diff mbox series

[v2,2/6] eal/interrupts: avoid direct access to interrupt handle

Message ID 20211005121502.66964-3-hkalra@marvell.com (mailing list archive)
State Changes Requested, archived
Delegated to: David Marchand
Headers show
Series make rte_intr_handle internal | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Harman Kalra Oct. 5, 2021, 12:14 p.m. UTC
Making changes to the interrupt framework to use interrupt handle
APIs to get/set any field. Direct access to any of the fields
should be avoided to avoid any ABI breakage in future.

Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
 lib/eal/freebsd/eal_interrupts.c | 111 ++++++++----
 lib/eal/include/rte_interrupts.h |   2 +
 lib/eal/linux/eal_interrupts.c   | 302 +++++++++++++++++++------------
 3 files changed, 268 insertions(+), 147 deletions(-)

Comments

Dmitry Kozlyuk Oct. 14, 2021, 12:59 a.m. UTC | #1
2021-10-05 17:44 (UTC+0530), Harman Kalra:
> Making changes to the interrupt framework to use interrupt handle
> APIs to get/set any field. Direct access to any of the fields
> should be avoided to avoid any ABI breakage in future.

How is ABI breakage applicable to internal consumers?

This protects against fields renaming for sure, but convenience is arguable.
If EAL needs to add a EAL-private field to struct rte_intr_handle,
it must add an accessor even though the field is likely OS-specific.
It would be simpler if the definition was in some private EAL header
and could be accessed directly by EAL code.
Harman Kalra Oct. 14, 2021, 5:31 p.m. UTC | #2
> -----Original Message-----
> From: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> Sent: Thursday, October 14, 2021 6:29 AM
> To: Harman Kalra <hkalra@marvell.com>
> Cc: dev@dpdk.org; Bruce Richardson <bruce.richardson@intel.com>;
> david.marchand@redhat.com; mdr@ashroe.eu
> Subject: [EXT] Re: [PATCH v2 2/6] eal/interrupts: avoid direct access to
> interrupt handle
> 
> External Email
> 
> ----------------------------------------------------------------------
> 2021-10-05 17:44 (UTC+0530), Harman Kalra:
> > Making changes to the interrupt framework to use interrupt handle APIs
> > to get/set any field. Direct access to any of the fields should be
> > avoided to avoid any ABI breakage in future.
> 
> How is ABI breakage applicable to internal consumers?
> 
> This protects against fields renaming for sure, but convenience is arguable.
> If EAL needs to add a EAL-private field to struct rte_intr_handle, it must add
> an accessor even though the field is likely OS-specific.
> It would be simpler if the definition was in some private EAL header and
> could be accessed directly by EAL code.

Initially we thought to implement this way only i.e. defining rte_intr_handle inside internal headers
but supporting out of tree drivers was one of the reason to go via this get/set approach. All drivers
internal and external should follow the same way, that was the intention. 

Thanks
Harman
Dmitry Kozlyuk Oct. 14, 2021, 5:53 p.m. UTC | #3
2021-10-14 17:31 (UTC+0000), Harman Kalra:
> > -----Original Message-----
> > From: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> > Sent: Thursday, October 14, 2021 6:29 AM
> > To: Harman Kalra <hkalra@marvell.com>
> > Cc: dev@dpdk.org; Bruce Richardson <bruce.richardson@intel.com>;
> > david.marchand@redhat.com; mdr@ashroe.eu
> > Subject: [EXT] Re: [PATCH v2 2/6] eal/interrupts: avoid direct access to
> > interrupt handle
> > 
> > External Email
> > 
> > ----------------------------------------------------------------------
> > 2021-10-05 17:44 (UTC+0530), Harman Kalra:  
> > > Making changes to the interrupt framework to use interrupt handle APIs
> > > to get/set any field. Direct access to any of the fields should be
> > > avoided to avoid any ABI breakage in future.  
> > 
> > How is ABI breakage applicable to internal consumers?
> > 
> > This protects against fields renaming for sure, but convenience is arguable.
> > If EAL needs to add a EAL-private field to struct rte_intr_handle, it must add
> > an accessor even though the field is likely OS-specific.
> > It would be simpler if the definition was in some private EAL header and
> > could be accessed directly by EAL code.  
> 
> Initially we thought to implement this way only i.e. defining rte_intr_handle inside internal headers
> but supporting out of tree drivers was one of the reason to go via this get/set approach. All drivers
> internal and external should follow the same way, that was the intention. 
> 
> Thanks
> Harman

True for drivers, I understand this, but the question is about EAL itself.
I shouldn't say "internal consumers", I only meant EAL, not inbox drivers.
diff mbox series

Patch

diff --git a/lib/eal/freebsd/eal_interrupts.c b/lib/eal/freebsd/eal_interrupts.c
index 86810845fe..cf6216601b 100644
--- a/lib/eal/freebsd/eal_interrupts.c
+++ b/lib/eal/freebsd/eal_interrupts.c
@@ -40,7 +40,7 @@  struct rte_intr_callback {
 
 struct rte_intr_source {
 	TAILQ_ENTRY(rte_intr_source) next;
-	struct rte_intr_handle intr_handle; /**< interrupt handle */
+	struct rte_intr_handle *intr_handle; /**< interrupt handle */
 	struct rte_intr_cb_list callbacks;  /**< user callbacks */
 	uint32_t active;
 };
@@ -60,7 +60,7 @@  static int
 intr_source_to_kevent(const struct rte_intr_handle *ih, struct kevent *ke)
 {
 	/* alarm callbacks are special case */
-	if (ih->type == RTE_INTR_HANDLE_ALARM) {
+	if (rte_intr_type_get(ih) == RTE_INTR_HANDLE_ALARM) {
 		uint64_t timeout_ns;
 
 		/* get soonest alarm timeout */
@@ -75,7 +75,7 @@  intr_source_to_kevent(const struct rte_intr_handle *ih, struct kevent *ke)
 	} else {
 		ke->filter = EVFILT_READ;
 	}
-	ke->ident = ih->fd;
+	ke->ident = rte_intr_fd_get(ih);
 
 	return 0;
 }
@@ -86,10 +86,11 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 {
 	struct rte_intr_callback *callback;
 	struct rte_intr_source *src;
-	int ret = 0, add_event = 0;
+	int ret = 0, add_event = 0, mem_allocator;
 
