1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2 /* QLogic qed NIC Driver
3  * Copyright (c) 2015-2017  QLogic Corporation
4  * Copyright (c) 2019-2020 Marvell International Ltd.
5  */
6 
7 #ifndef _QED_ISCSI_H
8 #define _QED_ISCSI_H
9 #include <linux/types.h>
10 #include <linux/list.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/qed/tcp_common.h>
14 #include <linux/qed/qed_iscsi_if.h>
15 #include <linux/qed/qed_chain.h>
16 #include "qed.h"
17 #include "qed_hsi.h"
18 #include "qed_mcp.h"
19 #include "qed_sp.h"
20 
21 struct qed_iscsi_info {
22 	spinlock_t lock; /* Connection resources. */
23 	struct list_head free_list;
24 	u16 max_num_outstanding_tasks;
25 	void *event_context;
26 	iscsi_event_cb_t event_cb;
27 };
28 
29 #if IS_ENABLED(CONFIG_QED_ISCSI)
30 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn);
31 
32 void qed_iscsi_setup(struct qed_hwfn *p_hwfn);
33 
34 void qed_iscsi_free(struct qed_hwfn *p_hwfn);
35 
36 /**
37  * qed_get_protocol_stats_iscsi(): Fills provided statistics
38  *                                 struct with statistics.
39  *
40  * @cdev: Qed dev pointer.
41  * @stats: Points to struct that will be filled with statistics.
42  * @is_atomic: Hint from the caller - if the func can sleep or not.
43  *
44  * Context: The function should not sleep in case is_atomic == true.
45  * Return: Void.
46  */
47 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
48 				  struct qed_mcp_iscsi_stats *stats,
49 				  bool is_atomic);
50 #else /* IS_ENABLED(CONFIG_QED_ISCSI) */
qed_iscsi_alloc(struct qed_hwfn * p_hwfn)51 static inline int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
52 {
53 	return -EINVAL;
54 }
55 
qed_iscsi_setup(struct qed_hwfn * p_hwfn)56 static inline void qed_iscsi_setup(struct qed_hwfn *p_hwfn) {}
57 
qed_iscsi_free(struct qed_hwfn * p_hwfn)58 static inline void qed_iscsi_free(struct qed_hwfn *p_hwfn) {}
59 
60 static inline void
qed_get_protocol_stats_iscsi(struct qed_dev * cdev,struct qed_mcp_iscsi_stats * stats,bool is_atomic)61 qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
62 			     struct qed_mcp_iscsi_stats *stats,
63 			     bool is_atomic) {}
64 #endif /* IS_ENABLED(CONFIG_QED_ISCSI) */
65 
66 #endif
67