X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=app%2Ftest%2Ftest_kni.c;fp=app%2Ftest%2Ftest_kni.c;h=7243ade100cf5c385b60f0d07f257b2c96169d86;hb=97f17497d162afdb82c8704bf097f0fee3724b2e;hp=0000000000000000000000000000000000000000;hpb=e04be89c2409570e0055b2cda60bd11395bb93b0;p=deb_dpdk.git

diff --git a/app/test/test_kni.c b/app/test/test_kni.c
new file mode 100644
index 00000000..7243ade1
--- /dev/null
+++ b/app/test/test_kni.c
@@ -0,0 +1,640 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   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
+ *   are met:
+ *
+ *     * 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
+ *       distribution.
+ *     * 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
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/wait.h>
+
+#include "test.h"
+
+#include <rte_string_fns.h>
+#include <rte_mempool.h>
+#include <rte_ethdev.h>
+#include <rte_cycles.h>
+#include <rte_kni.h>
+
+#define NB_MBUF          8192
+#define MAX_PACKET_SZ    2048
+#define MBUF_DATA_SZ     (MAX_PACKET_SZ + RTE_PKTMBUF_HEADROOM)
+#define PKT_BURST_SZ     32
+#define MEMPOOL_CACHE_SZ PKT_BURST_SZ
+#define SOCKET           0
+#define NB_RXD           128
+#define NB_TXD           512
+#define KNI_TIMEOUT_MS   5000 /* ms */
+
+#define IFCONFIG      "/sbin/ifconfig "
+#define TEST_KNI_PORT "test_kni_port"
+#define KNI_TEST_MAX_PORTS 4
+/* The threshold number of mbufs to be transmitted or received. */
+#define KNI_NUM_MBUF_THRESHOLD 100
+static int kni_pkt_mtu = 0;
+
+struct test_kni_stats {
+	volatile uint64_t ingress;
+	volatile uint64_t egress;
+};
+
+static const struct rte_eth_rxconf rx_conf = {
+	.rx_thresh = {
+		.pthresh = 8,
+		.hthresh = 8,
+		.wthresh = 4,
+	},
+	.rx_free_thresh = 0,
+};
+
+static const struct rte_eth_txconf tx_conf = {
+	.tx_thresh = {
+		.pthresh = 36,
+		.hthresh = 0,
+		.wthresh = 0,
+	},
+	.tx_free_thresh = 0,
+	.tx_rs_thresh = 0,
+};
+
+static const struct rte_eth_conf port_conf = {
+	.rxmode = {
+		.header_split = 0,
+		.hw_ip_checksum = 0,
+		.hw_vlan_filter = 0,
+		.jumbo_frame = 0,
+		.hw_strip_crc = 0,
+	},
+	.txmode = {
+		.mq_mode = ETH_DCB_NONE,
+	},
+};
+
+static struct rte_kni_ops kni_ops = {
+	.change_mtu = NULL,
+	.config_network_if = NULL,
+};
+
+static unsigned lcore_master, lcore_ingress, lcore_egress;
+static struct rte_kni *test_kni_ctx;
+static struct test_kni_stats stats;
+
+static volatile uint32_t test_kni_processing_flag;
+
+static struct rte_mempool *
+test_kni_create_mempool(void)
+{
+	struct rte_mempool * mp;
+
+	mp = rte_mempool_lookup("kni_mempool");
+	if (!mp)
+		mp = rte_pktmbuf_pool_create("kni_mempool",
+				NB_MBUF,
+				MEMPOOL_CACHE_SZ, 0, MBUF_DATA_SZ,
+				SOCKET);
+
+	return mp;
+}
+
+static struct rte_mempool *
+test_kni_lookup_mempool(void)
+{
+	return rte_mempool_lookup("kni_mempool");
+}
+/* Callback for request of changing MTU */
+static int
+kni_change_mtu(uint8_t port_id, unsigned new_mtu)
+{
+	printf("Change MTU of port %d to %u\n", port_id, new_mtu);
+	kni_pkt_mtu = new_mtu;
+	printf("Change MTU of port %d to %i successfully.\n",
+					 port_id, kni_pkt_mtu);
+	return 0;
+}
+/**
+ * This loop fully tests the basic functions of KNI. e.g. transmitting,
+ * receiving to, from kernel space, and kernel requests.