 	/* first do parameter checking */
-	if (intr_handle == NULL || intr_handle->fd < 0 || cb == NULL) {
+	if (intr_handle == NULL || rte_intr_fd_get(intr_handle) < 0 ||
+	    cb == NULL) {
 		RTE_LOG(ERR, EAL,
 			"Registering with invalid input parameter\n");
 		return -EINVAL;
@@ -103,7 +104,8 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 
 	/* find the source for this intr_handle */
 	TAILQ_FOREACH(src, &intr_sources, next) {
-		if (src->intr_handle.fd == intr_handle->fd)
+		if (rte_intr_fd_get(src->intr_handle) ==
+		    rte_intr_fd_get(intr_handle))
 			break;
 	}
 
@@ -112,8 +114,8 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 	 * thing on the list should be eal_alarm_callback() and we may
 	 * be called just to reset the timer.
 	 */
-	if (src != NULL && src->intr_handle.type == RTE_INTR_HANDLE_ALARM &&
-		 !TAILQ_EMPTY(&src->callbacks)) {
+	if (src != NULL && rte_intr_type_get(src->intr_handle) ==
+		RTE_INTR_HANDLE_ALARM && !TAILQ_EMPTY(&src->callbacks)) {
 		callback = NULL;
 	} else {
 		/* allocate a new interrupt callback entity */
@@ -135,9 +137,35 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 				ret = -ENOMEM;
 				goto fail;
 			} else {
-				src->intr_handle = *intr_handle;
-				TAILQ_INIT(&src->callbacks);
-				TAILQ_INSERT_TAIL(&intr_sources, src, next);
+				/* src->interrupt instance memory allocated
+				 * depends on from where intr_handle memory
+				 * is allocated.
+				 */
+				mem_allocator =
+					rte_intr_instance_mem_allocator_get(
+								intr_handle);
+				if (mem_allocator == 0)
+					src->intr_handle =
+						rte_intr_instance_alloc(
+						RTE_INTR_ALLOC_TRAD_HEAP);
+				else if (mem_allocator == 1)
+					src->intr_handle =
+						rte_intr_instance_alloc(
+						RTE_INTR_ALLOC_DPDK_ALLOCATOR);
+				else
+					RTE_LOG(ERR, EAL, "Failed to get mem allocator\n");
+
+				if (src->intr_handle == NULL) {
+					RTE_LOG(ERR, EAL, "Can not create intr instance\n");
+					free(callback);
+					ret = -ENOMEM;
+				} else {
+					rte_intr_instance_copy(src->intr_handle,
+							       intr_handle);
+					TAILQ_INIT(&src->callbacks);
+					TAILQ_INSERT_TAIL(&intr_sources, src,
+							  next);
+				}
 			}
 		}
 
@@ -151,7 +179,8 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 	/* add events to the queue. timer events are special as we need to
 	 * re-set the timer.
 	 */
-	if (add_event || src->intr_handle.type == RTE_INTR_HANDLE_ALARM) {
+	if (add_event || rte_intr_type_get(src->intr_handle) ==
+							RTE_INTR_HANDLE_ALARM) {
 		struct kevent ke;
 
 		memset(&ke, 0, sizeof(ke));
@@ -173,12 +202,13 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 			 */
 			if (errno == ENODEV)
 				RTE_LOG(DEBUG, EAL, "Interrupt handle %d not supported\n",
-					src->intr_handle.fd);
+				rte_intr_fd_get(src->intr_handle));
 			else
 				RTE_LOG(ERR, EAL, "Error adding fd %d "
-						"kevent, %s\n",
-						src->intr_handle.fd,
-						strerror(errno));
+					"kevent, %s\n",
+					rte_intr_fd_get(
+							src->intr_handle),
+					strerror(errno));
 			ret = -errno;
 			goto fail;
 		}
@@ -213,7 +243,7 @@  rte_intr_callback_unregister_pending(const struct rte_intr_handle *intr_handle,
 	struct rte_intr_callback *cb, *next;
 
 	/* do parameter checking first */
-	if (intr_handle == NULL || intr_handle->fd < 0) {
+	if (intr_handle == NULL || rte_intr_fd_get(intr_handle) < 0) {
 		RTE_LOG(ERR, EAL,
 		"Unregistering with invalid input parameter\n");
 		return -EINVAL;
@@ -228,7 +258,8 @@  rte_intr_callback_unregister_pending(const struct rte_intr_handle *intr_handle,
 
 	/* check if the insterrupt source for the fd is existent */
 	TAILQ_FOREACH(src, &intr_sources, next)
-		if (src->intr_handle.fd == intr_handle->fd)
+		if (rte_intr_fd_get(src->intr_handle) ==
+					rte_intr_fd_get(intr_handle))
 			break;
 
 	/* No interrupt source registered for the fd */
@@ -268,7 +299,7 @@  rte_intr_callback_unregister(const struct rte_intr_handle *intr_handle,
 	struct rte_intr_callback *cb, *next;
 
 	/* do parameter checking first */
-	if (intr_handle == NULL || intr_handle->fd < 0) {
+	if (intr_handle == NULL || rte_intr_fd_get(intr_handle) < 0) {
 		RTE_LOG(ERR, EAL,
 		"Unregistering with invalid input parameter\n");
 		return -EINVAL;
@@ -282,7 +313,8 @@  rte_intr_callback_unregister(const struct rte_intr_handle *intr_handle,
 
 	/* check if the insterrupt source for the fd is existent */
 	TAILQ_FOREACH(src, &intr_sources, next)
-		if (src->intr_handle.fd == intr_handle->fd)
+		if (rte_intr_fd_get(src->intr_handle) ==
+					rte_intr_fd_get(intr_handle))
 			break;
 
 	/* No interrupt source registered for the fd */
@@ -314,7 +346,8 @@  rte_intr_callback_unregister(const struct rte_intr_handle *intr_handle,
 		 */
 		if (kevent(kq, &ke, 1, NULL, 0, NULL) < 0) {
 			RTE_LOG(ERR, EAL, "Error removing fd %d kevent, %s\n",
-				src->intr_handle.fd, strerror(errno));
+				rte_intr_fd_get(src->intr_handle),
+				strerror(errno));
 			/* removing non-existent even is an expected condition
 			 * in some circumstances (e.g. oneshot events).
 			 */
@@ -365,17 +398,18 @@  rte_intr_enable(const struct rte_intr_handle *intr_handle)
 	if (intr_handle == NULL)
 		return -1;
 
-	if (intr_handle->type == RTE_INTR_HANDLE_VDEV) {
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV) {
 		rc = 0;
 		goto out;
 	}
 
-	if (intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0) {
+	if (rte_intr_fd_get(intr_handle) < 0 ||
+				rte_intr_dev_fd_get(intr_handle) < 0) {
 		rc = -1;
 		goto out;
 	}
 
