Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 555 insertions, 0 deletions

diff --git a/app/test/test_interrupts.c b/app/test/test_interrupts.c
new file mode 100644
index 00000000..6e3dec31
--- /dev/null
+++ b/app/test/test_interrupts.c
@@ -0,0 +1,555 @@
+/*-
+ *  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 <rte_common.h>
+#include <rte_cycles.h>
+#include <rte_interrupts.h>
+
+#include "test.h"
+
+#define TEST_INTERRUPT_CHECK_INTERVAL 1000 /* ms */
+
+/* predefined interrupt handle types */
+enum test_interrupt_handle_type {
+	TEST_INTERRUPT_HANDLE_INVALID,
+	TEST_INTERRUPT_HANDLE_VALID,
+	TEST_INTERRUPT_HANDLE_VALID_UIO,
+	TEST_INTERRUPT_HANDLE_VALID_ALARM,
+	TEST_INTERRUPT_HANDLE_CASE1,
+	TEST_INTERRUPT_HANDLE_MAX
+};
+
+/* flag of if callback is called */
+static volatile int flag;
+static struct rte_intr_handle intr_handles[TEST_INTERRUPT_HANDLE_MAX];
+static enum test_interrupt_handle_type test_intr_type =
+				TEST_INTERRUPT_HANDLE_MAX;
+
+#ifdef RTE_EXEC_ENV_LINUXAPP
+union intr_pipefds{
+	struct {
+		int pipefd[2];
+	};
+	struct {
+		int readfd;
+		int writefd;
+	};
+};
+
+static union intr_pipefds pfds;
+
+/**
+ * Check if the interrupt handle is valid.
+ */
+static inline int
+test_interrupt_handle_sanity_check(struct rte_intr_handle *intr_handle)
+{
+	if (!intr_handle || intr_handle->fd < 0)
+		return -1;
+
+	return 0;
+}
+
+/**
+ * Initialization for interrupt test.
+ */
+static int
+test_interrupt_init(void)
+{
+	if (pipe(pfds.pipefd) < 0)
+		return -1;
+
+	intr_handles[TEST_INTERRUPT_HANDLE_INVALID].fd = -1;
+	intr_handles[TEST_INTERRUPT_HANDLE_INVALID].type =
+					RTE_INTR_HANDLE_UNKNOWN;
+
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID].fd = pfds.readfd;
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID].type =
+					RTE_INTR_HANDLE_UNKNOWN;
+
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID_UIO].fd = pfds.readfd;
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID_UIO].type =
+					RTE_INTR_HANDLE_UIO;
+
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID_ALARM].fd = pfds.readfd;
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID_ALARM].type =
+					RTE_INTR_HANDLE_ALARM;
+
+	intr_handles[TEST_INTERRUPT_HANDLE_CASE1].fd = pfds.writefd;
+	intr_handles[TEST_INTERRUPT_HANDLE_CASE1].type = RTE_INTR_HANDLE_UIO;
+
+	return 0;
+}
+
+/**
+ * Deinitialization for interrupt test.
+ */
+static int
+test_interrupt_deinit(void)
+{
+	close(pfds.pipefd[0]);
+	close(pfds.pipefd[1]);
+
+	return 0;
+}
+
+/**
+ * Write the pipe to simulate an interrupt.
+ */
+static int
+test_interrupt_trigger_interrupt(void)
+{
+	if (write(pfds.writefd, "1", 1) < 0)
+		return -1;
+
+	return 0;
+}
+
+/**
+ * Check if two interrupt handles are the same.
+ */
+static int
+test_interrupt_handle_compare(struct rte_intr_handle *intr_handle_l,
+				struct rte_intr_handle *intr_handle_r)
+{
+	if (!intr_handle_l || !intr_handle_r)
+		return -1;
+
+	if (intr_handle_l->fd != intr_handle_r->fd ||
+		intr_handle_l->type != intr_handle_r->type)
+		return -1;
+
+	return 0;
+}
+
+#else
+/* to be implemented for bsd later */
+static inline int
+test_interrupt_handle_sanity_check(struct rte_intr_handle *intr_handle)
+{
+	RTE_SET_USED(intr_handle);
+
+	return 0;
+}
+
+static int
+test_interrupt_init(void)
+{
+	return 0;
+}
+
+static int
+test_interrupt_deinit(void)
+{
+	return 0;
+}
+
+static int
+test_interrupt_trigger_interrupt(void)
+{
+	return 0;
+}
+
+static int
+test_interrupt_handle_compare(struct rte_intr_handle *intr_handle_l,
+				struct rte_intr_handle *intr_handle_r)
+{
+	(void)intr_handle_l;
+	(void)intr_handle_r;
+
+	return 0;
+}
+#endif /* RTE_EXEC_ENV_LINUXAPP */
+
+/**
+ * Callback for the test interrupt.