+ *
+ * This is the loop to transmit/receive mbufs to/from kernel interface with
+ * supported by KNI kernel module. The ingress lcore will allocate mbufs and
+ * transmit them to kernel space; while the egress lcore will receive the mbufs
+ * from kernel space and free them.
+ * On the master lcore, several commands will be run to check handling the
+ * kernel requests. And it will finally set the flag to exit the KNI
+ * transmitting/receiving to/from the kernel space.
+ *
+ * Note: To support this testing, the KNI kernel module needs to be insmodded
+ * in one of its loopback modes.
+ */
+static int
+test_kni_loop(__rte_unused void *arg)
+{
+	int ret = 0;
+	unsigned nb_rx, nb_tx, num, i;
+	const unsigned lcore_id = rte_lcore_id();
+	struct rte_mbuf *pkts_burst[PKT_BURST_SZ];
+
+	if (lcore_id == lcore_master) {
+		rte_delay_ms(KNI_TIMEOUT_MS);
+		/* tests of handling kernel request */
+		if (system(IFCONFIG TEST_KNI_PORT" up") == -1)
+			ret = -1;
+		if (system(IFCONFIG TEST_KNI_PORT" mtu 1400") == -1)
+			ret = -1;
+		if (system(IFCONFIG TEST_KNI_PORT" down") == -1)
+			ret = -1;
+		rte_delay_ms(KNI_TIMEOUT_MS);
+		test_kni_processing_flag = 1;
+	} else if (lcore_id == lcore_ingress) {
+		struct rte_mempool *mp = test_kni_lookup_mempool();
+
+		if (mp == NULL)
+			return -1;
+
+		while (1) {
+			if (test_kni_processing_flag)
+				break;
+
+			for (nb_rx = 0; nb_rx < PKT_BURST_SZ; nb_rx++) {
+				pkts_burst[nb_rx] = rte_pktmbuf_alloc(mp);
+				if (!pkts_burst[nb_rx])
+					break;
+			}
+
+			num = rte_kni_tx_burst(test_kni_ctx, pkts_burst,
+								nb_rx);
+			stats.ingress += num;
+			rte_kni_handle_request(test_kni_ctx);
+			if (num < nb_rx) {
+				for (i = num; i < nb_rx; i++) {
+					rte_pktmbuf_free(pkts_burst[i]);
+				}
+			}
+			rte_delay_ms(10);
+		}
+	} else if (lcore_id == lcore_egress) {
+		while (1) {
+			if (test_kni_processing_flag)
+				break;
+			num = rte_kni_rx_burst(test_kni_ctx, pkts_burst,
+							PKT_BURST_SZ);
+			stats.egress += num;
+			for (nb_tx = 0; nb_tx < num; nb_tx++)
+				rte_pktmbuf_free(pkts_burst[nb_tx]);
+			rte_delay_ms(10);
+		}
+	}
+
+	return ret;
+}
+
+static int
+test_kni_allocate_lcores(void)
+{
+	unsigned i, count = 0;
+
+	lcore_master = rte_get_master_lcore();
+	printf("master lcore: %u\n", lcore_master);
+	for (i = 0; i < RTE_MAX_LCORE; i++) {
+		if (count >=2 )
+			break;
+		if (rte_lcore_is_enabled(i) && i != lcore_master) {
+			count ++;
+			if (count == 1)
+				lcore_ingress = i;
+			else if (count == 2)
+				lcore_egress = i;
+		}
+	}
+	printf("count: %u\n", count);
+
+	return count == 2 ? 0 : -1;
+}
+
+static int
+test_kni_register_handler_mp(void)
+{
+#define TEST_KNI_HANDLE_REQ_COUNT    10  /* 5s */
+#define TEST_KNI_HANDLE_REQ_INTERVAL 500 /* ms */
+#define TEST_KNI_MTU                 1450
+#define TEST_KNI_MTU_STR             " 1450"
+	int pid;
+
+	pid = fork();
+	if (pid < 0) {
+		printf("Failed to fork a process\n");
+		return -1;
+	} else if (pid == 0) {
+		int i;
+		struct rte_kni *kni = rte_kni_get(TEST_KNI_PORT);
+		struct rte_kni_ops ops = {
+			.change_mtu = kni_change_mtu,
+			.config_network_if = NULL,
+		};
+
+		if (!kni) {
+			printf("Failed to get KNI named %s\n", TEST_KNI_PORT);
+			exit(-1);
+		}
+
+		kni_pkt_mtu = 0;
+
