/**
* segment_attach can only be called after a successful call to segment_create
*/
static void *
segment_attach(map_segment_t *ds_buf, sshmem_mkey_t *mkey)
{
openib_device_t *device = &memheap_device;
static int mr_count = 0;
void *addr = NULL;
assert(ds_buf);
assert(mkey->va_base == 0);
if (MAP_SEGMENT_SHM_INVALID == (int)(mkey->u.key)) {
return (mkey->va_base);
}
/* workaround mtt problem - request aligned addresses */
++mr_count;
addr = (void *)((uintptr_t)mca_sshmem_base_start_address +
mca_sshmem_verbs_component.mr_interleave_factor * 1024ULL * 1024ULL * 1024ULL * mr_count);
{
struct ibv_mr *ib_mr = NULL;
uint64_t access_flag = IBV_ACCESS_LOCAL_WRITE |
IBV_ACCESS_REMOTE_WRITE |
IBV_ACCESS_REMOTE_READ |
IBV_EXP_ACCESS_NO_RDMA;
struct ibv_exp_reg_shared_mr_in in;
mca_sshmem_verbs_fill_shared_mr(&in, device->ib_pd, mkey->u.key, addr, access_flag);
ib_mr = ibv_exp_reg_shared_mr(&in);
if (NULL == ib_mr) {
mkey->va_base = (void *)-1;
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error to ibv_reg_shared_mr() %llu bytes errno says %d: %s",
(unsigned long long)ds_buf->seg_size, errno, strerror(errno))
);
} else {
if (ib_mr->addr != addr) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"Failed to map shared region to address %p got addr %p. Try to increase 'memheap_mr_interleave_factor' from %d",
addr, ib_mr->addr, mca_sshmem_verbs_component.mr_interleave_factor)
);
}
opal_value_array_append_item(&device->ib_mr_array, &ib_mr);
mkey->va_base = ib_mr->addr;
}
}
OPAL_OUTPUT_VERBOSE(
(70, oshmem_sshmem_base_framework.framework_output,
"%s: %s: attach successful "
"(id: %d, addr: %p size: %lu, name: %s | va_base: 0x%p len: %d key %llx)\n",
mca_sshmem_verbs_component.super.base_version.mca_type_name,
mca_sshmem_verbs_component.super.base_version.mca_component_name,
ds_buf->seg_id, ds_buf->super.va_base, (unsigned long)ds_buf->seg_size, ds_buf->seg_name,
mkey->va_base, mkey->len, (unsigned long long)mkey->u.key)
);
/* update returned base pointer with an offset that hides our stuff */
return (mkey->va_base);
}
/* ////////////////////////////////////////////////////////////////////////// */
static int
verbs_runtime_query(mca_base_module_t **module,
int *priority,
const char *hint)
{
int rc = OSHMEM_SUCCESS;
openib_device_t my_device;
openib_device_t *device = &my_device;
int num_devs = 0;
int i = 0;
*priority = 0;
*module = NULL;
memset(device, 0, sizeof(*device));
#ifdef HAVE_IBV_GET_DEVICE_LIST
device->ib_devs = ibv_get_device_list(&num_devs);
#else
#error unsupported ibv_get_device_list in infiniband/verbs.h
#endif
if (num_devs == 0 || !device->ib_devs) {
return OSHMEM_ERR_NOT_SUPPORTED;
}
/* Open device */
if (NULL != mca_sshmem_verbs_component.hca_name) {
for (i = 0; i < num_devs; i++) {
if (0 == strcmp(mca_sshmem_verbs_component.hca_name, ibv_get_device_name(device->ib_devs[i]))) {
device->ib_dev = device->ib_devs[i];
break;
}
}
} else {
device->ib_dev = device->ib_devs[0];
}
if (NULL == device->ib_dev) {
rc = OSHMEM_ERR_NOT_FOUND;
goto out;
}
if (NULL == (device->ib_dev_context = ibv_open_device(device->ib_dev))) {
rc = OSHMEM_ERR_RESOURCE_BUSY;
goto out;
}
/* Obtain device attributes */
if (ibv_query_device(device->ib_dev_context, &device->ib_dev_attr)) {
rc = OSHMEM_ERR_RESOURCE_BUSY;
goto out;
}
/* Allocate the protection domain for the device */
device->ib_pd = ibv_alloc_pd(device->ib_dev_context);
if (NULL == device->ib_pd) {
rc = OSHMEM_ERR_RESOURCE_BUSY;
goto out;
}
/* Allocate memory */
if (!rc) {
void *addr = NULL;
size_t size = getpagesize();
struct ibv_mr *ib_mr = NULL;
uint64_t access_flag = IBV_ACCESS_LOCAL_WRITE |
IBV_ACCESS_REMOTE_WRITE |
IBV_ACCESS_REMOTE_READ;
