From: Jasvinder Singh <jasvinder.singh@intel.com>
Date: Thu, 29 Mar 2018 18:31:50 +0000 (+0100)
Subject: examples/ip_pipeline: add thread runtime
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=a8bd581de3975b5d7ad95afd227e5d889765680e;p=dpdk.git

examples/ip_pipeline: add thread runtime

Add runtime thread functions for the pipeline.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
---

diff --git a/examples/ip_pipeline/main.c b/examples/ip_pipeline/main.c
index 45f0739736..a69faceef7 100644
--- a/examples/ip_pipeline/main.c
+++ b/examples/ip_pipeline/main.c
@@ -8,6 +8,7 @@
 #include <unistd.h>
 #include <getopt.h>
 
+#include <rte_launch.h>
 #include <rte_eal.h>
 
 #include "cli.h"
@@ -237,6 +238,11 @@ main(int argc, char **argv)
 		return status;
 	}
 
+	rte_eal_mp_remote_launch(
+		thread_main,
+		NULL,
+		SKIP_MASTER);
+
 	/* Script */
 	if (app.script_name)
 		cli_script_process(app.script_name,
diff --git a/examples/ip_pipeline/thread.c b/examples/ip_pipeline/thread.c
index 2c8f84c099..805a2ae90c 100644
--- a/examples/ip_pipeline/thread.c
+++ b/examples/ip_pipeline/thread.c
@@ -154,3 +154,196 @@ thread_init(void)
 
 	return 0;
 }
+
+/**
+ * Master thread & data plane threads: message passing
+ */
+enum thread_req_type {
+	THREAD_REQ_MAX
+};
+
+struct thread_msg_req {
+	enum thread_req_type type;
+};
+
+struct thread_msg_rsp {
+	int status;
+};
+
+/**
+ * Data plane threads: message handling
+ */
+static inline struct thread_msg_req *
+thread_msg_recv(struct rte_ring *msgq_req)
+{
+	struct thread_msg_req *req;
+
+	int status = rte_ring_sc_dequeue(msgq_req, (void **) &req);
+
+	if (status != 0)
+		return NULL;
+
+	return req;
+}
+
+static inline void
+thread_msg_send(struct rte_ring *msgq_rsp,
+	struct thread_msg_rsp *rsp)
+{
+	int status;
+
+	do {
+		status = rte_ring_sp_enqueue(msgq_rsp, rsp);
+	} while (status == -ENOBUFS);
+}
+
+static void
+thread_msg_handle(struct thread_data *t)
+{
+	for ( ; ; ) {
+		struct thread_msg_req *req;
+		struct thread_msg_rsp *rsp;
+
+		req = thread_msg_recv(t->msgq_req);
+		if (req == NULL)
+			break;
+
+		switch (req->type) {
+		default:
+			rsp = (struct thread_msg_rsp *) req;
+			rsp->status = -1;
+		}
+
+		thread_msg_send(t->msgq_rsp, rsp);
+	}
+}
+
+/**
+ * Master thread & data plane threads: message passing
+ */
+
+enum pipeline_req_type {
+	PIPELINE_REQ_MAX
+};
+
+struct pipeline_msg_req {
+	enum pipeline_req_type type;
+};
+
+struct pipeline_msg_rsp {
+	int status;
+};
+
+/**
+ * Data plane threads: message handling
+ */
+static inline struct pipeline_msg_req *
+pipeline_msg_recv(struct rte_ring *msgq_req)
+{
+	struct pipeline_msg_req *req;
+
+	int status = rte_ring_sc_dequeue(msgq_req, (void **) &req);
+
+	if (status != 0)
+		return NULL;
+
+	return req;
+}
+
+static inline void
+pipeline_msg_send(struct rte_ring *msgq_rsp,
+	struct pipeline_msg_rsp *rsp)
+{
+	int status;
+
+	do {
+		status = rte_ring_sp_enqueue(msgq_rsp, rsp);
+	} while (status == -ENOBUFS);
+}
+
+static void
+pipeline_msg_handle(struct pipeline_data *p)
+{
+	for ( ; ; ) {
+		struct pipeline_msg_req *req;
+		struct pipeline_msg_rsp *rsp;
+
+		req = pipeline_msg_recv(p->msgq_req);
+		if (req == NULL)
+			break;
+
+		switch (req->type) {
+		default:
+			rsp = (struct pipeline_msg_rsp *) req;
+			rsp->status = -1;
+		}
+
+		pipeline_msg_send(p->msgq_rsp, rsp);
+	}
+}
+
+/**
+ * Data plane threads: main
+ */
+int
+thread_main(void *arg __rte_unused)
+{
+	struct thread_data *t;
+	uint32_t thread_id, i;
+
+	thread_id = rte_lcore_id();
+	t = &thread_data[thread_id];
+
+	/* Dispatch loop */
+	for (i = 0; ; i++) {
+		uint32_t j;
+
+		/* Data Plane */
+		for (j = 0; j < t->n_pipelines; j++)
+			rte_pipeline_run(t->p[j]);
+
+		/* Control Plane */
+		if ((i & 0xF) == 0) {
+			uint64_t time = rte_get_tsc_cycles();
+			uint64_t time_next_min = UINT64_MAX;
+
+			if (time < t->time_next_min)
+				continue;
+
+			/* Pipeline message queues */
+			for (j = 0; j < t->n_pipelines; j++) {
+				struct pipeline_data *p =
+					&t->pipeline_data[j];
+				uint64_t time_next = p->time_next;
+
+				if (time_next <= time) {
+					pipeline_msg_handle(p);
+					rte_pipeline_flush(p->p);
+					time_next = time + p->timer_period;
+					p->time_next = time_next;
+				}
+
+				if (time_next < time_next_min)
+					time_next_min = time_next;
+			}
+
+			/* Thread message queues */
+			{
+				uint64_t time_next = t->time_next;
+
+				if (time_next <= time) {
+					thread_msg_handle(t);
+					time_next = time + t->timer_period;
+					t->time_next = time_next;
+				}
+
+				if (time_next < time_next_min)
+					time_next_min = time_next;
+			}
+
+			t->time_next_min = time_next_min;
+		}
+	}
+
+	return 0;
+}
diff --git a/examples/ip_pipeline/thread.h b/examples/ip_pipeline/thread.h
index 39c0d8959a..47db428806 100644
--- a/examples/ip_pipeline/thread.h
+++ b/examples/ip_pipeline/thread.h
@@ -10,4 +10,7 @@
 int
 thread_init(void);
 
+int
+thread_main(void *arg);
+
 #endif /* _INCLUDE_THREAD_H_ */