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staging/rdma/hfi1: move txreq header code

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The patch separates the txreq defines into new files, one for
verbs and one for sdma.

The verbs_txreq implementation handles the setup and teardown
of the txreq cache, so the register routine is changed to call
the new init/exit routines.

This patch allows for followup patches enhance the send engine.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mike Marciniszyn 2016-02-14 12:44:34 -08:00 • committed by Doug Ledford
parent d2421a82f6
commit 45842abbb2
8 changed files with 384 additions and 188 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/staging/rdma/hfi1/Makefile
View file

@ -11,7 +11,8 @@ hfi1-y := affinity.o chip.o device.o diag.o driver.o efivar.o \
eprom.o file_ops.o firmware.o \ eprom.o file_ops.o firmware.o \
init.o intr.o mad.o pcie.o pio.o pio_copy.o platform.o \ init.o intr.o mad.o pcie.o pio.o pio_copy.o platform.o \
qp.o qsfp.o rc.o ruc.o sdma.o sysfs.o trace.o twsi.o \ qp.o qsfp.o rc.o ruc.o sdma.o sysfs.o trace.o twsi.o \
uc.o ud.o user_exp_rcv.o user_pages.o user_sdma.o verbs.o uc.o ud.o user_exp_rcv.o user_pages.o user_sdma.o verbs.o \
verbs_txreq.o
hfi1-$(CONFIG_DEBUG_FS) += debugfs.o hfi1-$(CONFIG_DEBUG_FS) += debugfs.o
CFLAGS_trace.o = -I$(src) CFLAGS_trace.o = -I$(src)

2
drivers/staging/rdma/hfi1/qp.c
View file

@ -60,7 +60,7 @@
#include "hfi.h" #include "hfi.h"
#include "qp.h" #include "qp.h"
#include "trace.h" #include "trace.h"
#include "sdma.h" #include "verbs_txreq.h"
unsigned int hfi1_qp_table_size = 256; unsigned int hfi1_qp_table_size = 256;
module_param_named(qp_table_size, hfi1_qp_table_size, uint, S_IRUGO); module_param_named(qp_table_size, hfi1_qp_table_size, uint, S_IRUGO);

2
drivers/staging/rdma/hfi1/ruc.c
View file

@ -53,7 +53,7 @@
#include "hfi.h" #include "hfi.h"
#include "mad.h" #include "mad.h"
#include "qp.h" #include "qp.h"
#include "sdma.h" #include "verbs_txreq.h"
/* /*
* Convert the AETH RNR timeout code into the number of microseconds. * Convert the AETH RNR timeout code into the number of microseconds.

80
drivers/staging/rdma/hfi1/sdma.h
View file

@ -58,9 +58,8 @@
#include "hfi.h" #include "hfi.h"
#include "verbs.h" #include "verbs.h"
#include "sdma_txreq.h"
/* increased for AHG */
#define NUM_DESC 6
/* Hardware limit */ /* Hardware limit */
#define MAX_DESC 64 #define MAX_DESC 64
/* Hardware limit for SDMA packet size */ /* Hardware limit for SDMA packet size */
@ -311,83 +310,6 @@ struct hw_sdma_desc {
__le64 qw[2]; __le64 qw[2];
}; };
/*
* struct sdma_desc - canonical fragment descriptor
*
* This is the descriptor carried in the tx request
* corresponding to each fragment.
*
*/
struct sdma_desc {
/* private: don't use directly */
u64 qw[2];
};
struct sdma_txreq;
typedef void (*callback_t)(struct sdma_txreq *, int, int);
/**
* struct sdma_txreq - the sdma_txreq structure (one per packet)
* @list: for use by user and by queuing for wait
*
* This is the representation of a packet which consists of some
* number of fragments. Storage is provided to within the structure.
* for all fragments.
*
* The storage for the descriptors are automatically extended as needed
* when the currently allocation is exceeded.
*
* The user (Verbs or PSM) may overload this structure with fields
* specific to their use by putting this struct first in their struct.
* The method of allocation of the overloaded structure is user dependent
*
* The list is the only public field in the structure.
*
*/
struct sdma_txreq {
struct list_head list;
/* private: */
struct sdma_desc *descp;
/* private: */
void *coalesce_buf;
/* private: */
u16 coalesce_idx;
/* private: */
struct iowait *wait;
/* private: */
callback_t complete;
#ifdef CONFIG_HFI1_DEBUG_SDMA_ORDER
u64 sn;
#endif
/* private: - used in coalesce/pad processing */
u16 packet_len;
/* private: - down-counted to trigger last */
u16 tlen;
/* private: flags */
u16 flags;
/* private: */
u16 num_desc;
/* private: */
u16 desc_limit;
/* private: */
u16 next_descq_idx;
/* private: */
struct sdma_desc descs[NUM_DESC];
};
struct verbs_txreq {
struct hfi1_pio_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;
u16 hdr_dwords;
u16 hdr_inx;
};
/** /**
* struct sdma_engine - Data pertaining to each SDMA engine. * struct sdma_engine - Data pertaining to each SDMA engine.
* @dd: a back-pointer to the device data * @dd: a back-pointer to the device data