-	switch (intr_handle->type) {
+	switch (rte_intr_type_get(intr_handle)) {
 	/* not used at this moment */
 	case RTE_INTR_HANDLE_ALARM:
 		rc = -1;
@@ -388,7 +422,7 @@  rte_intr_enable(const struct rte_intr_handle *intr_handle)
 	default:
 		RTE_LOG(ERR, EAL,
 			"Unknown handle type of fd %d\n",
-					intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		rc = -1;
 		break;
 	}
@@ -406,17 +440,18 @@  rte_intr_disable(const struct rte_intr_handle *intr_handle)
 	if (intr_handle == NULL)
 		return -1;
 
-	if (intr_handle->type == RTE_INTR_HANDLE_VDEV) {
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV) {
 		rc = 0;
 		goto out;
 	}
 
-	if (intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0) {
+	if (rte_intr_fd_get(intr_handle) < 0 ||
+				rte_intr_dev_fd_get(intr_handle) < 0) {
 		rc = -1;
 		goto out;
 	}
 
-	switch (intr_handle->type) {
+	switch (rte_intr_type_get(intr_handle)) {
 	/* not used at this moment */
 	case RTE_INTR_HANDLE_ALARM:
 		rc = -1;
@@ -429,7 +464,7 @@  rte_intr_disable(const struct rte_intr_handle *intr_handle)
 	default:
 		RTE_LOG(ERR, EAL,
 			"Unknown handle type of fd %d\n",
-					intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		rc = -1;
 		break;
 	}
@@ -441,7 +476,8 @@  rte_intr_disable(const struct rte_intr_handle *intr_handle)
 int
 rte_intr_ack(const struct rte_intr_handle *intr_handle)
 {
-	if (intr_handle && intr_handle->type == RTE_INTR_HANDLE_VDEV)
+	if (intr_handle &&
+	    rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV)
 		return 0;
 
 	return -1;
@@ -463,7 +499,8 @@  eal_intr_process_interrupts(struct kevent *events, int nfds)
 
 		rte_spinlock_lock(&intr_lock);
 		TAILQ_FOREACH(src, &intr_sources, next)
-			if (src->intr_handle.fd == event_fd)
+			if (rte_intr_fd_get(src->intr_handle) ==
+								event_fd)
 				break;
 		if (src == NULL) {
 			rte_spinlock_unlock(&intr_lock);
@@ -475,7 +512,7 @@  eal_intr_process_interrupts(struct kevent *events, int nfds)
 		rte_spinlock_unlock(&intr_lock);
 
 		/* set the length to be read dor different handle type */
-		switch (src->intr_handle.type) {
+		switch (rte_intr_type_get(src->intr_handle)) {
 		case RTE_INTR_HANDLE_ALARM:
 			bytes_read = 0;
 			call = true;
@@ -546,7 +583,8 @@  eal_intr_process_interrupts(struct kevent *events, int nfds)
 				/* mark for deletion from the queue */
 				ke.flags = EV_DELETE;
 
-				if (intr_source_to_kevent(&src->intr_handle, &ke) < 0) {
+				if (intr_source_to_kevent(src->intr_handle,
+							  &ke) < 0) {
 					RTE_LOG(ERR, EAL, "Cannot convert to kevent\n");
 					rte_spinlock_unlock(&intr_lock);
 					return;
@@ -557,7 +595,9 @@  eal_intr_process_interrupts(struct kevent *events, int nfds)
 				 */
 				if (kevent(kq, &ke, 1, NULL, 0, NULL) < 0) {
 					RTE_LOG(ERR, EAL, "Error removing fd %d kevent, "
-						"%s\n", src->intr_handle.fd,
+						"%s\n",
+						rte_intr_fd_get(
+							src->intr_handle),
 						strerror(errno));
 					/* removing non-existent even is an expected
 					 * condition in some circumstances
@@ -567,7 +607,8 @@  eal_intr_process_interrupts(struct kevent *events, int nfds)
 
 				TAILQ_REMOVE(&src->callbacks, cb, next);
 				if (cb->ucb_fn)
-					cb->ucb_fn(&src->intr_handle, cb->cb_arg);
+					cb->ucb_fn(src->intr_handle,
+						   cb->cb_arg);
 				free(cb);
 			}
 		}
diff --git a/lib/eal/include/rte_interrupts.h b/lib/eal/include/rte_interrupts.h
index db830907fb..442b02de8f 100644
--- a/lib/eal/include/rte_interrupts.h
+++ b/lib/eal/include/rte_interrupts.h
@@ -28,6 +28,8 @@  struct rte_intr_handle;
 /** Interrupt instance allocation flags
  * @see rte_intr_instance_alloc
  */
+/** Allocate interrupt instance from traditional heap */
+#define RTE_INTR_ALLOC_TRAD_HEAP	0x00000000
 /** Allocate interrupt instance using DPDK memory management APIs */
 #define RTE_INTR_ALLOC_DPDK_ALLOCATOR	0x00000001
 
diff --git a/lib/eal/linux/eal_interrupts.c b/lib/eal/linux/eal_interrupts.c
index 22b3b7bcd9..a9d6833b79 100644
--- a/lib/eal/linux/eal_interrupts.c
+++ b/lib/eal/linux/eal_interrupts.c
@@ -20,6 +20,7 @@ 
 #include <stdbool.h>
 
 #include <rte_common.h>
+#include <rte_epoll.h>
 #include <rte_interrupts.h>
 #include <rte_memory.h>
 #include <rte_launch.h>
@@ -82,7 +83,7 @@  struct rte_intr_callback {
 
 struct rte_intr_source {
 	TAILQ_ENTRY(rte_intr_source) next;
-	struct rte_intr_handle intr_handle; /**< interrupt handle */
+	struct rte_intr_handle *intr_handle; /**< interrupt handle */
 	struct rte_intr_cb_list callbacks;  /**< user callbacks */
 	uint32_t active;
 };
@@ -112,7 +113,7 @@  static int
 vfio_enable_intx(const struct rte_intr_handle *intr_handle) {
 	struct vfio_irq_set *irq_set;
 	char irq_set_buf[IRQ_SET_BUF_LEN];
-	int len, ret;
+	int len, ret, vfio_dev_fd;
 	int *fd_ptr;
 
 	len = sizeof(irq_set_buf);
@@ -125,13 +126,14 @@  vfio_enable_intx(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_INTX_IRQ_INDEX;
 	irq_set->start = 0;
 	fd_ptr = (int *) &irq_set->data;
-	*fd_ptr = intr_handle->fd;
+	*fd_ptr = rte_intr_fd_get(intr_handle);
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL, "Error enabling INTx interrupts for fd %d\n",
-						intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 
@@ -144,11 +146,11 @@  vfio_enable_intx(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_INTX_IRQ_INDEX;
 	irq_set->start = 0;
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL, "Error unmasking INTx interrupts for fd %d\n",
-						intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 	return 0;
@@ -159,7 +161,7 @@  static int
 vfio_disable_intx(const struct rte_intr_handle *intr_handle) {
 	struct vfio_irq_set *irq_set;
 	char irq_set_buf[IRQ_SET_BUF_LEN];
-	int len, ret;
+	int len, ret, vfio_dev_fd;
 
 	len = sizeof(struct vfio_irq_set);
 
