/*
* Send an ACK
*/
void
ompi_btl_usnic_ack_send(
ompi_btl_usnic_module_t *module,
ompi_btl_usnic_endpoint_t *endpoint)
{
ompi_btl_usnic_ack_segment_t *ack;
#if MSGDEBUG1
uint8_t mac[6];
char src_mac[32];
char dest_mac[32];
#endif
/* Get an ACK frag. If we don't get one, just discard this ACK. */
ack = ompi_btl_usnic_ack_segment_alloc(module);
if (OPAL_UNLIKELY(NULL == ack)) {
opal_output(0, "====================== No frag for sending the ACK -- skipped");
abort();
}
/* send the seq of the lowest item in the window that
we've received */
ack->ss_base.us_btl_header->ack_seq =
endpoint->endpoint_next_contig_seq_to_recv - 1;
ack->ss_base.us_sg_entry[0].length =
sizeof(ompi_btl_usnic_btl_header_t);
#if MSGDEBUG1
memset(src_mac, 0, sizeof(src_mac));
memset(dest_mac, 0, sizeof(dest_mac));
ompi_btl_usnic_sprintf_mac(src_mac, module->if_mac);
ompi_btl_usnic_gid_to_mac(&endpoint->endpoint_remote_addr.gid, mac);
ompi_btl_usnic_sprintf_mac(dest_mac, mac);
opal_output(0, "--> Sending ACK, sg_entry length %d, seq %" UDSEQ " to %s, qp %u",
ack->ss_base.us_sg_entry[0].length,
ack->ss_base.us_btl_header->ack_seq, dest_mac,
endpoint->endpoint_remote_addr.qp_num[ack->ss_channel]);
#endif
/* send the ACK */
ompi_btl_usnic_post_segment(module, endpoint, ack);
/* Stats */
++module->stats.num_ack_sends;
return;
}
void ompi_btl_usnic_sprintf_gid_mac(char *out, union ibv_gid *gid)
{
uint8_t mac[6];
ompi_btl_usnic_gid_to_mac(gid, mac);
ompi_btl_usnic_sprintf_mac(out, mac);
}
