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7 #ifndef _QEDI_ISCSI_H_
8 #define _QEDI_ISCSI_H_
9
10 #include <linux/socket.h>
11 #include <linux/completion.h>
12 #include "qedi.h"
13
14 #define ISCSI_MAX_SESS_PER_HBA 4096
15
16 #define DEF_KA_TIMEOUT 7200000
17 #define DEF_KA_INTERVAL 10000
18 #define DEF_KA_MAX_PROBE_COUNT 10
19 #define DEF_TOS 0
20 #define DEF_TTL 0xfe
21 #define DEF_SND_SEQ_SCALE 0
22 #define DEF_RCV_BUF 0xffff
23 #define DEF_SND_BUF 0xffff
24 #define DEF_SEED 0
25 #define DEF_MAX_RT_TIME 8000
26 #define DEF_MAX_DA_COUNT 2
27 #define DEF_SWS_TIMER 1000
28 #define DEF_MAX_CWND 2
29 #define DEF_PATH_MTU 1500
30 #define DEF_MSS 1460
31 #define DEF_LL2_MTU 1560
32 #define JUMBO_MTU 9000
33
34 #define MIN_MTU 576
35 #define IPV4_HDR_LEN 20
36 #define IPV6_HDR_LEN 40
37 #define TCP_HDR_LEN 20
38 #define TCP_OPTION_LEN 12
39 #define VLAN_LEN 4
40
41 enum {
42 EP_STATE_IDLE = 0x0,
43 EP_STATE_ACQRCONN_START = 0x1,
44 EP_STATE_ACQRCONN_COMPL = 0x2,
45 EP_STATE_OFLDCONN_START = 0x4,
46 EP_STATE_OFLDCONN_COMPL = 0x8,
47 EP_STATE_DISCONN_START = 0x10,
48 EP_STATE_DISCONN_COMPL = 0x20,
49 EP_STATE_CLEANUP_START = 0x40,
50 EP_STATE_CLEANUP_CMPL = 0x80,
51 EP_STATE_TCP_FIN_RCVD = 0x100,
52 EP_STATE_TCP_RST_RCVD = 0x200,
53 EP_STATE_LOGOUT_SENT = 0x400,
54 EP_STATE_LOGOUT_RESP_RCVD = 0x800,
55 EP_STATE_CLEANUP_FAILED = 0x1000,
56 EP_STATE_OFLDCONN_FAILED = 0x2000,
57 EP_STATE_CONNECT_FAILED = 0x4000,
58 EP_STATE_DISCONN_TIMEDOUT = 0x8000,
59 EP_STATE_OFLDCONN_NONE = 0x10000,
60 };
61
62 struct qedi_conn;
63
64 struct qedi_endpoint {
65 struct qedi_ctx *qedi;
66 u32 dst_addr[4];
67 u32 src_addr[4];
68 u16 src_port;
69 u16 dst_port;
70 u16 vlan_id;
71 u16 pmtu;
72 u8 src_mac[ETH_ALEN];
73 u8 dst_mac[ETH_ALEN];
74 u8 ip_type;
75 int state;
76 wait_queue_head_t ofld_wait;
77 wait_queue_head_t tcp_ofld_wait;
78 u32 iscsi_cid;
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80 u32 handle;
81 u32 fw_cid;
82 void __iomem *p_doorbell;
83
84
85 struct iscsi_wqe *sq;
86 dma_addr_t sq_dma;
87
88 u16 sq_prod_idx;
89 u16 fw_sq_prod_idx;
90 u16 sq_con_idx;
91 u32 sq_mem_size;
92
93 void *sq_pbl;
94 dma_addr_t sq_pbl_dma;
95 u32 sq_pbl_size;
96 struct qedi_conn *conn;
97 struct work_struct offload_work;
98 };
99
100 #define QEDI_SQ_WQES_MIN 16
101
102 struct qedi_io_bdt {
103 struct scsi_sge *sge_tbl;
104 dma_addr_t sge_tbl_dma;
105 u16 sge_valid;
106 };
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132 struct generic_pdu_resc {
133 char *req_buf;
134 dma_addr_t req_dma_addr;
135 u32 req_buf_size;
136 char *req_wr_ptr;
137 struct iscsi_hdr resp_hdr;
138 char *resp_buf;
139 dma_addr_t resp_dma_addr;
140 u32 resp_buf_size;
141 char *resp_wr_ptr;
142 char *req_bd_tbl;
143 dma_addr_t req_bd_dma;
144 char *resp_bd_tbl;
145 dma_addr_t resp_bd_dma;
146 };
147
148 struct qedi_conn {
149 struct iscsi_cls_conn *cls_conn;
150 struct qedi_ctx *qedi;
151 struct qedi_endpoint *ep;
152 struct list_head active_cmd_list;
153 spinlock_t list_lock;
154 u32 active_cmd_count;
155 u32 cmd_cleanup_req;
156 u32 cmd_cleanup_cmpl;
157
158 u32 iscsi_conn_id;
159 int itt;
160 int abrt_conn;
161 #define QEDI_CID_RESERVED 0x5AFF
162 u32 fw_cid;
163
164
165
166 struct generic_pdu_resc gen_pdu;
167
168 struct list_head tmf_work_list;
169 wait_queue_head_t wait_queue;
170 spinlock_t tmf_work_lock;
171 unsigned long flags;
172 #define QEDI_CONN_FW_CLEANUP 1
173 };
174
175 struct qedi_cmd {
176 struct list_head io_cmd;
177 bool io_cmd_in_list;
178 struct iscsi_hdr hdr;
179 struct qedi_conn *conn;
180 struct scsi_cmnd *scsi_cmd;
181 struct scatterlist *sg;
182 struct qedi_io_bdt io_tbl;
183 struct e4_iscsi_task_context request;
184 unsigned char *sense_buffer;
185 dma_addr_t sense_buffer_dma;
186 u16 task_id;
187
188
189 struct iscsi_task *task;
190 struct work_struct tmf_work;
191 int state;
192 #define CLEANUP_WAIT 1
193 #define CLEANUP_RECV 2
194 #define CLEANUP_WAIT_FAILED 3
195 #define CLEANUP_NOT_REQUIRED 4
196 #define LUN_RESET_RESPONSE_RECEIVED 5
197 #define RESPONSE_RECEIVED 6
198
199 int type;
200 #define TYPEIO 1
201 #define TYPERESET 2
202
203 struct qedi_work_map *list_tmf_work;
204
205 bool use_slowpath;
206
207 struct iscsi_tm_rsp *tmf_resp_buf;
208 struct qedi_work cqe_work;
209 };
210
211 struct qedi_work_map {
212 struct list_head list;
213 struct qedi_cmd *qedi_cmd;
214 int rtid;
215
216 int state;
217 #define QEDI_WORK_QUEUED 1
218 #define QEDI_WORK_SCHEDULED 2
219 #define QEDI_WORK_EXIT 3
220
221 struct work_struct *ptr_tmf_work;
222 };
223
224 struct qedi_boot_target {
225 char ip_addr[64];
226 char iscsi_name[255];
227 u32 ipv6_en;
228 };
229
230 #define qedi_set_itt(task_id, itt) ((u32)(((task_id) & 0xffff) | ((itt) << 16)))
231 #define qedi_get_itt(cqe) (cqe.iscsi_hdr.cmd.itt >> 16)
232
233 #define QEDI_OFLD_WAIT_STATE(q) ((q)->state == EP_STATE_OFLDCONN_FAILED || \
234 (q)->state == EP_STATE_OFLDCONN_COMPL)
235
236 #endif