/*
 * Copyright (c) 2015-2016, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#ifndef __MLX5_EN_H__
#define __MLX5_EN_H__

#include <linux/if_vlan.h>
#include <linux/etherdevice.h>
#include <linux/timecounter.h>
#include <linux/net_tstamp.h>
#include <linux/crash_dump.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/qp.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/port.h>
#include <linux/mlx5/vport.h>
#include <linux/mlx5/transobj.h>
#include <linux/mlx5/fs.h>
#include <linux/rhashtable.h>
#include <net/udp_tunnel.h>
#include <net/switchdev.h>
#include <net/xdp.h>
#include <linux/dim.h>
#include <linux/bits.h>
#include "wq.h"
#include "mlx5_core.h"
#include "en_stats.h"
#include "en/dcbnl.h"
#include "en/fs.h"
#include "lib/hv_vhca.h"

extern const struct net_device_ops mlx5e_netdev_ops;
struct page_pool;

#define MLX5E_METADATA_ETHER_TYPE (0x8CE4)
#define MLX5E_METADATA_ETHER_LEN 8

#define MLX5_SET_CFG(p, f, v) MLX5_SET(create_flow_group_in, p, f, v)

#define MLX5E_ETH_HARD_MTU (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)

#define MLX5E_HW2SW_MTU(params, hwmtu) ((hwmtu) - ((params)->hard_mtu))
#define MLX5E_SW2HW_MTU(params, swmtu) ((swmtu) + ((params)->hard_mtu))

#define MLX5E_MAX_NUM_TC        8

#define MLX5_RX_HEADROOM NET_SKB_PAD
#define MLX5_SKB_FRAG_SZ(len)   (SKB_DATA_ALIGN(len) +  \
                                 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))

#define MLX5E_RX_MAX_HEAD (256)

#define MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(mdev) \
        (6 + MLX5_CAP_GEN(mdev, cache_line_128byte)) /* HW restriction */
#define MLX5_MPWRQ_LOG_STRIDE_SZ(mdev, req) \
        max_t(u32, MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(mdev), req)
#define MLX5_MPWRQ_DEF_LOG_STRIDE_SZ(mdev) \
        MLX5_MPWRQ_LOG_STRIDE_SZ(mdev, order_base_2(MLX5E_RX_MAX_HEAD))

#define MLX5_MPWRQ_LOG_WQE_SZ                   18
#define MLX5_MPWRQ_WQE_PAGE_ORDER  (MLX5_MPWRQ_LOG_WQE_SZ - PAGE_SHIFT > 0 ? \
                                    MLX5_MPWRQ_LOG_WQE_SZ - PAGE_SHIFT : 0)
#define MLX5_MPWRQ_PAGES_PER_WQE                BIT(MLX5_MPWRQ_WQE_PAGE_ORDER)

#define MLX5_MTT_OCTW(npages) (ALIGN(npages, 8) / 2)
/* Add another page to MLX5E_REQUIRED_WQE_MTTS as a buffer between
 * WQEs, This page will absorb write overflow by the hardware, when
 * receiving packets larger than MTU. These oversize packets are
 * dropped by the driver at a later stage.
 */
#define MLX5E_REQUIRED_WQE_MTTS         (ALIGN(MLX5_MPWRQ_PAGES_PER_WQE + 1, 8))
#define MLX5E_LOG_ALIGNED_MPWQE_PPW     (ilog2(MLX5E_REQUIRED_WQE_MTTS))
#define MLX5E_REQUIRED_MTTS(wqes)       (wqes * MLX5E_REQUIRED_WQE_MTTS)
#define MLX5E_MAX_RQ_NUM_MTTS   \
        ((1 << 16) * 2) /* So that MLX5_MTT_OCTW(num_mtts) fits into u16 */
#define MLX5E_ORDER2_MAX_PACKET_MTU (order_base_2(10 * 1024))
#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW    \
                (ilog2(MLX5E_MAX_RQ_NUM_MTTS / MLX5E_REQUIRED_WQE_MTTS))
#define MLX5E_LOG_MAX_RQ_NUM_PACKETS_MPW \
        (MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW + \
         (MLX5_MPWRQ_LOG_WQE_SZ - MLX5E_ORDER2_MAX_PACKET_MTU))

#define MLX5E_MIN_SKB_FRAG_SZ           (MLX5_SKB_FRAG_SZ(MLX5_RX_HEADROOM))
#define MLX5E_LOG_MAX_RX_WQE_BULK       \
        (ilog2(PAGE_SIZE / roundup_pow_of_two(MLX5E_MIN_SKB_FRAG_SZ)))

#define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE                0x6
#define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE                0xa
#define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE                0xd

#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE (1 + MLX5E_LOG_MAX_RX_WQE_BULK)
#define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE                0xa
#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE min_t(u8, 0xd, \
                                               MLX5E_LOG_MAX_RQ_NUM_PACKETS_MPW)

#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW            0x2

#define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ                 (64 * 1024)
#define MLX5E_DEFAULT_LRO_TIMEOUT                       32
#define MLX5E_LRO_TIMEOUT_ARR_SIZE                      4

#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC      0x10
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE 0x3
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS      0x20
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC      0x10
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC_FROM_CQE 0x10
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS      0x20
#define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES                0x80
#define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES_MPW            0x2

