xref: /openbmc/linux/drivers/net/ethernet/intel/ixgbe/ixgbe.h (revision 366fd1000995d4cf64e1a61a0d78a051550b9841)

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright(c) 1999 - 2018 Intel Corporation. */

#ifndef _IXGBE_H_
#define _IXGBE_H_

#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/cpumask.h>
#include <linux/aer.h>
#include <linux/if_vlan.h>
#include <linux/jiffies.h>
#include <linux/phy.h>

#include <linux/timecounter.h>
#include <linux/net_tstamp.h>
#include <linux/ptp_clock_kernel.h>

#include "ixgbe_type.h"
#include "ixgbe_common.h"
#include "ixgbe_dcb.h"
#if IS_ENABLED(CONFIG_FCOE)
#define IXGBE_FCOE
#include "ixgbe_fcoe.h"
#endif /* IS_ENABLED(CONFIG_FCOE) */
#ifdef CONFIG_IXGBE_DCA
#include <linux/dca.h>
#endif
#include "ixgbe_ipsec.h"

#include <net/xdp.h>

/* common prefix used by pr_<> macros */
#undef pr_fmt
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

/* TX/RX descriptor defines */
#define IXGBE_DEFAULT_TXD		    512
#define IXGBE_DEFAULT_TX_WORK		    256
#define IXGBE_MAX_TXD			   4096
#define IXGBE_MIN_TXD			     64

#if (PAGE_SIZE < 8192)
#define IXGBE_DEFAULT_RXD		    512
#else
#define IXGBE_DEFAULT_RXD		    128
#endif
#define IXGBE_MAX_RXD			   4096
#define IXGBE_MIN_RXD			     64

/* flow control */
#define IXGBE_MIN_FCRTL			   0x40
#define IXGBE_MAX_FCRTL			0x7FF80
#define IXGBE_MIN_FCRTH			  0x600
#define IXGBE_MAX_FCRTH			0x7FFF0
#define IXGBE_DEFAULT_FCPAUSE		 0xFFFF
#define IXGBE_MIN_FCPAUSE		      0
#define IXGBE_MAX_FCPAUSE		 0xFFFF

/* Supported Rx Buffer Sizes */
#define IXGBE_RXBUFFER_256    256  /* Used for skb receive header */
#define IXGBE_RXBUFFER_1536  1536
#define IXGBE_RXBUFFER_2K    2048
#define IXGBE_RXBUFFER_3K    3072
#define IXGBE_RXBUFFER_4K    4096
#define IXGBE_MAX_RXBUFFER  16384  /* largest size for a single descriptor */

/* Attempt to maximize the headroom available for incoming frames.  We
 * use a 2K buffer for receives and need 1536/1534 to store the data for
 * the frame.  This leaves us with 512 bytes of room.  From that we need
 * to deduct the space needed for the shared info and the padding needed
 * to IP align the frame.
 *
 * Note: For cache line sizes 256 or larger this value is going to end
 *	 up negative.  In these cases we should fall back to the 3K
 *	 buffers.
 */
#if (PAGE_SIZE < 8192)
#define IXGBE_MAX_2K_FRAME_BUILD_SKB (IXGBE_RXBUFFER_1536 - NET_IP_ALIGN)
#define IXGBE_2K_TOO_SMALL_WITH_PADDING \
((NET_SKB_PAD + IXGBE_RXBUFFER_1536) > SKB_WITH_OVERHEAD(IXGBE_RXBUFFER_2K))

static inline int ixgbe_compute_pad(int rx_buf_len)
{
	int page_size, pad_size;

	page_size = ALIGN(rx_buf_len, PAGE_SIZE / 2);
	pad_size = SKB_WITH_OVERHEAD(page_size) - rx_buf_len;

	return pad_size;
}

static inline int ixgbe_skb_pad(void)
{
	int rx_buf_len;

	/* If a 2K buffer cannot handle a standard Ethernet frame then
	 * optimize padding for a 3K buffer instead of a 1.5K buffer.
	 *
	 * For a 3K buffer we need to add enough padding to allow for
	 * tailroom due to NET_IP_ALIGN possibly shifting us out of
	 * cache-line alignment.
	 */
	if (IXGBE_2K_TOO_SMALL_WITH_PADDING)
		rx_buf_len = IXGBE_RXBUFFER_3K + SKB_DATA_ALIGN(NET_IP_ALIGN);
	else
		rx_buf_len = IXGBE_RXBUFFER_1536;

	/* if needed make room for NET_IP_ALIGN */
	rx_buf_len -= NET_IP_ALIGN;

	return ixgbe_compute_pad(rx_buf_len);
}

#define IXGBE_SKB_PAD	ixgbe_skb_pad()
#else
#define IXGBE_SKB_PAD	(NET_SKB_PAD + NET_IP_ALIGN)
#endif

/*
 * NOTE: netdev_alloc_skb reserves up to 64 bytes, NET_IP_ALIGN means we
 * reserve 64 more, and skb_shared_info adds an additional 320 bytes more,
 * this adds up to 448 bytes of extra data.
 *
 * Since netdev_alloc_skb now allocates a page fragment we can use a value
 * of 256 and the resultant skb will have a truesize of 960 or less.
 */
#define IXGBE_RX_HDR_SIZE IXGBE_RXBUFFER_256

/* How many Rx Buffers do we bundle into one write to the hardware ? */
#define IXGBE_RX_BUFFER_WRITE	16	/* Must be power of 2 */

