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 
28 struct 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 
36 struct qed_hash_nvmetcp_con {
37 	struct hlist_node node;
38 	struct qed_nvmetcp_conn *con;
39 };
40 
41 struct 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)
88 int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn);
89 void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn);
90 void qed_nvmetcp_free(struct qed_hwfn *p_hwfn);
91 
92 #else /* IS_ENABLED(CONFIG_QED_NVMETCP) */
93 static inline int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn)
94 {
95 	return -EINVAL;
96 }
97 
98 static inline void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn) {}
99 static inline void qed_nvmetcp_free(struct qed_hwfn *p_hwfn) {}
100 
101 #endif /* IS_ENABLED(CONFIG_QED_NVMETCP) */
102 
103 #endif
104