1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
3 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
11 void rxe_init_av(struct rdma_ah_attr
*attr
, struct rxe_av
*av
);
13 int rxe_av_chk_attr(struct rxe_dev
*rxe
, struct rdma_ah_attr
*attr
);
15 void rxe_av_from_attr(u8 port_num
, struct rxe_av
*av
,
16 struct rdma_ah_attr
*attr
);
18 void rxe_av_to_attr(struct rxe_av
*av
, struct rdma_ah_attr
*attr
);
20 void rxe_av_fill_ip_info(struct rxe_av
*av
, struct rdma_ah_attr
*attr
);
22 struct rxe_av
*rxe_get_av(struct rxe_pkt_info
*pkt
);
25 int rxe_cq_chk_attr(struct rxe_dev
*rxe
, struct rxe_cq
*cq
,
26 int cqe
, int comp_vector
);
28 int rxe_cq_from_init(struct rxe_dev
*rxe
, struct rxe_cq
*cq
, int cqe
,
29 int comp_vector
, struct ib_udata
*udata
,
30 struct rxe_create_cq_resp __user
*uresp
);
32 int rxe_cq_resize_queue(struct rxe_cq
*cq
, int new_cqe
,
33 struct rxe_resize_cq_resp __user
*uresp
,
34 struct ib_udata
*udata
);
36 int rxe_cq_post(struct rxe_cq
*cq
, struct rxe_cqe
*cqe
, int solicited
);
38 void rxe_cq_disable(struct rxe_cq
*cq
);
40 void rxe_cq_cleanup(struct rxe_pool_entry
*arg
);
43 int rxe_mcast_get_grp(struct rxe_dev
*rxe
, union ib_gid
*mgid
,
44 struct rxe_mc_grp
**grp_p
);
46 int rxe_mcast_add_grp_elem(struct rxe_dev
*rxe
, struct rxe_qp
*qp
,
47 struct rxe_mc_grp
*grp
);
49 int rxe_mcast_drop_grp_elem(struct rxe_dev
*rxe
, struct rxe_qp
*qp
,
52 void rxe_drop_all_mcast_groups(struct rxe_qp
*qp
);
54 void rxe_mc_cleanup(struct rxe_pool_entry
*arg
);
57 struct rxe_mmap_info
{
58 struct list_head pending_mmaps
;
59 struct ib_ucontext
*context
;
66 void rxe_mmap_release(struct kref
*ref
);
68 struct rxe_mmap_info
*rxe_create_mmap_info(struct rxe_dev
*dev
, u32 size
,
69 struct ib_udata
*udata
, void *obj
);
71 int rxe_mmap(struct ib_ucontext
*context
, struct vm_area_struct
*vma
);
79 void rxe_mem_init_dma(struct rxe_pd
*pd
,
80 int access
, struct rxe_mem
*mem
);
82 int rxe_mem_init_user(struct rxe_pd
*pd
, u64 start
,
83 u64 length
, u64 iova
, int access
, struct ib_udata
*udata
,
86 int rxe_mem_init_fast(struct rxe_pd
*pd
,
87 int max_pages
, struct rxe_mem
*mem
);
89 int rxe_mem_copy(struct rxe_mem
*mem
, u64 iova
, void *addr
,
90 int length
, enum copy_direction dir
, u32
*crcp
);
92 int copy_data(struct rxe_pd
*pd
, int access
,
93 struct rxe_dma_info
*dma
, void *addr
, int length
,
94 enum copy_direction dir
, u32
*crcp
);
96 void *iova_to_vaddr(struct rxe_mem
*mem
, u64 iova
, int length
);
103 struct rxe_mem
*lookup_mem(struct rxe_pd
*pd
, int access
, u32 key
,
104 enum lookup_type type
);
106 int mem_check_range(struct rxe_mem
*mem
, u64 iova
, size_t length
);
108 void rxe_mem_cleanup(struct rxe_pool_entry
*arg
);
110 int advance_dma_data(struct rxe_dma_info
*dma
, unsigned int length
);
113 void rxe_loopback(struct sk_buff
*skb
);
114 int rxe_send(struct rxe_pkt_info
*pkt
, struct sk_buff
*skb
);
115 struct sk_buff
*rxe_init_packet(struct rxe_dev
*rxe
, struct rxe_av
*av
,
116 int paylen
, struct rxe_pkt_info
*pkt
);
117 int rxe_prepare(struct rxe_pkt_info
*pkt
, struct sk_buff
*skb
, u32
*crc
);
118 const char *rxe_parent_name(struct rxe_dev
*rxe
, unsigned int port_num
);
119 struct device
*rxe_dma_device(struct rxe_dev
*rxe
);
120 int rxe_mcast_add(struct rxe_dev
*rxe
, union ib_gid
*mgid
);
121 int rxe_mcast_delete(struct rxe_dev
*rxe
, union ib_gid
*mgid
);
124 int rxe_qp_chk_init(struct rxe_dev
*rxe
, struct ib_qp_init_attr
*init
);
126 int rxe_qp_from_init(struct rxe_dev
