net/ncsi/internal.h - kernel/msm-4.9 - Gitiles

 /*
  * Copyright Gavin Shan, IBM Corporation 2016.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */

 #ifndef __NCSI_INTERNAL_H__
 #define __NCSI_INTERNAL_H__

 enum {
 	NCSI_CAP_BASE		= 0,
 	NCSI_CAP_GENERIC	= 0,
 	NCSI_CAP_BC,
 	NCSI_CAP_MC,
 	NCSI_CAP_BUFFER,
 	NCSI_CAP_AEN,
 	NCSI_CAP_VLAN,
 	NCSI_CAP_MAX
 };

 enum {
 	NCSI_CAP_GENERIC_HWA             = 0x01, /* HW arbitration           */
 	NCSI_CAP_GENERIC_HDS             = 0x02, /* HNC driver status change */
 	NCSI_CAP_GENERIC_FC              = 0x04, /* HNC to MC flow control   */
 	NCSI_CAP_GENERIC_FC1             = 0x08, /* MC to HNC flow control   */
 	NCSI_CAP_GENERIC_MC              = 0x10, /* Global MC filtering      */
 	NCSI_CAP_GENERIC_HWA_UNKNOWN     = 0x00, /* Unknown HW arbitration   */
 	NCSI_CAP_GENERIC_HWA_SUPPORT     = 0x20, /* Supported HW arbitration */
 	NCSI_CAP_GENERIC_HWA_NOT_SUPPORT = 0x40, /* No HW arbitration        */
 	NCSI_CAP_GENERIC_HWA_RESERVED    = 0x60, /* Reserved HW arbitration  */
 	NCSI_CAP_GENERIC_HWA_MASK        = 0x60, /* Mask for HW arbitration  */
 	NCSI_CAP_GENERIC_MASK            = 0x7f,
 	NCSI_CAP_BC_ARP                  = 0x01, /* ARP packet filtering     */
 	NCSI_CAP_BC_DHCPC                = 0x02, /* DHCP client filtering    */
 	NCSI_CAP_BC_DHCPS                = 0x04, /* DHCP server filtering    */
 	NCSI_CAP_BC_NETBIOS              = 0x08, /* NetBIOS packet filtering */
 	NCSI_CAP_BC_MASK                 = 0x0f,
 	NCSI_CAP_MC_IPV6_NEIGHBOR        = 0x01, /* IPv6 neighbor filtering  */
 	NCSI_CAP_MC_IPV6_ROUTER          = 0x02, /* IPv6 router filering     */
 	NCSI_CAP_MC_DHCPV6_RELAY         = 0x04, /* DHCPv6 relay / server MC */
 	NCSI_CAP_MC_DHCPV6_WELL_KNOWN    = 0x08, /* DHCPv6 well-known MC     */
 	NCSI_CAP_MC_IPV6_MLD             = 0x10, /* IPv6 MLD filtering       */
 	NCSI_CAP_MC_IPV6_NEIGHBOR_S      = 0x20, /* IPv6 neighbour filtering */
 	NCSI_CAP_MC_MASK                 = 0x3f,
 	NCSI_CAP_AEN_LSC                 = 0x01, /* Link status change       */
 	NCSI_CAP_AEN_CR                  = 0x02, /* Configuration required   */
 	NCSI_CAP_AEN_HDS                 = 0x04, /* HNC driver status        */
 	NCSI_CAP_AEN_MASK                = 0x07,
 	NCSI_CAP_VLAN_ONLY               = 0x01, /* Filter VLAN packet only  */
 	NCSI_CAP_VLAN_NO                 = 0x02, /* Filter VLAN and non-VLAN */
 	NCSI_CAP_VLAN_ANY                = 0x04, /* Filter Any-and-non-VLAN  */
 	NCSI_CAP_VLAN_MASK               = 0x07
 };

 enum {
 	NCSI_MODE_BASE		= 0,
 	NCSI_MODE_ENABLE	= 0,
 	NCSI_MODE_TX_ENABLE,
 	NCSI_MODE_LINK,
 	NCSI_MODE_VLAN,
 	NCSI_MODE_BC,
 	NCSI_MODE_MC,
 	NCSI_MODE_AEN,
 	NCSI_MODE_FC,
 	NCSI_MODE_MAX
 };

