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