76684ab8f4
This patch introduces the NVMeTCP HSI and HSI functionality in order to initialize and interact with the HW device as part of the connection level HSI. This includes: - Connection offload: offload a TCP connection to the FW. - Connection update: update the ICReq-ICResp params - Connection clear SQ: outstanding IOs FW flush. - Connection termination: terminate the TCP connection and flush the FW. Acked-by: Igor Russkikh <irusskikh@marvell.com> Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com> Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com> Signed-off-by: Shai Malin <smalin@marvell.com> Signed-off-by: Michal Kalderon <mkalderon@marvell.com> Signed-off-by: Ariel Elior <aelior@marvell.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
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/* Copyright 2021 Marvell. All rights reserved. */
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#ifndef _QED_NVMETCP_H
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#define _QED_NVMETCP_H
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/qed/tcp_common.h>
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#include <linux/qed/qed_nvmetcp_if.h>
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#include <linux/qed/qed_chain.h>
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#include "qed.h"
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#include "qed_hsi.h"
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#include "qed_mcp.h"
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#include "qed_sp.h"
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#define QED_NVMETCP_FW_CQ_SIZE (4 * 1024)
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/* tcp parameters */
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#define QED_TCP_FLOW_LABEL 0
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#define QED_TCP_TWO_MSL_TIMER 4000
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#define QED_TCP_HALF_WAY_CLOSE_TIMEOUT 10
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#define QED_TCP_MAX_FIN_RT 2
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#define QED_TCP_SWS_TIMER 5000
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struct qed_nvmetcp_info {
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spinlock_t lock; /* Connection resources. */
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struct list_head free_list;
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u16 max_num_outstanding_tasks;
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void *event_context;
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nvmetcp_event_cb_t event_cb;
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};
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struct qed_hash_nvmetcp_con {
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struct hlist_node node;
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struct qed_nvmetcp_conn *con;
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};
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struct qed_nvmetcp_conn {
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struct list_head list_entry;
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bool free_on_delete;
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u16 conn_id;
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u32 icid;
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u32 fw_cid;
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u8 layer_code;
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u8 offl_flags;
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u8 connect_mode;
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dma_addr_t sq_pbl_addr;
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struct qed_chain r2tq;
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struct qed_chain xhq;
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struct qed_chain uhq;
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u8 local_mac[6];
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u8 remote_mac[6];
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u8 ip_version;
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u8 ka_max_probe_cnt;
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u16 vlan_id;
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u16 tcp_flags;
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u32 remote_ip[4];
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u32 local_ip[4];
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u32 flow_label;
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u32 ka_timeout;
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u32 ka_interval;
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u32 max_rt_time;
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u8 ttl;
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u8 tos_or_tc;
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u16 remote_port;
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u16 local_port;
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u16 mss;
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u8 rcv_wnd_scale;
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u32 rcv_wnd;
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u32 cwnd;
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u8 update_flag;
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u8 default_cq;
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u8 abortive_dsconnect;
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u32 max_seq_size;
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u32 max_recv_pdu_length;
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u32 max_send_pdu_length;
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u32 first_seq_length;
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u16 physical_q0;
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u16 physical_q1;
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u16 nvmetcp_cccid_max_range;
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dma_addr_t nvmetcp_cccid_itid_table_addr;
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};
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#if IS_ENABLED(CONFIG_QED_NVMETCP)
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int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn);
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void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn);
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void qed_nvmetcp_free(struct qed_hwfn *p_hwfn);
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#else /* IS_ENABLED(CONFIG_QED_NVMETCP) */
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static inline int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn)
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{
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return -EINVAL;
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}
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static inline void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn) {}
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static inline void qed_nvmetcp_free(struct qed_hwfn *p_hwfn) {}
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#endif /* IS_ENABLED(CONFIG_QED_NVMETCP) */
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#endif
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