static int
usdf_msg_ep_enable(struct fid_ep *fep)
{
struct usdf_ep *ep;
struct usd_filter filt;
struct usd_qp_impl *uqp;
int ret;
ep = ep_ftou(fep);
filt.uf_type = USD_FTY_UDP_SOCK;
filt.uf_filter.uf_udp_sock.u_sock = ep->ep_sock;
ret = usd_create_qp(ep->ep_domain->dom_dev,
USD_QTR_UDP,
USD_QTY_NORMAL,
ep->ep_wcq->cq_cq,
ep->ep_rcq->cq_cq,
ep->ep_wqe,
ep->ep_rqe,
&filt,
&ep->ep_qp);
if (ret != 0) {
goto fail;
}
ep->ep_qp->uq_context = ep;
/*
* Allocate a memory region big enough to hold a header for each
* RQ entry
*/
uqp = to_qpi(ep->ep_qp);
ep->ep_hdr_ptr = calloc(uqp->uq_rq.urq_num_entries,
sizeof(ep->ep_hdr_ptr[0]));
if (ep->ep_hdr_ptr == NULL) {
ret = -FI_ENOMEM;
goto fail;
}
ret = usd_alloc_mr(ep->ep_domain->dom_dev,
usd_get_recv_credits(ep->ep_qp) * USDF_HDR_BUF_ENTRY,
&ep->ep_hdr_buf);
if (ret != 0) {
goto fail;
}
return 0;
fail:
if (ep->ep_hdr_ptr != NULL) {
free(ep->ep_hdr_ptr);
}
if (ep->ep_qp != NULL) {
usd_destroy_qp(ep->ep_qp);
}
return ret;
}
ssize_t usdf_dgram_rx_size_left(struct fid_ep *fep)
{
struct usdf_ep *ep;
USDF_DBG_SYS(EP_DATA, "\n");
if (fep == NULL)
return -FI_EINVAL;
ep = ep_ftou(fep);
if (ep->e.dg.ep_qp == NULL)
return -FI_EOPBADSTATE; /* EP not enabled */
return usd_get_recv_credits(ep->e.dg.ep_qp) /
(ep->e.dg.rx_iov_limit + 1);
}
ssize_t usdf_dgram_prefix_rx_size_left(struct fid_ep *fep)
{
struct usdf_ep *ep;
USDF_DBG_SYS(EP_DATA, "\n");
if (fep == NULL)
return -FI_EINVAL;
ep = ep_ftou(fep);
if (ep->e.dg.ep_qp == NULL)
return -FI_EOPBADSTATE; /* EP not enabled */
/* prefix_recvv can post up to iov_limit descriptors
*/
return (usd_get_recv_credits(ep->e.dg.ep_qp) / ep->e.dg.rx_iov_limit);
}
ssize_t usdf_dgram_rx_size_left(struct fid_ep *fep)
{
struct usdf_ep *ep;
USDF_DBG_SYS(EP_DATA, "\n");
if (fep == NULL)
return -FI_EINVAL;
ep = ep_ftou(fep);
if (ep->e.dg.ep_qp == NULL)
return -FI_EOPBADSTATE; /* EP not enabled */
/* NOTE-SIZE-LEFT: divide by constant right now, rather than keeping
* track of the rx_attr->iov_limit value we gave to the user. This
* sometimes under-reports the number of RX ops that could be posted,
* but it avoids touching a cache line that we don't otherwise need.
*
* sendv/recvv could potentially post iov_limit+1 descriptors
*/
return usd_get_recv_credits(ep->e.dg.ep_qp) / (USDF_DGRAM_DFLT_SGE + 1);
}