uint64_t exp_access_flag = 0;
OBJ_CONSTRUCT(&device->ib_mr_array, opal_value_array_t);
opal_value_array_init(&device->ib_mr_array, sizeof(struct ibv_mr *));
#if defined(MPAGE_ENABLE) && (MPAGE_ENABLE > 0)
exp_access_flag = IBV_EXP_ACCESS_ALLOCATE_MR |
IBV_EXP_ACCESS_SHARED_MR_USER_READ |
IBV_EXP_ACCESS_SHARED_MR_USER_WRITE;
#endif /* MPAGE_ENABLE */
struct ibv_exp_reg_mr_in in = {device->ib_pd, addr, size, access_flag|exp_access_flag, 0};
ib_mr = ibv_exp_reg_mr(&in);
if (NULL == ib_mr) {
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
} else {
device->ib_mr_shared = ib_mr;
opal_value_array_append_item(&device->ib_mr_array, &ib_mr);
}
#if defined(MPAGE_ENABLE) && (MPAGE_ENABLE > 0)
if (!rc) {
struct ibv_exp_reg_shared_mr_in in_smr;
access_flag = IBV_ACCESS_LOCAL_WRITE |
IBV_ACCESS_REMOTE_WRITE |
IBV_ACCESS_REMOTE_READ|
IBV_EXP_ACCESS_NO_RDMA;
addr = (void *)mca_sshmem_base_start_address;
mca_sshmem_verbs_fill_shared_mr(&in_smr, device->ib_pd, device->ib_mr_shared->handle, addr, access_flag);
ib_mr = ibv_exp_reg_shared_mr(&in_smr);
if (NULL == ib_mr) {
mca_sshmem_verbs_component.has_shared_mr = 0;
} else {
opal_value_array_append_item(&device->ib_mr_array, &ib_mr);
mca_sshmem_verbs_component.has_shared_mr = 1;
}
}
#endif /* MPAGE_ENABLE */
}
/* all is well - rainbows and butterflies */
if (!rc) {
*priority = mca_sshmem_verbs_component.priority;
*module = (mca_base_module_t *)&mca_sshmem_verbs_module.super;
}
out:
if (device) {
if (opal_value_array_get_size(&device->ib_mr_array)) {
struct ibv_mr** array;
struct ibv_mr* ib_mr = NULL;
array = OPAL_VALUE_ARRAY_GET_BASE(&device->ib_mr_array, struct ibv_mr *);
while (opal_value_array_get_size(&device->ib_mr_array) > 0) {
ib_mr = array[0];
ibv_dereg_mr(ib_mr);
opal_value_array_remove_item(&device->ib_mr_array, 0);
}
if (device->ib_mr_shared) {
device->ib_mr_shared = NULL;
}
OBJ_DESTRUCT(&device->ib_mr_array);
}
if (device->ib_pd) {
ibv_dealloc_pd(device->ib_pd);
device->ib_pd = NULL;
}
if(device->ib_dev_context) {
ibv_close_device(device->ib_dev_context);
device->ib_dev_context = NULL;
}
if(device->ib_devs) {
ibv_free_device_list(device->ib_devs);
device->ib_devs = NULL;
}
}
return rc;
}
/* ////////////////////////////////////////////////////////////////////////// */
static int
segment_create(map_segment_t *ds_buf,
const char *file_name,
size_t size)
{
int rc = OSHMEM_SUCCESS;
openib_device_t *device = &memheap_device;
int num_devs = 0;
int i = 0;
assert(ds_buf);
/* init the contents of map_segment_t */
shmem_ds_reset(ds_buf);
memset(device, 0, sizeof(*device));
#ifdef HAVE_IBV_GET_DEVICE_LIST
device->ib_devs = ibv_get_device_list(&num_devs);
#else
#error unsupported ibv_get_device_list in infiniband/verbs.h
#endif
if (num_devs == 0 || !device->ib_devs) {
return OSHMEM_ERR_NOT_SUPPORTED;
}
/* Open device */
if (NULL != mca_sshmem_verbs_component.hca_name) {
for (i = 0; i < num_devs; i++) {
if (0 == strcmp(mca_sshmem_verbs_component.hca_name, ibv_get_device_name(device->ib_devs[i]))) {
device->ib_dev = device->ib_devs[i];
break;
}
}
} else {
device->ib_dev = device->ib_devs[0];
}
if (NULL == device->ib_dev) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error getting device says %d: %s",
errno, strerror(errno))
);
return OSHMEM_ERR_NOT_FOUND;
}
if (NULL == (device->ib_dev_context = ibv_open_device(device->ib_dev))) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error obtaining device context for %s errno says %d: %s",
ibv_get_device_name(device->ib_dev), errno, strerror(errno))
);
return OSHMEM_ERR_RESOURCE_BUSY;
}
/* Obtain device attributes */