#define IXGBE_RX_DMA_ATTR \
	(DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING)

enum ixgbe_tx_flags {
	/* cmd_type flags */
	IXGBE_TX_FLAGS_HW_VLAN	= 0x01,
	IXGBE_TX_FLAGS_TSO	= 0x02,
	IXGBE_TX_FLAGS_TSTAMP	= 0x04,

	/* olinfo flags */
	IXGBE_TX_FLAGS_CC	= 0x08,
	IXGBE_TX_FLAGS_IPV4	= 0x10,
	IXGBE_TX_FLAGS_CSUM	= 0x20,
	IXGBE_TX_FLAGS_IPSEC	= 0x40,

	/* software defined flags */
	IXGBE_TX_FLAGS_SW_VLAN	= 0x80,
	IXGBE_TX_FLAGS_FCOE	= 0x100,
};

/* VLAN info */
#define IXGBE_TX_FLAGS_VLAN_MASK	0xffff0000
#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK	0xe0000000
#define IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT  29
#define IXGBE_TX_FLAGS_VLAN_SHIFT	16

#define IXGBE_MAX_VF_MC_ENTRIES         30
#define IXGBE_MAX_VF_FUNCTIONS          64
#define IXGBE_MAX_VFTA_ENTRIES          128
#define MAX_EMULATION_MAC_ADDRS         16
#define IXGBE_MAX_PF_MACVLANS           15
#define VMDQ_P(p)   ((p) + adapter->ring_feature[RING_F_VMDQ].offset)
#define IXGBE_82599_VF_DEVICE_ID        0x10ED
#define IXGBE_X540_VF_DEVICE_ID         0x1515

struct vf_data_storage {
	struct pci_dev *vfdev;
	unsigned char vf_mac_addresses[ETH_ALEN];
	u16 vf_mc_hashes[IXGBE_MAX_VF_MC_ENTRIES];
	u16 num_vf_mc_hashes;
	bool clear_to_send;
	bool pf_set_mac;
	u16 pf_vlan; /* When set, guest VLAN config not allowed. */
	u16 pf_qos;
	u16 tx_rate;
	int link_enable;
	int link_state;
	u8 spoofchk_enabled;
	bool rss_query_enabled;
	u8 trusted;
	int xcast_mode;
	unsigned int vf_api;
};

enum ixgbevf_xcast_modes {
	IXGBEVF_XCAST_MODE_NONE = 0,
	IXGBEVF_XCAST_MODE_MULTI,
	IXGBEVF_XCAST_MODE_ALLMULTI,
	IXGBEVF_XCAST_MODE_PROMISC,
};

struct vf_macvlans {
	struct list_head l;
	int vf;
	bool free;
	bool is_macvlan;
	u8 vf_macvlan[ETH_ALEN];
};

#define IXGBE_MAX_TXD_PWR	14
#define IXGBE_MAX_DATA_PER_TXD	(1u << IXGBE_MAX_TXD_PWR)

/* Tx Descriptors needed, worst case */
#define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IXGBE_MAX_DATA_PER_TXD)
#define DESC_NEEDED (MAX_SKB_FRAGS + 4)

/* wrapper around a pointer to a socket buffer,
 * so a DMA handle can be stored along with the buffer */
struct ixgbe_tx_buffer {
	union ixgbe_adv_tx_desc *next_to_watch;
	unsigned long time_stamp;
	union {
		struct sk_buff *skb;
		struct xdp_frame *xdpf;
	};
	unsigned int bytecount;
	unsigned short gso_segs;
	__be16 protocol;
	DEFINE_DMA_UNMAP_ADDR(dma);
	DEFINE_DMA_UNMAP_LEN(len);
	u32 tx_flags;
};

struct ixgbe_rx_buffer {
	union {
		struct {
			struct sk_buff *skb;
			dma_addr_t dma;
			struct page *page;
			__u32 page_offset;
			__u16 pagecnt_bias;
		};
		struct {
			bool discard;
			struct xdp_buff *xdp;
		};
	};
};

struct ixgbe_queue_stats {
	u64 packets;
	u64 bytes;
};

struct ixgbe_tx_queue_stats {
	u64 restart_queue;
	u64 tx_busy;
	u64 tx_done_old;
};

struct ixgbe_rx_queue_stats {
	u64 rsc_count;
	u64 rsc_flush;
	u64 non_eop_descs;
	u64 alloc_rx_page;
	u64 alloc_rx_page_failed;
	u64 alloc_rx_buff_failed;
	u64 csum_err;
};

#define IXGBE_TS_HDR_LEN 8

enum ixgbe_ring_state_t {
	__IXGBE_RX_3K_BUFFER,
	__IXGBE_RX_BUILD_SKB_ENABLED,
	__IXGBE_RX_RSC_ENABLED,
	__IXGBE_RX_CSUM_UDP_ZERO_ERR,
	__IXGBE_RX_FCOE,
	__IXGBE_TX_FDIR_INIT_DONE,
	__IXGBE_TX_XPS_INIT_DONE,
	__IXGBE_TX_DETECT_HANG,
	__IXGBE_HANG_CHECK_ARMED,
	__IXGBE_TX_XDP_RING,
	__IXGBE_TX_DISABLED,
};

#define ring_uses_build_skb(ring) \
	test_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &(ring)->state)

struct ixgbe_fwd_adapter {
	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
	struct net_device *netdev;
	unsigned int tx_base_queue;
	unsigned int rx_base_queue;
	int pool;
};