#define MLX5E_LOG_INDIR_RQT_SIZE       0x7
#define MLX5E_INDIR_RQT_SIZE           BIT(MLX5E_LOG_INDIR_RQT_SIZE)
#define MLX5E_MIN_NUM_CHANNELS         0x1
#define MLX5E_MAX_NUM_CHANNELS         MLX5E_INDIR_RQT_SIZE
#define MLX5E_MAX_NUM_SQS              (MLX5E_MAX_NUM_CHANNELS * MLX5E_MAX_NUM_TC)
#define MLX5E_TX_CQ_POLL_BUDGET        128
#define MLX5E_TX_XSK_POLL_BUDGET       64
#define MLX5E_SQ_RECOVER_MIN_INTERVAL  500 /* msecs */

#define MLX5E_UMR_WQE_INLINE_SZ \
        (sizeof(struct mlx5e_umr_wqe) + \
         ALIGN(MLX5_MPWRQ_PAGES_PER_WQE * sizeof(struct mlx5_mtt), \
               MLX5_UMR_MTT_ALIGNMENT))
#define MLX5E_UMR_WQEBBS \
        (DIV_ROUND_UP(MLX5E_UMR_WQE_INLINE_SZ, MLX5_SEND_WQE_BB))

#define MLX5E_MSG_LEVEL                 NETIF_MSG_LINK

#define mlx5e_dbg(mlevel, priv, format, ...)                    \
do {                                                            \
        if (NETIF_MSG_##mlevel & (priv)->msglevel)              \
                netdev_warn(priv->netdev, format,               \
                            ##__VA_ARGS__);                     \
} while (0)

enum mlx5e_rq_group {
        MLX5E_RQ_GROUP_REGULAR,
        MLX5E_RQ_GROUP_XSK,
#define MLX5E_NUM_RQ_GROUPS(g) (1 + MLX5E_RQ_GROUP_##g)
};

static inline u8 mlx5e_get_num_lag_ports(struct mlx5_core_dev *mdev)
{
        if (mlx5_lag_is_lacp_owner(mdev))
                return 1;

        return clamp_t(u8, MLX5_CAP_GEN(mdev, num_lag_ports), 1, MLX5_MAX_PORTS);
}

static inline u16 mlx5_min_rx_wqes(int wq_type, u32 wq_size)
{
        switch (wq_type) {
        case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
                return min_t(u16, MLX5E_PARAMS_DEFAULT_MIN_RX_WQES_MPW,
                             wq_size / 2);
        default:
                return min_t(u16, MLX5E_PARAMS_DEFAULT_MIN_RX_WQES,
                             wq_size / 2);
        }
}

/* Use this function to get max num channels (rxqs/txqs) only to create netdev */
static inline int mlx5e_get_max_num_channels(struct mlx5_core_dev *mdev)
{
        return is_kdump_kernel() ?
                MLX5E_MIN_NUM_CHANNELS :
                min_t(int, mlx5_comp_vectors_count(mdev), MLX5E_MAX_NUM_CHANNELS);
}

struct mlx5e_tx_wqe {
        struct mlx5_wqe_ctrl_seg ctrl;
        struct mlx5_wqe_eth_seg  eth;
        struct mlx5_wqe_data_seg data[0];
};

struct mlx5e_rx_wqe_ll {
        struct mlx5_wqe_srq_next_seg  next;
        struct mlx5_wqe_data_seg      data[];
};

struct mlx5e_rx_wqe_cyc {
        struct mlx5_wqe_data_seg      data[0];
};

struct mlx5e_umr_wqe {
        struct mlx5_wqe_ctrl_seg       ctrl;
        struct mlx5_wqe_umr_ctrl_seg   uctrl;
        struct mlx5_mkey_seg           mkc;
        struct mlx5_mtt                inline_mtts[0];
};

extern const char mlx5e_self_tests[][ETH_GSTRING_LEN];

enum mlx5e_priv_flag {
        MLX5E_PFLAG_RX_CQE_BASED_MODER,
        MLX5E_PFLAG_TX_CQE_BASED_MODER,
        MLX5E_PFLAG_RX_CQE_COMPRESS,
        MLX5E_PFLAG_RX_STRIDING_RQ,
        MLX5E_PFLAG_RX_NO_CSUM_COMPLETE,
        MLX5E_PFLAG_XDP_TX_MPWQE,
        MLX5E_NUM_PFLAGS, /* Keep last */
};

#define MLX5E_SET_PFLAG(params, pflag, enable)                  \
        do {                                                    \
                if (enable)                                     \
                        (params)->pflags |= BIT(pflag);         \
                else                                            \
                        (params)->pflags &= ~(BIT(pflag));      \
        } while (0)

#define MLX5E_GET_PFLAG(params, pflag) (!!((params)->pflags & (BIT(pflag))))

struct mlx5e_params {
        u8  log_sq_size;
        u8  rq_wq_type;
        u8  log_rq_mtu_frames;
        u16 num_channels;
        u8  num_tc;
        bool rx_cqe_compress_def;
        bool tunneled_offload_en;
        struct dim_cq_moder rx_cq_moderation;
        struct dim_cq_moder tx_cq_moderation;
        bool lro_en;
        u8  tx_min_inline_mode;
        bool vlan_strip_disable;
        bool scatter_fcs_en;
        bool rx_dim_enabled;
        bool tx_dim_enabled;
        u32 lro_timeout;
        u32 pflags;
        struct bpf_prog *xdp_prog;
        struct mlx5e_xsk *xsk;
        unsigned int sw_mtu;
        int hard_mtu;
};

enum {
        MLX5E_RQ_STATE_ENABLED,
        MLX5E_RQ_STATE_RECOVERING,
        MLX5E_RQ_STATE_AM,
        MLX5E_RQ_STATE_NO_CSUM_COMPLETE,
        MLX5E_RQ_STATE_CSUM_FULL, /* cqe_csum_full hw bit is set */
        MLX5E_RQ_STATE_FPGA_TLS, /* FPGA TLS enabled */
};

struct mlx5e_cq {
        /* data path - accessed per cqe */
        struct mlx5_cqwq           wq;

