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btl/openib: queue pending fragments once only when running out of credit #369

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Jul 14, 2015
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btl/openib: queue pending fragments once only when running out of credit #369

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5 changes: 4 additions & 1 deletion opal/mca/btl/openib/btl_openib_component.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3376,12 +3376,15 @@ progress_pending_frags_wqe(mca_btl_base_endpoint_t *ep, const int qpn)
frag = opal_list_remove_first(&ep->qps[qpn].no_wqe_pending_frags[i]);
if(NULL == frag)
break;
assert(0 == frag->opal_list_item_refcount);
tmp_ep = to_com_frag(frag)->endpoint;
ret = mca_btl_openib_endpoint_post_send(tmp_ep, to_send_frag(frag));
if (OPAL_SUCCESS != ret) {
/* NTH: this handles retrying if we are out of credits but other errors are not
* handled (maybe abort?). */
opal_list_prepend (&ep->qps[qpn].no_wqe_pending_frags[i], (opal_list_item_t *) frag);
if (OPAL_ERR_RESOURCE_BUSY != ret) {
opal_list_prepend (&ep->qps[qpn].no_wqe_pending_frags[i], (opal_list_item_t *) frag);
}
break;
}
}
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