130
drivers/staging/rdma/hfi1/sdma_txreq.h Normal file
View file

@ -0,0 +1,130 @@
/*
* Copyright(c) 2016 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* BSD LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef HFI1_SDMA_TXREQ_H
#define HFI1_SDMA_TXREQ_H
/* increased for AHG */
#define NUM_DESC 6
/*
* struct sdma_desc - canonical fragment descriptor
*
* This is the descriptor carried in the tx request
* corresponding to each fragment.
*
*/
struct sdma_desc {
/* private: don't use directly */
u64 qw[2];
};
/**
* struct sdma_txreq - the sdma_txreq structure (one per packet)
* @list: for use by user and by queuing for wait
*
* This is the representation of a packet which consists of some
* number of fragments. Storage is provided to within the structure.
* for all fragments.
*
* The storage for the descriptors are automatically extended as needed
* when the currently allocation is exceeded.
*
* The user (Verbs or PSM) may overload this structure with fields
* specific to their use by putting this struct first in their struct.
* The method of allocation of the overloaded structure is user dependent
*
* The list is the only public field in the structure.
*
*/
#define SDMA_TXREQ_S_OK 0
#define SDMA_TXREQ_S_SENDERROR 1
#define SDMA_TXREQ_S_ABORTED 2
#define SDMA_TXREQ_S_SHUTDOWN 3
/* flags bits */
#define SDMA_TXREQ_F_URGENT 0x0001
#define SDMA_TXREQ_F_AHG_COPY 0x0002
#define SDMA_TXREQ_F_USE_AHG 0x0004
struct sdma_txreq;
typedef void (*callback_t)(struct sdma_txreq *, int, int);
struct iowait;
struct sdma_txreq {
struct list_head list;
/* private: */
struct sdma_desc *descp;
/* private: */
void *coalesce_buf;
/* private: */
struct iowait *wait;
/* private: */
callback_t complete;
#ifdef CONFIG_HFI1_DEBUG_SDMA_ORDER
u64 sn;
#endif
/* private: - used in coalesce/pad processing */
u16 packet_len;
/* private: - down-counted to trigger last */
u16 tlen;
/* private: */
u16 num_desc;
/* private: */
u16 desc_limit;
/* private: */
u16 next_descq_idx;
/* private: */
u16 coalesce_idx;
/* private: flags */
u16 flags;
/* private: */
struct sdma_desc descs[NUM_DESC];
};
#endif /* HFI1_SDMA_TXREQ_H */

