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