 enum {
 	NCSI_FILTER_BASE	= 0,
 	NCSI_FILTER_VLAN	= 0,
 	NCSI_FILTER_UC,
 	NCSI_FILTER_MC,
 	NCSI_FILTER_MIXED,
 	NCSI_FILTER_MAX
 };

 struct ncsi_channel_version {
 	u32 version;		/* Supported BCD encoded NCSI version */
 	u32 alpha2;		/* Supported BCD encoded NCSI version */
 	u8  fw_name[12];	/* Firware name string                */
 	u32 fw_version;		/* Firmware version                   */
 	u16 pci_ids[4];		/* PCI identification                 */
 	u32 mf_id;		/* Manufacture ID                     */
 };

 struct ncsi_channel_cap {
 	u32 index;	/* Index of channel capabilities */
 	u32 cap;	/* NCSI channel capability       */
 };

 struct ncsi_channel_mode {
 	u32 index;	/* Index of channel modes      */
 	u32 enable;	/* Enabled or disabled         */
 	u32 size;	/* Valid entries in ncm_data[] */
 	u32 data[8];	/* Data entries                */
 };

 struct ncsi_channel_filter {
 	u32 index;	/* Index of channel filters          */
 	u32 total;	/* Total entries in the filter table */
 	u64 bitmap;	/* Bitmap of valid entries           */
 	u32 data[];	/* Data for the valid entries        */
 };

 struct ncsi_channel_stats {
 	u32 hnc_cnt_hi;		/* Counter cleared            */
 	u32 hnc_cnt_lo;		/* Counter cleared            */
 	u32 hnc_rx_bytes;	/* Rx bytes                   */
 	u32 hnc_tx_bytes;	/* Tx bytes                   */
 	u32 hnc_rx_uc_pkts;	/* Rx UC packets              */
 	u32 hnc_rx_mc_pkts;     /* Rx MC packets              */
 	u32 hnc_rx_bc_pkts;	/* Rx BC packets              */
 	u32 hnc_tx_uc_pkts;	/* Tx UC packets              */
 	u32 hnc_tx_mc_pkts;	/* Tx MC packets              */
 	u32 hnc_tx_bc_pkts;	/* Tx BC packets              */
 	u32 hnc_fcs_err;	/* FCS errors                 */
 	u32 hnc_align_err;	/* Alignment errors           */
 	u32 hnc_false_carrier;	/* False carrier detection    */
 	u32 hnc_runt_pkts;	/* Rx runt packets            */
 	u32 hnc_jabber_pkts;	/* Rx jabber packets          */
 	u32 hnc_rx_pause_xon;	/* Rx pause XON frames        */
 	u32 hnc_rx_pause_xoff;	/* Rx XOFF frames             */
 	u32 hnc_tx_pause_xon;	/* Tx XON frames              */
 	u32 hnc_tx_pause_xoff;	/* Tx XOFF frames             */
 	u32 hnc_tx_s_collision;	/* Single collision frames    */
 	u32 hnc_tx_m_collision;	/* Multiple collision frames  */
 	u32 hnc_l_collision;	/* Late collision frames      */
 	u32 hnc_e_collision;	/* Excessive collision frames */
 	u32 hnc_rx_ctl_frames;	/* Rx control frames          */
 	u32 hnc_rx_64_frames;	/* Rx 64-bytes frames         */
 	u32 hnc_rx_127_frames;	/* Rx 65-127 bytes frames     */
 	u32 hnc_rx_255_frames;	/* Rx 128-255 bytes frames    */
 	u32 hnc_rx_511_frames;	/* Rx 256-511 bytes frames    */
 	u32 hnc_rx_1023_frames;	/* Rx 512-1023 bytes frames   */
 	u32 hnc_rx_1522_frames;	/* Rx 1024-1522 bytes frames  */
 	u32 hnc_rx_9022_frames;	/* Rx 1523-9022 bytes frames  */
 	u32 hnc_tx_64_frames;	/* Tx 64-bytes frames         */
 	u32 hnc_tx_127_frames;	/* Tx 65-127 bytes frames     */
 	u32 hnc_tx_255_frames;	/* Tx 128-255 bytes frames    */
 	u32 hnc_tx_511_frames;	/* Tx 256-511 bytes frames    */
 	u32 hnc_tx_1023_frames;	/* Tx 512-1023 bytes frames   */
 	u32 hnc_tx_1522_frames;	/* Tx 1024-1522 bytes frames  */
 	u32 hnc_tx_9022_frames;	/* Tx 1523-9022 bytes frames  */
 	u32 hnc_rx_valid_bytes;	/* Rx valid bytes             */
 	u32 hnc_rx_runt_pkts;	/* Rx error runt packets      */
 	u32 hnc_rx_jabber_pkts;	/* Rx error jabber packets    */
 	u32 ncsi_rx_cmds;	/* Rx NCSI commands           */
 	u32 ncsi_dropped_cmds;	/* Dropped commands           */
 	u32 ncsi_cmd_type_errs;	/* Command type errors        */
 	u32 ncsi_cmd_csum_errs;	/* Command checksum errors    */
 	u32 ncsi_rx_pkts;	/* Rx NCSI packets            */
 	u32 ncsi_tx_pkts;	/* Tx NCSI packets            */
 	u32 ncsi_tx_aen_pkts;	/* Tx AEN packets             */
 	u32 pt_tx_pkts;		/* Tx packets                 */
 	u32 pt_tx_dropped;	/* Tx dropped packets         */
 	u32 pt_tx_channel_err;	/* Tx channel errors          */
 	u32 pt_tx_us_err;	/* Tx undersize errors        */
 	u32 pt_rx_pkts;		/* Rx packets                 */
 	u32 pt_rx_dropped;	/* Rx dropped packets         */
 	u32 pt_rx_channel_err;	/* Rx channel errors          */
 	u32 pt_rx_us_err;	/* Rx undersize errors        */
 	u32 pt_rx_os_err;	/* Rx oversize errors         */
 };

