Release 4.12 include/linux/qed/qed_iscsi_if.h
/* QLogic qed NIC Driver
* Copyright (c) 2015-2017 QLogic Corporation
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and /or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _QED_ISCSI_IF_H
#define _QED_ISCSI_IF_H
#include <linux/types.h>
#include <linux/qed/qed_if.h>
typedef int (*iscsi_event_cb_t) (void *context,
u8 fw_event_code, void *fw_handle);
struct qed_iscsi_stats {
u64 iscsi_rx_bytes_cnt;
u64 iscsi_rx_packet_cnt;
u64 iscsi_rx_new_ooo_isle_events_cnt;
u32 iscsi_cmdq_threshold_cnt;
u32 iscsi_rq_threshold_cnt;
u32 iscsi_immq_threshold_cnt;
u64 iscsi_rx_dropped_pdus_task_not_valid;
u64 iscsi_rx_data_pdu_cnt;
u64 iscsi_rx_r2t_pdu_cnt;
u64 iscsi_rx_total_pdu_cnt;
u64 iscsi_tx_go_to_slow_start_event_cnt;
u64 iscsi_tx_fast_retransmit_event_cnt;
u64 iscsi_tx_data_pdu_cnt;
u64 iscsi_tx_r2t_pdu_cnt;
u64 iscsi_tx_total_pdu_cnt;
u64 iscsi_tx_bytes_cnt;
u64 iscsi_tx_packet_cnt;
};
struct qed_dev_iscsi_info {
struct qed_dev_info common;
void __iomem *primary_dbq_rq_addr;
void __iomem *secondary_bdq_rq_addr;
u8 num_cqs;
};
struct qed_iscsi_id_params {
u8 mac[ETH_ALEN];
u32 ip[4];
u16 port;
};
struct qed_iscsi_params_offload {
u8 layer_code;
dma_addr_t sq_pbl_addr;
u32 initial_ack;
struct qed_iscsi_id_params src;
struct qed_iscsi_id_params dst;
u16 vlan_id;
u8 tcp_flags;
u8 ip_version;
u8 default_cq;
u8 ka_max_probe_cnt;
u8 dup_ack_theshold;
u32 rcv_next;
u32 snd_una;
u32 snd_next;
u32 snd_max;
u32 snd_wnd;
u32 rcv_wnd;
u32 snd_wl1;
u32 cwnd;
u32 ss_thresh;
u16 srtt;
u16 rtt_var;
u32 ts_time;
u32 ts_recent;
u32 ts_recent_age;
u32 total_rt;
u32 ka_timeout_delta;
u32 rt_timeout_delta;
u8 dup_ack_cnt;
u8 snd_wnd_probe_cnt;
u8 ka_probe_cnt;
u8 rt_cnt;
u32 flow_label;
u32 ka_timeout;
u32 ka_interval;
u32 max_rt_time;
u32 initial_rcv_wnd;
u8 ttl;
u8 tos_or_tc;
u16 remote_port;
u16 local_port;
u16 mss;
u8 snd_wnd_scale;
u8 rcv_wnd_scale;
u32 ts_ticks_per_second;
u16 da_timeout_value;
u8 ack_frequency;
};
struct qed_iscsi_params_update {
u8 update_flag;
#define QED_ISCSI_CONN_HD_EN BIT(0)
#define QED_ISCSI_CONN_DD_EN BIT(1)
#define QED_ISCSI_CONN_INITIAL_R2T BIT(2)
#define QED_ISCSI_CONN_IMMEDIATE_DATA BIT(3)
u32 max_seq_size;
u32 max_recv_pdu_length;
u32 max_send_pdu_length;
u32 first_seq_length;
u32 exp_stat_sn;
};
#define MAX_TID_BLOCKS_ISCSI (512)
struct qed_iscsi_tid {
u32 size; /* In bytes per task */
u32 num_tids_per_block;
u8 *blocks[MAX_TID_BLOCKS_ISCSI];
};
struct qed_iscsi_cb_ops {
struct qed_common_cb_ops common;
};
/**
* struct qed_iscsi_ops - qed iSCSI operations.
* @common: common operations pointer
* @ll2: light L2 operations pointer
* @fill_dev_info: fills iSCSI specific information
* @param cdev
* @param info
* @return 0 on sucesss, otherwise error value.
* @register_ops: register iscsi operations
* @param cdev
* @param ops - specified using qed_iscsi_cb_ops
* @param cookie - driver private
* @start: iscsi in FW
* @param cdev
* @param tasks - qed will fill information about tasks
* return 0 on success, otherwise error value.
* @stop: iscsi in FW
* @param cdev
* return 0 on success, otherwise error value.
* @acquire_conn: acquire a new iscsi connection
* @param cdev
* @param handle - qed will fill handle that should be
* used henceforth as identifier of the
* connection.
* @param p_doorbell - qed will fill the address of the
* doorbell.
* @return 0 on sucesss, otherwise error value.
* @release_conn: release a previously acquired iscsi connection
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @offload_conn: configures an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @param conn_info - the configuration to use for the
* offload.
* @return 0 on success, otherwise error value.
* @update_conn: updates an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @param conn_info - the configuration to use for the
* offload.
* @return 0 on success, otherwise error value.
* @destroy_conn: stops an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @clear_sq: clear all task in sq
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @get_stats: iSCSI related statistics
* @param cdev
* @param stats - pointer to struck that would be filled
* we stats
* @return 0 on success, error otherwise.
*/
struct qed_iscsi_ops {
const struct qed_common_ops *common;
const struct qed_ll2_ops *ll2;
int (*fill_dev_info)(struct qed_dev *cdev,
struct qed_dev_iscsi_info *info);
void (*register_ops)(struct qed_dev *cdev,
struct qed_iscsi_cb_ops *ops, void *cookie);
int (*start)(struct qed_dev *cdev,
struct qed_iscsi_tid *tasks,
void *event_context, iscsi_event_cb_t async_event_cb);
int (*stop)(struct qed_dev *cdev);
int (*acquire_conn)(struct qed_dev *cdev,
u32 *handle,
u32 *fw_cid, void __iomem **p_doorbell);
int (*release_conn)(struct qed_dev *cdev, u32 handle);
int (*offload_conn)(struct qed_dev *cdev,
u32 handle,
struct qed_iscsi_params_offload *conn_info);
int (*update_conn)(struct qed_dev *cdev,
u32 handle,
struct qed_iscsi_params_update *conn_info);
int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn);
int (*clear_sq)(struct qed_dev *cdev, u32 handle);
int (*get_stats)(struct qed_dev *cdev,
struct qed_iscsi_stats *stats);
};
const struct qed_iscsi_ops *qed_get_iscsi_ops(void);
void qed_put_iscsi_ops(void);
#endif
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