@@ -171,11 +173,12 @@  vfio_disable_intx(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_INTX_IRQ_INDEX;
 	irq_set->start = 0;
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL, "Error masking INTx interrupts for fd %d\n",
-						intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 
@@ -187,11 +190,12 @@  vfio_disable_intx(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_INTX_IRQ_INDEX;
 	irq_set->start = 0;
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL,
-			"Error disabling INTx interrupts for fd %d\n", intr_handle->fd);
+			"Error disabling INTx interrupts for fd %d\n",
+			rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 	return 0;
@@ -202,6 +206,7 @@  static int
 vfio_ack_intx(const struct rte_intr_handle *intr_handle)
 {
 	struct vfio_irq_set irq_set;
+	int vfio_dev_fd;
 
 	/* unmask INTx */
 	memset(&irq_set, 0, sizeof(irq_set));
@@ -211,9 +216,10 @@  vfio_ack_intx(const struct rte_intr_handle *intr_handle)
 	irq_set.index = VFIO_PCI_INTX_IRQ_INDEX;
 	irq_set.start = 0;
 
-	if (ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, &irq_set)) {
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	if (ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, &irq_set)) {
 		RTE_LOG(ERR, EAL, "Error unmasking INTx interrupts for fd %d\n",
-			intr_handle->fd);
+			rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 	return 0;
@@ -225,7 +231,7 @@  vfio_enable_msi(const struct rte_intr_handle *intr_handle) {
 	int len, ret;
 	char irq_set_buf[IRQ_SET_BUF_LEN];
 	struct vfio_irq_set *irq_set;
-	int *fd_ptr;
+	int *fd_ptr, vfio_dev_fd;
 
 	len = sizeof(irq_set_buf);
 
@@ -236,13 +242,14 @@  vfio_enable_msi(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_MSI_IRQ_INDEX;
 	irq_set->start = 0;
 	fd_ptr = (int *) &irq_set->data;
-	*fd_ptr = intr_handle->fd;
+	*fd_ptr = rte_intr_fd_get(intr_handle);
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL, "Error enabling MSI interrupts for fd %d\n",
-						intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 	return 0;
@@ -253,7 +260,7 @@  static int
 vfio_disable_msi(const struct rte_intr_handle *intr_handle) {
 	struct vfio_irq_set *irq_set;
 	char irq_set_buf[IRQ_SET_BUF_LEN];
-	int len, ret;
+	int len, ret, vfio_dev_fd;
 
 	len = sizeof(struct vfio_irq_set);
 
@@ -264,11 +271,13 @@  vfio_disable_msi(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_MSI_IRQ_INDEX;
 	irq_set->start = 0;
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret)
 		RTE_LOG(ERR, EAL,
-			"Error disabling MSI interrupts for fd %d\n", intr_handle->fd);
+			"Error disabling MSI interrupts for fd %d\n",
+			rte_intr_fd_get(intr_handle));
 
 	return ret;
 }
@@ -279,30 +288,34 @@  vfio_enable_msix(const struct rte_intr_handle *intr_handle) {
 	int len, ret;
 	char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];
 	struct vfio_irq_set *irq_set;
-	int *fd_ptr;
+	int *fd_ptr, vfio_dev_fd, i;
 
 	len = sizeof(irq_set_buf);
 
 	irq_set = (struct vfio_irq_set *) irq_set_buf;
 	irq_set->argsz = len;
 	/* 0 < irq_set->count < RTE_MAX_RXTX_INTR_VEC_ID + 1 */
-	irq_set->count = intr_handle->max_intr ?
-		(intr_handle->max_intr > RTE_MAX_RXTX_INTR_VEC_ID + 1 ?
-		RTE_MAX_RXTX_INTR_VEC_ID + 1 : intr_handle->max_intr) : 1;
+	irq_set->count = rte_intr_max_intr_get(intr_handle) ?
+		(rte_intr_max_intr_get(intr_handle) >
+		 RTE_MAX_RXTX_INTR_VEC_ID + 1 ?	RTE_MAX_RXTX_INTR_VEC_ID + 1 :
+		 rte_intr_max_intr_get(intr_handle)) : 1;
+
 	irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
 	irq_set->index = VFIO_PCI_MSIX_IRQ_INDEX;
 	irq_set->start = 0;
 	fd_ptr = (int *) &irq_set->data;
 	/* INTR vector offset 0 reserve for non-efds mapping */
-	fd_ptr[RTE_INTR_VEC_ZERO_OFFSET] = intr_handle->fd;
-	memcpy(&fd_ptr[RTE_INTR_VEC_RXTX_OFFSET], intr_handle->efds,
-		sizeof(*intr_handle->efds) * intr_handle->nb_efd);
+	fd_ptr[RTE_INTR_VEC_ZERO_OFFSET] = rte_intr_fd_get(intr_handle);
+	for (i = 0; i < rte_intr_nb_efd_get(intr_handle); i++)
+		fd_ptr[RTE_INTR_VEC_RXTX_OFFSET + i] =
+			rte_intr_efds_index_get(intr_handle, i);
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL, "Error enabling MSI-X interrupts for fd %d\n",
-						intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 
@@ -314,7 +327,7 @@  static int
 vfio_disable_msix(const struct rte_intr_handle *intr_handle) {
 	struct vfio_irq_set *irq_set;
 	char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];
-	int len, ret;
+	int len, ret, vfio_dev_fd;
 
 	len = sizeof(struct vfio_irq_set);
 