 struct ncsi_dev_priv;
 struct ncsi_package;

 #define NCSI_PACKAGE_SHIFT	5
 #define NCSI_PACKAGE_INDEX(c)	(((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
 #define NCSI_CHANNEL_INDEX(c)	((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
 #define NCSI_TO_CHANNEL(p, c)	(((p) << NCSI_PACKAGE_SHIFT) | (c))

 struct ncsi_channel {
 	unsigned char               id;
 	int                         state;
 #define NCSI_CHANNEL_INACTIVE		1
 #define NCSI_CHANNEL_ACTIVE		2
 #define NCSI_CHANNEL_INVISIBLE		3
 	spinlock_t                  lock;	/* Protect filters etc */
 	struct ncsi_package         *package;
 	struct ncsi_channel_version version;
 	struct ncsi_channel_cap	    caps[NCSI_CAP_MAX];
 	struct ncsi_channel_mode    modes[NCSI_MODE_MAX];
 	struct ncsi_channel_filter  *filters[NCSI_FILTER_MAX];
 	struct ncsi_channel_stats   stats;
 	struct timer_list           timer;	/* Link monitor timer  */
 	bool                        enabled;	/* Timer is enabled    */
 	unsigned int                timeout;	/* Times of timeout    */
 	struct list_head            node;
 	struct list_head            link;
 };

 struct ncsi_package {
 	unsigned char        id;          /* NCSI 3-bits package ID */
 	unsigned char        uuid[16];    /* UUID                   */
 	struct ncsi_dev_priv *ndp;        /* NCSI device            */
 	spinlock_t           lock;        /* Protect the package    */
 	unsigned int         channel_num; /* Number of channels     */
 	struct list_head     channels;    /* List of chanels        */
 	struct list_head     node;        /* Form list of packages  */
 };

 struct ncsi_request {
 	unsigned char        id;      /* Request ID - 0 to 255           */
 	bool                 used;    /* Request that has been assigned  */
 	bool                 driven;  /* Drive state machine             */
 	struct ncsi_dev_priv *ndp;    /* Associated NCSI device          */
 	struct sk_buff       *cmd;    /* Associated NCSI command packet  */
 	struct sk_buff       *rsp;    /* Associated NCSI response packet */
 	struct timer_list    timer;   /* Timer on waiting for response   */
 	bool                 enabled; /* Time has been enabled or not    */
 };

