80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
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/*
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* Copyright(c) 2016 - 2018 Intel Corporation.
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*/
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#ifndef HFI1_VERBS_TXREQ_H
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#define HFI1_VERBS_TXREQ_H
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#include <linux/types.h>
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#include <linux/slab.h>
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#include "verbs.h"
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#include "sdma_txreq.h"
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#include "iowait.h"
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struct verbs_txreq {
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struct hfi1_sdma_header phdr;
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struct sdma_txreq txreq;
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struct rvt_qp *qp;
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struct rvt_swqe *wqe;
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struct rvt_mregion *mr;
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struct rvt_sge_state *ss;
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struct sdma_engine *sde;
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struct send_context *psc;
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u16 hdr_dwords;
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u16 s_cur_size;
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};
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struct hfi1_ibdev;
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struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
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struct rvt_qp *qp);
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#define VERBS_TXREQ_GFP (GFP_ATOMIC | __GFP_NOWARN)
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static inline struct verbs_txreq *get_txreq(struct hfi1_ibdev *dev,
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struct rvt_qp *qp)
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__must_hold(&qp->slock)
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{
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struct verbs_txreq *tx;
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struct hfi1_qp_priv *priv = qp->priv;
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tx = kmem_cache_alloc(dev->verbs_txreq_cache, VERBS_TXREQ_GFP);
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if (unlikely(!tx)) {
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/* call slow path to get the lock */
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tx = __get_txreq(dev, qp);
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if (!tx)
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return tx;
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}
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tx->qp = qp;
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tx->mr = NULL;
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tx->sde = priv->s_sde;
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tx->psc = priv->s_sendcontext;
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/* so that we can test if the sdma descriptors are there */
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tx->txreq.num_desc = 0;
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/* Set the header type */
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tx->phdr.hdr.hdr_type = priv->hdr_type;
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tx->txreq.flags = 0;
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return tx;
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}
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static inline struct verbs_txreq *get_waiting_verbs_txreq(struct iowait_work *w)
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{
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struct sdma_txreq *stx;
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stx = iowait_get_txhead(w);
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if (stx)
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return container_of(stx, struct verbs_txreq, txreq);
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return NULL;
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}
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static inline bool verbs_txreq_queued(struct iowait_work *w)
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{
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return iowait_packet_queued(w);
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}
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void hfi1_put_txreq(struct verbs_txreq *tx);
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int verbs_txreq_init(struct hfi1_ibdev *dev);
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void verbs_txreq_exit(struct hfi1_ibdev *dev);
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#endif /* HFI1_VERBS_TXREQ_H */
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