remove trailing whitespaces

[dpdk.git] / examples / ipv4_multicast / main.c

diff --git a/examples/ipv4_multicast/main.c b/examples/ipv4_multicast/main.c
index 6201978..dfa0075 100644 (file)
--- a/examples/ipv4_multicast/main.c
+++ b/examples/ipv4_multicast/main.c
@@ -1,35 +1,34 @@
 /*-
  *   BSD LICENSE
- * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ *   Copyright(c) 2010-2014 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>
@@ -113,7 +112,7 @@
 #define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
 
 #define MAX_PKT_BURST 32
-#define BURST_TX_DRAIN 200000ULL /* around 100us at 2 Ghz */
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 /* Configure how many packets ahead to prefetch, when reading packets */
 #define PREFETCH_OFFSET        3
@@ -450,9 +449,10 @@ send_timeout_burst(struct lcore_queue_conf *qconf)
 {
        uint64_t cur_tsc;
        uint8_t portid;
+       const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 
        cur_tsc = rte_rdtsc();
-       if (likely (cur_tsc < qconf->tx_tsc + BURST_TX_DRAIN))
+       if (likely (cur_tsc < qconf->tx_tsc + drain_tsc))
                return;
 
        for (portid = 0; portid < MAX_PORTS; portid++) {
@@ -463,7 +463,7 @@ send_timeout_burst(struct lcore_queue_conf *qconf)
 }
 
 /* main processing loop */
-static __attribute__((noreturn)) int
+static int
 main_loop(__rte_unused void *dummy)
 {
        struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
@@ -479,7 +479,7 @@ main_loop(__rte_unused void *dummy)
        if (qconf->n_rx_queue == 0) {
                RTE_LOG(INFO, IPv4_MULTICAST, "lcore %u has nothing to do\n",
                    lcore_id);
-               while(1);
+               return 0;
        }
 
        RTE_LOG(INFO, IPv4_MULTICAST, "entering main loop on lcore %u\n",
@@ -714,7 +714,7 @@ MAIN(int argc, char **argv)
        struct lcore_queue_conf *qconf;
        int ret;
        uint16_t queueid;
-       unsigned lcore_id = 0, rx_lcore_id = 0;;
+       unsigned lcore_id = 0, rx_lcore_id = 0;
        uint32_t n_tx_queue, nb_lcores;
        uint8_t portid;
 
@@ -753,10 +753,6 @@ MAIN(int argc, char **argv)
        if (clone_pool == NULL)
                rte_exit(EXIT_FAILURE, "Cannot init clone mbuf pool\n");
 
-       /* init driver */
-       if (rte_pmd_init_all() < 0)
-               rte_exit(EXIT_FAILURE, "Cannot init pmd\n");
-
        if (rte_eal_pci_probe() < 0)
                rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");