drivers/net/ethernet/qlogic/qed/qed_nvmetcp.h

   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