#define check_for_tx_hang(ring) \
	test_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
#define set_check_for_tx_hang(ring) \
	set_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
#define clear_check_for_tx_hang(ring) \
	clear_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
#define ring_is_rsc_enabled(ring) \
	test_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
#define set_ring_rsc_enabled(ring) \
	set_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
#define clear_ring_rsc_enabled(ring) \
	clear_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
#define ring_is_xdp(ring) \
	test_bit(__IXGBE_TX_XDP_RING, &(ring)->state)
#define set_ring_xdp(ring) \
	set_bit(__IXGBE_TX_XDP_RING, &(ring)->state)
#define clear_ring_xdp(ring) \
	clear_bit(__IXGBE_TX_XDP_RING, &(ring)->state)
struct ixgbe_ring {
	struct ixgbe_ring *next;	/* pointer to next ring in q_vector */
	struct ixgbe_q_vector *q_vector; /* backpointer to host q_vector */
	struct net_device *netdev;	/* netdev ring belongs to */
	struct bpf_prog *xdp_prog;
	struct device *dev;		/* device for DMA mapping */
	void *desc;			/* descriptor ring memory */
	union {
		struct ixgbe_tx_buffer *tx_buffer_info;
		struct ixgbe_rx_buffer *rx_buffer_info;
	};
	unsigned long state;
	u8 __iomem *tail;
	dma_addr_t dma;			/* phys. address of descriptor ring */
	unsigned int size;		/* length in bytes */

	u16 count;			/* amount of descriptors */

	u8 queue_index; /* needed for multiqueue queue management */
	u8 reg_idx;			/* holds the special value that gets
					 * the hardware register offset
					 * associated with this ring, which is
					 * different for DCB and RSS modes
					 */
	u16 next_to_use;
	u16 next_to_clean;

	unsigned long last_rx_timestamp;

	union {
		u16 next_to_alloc;
		struct {
			u8 atr_sample_rate;
			u8 atr_count;
		};
	};

	u8 dcb_tc;
	struct ixgbe_queue_stats stats;
	struct u64_stats_sync syncp;
	union {
		struct ixgbe_tx_queue_stats tx_stats;
		struct ixgbe_rx_queue_stats rx_stats;
	};
	u16 rx_offset;
	struct xdp_rxq_info xdp_rxq;
	spinlock_t tx_lock;	/* used in XDP mode */
	struct xsk_buff_pool *xsk_pool;
	u16 ring_idx;		/* {rx,tx,xdp}_ring back reference idx */
	u16 rx_buf_len;
} ____cacheline_internodealigned_in_smp;

enum ixgbe_ring_f_enum {
	RING_F_NONE = 0,
	RING_F_VMDQ,  /* SR-IOV uses the same ring feature */
	RING_F_RSS,
	RING_F_FDIR,
#ifdef IXGBE_FCOE
	RING_F_FCOE,
#endif /* IXGBE_FCOE */

	RING_F_ARRAY_SIZE      /* must be last in enum set */
};

#define IXGBE_MAX_RSS_INDICES		16
#define IXGBE_MAX_RSS_INDICES_X550	63
#define IXGBE_MAX_VMDQ_INDICES		64
#define IXGBE_MAX_FDIR_INDICES		63	/* based on q_vector limit */
#define IXGBE_MAX_FCOE_INDICES		8
#define MAX_RX_QUEUES			(IXGBE_MAX_FDIR_INDICES + 1)
#define MAX_TX_QUEUES			(IXGBE_MAX_FDIR_INDICES + 1)
#define IXGBE_MAX_XDP_QS		(IXGBE_MAX_FDIR_INDICES + 1)
#define IXGBE_MAX_L2A_QUEUES		4
#define IXGBE_BAD_L2A_QUEUE		3
#define IXGBE_MAX_MACVLANS		63

DECLARE_STATIC_KEY_FALSE(ixgbe_xdp_locking_key);

struct ixgbe_ring_feature {
	u16 limit;	/* upper limit on feature indices */
	u16 indices;	/* current value of indices */
	u16 mask;	/* Mask used for feature to ring mapping */
	u16 offset;	/* offset to start of feature */
} ____cacheline_internodealigned_in_smp;

#define IXGBE_82599_VMDQ_8Q_MASK 0x78
#define IXGBE_82599_VMDQ_4Q_MASK 0x7C
#define IXGBE_82599_VMDQ_2Q_MASK 0x7E

/*
 * FCoE requires that all Rx buffers be over 2200 bytes in length.  Since
 * this is twice the size of a half page we need to double the page order
 * for FCoE enabled Rx queues.
 */
static inline unsigned int ixgbe_rx_bufsz(struct ixgbe_ring *ring)
{
	if (test_bit(__IXGBE_RX_3K_BUFFER, &ring->state))
		return IXGBE_RXBUFFER_3K;
#if (PAGE_SIZE < 8192)
	if (ring_uses_build_skb(ring))
		return IXGBE_MAX_2K_FRAME_BUILD_SKB;
#endif
	return IXGBE_RXBUFFER_2K;
}

static inline unsigned int ixgbe_rx_pg_order(struct ixgbe_ring *ring)
{
#if (PAGE_SIZE < 8192)
	if (test_bit(__IXGBE_RX_3K_BUFFER, &ring->state))
		return 1;
#endif
	return 0;
}
#define ixgbe_rx_pg_size(_ring) (PAGE_SIZE << ixgbe_rx_pg_order(_ring))

