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 <linux/workqueue.h>
39 #include <rdma/rdma_user_rxe.h>
42 #include "rxe_hw_counters.h"
44 static inline int pkey_match(u16 key1, u16 key2)
46 return (((key1 & 0x7fff) != 0) &&
47 ((key1 & 0x7fff) == (key2 & 0x7fff)) &&
48 ((key1 & 0x8000) || (key2 & 0x8000))) ? 1 : 0;
51 /* Return >0 if psn_a > psn_b
55 static inline int psn_compare(u32 psn_a, u32 psn_b)
59 diff = (psn_a - psn_b) << 8;
64 struct rxe_pool_entry pelem;
65 struct ib_ucontext ibuc;
70 struct rxe_pool_entry pelem;
74 struct rxe_pool_entry pelem;
83 struct ib_uverbs_wc uibwc;
88 struct rxe_pool_entry pelem;
90 struct rxe_queue *queue;
95 struct tasklet_struct comp_task;
100 wqe_state_processing,
110 spinlock_t sq_lock; /* guard queue */
111 struct rxe_queue *queue;
117 spinlock_t producer_lock; /* guard queue producer */
118 spinlock_t consumer_lock; /* guard queue consumer */
119 struct rxe_queue *queue;
123 struct rxe_pool_entry pelem;
137 QP_STATE_DRAIN, /* req only */
138 QP_STATE_DRAINED, /* req only */
142 struct rxe_req_info {
143 enum rxe_qp_state state;
153 struct rxe_task task;
156 struct rxe_comp_info {
164 struct rxe_task task;
167 enum rdatm_res_state {
168 rdatm_res_state_next,
170 rdatm_res_state_replay,
179 enum rdatm_res_state state;
196 struct rxe_resp_info {
197 enum rxe_qp_state state;
205 enum ib_wc_status status;
209 struct rxe_recv_wqe *wqe;
211 /* RDMA read / atomic only */
220 struct rxe_recv_wqe wqe;
221 struct ib_sge sge[RXE_MAX_SGE];
224 /* Responder resources. It's a circular list where the oldest
225 * resource is dropped first.
227 struct resp_res *resources;
228 unsigned int res_head;
229 unsigned int res_tail;
230 struct resp_res *res;
231 struct rxe_task task;
235 struct rxe_pool_entry pelem;
237 struct ib_qp_attr attr;
247 enum ib_sig_type sq_sig_type;
256 struct rxe_av pri_av;
257 struct rxe_av alt_av;
259 /* list of mcast groups qp has joined (for cleanup) */
260 struct list_head grp_list;
261 spinlock_t grp_lock; /* guard grp_list */
263 struct sk_buff_head req_pkts;
264 struct sk_buff_head resp_pkts;
265 struct sk_buff_head send_pkts;
267 struct rxe_req_info req;
268 struct rxe_comp_info comp;
269 struct rxe_resp_info resp;
275 /* Timer for retranmitting packet when ACKs have been lost. RC
276 * only. The requester sets it when it is not already
277 * started. The responder resets it whenever an ack is
280 struct timer_list retrans_timer;
281 u64 qp_timeout_jiffies;
283 /* Timer for handling RNR NAKS. */
284 struct timer_list rnr_nak_timer;
286 spinlock_t state_lock; /* guard requester and completer */
288 struct execute_work cleanup_work;
292 RXE_MEM_STATE_ZOMBIE,
293 RXE_MEM_STATE_INVALID,
306 #define RXE_BUF_PER_MAP (PAGE_SIZE / sizeof(struct rxe_phys_buf))
308 struct rxe_phys_buf {
314 struct rxe_phys_buf buf[RXE_BUF_PER_MAP];
318 struct rxe_pool_entry pelem;
325 struct ib_umem *umem;
330 enum rxe_mem_state state;
331 enum rxe_mem_type type;
349 struct rxe_map **map;
353 struct rxe_pool_entry pelem;
354 spinlock_t mcg_lock; /* guard group */
356 struct list_head qp_list;
364 struct rxe_pool_entry pelem;
365 struct list_head qp_list;
366 struct list_head grp_list;
368 struct rxe_mc_grp *grp;
372 struct ib_port_attr attr;
375 __be64 subnet_prefix;
376 spinlock_t port_lock; /* guard port */
377 unsigned int mtu_cap;
384 struct ib_device ib_dev;
385 struct ib_device_attr attr;
388 struct mutex usdev_lock;
390 struct net_device *ndev;
394 struct rxe_pool uc_pool;
395 struct rxe_pool pd_pool;
396 struct rxe_pool ah_pool;
397 struct rxe_pool srq_pool;
398 struct rxe_pool qp_pool;
399 struct rxe_pool cq_pool;
400 struct rxe_pool mr_pool;
401 struct rxe_pool mw_pool;
402 struct rxe_pool mc_grp_pool;
403 struct rxe_pool mc_elem_pool;
405 spinlock_t pending_lock; /* guard pending_mmaps */
406 struct list_head pending_mmaps;
408 spinlock_t mmap_offset_lock; /* guard mmap_offset */
411 atomic64_t stats_counters[RXE_NUM_OF_COUNTERS];
413 struct rxe_port port;
414 struct list_head list;
415 struct crypto_shash *tfm;
418 static inline void rxe_counter_inc(struct rxe_dev *rxe, enum rxe_counters index)
420 atomic64_inc(&rxe->stats_counters[index]);
423 static inline struct rxe_dev *to_rdev(struct ib_device *dev)
425 return dev ? container_of(dev, struct rxe_dev, ib_dev) : NULL;
428 static inline struct rxe_ucontext *to_ruc(struct ib_ucontext *uc)
430 return uc ? container_of(uc, struct rxe_ucontext, ibuc) : NULL;
433 static inline struct rxe_pd *to_rpd(struct ib_pd *pd)
435 return pd ? container_of(pd, struct rxe_pd, ibpd) : NULL;
438 static inline struct rxe_ah *to_rah(struct ib_ah *ah)
440 return ah ? container_of(ah, struct rxe_ah, ibah) : NULL;
443 static inline struct rxe_srq *to_rsrq(struct ib_srq *srq)
445 return srq ? container_of(srq, struct rxe_srq, ibsrq) : NULL;
448 static inline struct rxe_qp *to_rqp(struct ib_qp *qp)
450 return qp ? container_of(qp, struct rxe_qp, ibqp) : NULL;
453 static inline struct rxe_cq *to_rcq(struct ib_cq *cq)
455 return cq ? container_of(cq, struct rxe_cq, ibcq) : NULL;
458 static inline struct rxe_mem *to_rmr(struct ib_mr *mr)
460 return mr ? container_of(mr, struct rxe_mem, ibmr) : NULL;
463 static inline struct rxe_mem *to_rmw(struct ib_mw *mw)
465 return mw ? container_of(mw, struct rxe_mem, ibmw) : NULL;
468 int rxe_register_device(struct rxe_dev *rxe);
470 void rxe_mc_cleanup(struct rxe_pool_entry *arg);
472 #endif /* RXE_VERBS_H */