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
37 #include <linux/interrupt.h>
38 #include <rdma/rdma_user_rxe.h>
42 static inline int pkey_match(u16 key1, u16 key2)
44 return (((key1 & 0x7fff) != 0) &&
45 ((key1 & 0x7fff) == (key2 & 0x7fff)) &&
46 ((key1 & 0x8000) || (key2 & 0x8000))) ? 1 : 0;
49 /* Return >0 if psn_a > psn_b
53 static inline int psn_compare(u32 psn_a, u32 psn_b)
57 diff = (psn_a - psn_b) << 8;
62 struct rxe_pool_entry pelem;
63 struct ib_ucontext ibuc;
67 struct rxe_pool_entry pelem;
72 struct rxe_pool_entry pelem;
81 struct ib_uverbs_wc uibwc;
86 struct rxe_pool_entry pelem;
88 struct rxe_queue *queue;
92 struct tasklet_struct comp_task;
107 spinlock_t sq_lock; /* guard queue */
108 struct rxe_queue *queue;
114 spinlock_t producer_lock; /* guard queue producer */
115 spinlock_t consumer_lock; /* guard queue consumer */
116 struct rxe_queue *queue;
120 struct rxe_pool_entry pelem;
134 QP_STATE_DRAIN, /* req only */
135 QP_STATE_DRAINED, /* req only */
139 extern char *rxe_qp_state_name[];
141 struct rxe_req_info {
142 enum rxe_qp_state state;
152 struct rxe_task task;
155 struct rxe_comp_info {
162 struct rxe_task task;
165 enum rdatm_res_state {
166 rdatm_res_state_next,
168 rdatm_res_state_replay,
176 enum rdatm_res_state state;
193 struct rxe_resp_info {
194 enum rxe_qp_state state;
201 enum ib_wc_status status;
205 struct rxe_recv_wqe *wqe;
207 /* RDMA read / atomic only */
217 struct rxe_recv_wqe wqe;
218 struct ib_sge sge[RXE_MAX_SGE];
221 /* Responder resources. It's a circular list where the oldest
222 * resource is dropped first.
224 struct resp_res *resources;
225 unsigned int res_head;
226 unsigned int res_tail;
227 struct resp_res *res;
228 struct rxe_task task;
232 struct rxe_pool_entry pelem;
234 struct ib_qp_attr attr;
244 enum ib_sig_type sq_sig_type;
251 struct rxe_av pri_av;
252 struct rxe_av alt_av;
254 /* list of mcast groups qp has joined (for cleanup) */
255 struct list_head grp_list;
256 spinlock_t grp_lock; /* guard grp_list */
258 struct sk_buff_head req_pkts;
259 struct sk_buff_head resp_pkts;
260 struct sk_buff_head send_pkts;
262 struct rxe_req_info req;
263 struct rxe_comp_info comp;
264 struct rxe_resp_info resp;
270 /* Timer for retranmitting packet when ACKs have been lost. RC
271 * only. The requester sets it when it is not already
272 * started. The responder resets it whenever an ack is
275 struct timer_list retrans_timer;
276 u64 qp_timeout_jiffies;
278 /* Timer for handling RNR NAKS. */
279 struct timer_list rnr_nak_timer;
281 spinlock_t state_lock; /* guard requester and completer */
285 RXE_MEM_STATE_ZOMBIE,
286 RXE_MEM_STATE_INVALID,
299 #define RXE_BUF_PER_MAP (PAGE_SIZE / sizeof(struct rxe_phys_buf))
301 struct rxe_phys_buf {
307 struct rxe_phys_buf buf[RXE_BUF_PER_MAP];
311 struct rxe_pool_entry pelem;
318 struct ib_umem *umem;
323 enum rxe_mem_state state;
324 enum rxe_mem_type type;
342 struct rxe_map **map;
346 struct rxe_pool_entry pelem;
347 spinlock_t mcg_lock; /* guard group */
349 struct list_head qp_list;
357 struct rxe_pool_entry pelem;
358 struct list_head qp_list;
359 struct list_head grp_list;
361 struct rxe_mc_grp *grp;
365 struct ib_port_attr attr;
368 __be64 subnet_prefix;
369 spinlock_t port_lock; /* guard port */
370 unsigned int mtu_cap;
377 struct ib_device ib_dev;
378 struct ib_device_attr attr;
382 struct mutex usdev_lock;
384 struct net_device *ndev;
388 struct rxe_pool uc_pool;
389 struct rxe_pool pd_pool;
390 struct rxe_pool ah_pool;
391 struct rxe_pool srq_pool;
392 struct rxe_pool qp_pool;
393 struct rxe_pool cq_pool;
394 struct rxe_pool mr_pool;
395 struct rxe_pool mw_pool;
396 struct rxe_pool mc_grp_pool;
397 struct rxe_pool mc_elem_pool;
399 spinlock_t pending_lock; /* guard pending_mmaps */
400 struct list_head pending_mmaps;
402 spinlock_t mmap_offset_lock; /* guard mmap_offset */
405 struct rxe_port port;
406 struct list_head list;
409 static inline struct rxe_dev *to_rdev(struct ib_device *dev)
411 return dev ? container_of(dev, struct rxe_dev, ib_dev) : NULL;
414 static inline struct rxe_ucontext *to_ruc(struct ib_ucontext *uc)
416 return uc ? container_of(uc, struct rxe_ucontext, ibuc) : NULL;
419 static inline struct rxe_pd *to_rpd(struct ib_pd *pd)
421 return pd ? container_of(pd, struct rxe_pd, ibpd) : NULL;
424 static inline struct rxe_ah *to_rah(struct ib_ah *ah)
426 return ah ? container_of(ah, struct rxe_ah, ibah) : NULL;
429 static inline struct rxe_srq *to_rsrq(struct ib_srq *srq)
431 return srq ? container_of(srq, struct rxe_srq, ibsrq) : NULL;
434 static inline struct rxe_qp *to_rqp(struct ib_qp *qp)
436 return qp ? container_of(qp, struct rxe_qp, ibqp) : NULL;
439 static inline struct rxe_cq *to_rcq(struct ib_cq *cq)
441 return cq ? container_of(cq, struct rxe_cq, ibcq) : NULL;
444 static inline struct rxe_mem *to_rmr(struct ib_mr *mr)
446 return mr ? container_of(mr, struct rxe_mem, ibmr) : NULL;
449 static inline struct rxe_mem *to_rmw(struct ib_mw *mw)
451 return mw ? container_of(mw, struct rxe_mem, ibmw) : NULL;
454 int rxe_register_device(struct rxe_dev *rxe);
455 int rxe_unregister_device(struct rxe_dev *rxe);
457 void rxe_mc_cleanup(void *arg);
459 #endif /* RXE_VERBS_H */