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

source code of linux/drivers/net/ethernet/qlogic/qed/qed_nvmetcp.h