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