drivers/net/ethernet/qlogic/qed/qed_iscsi.h

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef _QED_ISCSI_H
  34 #define _QED_ISCSI_H
  35 #include <linux/types.h>
  36 #include <linux/list.h>
  37 #include <linux/slab.h>
  38 #include <linux/spinlock.h>
  39 #include <linux/qed/tcp_common.h>
  40 #include <linux/qed/qed_iscsi_if.h>
  41 #include <linux/qed/qed_chain.h>
  42 #include "qed.h"
  43 #include "qed_hsi.h"
  44 #include "qed_mcp.h"
  45 #include "qed_sp.h"
  46
  47 struct qed_iscsi_info {
  48         spinlock_t lock; /* Connection resources. */
  49         struct list_head free_list;
  50         u16 max_num_outstanding_tasks;
  51         void *event_context;
  52         iscsi_event_cb_t event_cb;
  53 };
  54
  55 #ifdef CONFIG_QED_LL2
  56 extern const struct qed_ll2_ops qed_ll2_ops_pass;
  57 #endif
  58
  59 #if IS_ENABLED(CONFIG_QED_ISCSI)
  60 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn);
  61
  62 void qed_iscsi_setup(struct qed_hwfn *p_hwfn);
  63
  64 void qed_iscsi_free(struct qed_hwfn *p_hwfn);
  65
  66 /**
  67  * @brief - Fills provided statistics struct with statistics.
  68  *
  69  * @param cdev
  70  * @param stats - points to struct that will be filled with statistics.
  71  */
  72 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
  73                                   struct qed_mcp_iscsi_stats *stats);
  74 #else /* IS_ENABLED(CONFIG_QED_ISCSI) */
  75 static inline int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
  76 {
  77         return -EINVAL;
  78 }
  79
  80 static inline void qed_iscsi_setup(struct qed_hwfn *p_hwfn) {}
  81
  82 static inline void qed_iscsi_free(struct qed_hwfn *p_hwfn) {}
  83
  84 static inline void
  85 qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
  86                              struct qed_mcp_iscsi_stats *stats) {}
  87 #endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
  88
  89 #endif