[dpdk-dev] [PATCH v2 21/44] ip_pipeline: add software queue object

[Jasvinder Singh]

Add swq object implementation to the application.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu at intel.com>
Signed-off-by: Jasvinder Singh <jasvinder.singh at intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz at intel.com>
---
 examples/ip_pipeline/Makefile    |  1 +
 examples/ip_pipeline/cli.c       | 55 +++++++++++++++++++++++++++++
 examples/ip_pipeline/main.c      |  8 +++++
 examples/ip_pipeline/meson.build |  1 +
 examples/ip_pipeline/swq.c       | 74 ++++++++++++++++++++++++++++++++++++++++
 examples/ip_pipeline/swq.h       | 37 ++++++++++++++++++++
 6 files changed, 176 insertions(+)
 create mode 100644 examples/ip_pipeline/swq.c
 create mode 100644 examples/ip_pipeline/swq.h

diff --git a/examples/ip_pipeline/Makefile b/examples/ip_pipeline/Makefile
index 3dab932..0dc8442 100644
--- a/examples/ip_pipeline/Makefile
+++ b/examples/ip_pipeline/Makefile
@@ -11,6 +11,7 @@ SRCS-y += link.c
 SRCS-y += main.c
 SRCS-y += mempool.c
 SRCS-y += parser.c
+SRCS-y += swq.c
 #SRCS-y += thread.c
 
 # Build using pkg-config variables if possible
diff --git a/examples/ip_pipeline/cli.c b/examples/ip_pipeline/cli.c
index 221b716..0f665eb 100644
--- a/examples/ip_pipeline/cli.c
+++ b/examples/ip_pipeline/cli.c
@@ -13,6 +13,7 @@
 #include "link.h"
 #include "mempool.h"
 #include "parser.h"
+#include "swq.h"
 
 #ifndef CMD_MAX_TOKENS
 #define CMD_MAX_TOKENS     256
@@ -227,6 +228,55 @@ cmd_link(char **tokens,
 	}
 }
 
+/**
+ * swq <swq_name>
+ *  size <size>
+ *  cpu <cpu_id>
+ */
+static void
+cmd_swq(char **tokens,
+	uint32_t n_tokens,
+	char *out,
+	size_t out_size)
+{
+	struct swq_params p;
+	char *name;
+	struct swq *swq;
+
+	if (n_tokens != 6) {
+		snprintf(out, out_size, MSG_ARG_MISMATCH, tokens[0]);
+		return;
+	}
+
+	name = tokens[1];
+
+	if (strcmp(tokens[2], "size") != 0) {
+		snprintf(out, out_size, MSG_ARG_NOT_FOUND, "size");
+		return;
+	}
+
+	if (parser_read_uint32(&p.size, tokens[3]) != 0) {
+		snprintf(out, out_size, MSG_ARG_INVALID, "size");
+		return;
+	}
+
+	if (strcmp(tokens[4], "cpu") != 0) {
+		snprintf(out, out_size, MSG_ARG_NOT_FOUND, "cpu");
+		return;
+	}
+
+	if (parser_read_uint32(&p.cpu_id, tokens[5]) != 0) {
+		snprintf(out, out_size, MSG_ARG_INVALID, "cpu_id");
+		return;
+	}
+
+	swq = swq_create(name, &p);
+	if (swq == NULL) {
+		snprintf(out, out_size, MSG_CMD_FAIL, tokens[0]);
+		return;
+	}
+}
+
 void
 cli_process(char *in, char *out, size_t out_size)
 {
@@ -256,6 +306,11 @@ cli_process(char *in, char *out, size_t out_size)
 		return;
 	}
 