#define IXGBE_ITR_ADAPTIVE_MIN_INC	2
#define IXGBE_ITR_ADAPTIVE_MIN_USECS	10
#define IXGBE_ITR_ADAPTIVE_MAX_USECS	126
#define IXGBE_ITR_ADAPTIVE_LATENCY	0x80
#define IXGBE_ITR_ADAPTIVE_BULK		0x00

struct ixgbe_ring_container {
	struct ixgbe_ring *ring;	/* pointer to linked list of rings */
	unsigned long next_update;	/* jiffies value of last update */
	unsigned int total_bytes;	/* total bytes processed this int */
	unsigned int total_packets;	/* total packets processed this int */
	u16 work_limit;			/* total work allowed per interrupt */
	u8 count;			/* total number of rings in vector */
	u8 itr;				/* current ITR setting for ring */
};

/* iterator for handling rings in ring container */
#define ixgbe_for_each_ring(pos, head) \
	for (pos = (head).ring; pos != NULL; pos = pos->next)

#define MAX_RX_PACKET_BUFFERS ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) \
			      ? 8 : 1)
#define MAX_TX_PACKET_BUFFERS MAX_RX_PACKET_BUFFERS

/* MAX_Q_VECTORS of these are allocated,
 * but we only use one per queue-specific vector.
 */
struct ixgbe_q_vector {
	struct ixgbe_adapter *adapter;
#ifdef CONFIG_IXGBE_DCA
	int cpu;	    /* CPU for DCA */
#endif
	u16 v_idx;		/* index of q_vector within array, also used for
				 * finding the bit in EICR and friends that
				 * represents the vector for this ring */
	u16 itr;		/* Interrupt throttle rate written to EITR */
	struct ixgbe_ring_container rx, tx;

	struct napi_struct napi;
	cpumask_t affinity_mask;
	int numa_node;
	struct rcu_head rcu;	/* to avoid race with update stats on free */
	char name[IFNAMSIZ + 9];

	/* for dynamic allocation of rings associated with this q_vector */
	struct ixgbe_ring ring[] ____cacheline_internodealigned_in_smp;
};

#ifdef CONFIG_IXGBE_HWMON

#define IXGBE_HWMON_TYPE_LOC		0
#define IXGBE_HWMON_TYPE_TEMP		1
#define IXGBE_HWMON_TYPE_CAUTION	2
#define IXGBE_HWMON_TYPE_MAX		3

struct hwmon_attr {
	struct device_attribute dev_attr;
	struct ixgbe_hw *hw;
	struct ixgbe_thermal_diode_data *sensor;
	char name[12];
};

struct hwmon_buff {
	struct attribute_group group;
	const struct attribute_group *groups[2];
	struct attribute *attrs[IXGBE_MAX_SENSORS * 4 + 1];
	struct hwmon_attr hwmon_list[IXGBE_MAX_SENSORS * 4];
	unsigned int n_hwmon;
};
#endif /* CONFIG_IXGBE_HWMON */

/*
 * microsecond values for various ITR rates shifted by 2 to fit itr register
 * with the first 3 bits reserved 0
 */
#define IXGBE_MIN_RSC_ITR	24
#define IXGBE_100K_ITR		40
#define IXGBE_20K_ITR		200
#define IXGBE_12K_ITR		336

/* ixgbe_test_staterr - tests bits in Rx descriptor status and error fields */
static inline __le32 ixgbe_test_staterr(union ixgbe_adv_rx_desc *rx_desc,
					const u32 stat_err_bits)
{
	return rx_desc->wb.upper.status_error & cpu_to_le32(stat_err_bits);
}

static inline u16 ixgbe_desc_unused(struct ixgbe_ring *ring)
{
	u16 ntc = ring->next_to_clean;
	u16 ntu = ring->next_to_use;

	return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1;
}

#define IXGBE_RX_DESC(R, i)	    \
	(&(((union ixgbe_adv_rx_desc *)((R)->desc))[i]))
#define IXGBE_TX_DESC(R, i)	    \
	(&(((union ixgbe_adv_tx_desc *)((R)->desc))[i]))
#define IXGBE_TX_CTXTDESC(R, i)	    \
	(&(((struct ixgbe_adv_tx_context_desc *)((R)->desc))[i]))

#define IXGBE_MAX_JUMBO_FRAME_SIZE	9728 /* Maximum Supported Size 9.5KB */
#ifdef IXGBE_FCOE
/* Use 3K as the baby jumbo frame size for FCoE */
#define IXGBE_FCOE_JUMBO_FRAME_SIZE       3072
#endif /* IXGBE_FCOE */

#define OTHER_VECTOR 1
#define NON_Q_VECTORS (OTHER_VECTOR)

#define MAX_MSIX_VECTORS_82599 64
#define MAX_Q_VECTORS_82599 64
#define MAX_MSIX_VECTORS_82598 18
#define MAX_Q_VECTORS_82598 16

struct ixgbe_mac_addr {
	u8 addr[ETH_ALEN];
	u16 pool;
	u16 state; /* bitmask */
};

#define IXGBE_MAC_STATE_DEFAULT		0x1
#define IXGBE_MAC_STATE_MODIFIED	0x2
#define IXGBE_MAC_STATE_IN_USE		0x4

#define MAX_Q_VECTORS MAX_Q_VECTORS_82599
#define MAX_MSIX_COUNT MAX_MSIX_VECTORS_82599

#define MIN_MSIX_Q_VECTORS 1
#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)

/* default to trying for four seconds */
#define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
#define IXGBE_SFP_POLL_JIFFIES (2 * HZ)	/* SFP poll every 2 seconds */