        /* data path - accessed per napi poll */
        u16                        event_ctr;
        struct napi_struct        *napi;
        struct mlx5_core_cq        mcq;
        struct mlx5e_channel      *channel;

        /* control */
        struct mlx5_core_dev      *mdev;
        struct mlx5_wq_ctrl        wq_ctrl;
} ____cacheline_aligned_in_smp;

struct mlx5e_cq_decomp {
        /* cqe decompression */
        struct mlx5_cqe64          title;
        struct mlx5_mini_cqe8      mini_arr[MLX5_MINI_CQE_ARRAY_SIZE];
        u8                         mini_arr_idx;
        u16                        left;
        u16                        wqe_counter;
} ____cacheline_aligned_in_smp;

enum mlx5e_dma_map_type {
        MLX5E_DMA_MAP_SINGLE,
        MLX5E_DMA_MAP_PAGE
};

struct mlx5e_sq_dma {
        dma_addr_t              addr;
        u32                     size;
        enum mlx5e_dma_map_type type;
};

enum {
        MLX5E_SQ_STATE_ENABLED,
        MLX5E_SQ_STATE_RECOVERING,
        MLX5E_SQ_STATE_IPSEC,
        MLX5E_SQ_STATE_AM,
        MLX5E_SQ_STATE_TLS,
        MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE,
        MLX5E_SQ_STATE_PENDING_XSK_TX,
};

struct mlx5e_txqsq {
        /* data path */

        /* dirtied @completion */
        u16                        cc;
        u32                        dma_fifo_cc;
        struct dim                 dim; /* Adaptive Moderation */

        /* dirtied @xmit */
        u16                        pc ____cacheline_aligned_in_smp;
        u32                        dma_fifo_pc;

        struct mlx5e_cq            cq;

        /* read only */
        struct mlx5_wq_cyc         wq;
        u32                        dma_fifo_mask;
        struct mlx5e_sq_stats     *stats;
        struct {
                struct mlx5e_sq_dma       *dma_fifo;
                struct mlx5e_tx_wqe_info  *wqe_info;
        } db;
        void __iomem              *uar_map;
        struct netdev_queue       *txq;
        u32                        sqn;
        u16                        stop_room;
        u8                         min_inline_mode;
        struct device             *pdev;
        __be32                     mkey_be;
        unsigned long              state;
        unsigned int               hw_mtu;
        struct hwtstamp_config    *tstamp;
        struct mlx5_clock         *clock;

        /* control path */
        struct mlx5_wq_ctrl        wq_ctrl;
        struct mlx5e_channel      *channel;
        int                        ch_ix;
        int                        txq_ix;
        u32                        rate_limit;
        struct work_struct         recover_work;
} ____cacheline_aligned_in_smp;

struct mlx5e_dma_info {
        dma_addr_t addr;
        union {
                struct page *page;
                struct xdp_buff *xsk;
        };
};

/* XDP packets can be transmitted in different ways. On completion, we need to
 * distinguish between them to clean up things in a proper way.
 */
enum mlx5e_xdp_xmit_mode {
        /* An xdp_frame was transmitted due to either XDP_REDIRECT from another
         * device or XDP_TX from an XSK RQ. The frame has to be unmapped and
         * returned.
         */
        MLX5E_XDP_XMIT_MODE_FRAME,

        /* The xdp_frame was created in place as a result of XDP_TX from a
         * regular RQ. No DMA remapping happened, and the page belongs to us.
         */
        MLX5E_XDP_XMIT_MODE_PAGE,

        /* No xdp_frame was created at all, the transmit happened from a UMEM
         * page. The UMEM Completion Ring producer pointer has to be increased.
         */
        MLX5E_XDP_XMIT_MODE_XSK,
};

struct mlx5e_xdp_info {
        enum mlx5e_xdp_xmit_mode mode;
        union {
                struct {
                        struct xdp_frame *xdpf;
                        dma_addr_t dma_addr;
                } frame;
                struct {
                        struct mlx5e_rq *rq;
                        struct mlx5e_dma_info di;
                } page;
        };
};

struct mlx5e_xdp_xmit_data {
        dma_addr_t  dma_addr;
        void       *data;
        u32         len;
};

struct mlx5e_xdp_info_fifo {
        struct mlx5e_xdp_info *xi;
        u32 *cc;
        u32 *pc;
        u32 mask;
};

struct mlx5e_xdp_mpwqe {
        /* Current MPWQE session */
        struct mlx5e_tx_wqe *wqe;
        u8                   ds_count;
        u8                   pkt_count;
        u8                   inline_on;
};

struct mlx5e_xdpsq;
typedef int (*mlx5e_fp_xmit_xdp_frame_check)(struct mlx5e_xdpsq *);
typedef bool (*mlx5e_fp_xmit_xdp_frame)(struct mlx5e_xdpsq *,
                                        struct mlx5e_xdp_xmit_data *,
                                        struct mlx5e_xdp_info *,
                                        int);

struct mlx5e_xdpsq {
        /* data path */

        /* dirtied @completion */
        u32                        xdpi_fifo_cc;
        u16                        cc;

        /* dirtied @xmit */
        u32                        xdpi_fifo_pc ____cacheline_aligned_in_smp;
        u16                        pc;
        struct mlx5_wqe_ctrl_seg   *doorbell_cseg;
        struct mlx5e_xdp_mpwqe     mpwqe;

        struct mlx5e_cq            cq;

