ucs_status_t ucp_rma_put(ucp_ep_h ep, const void *buffer, size_t length,
uint64_t remote_addr, ucp_rkey_h rkey)
{
ucs_status_t status;
uct_rkey_t uct_rkey;
size_t frag_length;
if (length == 0) {
return UCS_OK;
}
if (ENABLE_PARAMS_CHECK && (buffer == NULL)) {
return UCS_ERR_INVALID_PARAM;
}
uct_rkey = UCP_RMA_RKEY_LOOKUP(ep, rkey);
/* Loop until all message has been sent.
* We re-check the configuration on every iteration, because it can be
* changed by transport switch.
*/
for (;;) {
if (length <= ep->config.max_short_put) {
status = uct_ep_put_short(ep->uct.ep, buffer, length, remote_addr,
uct_rkey);
if (ucs_likely(status != UCS_ERR_NO_RESOURCE)) {
break;
}
} else {
if (length <= ep->worker->context->config.bcopy_thresh) {
frag_length = ucs_min(length, ep->config.max_short_put);
status = uct_ep_put_short(ep->uct.ep, buffer, frag_length, remote_addr,
uct_rkey);
} else {
frag_length = ucs_min(length, ep->config.max_bcopy_put);
status = uct_ep_put_bcopy(ep->uct.ep, (uct_pack_callback_t)memcpy,
(void*)buffer, frag_length, remote_addr,
uct_rkey);
}
if (ucs_likely(status == UCS_OK)) {
length -= frag_length;
if (length == 0) {
break;
}
buffer += frag_length;
remote_addr += frag_length;
} else if (status != UCS_ERR_NO_RESOURCE) {
break;
}
}
ucp_worker_progress(ep->worker);
}
return status;
}
ucs_status_t ucp_put(ucp_ep_h ep, const void *buffer, size_t length,
uint64_t remote_addr, ucp_rkey_h rkey)
{
ucs_status_t status;
uct_rkey_t uct_rkey;
size_t frag_length;
ssize_t packed_len;
UCP_RMA_CHECK_PARAMS(buffer, length);
uct_rkey = UCP_RMA_RKEY_LOOKUP(ep, rkey);
/* Loop until all message has been sent.
* We re-check the configuration on every iteration, because it can be
* changed by transport switch.
*/
for (;;) {
if (length <= ep->config.max_short_put) {
status = uct_ep_put_short(ep->uct_ep, buffer, length, remote_addr,
uct_rkey);
if (ucs_likely(status != UCS_ERR_NO_RESOURCE)) {
break;
}
} else {
if (length <= ep->worker->context->config.bcopy_thresh) {
frag_length = ucs_min(length, ep->config.max_short_put);
status = uct_ep_put_short(ep->uct_ep, buffer, frag_length, remote_addr,
uct_rkey);
} else {
ucp_memcpy_pack_context_t pack_ctx;
pack_ctx.src = buffer;
pack_ctx.length = frag_length =
ucs_min(length, ep->config.max_bcopy_put);
packed_len = uct_ep_put_bcopy(ep->uct_ep, ucp_memcpy_pack, &pack_ctx,
remote_addr, uct_rkey);
status = (packed_len > 0) ? UCS_OK : (ucs_status_t)packed_len;
}
if (ucs_likely(status == UCS_OK)) {
length -= frag_length;
if (length == 0) {
break;
}
buffer += frag_length;
remote_addr += frag_length;
} else if (status != UCS_ERR_NO_RESOURCE) {
break;
}
}
ucp_worker_progress(ep->worker);
}
return status;
}
ucs_status_t ucp_rma_get(ucp_ep_h ep, void *buffer, size_t length,
uint64_t remote_addr, ucp_rkey_h rkey)
{
uct_completion_t comp;
ucs_status_t status;
uct_rkey_t uct_rkey;
size_t frag_length;
if (length == 0) {
return UCS_OK;
}
uct_rkey = UCP_RMA_RKEY_LOOKUP(ep, rkey);
comp.count = 1;
for (;;) {
/* Push out all fragments, and request completion only for the last
* fragment.
*/
frag_length = ucs_min(ep->config.max_bcopy_get, length);
status = uct_ep_get_bcopy(ep->uct.ep, (uct_unpack_callback_t)memcpy,
(void*)buffer, frag_length, remote_addr,
uct_rkey, &comp);
if (ucs_likely(status == UCS_OK)) {
goto posted;
} else if (status == UCS_INPROGRESS) {
++comp.count;
goto posted;
} else if (status == UCS_ERR_NO_RESOURCE) {
goto retry;
} else {
return status;
}
posted:
length -= frag_length;
if (length == 0) {
break;
}
buffer += frag_length;
remote_addr += frag_length;
retry:
ucp_worker_progress(ep->worker);
}
/* coverity[loop_condition] */
while (comp.count > 1) {
ucp_worker_progress(ep->worker);
};
return UCS_OK;
}