cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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verbs_txreq.h (1914B)

      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(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(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 */