Imported Upstream version 17.05

11 files changed, 82 insertions, 970 deletions

diff --git a/lib/librte_eal/linuxapp/kni/Makefile b/lib/librte_eal/linuxapp/kni/Makefile
index 4e99e07e..154c528d 100644
--- a/lib/librte_eal/linuxapp/kni/Makefile
+++ b/lib/librte_eal/linuxapp/kni/Makefile
@@ -44,45 +44,43 @@ MODULE_CFLAGS += -I$(RTE_OUTPUT)/include -I$(SRCDIR)/ethtool/ixgbe -I$(SRCDIR)/e
 MODULE_CFLAGS += -include $(RTE_OUTPUT)/include/rte_config.h
 MODULE_CFLAGS += -Wall -Werror
 
-ifeq ($(shell lsb_release -si 2>/dev/null),Ubuntu)
-MODULE_CFLAGS += -DUBUNTU_RELEASE_CODE=$(shell lsb_release -sr | tr -d .)
+-include /etc/lsb-release
+
+ifeq ($(DISTRIB_ID),Ubuntu)
+MODULE_CFLAGS += -DUBUNTU_RELEASE_CODE=$(subst .,,$(DISTRIB_RELEASE))
 UBUNTU_KERNEL_CODE := $(shell echo `grep UTS_RELEASE $(RTE_KERNELDIR)/include/generated/utsrelease.h \
 	 | cut -d '"' -f2 | cut -d- -f1,2 | tr .- ,`,1)
 MODULE_CFLAGS += -D"UBUNTU_KERNEL_CODE=UBUNTU_KERNEL_VERSION($(UBUNTU_KERNEL_CODE))"
 endif
 
-# this lib needs main eal
-DEPDIRS-y += lib/librte_eal/linuxapp/eal
-
 #
 # all source are stored in SRCS-y
 #
-SRCS-y := ethtool/ixgbe/ixgbe_main.c
-SRCS-y += ethtool/ixgbe/ixgbe_api.c
-SRCS-y += ethtool/ixgbe/ixgbe_common.c
-SRCS-y += ethtool/ixgbe/ixgbe_ethtool.c
-SRCS-y += ethtool/ixgbe/ixgbe_82599.c
-SRCS-y += ethtool/ixgbe/ixgbe_82598.c
-SRCS-y += ethtool/ixgbe/ixgbe_x540.c
-SRCS-y += ethtool/ixgbe/ixgbe_phy.c
-SRCS-y += ethtool/ixgbe/kcompat.c
+SRCS-y := kni_misc.c
+SRCS-y += kni_net.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += kni_ethtool.c
 
-SRCS-y += ethtool/igb/e1000_82575.c
-SRCS-y += ethtool/igb/e1000_i210.c
-SRCS-y += ethtool/igb/e1000_api.c
-SRCS-y += ethtool/igb/e1000_mac.c
-SRCS-y += ethtool/igb/e1000_manage.c
-SRCS-y += ethtool/igb/e1000_mbx.c
-SRCS-y += ethtool/igb/e1000_nvm.c
-SRCS-y += ethtool/igb/e1000_phy.c
-SRCS-y += ethtool/igb/igb_ethtool.c
-SRCS-y += ethtool/igb/igb_main.c
-SRCS-y += ethtool/igb/igb_param.c
-SRCS-y += ethtool/igb/igb_vmdq.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_main.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_api.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_common.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_ethtool.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_82599.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_82598.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_x540.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/ixgbe_phy.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/ixgbe/kcompat.c
 
-SRCS-y += kni_misc.c
-SRCS-y += kni_net.c
-SRCS-y += kni_ethtool.c
-SRCS-$(CONFIG_RTE_KNI_VHOST) += kni_vhost.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_82575.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_i210.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_api.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_mac.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_manage.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_mbx.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_nvm.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/e1000_phy.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/igb_ethtool.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/igb_main.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/igb_param.c
+SRCS-$(CONFIG_RTE_KNI_KMOD_ETHTOOL) += ethtool/igb/igb_vmdq.c
 
 include $(RTE_SDK)/mk/rte.module.mk
diff --git a/lib/librte_eal/linuxapp/kni/compat.h b/lib/librte_eal/linuxapp/kni/compat.h
index 78da08e5..d96275af 100644
--- a/lib/librte_eal/linuxapp/kni/compat.h
+++ b/lib/librte_eal/linuxapp/kni/compat.h
@@ -2,6 +2,8 @@
  * Minimal wrappers to allow compiling kni on older kernels.
  */
 
