10k_clear_macvlan_queue(struct fm10k_intfc *interface,
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u16 glort, bool vlans);
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/* Ethtool */
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void fm10k_set_ethtool_ops(struct net_device *dev);
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void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir);
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/* IOV */
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s32 fm10k_iov_event(struct fm10k_intfc *interface);
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s32 fm10k_iov_mbx(struct fm10k_intfc *interface);
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void fm10k_iov_suspend(struct pci_dev *pdev);
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int fm10k_iov_resume(struct pci_dev *pdev);
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void fm10k_iov_disable(struct pci_dev *pdev);
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int fm10k_iov_configure(struct pci_dev *pdev, int num_vfs);
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void fm10k_iov_update_stats(struct fm10k_intfc *interface);
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s32 fm10k_iov_update_pvid(struct fm10k_intfc *interface, u16 glort, u16 pvid);
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int fm10k_ndo_set_vf_mac(struct net_device *netdev, int vf_idx, u8 *mac);
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int fm10k_ndo_set_vf_vlan(struct net_device *netdev,
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int vf_idx, u16 vid, u8 qos, __be16 vlan_proto);
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int fm10k_ndo_set_vf_bw(struct net_device *netdev, int vf_idx,
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int __always_unused min_rate, int max_rate);
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int fm10k_ndo_get_vf_config(struct net_device *netdev,
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int vf_idx, struct ifla_vf_info *ivi);
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int fm10k_ndo_get_vf_stats(struct net_device *netdev,
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int vf_idx, struct ifla_vf_stats *stats);
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/* DebugFS */
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#ifdef CONFIG_DEBUG_FS
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void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector);
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void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector);
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void fm10k_dbg_intfc_init(struct fm10k_intfc *interface);
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void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface);
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void fm10k_dbg_init(void);
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void fm10k_dbg_exit(void);
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#else
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static inline void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector) {}
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static inline void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector) {}
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static inline void fm10k_dbg_intfc_init(struct fm10k_intfc *interface) {}
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static inline void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface) {}
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static inline void fm10k_dbg_init(void) {}
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static inline void fm10k_dbg_exit(void) {}
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#endif /* CONFIG_DEBUG_FS */
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/* DCB */
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#ifdef CONFIG_DCB
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void fm10k_dcbnl_set_ops(struct net_device *dev);
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#else
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static inline void fm10k_dcbnl_set_ops(struct net_device *dev) {}
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#endif
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#endif /* _FM10K_H_ */
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