doc: whitespace changes in licenses

[dpdk.git] / examples / dpdk_qat / main.c

diff --git a/examples/dpdk_qat/main.c b/examples/dpdk_qat/main.c
index ae8438b..43b48a5 100644 (file)
--- a/examples/dpdk_qat/main.c
+++ b/examples/dpdk_qat/main.c
@@ -4,32 +4,31 @@
  *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
  *   All rights reserved.
  * 
- *   Redistribution and use in source and binary forms, with or without 
- *   modification, are permitted provided that the following conditions 
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
  *   are met:
  * 
- *     * Redistributions of source code must retain the above copyright 
+ *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright 
- *       notice, this list of conditions and the following disclaimer in 
- *       the documentation and/or other materials provided with the 
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
  *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its 
- *       contributors may be used to endorse or promote products derived 
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
  * 
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * 
  */
 
 #include <stdio.h>
@@ -119,6 +118,9 @@ static struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
 static unsigned enabled_port_mask = 0;
 static int promiscuous_on = 1; /**< Ports set in promiscuous mode on by default. */
 
+/* list of enabled ports */
+static uint32_t dst_ports[RTE_MAX_ETHPORTS];
+
 struct mbuf_table {
        uint16_t len;
        struct rte_mbuf *m_table[MAX_PKT_BURST];
@@ -314,13 +316,6 @@ nic_tx_send_packet(struct rte_mbuf *pkt, uint8_t port)
        qconf->tx_mbufs[port].len = len;
 }
 
-static inline uint8_t
-get_output_port(uint8_t input_port)
-{
-       RTE_BUILD_BUG_ON((RTE_MAX_ETHPORTS & 1) != 0);
-       return (uint8_t)(input_port ^ 1);
-}
-
 /* main processing loop */
 static __attribute__((noreturn)) int
 main_loop(__attribute__((unused)) void *dummy)
@@ -388,10 +383,10 @@ main_loop(__attribute__((unused)) void *dummy)
                        }
                }
 
-               port = get_output_port(pkt->pkt.in_port);
+               port = dst_ports[pkt->pkt.in_port];
 
                /* Transmit the packet */
-               nic_tx_send_packet(pkt, port);
+               nic_tx_send_packet(pkt, (uint8_t)port);
        }
 }
 
@@ -685,7 +680,8 @@ MAIN(int argc, char **argv)
        uint16_t queueid;
        unsigned lcoreid;
        uint32_t nb_tx_queue;
-       uint8_t portid, nb_rx_queue, queue, socketid;
+       uint8_t portid, nb_rx_queue, queue, socketid, last_port;
+        unsigned nb_ports_in_mask = 0;
 
        /* init EAL */
        ret = rte_eal_init(argc, argv);
@@ -730,6 +726,33 @@ MAIN(int argc, char **argv)
        if (check_port_config(nb_ports) < 0)
                rte_panic("check_port_config failed\n");
 
+        /* reset dst_ports */
+        for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
+                dst_ports[portid] = 0;
+        last_port = 0;
+
+        /*
+         * Each logical core is assigned a dedicated TX queue on each port.
+         */
+        for (portid = 0; portid < nb_ports; portid++) {
+                /* skip ports that are not enabled */
+                if ((enabled_port_mask & (1 << portid)) == 0)
+                        continue;
+
+                if (nb_ports_in_mask % 2) {
+                        dst_ports[portid] = last_port;
+                        dst_ports[last_port] = portid;
+                }
+                else
+                        last_port = portid;
+
+                nb_ports_in_mask++;
+        }
+        if (nb_ports_in_mask % 2) {
+                printf("Notice: odd number of ports in portmask.\n");
+                dst_ports[last_port] = last_port;
+        }
+
        /* initialize all ports */
        for (portid = 0; portid < nb_ports; portid++) {
                /* skip ports that are not enabled */