| /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ |
| /* QLogic qed NIC Driver |
| * Copyright (c) 2015-2017 QLogic Corporation |
| * Copyright (c) 2019-2020 Marvell International Ltd. |
| */ |
| |
| #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_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; |
| 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. |
| * @change_mac Change MAC of interface |
| * @param cdev |
| * @param handle - the connection handle. |
| * @param mac - new MAC to configure. |
| * @return 0 on success, otherwise error value. |
| */ |
| 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); |
| |
| int (*change_mac)(struct qed_dev *cdev, u32 handle, const u8 *mac); |
| }; |
| |
| const struct qed_iscsi_ops *qed_get_iscsi_ops(void); |
| void qed_put_iscsi_ops(void); |
| #endif |