[dpdk-dev] [RFC 7/8] eal: add IPC type for interrupt thread

[Jianfeng Tan <jianfeng.tan@intel.com>]

We are going to merge IPC into interrupt thread. This patch adds
IPC type for interrupt thread.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
---
 lib/librte_eal/common/include/rte_eal_interrupts.h |  1 +
 lib/librte_eal/linuxapp/eal/eal_interrupts.c       |  5 ++++
 test/test/test_interrupts.c                        | 29 +++++++++++++++++++++-
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/include/rte_eal_interrupts.h b/lib/librte_eal/common/include/rte_eal_interrupts.h
index 6eb4932..344db76 100644
--- a/lib/librte_eal/common/include/rte_eal_interrupts.h
+++ b/lib/librte_eal/common/include/rte_eal_interrupts.h
@@ -35,6 +35,7 @@ enum rte_intr_handle_type {
 	RTE_INTR_HANDLE_EXT,          /**< external handler */
 	RTE_INTR_HANDLE_VDEV,         /**< virtual device */
 	RTE_INTR_HANDLE_DEV_EVENT,    /**< device event handle */
+	RTE_INTR_HANDLE_IPC,          /**< IPC event handle */
 	RTE_INTR_HANDLE_MAX           /**< count of elements */
 };
 
diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
index 5245372..b23fd9e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
+++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
@@ -559,6 +559,8 @@ rte_intr_enable(const struct rte_intr_handle *intr_handle)
 	/* not used at this moment */
 	case RTE_INTR_HANDLE_DEV_EVENT:
 		return -1;
+	case RTE_INTR_HANDLE_IPC:
+		return -1;
 	/* unknown handle type */
 	default:
 		RTE_LOG(ERR, EAL,
@@ -609,6 +611,8 @@ rte_intr_disable(const struct rte_intr_handle *intr_handle)
 	/* not used at this moment */
 	case RTE_INTR_HANDLE_DEV_EVENT:
 		return -1;
+	case RTE_INTR_HANDLE_IPC:
+		return -1;
 	/* unknown handle type */
 	default:
 		RTE_LOG(ERR, EAL,
@@ -678,6 +682,7 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 			call = true;
 			break;
 		case RTE_INTR_HANDLE_DEV_EVENT:
+		case RTE_INTR_HANDLE_IPC:
 			bytes_read = 0;
 			call = true;
 			break;
diff --git a/test/test/test_interrupts.c b/test/test/test_interrupts.c
index dc19175..7c42d71 100644
--- a/test/test/test_interrupts.c
+++ b/test/test/test_interrupts.c
@@ -21,6 +21,7 @@ enum test_interrupt_handle_type {
 	TEST_INTERRUPT_HANDLE_VALID_UIO,
 	TEST_INTERRUPT_HANDLE_VALID_ALARM,
 	TEST_INTERRUPT_HANDLE_VALID_DEV_EVENT,
+	TEST_INTERRUPT_HANDLE_VALID_IPC,
 	TEST_INTERRUPT_HANDLE_CASE1,
 	TEST_INTERRUPT_HANDLE_MAX
 };
@@ -85,6 +86,10 @@ test_interrupt_init(void)
 	intr_handles[TEST_INTERRUPT_HANDLE_VALID_DEV_EVENT].type =
 					RTE_INTR_HANDLE_DEV_EVENT;
 
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID_IPC].fd = pfds.readfd;
+	intr_handles[TEST_INTERRUPT_HANDLE_VALID_IPC].type =
+					RTE_INTR_HANDLE_IPC;
+
 	intr_handles[TEST_INTERRUPT_HANDLE_CASE1].fd = pfds.writefd;
 	intr_handles[TEST_INTERRUPT_HANDLE_CASE1].type = RTE_INTR_HANDLE_UIO;
 
@@ -263,6 +268,14 @@ test_interrupt_enable(void)
 		return -1;
 	}
 
+	/* check with specific valid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_IPC];
+	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) {
@@ -327,6 +340,14 @@ test_interrupt_disable(void)
 		return -1;
 	}
 
+	/* check with specific valid intr_handle */
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_IPC];
+	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) {
@@ -424,7 +445,7 @@ test_interrupt(void)
 
 	printf("Check valid alarm interrupt full path\n");
 	if (test_interrupt_full_path_check(
-		TEST_INTERRUPT_HANDLE_VALID_DEV_EVENT) < 0) {
+		TEST_INTERRUPT_HANDLE_VALID_IPC) < 0) {
 		printf("failure occurred during checking valid alarm "
 						"interrupt full path\n");
 		goto out;
@@ -548,6 +569,12 @@ test_interrupt(void)
 	rte_intr_callback_unregister(&test_intr_handle,
 			test_interrupt_callback_1, (void *)-1);
 
+	test_intr_handle = intr_handles[TEST_INTERRUPT_HANDLE_VALID_VFIO];
+	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();
-- 
2.7.4