*rxe
, struct rxe_qp
*qp
, struct rxe_pd
*pd
,
127 struct ib_qp_init_attr
*init
,
128 struct rxe_create_qp_resp __user
*uresp
,
129 struct ib_pd
*ibpd
, struct ib_udata
*udata
);
131 int rxe_qp_to_init(struct rxe_qp
*qp
, struct ib_qp_init_attr
*init
);
133 int rxe_qp_chk_attr(struct rxe_dev
*rxe
, struct rxe_qp
*qp
,
134 struct ib_qp_attr
*attr
, int mask
);
136 int rxe_qp_from_attr(struct rxe_qp
*qp
, struct ib_qp_attr
*attr
,
137 int mask
, struct ib_udata
*udata
);
139 int rxe_qp_to_attr(struct rxe_qp
*qp
, struct ib_qp_attr
*attr
, int mask
);
141 void rxe_qp_error(struct rxe_qp
*qp
);
143 void rxe_qp_destroy(struct rxe_qp
*qp
);
145 void rxe_qp_cleanup(struct rxe_pool_entry
*arg
);
147 static inline int qp_num(struct rxe_qp
*qp
)
149 return qp
->ibqp
.qp_num
;
152 static inline enum ib_qp_type
qp_type(struct rxe_qp
*qp
)
154 return qp
->ibqp
.qp_type
;
157 static inline enum ib_qp_state
qp_state(struct rxe_qp
*qp
)
159 return qp
->attr
.qp_state
;
162 static inline int qp_mtu(struct rxe_qp
*qp
)
164 if (qp
->ibqp
.qp_type
== IB_QPT_RC
|| qp
->ibqp
.qp_type
== IB_QPT_UC
)
165 return qp
->attr
.path_mtu
;
170 static inline int rcv_wqe_size(int max_sge
)
172 return sizeof(struct rxe_recv_wqe
) +
173 max_sge
* sizeof(struct ib_sge
);
176 void free_rd_atomic_resource(struct rxe_qp
*qp
, struct resp_res
*res
);
178 static inline void rxe_advance_resp_resource(struct rxe_qp
*qp
)
181 if (unlikely(qp
->resp
.res_head
== qp
->attr
.max_dest_rd_atomic
))
182 qp
->resp
.res_head
= 0;
185 void retransmit_timer(struct timer_list
*t
);
186 void rnr_nak_timer(struct timer_list
*t
);
189 #define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT)
191 int rxe_srq_chk_attr(struct rxe_dev
*rxe
, struct rxe_srq
*srq
,
192 struct ib_srq_attr
*attr
, enum ib_srq_attr_mask mask
);
194 int rxe_srq_from_init(struct rxe_dev
*rxe
, struct rxe_srq
*srq
,
195 struct ib_srq_init_attr
*init
, struct ib_udata
*udata
,
196 struct rxe_create_srq_resp __user
*uresp
);
198 int rxe_srq_from_attr(struct rxe_dev
*rxe
, struct rxe_srq
*srq
,
199 struct ib_srq_attr
*attr
, enum ib_srq_attr_mask mask
,
200 struct rxe_modify_srq_cmd
*ucmd
, struct ib_udata
*udata
);
202 void rxe_dealloc(struct ib_device
*ib_dev
);
204 int rxe_completer(void *arg
);
205 int rxe_requester(void *arg
);
206 int rxe_responder(void *arg
);
208 u32
rxe_icrc_hdr(struct rxe_pkt_info
*pkt
, struct sk_buff
*skb
);
210 void rxe_resp_queue_pkt(struct rxe_qp
*qp
, struct sk_buff
*skb
);
212 void rxe_comp_queue_pkt(struct rxe_qp
*qp
, struct sk_buff
*skb
);
214 static inline unsigned int wr_opcode_mask(int opcode
, struct rxe_qp
*qp
)
216 return rxe_wr_opcode_info
[opcode
].mask
[qp
->ibqp
.qp_type
];
219 static inline int rxe_xmit_packet(struct rxe_qp
*qp
, struct rxe_pkt_info
*pkt
,
223 int is_request
= pkt
->mask
& RXE_REQ_MASK
;
224 struct rxe_dev
*rxe
= to_rdev(qp
->ibqp
.device
);
226 if ((is_request
&& (qp
->req
.state
!= QP_STATE_READY
)) ||
227 (!is_request
&& (qp
->resp
.state
!= QP_STATE_READY
))) {
228 pr_info("Packet dropped. QP is not in ready state\n");
232 if (pkt
->mask
& RXE_LOOPBACK_MASK
) {
233 memcpy(SKB_TO_PKT(skb
), pkt
, sizeof(*pkt
));
237 err
= rxe_send(pkt
, skb
);
242 rxe_counter_inc(rxe
, RXE_CNT_SEND_ERR
);
246 if ((qp_type(qp
) != IB_QPT_RC
) &&
247 (pkt
->mask
& RXE_END_MASK
)) {
248 pkt
->wqe
->state
= wqe_state_done
;
249 rxe_run_task(&qp
->comp
.task
, 1);
252 rxe_counter_inc(rxe
, RXE_CNT_SENT_PKTS
);
262 #endif /* RXE_LOC_H */