        /* read only */
        struct xdp_umem           *umem;
        struct mlx5_wq_cyc         wq;
        struct mlx5e_xdpsq_stats  *stats;
        mlx5e_fp_xmit_xdp_frame_check xmit_xdp_frame_check;
        mlx5e_fp_xmit_xdp_frame    xmit_xdp_frame;
        struct {
                struct mlx5e_xdp_wqe_info *wqe_info;
                struct mlx5e_xdp_info_fifo xdpi_fifo;
        } db;
        void __iomem              *uar_map;
        u32                        sqn;
        struct device             *pdev;
        __be32                     mkey_be;
        u8                         min_inline_mode;
        unsigned long              state;
        unsigned int               hw_mtu;

        /* control path */
        struct mlx5_wq_ctrl        wq_ctrl;
        struct mlx5e_channel      *channel;
} ____cacheline_aligned_in_smp;

struct mlx5e_icosq {
        /* data path */
        u16                        cc;
        u16                        pc;

        struct mlx5_wqe_ctrl_seg  *doorbell_cseg;
        struct mlx5e_cq            cq;

        /* write@xmit, read@completion */
        struct {
                struct mlx5e_icosq_wqe_info *wqe_info;
        } db;

        /* read only */
        struct mlx5_wq_cyc         wq;
        void __iomem              *uar_map;
        u32                        sqn;
        unsigned long              state;

        /* control path */
        struct mlx5_wq_ctrl        wq_ctrl;
        struct mlx5e_channel      *channel;

        struct work_struct         recover_work;
} ____cacheline_aligned_in_smp;

struct mlx5e_wqe_frag_info {
        struct mlx5e_dma_info *di;
        u32 offset;
        bool last_in_page;
};

struct mlx5e_umr_dma_info {
        struct mlx5e_dma_info  dma_info[MLX5_MPWRQ_PAGES_PER_WQE];
};

struct mlx5e_mpw_info {
        struct mlx5e_umr_dma_info umr;
        u16 consumed_strides;
        DECLARE_BITMAP(xdp_xmit_bitmap, MLX5_MPWRQ_PAGES_PER_WQE);
};

#define MLX5E_MAX_RX_FRAGS 4

/* a single cache unit is capable to serve one napi call (for non-striding rq)
 * or a MPWQE (for striding rq).
 */
#define MLX5E_CACHE_UNIT        (MLX5_MPWRQ_PAGES_PER_WQE > NAPI_POLL_WEIGHT ? \
                                 MLX5_MPWRQ_PAGES_PER_WQE : NAPI_POLL_WEIGHT)
#define MLX5E_CACHE_SIZE        (4 * roundup_pow_of_two(MLX5E_CACHE_UNIT))
struct mlx5e_page_cache {
        u32 head;
        u32 tail;
        struct mlx5e_dma_info page_cache[MLX5E_CACHE_SIZE];
};

struct mlx5e_rq;
typedef void (*mlx5e_fp_handle_rx_cqe)(struct mlx5e_rq*, struct mlx5_cqe64*);
typedef struct sk_buff *
(*mlx5e_fp_skb_from_cqe_mpwrq)(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi,
                               u16 cqe_bcnt, u32 head_offset, u32 page_idx);
typedef struct sk_buff *
(*mlx5e_fp_skb_from_cqe)(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,
                         struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt);
typedef bool (*mlx5e_fp_post_rx_wqes)(struct mlx5e_rq *rq);
typedef void (*mlx5e_fp_dealloc_wqe)(struct mlx5e_rq*, u16);

int mlx5e_rq_set_handlers(struct mlx5e_rq *rq, struct mlx5e_params *params, bool xsk);

enum mlx5e_rq_flag {
        MLX5E_RQ_FLAG_XDP_XMIT,
        MLX5E_RQ_FLAG_XDP_REDIRECT,
};

struct mlx5e_rq_frag_info {
        int frag_size;
        int frag_stride;
};

struct mlx5e_rq_frags_info {
        struct mlx5e_rq_frag_info arr[MLX5E_MAX_RX_FRAGS];
        u8 num_frags;
        u8 log_num_frags;
        u8 wqe_bulk;
};

struct mlx5e_rq {
        /* data path */
        union {
                struct {
                        struct mlx5_wq_cyc          wq;
                        struct mlx5e_wqe_frag_info *frags;
                        struct mlx5e_dma_info      *di;
                        struct mlx5e_rq_frags_info  info;
                        mlx5e_fp_skb_from_cqe       skb_from_cqe;
                } wqe;
                struct {
                        struct mlx5_wq_ll      wq;
                        struct mlx5e_umr_wqe   umr_wqe;
                        struct mlx5e_mpw_info *info;
                        mlx5e_fp_skb_from_cqe_mpwrq skb_from_cqe_mpwrq;
                        u16                    num_strides;
                        u16                    actual_wq_head;
                        u8                     log_stride_sz;
                        u8                     umr_in_progress;
                        u8                     umr_last_bulk;
                        u8                     umr_completed;
                } mpwqe;
        };
        struct {
                u16            headroom;
                u32            frame0_sz;
                u8             map_dir;   /* dma map direction */
        } buff;

        struct mlx5e_channel  *channel;
        struct device         *pdev;
        struct net_device     *netdev;
        struct mlx5e_rq_stats *stats;
        struct mlx5e_cq        cq;
        struct mlx5e_cq_decomp cqd;
        struct mlx5e_page_cache page_cache;
        struct hwtstamp_config *tstamp;
        struct mlx5_clock      *clock;

        mlx5e_fp_handle_rx_cqe handle_rx_cqe;
        mlx5e_fp_post_rx_wqes  post_wqes;
        mlx5e_fp_dealloc_wqe   dealloc_wqe;

        unsigned long          state;
        int                    ix;
        unsigned int           hw_mtu;

        struct dim         dim; /* Dynamic Interrupt Moderation */

        /* XDP */
        struct bpf_prog __rcu *xdp_prog;
        struct mlx5e_xdpsq    *xdpsq;
        DECLARE_BITMAP(flags, 8);
        struct page_pool      *page_pool;