111
drivers/staging/rdma/hfi1/verbs.c
View file

@ -63,7 +63,7 @@
#include "device.h" #include "device.h"
#include "trace.h" #include "trace.h"
#include "qp.h" #include "qp.h"
#include "sdma.h" #include "verbs_txreq.h"
static unsigned int hfi1_lkey_table_size = 16; static unsigned int hfi1_lkey_table_size = 16;
module_param_named(lkey_table_size, hfi1_lkey_table_size, uint, module_param_named(lkey_table_size, hfi1_lkey_table_size, uint,
@ -508,89 +508,6 @@ void update_sge(struct rvt_sge_state *ss, u32 length)
} }
} }
static noinline struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
struct verbs_txreq *tx;
unsigned long flags;
tx = kmem_cache_alloc(dev->verbs_txreq_cache, GFP_ATOMIC);
if (!tx) {
spin_lock_irqsave(&qp->s_lock, flags);
write_seqlock(&dev->iowait_lock);
if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK &&
list_empty(&priv->s_iowait.list)) {
dev->n_txwait++;
qp->s_flags |= RVT_S_WAIT_TX;
list_add_tail(&priv->s_iowait.list, &dev->txwait);
trace_hfi1_qpsleep(qp, RVT_S_WAIT_TX);
atomic_inc(&qp->refcount);
}
qp->s_flags &= ~RVT_S_BUSY;
write_sequnlock(&dev->iowait_lock);
spin_unlock_irqrestore(&qp->s_lock, flags);
tx = ERR_PTR(-EBUSY);
}
return tx;
}
static inline struct verbs_txreq *get_txreq(struct hfi1_ibdev *dev,
struct rvt_qp *qp)
{
struct verbs_txreq *tx;
tx = kmem_cache_alloc(dev->verbs_txreq_cache, GFP_ATOMIC);
if (!tx) {
/* call slow path to get the lock */
tx = __get_txreq(dev, qp);
if (IS_ERR(tx))
return tx;
}
tx->qp = qp;
return tx;
}
void hfi1_put_txreq(struct verbs_txreq *tx)
{
struct hfi1_ibdev *dev;
struct rvt_qp *qp;
unsigned long flags;
unsigned int seq;
struct hfi1_qp_priv *priv;
qp = tx->qp;
dev = to_idev(qp->ibqp.device);
if (tx->mr) {
rvt_put_mr(tx->mr);
tx->mr = NULL;
}
sdma_txclean(dd_from_dev(dev), &tx->txreq);
/* Free verbs_txreq and return to slab cache */
kmem_cache_free(dev->verbs_txreq_cache, tx);
do {
seq = read_seqbegin(&dev->iowait_lock);
if (!list_empty(&dev->txwait)) {
struct iowait *wait;
write_seqlock_irqsave(&dev->iowait_lock, flags);
/* Wake up first QP wanting a free struct */
wait = list_first_entry(&dev->txwait, struct iowait,
list);
qp = iowait_to_qp(wait);
priv = qp->priv;
list_del_init(&priv->s_iowait.list);
/* refcount held until actual wake up */
write_sequnlock_irqrestore(&dev->iowait_lock, flags);
hfi1_qp_wakeup(qp, RVT_S_WAIT_TX);
break;
}
} while (read_seqretry(&dev->iowait_lock, seq));
}
/* /*
* This is called with progress side lock held. * This is called with progress side lock held.
*/ */
@ -1427,13 +1344,6 @@ static void init_ibport(struct hfi1_pportdata *ppd)
RCU_INIT_POINTER(ibp->rvp.qp[1], NULL); RCU_INIT_POINTER(ibp->rvp.qp[1], NULL);
} }
static void verbs_txreq_kmem_cache_ctor(void *obj)
{
struct verbs_txreq *tx = obj;
memset(tx, 0, sizeof(*tx));
}
/** /**
* hfi1_register_ib_device - register our device with the infiniband core * hfi1_register_ib_device - register our device with the infiniband core
* @dd: the device data structure * @dd: the device data structure
@ -1447,8 +1357,6 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
unsigned i; unsigned i;
int ret; int ret;
size_t lcpysz = IB_DEVICE_NAME_MAX; size_t lcpysz = IB_DEVICE_NAME_MAX;
u16 descq_cnt;
char buf[TXREQ_NAME_LEN];
for (i = 0; i < dd->num_pports; i++) for (i = 0; i < dd->num_pports; i++)
init_ibport(ppd + i); init_ibport(ppd + i);
@ -1461,18 +1369,9 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
INIT_LIST_HEAD(&dev->txwait); INIT_LIST_HEAD(&dev->txwait);
INIT_LIST_HEAD(&dev->memwait); INIT_LIST_HEAD(&dev->memwait);
descq_cnt = sdma_get_descq_cnt(); ret = verbs_txreq_init(dev);
if (ret)
snprintf(buf, sizeof(buf), "hfi1_%u_vtxreq_cache", dd->unit);
/* SLAB_HWCACHE_ALIGN for AHG */
dev->verbs_txreq_cache = kmem_cache_create(buf,
sizeof(struct verbs_txreq),
0, SLAB_HWCACHE_ALIGN,
verbs_txreq_kmem_cache_ctor);
if (!dev->verbs_txreq_cache) {
ret = -ENOMEM;
goto err_verbs_txreq; goto err_verbs_txreq;
}
/* /*
* The system image GUID is supposed to be the same for all * The system image GUID is supposed to be the same for all
@ -1578,7 +1477,7 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
err_class: err_class:
rvt_unregister_device(&dd->verbs_dev.rdi); rvt_unregister_device(&dd->verbs_dev.rdi);
err_verbs_txreq: err_verbs_txreq:
kmem_cache_destroy(dev->verbs_txreq_cache); verbs_txreq_exit(dev);
dd_dev_err(dd, "cannot register verbs: %d!\n", -ret); dd_dev_err(dd, "cannot register verbs: %d!\n", -ret);
return ret; return ret;
} }
@ -1597,7 +1496,7 @@ void hfi1_unregister_ib_device(struct hfi1_devdata *dd)
dd_dev_err(dd, "memwait list not empty!\n"); dd_dev_err(dd, "memwait list not empty!\n");
del_timer_sync(&dev->mem_timer); del_timer_sync(&dev->mem_timer);
kmem_cache_destroy(dev->verbs_txreq_cache); verbs_txreq_exit(dev);
} }
void hfi1_cnp_rcv(struct hfi1_packet *packet) void hfi1_cnp_rcv(struct hfi1_packet *packet)