if (ibv_query_device(device->ib_dev_context, &device->ib_dev_attr)) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error obtaining device attributes for %s errno says %d: %s",
ibv_get_device_name(device->ib_dev), errno, strerror(errno))
);
return OSHMEM_ERR_RESOURCE_BUSY;
}
/* Allocate the protection domain for the device */
device->ib_pd = ibv_alloc_pd(device->ib_dev_context);
if (NULL == device->ib_pd) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error allocating protection domain for %s errno says %d: %s",
ibv_get_device_name(device->ib_dev), errno, strerror(errno))
);
return OSHMEM_ERR_RESOURCE_BUSY;
}
/* Allocate memory */
if (!rc) {
void *addr = NULL;
struct ibv_mr *ib_mr = NULL;
uint64_t access_flag = IBV_ACCESS_LOCAL_WRITE |
IBV_ACCESS_REMOTE_WRITE |
IBV_ACCESS_REMOTE_READ;
uint64_t exp_access_flag = 0;
OBJ_CONSTRUCT(&device->ib_mr_array, opal_value_array_t);
opal_value_array_init(&device->ib_mr_array, sizeof(struct ibv_mr *));
#if (MPAGE_ENABLE > 0)
exp_access_flag = IBV_EXP_ACCESS_ALLOCATE_MR |
IBV_EXP_ACCESS_SHARED_MR_USER_READ |
IBV_EXP_ACCESS_SHARED_MR_USER_WRITE;
#endif /* MPAGE_ENABLE */
struct ibv_exp_reg_mr_in in = {device->ib_pd, addr, size, access_flag|exp_access_flag, 0};
#if MPAGE_HAVE_IBV_EXP_REG_MR_CREATE_FLAGS
if (0 == mca_sshmem_verbs_component.has_shared_mr) {
in.addr = (void *)mca_sshmem_base_start_address;
in.comp_mask = IBV_EXP_REG_MR_CREATE_FLAGS;
in.create_flags = IBV_EXP_REG_MR_CREATE_CONTIG;
in.exp_access = access_flag;
}
#endif
ib_mr = ibv_exp_reg_mr(&in);
if (NULL == ib_mr) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error to ibv_exp_reg_mr() %llu bytes errno says %d: %s",
(unsigned long long)size, errno, strerror(errno))
);
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
} else {
device->ib_mr_shared = ib_mr;
opal_value_array_append_item(&device->ib_mr_array, &ib_mr);
}
#if (MPAGE_ENABLE > 0)
if (!rc && mca_sshmem_verbs_component.has_shared_mr) {
void *addr = NULL;
access_flag = IBV_ACCESS_LOCAL_WRITE |
IBV_ACCESS_REMOTE_WRITE |
IBV_ACCESS_REMOTE_READ|
IBV_EXP_ACCESS_NO_RDMA;
addr = (void *)mca_sshmem_base_start_address;
struct ibv_exp_reg_shared_mr_in in;
mca_sshmem_verbs_fill_shared_mr(&in, device->ib_pd, device->ib_mr_shared->handle, addr, access_flag);
ib_mr = ibv_exp_reg_shared_mr(&in);
if (NULL == ib_mr) {
OPAL_OUTPUT_VERBOSE(
(5, oshmem_sshmem_base_framework.framework_output,
"error to ibv_reg_shared_mr() %llu bytes errno says %d: %s has_shared_mr: %d",
(unsigned long long)size, errno, strerror(errno),
mca_sshmem_verbs_component.has_shared_mr
)
);
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
} else {
opal_value_array_append_item(&device->ib_mr_array, &ib_mr);
}
}
#endif /* MPAGE_ENABLE */
if (!rc) {
OPAL_OUTPUT_VERBOSE(
(70, oshmem_sshmem_base_framework.framework_output,
"ibv device %s shared_mr: %d",
ibv_get_device_name(device->ib_dev),
mca_sshmem_verbs_component.has_shared_mr)
);
if (mca_sshmem_verbs_component.has_shared_mr) {
assert(size == device->ib_mr_shared->length);
ds_buf->type = MAP_SEGMENT_ALLOC_IBV;
ds_buf->seg_id = device->ib_mr_shared->handle;
} else {
ds_buf->type = MAP_SEGMENT_ALLOC_IBV_NOSHMR;
ds_buf->seg_id = MAP_SEGMENT_SHM_INVALID;
}
ds_buf->super.va_base = ib_mr->addr;
ds_buf->seg_size = size;
ds_buf->super.va_end = (void*)((uintptr_t)ds_buf->super.va_base + ds_buf->seg_size);
}
}
OPAL_OUTPUT_VERBOSE(
(70, oshmem_sshmem_base_framework.framework_output,
"%s: %s: create %s "
"(id: %d, addr: %p size: %lu, name: %s)\n",
mca_sshmem_verbs_component.super.base_version.mca_type_name,
mca_sshmem_verbs_component.super.base_version.mca_component_name,
(rc ? "failure" : "successful"),
ds_buf->seg_id, ds_buf->super.va_base, (unsigned long)ds_buf->seg_size, ds_buf->seg_name)
);
return rc;
}