@@ -325,11 +338,13 @@  vfio_disable_msix(const struct rte_intr_handle *intr_handle) {
 	irq_set->index = VFIO_PCI_MSIX_IRQ_INDEX;
 	irq_set->start = 0;
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret)
 		RTE_LOG(ERR, EAL,
-			"Error disabling MSI-X interrupts for fd %d\n", intr_handle->fd);
+			"Error disabling MSI-X interrupts for fd %d\n",
+			rte_intr_fd_get(intr_handle));
 
 	return ret;
 }
@@ -342,7 +357,7 @@  vfio_enable_req(const struct rte_intr_handle *intr_handle)
 	int len, ret;
 	char irq_set_buf[IRQ_SET_BUF_LEN];
 	struct vfio_irq_set *irq_set;
-	int *fd_ptr;
+	int *fd_ptr, vfio_dev_fd;
 
 	len = sizeof(irq_set_buf);
 
@@ -354,13 +369,14 @@  vfio_enable_req(const struct rte_intr_handle *intr_handle)
 	irq_set->index = VFIO_PCI_REQ_IRQ_INDEX;
 	irq_set->start = 0;
 	fd_ptr = (int *) &irq_set->data;
-	*fd_ptr = intr_handle->fd;
+	*fd_ptr = rte_intr_fd_get(intr_handle);
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret) {
 		RTE_LOG(ERR, EAL, "Error enabling req interrupts for fd %d\n",
-						intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 
@@ -373,7 +389,7 @@  vfio_disable_req(const struct rte_intr_handle *intr_handle)
 {
 	struct vfio_irq_set *irq_set;
 	char irq_set_buf[IRQ_SET_BUF_LEN];
-	int len, ret;
+	int len, ret, vfio_dev_fd;
 
 	len = sizeof(struct vfio_irq_set);
 
@@ -384,11 +400,12 @@  vfio_disable_req(const struct rte_intr_handle *intr_handle)
 	irq_set->index = VFIO_PCI_REQ_IRQ_INDEX;
 	irq_set->start = 0;
 
-	ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+	vfio_dev_fd = rte_intr_dev_fd_get(intr_handle);
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 
 	if (ret)
 		RTE_LOG(ERR, EAL, "Error disabling req interrupts for fd %d\n",
-			intr_handle->fd);
+			rte_intr_fd_get(intr_handle));
 
 	return ret;
 }
@@ -399,20 +416,22 @@  static int
 uio_intx_intr_disable(const struct rte_intr_handle *intr_handle)
 {
 	unsigned char command_high;
+	int uio_cfg_fd;
 
 	/* use UIO config file descriptor for uio_pci_generic */
-	if (pread(intr_handle->uio_cfg_fd, &command_high, 1, 5) != 1) {
+	uio_cfg_fd = rte_intr_dev_fd_get(intr_handle);
+	if (pread(uio_cfg_fd, &command_high, 1, 5) != 1) {
 		RTE_LOG(ERR, EAL,
 			"Error reading interrupts status for fd %d\n",
-			intr_handle->uio_cfg_fd);
+			uio_cfg_fd);
 		return -1;
 	}
 	/* disable interrupts */
 	command_high |= 0x4;
-	if (pwrite(intr_handle->uio_cfg_fd, &command_high, 1, 5) != 1) {
+	if (pwrite(uio_cfg_fd, &command_high, 1, 5) != 1) {
 		RTE_LOG(ERR, EAL,
 			"Error disabling interrupts for fd %d\n",
-			intr_handle->uio_cfg_fd);
+			uio_cfg_fd);
 		return -1;
 	}
 
@@ -423,20 +442,22 @@  static int
 uio_intx_intr_enable(const struct rte_intr_handle *intr_handle)
 {
 	unsigned char command_high;
+	int uio_cfg_fd;
 
 	/* use UIO config file descriptor for uio_pci_generic */
-	if (pread(intr_handle->uio_cfg_fd, &command_high, 1, 5) != 1) {
+	uio_cfg_fd = rte_intr_dev_fd_get(intr_handle);
+	if (pread(uio_cfg_fd, &command_high, 1, 5) != 1) {
 		RTE_LOG(ERR, EAL,
 			"Error reading interrupts status for fd %d\n",
-			intr_handle->uio_cfg_fd);
+			uio_cfg_fd);
 		return -1;
 	}
 	/* enable interrupts */
 	command_high &= ~0x4;
-	if (pwrite(intr_handle->uio_cfg_fd, &command_high, 1, 5) != 1) {
+	if (pwrite(uio_cfg_fd, &command_high, 1, 5) != 1) {
 		RTE_LOG(ERR, EAL,
 			"Error enabling interrupts for fd %d\n",
-			intr_handle->uio_cfg_fd);
+			uio_cfg_fd);
 		return -1;
 	}
 
@@ -448,10 +469,11 @@  uio_intr_disable(const struct rte_intr_handle *intr_handle)
 {
 	const int value = 0;
 
-	if (write(intr_handle->fd, &value, sizeof(value)) < 0) {
+	if (write(rte_intr_fd_get(intr_handle), &value,
+		  sizeof(value)) < 0) {
 		RTE_LOG(ERR, EAL,
 			"Error disabling interrupts for fd %d (%s)\n",
-			intr_handle->fd, strerror(errno));
+			rte_intr_fd_get(intr_handle), strerror(errno));
 		return -1;
 	}
 	return 0;
@@ -462,10 +484,11 @@  uio_intr_enable(const struct rte_intr_handle *intr_handle)
 {
 	const int value = 1;
 
-	if (write(intr_handle->fd, &value, sizeof(value)) < 0) {
+	if (write(rte_intr_fd_get(intr_handle), &value,
+		  sizeof(value)) < 0) {
 		RTE_LOG(ERR, EAL,
 			"Error enabling interrupts for fd %d (%s)\n",
-			intr_handle->fd, strerror(errno));
+			rte_intr_fd_get(intr_handle), strerror(errno));
 		return -1;
 	}
 	return 0;
@@ -475,14 +498,15 @@  int
 rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 			rte_intr_callback_fn cb, void *cb_arg)
 {
-	int ret, wake_thread;
+	int ret, wake_thread, mem_allocator;
 	struct rte_intr_source *src;
 	struct rte_intr_callback *callback;
 
 	wake_thread = 0;
 
