2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
39 int rxe_av_chk_attr(struct rxe_dev *rxe, struct ib_ah_attr *attr);
41 int rxe_av_from_attr(struct rxe_dev *rxe, u8 port_num,
42 struct rxe_av *av, struct ib_ah_attr *attr);
44 int rxe_av_to_attr(struct rxe_dev *rxe, struct rxe_av *av,
45 struct ib_ah_attr *attr);
47 int rxe_av_fill_ip_info(struct rxe_dev *rxe,
49 struct ib_ah_attr *attr,
50 struct ib_gid_attr *sgid_attr,
53 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt);
56 int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq,
57 int cqe, int comp_vector, struct ib_udata *udata);
59 int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
60 int comp_vector, struct ib_ucontext *context,
61 struct ib_udata *udata);
63 int rxe_cq_resize_queue(struct rxe_cq *cq, int new_cqe, struct ib_udata *udata);
65 int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited);
67 void rxe_cq_cleanup(void *arg);
70 int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid,
71 struct rxe_mc_grp **grp_p);
73 int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
74 struct rxe_mc_grp *grp);
76 int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
79 void rxe_drop_all_mcast_groups(struct rxe_qp *qp);
81 void rxe_mc_cleanup(void *arg);
84 struct rxe_mmap_info {
85 struct list_head pending_mmaps;
86 struct ib_ucontext *context;
93 void rxe_mmap_release(struct kref *ref);
95 struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev,
97 struct ib_ucontext *context,
100 int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
103 enum copy_direction {
108 int rxe_mem_init_dma(struct rxe_dev *rxe, struct rxe_pd *pd,
109 int access, struct rxe_mem *mem);
111 int rxe_mem_init_user(struct rxe_dev *rxe, struct rxe_pd *pd, u64 start,
112 u64 length, u64 iova, int access, struct ib_udata *udata,
115 int rxe_mem_init_fast(struct rxe_dev *rxe, struct rxe_pd *pd,
116 int max_pages, struct rxe_mem *mem);
118 int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr,
119 int length, enum copy_direction dir, u32 *crcp);
121 int copy_data(struct rxe_dev *rxe, struct rxe_pd *pd, int access,
122 struct rxe_dma_info *dma, void *addr, int length,
123 enum copy_direction dir, u32 *crcp);
125 void *iova_to_vaddr(struct rxe_mem *mem, u64 iova, int length);
132 struct rxe_mem *lookup_mem(struct rxe_pd *pd, int access, u32 key,
133 enum lookup_type type);
135 int mem_check_range(struct rxe_mem *mem, u64 iova, size_t length);
137 int rxe_mem_map_pages(struct rxe_dev *rxe, struct rxe_mem *mem,
138 u64 *page, int num_pages, u64 iova);
140 void rxe_mem_cleanup(void *arg);
142 int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
145 int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init);
147 int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
148 struct ib_qp_init_attr *init, struct ib_udata *udata,
151 int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init);
153 int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
154 struct ib_qp_attr *attr, int mask);
156 int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr,
157 int mask, struct ib_udata *udata);
159 int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask);
161 void rxe_qp_error(struct rxe_qp *qp);
163 void rxe_qp_destroy(struct rxe_qp *qp);
165 void rxe_qp_cleanup(void *arg);
167 static inline int qp_num(struct rxe_qp *qp)
169 return qp->ibqp.qp_num;
172 static inline enum ib_qp_type qp_type(struct rxe_qp *qp)
174 return qp->ibqp.qp_type;
177 static inline enum ib_qp_state qp_state(struct rxe_qp *qp)
179 return qp->attr.qp_state;
182 static inline int qp_mtu(struct rxe_qp *qp)
184 if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC)
185 return qp->attr.path_mtu;
187 return RXE_PORT_MAX_MTU;
190 static inline int rcv_wqe_size(int max_sge)
192 return sizeof(struct rxe_recv_wqe) +
193 max_sge * sizeof(struct ib_sge);
196 void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res);
198 static inline void rxe_advance_resp_resource(struct rxe_qp *qp)
201 if (unlikely(qp->resp.res_head == qp->attr.max_dest_rd_atomic))
202 qp->resp.res_head = 0;
205 void retransmit_timer(unsigned long data);
206 void rnr_nak_timer(unsigned long data);
208 void dump_qp(struct rxe_qp *qp);
211 #define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT)
213 int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
214 struct ib_srq_attr *attr, enum ib_srq_attr_mask mask);
216 int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq,
217 struct ib_srq_init_attr *init,
218 struct ib_ucontext *context, struct ib_udata *udata);
220 int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
221 struct ib_srq_attr *attr, enum ib_srq_attr_mask mask,
222 struct ib_udata *udata);
224 extern struct ib_dma_mapping_ops rxe_dma_mapping_ops;
226 void rxe_release(struct kref *kref);
228 int rxe_completer(void *arg);
229 int rxe_requester(void *arg);
230 int rxe_responder(void *arg);
232 u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb);
234 void rxe_resp_queue_pkt(struct rxe_dev *rxe,
235 struct rxe_qp *qp, struct sk_buff *skb);
237 void rxe_comp_queue_pkt(struct rxe_dev *rxe,
238 struct rxe_qp *qp, struct sk_buff *skb);
240 static inline unsigned wr_opcode_mask(int opcode, struct rxe_qp *qp)
242 return rxe_wr_opcode_info[opcode].mask[qp->ibqp.qp_type];
245 static inline int rxe_xmit_packet(struct rxe_dev *rxe, struct rxe_qp *qp,
246 struct rxe_pkt_info *pkt, struct sk_buff *skb)
249 int is_request = pkt->mask & RXE_REQ_MASK;
251 if ((is_request && (qp->req.state != QP_STATE_READY)) ||
252 (!is_request && (qp->resp.state != QP_STATE_READY))) {
253 pr_info("Packet dropped. QP is not in ready state\n");
257 if (pkt->mask & RXE_LOOPBACK_MASK) {
258 memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt));
259 err = rxe->ifc_ops->loopback(skb);
261 err = rxe->ifc_ops->send(rxe, pkt, skb);
269 if ((qp_type(qp) != IB_QPT_RC) &&
270 (pkt->mask & RXE_END_MASK)) {
271 pkt->wqe->state = wqe_state_done;
272 rxe_run_task(&qp->comp.task, 1);
284 #endif /* RXE_LOC_H */