Loading...
1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2/* QLogic qed NIC Driver
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
5 */
6
7#ifndef _QED_IWARP_H
8#define _QED_IWARP_H
9
10enum qed_iwarp_qp_state {
11 QED_IWARP_QP_STATE_IDLE,
12 QED_IWARP_QP_STATE_RTS,
13 QED_IWARP_QP_STATE_TERMINATE,
14 QED_IWARP_QP_STATE_CLOSING,
15 QED_IWARP_QP_STATE_ERROR,
16};
17
18enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);
19
20#define QED_IWARP_PREALLOC_CNT (256)
21
22#define QED_IWARP_LL2_SYN_TX_SIZE (128)
23#define QED_IWARP_LL2_SYN_RX_SIZE (256)
24
25#define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256)
26#define QED_IWARP_MAX_OOO (16)
27#define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384)
28
29#define QED_IWARP_HANDLE_INVAL (0xff)
30
31struct qed_iwarp_ll2_buff {
32 struct qed_iwarp_ll2_buff *piggy_buf;
33 void *data;
34 dma_addr_t data_phys_addr;
35 u32 buff_size;
36};
37
38struct qed_iwarp_ll2_mpa_buf {
39 struct list_head list_entry;
40 struct qed_iwarp_ll2_buff *ll2_buf;
41 struct unaligned_opaque_data data;
42 u16 tcp_payload_len;
43 u8 placement_offset;
44};
45
46/* In some cases a fpdu will arrive with only one byte of the header, in this
47 * case the fpdu_length will be partial (contain only higher byte and
48 * incomplete bytes will contain the invalid value
49 */
50#define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff
51
52struct qed_iwarp_fpdu {
53 struct qed_iwarp_ll2_buff *mpa_buf;
54 void *mpa_frag_virt;
55 dma_addr_t mpa_frag;
56 dma_addr_t pkt_hdr;
57 u16 mpa_frag_len;
58 u16 fpdu_length;
59 u16 incomplete_bytes;
60 u8 pkt_hdr_size;
61};
62
63struct qed_iwarp_info {
64 struct list_head listen_list; /* qed_iwarp_listener */
65 struct list_head ep_list; /* qed_iwarp_ep */
66 struct list_head ep_free_list; /* pre-allocated ep's */
67 struct list_head mpa_buf_list; /* list of mpa_bufs */
68 struct list_head mpa_buf_pending_list;
69 spinlock_t iw_lock; /* for iwarp resources */
70 spinlock_t qp_lock; /* for teardown races */
71 u32 rcv_wnd_scale;
72 u16 rcv_wnd_size;
73 u16 max_mtu;
74 u8 mac_addr[ETH_ALEN];
75 u8 crc_needed;
76 u8 tcp_flags;
77 u8 ll2_syn_handle;
78 u8 ll2_ooo_handle;
79 u8 ll2_mpa_handle;
80 u8 peer2peer;
81 enum mpa_negotiation_mode mpa_rev;
82 enum mpa_rtr_type rtr_type;
83 struct qed_iwarp_fpdu *partial_fpdus;
84 struct qed_iwarp_ll2_mpa_buf *mpa_bufs;
85 u8 *mpa_intermediate_buf;
86 u16 max_num_partial_fpdus;
87};
88
89enum qed_iwarp_ep_state {
90 QED_IWARP_EP_INIT,
91 QED_IWARP_EP_MPA_REQ_RCVD,
92 QED_IWARP_EP_MPA_OFFLOADED,
93 QED_IWARP_EP_ESTABLISHED,
94 QED_IWARP_EP_CLOSED
95};
96
97union async_output {
98 struct iwarp_eqe_data_mpa_async_completion mpa_response;
99 struct iwarp_eqe_data_tcp_async_completion mpa_request;
100};
101
102#define QED_MAX_PRIV_DATA_LEN (512)
103struct qed_iwarp_ep_memory {
104 u8 in_pdata[QED_MAX_PRIV_DATA_LEN];
105 u8 out_pdata[QED_MAX_PRIV_DATA_LEN];
106 union async_output async_output;
107};
108
109/* Endpoint structure represents a TCP connection. This connection can be
110 * associated with a QP or not (in which case QP==NULL)
111 */
112struct qed_iwarp_ep {
113 struct list_head list_entry;
114 struct qed_rdma_qp *qp;
115 struct qed_iwarp_ep_memory *ep_buffer_virt;
116 dma_addr_t ep_buffer_phys;
117 enum qed_iwarp_ep_state state;
118 int sig;
119 struct qed_iwarp_cm_info cm_info;
120 enum tcp_connect_mode connect_mode;
121 enum mpa_rtr_type rtr_type;
122 enum mpa_negotiation_mode mpa_rev;
123 u32 tcp_cid;
124 u32 cid;
125 u16 mss;
126 u8 remote_mac_addr[6];
127 u8 local_mac_addr[6];
128 bool mpa_reply_processed;
129
130 /* For Passive side - syn packet related data */
131 u16 syn_ip_payload_length;
132 struct qed_iwarp_ll2_buff *syn;
133 dma_addr_t syn_phy_addr;
134
135 /* The event_cb function is called for asynchrounous events associated
136 * with the ep. It is initialized at different entry points depending
137 * on whether the ep is the tcp connection active side or passive side
138 * The cb_context is passed to the event_cb function.
139 */
140 iwarp_event_handler event_cb;
141 void *cb_context;
142};
143
144struct qed_iwarp_listener {
145 struct list_head list_entry;
146
147 /* The event_cb function is called for connection requests.
148 * The cb_context is passed to the event_cb function.
149 */
150 iwarp_event_handler event_cb;
151 void *cb_context;
152 u32 max_backlog;
153 u32 ip_addr[4];
154 u16 port;
155 u16 vlan;
156 u8 ip_version;
157};
158
159int qed_iwarp_alloc(struct qed_hwfn *p_hwfn);
160
161int qed_iwarp_setup(struct qed_hwfn *p_hwfn,
162 struct qed_rdma_start_in_params *params);
163
164void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
165 struct iwarp_init_func_ramrod_data *p_ramrod);
166
167int qed_iwarp_stop(struct qed_hwfn *p_hwfn);
168
169void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn);
170
171void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn);
172
173void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
174
175int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
176 struct qed_rdma_qp *qp,
177 struct qed_rdma_create_qp_out_params *out_params);
178
179int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp,
180 enum qed_iwarp_qp_state new_state, bool internal);
181
182int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);
183
184int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);
185
186void qed_iwarp_query_qp(struct qed_rdma_qp *qp,
187 struct qed_rdma_query_qp_out_params *out_params);
188
189int
190qed_iwarp_connect(void *rdma_cxt,
191 struct qed_iwarp_connect_in *iparams,
192 struct qed_iwarp_connect_out *oparams);
193
194int
195qed_iwarp_create_listen(void *rdma_cxt,
196 struct qed_iwarp_listen_in *iparams,
197 struct qed_iwarp_listen_out *oparams);
198
199int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams);
200
201int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams);
202int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle);
203
204int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams);
205
206#endif