Exemplo n.º 1
0
/*
 * Send an ACK
 */
void
opal_btl_usnic_ack_send(
    opal_btl_usnic_module_t *module,
    opal_btl_usnic_endpoint_t *endpoint)
{
    opal_btl_usnic_ack_segment_t *ack;

    /* Get an ACK frag.  If we don't get one, just discard this ACK. */
    ack = opal_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(opal_btl_usnic_btl_header_t);

#if MSGDEBUG1
    {
        uint8_t mac[6];
        char src_mac[32];
        char dest_mac[32];

        memset(src_mac, 0, sizeof(src_mac));
        memset(dest_mac, 0, sizeof(dest_mac));
        opal_btl_usnic_sprintf_mac(src_mac, module->if_mac);
        opal_btl_usnic_gid_to_mac(&endpoint->endpoint_remote_addr.gid, mac);
        opal_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

    /* Do we need to check the connectivity?  If enabled, we'll check
       the connectivity at either first send to peer X or first ACK to
       peer X. */
    opal_btl_usnic_check_connectivity(module, endpoint);

    /* send the ACK */
    opal_btl_usnic_post_segment(module, endpoint, ack);

    /* Stats */
    ++module->stats.num_ack_sends;

    return;
}
Exemplo n.º 2
0
/*
 * Send an ACK
 */
void
opal_btl_usnic_ack_send(
    opal_btl_usnic_module_t *module,
    opal_btl_usnic_endpoint_t *endpoint)
{
    opal_btl_usnic_ack_segment_t *ack;

    /* Get an ACK frag.  If we don't get one, just discard this ACK. */
    ack = opal_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_len = sizeof(opal_btl_usnic_btl_header_t);

#if MSGDEBUG1
    {
        char remote_ip[IPV4STRADDRLEN];
        struct opal_btl_usnic_modex_t *modex =
            &endpoint->endpoint_remote_modex;
        opal_btl_usnic_snprintf_ipv4_addr(remote_ip, sizeof(remote_ip),
                                          modex->ipv4_addr,
                                          modex->netmask);


        opal_output(0, "--> Sending ACK, length %d, seq %" UDSEQ " to %s, port %u",
                    ack->ss_len,
                    ack->ss_base.us_btl_header->ack_seq,
                    remote_ip,
                    modex->ports[ack->ss_channel]);
    }
#endif

    /* Do we need to check the connectivity?  If enabled, we'll check
       the connectivity at either first send to peer X or first ACK to
       peer X. */
    opal_btl_usnic_check_connectivity(module, endpoint);

    /* send the ACK */
    opal_btl_usnic_post_ack(module, endpoint, ack);

    /* Stats */
    ++module->stats.num_ack_sends;

    return;
}