1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2/* Copyright 2021 Marvell. All rights reserved. */
3
4#ifndef _QED_NVMETCP_H
5#define _QED_NVMETCP_H
6
7#include <linux/types.h>
8#include <linux/list.h>
9#include <linux/slab.h>
10#include <linux/spinlock.h>
11#include <linux/qed/tcp_common.h>
12#include <linux/qed/qed_nvmetcp_if.h>
13#include <linux/qed/qed_chain.h>
14#include "qed.h"
15#include "qed_hsi.h"
16#include "qed_mcp.h"
17#include "qed_sp.h"
18
19#define QED_NVMETCP_FW_CQ_SIZE (4 * 1024)
20
21/* tcp parameters */
22#define QED_TCP_FLOW_LABEL 0
23#define QED_TCP_TWO_MSL_TIMER 4000
24#define QED_TCP_HALF_WAY_CLOSE_TIMEOUT 10
25#define QED_TCP_MAX_FIN_RT 2
26#define QED_TCP_SWS_TIMER 5000
27
28struct qed_nvmetcp_info {
29	spinlock_t lock; /* Connection resources. */
30	struct list_head free_list;
31	u16 max_num_outstanding_tasks;
32	void *event_context;
33	nvmetcp_event_cb_t event_cb;
34};
35
36struct qed_hash_nvmetcp_con {
37	struct hlist_node node;
38	struct qed_nvmetcp_conn *con;
39};
40
41struct qed_nvmetcp_conn {
42	struct list_head list_entry;
43	bool free_on_delete;
44	u16 conn_id;
45	u32 icid;
46	u32 fw_cid;
47	u8 layer_code;
48	u8 offl_flags;
49	u8 connect_mode;
50	dma_addr_t sq_pbl_addr;
51	struct qed_chain r2tq;
52	struct qed_chain xhq;
53	struct qed_chain uhq;
54	u8 local_mac[6];
55	u8 remote_mac[6];
56	u8 ip_version;
57	u8 ka_max_probe_cnt;
58	u16 vlan_id;
59	u16 tcp_flags;
60	u32 remote_ip[4];
61	u32 local_ip[4];
62	u32 flow_label;
63	u32 ka_timeout;
64	u32 ka_interval;
65	u32 max_rt_time;
66	u8 ttl;
67	u8 tos_or_tc;
68	u16 remote_port;
69	u16 local_port;
70	u16 mss;
71	u8 rcv_wnd_scale;
72	u32 rcv_wnd;
73	u32 cwnd;
74	u8 update_flag;
75	u8 default_cq;
76	u8 abortive_dsconnect;
77	u32 max_seq_size;
78	u32 max_recv_pdu_length;
79	u32 max_send_pdu_length;
80	u32 first_seq_length;
81	u16 physical_q0;
82	u16 physical_q1;
83	u16 nvmetcp_cccid_max_range;
84	dma_addr_t nvmetcp_cccid_itid_table_addr;
85};
86
87#if IS_ENABLED(CONFIG_QED_NVMETCP)
88int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn);
89void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn);
90void qed_nvmetcp_free(struct qed_hwfn *p_hwfn);
91
92#else /* IS_ENABLED(CONFIG_QED_NVMETCP) */
93static inline int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn)
94{
95	return -EINVAL;
96}
97
98static inline void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn) {}
99static inline void qed_nvmetcp_free(struct qed_hwfn *p_hwfn) {}
100
101#endif /* IS_ENABLED(CONFIG_QED_NVMETCP) */
102
103#endif
104