        /* AF_XDP zero-copy */
        struct xdp_umem       *umem;

        struct work_struct     recover_work;

        /* control */
        struct mlx5_wq_ctrl    wq_ctrl;
        __be32                 mkey_be;
        u8                     wq_type;
        u32                    rqn;
        struct mlx5_core_dev  *mdev;
        struct mlx5_core_mkey  umr_mkey;
        struct mlx5e_dma_info  wqe_overflow;

        /* XDP read-mostly */
        struct xdp_rxq_info    xdp_rxq;
} ____cacheline_aligned_in_smp;

enum mlx5e_channel_state {
        MLX5E_CHANNEL_STATE_XSK,
        MLX5E_CHANNEL_NUM_STATES
};

struct mlx5e_channel {
        /* data path */
        struct mlx5e_rq            rq;
        struct mlx5e_xdpsq         rq_xdpsq;
        struct mlx5e_txqsq         sq[MLX5E_MAX_NUM_TC];
        struct mlx5e_icosq         icosq;   /* internal control operations */
        bool                       xdp;
        struct napi_struct         napi;
        struct device             *pdev;
        struct net_device         *netdev;
        __be32                     mkey_be;
        u8                         num_tc;
        u8                         lag_port;

        /* XDP_REDIRECT */
        struct mlx5e_xdpsq         xdpsq;

        /* AF_XDP zero-copy */
        struct mlx5e_rq            xskrq;
        struct mlx5e_xdpsq         xsksq;

        /* Async ICOSQ */
        struct mlx5e_icosq         async_icosq;
        /* async_icosq can be accessed from any CPU - the spinlock protects it. */
        spinlock_t                 async_icosq_lock;

        /* data path - accessed per napi poll */
        struct irq_desc *irq_desc;
        struct mlx5e_ch_stats     *stats;

        /* control */
        struct mlx5e_priv         *priv;
        struct mlx5_core_dev      *mdev;
        struct hwtstamp_config    *tstamp;
        DECLARE_BITMAP(state, MLX5E_CHANNEL_NUM_STATES);
        int                        ix;
        int                        cpu;
};

struct mlx5e_channels {
        struct mlx5e_channel **c;
        unsigned int           num;
        struct mlx5e_params    params;
};

struct mlx5e_channel_stats {
        struct mlx5e_ch_stats ch;
        struct mlx5e_sq_stats sq[MLX5E_MAX_NUM_TC];
        struct mlx5e_rq_stats rq;
        struct mlx5e_rq_stats xskrq;
        struct mlx5e_xdpsq_stats rq_xdpsq;
        struct mlx5e_xdpsq_stats xdpsq;
        struct mlx5e_xdpsq_stats xsksq;
} ____cacheline_aligned_in_smp;

enum {
        MLX5E_STATE_OPENED,
        MLX5E_STATE_DESTROYING,
        MLX5E_STATE_XDP_TX_ENABLED,
        MLX5E_STATE_XDP_ACTIVE,
};

struct mlx5e_rqt {
        u32              rqtn;
        bool             enabled;
};

struct mlx5e_tir {
        u32               tirn;
        struct mlx5e_rqt  rqt;
        struct list_head  list;
};

enum {
        MLX5E_TC_PRIO = 0,
        MLX5E_NIC_PRIO
};

struct mlx5e_rss_params {
        u32     indirection_rqt[MLX5E_INDIR_RQT_SIZE];
        u32     rx_hash_fields[MLX5E_NUM_INDIR_TIRS];
        u8      toeplitz_hash_key[40];
        u8      hfunc;
};

struct mlx5e_modify_sq_param {
        int curr_state;
        int next_state;
        int rl_update;
        int rl_index;
};

#if IS_ENABLED(CONFIG_PCI_HYPERV_INTERFACE)
struct mlx5e_hv_vhca_stats_agent {
        struct mlx5_hv_vhca_agent *agent;
        struct delayed_work        work;
        u16                        delay;
        void                      *buf;
};
#endif

struct mlx5e_xsk {
        /* UMEMs are stored separately from channels, because we don't want to
         * lose them when channels are recreated. The kernel also stores UMEMs,
         * but it doesn't distinguish between zero-copy and non-zero-copy UMEMs,
         * so rely on our mechanism.
         */
        struct xdp_umem **umems;
        u16 refcnt;
        bool ever_used;
};

/* Temporary storage for variables that are allocated when struct mlx5e_priv is
 * initialized, and used where we can't allocate them because that functions
 * must not fail. Use with care and make sure the same variable is not used
 * simultaneously by multiple users.
 */
struct mlx5e_scratchpad {
        cpumask_var_t cpumask;
};

struct mlx5e_priv {
        /* priv data path fields - start */
        struct mlx5e_txqsq *txq2sq[MLX5E_MAX_NUM_CHANNELS * MLX5E_MAX_NUM_TC];
        int channel_tc2realtxq[MLX5E_MAX_NUM_CHANNELS][MLX5E_MAX_NUM_TC];
#ifdef CONFIG_MLX5_CORE_EN_DCB
        struct mlx5e_dcbx_dp       dcbx_dp;
#endif
        /* priv data path fields - end */