 	/* first do parameter checking */
-	if (intr_handle == NULL || intr_handle->fd < 0 || cb == NULL) {
+	if (intr_handle == NULL || rte_intr_fd_get(intr_handle) < 0 ||
+	    cb == NULL) {
 		RTE_LOG(ERR, EAL,
 			"Registering with invalid input parameter\n");
 		return -EINVAL;
@@ -503,7 +527,8 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 
 	/* check if there is at least one callback registered for the fd */
 	TAILQ_FOREACH(src, &intr_sources, next) {
-		if (src->intr_handle.fd == intr_handle->fd) {
+		if (rte_intr_fd_get(src->intr_handle) ==
+					rte_intr_fd_get(intr_handle)) {
 			/* we had no interrupts for this */
 			if (TAILQ_EMPTY(&src->callbacks))
 				wake_thread = 1;
@@ -522,12 +547,34 @@  rte_intr_callback_register(const struct rte_intr_handle *intr_handle,
 			free(callback);
 			ret = -ENOMEM;
 		} else {
-			src->intr_handle = *intr_handle;
-			TAILQ_INIT(&src->callbacks);
-			TAILQ_INSERT_TAIL(&(src->callbacks), callback, next);
-			TAILQ_INSERT_TAIL(&intr_sources, src, next);
-			wake_thread = 1;
-			ret = 0;
+			/* src->interrupt instance memory allocated depends on
+			 * from where intr_handle memory is allocated.
+			 */
+			mem_allocator =
+			rte_intr_instance_mem_allocator_get(intr_handle);
+			if (mem_allocator == 0)
+				src->intr_handle = rte_intr_instance_alloc(
+						RTE_INTR_ALLOC_TRAD_HEAP);
+			else if (mem_allocator == 1)
+				src->intr_handle = rte_intr_instance_alloc(
+						RTE_INTR_ALLOC_DPDK_ALLOCATOR);
+			else
+				RTE_LOG(ERR, EAL, "Failed to get mem allocator\n");
+
+			if (src->intr_handle == NULL) {
+				RTE_LOG(ERR, EAL, "Can not create intr instance\n");
+				free(callback);
+				ret = -ENOMEM;
+			} else {
+				rte_intr_instance_copy(src->intr_handle,
+						       intr_handle);
+				TAILQ_INIT(&src->callbacks);
+				TAILQ_INSERT_TAIL(&(src->callbacks), callback,
+						  next);
+				TAILQ_INSERT_TAIL(&intr_sources, src, next);
+				wake_thread = 1;
+				ret = 0;
+			}
 		}
 	}
 
@@ -555,7 +602,7 @@  rte_intr_callback_unregister_pending(const struct rte_intr_handle *intr_handle,
 	struct rte_intr_callback *cb, *next;
 
 	/* do parameter checking first */
-	if (intr_handle == NULL || intr_handle->fd < 0) {
+	if (intr_handle == NULL || rte_intr_fd_get(intr_handle) < 0) {
 		RTE_LOG(ERR, EAL,
 		"Unregistering with invalid input parameter\n");
 		return -EINVAL;
@@ -565,7 +612,8 @@  rte_intr_callback_unregister_pending(const struct rte_intr_handle *intr_handle,
 
 	/* check if the insterrupt source for the fd is existent */
 	TAILQ_FOREACH(src, &intr_sources, next)
-		if (src->intr_handle.fd == intr_handle->fd)
+		if (rte_intr_fd_get(src->intr_handle) ==
+					rte_intr_fd_get(intr_handle))
 			break;
 
 	/* No interrupt source registered for the fd */
@@ -605,7 +653,7 @@  rte_intr_callback_unregister(const struct rte_intr_handle *intr_handle,
 	struct rte_intr_callback *cb, *next;
 
 	/* do parameter checking first */
-	if (intr_handle == NULL || intr_handle->fd < 0) {
+	if (intr_handle == NULL || rte_intr_fd_get(intr_handle) < 0) {
 		RTE_LOG(ERR, EAL,
 		"Unregistering with invalid input parameter\n");
 		return -EINVAL;
@@ -615,7 +663,8 @@  rte_intr_callback_unregister(const struct rte_intr_handle *intr_handle,
 
 	/* check if the insterrupt source for the fd is existent */
 	TAILQ_FOREACH(src, &intr_sources, next)
-		if (src->intr_handle.fd == intr_handle->fd)
+		if (rte_intr_fd_get(src->intr_handle) ==
+					rte_intr_fd_get(intr_handle))
 			break;
 
 	/* No interrupt source registered for the fd */
@@ -646,6 +695,7 @@  rte_intr_callback_unregister(const struct rte_intr_handle *intr_handle,
 		/* all callbacks for that source are removed. */
 		if (TAILQ_EMPTY(&src->callbacks)) {
 			TAILQ_REMOVE(&intr_sources, src, next);
+			rte_intr_instance_free(src->intr_handle);
 			free(src);
 		}
 	}
@@ -677,22 +727,23 @@  rte_intr_callback_unregister_sync(const struct rte_intr_handle *intr_handle,
 int
 rte_intr_enable(const struct rte_intr_handle *intr_handle)
 {
-	int rc = 0;
+	int rc = 0, uio_cfg_fd;
 
 	if (intr_handle == NULL)
 		return -1;
 
-	if (intr_handle->type == RTE_INTR_HANDLE_VDEV) {
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV) {
 		rc = 0;
 		goto out;
 	}
 
-	if (intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0) {
+	uio_cfg_fd = rte_intr_dev_fd_get(intr_handle);
+	if (rte_intr_fd_get(intr_handle) < 0 || uio_cfg_fd < 0) {
 		rc = -1;
 		goto out;
 	}
 
-	switch (intr_handle->type){
+	switch (rte_intr_type_get(intr_handle)) {
 	/* write to the uio fd to enable the interrupt */
 	case RTE_INTR_HANDLE_UIO:
 		if (uio_intr_enable(intr_handle))
@@ -734,7 +785,7 @@  rte_intr_enable(const struct rte_intr_handle *intr_handle)
 	default:
 		RTE_LOG(ERR, EAL,
 			"Unknown handle type of fd %d\n",
-					intr_handle->fd);
+					rte_intr_fd_get(intr_handle));
 		rc = -1;
 		break;
 	}
@@ -757,13 +808,17 @@  rte_intr_enable(const struct rte_intr_handle *intr_handle)
 int
 rte_intr_ack(const struct rte_intr_handle *intr_handle)
 {
-	if (intr_handle && intr_handle->type == RTE_INTR_HANDLE_VDEV)
+	int uio_cfg_fd;
+
+	if (intr_handle && rte_intr_type_get(intr_handle) ==
+							RTE_INTR_HANDLE_VDEV)
 		return 0;
 
-	if (!intr_handle || intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0)
+	uio_cfg_fd = rte_intr_dev_fd_get(intr_handle);
+	if (!intr_handle || rte_intr_fd_get(intr_handle) < 0 || uio_cfg_fd < 0)
 		return -1;
 