+		/* Check with the invalid parameters */
+		if (rte_kni_register_handlers(kni, NULL) == 0) {
+			printf("Unexpectedly register successuflly "
+					"with NULL ops pointer\n");
+			exit(-1);
+		}
+		if (rte_kni_register_handlers(NULL, &ops) == 0) {
+			printf("Unexpectedly register successfully "
+					"to NULL KNI device pointer\n");
+			exit(-1);
+		}
+
+		if (rte_kni_register_handlers(kni, &ops)) {
+			printf("Fail to register ops\n");
+			exit(-1);
+		}
+
+		/* Check registering again after it has been registered */
+		if (rte_kni_register_handlers(kni, &ops) == 0) {
+			printf("Unexpectedly register successfully after "
+					"it has already been registered\n");
+			exit(-1);
+		}
+
+		/**
+		 * Handle the request of setting MTU,
+		 * with registered handlers.
+		 */
+		for (i = 0; i < TEST_KNI_HANDLE_REQ_COUNT; i++) {
+			rte_kni_handle_request(kni);
+			if (kni_pkt_mtu == TEST_KNI_MTU)
+				break;
+			rte_delay_ms(TEST_KNI_HANDLE_REQ_INTERVAL);
+		}
+		if (i >= TEST_KNI_HANDLE_REQ_COUNT) {
+			printf("MTU has not been set\n");
+			exit(-1);
+		}
+
+		kni_pkt_mtu = 0;
+		if (rte_kni_unregister_handlers(kni) < 0) {
+			printf("Fail to unregister ops\n");
+			exit(-1);
+		}
+
+		/* Check with invalid parameter */
+		if (rte_kni_unregister_handlers(NULL) == 0) {
+			exit(-1);
+		}
+
+		/**
+		 * Handle the request of setting MTU,
+		 * without registered handlers.
+		 */
+		for (i = 0; i < TEST_KNI_HANDLE_REQ_COUNT; i++) {
+			rte_kni_handle_request(kni);
+			if (kni_pkt_mtu != 0)
+				break;
+			rte_delay_ms(TEST_KNI_HANDLE_REQ_INTERVAL);
+		}
+		if (kni_pkt_mtu != 0) {
+			printf("MTU shouldn't be set\n");
+			exit(-1);
+		}
+
+		exit(0);
+	} else {
+		int p_ret, status;
+
+		rte_delay_ms(1000);
+		if (system(IFCONFIG TEST_KNI_PORT " mtu" TEST_KNI_MTU_STR)
+								== -1)
+			return -1;
+
+		rte_delay_ms(1000);
+		if (system(IFCONFIG TEST_KNI_PORT " mtu" TEST_KNI_MTU_STR)
+								== -1)
+			return -1;
+
+		p_ret = wait(&status);
+		if (!WIFEXITED(status)) {
+			printf("Child process (%d) exit abnormally\n", p_ret);
+			return -1;
+		}
+		if (WEXITSTATUS(status) != 0) {
+			printf("Child process exit with failure\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int
+test_kni_processing(uint8_t port_id, struct rte_mempool *mp)
+{
+	int ret = 0;
+	unsigned i;
+	struct rte_kni *kni;
+	struct rte_kni_conf conf;
+	struct rte_eth_dev_info info;
+	struct rte_kni_ops ops;
+
+	if (!mp)
+		return -1;
+
+	memset(&conf, 0, sizeof(conf));
+	memset(&info, 0, sizeof(info));
+	memset(&ops, 0, sizeof(ops));
+
+	rte_eth_dev_info_get(port_id, &info);
+	conf.addr = info.pci_dev->addr;
+	conf.id = info.pci_dev->id;
+	snprintf(conf.name, sizeof(conf.name), TEST_KNI_PORT);
+
+	/* core id 1 configured for kernel thread */
+	conf.core_id = 1;
+	conf.force_bind = 1;
+	conf.mbuf_size = MAX_PACKET_SZ;
+	conf.group_id = (uint16_t)port_id;
+
+	ops = kni_ops;
+	ops.port_id = port_id;
+
+	/* basic test of kni processing */
+	kni = rte_kni_alloc(mp, &conf, &ops);
+	if (!kni) {
+		printf("fail to create kni\n");
+		return -1;
+	}
+
+	test_kni_ctx = kni;
+	test_kni_processing_flag = 0;
+	stats.ingress = 0;
+	stats.egress = 0;
+
+	/**
+	 * Check multiple processes support on
+	 * registerring/unregisterring handlers.