        u32                        msglevel;
        unsigned long              state;
        struct mutex               state_lock; /* Protects Interface state */
        struct mlx5e_rq            drop_rq;

        struct mlx5e_channels      channels;
        u32                        tisn[MLX5_MAX_PORTS][MLX5E_MAX_NUM_TC];
        struct mlx5e_rqt           indir_rqt;
        struct mlx5e_tir           indir_tir[MLX5E_NUM_INDIR_TIRS];
        struct mlx5e_tir           inner_indir_tir[MLX5E_NUM_INDIR_TIRS];
        struct mlx5e_tir           direct_tir[MLX5E_MAX_NUM_CHANNELS];
        struct mlx5e_tir           xsk_tir[MLX5E_MAX_NUM_CHANNELS];
        struct mlx5e_rss_params    rss_params;
        u32                        tx_rates[MLX5E_MAX_NUM_SQS];

        struct mlx5e_flow_steering fs;

        struct workqueue_struct    *wq;
        struct work_struct         update_carrier_work;
        struct work_struct         set_rx_mode_work;
        struct work_struct         tx_timeout_work;
        struct work_struct         update_stats_work;
        struct work_struct         monitor_counters_work;
        struct mlx5_nb             monitor_counters_nb;

        struct mlx5_core_dev      *mdev;
        struct net_device         *netdev;
        struct mlx5e_stats         stats;
        struct mlx5e_channel_stats channel_stats[MLX5E_MAX_NUM_CHANNELS];
        u16                        max_nch;
        u8                         max_opened_tc;
        struct hwtstamp_config     tstamp;
        u16                        q_counter;
        u16                        drop_rq_q_counter;
        struct notifier_block      events_nb;

        struct udp_tunnel_nic_info nic_info;
#ifdef CONFIG_MLX5_CORE_EN_DCB
        struct mlx5e_dcbx          dcbx;
#endif

        const struct mlx5e_profile *profile;
        void                      *ppriv;
#ifdef CONFIG_MLX5_EN_IPSEC
        struct mlx5e_ipsec        *ipsec;
#endif
#ifdef CONFIG_MLX5_EN_TLS
        struct mlx5e_tls          *tls;
#endif
        struct devlink_health_reporter *tx_reporter;
        struct devlink_health_reporter *rx_reporter;
        struct devlink_port            dl_port;
        struct mlx5e_xsk           xsk;
#if IS_ENABLED(CONFIG_PCI_HYPERV_INTERFACE)
        struct mlx5e_hv_vhca_stats_agent stats_agent;
#endif
        struct mlx5e_scratchpad    scratchpad;
};

struct mlx5e_rx_handlers {
        mlx5e_fp_handle_rx_cqe handle_rx_cqe;
        mlx5e_fp_handle_rx_cqe handle_rx_cqe_mpwqe;
};

extern const struct mlx5e_rx_handlers mlx5e_rx_handlers_nic;

struct mlx5e_profile {
        int     (*init)(struct mlx5_core_dev *mdev,
                        struct net_device *netdev,
                        const struct mlx5e_profile *profile, void *ppriv);
        void    (*cleanup)(struct mlx5e_priv *priv);
        int     (*init_rx)(struct mlx5e_priv *priv);
        void    (*cleanup_rx)(struct mlx5e_priv *priv);
        int     (*init_tx)(struct mlx5e_priv *priv);
        void    (*cleanup_tx)(struct mlx5e_priv *priv);
        void    (*enable)(struct mlx5e_priv *priv);
        void    (*disable)(struct mlx5e_priv *priv);
        int     (*update_rx)(struct mlx5e_priv *priv);
        void    (*update_stats)(struct mlx5e_priv *priv);
        void    (*update_carrier)(struct mlx5e_priv *priv);
        unsigned int (*stats_grps_num)(struct mlx5e_priv *priv);
        mlx5e_stats_grp_t *stats_grps;
        const struct mlx5e_rx_handlers *rx_handlers;
        int     max_tc;
        u8      rq_groups;
};

void mlx5e_build_ptys2ethtool_map(void);

bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev);
bool mlx5e_striding_rq_possible(struct mlx5_core_dev *mdev,
                                struct mlx5e_params *params);

void mlx5e_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats);
void mlx5e_fold_sw_stats64(struct mlx5e_priv *priv, struct rtnl_link_stats64 *s);

void mlx5e_init_l2_addr(struct mlx5e_priv *priv);
int mlx5e_self_test_num(struct mlx5e_priv *priv);
void mlx5e_self_test(struct net_device *ndev, struct ethtool_test *etest,
                     u64 *buf);
void mlx5e_set_rx_mode_work(struct work_struct *work);

int mlx5e_hwstamp_set(struct mlx5e_priv *priv, struct ifreq *ifr);
int mlx5e_hwstamp_get(struct mlx5e_priv *priv, struct ifreq *ifr);
int mlx5e_modify_rx_cqe_compression_locked(struct mlx5e_priv *priv, bool val);

int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
                          u16 vid);
int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
                           u16 vid);
void mlx5e_timestamp_init(struct mlx5e_priv *priv);

struct mlx5e_redirect_rqt_param {
        bool is_rss;
        union {
                u32 rqn; /* Direct RQN (Non-RSS) */
                struct {
                        u8 hfunc;
                        struct mlx5e_channels *channels;
                } rss; /* RSS data */
        };
};