/* board specific private data structure */
struct ixgbe_adapter {
	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
	/* OS defined structs */
	struct net_device *netdev;
	struct bpf_prog *xdp_prog;
	struct pci_dev *pdev;
	struct mii_bus *mii_bus;

	unsigned long state;

	/* Some features need tri-state capability,
	 * thus the additional *_CAPABLE flags.
	 */
	u32 flags;
#define IXGBE_FLAG_MSI_ENABLED			BIT(1)
#define IXGBE_FLAG_MSIX_ENABLED			BIT(3)
#define IXGBE_FLAG_RX_1BUF_CAPABLE		BIT(4)
#define IXGBE_FLAG_RX_PS_CAPABLE		BIT(5)
#define IXGBE_FLAG_RX_PS_ENABLED		BIT(6)
#define IXGBE_FLAG_DCA_ENABLED			BIT(8)
#define IXGBE_FLAG_DCA_CAPABLE			BIT(9)
#define IXGBE_FLAG_IMIR_ENABLED			BIT(10)
#define IXGBE_FLAG_MQ_CAPABLE			BIT(11)
#define IXGBE_FLAG_DCB_ENABLED			BIT(12)
#define IXGBE_FLAG_VMDQ_CAPABLE			BIT(13)
#define IXGBE_FLAG_VMDQ_ENABLED			BIT(14)
#define IXGBE_FLAG_FAN_FAIL_CAPABLE		BIT(15)
#define IXGBE_FLAG_NEED_LINK_UPDATE		BIT(16)
#define IXGBE_FLAG_NEED_LINK_CONFIG		BIT(17)
#define IXGBE_FLAG_FDIR_HASH_CAPABLE		BIT(18)
#define IXGBE_FLAG_FDIR_PERFECT_CAPABLE		BIT(19)
#define IXGBE_FLAG_FCOE_CAPABLE			BIT(20)
#define IXGBE_FLAG_FCOE_ENABLED			BIT(21)
#define IXGBE_FLAG_SRIOV_CAPABLE		BIT(22)
#define IXGBE_FLAG_SRIOV_ENABLED		BIT(23)
#define IXGBE_FLAG_RX_HWTSTAMP_ENABLED		BIT(25)
#define IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER	BIT(26)
#define IXGBE_FLAG_DCB_CAPABLE			BIT(27)

	u32 flags2;
#define IXGBE_FLAG2_RSC_CAPABLE			BIT(0)
#define IXGBE_FLAG2_RSC_ENABLED			BIT(1)
#define IXGBE_FLAG2_TEMP_SENSOR_CAPABLE		BIT(2)
#define IXGBE_FLAG2_TEMP_SENSOR_EVENT		BIT(3)
#define IXGBE_FLAG2_SEARCH_FOR_SFP		BIT(4)
#define IXGBE_FLAG2_SFP_NEEDS_RESET		BIT(5)
#define IXGBE_FLAG2_FDIR_REQUIRES_REINIT	BIT(7)
#define IXGBE_FLAG2_RSS_FIELD_IPV4_UDP		BIT(8)
#define IXGBE_FLAG2_RSS_FIELD_IPV6_UDP		BIT(9)
#define IXGBE_FLAG2_PTP_PPS_ENABLED		BIT(10)
#define IXGBE_FLAG2_PHY_INTERRUPT		BIT(11)
#define IXGBE_FLAG2_VLAN_PROMISC		BIT(13)
#define IXGBE_FLAG2_EEE_CAPABLE			BIT(14)
#define IXGBE_FLAG2_EEE_ENABLED			BIT(15)
#define IXGBE_FLAG2_RX_LEGACY			BIT(16)
#define IXGBE_FLAG2_IPSEC_ENABLED		BIT(17)
#define IXGBE_FLAG2_VF_IPSEC_ENABLED		BIT(18)

	/* Tx fast path data */
	int num_tx_queues;
	u16 tx_itr_setting;
	u16 tx_work_limit;
	u64 tx_ipsec;

	/* Rx fast path data */
	int num_rx_queues;
	u16 rx_itr_setting;
	u64 rx_ipsec;

	/* Port number used to identify VXLAN traffic */
	__be16 vxlan_port;
	__be16 geneve_port;

	/* XDP */
	int num_xdp_queues;
	struct ixgbe_ring *xdp_ring[IXGBE_MAX_XDP_QS];
	unsigned long *af_xdp_zc_qps; /* tracks AF_XDP ZC enabled rings */

	/* TX */
	struct ixgbe_ring *tx_ring[MAX_TX_QUEUES] ____cacheline_aligned_in_smp;

	u64 restart_queue;
	u64 lsc_int;
	u32 tx_timeout_count;

	/* RX */
	struct ixgbe_ring *rx_ring[MAX_RX_QUEUES];
	int num_rx_pools;		/* == num_rx_queues in 82598 */
	int num_rx_queues_per_pool;	/* 1 if 82598, can be many if 82599 */
	u64 hw_csum_rx_error;
	u64 hw_rx_no_dma_resources;
	u64 rsc_total_count;
	u64 rsc_total_flush;
	u64 non_eop_descs;
	u32 alloc_rx_page;
	u32 alloc_rx_page_failed;
	u32 alloc_rx_buff_failed;

	struct ixgbe_q_vector *q_vector[MAX_Q_VECTORS];