+	 */
+	if (test_kni_register_handler_mp() < 0) {
+		printf("fail to check multiple process support\n");
+		ret = -1;
+		goto fail_kni;
+	}
+
+	rte_eal_mp_remote_launch(test_kni_loop, NULL, CALL_MASTER);
+	RTE_LCORE_FOREACH_SLAVE(i) {
+		if (rte_eal_wait_lcore(i) < 0) {
+			ret = -1;
+			goto fail_kni;
+		}
+	}
+	/**
+	 * Check if the number of mbufs received from kernel space is equal
+	 * to that of transmitted to kernel space
+	 */
+	if (stats.ingress < KNI_NUM_MBUF_THRESHOLD ||
+		stats.egress < KNI_NUM_MBUF_THRESHOLD) {
+		printf("The ingress/egress number should not be "
+			"less than %u\n", (unsigned)KNI_NUM_MBUF_THRESHOLD);
+		ret = -1;
+		goto fail_kni;
+	}
+
+	if (rte_kni_release(kni) < 0) {
+		printf("fail to release kni\n");
+		return -1;
+	}
+	test_kni_ctx = NULL;
+
+	/* test of releasing a released kni device */
+	if (rte_kni_release(kni) == 0) {
+		printf("should not release a released kni device\n");
+		return -1;
+	}
+
+	/* test of reusing memzone */
+	kni = rte_kni_alloc(mp, &conf, &ops);
+	if (!kni) {
+		printf("fail to create kni\n");
+		return -1;
+	}
+
+	/* Release the kni for following testing */
+	if (rte_kni_release(kni) < 0) {
+		printf("fail to release kni\n");
+		return -1;
+	}
+
+	return ret;
+fail_kni:
+	if (rte_kni_release(kni) < 0) {
+		printf("fail to release kni\n");
+		ret = -1;
+	}
+
+	return ret;
+}
+
+static int
+test_kni(void)
+{
+	int ret = -1;
+	uint8_t nb_ports, port_id;
+	struct rte_kni *kni;
+	struct rte_mempool *mp;
+	struct rte_kni_conf conf;
+	struct rte_eth_dev_info info;
+	struct rte_kni_ops ops;
+
+	/* Initialize KNI subsytem */
+	rte_kni_init(KNI_TEST_MAX_PORTS);
+
+	if (test_kni_allocate_lcores() < 0) {
+		printf("No enough lcores for kni processing\n");
+		return -1;
+	}
+
+	mp = test_kni_create_mempool();
+	if (!mp) {
+		printf("fail to create mempool for kni\n");
+		return -1;
+	}
+
+	nb_ports = rte_eth_dev_count();
+	if (nb_ports == 0) {
+		printf("no supported nic port found\n");
+		return -1;
+	}
+
+	/* configuring port 0 for the test is enough */
+	port_id = 0;
+	ret = rte_eth_dev_configure(port_id, 1, 1, &port_conf);
+	if (ret < 0) {
+		printf("fail to configure port %d\n", port_id);
+		return -1;
+	}
+
+	ret = rte_eth_rx_queue_setup(port_id, 0, NB_RXD, SOCKET, &rx_conf, mp);
+	if (ret < 0) {
+		printf("fail to setup rx queue for port %d\n", port_id);
+		return -1;
+	}
+
+	ret = rte_eth_tx_queue_setup(port_id, 0, NB_TXD, SOCKET, &tx_conf);
+	if (ret < 0) {
+		printf("fail to setup tx queue for port %d\n", port_id);
+		return -1;
+	}
+
+	ret = rte_eth_dev_start(port_id);
+	if (ret < 0) {
+		printf("fail to start port %d\n", port_id);
+		return -1;
+	}
+	rte_eth_promiscuous_enable(port_id);
+
+	/* basic test of kni processing */