-	switch (intr_handle->type) {
+	switch (rte_intr_type_get(intr_handle)) {
 	/* Both acking and enabling are same for UIO */
 	case RTE_INTR_HANDLE_UIO:
 		if (uio_intr_enable(intr_handle))
@@ -796,7 +851,7 @@  rte_intr_ack(const struct rte_intr_handle *intr_handle)
 	/* unknown handle type */
 	default:
 		RTE_LOG(ERR, EAL, "Unknown handle type of fd %d\n",
-			intr_handle->fd);
+			rte_intr_fd_get(intr_handle));
 		return -1;
 	}
 
@@ -806,22 +861,23 @@  rte_intr_ack(const struct rte_intr_handle *intr_handle)
 int
 rte_intr_disable(const struct rte_intr_handle *intr_handle)
 {
-	int rc = 0;
+	int rc = 0, uio_cfg_fd;
 
 	if (intr_handle == NULL)
 		return -1;
 
-	if (intr_handle->type == RTE_INTR_HANDLE_VDEV) {
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV) {
 		rc = 0;
 		goto out;
 	}
 
-	if (intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0) {
+	uio_cfg_fd = rte_intr_dev_fd_get(intr_handle);
+	if (rte_intr_fd_get(intr_handle) < 0 || uio_cfg_fd < 0) {
 		rc = -1;
 		goto out;
 	}
 
-	switch (intr_handle->type){
+	switch (rte_intr_type_get(intr_handle)) {
 	/* write to the uio fd to disable the interrupt */
 	case RTE_INTR_HANDLE_UIO:
 		if (uio_intr_disable(intr_handle))
@@ -863,7 +919,7 @@  rte_intr_disable(const struct rte_intr_handle *intr_handle)
 	default:
 		RTE_LOG(ERR, EAL,
 			"Unknown handle type of fd %d\n",
-					intr_handle->fd);
+			rte_intr_fd_get(intr_handle));
 		rc = -1;
 		break;
 	}
@@ -896,7 +952,7 @@  eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 		}
 		rte_spinlock_lock(&intr_lock);
 		TAILQ_FOREACH(src, &intr_sources, next)
-			if (src->intr_handle.fd ==
+			if (rte_intr_fd_get(src->intr_handle) ==
 					events[n].data.fd)
 				break;
 		if (src == NULL){
@@ -909,7 +965,7 @@  eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 		rte_spinlock_unlock(&intr_lock);
 
 		/* set the length to be read dor different handle type */
-		switch (src->intr_handle.type) {
+		switch (rte_intr_type_get(src->intr_handle)) {
 		case RTE_INTR_HANDLE_UIO:
 		case RTE_INTR_HANDLE_UIO_INTX:
 			bytes_read = sizeof(buf.uio_intr_count);
@@ -973,6 +1029,7 @@  eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 					TAILQ_REMOVE(&src->callbacks, cb, next);
 					free(cb);
 				}
+				rte_intr_instance_free(src->intr_handle);
 				free(src);
 				return -1;
 			} else if (bytes_read == 0)
@@ -1012,7 +1069,8 @@  eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 			if (cb->pending_delete) {
 				TAILQ_REMOVE(&src->callbacks, cb, next);
 				if (cb->ucb_fn)
-					cb->ucb_fn(&src->intr_handle, cb->cb_arg);
+					cb->ucb_fn(src->intr_handle,
+						   cb->cb_arg);
 				free(cb);
 				rv++;
 			}
@@ -1021,6 +1079,7 @@  eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 		/* all callbacks for that source are removed. */
 		if (TAILQ_EMPTY(&src->callbacks)) {
 			TAILQ_REMOVE(&intr_sources, src, next);
+			rte_intr_instance_free(src->intr_handle);
 			free(src);
 		}
 
@@ -1123,16 +1182,18 @@  eal_intr_thread_main(__rte_unused void *arg)
 				continue; /* skip those with no callbacks */
 			memset(&ev, 0, sizeof(ev));
 			ev.events = EPOLLIN | EPOLLPRI | EPOLLRDHUP | EPOLLHUP;
-			ev.data.fd = src->intr_handle.fd;
+			ev.data.fd = rte_intr_fd_get(src->intr_handle);
 
 			/**
 			 * add all the uio device file descriptor
 			 * into wait list.
 			 */
 			if (epoll_ctl(pfd, EPOLL_CTL_ADD,
-					src->intr_handle.fd, &ev) < 0){
+				rte_intr_fd_get(src->intr_handle),
+								&ev) < 0) {
 				rte_panic("Error adding fd %d epoll_ctl, %s\n",
-					src->intr_handle.fd, strerror(errno));
+				rte_intr_fd_get(src->intr_handle),
+				strerror(errno));
 			}
 			else
 				numfds++;
@@ -1185,7 +1246,7 @@  eal_intr_proc_rxtx_intr(int fd, const struct rte_intr_handle *intr_handle)
 	int bytes_read = 0;
 	int nbytes;
 
-	switch (intr_handle->type) {
+	switch (rte_intr_type_get(intr_handle)) {
 	case RTE_INTR_HANDLE_UIO:
 	case RTE_INTR_HANDLE_UIO_INTX:
 		bytes_read = sizeof(buf.uio_intr_count);
@@ -1198,7 +1259,7 @@  eal_intr_proc_rxtx_intr(int fd, const struct rte_intr_handle *intr_handle)
 		break;
 #endif
 	case RTE_INTR_HANDLE_VDEV:
-		bytes_read = intr_handle->efd_counter_size;
+		bytes_read = rte_intr_efd_counter_size_get(intr_handle);
 		/* For vdev, number of bytes to read is set by driver */
 		break;
 	case RTE_INTR_HANDLE_EXT:
@@ -1419,8 +1480,8 @@  rte_intr_rx_ctl(struct rte_intr_handle *intr_handle, int epfd,
 	efd_idx = (vec >= RTE_INTR_VEC_RXTX_OFFSET) ?
 		(vec - RTE_INTR_VEC_RXTX_OFFSET) : vec;
 
