LXR linux/include/scsi/fcoe

   1/*
   2 * Copyright (c) 2011-2012 Intel Corporation.  All rights reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms and conditions of the GNU General Public License,
   6 * version 2, as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope it will be useful, but WITHOUT
   9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11 * more details.
  12 *
  13 * You should have received a copy of the GNU General Public License along with
  14 * this program; if not, write to the Free Software Foundation, Inc.,
  15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  16 *
  17 * Maintained at www.Open-FCoE.org
  18 */
  19
  20#ifndef FCOE_SYSFS
  21#define FCOE_SYSFS
  22
  23#include <linux/if_ether.h>
  24#include <linux/device.h>
  25#include <scsi/fc/fc_fcoe.h>
  26
  27struct fcoe_ctlr_device;
  28struct fcoe_fcf_device;
  29
  30struct fcoe_sysfs_function_template {
  31        void (*get_fcoe_ctlr_link_fail)(struct fcoe_ctlr_device *);
  32        void (*get_fcoe_ctlr_vlink_fail)(struct fcoe_ctlr_device *);
  33        void (*get_fcoe_ctlr_miss_fka)(struct fcoe_ctlr_device *);
  34        void (*get_fcoe_ctlr_symb_err)(struct fcoe_ctlr_device *);
  35        void (*get_fcoe_ctlr_err_block)(struct fcoe_ctlr_device *);
  36        void (*get_fcoe_ctlr_fcs_error)(struct fcoe_ctlr_device *);
  37        void (*set_fcoe_ctlr_mode)(struct fcoe_ctlr_device *);
  38        int  (*set_fcoe_ctlr_enabled)(struct fcoe_ctlr_device *);
  39        void (*get_fcoe_fcf_selected)(struct fcoe_fcf_device *);
  40        void (*get_fcoe_fcf_vlan_id)(struct fcoe_fcf_device *);
  41};
  42
  43#define dev_to_ctlr(d)                                  \
  44        container_of((d), struct fcoe_ctlr_device, dev)
  45
  46enum fip_conn_type {
  47        FIP_CONN_TYPE_UNKNOWN,
  48        FIP_CONN_TYPE_FABRIC,
  49        FIP_CONN_TYPE_VN2VN,
  50};
  51
  52enum ctlr_enabled_state {
  53        FCOE_CTLR_ENABLED,
  54        FCOE_CTLR_DISABLED,
  55        FCOE_CTLR_UNUSED,
  56};
  57
  58struct fcoe_ctlr_device {
  59        u32                             id;
  60
  61        struct device                   dev;
  62        struct fcoe_sysfs_function_template *f;
  63
  64        struct list_head                fcfs;
  65        char                            work_q_name[20];
  66        struct workqueue_struct         *work_q;
  67        char                            devloss_work_q_name[20];
  68        struct workqueue_struct         *devloss_work_q;
  69        struct mutex                    lock;
  70
  71        int                             fcf_dev_loss_tmo;
  72        enum fip_conn_type              mode;
  73
  74        enum ctlr_enabled_state         enabled;
  75
  76        /* expected in host order for displaying */
  77        struct fcoe_fc_els_lesb         lesb;
  78};
  79
  80static inline void *fcoe_ctlr_device_priv(const struct fcoe_ctlr_device *ctlr)
  81{
  82        return (void *)(ctlr + 1);
  83}
  84
  85/* fcf states */
  86enum fcf_state {
  87        FCOE_FCF_STATE_UNKNOWN,
  88        FCOE_FCF_STATE_DISCONNECTED,
  89        FCOE_FCF_STATE_CONNECTED,
  90        FCOE_FCF_STATE_DELETED,
  91};
  92
  93struct fcoe_fcf_device {
  94        u32                 id;
  95        struct device       dev;
  96        struct list_head    peers;
  97        struct work_struct  delete_work;
  98        struct delayed_work dev_loss_work;
  99        u32                 dev_loss_tmo;
 100        void                *priv;
 101        enum fcf_state      state;
 102
 103        u64                 fabric_name;
 104        u64                 switch_name;
 105        u32                 fc_map;
 106        u16                 vfid;
 107        u8                  mac[ETH_ALEN];
 108        u8                  priority;
 109        u32                 fka_period;
 110        u8                  selected;
 111        u16                 vlan_id;
 112};
 113
 114#define dev_to_fcf(d)                                   \
 115        container_of((d), struct fcoe_fcf_device, dev)
 116/* parentage should never be missing */
 117#define fcoe_fcf_dev_to_ctlr_dev(x)             \
 118        dev_to_ctlr((x)->dev.parent)
 119#define fcoe_fcf_device_priv(x)                 \
 120        ((x)->priv)
 121
 122struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
 123                            struct fcoe_sysfs_function_template *f,
 124                            int priv_size);
 125void fcoe_ctlr_device_delete(struct fcoe_ctlr_device *);
 126struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *,
 127                                            struct fcoe_fcf_device *);
 128void fcoe_fcf_device_delete(struct fcoe_fcf_device *);
 129
 130int __init fcoe_sysfs_setup(void);
 131void __exit fcoe_sysfs_teardown(void);
 132
 133#endif /* FCOE_SYSFS */
 134