diff --git a/lib/librte_eal/linuxapp/kni/compat.h b/lib/librte_eal/linuxapp/kni/compat.h
index d10040d..647ba3c 100644
--- a/lib/librte_eal/linuxapp/kni/compat.h
+++ b/lib/librte_eal/linuxapp/kni/compat.h
@@ -14,16 +14,25 @@
 
 #endif /* < 2.6.39 */
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
+#define HAVE_SIMPLIFIED_PERNET_OPERATIONS
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
 #define sk_sleep(s) (s)->sk_sleep
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
+#define HAVE_CHANGE_CARRIER_CB
+#endif
+
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
 #define HAVE_IOV_ITER_MSGHDR
 #endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)
 #define HAVE_KIOCB_MSG_PARAM
+#define HAVE_REBUILD_HEADER
 #endif
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
diff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c b/lib/librte_eal/linuxapp/kni/kni_misc.c
index e1ec443..4f34232 100644
--- a/lib/librte_eal/linuxapp/kni/kni_misc.c
+++ b/lib/librte_eal/linuxapp/kni/kni_misc.c
@@ -35,6 +35,8 @@
 #include <net/netns/generic.h>
 
 #include <exec-env/rte_kni_common.h>
+
+#include "compat.h"
 #include "kni_dev.h"
 
 MODULE_LICENSE("Dual BSD/GPL");
@@ -105,7 +107,7 @@ struct kni_net {
 
 static int __net_init kni_init_net(struct net *net)
 {
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32)
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	struct kni_net *knet = net_generic(net, kni_net_id);
 #else
 	struct kni_net *knet;
@@ -116,7 +118,7 @@ static int __net_init kni_init_net(struct net *net)
 		ret = -ENOMEM;
 		return ret;
 	}
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 
 	/* Clear the bit of device in use */
 	clear_bit(KNI_DEV_IN_USE_BIT_NUM, &knet->device_in_use);
@@ -124,7 +126,7 @@ static int __net_init kni_init_net(struct net *net)
 	init_rwsem(&knet->kni_list_lock);
 	INIT_LIST_HEAD(&knet->kni_list_head);
 
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32)
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	return 0;
 #else
 	ret = net_assign_generic(net, kni_net_id, knet);
@@ -132,25 +134,25 @@ static int __net_init kni_init_net(struct net *net)
 		kfree(knet);
 
 	return ret;
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 }
 
 static void __net_exit kni_exit_net(struct net *net)
 {
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 32)
+#ifndef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	struct kni_net *knet = net_generic(net, kni_net_id);
 
 	kfree(knet);
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 }
 
 static struct pernet_operations kni_net_ops = {
 	.init = kni_init_net,
 	.exit = kni_exit_net,
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32)
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	.id   = &kni_net_id,
 	.size = sizeof(struct kni_net),
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 };
 
 static int __init
@@ -165,11 +167,11 @@ kni_init(void)
 		return -EINVAL;
 	}
 
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32)
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	rc = register_pernet_subsys(&kni_net_ops);
 #else
 	rc = register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 	if (rc)
 		return -EPERM;
 
@@ -187,11 +189,11 @@ kni_init(void)
 	return 0;
 
 out:
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32)
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	unregister_pernet_subsys(&kni_net_ops);
 #else
 	register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 	return rc;
 }
 
@@ -199,11 +201,11 @@ static void __exit
 kni_exit(void)
 {
 	misc_deregister(&kni_misc);
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32)
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
 	unregister_pernet_subsys(&kni_net_ops);
 #else
 	register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
-#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) */
+#endif
 	KNI_PRINT("####### DPDK kni module unloaded  #######\n");
 }
 
diff --git a/lib/librte_eal/linuxapp/kni/kni_net.c b/lib/librte_eal/linuxapp/kni/kni_net.c
index 076372c..fc82193 100644
--- a/lib/librte_eal/linuxapp/kni/kni_net.c
+++ b/lib/librte_eal/linuxapp/kni/kni_net.c
@@ -641,7 +641,7 @@ kni_net_header(struct sk_buff *skb, struct net_device *dev,
 /*
  * Re-fill the eth header
  */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0))
+#ifdef HAVE_REBUILD_HEADER
 static int
 kni_net_rebuild_header(struct sk_buff *skb)
 {
@@ -671,7 +671,7 @@ static int kni_net_set_mac(struct net_device *netdev, void *p)
 	return 0;
 }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0))
+#ifdef HAVE_CHANGE_CARRIER_CB
 static int kni_net_change_carrier(struct net_device *dev, bool new_carrier)
 {
 	if (new_carrier)
@@ -684,7 +684,7 @@ static int kni_net_change_carrier(struct net_device *dev, bool new_carrier)
 
 static const struct header_ops kni_net_header_ops = {
 	.create  = kni_net_header,
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0))
+#ifdef HAVE_REBUILD_HEADER
 	.rebuild = kni_net_rebuild_header,
 #endif /* < 4.1.0  */
 	.cache   = NULL,  /* disable caching */
@@ -701,7 +701,7 @@ static const struct net_device_ops kni_net_netdev_ops = {
 	.ndo_get_stats = kni_net_stats,
 	.ndo_tx_timeout = kni_net_tx_timeout,
 	.ndo_set_mac_address = kni_net_set_mac,
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0))
+#ifdef HAVE_CHANGE_CARRIER_CB
 	.ndo_change_carrier = kni_net_change_carrier,
 #endif
 };