149
drivers/staging/rdma/hfi1/verbs_txreq.c Normal file
View file

@ -0,0 +1,149 @@
/*
* Copyright(c) 2016 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* BSD LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "hfi.h"
#include "verbs_txreq.h"
#include "qp.h"
#include "trace.h"
#define TXREQ_LEN 24
void hfi1_put_txreq(struct verbs_txreq *tx)
{
struct hfi1_ibdev *dev;
struct rvt_qp *qp;
unsigned long flags;
unsigned int seq;
struct hfi1_qp_priv *priv;
qp = tx->qp;
dev = to_idev(qp->ibqp.device);
if (tx->mr)
rvt_put_mr(tx->mr);
sdma_txclean(dd_from_dev(dev), &tx->txreq);
/* Free verbs_txreq and return to slab cache */
kmem_cache_free(dev->verbs_txreq_cache, tx);
do {
seq = read_seqbegin(&dev->iowait_lock);
if (!list_empty(&dev->txwait)) {
struct iowait *wait;
write_seqlock_irqsave(&dev->iowait_lock, flags);
wait = list_first_entry(&dev->txwait, struct iowait,
list);
qp = iowait_to_qp(wait);
priv = qp->priv;
list_del_init(&priv->s_iowait.list);
/* refcount held until actual wake up */
write_sequnlock_irqrestore(&dev->iowait_lock, flags);
hfi1_qp_wakeup(qp, RVT_S_WAIT_TX);
break;
}
} while (read_seqretry(&dev->iowait_lock, seq));
}
struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
struct rvt_qp *qp)
{
struct verbs_txreq *tx = ERR_PTR(-EBUSY);
unsigned long flags;
spin_lock_irqsave(&qp->s_lock, flags);
write_seqlock(&dev->iowait_lock);
if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) {
struct hfi1_qp_priv *priv;
tx = kmem_cache_alloc(dev->verbs_txreq_cache, GFP_ATOMIC);
if (tx)
goto out;
priv = qp->priv;
if (list_empty(&priv->s_iowait.list)) {
dev->n_txwait++;
qp->s_flags |= RVT_S_WAIT_TX;
list_add_tail(&priv->s_iowait.list, &dev->txwait);
trace_hfi1_qpsleep(qp, RVT_S_WAIT_TX);
atomic_inc(&qp->refcount);
}
qp->s_flags &= ~RVT_S_BUSY;
}
out:
write_sequnlock(&dev->iowait_lock);
spin_unlock_irqrestore(&qp->s_lock, flags);
return tx;
}
static void verbs_txreq_kmem_cache_ctor(void *obj)
{
struct verbs_txreq *tx = (struct verbs_txreq *)obj;
memset(tx, 0, sizeof(*tx));
}
int verbs_txreq_init(struct hfi1_ibdev *dev)
{
char buf[TXREQ_LEN];
struct hfi1_devdata *dd = dd_from_dev(dev);
snprintf(buf, sizeof(buf), "hfi1_%u_vtxreq_cache", dd->unit);
dev->verbs_txreq_cache = kmem_cache_create(buf,
sizeof(struct verbs_txreq),
0, SLAB_HWCACHE_ALIGN,
verbs_txreq_kmem_cache_ctor);
if (!dev->verbs_txreq_cache)
return -ENOMEM;
return 0;
}
void verbs_txreq_exit(struct hfi1_ibdev *dev)
{
kmem_cache_destroy(dev->verbs_txreq_cache);
dev->verbs_txreq_cache = NULL;
}

95
drivers/staging/rdma/hfi1/verbs_txreq.h Normal file
View file

@ -0,0 +1,95 @@
/*
* Copyright(c) 2016 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* BSD LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#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_pio_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;
};
struct hfi1_ibdev;
struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev,
struct rvt_qp *qp);
static inline struct verbs_txreq *get_txreq(struct hfi1_ibdev *dev,
struct rvt_qp *qp)
{
struct verbs_txreq *tx;
tx = kmem_cache_alloc(dev->verbs_txreq_cache, GFP_ATOMIC);
if (unlikely(!tx)) {
/* call slow path to get the lock */
tx = __get_txreq(dev, qp);
if (IS_ERR(tx))
return tx;
}
tx->qp = qp;
tx->mr = NULL;
return tx;
}
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 */