 enum {
 	ncsi_dev_state_major		= 0xff00,
 	ncsi_dev_state_minor		= 0x00ff,
 	ncsi_dev_state_probe_deselect	= 0x0201,
 	ncsi_dev_state_probe_package,
 	ncsi_dev_state_probe_channel,
 	ncsi_dev_state_probe_cis,
 	ncsi_dev_state_probe_gvi,
 	ncsi_dev_state_probe_gc,
 	ncsi_dev_state_probe_gls,
 	ncsi_dev_state_probe_dp,
 	ncsi_dev_state_config_sp	= 0x0301,
 	ncsi_dev_state_config_cis,
 	ncsi_dev_state_config_sma,
 	ncsi_dev_state_config_ebf,
 #if IS_ENABLED(CONFIG_IPV6)
 	ncsi_dev_state_config_egmf,
 #endif
 	ncsi_dev_state_config_ecnt,
 	ncsi_dev_state_config_ec,
 	ncsi_dev_state_config_ae,
 	ncsi_dev_state_config_gls,
 	ncsi_dev_state_config_done,
 	ncsi_dev_state_suspend_select	= 0x0401,
 	ncsi_dev_state_suspend_dcnt,
 	ncsi_dev_state_suspend_dc,
 	ncsi_dev_state_suspend_deselect,
 	ncsi_dev_state_suspend_done
 };

 struct ncsi_dev_priv {
 	struct ncsi_dev     ndev;            /* Associated NCSI device     */
 	unsigned int        flags;           /* NCSI device flags          */
 #define NCSI_DEV_PROBED		1            /* Finalized NCSI topology    */
 #define NCSI_DEV_HWA		2            /* Enabled HW arbitration     */
 #define NCSI_DEV_RESHUFFLE	4
 	spinlock_t          lock;            /* Protect the NCSI device    */
 #if IS_ENABLED(CONFIG_IPV6)
 	unsigned int        inet6_addr_num;  /* Number of IPv6 addresses   */
 #endif
 	unsigned int        package_num;     /* Number of packages         */
 	struct list_head    packages;        /* List of packages           */
 	struct ncsi_request requests[256];   /* Request table              */
 	unsigned int        request_id;      /* Last used request ID       */
 	unsigned int        pending_req_num; /* Number of pending requests */
 	struct ncsi_package *active_package; /* Currently handled package  */
 	struct ncsi_channel *active_channel; /* Currently handled channel  */
 	struct list_head    channel_queue;   /* Config queue of channels   */
 	struct work_struct  work;            /* For channel management     */
 	struct packet_type  ptype;           /* NCSI packet Rx handler     */
 	struct list_head    node;            /* Form NCSI device list      */
 };

 struct ncsi_cmd_arg {
 	struct ncsi_dev_priv *ndp;        /* Associated NCSI device        */
 	unsigned char        type;        /* Command in the NCSI packet    */
 	unsigned char        id;          /* Request ID (sequence number)  */
 	unsigned char        package;     /* Destination package ID        */
 	unsigned char        channel;     /* Detination channel ID or 0x1f */
 	unsigned short       payload;     /* Command packet payload length */
 	bool                 driven;      /* Drive the state machine?      */
 	union {
 		unsigned char  bytes[16]; /* Command packet specific data  */
 		unsigned short words[8];
 		unsigned int   dwords[4];
 	};
 };

 extern struct list_head ncsi_dev_list;
 extern spinlock_t ncsi_dev_lock;

 #define TO_NCSI_DEV_PRIV(nd) \
 	container_of(nd, struct ncsi_dev_priv, ndev)
 #define NCSI_FOR_EACH_DEV(ndp) \
 	list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
 #define NCSI_FOR_EACH_PACKAGE(ndp, np) \
 	list_for_each_entry_rcu(np, &ndp->packages, node)
 #define NCSI_FOR_EACH_CHANNEL(np, nc) \
 	list_for_each_entry_rcu(nc, &np->channels, node)

 /* Resources */
 int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data);
 int ncsi_add_filter(struct ncsi_channel *nc, int table, void *data);
 int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index);
 void ncsi_start_channel_monitor(struct ncsi_channel *nc);
 void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
 struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
 				       unsigned char id);
 struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np,
 				      unsigned char id);
 struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
 				       unsigned char id);
 struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
 				      unsigned char id);
 void ncsi_remove_package(struct ncsi_package *np);
 void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
 				   unsigned char id,
 				   struct ncsi_package **np,
 				   struct ncsi_channel **nc);
 struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, bool driven);
 void ncsi_free_request(struct ncsi_request *nr);
 struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
 int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);