+	if (strcmp(tokens[0], "swq") == 0) {
+		cmd_swq(tokens, n_tokens, out, out_size);
+		return;
+	}
+
 	snprintf(out, out_size, MSG_CMD_UNKNOWN, tokens[0]);
 }
 
diff --git a/examples/ip_pipeline/main.c b/examples/ip_pipeline/main.c
index edfb523..456f016 100644
--- a/examples/ip_pipeline/main.c
+++ b/examples/ip_pipeline/main.c
@@ -14,6 +14,7 @@
 #include "conn.h"
 #include "link.h"
 #include "mempool.h"
+#include "swq.h"
 
 static const char usage[] =
 	"%s EAL_ARGS -- [-h HOST] [-p PORT] [-s SCRIPT]\n";
@@ -175,6 +176,13 @@ main(int argc, char **argv)
 		return status;
 	}
 
+	/* SWQ */
+	status = swq_init();
+	if (status) {
+		printf("Error: SWQ initialization failed (%d)\n", status);
+		return status;
+	}
+
 	/* Script */
 	if (app.script_name)
 		cli_script_process(app.script_name,
diff --git a/examples/ip_pipeline/meson.build b/examples/ip_pipeline/meson.build
index a2f9bb6..442f3e3 100644
--- a/examples/ip_pipeline/meson.build
+++ b/examples/ip_pipeline/meson.build
@@ -14,4 +14,5 @@ sources = files(
 	'main.c',
 	'mempool.c',
 	'parser.c',
+	'swq.c',
 )
diff --git a/examples/ip_pipeline/swq.c b/examples/ip_pipeline/swq.c
new file mode 100644
index 0000000..c11bbf2
--- /dev/null
+++ b/examples/ip_pipeline/swq.c
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "swq.h"
+
+static struct swq_list swq_list;
+
+int
+swq_init(void)
+{
+	TAILQ_INIT(&swq_list);
+
+	return 0;
+}
+
+struct swq *
+swq_find(const char *name)
+{
+	struct swq *swq;
+
+	if (name == NULL)
+		return NULL;
+
+	TAILQ_FOREACH(swq, &swq_list, node)
+		if (strcmp(swq->name, name) == 0)
+			return swq;
+
+	return NULL;
+}
+
+struct swq *
+swq_create(const char *name, struct swq_params *params)
+{
+	struct swq *swq;
+	struct rte_ring *r;
+	unsigned int flags = RING_F_SP_ENQ | RING_F_SC_DEQ;
+
+	/* Check input params */
+	if ((name == NULL) ||
+		swq_find(name) ||
+		(params == NULL) ||
+		(params->size == 0))
+		return NULL;
+
+	/* Resource create */
+	r = rte_ring_create(
+		name,
+		params->size,
+		params->cpu_id,
+		flags);
+
+	if (r == NULL)
+		return NULL;
+
+	/* Node allocation */
+	swq = calloc(1, sizeof(struct swq));
+	if (swq == NULL) {
+		rte_ring_free(r);
+		return NULL;
+	}
+
+	/* Node fill in */
+	strncpy(swq->name, name, sizeof(swq->name));
+	swq->r = r;
+
+	/* Node add to list */
+	TAILQ_INSERT_TAIL(&swq_list, swq, node);
+
+	return swq;
+}
diff --git a/examples/ip_pipeline/swq.h b/examples/ip_pipeline/swq.h
new file mode 100644
index 0000000..c8440ee
--- /dev/null
+++ b/examples/ip_pipeline/swq.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#ifndef _INCLUDE_SWQ_H_
+#define _INCLUDE_SWQ_H_
+
+#include <stdint.h>
+#include <sys/queue.h>
+
+#include <rte_ring.h>
+
+#include "common.h"
+
+struct swq {
+	TAILQ_ENTRY(swq) node;
+	char name[NAME_SIZE];
+	struct rte_ring *r;
+};
+
+TAILQ_HEAD(swq_list, swq);
+
+int
+swq_init(void);
+
+struct swq *
+swq_find(const char *name);
+
+struct swq_params {
+	uint32_t size;
+	uint32_t cpu_id;
+};
+
+struct swq *
+swq_create(const char *name, struct swq_params *params);
+
+#endif /* _INCLUDE_SWQ_H_ */
-- 
2.9.3