513789ed99
Added new call: ib_create_ah_from_wc. Call will allocate an address handle given work completion information, including any received GRH. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Hal Rosenstock <halr@voltaire.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
477 lines
10 KiB
C
477 lines
10 KiB
C
/*
|
|
* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
|
|
* Copyright (c) 2004 Infinicon Corporation. All rights reserved.
|
|
* Copyright (c) 2004 Intel Corporation. All rights reserved.
|
|
* Copyright (c) 2004 Topspin Corporation. All rights reserved.
|
|
* Copyright (c) 2004 Voltaire Corporation. All rights reserved.
|
|
* Copyright (c) 2005 Cisco Systems. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* 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.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/err.h>
|
|
|
|
#include <ib_verbs.h>
|
|
#include <ib_cache.h>
|
|
|
|
/* Protection domains */
|
|
|
|
struct ib_pd *ib_alloc_pd(struct ib_device *device)
|
|
{
|
|
struct ib_pd *pd;
|
|
|
|
pd = device->alloc_pd(device, NULL, NULL);
|
|
|
|
if (!IS_ERR(pd)) {
|
|
pd->device = device;
|
|
pd->uobject = NULL;
|
|
atomic_set(&pd->usecnt, 0);
|
|
}
|
|
|
|
return pd;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_pd);
|
|
|
|
int ib_dealloc_pd(struct ib_pd *pd)
|
|
{
|
|
if (atomic_read(&pd->usecnt))
|
|
return -EBUSY;
|
|
|
|
return pd->device->dealloc_pd(pd);
|
|
}
|
|
EXPORT_SYMBOL(ib_dealloc_pd);
|
|
|
|
/* Address handles */
|
|
|
|
struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
|
|
{
|
|
struct ib_ah *ah;
|
|
|
|
ah = pd->device->create_ah(pd, ah_attr);
|
|
|
|
if (!IS_ERR(ah)) {
|
|
ah->device = pd->device;
|
|
ah->pd = pd;
|
|
ah->uobject = NULL;
|
|
atomic_inc(&pd->usecnt);
|
|
}
|
|
|
|
return ah;
|
|
}
|
|
EXPORT_SYMBOL(ib_create_ah);
|
|
|
|
struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
|
|
struct ib_grh *grh, u8 port_num)
|
|
{
|
|
struct ib_ah_attr ah_attr;
|
|
u32 flow_class;
|
|
u16 gid_index;
|
|
int ret;
|
|
|
|
memset(&ah_attr, 0, sizeof ah_attr);
|
|
ah_attr.dlid = wc->slid;
|
|
ah_attr.sl = wc->sl;
|
|
ah_attr.src_path_bits = wc->dlid_path_bits;
|
|
ah_attr.port_num = port_num;
|
|
|
|
if (wc->wc_flags & IB_WC_GRH) {
|
|
ah_attr.ah_flags = IB_AH_GRH;
|
|
ah_attr.grh.dgid = grh->dgid;
|
|
|
|
ret = ib_find_cached_gid(pd->device, &grh->sgid, &port_num,
|
|
&gid_index);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
ah_attr.grh.sgid_index = (u8) gid_index;
|
|
flow_class = be32_to_cpu(&grh->version_tclass_flow);
|
|
ah_attr.grh.flow_label = flow_class & 0xFFFFF;
|
|
ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF;
|
|
ah_attr.grh.hop_limit = grh->hop_limit;
|
|
}
|
|
|
|
return ib_create_ah(pd, &ah_attr);
|
|
}
|
|
EXPORT_SYMBOL(ib_create_ah_from_wc);
|
|
|
|
int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
|
|
{
|
|
return ah->device->modify_ah ?
|
|
ah->device->modify_ah(ah, ah_attr) :
|
|
-ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_modify_ah);
|
|
|
|
int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
|
|
{
|
|
return ah->device->query_ah ?