 /* Packet handlers */
 u32 ncsi_calculate_checksum(unsigned char *data, int len);
 int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
 		 struct packet_type *pt, struct net_device *orig_dev);
 int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb);

 #endif /* __NCSI_INTERNAL_H__ */
	/*
	* Copyright Gavin Shan, IBM Corporation 2016.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*/

	#ifndef __NCSI_INTERNAL_H__
	#define __NCSI_INTERNAL_H__

	enum {
	NCSI_CAP_BASE = 0,
	NCSI_CAP_GENERIC = 0,
	NCSI_CAP_BC,
	NCSI_CAP_MC,
	NCSI_CAP_BUFFER,
	NCSI_CAP_AEN,
	NCSI_CAP_VLAN,
	NCSI_CAP_MAX
	};

	enum {
	NCSI_CAP_GENERIC_HWA = 0x01, /* HW arbitration */
	NCSI_CAP_GENERIC_HDS = 0x02, /* HNC driver status change */
	NCSI_CAP_GENERIC_FC = 0x04, /* HNC to MC flow control */
	NCSI_CAP_GENERIC_FC1 = 0x08, /* MC to HNC flow control */
	NCSI_CAP_GENERIC_MC = 0x10, /* Global MC filtering */
	NCSI_CAP_GENERIC_HWA_UNKNOWN = 0x00, /* Unknown HW arbitration */
	NCSI_CAP_GENERIC_HWA_SUPPORT = 0x20, /* Supported HW arbitration */
	NCSI_CAP_GENERIC_HWA_NOT_SUPPORT = 0x40, /* No HW arbitration */
	NCSI_CAP_GENERIC_HWA_RESERVED = 0x60, /* Reserved HW arbitration */
	NCSI_CAP_GENERIC_HWA_MASK = 0x60, /* Mask for HW arbitration */
	NCSI_CAP_GENERIC_MASK = 0x7f,
	NCSI_CAP_BC_ARP = 0x01, /* ARP packet filtering */
	NCSI_CAP_BC_DHCPC = 0x02, /* DHCP client filtering */
	NCSI_CAP_BC_DHCPS = 0x04, /* DHCP server filtering */
	NCSI_CAP_BC_NETBIOS = 0x08, /* NetBIOS packet filtering */
	NCSI_CAP_BC_MASK = 0x0f,
	NCSI_CAP_MC_IPV6_NEIGHBOR = 0x01, /* IPv6 neighbor filtering */
	NCSI_CAP_MC_IPV6_ROUTER = 0x02, /* IPv6 router filering */
	NCSI_CAP_MC_DHCPV6_RELAY = 0x04, /* DHCPv6 relay / server MC */
	NCSI_CAP_MC_DHCPV6_WELL_KNOWN = 0x08, /* DHCPv6 well-known MC */
	NCSI_CAP_MC_IPV6_MLD = 0x10, /* IPv6 MLD filtering */
	NCSI_CAP_MC_IPV6_NEIGHBOR_S = 0x20, /* IPv6 neighbour filtering */
	NCSI_CAP_MC_MASK = 0x3f,
	NCSI_CAP_AEN_LSC = 0x01, /* Link status change */
	NCSI_CAP_AEN_CR = 0x02, /* Configuration required */
	NCSI_CAP_AEN_HDS = 0x04, /* HNC driver status */
	NCSI_CAP_AEN_MASK = 0x07,
	NCSI_CAP_VLAN_ONLY = 0x01, /* Filter VLAN packet only */
	NCSI_CAP_VLAN_NO = 0x02, /* Filter VLAN and non-VLAN */
	NCSI_CAP_VLAN_ANY = 0x04, /* Filter Any-and-non-VLAN */
	NCSI_CAP_VLAN_MASK = 0x07
	};

	enum {
	NCSI_MODE_BASE = 0,
	NCSI_MODE_ENABLE = 0,
	NCSI_MODE_TX_ENABLE,
	NCSI_MODE_LINK,
	NCSI_MODE_VLAN,
	NCSI_MODE_BC,
	NCSI_MODE_MC,
	NCSI_MODE_AEN,
	NCSI_MODE_FC,
	NCSI_MODE_MAX
	};

