sys/dev/qlnx/qlnxe/ecore_iscsi_api.h

   1 /*
   2  * Copyright (c) 2017-2018 Cavium, Inc.
   3  * All rights reserved.
   4  *
   5  *  Redistribution and use in source and binary forms, with or without
   6  *  modification, are permitted provided that the following conditions
   7  *  are met:
   8  *
   9  *  1. Redistributions of source code must retain the above copyright
  10  *     notice, this list of conditions and the following disclaimer.
  11  *  2. Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  *
  15  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  16  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  19  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  20  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  21  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  24  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25  *  POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  * $FreeBSD$
  28  *
  29  */
  30
  31 #ifndef __ECORE_ISCSI_API_H__
  32 #define __ECORE_ISCSI_API_H__
  33
  34 typedef enum _ecore_status_t (*iscsi_event_cb_t)(void *context,
  35                                                  u8 fw_event_code,
  36                                                  void *fw_handle);
  37
  38 struct ecore_iscsi_conn {
  39         osal_list_entry_t       list_entry;
  40         bool                    free_on_delete;
  41
  42         u16                     conn_id;
  43         u32                     icid;
  44         u32                     fw_cid;
  45
  46         u8                      layer_code;
  47         u8                      offl_flags;
  48         u8                      connect_mode;
  49         u32                     initial_ack;
  50         dma_addr_t              sq_pbl_addr;
  51         struct ecore_chain      r2tq;
  52         struct ecore_chain      xhq;
  53         struct ecore_chain      uhq;
  54
  55         struct tcp_upload_params *tcp_upload_params_virt_addr;
  56         dma_addr_t              tcp_upload_params_phys_addr;
  57         struct scsi_terminate_extra_params *queue_cnts_virt_addr;
  58         dma_addr_t              queue_cnts_phys_addr;
  59         dma_addr_t              syn_phy_addr;
  60
  61         u16                     syn_ip_payload_length;
  62         u8                      local_mac[6];
  63         u8                      remote_mac[6];
  64         u16                     vlan_id;
  65         u8                      tcp_flags;
  66         u8                      ip_version;
  67         u32                     remote_ip[4];
  68         u32                     local_ip[4];
  69         u8                      ka_max_probe_cnt;
  70         u8                      dup_ack_theshold;
  71         u32                     rcv_next;
  72         u32                     snd_una;
  73         u32                     snd_next;
  74         u32                     snd_max;
  75         u32                     snd_wnd;
  76         u32                     rcv_wnd;
  77         u32                     snd_wl1;
  78         u32                     cwnd;
  79         u32                     ss_thresh;
  80         u16                     srtt;
  81         u16                     rtt_var;
  82         u32                     ts_recent;
  83         u32                     ts_recent_age;
  84         u32                     total_rt;
  85         u32                     ka_timeout_delta;
  86         u32                     rt_timeout_delta;
  87         u8                      dup_ack_cnt;
  88         u8                      snd_wnd_probe_cnt;
  89         u8                      ka_probe_cnt;
  90         u8                      rt_cnt;
  91         u32                     flow_label;
  92         u32                     ka_timeout;
  93         u32                     ka_interval;
  94         u32                     max_rt_time;
  95         u32                     initial_rcv_wnd;
  96         u8                      ttl;
  97         u8                      tos_or_tc;
  98         u16                     remote_port;
  99         u16                     local_port;
 100         u16                     mss;
 101         u8                      snd_wnd_scale;
 102         u8                      rcv_wnd_scale;
 103         u16                     da_timeout_value;
 104         u8                      ack_frequency;
 105
 106         u8                      update_flag;
 107 #define ECORE_ISCSI_CONN_HD_EN          0x01
 108 #define ECORE_ISCSI_CONN_DD_EN          0x02
 109 #define ECORE_ISCSI_CONN_INITIAL_R2T    0x04
 110 #define ECORE_ISCSI_CONN_IMMEDIATE_DATA 0x08
 111
 112         u8                      default_cq;
 113         u32                     max_seq_size;
 114         u32                     max_recv_pdu_length;
 115         u32                     max_send_pdu_length;
 116         u32                     first_seq_length;
 117         u32                     exp_stat_sn;
 118         u32                     stat_sn;
 119         u16                     physical_q0;
 120         u16                     physical_q1;
 121         u8                      abortive_dsconnect;
 122 };
 123
 124 struct ecore_iscsi_stats
 125 {
 126         u64 iscsi_rx_bytes_cnt;
 127         u64 iscsi_rx_packet_cnt;
 128         u64 iscsi_rx_new_ooo_isle_events_cnt;
 129         u32 iscsi_cmdq_threshold_cnt;
 130         u32 iscsi_rq_threshold_cnt;
 131         u32 iscsi_immq_threshold_cnt;
 132
 133         u64 iscsi_rx_dropped_pdus_task_not_valid;
 134
 135         u64 iscsi_rx_data_pdu_cnt;
 136         u64 iscsi_rx_r2t_pdu_cnt;
 137         u64 iscsi_rx_total_pdu_cnt;
 138
 139         u64 iscsi_tx_go_to_slow_start_event_cnt;
 140         u64 iscsi_tx_fast_retransmit_event_cnt;
 141
 142         u64 iscsi_tx_data_pdu_cnt;
 143         u64 iscsi_tx_r2t_pdu_cnt;
 144         u64 iscsi_tx_total_pdu_cnt;
 145
 146         u64 iscsi_tx_bytes_cnt;
 147         u64 iscsi_tx_packet_cnt;
 148 };
 149
 150 /**
 151  * @brief ecore_iscsi_acquire_connection - allocate resources,
 152  *        provides connecion handle (CID)as out parameter.
