[dpdk-dev] [PATCH v6 4/6] examples/ioat: add two threads configuration

Marcin Baran marcinx.baran at intel.com
Mon Sep 30 09:50:32 CEST 2019


From: Pawel Modrak <pawelx.modrak at intel.com>

Added possibility to use two lcores: first for
packet receiving and copying, second for packets
sending.

Signed-off-by: Pawel Modrak <pawelx.modrak at intel.com>
Signed-off-by: Marcin Baran <marcinx.baran at intel.com>
---
 examples/ioat/ioatfwd.c | 47 +++++++++++++++++++++++++++++++++++++----
 1 file changed, 43 insertions(+), 4 deletions(-)

diff --git a/examples/ioat/ioatfwd.c b/examples/ioat/ioatfwd.c
index a38b6700b..2fc0b1173 100644
--- a/examples/ioat/ioatfwd.c
+++ b/examples/ioat/ioatfwd.c
@@ -161,7 +161,6 @@ ioat_enqueue_packets(struct rte_mbuf **pkts,
 	rte_mempool_put_bulk(ioat_pktmbuf_pool, (void *)&pkts_copy[i],
 		nb_rx - i);
 
-
 	return ret;
 }
 
@@ -264,6 +263,36 @@ ioat_tx_port(struct rxtx_port_config *tx_config)
 	}
 }
 
+/* Main rx processing loop for IOAT rawdev. */
+static void
+rx_main_loop(void)
+{
+	uint16_t i;
+	uint16_t nb_ports = cfg.nb_ports;
+
+	RTE_LOG(INFO, IOAT, "Entering main rx loop for copy on lcore %u\n",
+		rte_lcore_id());
+
+	while (!force_quit)
+		for (i = 0; i < nb_ports; i++)
+			ioat_rx_port(&cfg.ports[i]);
+}
+
+/* Main tx processing loop for hardware copy. */
+static void
+tx_main_loop(void)
+{
+	uint16_t i;
+	uint16_t nb_ports = cfg.nb_ports;
+
+	RTE_LOG(INFO, IOAT, "Entering main tx loop for copy on lcore %u\n",
+		rte_lcore_id());
+
+	while (!force_quit)
+		for (i = 0; i < nb_ports; i++)
+			ioat_tx_port(&cfg.ports[i]);
+}
+
 /* Main rx and tx loop if only one slave lcore available */
 static void
 rxtx_main_loop(void)
@@ -288,9 +317,19 @@ static void start_forwarding_cores(void)
 	RTE_LOG(INFO, IOAT, "Entering %s on lcore %u\n",
 		__func__, rte_lcore_id());
 
-	lcore_id = rte_get_next_lcore(lcore_id, true, true);
-	rte_eal_remote_launch((lcore_function_t *)rxtx_main_loop,
-		NULL, lcore_id);
+	if (cfg.nb_lcores == 1) {
+		lcore_id = rte_get_next_lcore(lcore_id, true, true);
+		rte_eal_remote_launch((lcore_function_t *)rxtx_main_loop,
+			NULL, lcore_id);
+	} else if (cfg.nb_lcores > 1) {
+		lcore_id = rte_get_next_lcore(lcore_id, true, true);
+		rte_eal_remote_launch((lcore_function_t *)rx_main_loop,
+			NULL, lcore_id);
+
+		lcore_id = rte_get_next_lcore(lcore_id, true, true);
+		rte_eal_remote_launch((lcore_function_t *)tx_main_loop, NULL,
+			lcore_id);
+	}
 }
 
 /* Display usage */
-- 
2.22.0.windows.1



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