	enum {
	NCSI_FILTER_BASE = 0,
	NCSI_FILTER_VLAN = 0,
	NCSI_FILTER_UC,
	NCSI_FILTER_MC,
	NCSI_FILTER_MIXED,
	NCSI_FILTER_MAX
	};

	struct ncsi_channel_version {
	u32 version; /* Supported BCD encoded NCSI version */
	u32 alpha2; /* Supported BCD encoded NCSI version */
	u8 fw_name[12]; /* Firware name string */
	u32 fw_version; /* Firmware version */
	u16 pci_ids[4]; /* PCI identification */
	u32 mf_id; /* Manufacture ID */
	};

	struct ncsi_channel_cap {
	u32 index; /* Index of channel capabilities */
	u32 cap; /* NCSI channel capability */
	};

	struct ncsi_channel_mode {
	u32 index; /* Index of channel modes */
	u32 enable; /* Enabled or disabled */
	u32 size; /* Valid entries in ncm_data[] */
	u32 data[8]; /* Data entries */
	};

	struct ncsi_channel_filter {
	u32 index; /* Index of channel filters */
	u32 total; /* Total entries in the filter table */
	u64 bitmap; /* Bitmap of valid entries */
	u32 data[]; /* Data for the valid entries */
	};

	struct ncsi_channel_stats {
	u32 hnc_cnt_hi; /* Counter cleared */
	u32 hnc_cnt_lo; /* Counter cleared */
	u32 hnc_rx_bytes; /* Rx bytes */
	u32 hnc_tx_bytes; /* Tx bytes */
	u32 hnc_rx_uc_pkts; /* Rx UC packets */
	u32 hnc_rx_mc_pkts; /* Rx MC packets */
	u32 hnc_rx_bc_pkts; /* Rx BC packets */
	u32 hnc_tx_uc_pkts; /* Tx UC packets */
	u32 hnc_tx_mc_pkts; /* Tx MC packets */
	u32 hnc_tx_bc_pkts; /* Tx BC packets */
	u32 hnc_fcs_err; /* FCS errors */
	u32 hnc_align_err; /* Alignment errors */
	u32 hnc_false_carrier; /* False carrier detection */
	u32 hnc_runt_pkts; /* Rx runt packets */
	u32 hnc_jabber_pkts; /* Rx jabber packets */
	u32 hnc_rx_pause_xon; /* Rx pause XON frames */
	u32 hnc_rx_pause_xoff; /* Rx XOFF frames */
	u32 hnc_tx_pause_xon; /* Tx XON frames */
	u32 hnc_tx_pause_xoff; /* Tx XOFF frames */
	u32 hnc_tx_s_collision; /* Single collision frames */
	u32 hnc_tx_m_collision; /* Multiple collision frames */
	u32 hnc_l_collision; /* Late collision frames */
	u32 hnc_e_collision; /* Excessive collision frames */
	u32 hnc_rx_ctl_frames; /* Rx control frames */
	u32 hnc_rx_64_frames; /* Rx 64-bytes frames */
	u32 hnc_rx_127_frames; /* Rx 65-127 bytes frames */
	u32 hnc_rx_255_frames; /* Rx 128-255 bytes frames */
	u32 hnc_rx_511_frames; /* Rx 256-511 bytes frames */
	u32 hnc_rx_1023_frames; /* Rx 512-1023 bytes frames */
	u32 hnc_rx_1522_frames; /* Rx 1024-1522 bytes frames */
	u32 hnc_rx_9022_frames; /* Rx 1523-9022 bytes frames */
	u32 hnc_tx_64_frames; /* Tx 64-bytes frames */
	u32 hnc_tx_127_frames; /* Tx 65-127 bytes frames */
	u32 hnc_tx_255_frames; /* Tx 128-255 bytes frames */
	u32 hnc_tx_511_frames; /* Tx 256-511 bytes frames */
	u32 hnc_tx_1023_frames; /* Tx 512-1023 bytes frames */
	u32 hnc_tx_1522_frames; /* Tx 1024-1522 bytes frames */
	u32 hnc_tx_9022_frames; /* Tx 1523-9022 bytes frames */
	u32 hnc_rx_valid_bytes; /* Rx valid bytes */
	u32 hnc_rx_runt_pkts; /* Rx error runt packets */
	u32 hnc_rx_jabber_pkts; /* Rx error jabber packets */
	u32 ncsi_rx_cmds; /* Rx NCSI commands */
	u32 ncsi_dropped_cmds; /* Dropped commands */
	u32 ncsi_cmd_type_errs; /* Command type errors */
	u32 ncsi_cmd_csum_errs; /* Command checksum errors */
	u32 ncsi_rx_pkts; /* Rx NCSI packets */
	u32 ncsi_tx_pkts; /* Tx NCSI packets */
	u32 ncsi_tx_aen_pkts; /* Tx AEN packets */
	u32 pt_tx_pkts; /* Tx packets */
	u32 pt_tx_dropped; /* Tx dropped packets */
	u32 pt_tx_channel_err; /* Tx channel errors */
	u32 pt_tx_us_err; /* Tx undersize errors */
	u32 pt_rx_pkts; /* Rx packets */
	u32 pt_rx_dropped; /* Rx dropped packets */
	u32 pt_rx_channel_err; /* Rx channel errors */
	u32 pt_rx_us_err; /* Rx undersize errors */
	u32 pt_rx_os_err; /* Rx oversize errors */
	};