|
|
ah->device->query_ah(ah, ah_attr) :
|
|
-ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_query_ah);
|
|
|
|
int ib_destroy_ah(struct ib_ah *ah)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
pd = ah->pd;
|
|
ret = ah->device->destroy_ah(ah);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_ah);
|
|
|
|
/* Queue pairs */
|
|
|
|
struct ib_qp *ib_create_qp(struct ib_pd *pd,
|
|
struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
struct ib_qp *qp;
|
|
|
|
qp = pd->device->create_qp(pd, qp_init_attr, NULL);
|
|
|
|
if (!IS_ERR(qp)) {
|
|
qp->device = pd->device;
|
|
qp->pd = pd;
|
|
qp->send_cq = qp_init_attr->send_cq;
|
|
qp->recv_cq = qp_init_attr->recv_cq;
|
|
qp->srq = qp_init_attr->srq;
|
|
qp->uobject = NULL;
|
|
qp->event_handler = qp_init_attr->event_handler;
|
|
qp->qp_context = qp_init_attr->qp_context;
|
|
qp->qp_type = qp_init_attr->qp_type;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_inc(&qp_init_attr->send_cq->usecnt);
|
|
atomic_inc(&qp_init_attr->recv_cq->usecnt);
|
|
if (qp_init_attr->srq)
|
|
atomic_inc(&qp_init_attr->srq->usecnt);
|
|
}
|
|
|
|
return qp;
|
|
}
|
|
EXPORT_SYMBOL(ib_create_qp);
|
|
|
|
int ib_modify_qp(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask)
|
|
{
|
|
return qp->device->modify_qp(qp, qp_attr, qp_attr_mask);
|
|
}
|
|
EXPORT_SYMBOL(ib_modify_qp);
|
|
|
|
int ib_query_qp(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask,
|
|
struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
return qp->device->query_qp ?
|
|
qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) :
|
|
-ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_query_qp);
|
|
|
|
int ib_destroy_qp(struct ib_qp *qp)
|
|
{
|
|
struct ib_pd *pd;
|
|
struct ib_cq *scq, *rcq;
|
|
struct ib_srq *srq;
|
|
int ret;
|
|
|
|
pd = qp->pd;
|
|
scq = qp->send_cq;
|
|
rcq = qp->recv_cq;
|
|
srq = qp->srq;
|
|
|
|
ret = qp->device->destroy_qp(qp);
|
|
if (!ret) {
|
|
atomic_dec(&pd->usecnt);
|
|
atomic_dec(&scq->usecnt);
|
|
atomic_dec(&rcq->usecnt);
|
|
if (srq)
|
|
atomic_dec(&srq->usecnt);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_qp);
|
|
|
|
/* Completion queues */
|
|
|
|
struct ib_cq *ib_create_cq(struct ib_device *device,
|
|
ib_comp_handler comp_handler,
|
|
void (*event_handler)(struct ib_event *, void *),
|
|
void *cq_context, int cqe)
|
|
{
|
|
struct ib_cq *cq;
|
|
|
|
cq = device->create_cq(device, cqe, NULL, NULL);
|
|
|
|
if (!IS_ERR(cq)) {
|
|
cq->device = device;
|
|
cq->uobject = NULL;
|
|
cq->comp_handler = comp_handler;
|
|
cq->event_handler = event_handler;
|
|
cq->cq_context = cq_context;
|
|
atomic_set(&cq->usecnt, 0);
|
|
}
|
|
|
|
return cq;
|
|
}
|
|
EXPORT_SYMBOL(ib_create_cq);
|
|
|
|
int ib_destroy_cq(struct ib_cq *cq)
|
|
{
|
|
if (atomic_read(&cq->usecnt))
|
|
return -EBUSY;
|
|
|
|
return cq->device->destroy_cq(cq);
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_cq);
|
|
|
|
int ib_resize_cq(struct ib_cq *cq,
|
|
int cqe)
|
|
{
|
|
int ret;
|
|
|
|
if (!cq->device->resize_cq)
|
|
return -ENOSYS;
|
|
|
|
ret = cq->device->resize_cq(cq, &cqe);
|
|
if (!ret)
|
|
cq->cqe = cqe;
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_resize_cq);
|
|
|
|
/* Memory regions */
|
|
|
|
struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
|
|
{
|
|
struct ib_mr *mr;
|
|
|
|
mr = pd->device->get_dma_mr(pd, mr_access_flags);
|
|
|
|
if (!IS_ERR(mr)) {
|
|
mr->device = pd->device;
|
|
mr->pd = pd;
|
|
mr->uobject = NULL;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&mr->usecnt, 0);
|
|
}
|
|
|
|
return mr;
|
|
}
|
|
EXPORT_SYMBOL(ib_get_dma_mr);
|
|
|
|
struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
|
|
struct ib_phys_buf *phys_buf_array,
|
|
