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Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / drivers / infiniband / hw / hfi1 / verbs_txreq.h
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
16 struct 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
29 struct hfi1_ibdev;
30 struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
31                                 struct rvt_qp *qp);
32
33 #define VERBS_TXREQ_GFP (GFP_ATOMIC | __GFP_NOWARN)
34 static 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
60 static inline struct verbs_txreq *get_waiting_verbs_txreq(struct iowait_work *w)
61 {
62         struct sdma_txreq *stx;
63
64         stx = iowait_get_txhead(w);
65         if (stx)
66                 return container_of(stx, struct verbs_txreq, txreq);
67         return NULL;
68 }
69
70 static inline bool verbs_txreq_queued(struct iowait_work *w)
71 {
72         return iowait_packet_queued(w);
73 }
74
75 void hfi1_put_txreq(struct verbs_txreq *tx);
76 int verbs_txreq_init(struct hfi1_ibdev *dev);
77 void verbs_txreq_exit(struct hfi1_ibdev *dev);
78
79 #endif                         /* HFI1_VERBS_TXREQ_H */
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