	/* DCB parameters */
	struct ieee_pfc *ixgbe_ieee_pfc;
	struct ieee_ets *ixgbe_ieee_ets;
	struct ixgbe_dcb_config dcb_cfg;
	struct ixgbe_dcb_config temp_dcb_cfg;
	u8 hw_tcs;
	u8 dcb_set_bitmap;
	u8 dcbx_cap;
	enum ixgbe_fc_mode last_lfc_mode;

	int num_q_vectors;	/* current number of q_vectors for device */
	int max_q_vectors;	/* true count of q_vectors for device */
	struct ixgbe_ring_feature ring_feature[RING_F_ARRAY_SIZE];
	struct msix_entry *msix_entries;

	u32 test_icr;
	struct ixgbe_ring test_tx_ring;
	struct ixgbe_ring test_rx_ring;

	/* structs defined in ixgbe_hw.h */
	struct ixgbe_hw hw;
	u16 msg_enable;
	struct ixgbe_hw_stats stats;

	u64 tx_busy;
	unsigned int tx_ring_count;
	unsigned int xdp_ring_count;
	unsigned int rx_ring_count;

	u32 link_speed;
	bool link_up;
	unsigned long sfp_poll_time;
	unsigned long link_check_timeout;

	struct timer_list service_timer;
	struct work_struct service_task;

	struct hlist_head fdir_filter_list;
	unsigned long fdir_overflow; /* number of times ATR was backed off */
	union ixgbe_atr_input fdir_mask;
	int fdir_filter_count;
	u32 fdir_pballoc;
	u32 atr_sample_rate;
	spinlock_t fdir_perfect_lock;

#ifdef IXGBE_FCOE
	struct ixgbe_fcoe fcoe;
#endif /* IXGBE_FCOE */
	u8 __iomem *io_addr; /* Mainly for iounmap use */
	u32 wol;

	u16 bridge_mode;

	char eeprom_id[NVM_VER_SIZE];
	u16 eeprom_cap;

	u32 interrupt_event;
	u32 led_reg;

	struct ptp_clock *ptp_clock;
	struct ptp_clock_info ptp_caps;
	struct work_struct ptp_tx_work;
	struct sk_buff *ptp_tx_skb;
	struct hwtstamp_config tstamp_config;
	unsigned long ptp_tx_start;
	unsigned long last_overflow_check;
	unsigned long last_rx_ptp_check;
	unsigned long last_rx_timestamp;
	spinlock_t tmreg_lock;
	struct cyclecounter hw_cc;
	struct timecounter hw_tc;
	u32 base_incval;
	u32 tx_hwtstamp_timeouts;
	u32 tx_hwtstamp_skipped;
	u32 rx_hwtstamp_cleared;
	void (*ptp_setup_sdp)(struct ixgbe_adapter *);

	/* SR-IOV */
	DECLARE_BITMAP(active_vfs, IXGBE_MAX_VF_FUNCTIONS);
	unsigned int num_vfs;
	struct vf_data_storage *vfinfo;
	int vf_rate_link_speed;
	struct vf_macvlans vf_mvs;
	struct vf_macvlans *mv_list;

	u32 timer_event_accumulator;
	u32 vferr_refcount;
	struct ixgbe_mac_addr *mac_table;
	struct kobject *info_kobj;
#ifdef CONFIG_IXGBE_HWMON
	struct hwmon_buff *ixgbe_hwmon_buff;
#endif /* CONFIG_IXGBE_HWMON */
#ifdef CONFIG_DEBUG_FS
	struct dentry *ixgbe_dbg_adapter;
#endif /*CONFIG_DEBUG_FS*/

	u8 default_up;
	/* Bitmask indicating in use pools */
	DECLARE_BITMAP(fwd_bitmask, IXGBE_MAX_MACVLANS + 1);

#define IXGBE_MAX_LINK_HANDLE 10
	struct ixgbe_jump_table *jump_tables[IXGBE_MAX_LINK_HANDLE];
	unsigned long tables;

/* maximum number of RETA entries among all devices supported by ixgbe
 * driver: currently it's x550 device in non-SRIOV mode
 */
#define IXGBE_MAX_RETA_ENTRIES 512
	u8 rss_indir_tbl[IXGBE_MAX_RETA_ENTRIES];

#define IXGBE_RSS_KEY_SIZE     40  /* size of RSS Hash Key in bytes */
	u32 *rss_key;

#ifdef CONFIG_IXGBE_IPSEC
	struct ixgbe_ipsec *ipsec;
#endif /* CONFIG_IXGBE_IPSEC */
};

static inline int ixgbe_determine_xdp_q_idx(int cpu)
{
	if (static_key_enabled(&ixgbe_xdp_locking_key))
		return cpu % IXGBE_MAX_XDP_QS;
	else
		return cpu;
}

static inline
struct ixgbe_ring *ixgbe_determine_xdp_ring(struct ixgbe_adapter *adapter)
{
	int index = ixgbe_determine_xdp_q_idx(smp_processor_id());

	return adapter->xdp_ring[index];
}

static inline u8 ixgbe_max_rss_indices(struct ixgbe_adapter *adapter)
{
	switch (adapter->hw.mac.type) {
	case ixgbe_mac_82598EB:
	case ixgbe_mac_82599EB:
	case ixgbe_mac_X540:
		return IXGBE_MAX_RSS_INDICES;
	case ixgbe_mac_X550:
	case ixgbe_mac_X550EM_x:
	case ixgbe_mac_x550em_a:
		return IXGBE_MAX_RSS_INDICES_X550;
	default:
		return 0;
	}
}

struct ixgbe_fdir_filter {
	struct hlist_node fdir_node;
	union ixgbe_atr_input filter;
	u16 sw_idx;
	u64 action;
};