-	if (!intr_handle || intr_handle->nb_efd == 0 ||
-	    efd_idx >= intr_handle->nb_efd) {
+	if (!intr_handle || rte_intr_nb_efd_get(intr_handle) == 0 ||
+	    efd_idx >= (unsigned int)rte_intr_nb_efd_get(intr_handle)) {
 		RTE_LOG(ERR, EAL, "Wrong intr vector number.\n");
 		return -EPERM;
 	}
@@ -1428,7 +1489,7 @@  rte_intr_rx_ctl(struct rte_intr_handle *intr_handle, int epfd,
 	switch (op) {
 	case RTE_INTR_EVENT_ADD:
 		epfd_op = EPOLL_CTL_ADD;
-		rev = &intr_handle->elist[efd_idx];
+		rev = rte_intr_elist_index_get(intr_handle, efd_idx);
 		if (__atomic_load_n(&rev->status,
 				__ATOMIC_RELAXED) != RTE_EPOLL_INVALID) {
 			RTE_LOG(INFO, EAL, "Event already been added.\n");
@@ -1442,7 +1503,9 @@  rte_intr_rx_ctl(struct rte_intr_handle *intr_handle, int epfd,
 		epdata->cb_fun = (rte_intr_event_cb_t)eal_intr_proc_rxtx_intr;
 		epdata->cb_arg = (void *)intr_handle;
 		rc = rte_epoll_ctl(epfd, epfd_op,
-				   intr_handle->efds[efd_idx], rev);
+				   rte_intr_efds_index_get(intr_handle,
+								  efd_idx),
+				   rev);
 		if (!rc)
 			RTE_LOG(DEBUG, EAL,
 				"efd %d associated with vec %d added on epfd %d"
@@ -1452,7 +1515,7 @@  rte_intr_rx_ctl(struct rte_intr_handle *intr_handle, int epfd,
 		break;
 	case RTE_INTR_EVENT_DEL:
 		epfd_op = EPOLL_CTL_DEL;
-		rev = &intr_handle->elist[efd_idx];
+		rev = rte_intr_elist_index_get(intr_handle, efd_idx);
 		if (__atomic_load_n(&rev->status,
 				__ATOMIC_RELAXED) == RTE_EPOLL_INVALID) {
 			RTE_LOG(INFO, EAL, "Event does not exist.\n");
@@ -1477,8 +1540,9 @@  rte_intr_free_epoll_fd(struct rte_intr_handle *intr_handle)
 	uint32_t i;
 	struct rte_epoll_event *rev;
 
-	for (i = 0; i < intr_handle->nb_efd; i++) {
-		rev = &intr_handle->elist[i];
+	for (i = 0; i < (uint32_t)rte_intr_nb_efd_get(intr_handle);
+									i++) {
+		rev = rte_intr_elist_index_get(intr_handle, i);
 		if (__atomic_load_n(&rev->status,
 				__ATOMIC_RELAXED) == RTE_EPOLL_INVALID)
 			continue;
@@ -1498,7 +1562,7 @@  rte_intr_efd_enable(struct rte_intr_handle *intr_handle, uint32_t nb_efd)
 
 	assert(nb_efd != 0);
 
-	if (intr_handle->type == RTE_INTR_HANDLE_VFIO_MSIX) {
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VFIO_MSIX) {
 		for (i = 0; i < n; i++) {
 			fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
 			if (fd < 0) {
@@ -1507,21 +1571,32 @@  rte_intr_efd_enable(struct rte_intr_handle *intr_handle, uint32_t nb_efd)
 					errno, strerror(errno));
 				return -errno;
 			}
-			intr_handle->efds[i] = fd;
+
+			if (rte_intr_efds_index_set(intr_handle, i, fd))
+				return -rte_errno;
 		}
-		intr_handle->nb_efd   = n;
-		intr_handle->max_intr = NB_OTHER_INTR + n;
-	} else if (intr_handle->type == RTE_INTR_HANDLE_VDEV) {
+
+		if (rte_intr_nb_efd_set(intr_handle, n))
+			return -rte_errno;
+
+		if (rte_intr_max_intr_set(intr_handle, NB_OTHER_INTR + n))
+			return -rte_errno;
+	} else if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV) {
 		/* only check, initialization would be done in vdev driver.*/
-		if (intr_handle->efd_counter_size >
+		if ((uint64_t)rte_intr_efd_counter_size_get(intr_handle) >
 		    sizeof(union rte_intr_read_buffer)) {
 			RTE_LOG(ERR, EAL, "the efd_counter_size is oversized");
 			return -EINVAL;
 		}
 	} else {
-		intr_handle->efds[0]  = intr_handle->fd;
-		intr_handle->nb_efd   = RTE_MIN(nb_efd, 1U);
-		intr_handle->max_intr = NB_OTHER_INTR;
+		if (rte_intr_efds_index_set(intr_handle, 0,
+					    rte_intr_fd_get(intr_handle)))
+			return -rte_errno;
+		if (rte_intr_nb_efd_set(intr_handle,
+					RTE_MIN(nb_efd, 1U)))
+			return -rte_errno;
+		if (rte_intr_max_intr_set(intr_handle, NB_OTHER_INTR))
+			return -rte_errno;
 	}
 
 	return 0;
@@ -1533,18 +1608,20 @@  rte_intr_efd_disable(struct rte_intr_handle *intr_handle)
 	uint32_t i;
 
 	rte_intr_free_epoll_fd(intr_handle);
-	if (intr_handle->max_intr > intr_handle->nb_efd) {
-		for (i = 0; i < intr_handle->nb_efd; i++)
-			close(intr_handle->efds[i]);
+	if (rte_intr_max_intr_get(intr_handle) >
+				rte_intr_nb_efd_get(intr_handle)) {
+		for (i = 0; i <
+			(uint32_t)rte_intr_nb_efd_get(intr_handle); i++)
+			close(rte_intr_efds_index_get(intr_handle, i));
 	}
-	intr_handle->nb_efd = 0;
-	intr_handle->max_intr = 0;
+	rte_intr_nb_efd_set(intr_handle, 0);
+	rte_intr_max_intr_set(intr_handle, 0);
 }
 
 int
 rte_intr_dp_is_en(struct rte_intr_handle *intr_handle)
 {
-	return !(!intr_handle->nb_efd);
+	return !(!rte_intr_nb_efd_get(intr_handle));
 }
 
 int
@@ -1553,16 +1630,17 @@  rte_intr_allow_others(struct rte_intr_handle *intr_handle)
 	if (!rte_intr_dp_is_en(intr_handle))
 		return 1;
 	else
-		return !!(intr_handle->max_intr - intr_handle->nb_efd);
+		return !!(rte_intr_max_intr_get(intr_handle) -
+				rte_intr_nb_efd_get(intr_handle));
 }
 
 int
 rte_intr_cap_multiple(struct rte_intr_handle *intr_handle)
 {
-	if (intr_handle->type == RTE_INTR_HANDLE_VFIO_MSIX)
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VFIO_MSIX)
 		return 1;
 
-	if (intr_handle->type == RTE_INTR_HANDLE_VDEV)
+	if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_VDEV)
 		return 1;
 
 	return 0;