+ */
+static void
+test_interrupt_callback(struct rte_intr_handle *intr_handle, void *arg)
+{
+	if (test_intr_type >= TEST_INTERRUPT_HANDLE_MAX) {
+		printf("invalid interrupt type\n");
+		flag = -1;
+		return;
+	}
+
+	if (test_interrupt_handle_sanity_check(intr_handle) < 0) {
+		printf("null or invalid intr_handle for %s\n", __func__);
+		flag = -1;
+		return;
+	}
+
+	if (rte_intr_callback_unregister(intr_handle,
+			test_interrupt_callback, arg) >= 0) {
+		printf("%s: unexpectedly able to unregister itself\n",
+			__func__);
+		flag = -1;
+		return;
+	}
+
+	if (test_interrupt_handle_compare(intr_handle,
+			&(intr_handles[test_intr_type])) == 0)
+		flag = 1;
+}
+
+/**
+ * Callback for the test interrupt.
+ */
+static void
+test_interrupt_callback_1(struct rte_intr_handle *intr_handle,
+	__attribute__((unused)) void *arg)
+{
+	if (test_interrupt_handle_sanity_check(intr_handle) < 0) {
+		printf("null or invalid intr_handle for %s\n", __func__);
+		flag = -1;
+		return;
+	}
+}
+
+/**
+ * Tests for rte_intr_enable().
+ */
+static int
+test_interrupt_enable(void)
+{
+	struct rte_intr_handle test_intr_handle;
+
+	/* check with null intr_handle */
+	if (rte_intr_enable(NULL) == 0) {
+		printf("unexpectedly enable null intr_handle successfully\n");
+		return -1;
+	}
+
+	/* check with invalid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_INVALID];
+	if (rte_intr_enable(&test_intr_handle) == 0) {
+		printf("unexpectedly enable invalid intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with valid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID];
+	if (rte_intr_enable(&test_intr_handle) == 0) {
+		printf("unexpectedly enable a specific intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with specific valid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_ALARM];
+	if (rte_intr_enable(&test_intr_handle) == 0) {
+		printf("unexpectedly enable a specific intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with valid handler and its type */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_CASE1];
+	if (rte_intr_enable(&test_intr_handle) < 0) {
+		printf("fail to enable interrupt on a simulated handler\n");
+		return -1;
+	}
+
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_UIO];
+	if (rte_intr_enable(&test_intr_handle) == 0) {
+		printf("unexpectedly enable a specific intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * Tests for rte_intr_disable().
+ */
+static int
+test_interrupt_disable(void)
+{
+	struct rte_intr_handle test_intr_handle;
+
+	/* check with null intr_handle */
+	if (rte_intr_disable(NULL) == 0) {
+		printf("unexpectedly disable null intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with invalid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_INVALID];
+	if (rte_intr_disable(&test_intr_handle) == 0) {
+		printf("unexpectedly disable invalid intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with valid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID];
+	if (rte_intr_disable(&test_intr_handle) == 0) {
+		printf("unexpectedly disable a specific intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with specific valid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_ALARM];
+	if (rte_intr_disable(&test_intr_handle) == 0) {
+		printf("unexpectedly disable a specific intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	/* check with valid handler and its type */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_CASE1];
+	if (rte_intr_disable(&test_intr_handle) < 0) {
+		printf("fail to disable interrupt on a simulated handler\n");
+		return -1;
+	}
+
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_UIO];
+	if (rte_intr_disable(&test_intr_handle) == 0) {
+		printf("unexpectedly disable a specific intr_handle "
+			"successfully\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * Check the full path of a specified type of interrupt simulated.
+ */
+static int
+test_interrupt_full_path_check(enum test_interrupt_handle_type intr_type)
+{
+	int count;
+	struct rte_intr_handle test_intr_handle;
+
+	flag = 0;
+	test_intr_handle = intr_handles[intr_type];
+	test_intr_type = intr_type;
+	if (rte_intr_callback_register(&test_intr_handle,
+			test_interrupt_callback, NULL) < 0) {
+		printf("fail to register callback\n");
+		return -1;
+	}
+
+	if (test_interrupt_trigger_interrupt() < 0)
+		return -1;
+
+	/* check flag in 3 seconds */
+	for (count = 0; flag == 0 && count < 3; count++)
+		rte_delay_ms(TEST_INTERRUPT_CHECK_INTERVAL);
+
+	rte_delay_ms(TEST_INTERRUPT_CHECK_INTERVAL);
+	if (rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, NULL) < 0)
+		return -1;
+
+	if (flag == 0) {
+		printf("callback has not been called\n");
+		return -1;
+	} else if (flag < 0) {
+		printf("it has internal error in callback\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * Main function of testing interrupt.