enum ixgbe_state_t {
	__IXGBE_TESTING,
	__IXGBE_RESETTING,
	__IXGBE_DOWN,
	__IXGBE_DISABLED,
	__IXGBE_REMOVING,
	__IXGBE_SERVICE_SCHED,
	__IXGBE_SERVICE_INITED,
	__IXGBE_IN_SFP_INIT,
	__IXGBE_PTP_RUNNING,
	__IXGBE_PTP_TX_IN_PROGRESS,
	__IXGBE_RESET_REQUESTED,
};

struct ixgbe_cb {
	union {				/* Union defining head/tail partner */
		struct sk_buff *head;
		struct sk_buff *tail;
	};
	dma_addr_t dma;
	u16 append_cnt;
	bool page_released;
};
#define IXGBE_CB(skb) ((struct ixgbe_cb *)(skb)->cb)

enum ixgbe_boards {
	board_82598,
	board_82599,
	board_X540,
	board_X550,
	board_X550EM_x,
	board_x550em_x_fw,
	board_x550em_a,
	board_x550em_a_fw,
};

extern const struct ixgbe_info ixgbe_82598_info;
extern const struct ixgbe_info ixgbe_82599_info;
extern const struct ixgbe_info ixgbe_X540_info;
extern const struct ixgbe_info ixgbe_X550_info;
extern const struct ixgbe_info ixgbe_X550EM_x_info;
extern const struct ixgbe_info ixgbe_x550em_x_fw_info;
extern const struct ixgbe_info ixgbe_x550em_a_info;
extern const struct ixgbe_info ixgbe_x550em_a_fw_info;
#ifdef CONFIG_IXGBE_DCB
extern const struct dcbnl_rtnl_ops ixgbe_dcbnl_ops;
#endif

extern char ixgbe_driver_name[];
#ifdef IXGBE_FCOE
extern char ixgbe_default_device_descr[];
#endif /* IXGBE_FCOE */

int ixgbe_open(struct net_device *netdev);
int ixgbe_close(struct net_device *netdev);
void ixgbe_up(struct ixgbe_adapter *adapter);
void ixgbe_down(struct ixgbe_adapter *adapter);
void ixgbe_reinit_locked(struct ixgbe_adapter *adapter);
void ixgbe_reset(struct ixgbe_adapter *adapter);
void ixgbe_set_ethtool_ops(struct net_device *netdev);
int ixgbe_setup_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
int ixgbe_setup_tx_resources(struct ixgbe_ring *);
void ixgbe_free_rx_resources(struct ixgbe_ring *);
void ixgbe_free_tx_resources(struct ixgbe_ring *);
void ixgbe_configure_rx_ring(struct ixgbe_adapter *, struct ixgbe_ring *);
void ixgbe_configure_tx_ring(struct ixgbe_adapter *, struct ixgbe_ring *);
void ixgbe_disable_rx(struct ixgbe_adapter *adapter);
void ixgbe_disable_tx(struct ixgbe_adapter *adapter);
void ixgbe_update_stats(struct ixgbe_adapter *adapter);
int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter);
bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id,
			 u16 subdevice_id);
#ifdef CONFIG_PCI_IOV
void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter);
#endif
int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter,
			 const u8 *addr, u16 queue);
int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter,
			 const u8 *addr, u16 queue);
void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid);
void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter);
netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *, struct ixgbe_adapter *,
				  struct ixgbe_ring *);
void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *,
				      struct ixgbe_tx_buffer *);
void ixgbe_alloc_rx_buffers(struct ixgbe_ring *, u16);
void ixgbe_write_eitr(struct ixgbe_q_vector *);
int ixgbe_poll(struct napi_struct *napi, int budget);
int ethtool_ioctl(struct ifreq *ifr);
s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw);
s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl);
s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl);
s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
					  union ixgbe_atr_hash_dword input,
					  union ixgbe_atr_hash_dword common,
					  u8 queue);
s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
				    union ixgbe_atr_input *input_mask);
s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
					  union ixgbe_atr_input *input,
					  u16 soft_id, u8 queue);
s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
					  union ixgbe_atr_input *input,
					  u16 soft_id);
void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
					  union ixgbe_atr_input *mask);
int ixgbe_update_ethtool_fdir_entry(struct ixgbe_adapter *adapter,
				    struct ixgbe_fdir_filter *input,
				    u16 sw_idx);
void ixgbe_set_rx_mode(struct net_device *netdev);
#ifdef CONFIG_IXGBE_DCB
void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter);
#endif
int ixgbe_setup_tc(struct net_device *dev, u8 tc);
void ixgbe_tx_ctxtdesc(struct ixgbe_ring *, u32, u32, u32, u32);
void ixgbe_do_reset(struct net_device *netdev);
#ifdef CONFIG_IXGBE_HWMON
void ixgbe_sysfs_exit(struct ixgbe_adapter *adapter);
int ixgbe_sysfs_init(struct ixgbe_adapter *adapter);
#endif /* CONFIG_IXGBE_HWMON */
#ifdef IXGBE_FCOE
void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter);
int ixgbe_fso(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first,
	      u8 *hdr_len);
int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter,
		   union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb);
int ixgbe_fcoe_ddp_get(struct net_device *netdev, u16 xid,
		       struct scatterlist *sgl, unsigned int sgc);
int ixgbe_fcoe_ddp_target(struct net_device *netdev, u16 xid,
			  struct scatterlist *sgl, unsigned int sgc);
int ixgbe_fcoe_ddp_put(struct net_device *netdev, u16 xid);
int ixgbe_setup_fcoe_ddp_resources(struct ixgbe_adapter *adapter);
void ixgbe_free_fcoe_ddp_resources(struct ixgbe_adapter *adapter);
int ixgbe_fcoe_enable(struct net_device *netdev);
int ixgbe_fcoe_disable(struct net_device *netdev);
#ifdef CONFIG_IXGBE_DCB
u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter);
u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up);
#endif /* CONFIG_IXGBE_DCB */
int ixgbe_fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type);
int ixgbe_fcoe_get_hbainfo(struct net_device *netdev,
			   struct netdev_fcoe_hbainfo *info);
u8 ixgbe_fcoe_get_tc(struct ixgbe_adapter *adapter);
#endif /* IXGBE_FCOE */
#ifdef CONFIG_DEBUG_FS
void ixgbe_dbg_adapter_init(struct ixgbe_adapter *adapter);
void ixgbe_dbg_adapter_exit(struct ixgbe_adapter *adapter);
void ixgbe_dbg_init(void);
void ixgbe_dbg_exit(void);
#else
static inline void ixgbe_dbg_adapter_init(struct ixgbe_adapter *adapter) {}
static inline void ixgbe_dbg_adapter_exit(struct ixgbe_adapter *adapter) {}
static inline void ixgbe_dbg_init(void) {}
static inline void ixgbe_dbg_exit(void) {}
#endif /* CONFIG_DEBUG_FS */
static inline struct netdev_queue *txring_txq(const struct ixgbe_ring *ring)
{
	return netdev_get_tx_queue(ring->netdev, ring->queue_index);
}