 153  *
 154  * @param p_path
 155  * @param p_conn  partially initialized incoming container of
 156  *                iSCSI connection data
 157  * @return enum _ecore_status_t
 158  */
 159 enum _ecore_status_t
 160 ecore_iscsi_acquire_connection(struct ecore_hwfn *p_hwfn,
 161                                struct ecore_iscsi_conn *p_in_conn,
 162                                struct ecore_iscsi_conn **p_out_conn);
 163
 164 void OSAL_IOMEM *ecore_iscsi_get_db_addr(struct ecore_hwfn *p_hwfn,
 165                                          u32 cid);
 166
 167 void OSAL_IOMEM *ecore_iscsi_get_global_cmdq_cons(struct ecore_hwfn *p_hwfn,
 168                                                   u8 relative_q_id);
 169
 170 void OSAL_IOMEM *ecore_iscsi_get_primary_bdq_prod(struct ecore_hwfn *p_hwfn,
 171                                                   u8 bdq_id);
 172
 173 void OSAL_IOMEM *ecore_iscsi_get_secondary_bdq_prod(struct ecore_hwfn *p_hwfn,
 174                                                     u8 bdq_id);
 175
 176 /**
 177  * @brief ecore_iscsi_offload_connection - offload previously
 178  *        allocated iSCSI connection
 179  *
 180  * @param p_path
 181  * @param p_conn  container of iSCSI connection data
 182  *
 183  * @return enum _ecore_status_t
 184  */
 185 enum _ecore_status_t
 186 ecore_iscsi_offload_connection(struct ecore_hwfn *p_hwfn,
 187                                struct ecore_iscsi_conn *p_conn);
 188
 189 /**
 190  * @brief ecore_iscsi_release_connection - deletes connecton
 191  *        resources (incliding container of iSCSI connection
 192  *        data)
 193  *
 194  * @param p_path
 195  * @param p_conn  container of iSCSI connection data
 196  */
 197 void ecore_iscsi_release_connection(struct ecore_hwfn *p_hwfn,
 198                                     struct ecore_iscsi_conn *p_conn);
 199
 200 /**
 201  * @brief ecore_iscsi_terminate_connection - destroys previously
 202  *        offloaded iSCSI connection
 203  *
 204  * @param p_path
 205  * @param p_conn  container of iSCSI connection data
 206  *
 207  * @return enum _ecore_status_t
 208  */
 209 enum _ecore_status_t
 210 ecore_iscsi_terminate_connection(struct ecore_hwfn *p_hwfn,
 211                                  struct ecore_iscsi_conn *p_conn);
 212
 213
 214 /**
 215  * @brief ecore_iscsi_update_connection - updates previously
 216  *        offloaded iSCSI connection
 217  *
 218  *
 219  * @param p_path
 220  * @param p_conn  container of iSCSI connection data
 221  *
 222  * @return enum _ecore_status_t
 223  */
 224 enum _ecore_status_t
 225 ecore_iscsi_update_connection(struct ecore_hwfn *p_hwfn,
 226                               struct ecore_iscsi_conn *p_conn);
 227
 228 /**
 229  * @brief ecore_iscsi_mac_update_connection - updates remote MAC for previously
 230  *        offloaded iSCSI connection
 231  *
 232  *
 233  * @param p_path
 234  * @param p_conn  container of iSCSI connection data
 235  *
 236  * @return enum _ecore_status_t
 237  */
 238 enum _ecore_status_t
 239 ecore_iscsi_update_remote_mac(struct ecore_hwfn *p_hwfn,
 240                               struct ecore_iscsi_conn *p_conn);
 241
 242 /**
 243  * @brief ecore_iscsi_clear_connection_sq - clear SQ
 244  *        offloaded iSCSI connection
 245  *
 246  *
 247  * @param p_path
 248  * @param p_conn  container of iSCSI connection data
 249  *
 250  * @return enum _ecore_status_t
 251  */
 252 enum _ecore_status_t
 253 ecore_iscsi_clear_connection_sq(struct ecore_hwfn *p_hwfn,
 254                                 struct ecore_iscsi_conn *p_conn);
 255
 256 /**
 257  * @brief ecore_sp_iscsi_func_start
 258  *
 259  * This ramrod inits iSCSI functionality in FW
 260  *
 261  * @param p_path
 262  * @param comp_mode
 263  * @param comp_addr
 264  *
 265  * @return enum _ecore_status_t
 266  */
 267 enum _ecore_status_t
 268 ecore_sp_iscsi_func_start(struct ecore_hwfn *p_hwfn,
 269                           enum spq_mode comp_mode,
 270                           struct ecore_spq_comp_cb *p_comp_addr,
 271                           void *async_event_context,
 272                           iscsi_event_cb_t async_event_cb);
 273
 274 enum _ecore_status_t
 275 ecore_sp_iscsi_func_stop(struct ecore_hwfn *p_hwfn,
 276                          enum spq_mode comp_mode,
 277                          struct ecore_spq_comp_cb *p_comp_addr);
 278
 279 enum _ecore_status_t
 280 ecore_iscsi_get_stats(struct ecore_hwfn *p_hwfn,
 281                       struct ecore_iscsi_stats *stats);
 282
 283 #endif