int mlx5e_redirect_rqt(struct mlx5e_priv *priv, u32 rqtn, int sz,
                       struct mlx5e_redirect_rqt_param rrp);
void mlx5e_build_indir_tir_ctx_hash(struct mlx5e_rss_params *rss_params,
                                    const struct mlx5e_tirc_config *ttconfig,
                                    void *tirc, bool inner);
void mlx5e_modify_tirs_hash(struct mlx5e_priv *priv, void *in);
struct mlx5e_tirc_config mlx5e_tirc_get_default_config(enum mlx5e_traffic_types tt);

struct mlx5e_xsk_param;

struct mlx5e_rq_param;
int mlx5e_open_rq(struct mlx5e_channel *c, struct mlx5e_params *params,
                  struct mlx5e_rq_param *param, struct mlx5e_xsk_param *xsk,
                  struct xdp_umem *umem, struct mlx5e_rq *rq);
int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq, int wait_time);
void mlx5e_deactivate_rq(struct mlx5e_rq *rq);
void mlx5e_close_rq(struct mlx5e_rq *rq);

struct mlx5e_sq_param;
int mlx5e_open_icosq(struct mlx5e_channel *c, struct mlx5e_params *params,
                     struct mlx5e_sq_param *param, struct mlx5e_icosq *sq);
void mlx5e_close_icosq(struct mlx5e_icosq *sq);
int mlx5e_open_xdpsq(struct mlx5e_channel *c, struct mlx5e_params *params,
                     struct mlx5e_sq_param *param, struct xdp_umem *umem,
                     struct mlx5e_xdpsq *sq, bool is_redirect);
void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq);

struct mlx5e_cq_param;
int mlx5e_open_cq(struct mlx5e_channel *c, struct dim_cq_moder moder,
                  struct mlx5e_cq_param *param, struct mlx5e_cq *cq);
void mlx5e_close_cq(struct mlx5e_cq *cq);

int mlx5e_open_locked(struct net_device *netdev);
int mlx5e_close_locked(struct net_device *netdev);

int mlx5e_open_channels(struct mlx5e_priv *priv,
                        struct mlx5e_channels *chs);
void mlx5e_close_channels(struct mlx5e_channels *chs);

/* Function pointer to be used to modify HW or kernel settings while
 * switching channels
 */
typedef int (*mlx5e_fp_preactivate)(struct mlx5e_priv *priv, void *context);
#define MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(fn) \
int fn##_ctx(struct mlx5e_priv *priv, void *context) \
{ \
        return fn(priv); \
}
int mlx5e_safe_reopen_channels(struct mlx5e_priv *priv);
int mlx5e_safe_switch_channels(struct mlx5e_priv *priv,
                               struct mlx5e_channels *new_chs,
                               mlx5e_fp_preactivate preactivate,
                               void *context);
int mlx5e_num_channels_changed(struct mlx5e_priv *priv);
int mlx5e_num_channels_changed_ctx(struct mlx5e_priv *priv, void *context);
void mlx5e_activate_priv_channels(struct mlx5e_priv *priv);
void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv);

void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len,
                                   int num_channels);

void mlx5e_reset_tx_moderation(struct mlx5e_params *params, u8 cq_period_mode);
void mlx5e_reset_rx_moderation(struct mlx5e_params *params, u8 cq_period_mode);
void mlx5e_set_tx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode);
void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode);

void mlx5e_set_rq_type(struct mlx5_core_dev *mdev, struct mlx5e_params *params);
void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev,
                               struct mlx5e_params *params);
int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state, int next_state);
void mlx5e_activate_rq(struct mlx5e_rq *rq);
void mlx5e_deactivate_rq(struct mlx5e_rq *rq);
void mlx5e_activate_icosq(struct mlx5e_icosq *icosq);
void mlx5e_deactivate_icosq(struct mlx5e_icosq *icosq);

int mlx5e_modify_sq(struct mlx5_core_dev *mdev, u32 sqn,
                    struct mlx5e_modify_sq_param *p);
void mlx5e_activate_txqsq(struct mlx5e_txqsq *sq);
void mlx5e_tx_disable_queue(struct netdev_queue *txq);

static inline bool mlx5_tx_swp_supported(struct mlx5_core_dev *mdev)
{
        return MLX5_CAP_ETH(mdev, swp) &&
                MLX5_CAP_ETH(mdev, swp_csum) && MLX5_CAP_ETH(mdev, swp_lso);
}

extern const struct ethtool_ops mlx5e_ethtool_ops;

int mlx5e_create_tir(struct mlx5_core_dev *mdev, struct mlx5e_tir *tir,
                     u32 *in);
void mlx5e_destroy_tir(struct mlx5_core_dev *mdev,
                       struct mlx5e_tir *tir);
int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev);
void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev);
int mlx5e_refresh_tirs(struct mlx5e_priv *priv, bool enable_uc_lb,
                       bool enable_mc_lb);
void mlx5e_mkey_set_relaxed_ordering(struct mlx5_core_dev *mdev, void *mkc);

/* common netdev helpers */
void mlx5e_create_q_counters(struct mlx5e_priv *priv);
void mlx5e_destroy_q_counters(struct mlx5e_priv *priv);
int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
                       struct mlx5e_rq *drop_rq);
void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq);

int mlx5e_create_indirect_rqt(struct mlx5e_priv *priv);

int mlx5e_create_indirect_tirs(struct mlx5e_priv *priv, bool inner_ttc);
void mlx5e_destroy_indirect_tirs(struct mlx5e_priv *priv);

int mlx5e_create_direct_rqts(struct mlx5e_priv *priv, struct mlx5e_tir *tirs);
void mlx5e_destroy_direct_rqts(struct mlx5e_priv *priv, struct mlx5e_tir *tirs);