	struct ncsi_dev_priv;
	struct ncsi_package;

	#define NCSI_PACKAGE_SHIFT 5
	#define NCSI_PACKAGE_INDEX(c) (((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
	#define NCSI_CHANNEL_INDEX(c) ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
	#define NCSI_TO_CHANNEL(p, c) (((p) << NCSI_PACKAGE_SHIFT) \| (c))

	struct ncsi_channel {
	unsigned char id;
	int state;
	#define NCSI_CHANNEL_INACTIVE 1
	#define NCSI_CHANNEL_ACTIVE 2
	#define NCSI_CHANNEL_INVISIBLE 3
	spinlock_t lock; /* Protect filters etc */
	struct ncsi_package *package;
	struct ncsi_channel_version version;
	struct ncsi_channel_cap caps[NCSI_CAP_MAX];
	struct ncsi_channel_mode modes[NCSI_MODE_MAX];
	struct ncsi_channel_filter *filters[NCSI_FILTER_MAX];
	struct ncsi_channel_stats stats;
	struct timer_list timer; /* Link monitor timer */
	bool enabled; /* Timer is enabled */
	unsigned int timeout; /* Times of timeout */
	struct list_head node;
	struct list_head link;
	};

	struct ncsi_package {
	unsigned char id; /* NCSI 3-bits package ID */
	unsigned char uuid[16]; /* UUID */
	struct ncsi_dev_priv ndp; / NCSI device */
	spinlock_t lock; /* Protect the package */
	unsigned int channel_num; /* Number of channels */
	struct list_head channels; /* List of chanels */
	struct list_head node; /* Form list of packages */
	};

	struct ncsi_request {
	unsigned char id; /* Request ID - 0 to 255 */
	bool used; /* Request that has been assigned */
	bool driven; /* Drive state machine */
	struct ncsi_dev_priv ndp; / Associated NCSI device */
	struct sk_buff cmd; / Associated NCSI command packet */
	struct sk_buff rsp; / Associated NCSI response packet */
	struct timer_list timer; /* Timer on waiting for response */
	bool enabled; /* Time has been enabled or not */
	};

	enum {
	ncsi_dev_state_major = 0xff00,
	ncsi_dev_state_minor = 0x00ff,
	ncsi_dev_state_probe_deselect = 0x0201,
	ncsi_dev_state_probe_package,
	ncsi_dev_state_probe_channel,
	ncsi_dev_state_probe_cis,
	ncsi_dev_state_probe_gvi,
	ncsi_dev_state_probe_gc,
	ncsi_dev_state_probe_gls,
	ncsi_dev_state_probe_dp,
	ncsi_dev_state_config_sp = 0x0301,
	ncsi_dev_state_config_cis,
	ncsi_dev_state_config_sma,
	ncsi_dev_state_config_ebf,
	#if IS_ENABLED(CONFIG_IPV6)
	ncsi_dev_state_config_egmf,
	#endif
	ncsi_dev_state_config_ecnt,
	ncsi_dev_state_config_ec,
	ncsi_dev_state_config_ae,
	ncsi_dev_state_config_gls,
	ncsi_dev_state_config_done,
	ncsi_dev_state_suspend_select = 0x0401,
	ncsi_dev_state_suspend_dcnt,
	ncsi_dev_state_suspend_dc,
	ncsi_dev_state_suspend_deselect,
	ncsi_dev_state_suspend_done
	};

