Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / infiniband / sw / rxe / rxe_loc.h
blob4ef75d5b729b6fb7e9a304ab64455d2295adae25
1 /*
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
13 * conditions are met:
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
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
31 * SOFTWARE.
34 #ifndef RXE_LOC_H
35 #define RXE_LOC_H
37 /* rxe_av.c */
39 int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr);
41 void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
42 struct rdma_ah_attr *attr);
44 void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr);
46 void rxe_av_fill_ip_info(struct rxe_av *av,
47 struct rdma_ah_attr *attr,
48 struct ib_gid_attr *sgid_attr,
49 union ib_gid *sgid);
51 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt);
53 /* rxe_cq.c */
54 int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq,
55 int cqe, int comp_vector, struct ib_udata *udata);
57 int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
58 int comp_vector, struct ib_ucontext *context,
59 struct ib_udata *udata);
61 int rxe_cq_resize_queue(struct rxe_cq *cq, int new_cqe, struct ib_udata *udata);
63 int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited);
65 void rxe_cq_disable(struct rxe_cq *cq);
67 void rxe_cq_cleanup(struct rxe_pool_entry *arg);
69 /* rxe_mcast.c */
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,
77 union ib_gid *mgid);
79 void rxe_drop_all_mcast_groups(struct rxe_qp *qp);
81 void rxe_mc_cleanup(struct rxe_pool_entry *arg);
83 /* rxe_mmap.c */
84 struct rxe_mmap_info {
85 struct list_head pending_mmaps;
86 struct ib_ucontext *context;
87 struct kref ref;
88 void *obj;
90 struct mminfo info;
93 void rxe_mmap_release(struct kref *ref);
95 struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev,
96 u32 size,
97 struct ib_ucontext *context,
98 void *obj);
100 int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
102 /* rxe_mr.c */
103 enum copy_direction {
104 to_mem_obj,
105 from_mem_obj,
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,
113 struct rxe_mem *mr);
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);
127 enum lookup_type {
128 lookup_local,
129 lookup_remote,
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(struct rxe_pool_entry *arg);
142 int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
144 /* rxe_net.c */
145 int rxe_loopback(struct sk_buff *skb);
146 int rxe_send(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
147 struct sk_buff *skb);
148 struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
149 int paylen, struct rxe_pkt_info *pkt);
150 int rxe_prepare(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
151 struct sk_buff *skb, u32 *crc);
152 enum rdma_link_layer rxe_link_layer(struct rxe_dev *rxe, unsigned int port_num);
153 const char *rxe_parent_name(struct rxe_dev *rxe, unsigned int port_num);
154 struct device *rxe_dma_device(struct rxe_dev *rxe);
155 int rxe_mcast_add(struct rxe_dev *rxe, union ib_gid *mgid);
156 int rxe_mcast_delete(struct rxe_dev *rxe, union ib_gid *mgid);
158 /* rxe_qp.c */
159 int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init);
161 int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
162 struct ib_qp_init_attr *init, struct ib_udata *udata,
163 struct ib_pd *ibpd);
165 int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init);
167 int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
168 struct ib_qp_attr *attr, int mask);
170 int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr,
171 int mask, struct ib_udata *udata);
173 int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask);
175 void rxe_qp_error(struct rxe_qp *qp);
177 void rxe_qp_destroy(struct rxe_qp *qp);
179 void rxe_qp_cleanup(struct rxe_pool_entry *arg);
181 static inline int qp_num(struct rxe_qp *qp)
183 return qp->ibqp.qp_num;
186 static inline enum ib_qp_type qp_type(struct rxe_qp *qp)
188 return qp->ibqp.qp_type;
191 static inline enum ib_qp_state qp_state(struct rxe_qp *qp)
193 return qp->attr.qp_state;
196 static inline int qp_mtu(struct rxe_qp *qp)
198 if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC)
199 return qp->attr.path_mtu;
200 else
201 return RXE_PORT_MAX_MTU;
204 static inline int rcv_wqe_size(int max_sge)
206 return sizeof(struct rxe_recv_wqe) +
207 max_sge * sizeof(struct ib_sge);
210 void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res);
212 static inline void rxe_advance_resp_resource(struct rxe_qp *qp)
214 qp->resp.res_head++;
215 if (unlikely(qp->resp.res_head == qp->attr.max_dest_rd_atomic))
216 qp->resp.res_head = 0;
219 void retransmit_timer(struct timer_list *t);
220 void rnr_nak_timer(struct timer_list *t);
222 /* rxe_srq.c */
223 #define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT)
225 int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
226 struct ib_srq_attr *attr, enum ib_srq_attr_mask mask);
228 int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq,
229 struct ib_srq_init_attr *init,
230 struct ib_ucontext *context, struct ib_udata *udata);
232 int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
233 struct ib_srq_attr *attr, enum ib_srq_attr_mask mask,
234 struct ib_udata *udata);
236 void rxe_release(struct kref *kref);
238 int rxe_completer(void *arg);
239 int rxe_requester(void *arg);
240 int rxe_responder(void *arg);
242 u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb);
244 void rxe_resp_queue_pkt(struct rxe_dev *rxe,
245 struct rxe_qp *qp, struct sk_buff *skb);
247 void rxe_comp_queue_pkt(struct rxe_dev *rxe,
248 struct rxe_qp *qp, struct sk_buff *skb);
250 static inline unsigned int wr_opcode_mask(int opcode, struct rxe_qp *qp)
252 return rxe_wr_opcode_info[opcode].mask[qp->ibqp.qp_type];
255 static inline int rxe_xmit_packet(struct rxe_dev *rxe, struct rxe_qp *qp,
256 struct rxe_pkt_info *pkt, struct sk_buff *skb)
258 int err;
259 int is_request = pkt->mask & RXE_REQ_MASK;
261 if ((is_request && (qp->req.state != QP_STATE_READY)) ||
262 (!is_request && (qp->resp.state != QP_STATE_READY))) {
263 pr_info("Packet dropped. QP is not in ready state\n");
264 goto drop;
267 if (pkt->mask & RXE_LOOPBACK_MASK) {
268 memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt));
269 err = rxe_loopback(skb);
270 } else {
271 err = rxe_send(rxe, pkt, skb);
274 if (err) {
275 rxe->xmit_errors++;
276 rxe_counter_inc(rxe, RXE_CNT_SEND_ERR);
277 return err;
280 if ((qp_type(qp) != IB_QPT_RC) &&
281 (pkt->mask & RXE_END_MASK)) {
282 pkt->wqe->state = wqe_state_done;
283 rxe_run_task(&qp->comp.task, 1);
286 rxe_counter_inc(rxe, RXE_CNT_SENT_PKTS);
287 goto done;
289 drop:
290 kfree_skb(skb);
291 err = 0;
292 done:
293 return err;
296 #endif /* RXE_LOC_H */