1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2/*
3 * Copyright(c) 2016 - 2018 Intel Corporation.
4 */
5
6#ifndef HFI1_VERBS_TXREQ_H
7#define HFI1_VERBS_TXREQ_H
8
9#include <linux/types.h>
10#include <linux/slab.h>
11
12#include "verbs.h"
13#include "sdma_txreq.h"
14#include "iowait.h"
15
16struct verbs_txreq {
17 struct hfi1_sdma_header phdr;
18 struct sdma_txreq txreq;
19 struct rvt_qp *qp;
20 struct rvt_swqe *wqe;
21 struct rvt_mregion *mr;
22 struct rvt_sge_state *ss;
23 struct sdma_engine *sde;
24 struct send_context *psc;
25 u16 hdr_dwords;
26 u16 s_cur_size;
27};
28
29struct hfi1_ibdev;
30struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
31 struct rvt_qp *qp);
32
33#define VERBS_TXREQ_GFP (GFP_ATOMIC | __GFP_NOWARN)
34static inline struct verbs_txreq *get_txreq(struct hfi1_ibdev *dev,
35 struct rvt_qp *qp)
36 __must_hold(&qp->slock)
37{
38 struct verbs_txreq *tx;
39 struct hfi1_qp_priv *priv = qp->priv;
40
41 tx = kmem_cache_alloc(dev->verbs_txreq_cache, VERBS_TXREQ_GFP);
42 if (unlikely(!tx)) {
43 /* call slow path to get the lock */
44 tx = __get_txreq(dev, qp);
45 if (!tx)
46 return tx;
47 }
48 tx->qp = qp;
49 tx->mr = NULL;
50 tx->sde = priv->s_sde;
51 tx->psc = priv->s_sendcontext;
52 /* so that we can test if the sdma descriptors are there */
53 tx->txreq.num_desc = 0;
54 /* Set the header type */
55 tx->phdr.hdr.hdr_type = priv->hdr_type;
56 tx->txreq.flags = 0;
57 return tx;
58}
59
60static inline struct verbs_txreq *get_waiting_verbs_txreq(struct iowait_work *w)
61{
62 struct sdma_txreq *stx;
63
64 stx = iowait_get_txhead(wait: w);
65 if (stx)
66 return container_of(stx, struct verbs_txreq, txreq);
67 return NULL;
68}
69
70static inline bool verbs_txreq_queued(struct iowait_work *w)
71{
72 return iowait_packet_queued(wait: w);
73}
74
75void hfi1_put_txreq(struct verbs_txreq *tx);
76int verbs_txreq_init(struct hfi1_ibdev *dev);
77void verbs_txreq_exit(struct hfi1_ibdev *dev);
78
79#endif /* HFI1_VERBS_TXREQ_H */
80

source code of linux/drivers/infiniband/hw/hfi1/verbs_txreq.h