+ */
+static int
+test_interrupt(void)
+{
+	int ret = -1;
+	struct rte_intr_handle test_intr_handle;
+
+	if (test_interrupt_init() < 0) {
+		printf("fail to initialize for testing interrupt\n");
+		return -1;
+	}
+
+	printf("Check unknown valid interrupt full path\n");
+	if (test_interrupt_full_path_check(TEST_INTERRUPT_HANDLE_VALID) < 0) {
+		printf("failure occured during checking unknown valid "
+						"interrupt full path\n");
+		goto out;
+	}
+
+	printf("Check valid UIO interrupt full path\n");
+	if (test_interrupt_full_path_check(TEST_INTERRUPT_HANDLE_VALID_UIO)
+									< 0) {
+		printf("failure occured during checking valid UIO interrupt "
+								"full path\n");
+		goto out;
+	}
+
+	printf("Check valid alarm interrupt full path\n");
+	if (test_interrupt_full_path_check(TEST_INTERRUPT_HANDLE_VALID_ALARM)
+									< 0) {
+		printf("failure occured during checking valid alarm "
+						"interrupt full path\n");
+		goto out;
+	}
+
+	printf("start register/unregister test\n");
+	/* check if it will fail to register cb with intr_handle = NULL */
+	if (rte_intr_callback_register(NULL, test_interrupt_callback,
+							NULL) == 0) {
+		printf("unexpectedly register successfully with null "
+			"intr_handle\n");
+		goto out;
+	}
+
+	/* check if it will fail to register cb with invalid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_INVALID];
+	if (rte_intr_callback_register(&test_intr_handle,
+			test_interrupt_callback, NULL) == 0) {
+		printf("unexpectedly register successfully with invalid "
+			"intr_handle\n");
+		goto out;
+	}
+
+	/* check if it will fail to register without callback */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID];
+	if (rte_intr_callback_register(&test_intr_handle, NULL, NULL) == 0) {
+		printf("unexpectedly register successfully with "
+			"null callback\n");
+		goto out;
+	}
+
+	/* check if it will fail to unregister cb with intr_handle = NULL */
+	if (rte_intr_callback_unregister(NULL,
+			test_interrupt_callback, NULL) > 0) {
+		printf("unexpectedly unregister successfully with "
+			"null intr_handle\n");
+		goto out;
+	}
+
+	/* check if it will fail to unregister cb with invalid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_INVALID];
+	if (rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, NULL) > 0) {
+		printf("unexpectedly unregister successfully with "
+			"invalid intr_handle\n");
+		goto out;
+	}
+
+	/* check if it is ok to register the same intr_handle twice */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID];
+	if (rte_intr_callback_register(&test_intr_handle,
+			test_interrupt_callback, NULL) < 0) {
+		printf("it fails to register test_interrupt_callback\n");
+		goto out;
+	}
+	if (rte_intr_callback_register(&test_intr_handle,
+			test_interrupt_callback_1, NULL) < 0) {
+		printf("it fails to register test_interrupt_callback_1\n");
+		goto out;
+	}
+	/* check if it will fail to unregister with invalid parameter */
+	if (rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, (void *)0xff) != 0) {
+		printf("unexpectedly unregisters successfully with "
+							"invalid arg\n");
+		goto out;
+	}
+	if (rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, NULL) <= 0) {
+		printf("it fails to unregister test_interrupt_callback\n");
+		goto out;
+	}
+	if (rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback_1, (void *)-1) <= 0) {
+		printf("it fails to unregister test_interrupt_callback_1 "
+			"for all\n");
+		goto out;
+	}
+	rte_delay_ms(TEST_INTERRUPT_CHECK_INTERVAL);
+
+	printf("start interrupt enable/disable test\n");
+	/* check interrupt enable/disable functions */
+	if (test_interrupt_enable() < 0) {
+		printf("fail to check interrupt enabling\n");
+		goto out;
+	}
+	rte_delay_ms(TEST_INTERRUPT_CHECK_INTERVAL);
+
+	if (test_interrupt_disable() < 0) {
+		printf("fail to check interrupt disabling\n");
+		goto out;
+	}
+	rte_delay_ms(TEST_INTERRUPT_CHECK_INTERVAL);
+
+	ret = 0;
+
+out:
+	printf("Clearing for interrupt tests\n");
+	/* clear registered callbacks */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID];
+	rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, (void *)-1);
+	rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback_1, (void *)-1);
+
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_UIO];
+	rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, (void *)-1);
+	rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback_1, (void *)-1);
+
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_ALARM];
+	rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback, (void *)-1);
+	rte_intr_callback_unregister(&test_intr_handle,
+			test_interrupt_callback_1, (void *)-1);
+
+	rte_delay_ms(2 * TEST_INTERRUPT_CHECK_INTERVAL);
+	/* deinit */
+	test_interrupt_deinit();
+
+	return ret;
+}
+
+static struct test_command interrupt_cmd = {
+	.command = "interrupt_autotest",
+	.callback = test_interrupt,
+};
+REGISTER_TEST_COMMAND(interrupt_cmd);