void ixgbe_ptp_init(struct ixgbe_adapter *adapter);
void ixgbe_ptp_suspend(struct ixgbe_adapter *adapter);
void ixgbe_ptp_stop(struct ixgbe_adapter *adapter);
void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter);
void ixgbe_ptp_rx_hang(struct ixgbe_adapter *adapter);
void ixgbe_ptp_tx_hang(struct ixgbe_adapter *adapter);
void ixgbe_ptp_rx_pktstamp(struct ixgbe_q_vector *, struct sk_buff *);
void ixgbe_ptp_rx_rgtstamp(struct ixgbe_q_vector *, struct sk_buff *skb);
static inline void ixgbe_ptp_rx_hwtstamp(struct ixgbe_ring *rx_ring,
					 union ixgbe_adv_rx_desc *rx_desc,
					 struct sk_buff *skb)
{
	if (unlikely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_TSIP))) {
		ixgbe_ptp_rx_pktstamp(rx_ring->q_vector, skb);
		return;
	}

	if (unlikely(!ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_TS)))
		return;

	ixgbe_ptp_rx_rgtstamp(rx_ring->q_vector, skb);

	/* Update the last_rx_timestamp timer in order to enable watchdog check
	 * for error case of latched timestamp on a dropped packet.
	 */
	rx_ring->last_rx_timestamp = jiffies;
}

int ixgbe_ptp_set_ts_config(struct ixgbe_adapter *adapter, struct ifreq *ifr);
int ixgbe_ptp_get_ts_config(struct ixgbe_adapter *adapter, struct ifreq *ifr);
void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter);
void ixgbe_ptp_reset(struct ixgbe_adapter *adapter);
void ixgbe_ptp_check_pps_event(struct ixgbe_adapter *adapter);
#ifdef CONFIG_PCI_IOV
void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter);
#endif

netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
				  struct ixgbe_adapter *adapter,
				  struct ixgbe_ring *tx_ring);
u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter);
void ixgbe_store_key(struct ixgbe_adapter *adapter);
void ixgbe_store_reta(struct ixgbe_adapter *adapter);
s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
		       u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
#ifdef CONFIG_IXGBE_IPSEC
void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter);
void ixgbe_stop_ipsec_offload(struct ixgbe_adapter *adapter);
void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter);
void ixgbe_ipsec_rx(struct ixgbe_ring *rx_ring,
		    union ixgbe_adv_rx_desc *rx_desc,
		    struct sk_buff *skb);
int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first,
		   struct ixgbe_ipsec_tx_data *itd);
void ixgbe_ipsec_vf_clear(struct ixgbe_adapter *adapter, u32 vf);
int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *mbuf, u32 vf);
int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter, u32 *mbuf, u32 vf);
#else
static inline void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter) { }
static inline void ixgbe_stop_ipsec_offload(struct ixgbe_adapter *adapter) { }
static inline void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter) { }
static inline void ixgbe_ipsec_rx(struct ixgbe_ring *rx_ring,
				  union ixgbe_adv_rx_desc *rx_desc,
				  struct sk_buff *skb) { }
static inline int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring,
				 struct ixgbe_tx_buffer *first,
				 struct ixgbe_ipsec_tx_data *itd) { return 0; }
static inline void ixgbe_ipsec_vf_clear(struct ixgbe_adapter *adapter,
					u32 vf) { }
static inline int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter,
					u32 *mbuf, u32 vf) { return -EACCES; }
static inline int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter,
					u32 *mbuf, u32 vf) { return -EACCES; }
#endif /* CONFIG_IXGBE_IPSEC */

static inline bool ixgbe_enabled_xdp_adapter(struct ixgbe_adapter *adapter)
{
	return !!adapter->xdp_prog;
}

#endif /* _IXGBE_H_ */