int mlx5e_create_direct_tirs(struct mlx5e_priv *priv, struct mlx5e_tir *tirs);
void mlx5e_destroy_direct_tirs(struct mlx5e_priv *priv, struct mlx5e_tir *tirs);
void mlx5e_destroy_rqt(struct mlx5e_priv *priv, struct mlx5e_rqt *rqt);

int mlx5e_create_tis(struct mlx5_core_dev *mdev, void *in, u32 *tisn);
void mlx5e_destroy_tis(struct mlx5_core_dev *mdev, u32 tisn);

int mlx5e_create_tises(struct mlx5e_priv *priv);
void mlx5e_destroy_tises(struct mlx5e_priv *priv);
int mlx5e_update_nic_rx(struct mlx5e_priv *priv);
void mlx5e_update_carrier(struct mlx5e_priv *priv);
int mlx5e_close(struct net_device *netdev);
int mlx5e_open(struct net_device *netdev);

void mlx5e_queue_update_stats(struct mlx5e_priv *priv);
int mlx5e_bits_invert(unsigned long a, int size);

int mlx5e_set_dev_port_mtu(struct mlx5e_priv *priv);
int mlx5e_set_dev_port_mtu_ctx(struct mlx5e_priv *priv, void *context);
int mlx5e_change_mtu(struct net_device *netdev, int new_mtu,
                     mlx5e_fp_preactivate preactivate);
void mlx5e_vxlan_set_netdev_info(struct mlx5e_priv *priv);

/* ethtool helpers */
void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv *priv,
                               struct ethtool_drvinfo *drvinfo);
void mlx5e_ethtool_get_strings(struct mlx5e_priv *priv,
                               uint32_t stringset, uint8_t *data);
int mlx5e_ethtool_get_sset_count(struct mlx5e_priv *priv, int sset);
void mlx5e_ethtool_get_ethtool_stats(struct mlx5e_priv *priv,
                                     struct ethtool_stats *stats, u64 *data);
void mlx5e_ethtool_get_ringparam(struct mlx5e_priv *priv,
                                 struct ethtool_ringparam *param);
int mlx5e_ethtool_set_ringparam(struct mlx5e_priv *priv,
                                struct ethtool_ringparam *param);
void mlx5e_ethtool_get_channels(struct mlx5e_priv *priv,
                                struct ethtool_channels *ch);
int mlx5e_ethtool_set_channels(struct mlx5e_priv *priv,
                               struct ethtool_channels *ch);
int mlx5e_ethtool_get_coalesce(struct mlx5e_priv *priv,
                               struct ethtool_coalesce *coal);
int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
                               struct ethtool_coalesce *coal);
int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
                                     struct ethtool_link_ksettings *link_ksettings);
int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
                                     const struct ethtool_link_ksettings *link_ksettings);
int mlx5e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, u8 *hfunc);
int mlx5e_set_rxfh(struct net_device *dev, const u32 *indir, const u8 *key,
                   const u8 hfunc);
int mlx5e_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
                    u32 *rule_locs);
int mlx5e_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd);
u32 mlx5e_ethtool_get_rxfh_key_size(struct mlx5e_priv *priv);
u32 mlx5e_ethtool_get_rxfh_indir_size(struct mlx5e_priv *priv);
int mlx5e_ethtool_get_ts_info(struct mlx5e_priv *priv,
                              struct ethtool_ts_info *info);
int mlx5e_ethtool_flash_device(struct mlx5e_priv *priv,
                               struct ethtool_flash *flash);
void mlx5e_ethtool_get_pauseparam(struct mlx5e_priv *priv,
                                  struct ethtool_pauseparam *pauseparam);
int mlx5e_ethtool_set_pauseparam(struct mlx5e_priv *priv,
                                 struct ethtool_pauseparam *pauseparam);

/* mlx5e generic netdev management API */
int mlx5e_netdev_init(struct net_device *netdev,
                      struct mlx5e_priv *priv,
                      struct mlx5_core_dev *mdev,
                      const struct mlx5e_profile *profile,
                      void *ppriv);
void mlx5e_netdev_cleanup(struct net_device *netdev, struct mlx5e_priv *priv);
struct net_device*
mlx5e_create_netdev(struct mlx5_core_dev *mdev, const struct mlx5e_profile *profile,
                    int nch, void *ppriv);
int mlx5e_attach_netdev(struct mlx5e_priv *priv);
void mlx5e_detach_netdev(struct mlx5e_priv *priv);
void mlx5e_destroy_netdev(struct mlx5e_priv *priv);
void mlx5e_set_netdev_mtu_boundaries(struct mlx5e_priv *priv);
void mlx5e_build_nic_params(struct mlx5e_priv *priv,
                            struct mlx5e_xsk *xsk,
                            struct mlx5e_rss_params *rss_params,
                            struct mlx5e_params *params,
                            u16 mtu);
void mlx5e_build_rq_params(struct mlx5_core_dev *mdev,
                           struct mlx5e_params *params);
void mlx5e_build_rss_params(struct mlx5e_rss_params *rss_params,
                            u16 num_channels);
void mlx5e_rx_dim_work(struct work_struct *work);
void mlx5e_tx_dim_work(struct work_struct *work);

netdev_features_t mlx5e_features_check(struct sk_buff *skb,
                                       struct net_device *netdev,
                                       netdev_features_t features);
int mlx5e_set_features(struct net_device *netdev, netdev_features_t features);
#ifdef CONFIG_MLX5_ESWITCH
int mlx5e_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
int mlx5e_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, int max_tx_rate);
int mlx5e_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivi);
int mlx5e_get_vf_stats(struct net_device *dev, int vf, struct ifla_vf_stats *vf_stats);
#endif
#endif /* __MLX5_EN_H__ */