mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/** Memory allocators.
|
|
*
|
|
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
|
|
* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
|
|
* @license GNU General Public License (version 3)
|
|
*
|
|
* VILLASnode
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* any later version.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************************/
|
|
|
|
#include <villas/nodes/infiniband.h>
|
|
#include <villas/memory_ib.h>
|
|
#include <rdma/rdma_cma.h>
|
|
|
|
struct ibv_mr * memory_ib_mr(void *ptr)
|
|
{
|
|
struct ibv_mr *mr = (struct ibv_mr *) ptr;
|
|
|
|
return (mr - 1);
|
|
}
|
|
|
|
void * memory_ib_alloc(struct memtype *m, size_t len, size_t alignment)
|
|
{
|
|
struct memory_ib *mi = (struct memory_ib *) m->_vd;
|
|
|
|
struct ibv_mr **mr = memory_alloc_aligned(mi->parent, len + sizeof(struct ibv_mr *), alignment);
|
|
char *ptr = (char *) (mr + 1);
|
|
|
|
*mr = ibv_reg_mr(mi->pd, ptr, len, IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE);
|
|
if(!*mr) {
|
|
free(ptr);
|
|
return NULL;
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
int memory_ib_free(struct memtype *m, void *ptr, size_t len)
|
|
{
|
|
struct memory_ib *mi = (struct memory_ib *) m->_vd;
|
|
struct ibv_mr *mr = memory_ib_mr(ptr);
|
|
|
|
ibv_dereg_mr(mr);
|
|
|
|
ptr -= sizeof(struct ibv_mr *);
|
|
len += sizeof(struct ibv_mr *);
|
|
|
|
memory_free(mi->parent, ptr, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct memtype * ib_memtype(struct node *n, struct memtype *parent)
|
|
{
|
|
struct infiniband *i = (struct infiniband *) n->_vd;
|
|
struct memtype *mt = malloc(sizeof(struct memtype));
|
|
|
|
mt->name = "ib";
|
|
mt->flags = 0;
|
|
mt->alloc = memory_ib_alloc;
|
|
mt->free = memory_ib_free;
|
|
mt->alignment = 1;
|
|
|
|
mt->_vd = malloc(sizeof(struct memory_ib));
|
|
|
|
struct memory_ib *mi = (struct memory_ib *) mt->_vd;
|
|
|
|
mi->pd = i->ctx.pd;
|
|
mi->parent = parent;
|
|
|
|
return mt;
|
|
}
|