summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/qlogic/qed/qed_iwarp.h
blob: c1b2057d23b80d384aca8b2035c5d0854715c4bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
/* 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_IWARP_H
#define _QED_IWARP_H

enum qed_iwarp_qp_state {
	QED_IWARP_QP_STATE_IDLE,
	QED_IWARP_QP_STATE_RTS,
	QED_IWARP_QP_STATE_TERMINATE,
	QED_IWARP_QP_STATE_CLOSING,
	QED_IWARP_QP_STATE_ERROR,
};

enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);

#define QED_IWARP_PREALLOC_CNT  (256)

#define QED_IWARP_LL2_SYN_TX_SIZE       (128)
#define QED_IWARP_LL2_SYN_RX_SIZE       (256)

#define QED_IWARP_LL2_OOO_DEF_TX_SIZE   (256)
#define QED_IWARP_MAX_OOO		(16)
#define QED_IWARP_LL2_OOO_MAX_RX_SIZE   (16384)

#define QED_IWARP_HANDLE_INVAL		(0xff)

struct qed_iwarp_ll2_buff {
	struct qed_iwarp_ll2_buff *piggy_buf;
	void *data;
	dma_addr_t data_phys_addr;
	u32 buff_size;
};

struct qed_iwarp_ll2_mpa_buf {
	struct list_head list_entry;
	struct qed_iwarp_ll2_buff *ll2_buf;
	struct unaligned_opaque_data data;
	u16 tcp_payload_len;
	u8 placement_offset;
};

/* In some cases a fpdu will arrive with only one byte of the header, in this
 * case the fpdu_length will be partial (contain only higher byte and
 * incomplete bytes will contain the invalid value
 */
#define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff

struct qed_iwarp_fpdu {
	struct qed_iwarp_ll2_buff *mpa_buf;
	void *mpa_frag_virt;
	dma_addr_t mpa_frag;
	dma_addr_t pkt_hdr;
	u16 mpa_frag_len;
	u16 fpdu_length;
	u16 incomplete_bytes;
	u8 pkt_hdr_size;
};

struct qed_iwarp_info {
	struct list_head listen_list;	/* qed_iwarp_listener */
	struct list_head ep_list;	/* qed_iwarp_ep */
	struct list_head ep_free_list;	/* pre-allocated ep's */
	struct list_head mpa_buf_list;	/* list of mpa_bufs */
	struct list_head mpa_buf_pending_list;
	spinlock_t iw_lock;	/* for iwarp resources */
	spinlock_t qp_lock;	/* for teardown races */
	u32 rcv_wnd_scale;
	u16 rcv_wnd_size;
	u16 max_mtu;
	u8 mac_addr[ETH_ALEN];
	u8 crc_needed;
	u8 tcp_flags;
	u8 ll2_syn_handle;
	u8 ll2_ooo_handle;
	u8 ll2_mpa_handle;
	u8 peer2peer;
	enum mpa_negotiation_mode mpa_rev;
	enum mpa_rtr_type rtr_type;
	struct qed_iwarp_fpdu *partial_fpdus;
	struct qed_iwarp_ll2_mpa_buf *mpa_bufs;
	u8 *mpa_intermediate_buf;
	u16 max_num_partial_fpdus;
};

enum qed_iwarp_ep_state {
	QED_IWARP_EP_INIT,
	QED_IWARP_EP_MPA_REQ_RCVD,
	QED_IWARP_EP_MPA_OFFLOADED,
	QED_IWARP_EP_ESTABLISHED,
	QED_IWARP_EP_CLOSED
};

union async_output {
	struct iwarp_eqe_data_mpa_async_completion mpa_response;
	struct iwarp_eqe_data_tcp_async_completion mpa_request;
};

#define QED_MAX_PRIV_DATA_LEN (512)
struct qed_iwarp_ep_memory {
	u8 in_pdata[QED_MAX_PRIV_DATA_LEN];
	u8 out_pdata[QED_MAX_PRIV_DATA_LEN];
	union async_output async_output;
};

/* Endpoint structure represents a TCP connection. This connection can be
 * associated with a QP or not (in which case QP==NULL)
 */
struct qed_iwarp_ep {
	struct list_head list_entry;
	struct qed_rdma_qp *qp;
	struct qed_iwarp_ep_memory *ep_buffer_virt;
	dma_addr_t ep_buffer_phys;
	enum qed_iwarp_ep_state state;
	int sig;
	struct qed_iwarp_cm_info cm_info;
	enum tcp_connect_mode connect_mode;
	enum mpa_rtr_type rtr_type;
	enum mpa_negotiation_mode mpa_rev;
	u32 tcp_cid;
	u32 cid;
	u16 mss;
	u8 remote_mac_addr[6];
	u8 local_mac_addr[6];
	bool mpa_reply_processed;

	/* For Passive side - syn packet related data */
	u16 syn_ip_payload_length;
	struct qed_iwarp_ll2_buff *syn;
	dma_addr_t syn_phy_addr;

	/* The event_cb function is called for asynchrounous events associated
	 * with the ep. It is initialized at different entry points depending
	 * on whether the ep is the tcp connection active side or passive side
	 * The cb_context is passed to the event_cb function.
	 */
	iwarp_event_handler event_cb;
	void *cb_context;
};

struct qed_iwarp_listener {
	struct list_head list_entry;

	/* The event_cb function is called for connection requests.
	 * The cb_context is passed to the event_cb function.
	 */
	iwarp_event_handler event_cb;
	void *cb_context;
	u32 max_backlog;
	u32 ip_addr[4];
	u16 port;
	u16 vlan;
	u8 ip_version;
};

int qed_iwarp_alloc(struct qed_hwfn *p_hwfn);

int qed_iwarp_setup(struct qed_hwfn *p_hwfn,
		    struct qed_rdma_start_in_params *params);

void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
			      struct iwarp_init_func_ramrod_data *p_ramrod);

int qed_iwarp_stop(struct qed_hwfn *p_hwfn);

void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn);

void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn);

void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
			struct qed_rdma_qp *qp,
			struct qed_rdma_create_qp_out_params *out_params);

int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp,
			enum qed_iwarp_qp_state new_state, bool internal);

int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);

int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);

void qed_iwarp_query_qp(struct qed_rdma_qp *qp,
			struct qed_rdma_query_qp_out_params *out_params);

int
qed_iwarp_connect(void *rdma_cxt,
		  struct qed_iwarp_connect_in *iparams,
		  struct qed_iwarp_connect_out *oparams);

int
qed_iwarp_create_listen(void *rdma_cxt,
			struct qed_iwarp_listen_in *iparams,
			struct qed_iwarp_listen_out *oparams);

int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams);

int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams);
int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle);

int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams);

#endif