int num_phys_buf,
|
|
int mr_access_flags,
|
|
u64 *iova_start)
|
|
{
|
|
struct ib_mr *mr;
|
|
|
|
mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
|
|
mr_access_flags, iova_start);
|
|
|
|
if (!IS_ERR(mr)) {
|
|
mr->device = pd->device;
|
|
mr->pd = pd;
|
|
mr->uobject = NULL;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&mr->usecnt, 0);
|
|
}
|
|
|
|
return mr;
|
|
}
|
|
EXPORT_SYMBOL(ib_reg_phys_mr);
|
|
|
|
int ib_rereg_phys_mr(struct ib_mr *mr,
|
|
int mr_rereg_mask,
|
|
struct ib_pd *pd,
|
|
struct ib_phys_buf *phys_buf_array,
|
|
int num_phys_buf,
|
|
int mr_access_flags,
|
|
u64 *iova_start)
|
|
{
|
|
struct ib_pd *old_pd;
|
|
int ret;
|
|
|
|
if (!mr->device->rereg_phys_mr)
|
|
return -ENOSYS;
|
|
|
|
if (atomic_read(&mr->usecnt))
|
|
return -EBUSY;
|
|
|
|
old_pd = mr->pd;
|
|
|
|
ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
|
|
phys_buf_array, num_phys_buf,
|
|
mr_access_flags, iova_start);
|
|
|
|
if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
|
|
atomic_dec(&old_pd->usecnt);
|
|
atomic_inc(&pd->usecnt);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_rereg_phys_mr);
|
|
|
|
int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
|
|
{
|
|
return mr->device->query_mr ?
|
|
mr->device->query_mr(mr, mr_attr) : -ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_query_mr);
|
|
|
|
int ib_dereg_mr(struct ib_mr *mr)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
if (atomic_read(&mr->usecnt))
|
|
return -EBUSY;
|
|
|
|
pd = mr->pd;
|
|
ret = mr->device->dereg_mr(mr);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_dereg_mr);
|
|
|
|
/* Memory windows */
|
|
|
|
struct ib_mw *ib_alloc_mw(struct ib_pd *pd)
|
|
{
|
|
struct ib_mw *mw;
|
|
|
|
if (!pd->device->alloc_mw)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
mw = pd->device->alloc_mw(pd);
|
|
if (!IS_ERR(mw)) {
|
|
mw->device = pd->device;
|
|
mw->pd = pd;
|
|
mw->uobject = NULL;
|
|
atomic_inc(&pd->usecnt);
|
|
}
|
|
|
|
return mw;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_mw);
|
|
|
|
int ib_dealloc_mw(struct ib_mw *mw)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
pd = mw->pd;
|
|
ret = mw->device->dealloc_mw(mw);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_dealloc_mw);
|
|
|
|
/* "Fast" memory regions */
|
|
|
|
struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
|
|
int mr_access_flags,
|
|
struct ib_fmr_attr *fmr_attr)
|
|
{
|
|
struct ib_fmr *fmr;
|
|
|
|
if (!pd->device->alloc_fmr)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
|
|
if (!IS_ERR(fmr)) {
|
|
fmr->device = pd->device;
|
|
fmr->pd = pd;
|
|
atomic_inc(&pd->usecnt);
|
|
}
|
|
|
|
return fmr;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_fmr);
|
|
|
|
int ib_unmap_fmr(struct list_head *fmr_list)
|
|
{
|
|
struct ib_fmr *fmr;
|
|
|
|
if (list_empty(fmr_list))
|
|
return 0;
|
|
|
|
fmr = list_entry(fmr_list->next, struct ib_fmr, list);
|
|
return fmr->device->unmap_fmr(fmr_list);
|
|
}
|
|
EXPORT_SYMBOL(ib_unmap_fmr);
|
|
|
|
int ib_dealloc_fmr(struct ib_fmr *fmr)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
pd = fmr->pd;
|
|
ret = fmr->device->dealloc_fmr(fmr);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_dealloc_fmr);
|
|
|
|
/* Multicast groups */
|
|
|
|
int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
|
|
{
|
|
return qp->device->attach_mcast ?
|
|
qp->device->attach_mcast(qp, gid, lid) :
|
|
-ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_attach_mcast);
|
|
|
|
int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
|
|
{
|
|
return qp->device->detach_mcast ?
|
|
qp->device->detach_mcast(qp, gid, lid) :
|
|
-ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_detach_mcast);
|