+	ret = test_kni_processing(port_id, mp);
+	if (ret < 0)
+		goto fail;
+
+	/* test of allocating KNI with NULL mempool pointer */
+	memset(&info, 0, sizeof(info));
+	memset(&conf, 0, sizeof(conf));
+	memset(&ops, 0, sizeof(ops));
+	rte_eth_dev_info_get(port_id, &info);
+	conf.addr = info.pci_dev->addr;
+	conf.id = info.pci_dev->id;
+	conf.group_id = (uint16_t)port_id;
+	conf.mbuf_size = MAX_PACKET_SZ;
+
+	ops = kni_ops;
+	ops.port_id = port_id;
+	kni = rte_kni_alloc(NULL, &conf, &ops);
+	if (kni) {
+		ret = -1;
+		printf("unexpectedly creates kni successfully with NULL "
+							"mempool pointer\n");
+		goto fail;
+	}
+
+	/* test of allocating KNI without configurations */
+	kni = rte_kni_alloc(mp, NULL, NULL);
+	if (kni) {
+		ret = -1;
+		printf("Unexpectedly allocate KNI device successfully "
+					"without configurations\n");
+		goto fail;
+	}
+
+	/* test of allocating KNI without a name */
+	memset(&conf, 0, sizeof(conf));
+	memset(&info, 0, sizeof(info));
+	memset(&ops, 0, sizeof(ops));
+	rte_eth_dev_info_get(port_id, &info);
+	conf.addr = info.pci_dev->addr;
+	conf.id = info.pci_dev->id;
+	conf.group_id = (uint16_t)port_id;
+	conf.mbuf_size = MAX_PACKET_SZ;
+
+	ops = kni_ops;
+	ops.port_id = port_id;
+	kni = rte_kni_alloc(mp, &conf, &ops);
+	if (kni) {
+		ret = -1;
+		printf("Unexpectedly allocate a KNI device successfully "
+						"without a name\n");
+		goto fail;
+	}
+
+	/* test of releasing NULL kni context */
+	ret = rte_kni_release(NULL);
+	if (ret == 0) {
+		ret = -1;
+		printf("unexpectedly release kni successfully\n");
+		goto fail;
+	}
+
+	/* test of handling request on NULL device pointer */
+	ret = rte_kni_handle_request(NULL);
+	if (ret == 0) {
+		ret = -1;
+		printf("Unexpectedly handle request on NULL device pointer\n");
+		goto fail;
+	}
+
+	/* test of getting KNI device with pointer to NULL */
+	kni = rte_kni_get(NULL);
+	if (kni) {
+		ret = -1;
+		printf("Unexpectedly get a KNI device with "
+					"NULL name pointer\n");
+		goto fail;
+	}
+
+	/* test of getting KNI device with an zero length name string */
+	memset(&conf, 0, sizeof(conf));
+	kni = rte_kni_get(conf.name);
+	if (kni) {
+		ret = -1;
+		printf("Unexpectedly get a KNI device with "
+				"zero length name string\n");
+		goto fail;
+	}
+
+	/* test of getting KNI device with an invalid string name */
+	memset(&conf, 0, sizeof(conf));
+	snprintf(conf.name, sizeof(conf.name), "testing");
+	kni = rte_kni_get(conf.name);
+	if (kni) {
+		ret = -1;
+		printf("Unexpectedly get a KNI device with "
+				"a never used name string\n");
+		goto fail;
+	}
+	ret = 0;
+
+fail:
+	rte_eth_dev_stop(port_id);
+
+	return ret;
+}
+
+static struct test_command kni_cmd = {
+	.command = "kni_autotest",
+	.callback = test_kni,
+};
+REGISTER_TEST_COMMAND(kni_cmd);