	struct ncsi_dev_priv {
	struct ncsi_dev ndev; /* Associated NCSI device */
	unsigned int flags; /* NCSI device flags */
	#define NCSI_DEV_PROBED 1 /* Finalized NCSI topology */
	#define NCSI_DEV_HWA 2 /* Enabled HW arbitration */
	#define NCSI_DEV_RESHUFFLE 4
	spinlock_t lock; /* Protect the NCSI device */
	#if IS_ENABLED(CONFIG_IPV6)
	unsigned int inet6_addr_num; /* Number of IPv6 addresses */
	#endif
	unsigned int package_num; /* Number of packages */
	struct list_head packages; /* List of packages */
	struct ncsi_request requests[256]; /* Request table */
	unsigned int request_id; /* Last used request ID */
	unsigned int pending_req_num; /* Number of pending requests */
	struct ncsi_package active_package; / Currently handled package */
	struct ncsi_channel active_channel; / Currently handled channel */
	struct list_head channel_queue; /* Config queue of channels */
	struct work_struct work; /* For channel management */
	struct packet_type ptype; /* NCSI packet Rx handler */
	struct list_head node; /* Form NCSI device list */
	};

	struct ncsi_cmd_arg {
	struct ncsi_dev_priv ndp; / Associated NCSI device */
	unsigned char type; /* Command in the NCSI packet */
	unsigned char id; /* Request ID (sequence number) */
	unsigned char package; /* Destination package ID */
	unsigned char channel; /* Detination channel ID or 0x1f */
	unsigned short payload; /* Command packet payload length */
	bool driven; /* Drive the state machine? */
	union {
	unsigned char bytes[16]; /* Command packet specific data */
	unsigned short words[8];
	unsigned int dwords[4];
	};
	};

	extern struct list_head ncsi_dev_list;
	extern spinlock_t ncsi_dev_lock;

	#define TO_NCSI_DEV_PRIV(nd) \
	container_of(nd, struct ncsi_dev_priv, ndev)
	#define NCSI_FOR_EACH_DEV(ndp) \
	list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
	#define NCSI_FOR_EACH_PACKAGE(ndp, np) \
	list_for_each_entry_rcu(np, &ndp->packages, node)
	#define NCSI_FOR_EACH_CHANNEL(np, nc) \
	list_for_each_entry_rcu(nc, &np->channels, node)

	/* Resources */
	int ncsi_find_filter(struct ncsi_channel nc, int table, void data);
	int ncsi_add_filter(struct ncsi_channel nc, int table, void data);
	int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index);
	void ncsi_start_channel_monitor(struct ncsi_channel *nc);
	void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
	struct ncsi_channel ncsi_find_channel(struct ncsi_package np,
	unsigned char id);
	struct ncsi_channel ncsi_add_channel(struct ncsi_package np,
	unsigned char id);
	struct ncsi_package ncsi_find_package(struct ncsi_dev_priv ndp,
	unsigned char id);
	struct ncsi_package ncsi_add_package(struct ncsi_dev_priv ndp,
	unsigned char id);
	void ncsi_remove_package(struct ncsi_package *np);
	void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
	unsigned char id,
	struct ncsi_package **np,
	struct ncsi_channel **nc);
	struct ncsi_request ncsi_alloc_request(struct ncsi_dev_priv ndp, bool driven);
	void ncsi_free_request(struct ncsi_request *nr);
	struct ncsi_dev ncsi_find_dev(struct net_device dev);
	int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);

	/* Packet handlers */
	u32 ncsi_calculate_checksum(unsigned char *data, int len);
	int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
	int ncsi_rcv_rsp(struct sk_buff skb, struct net_device dev,
	struct packet_type pt, struct net_device orig_dev);
	int ncsi_aen_handler(struct ncsi_dev_priv ndp, struct sk_buff skb);

	#endif /* __NCSI_INTERNAL_H__ */