[dpdk-dev] [PATCH 37/39] examples/l2fwd-event: add eventmode worker

[Anoob Joseph]

Adding non-burst Tx internal-port eventmode worker.

Signed-off-by: Anoob Joseph <anoobj at marvell.com>
Signed-off-by: Lukasz Bartosik <lbartosik at marvell.com>
---
 examples/l2fwd-event/l2fwd_worker.c | 164 +++++++++++++++++++++++++++++++++++-
 1 file changed, 163 insertions(+), 1 deletion(-)

diff --git a/examples/l2fwd-event/l2fwd_worker.c b/examples/l2fwd-event/l2fwd_worker.c
index 92eae02..0a413a4 100644
--- a/examples/l2fwd-event/l2fwd_worker.c
+++ b/examples/l2fwd-event/l2fwd_worker.c
@@ -315,7 +315,7 @@ l2fwd_poll_mode_worker(void)
  */
 
 /* Workers registered */
-#define L2FWD_EVENTMODE_WORKERS		1
+#define L2FWD_EVENTMODE_WORKERS		2
 
 /*
  * Event mode worker
@@ -486,6 +486,159 @@ l2fwd_eventmode_non_burst_no_internal_port(void *args)
 		rte_free(links);
 }
 
+/*
+ * Event mode worker
+ * Operating mode : non-burst tx internal port
+ */
+static void
+l2fwd_eventmode_non_burst_tx_internal_port(void *args)
+{
+	struct rte_event ev;
+	struct rte_mbuf *pkt;
+	struct rte_eventmode_helper_conf *mode_conf;
+	struct rte_eventmode_helper_event_link_info *links = NULL;
+	unsigned int lcore_nb_link = 0;
+	uint32_t lcore_id;
+	unsigned int i, nb_rx = 0;
+	unsigned int portid;
+	struct lcore_queue_conf *qconf;
+	int is_master_core;
+	struct tsc_tracker tsc = {0};
+
+	/* Get core ID */
+	lcore_id = rte_lcore_id();
+
+	RTE_LOG(INFO, L2FWD,
+		"Launching event mode non-burst worker internal port "
+		"on lcore %d\n", lcore_id);
+
+	/* Set the flag if master core */
+	is_master_core = (lcore_id == rte_get_master_lcore()) ? 1 : 0;
+
+	/* Get qconf for this core */
+	qconf = &lcore_queue_conf[lcore_id];
+
+	/* Set drain tsc */
+	tsc.drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
+			US_PER_S * BURST_TX_DRAIN_US;
+
+	/* Mode conf will be passed as args */
+	mode_conf = (struct rte_eventmode_helper_conf *)args;
+
+	/* Get the links configured for this lcore */
+	lcore_nb_link = rte_eventmode_helper_get_event_lcore_links(lcore_id,
+			mode_conf, &links);
+
+	/* Check if we have links registered for this lcore */
+	if (lcore_nb_link == 0) {
+		/* No links registered. The core could do periodic drains */
+		l2fwd_drain_loop(qconf, &tsc, is_master_core);
+		goto clean_and_exit;
+	}
+
+	/* We have valid links */
+
+	/* Reset stats before proceeding */
+	reset_eth_stats(is_master_core);
+
+	/* See if it's single link */
+	if (lcore_nb_link == 1)
+		goto single_link_loop;
+	else
+		goto multi_link_loop;
+
+single_link_loop:
+
+	RTE_LOG(INFO, L2FWD, " -- lcoreid=%u event_port_id=%u\n", lcore_id,
+		links[0].event_portid);
+
+	while (!force_quit) {
+
+		/* Do periodic operations (buffer drain & stats monitor) */
+		l2fwd_periodic_drain_stats_monitor(qconf, &tsc, is_master_core);
+
+		/* Read packet from event queues */
+		nb_rx = rte_event_dequeue_burst(links[0].eventdev_id,
+				links[0].event_portid,
+				&ev,     /* events */
+				1,       /* nb_events */
+				0        /* timeout_ticks */);
+
+		if (nb_rx == 0)
+			continue;
+
+		portid = ev.queue_id;
+		port_statistics[portid].rx++;
+		pkt = ev.mbuf;
+
+		rte_prefetch0(rte_pktmbuf_mtod(pkt, void *));
+
+		/* Process packet */
+		l2fwd_event_pre_forward(&ev, portid);
+
+		/*
+		 * Since tx internal port is available, events can be
+		 * directly enqueued to the adapter and it would be
+		 * internally submitted to the eth device.
+		 */
+		rte_event_eth_tx_adapter_enqueue(links[0].eventdev_id,
+				links[0].event_portid,
+				&ev,	/* events */
+				1	/* nb_events */);
+	}
+	goto clean_and_exit;
+
+multi_link_loop:
+
+	for (i = 0; i < lcore_nb_link; i++) {
+		RTE_LOG(INFO, L2FWD, " -- lcoreid=%u event_port_id=%u\n",
+			lcore_id, links[i].event_portid);
+	}
+
+	while (!force_quit) {
+
+		/* Do periodic operations (buffer drain & stats monitor) */
+		l2fwd_periodic_drain_stats_monitor(qconf, &tsc, is_master_core);
+
+		for (i = 0; i < lcore_nb_link; i++) {
+			/* Read packet from event queues */
+			nb_rx = rte_event_dequeue_burst(links[i].eventdev_id,
+					links[i].event_portid,
+					&ev,     /* events */
+					1,       /* nb_events */
+					0        /* timeout_ticks */);
+
+			if (nb_rx == 0)
+				continue;
+
+			portid = ev.queue_id;
+			port_statistics[portid].rx++;
+			pkt = ev.mbuf;
+
+			rte_prefetch0(rte_pktmbuf_mtod(pkt, void *));
+
+			/* Process packet */
+			l2fwd_event_pre_forward(&ev, portid);
+
+			/*
+			 * Since tx internal port is available, events can be
+			 * directly enqueued to the adapter and it would be
+			 * internally submitted to the eth device.
+			 */
+			rte_event_eth_tx_adapter_enqueue(links[i].eventdev_id,
+					links[i].event_portid,
+					&ev,	/* events */
+					1	/* nb_events */);
+
+		}
+	}
+	goto clean_and_exit;
+
+clean_and_exit:
+	if (links != NULL)
+		rte_free(links);
+}
+
 static uint8_t
 l2fwd_eventmode_populate_wrkr_params(
 		struct rte_eventmode_helper_app_worker_params *wrkrs)
@@ -503,6 +656,15 @@ l2fwd_eventmode_populate_wrkr_params(
 	wrkr->worker_thread = l2fwd_eventmode_non_burst_no_internal_port;
 
 	nb_wrkr_param++;
+	wrkr++;
+
+	/* Non-burst tx internal port */
+	wrkr->cap.burst = RTE_EVENTMODE_HELPER_RX_TYPE_NON_BURST;
+	wrkr->cap.tx_internal_port =
+			RTE_EVENTMODE_HELPER_TX_TYPE_INTERNAL_PORT;
+	wrkr->worker_thread = l2fwd_eventmode_non_burst_tx_internal_port;
+
+	nb_wrkr_param++;
 	return nb_wrkr_param;
 }
 
-- 
2.7.4