+#include <linux/version.h>
+
 #ifndef RHEL_RELEASE_VERSION
 #define RHEL_RELEASE_VERSION(a, b) (((a) << 8) + (b))
 #endif
@@ -67,3 +69,7 @@
 	(LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 34)))
 #undef NET_NAME_UNKNOWN
 #endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+#define HAVE_SIGNAL_FUNCTIONS_OWN_HEADER
+#endif
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
index d7a987d5..95e262b7 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
@@ -1126,7 +1126,7 @@ static int igb_eeprom_test(struct igb_adapter *adapter, u64 *data)
 
 static irqreturn_t igb_test_intr(int irq, void *data)
 {
-	struct igb_adapter *adapter = (struct igb_adapter *) data;
+	struct igb_adapter *adapter = data;
 	struct e1000_hw *hw = &adapter->hw;
 
 	adapter->test_icr |= E1000_READ_REG(hw, E1000_ICR);
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c
index f4dca5a3..5f1f3a6b 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c
@@ -1031,8 +1031,15 @@ static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix)
 			for (i = 0; i < numvecs; i++)
 				adapter->msix_entries[i].entry = i;
 
+#ifdef HAVE_PCI_ENABLE_MSIX
 			err = pci_enable_msix(pdev,
 			                      adapter->msix_entries, numvecs);
+#else
+			err = pci_enable_msix_range(pdev,
+					adapter->msix_entries,
+					numvecs,
+					numvecs);
+#endif
 			if (err == 0)
 				break;
 		}
@@ -1629,7 +1636,7 @@ static void igb_check_swap_media(struct igb_adapter *adapter)
  */
 static int igb_get_i2c_data(void *data)
 {
-	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct igb_adapter *adapter = data;
 	struct e1000_hw *hw = &adapter->hw;
 	s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
 
@@ -1644,7 +1651,7 @@ static int igb_get_i2c_data(void *data)
  */
 static void igb_set_i2c_data(void *data, int state)
 {
-	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct igb_adapter *adapter = data;
 	struct e1000_hw *hw = &adapter->hw;
 	s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
 
@@ -1669,7 +1676,7 @@ static void igb_set_i2c_data(void *data, int state)
  */
 static void igb_set_i2c_clk(void *data, int state)
 {
-	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct igb_adapter *adapter = data;
 	struct e1000_hw *hw = &adapter->hw;
 	s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
 
@@ -1691,7 +1698,7 @@ static void igb_set_i2c_clk(void *data, int state)
  */
 static int igb_get_i2c_clk(void *data)
 {
-	struct igb_adapter *adapter = (struct igb_adapter *)data;
+	struct igb_adapter *adapter = data;
 	struct e1000_hw *hw = &adapter->hw;
 	s32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
 
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
index 84826b26..4c52da3c 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
@@ -710,6 +710,9 @@ struct _kc_ethtool_pauseparam {
 #elif ( LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,28) )
 /* SLES12 is at least 3.12.28+ based */
 #define SLE_VERSION_CODE SLE_VERSION(12,0,0)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 57))
+/* SLES12SP3 is at least 4.4.57+ based */
+#define SLE_VERSION_CODE SLE_VERSION(12, 3, 0)
 #endif /* LINUX_VERSION_CODE == KERNEL_VERSION(x,y,z) */
 #endif /* CONFIG_SUSE_KERNEL */
 #ifndef SLE_VERSION_CODE
@@ -3929,8 +3932,13 @@ skb_set_hash(struct sk_buff *skb, __u32 hash, __always_unused int type)
 #define vlan_tx_tag_present skb_vlan_tag_present
 #endif
 
-#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(4,9,0) )
+#if ((LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)) || \
+    (SLE_VERSION_CODE && SLE_VERSION_CODE >= SLE_VERSION(12, 3, 0)))
 #define HAVE_VF_VLAN_PROTO
-#endif /* >= 4.9.0 */
+#endif /* >= 4.9.0, >= SLES12SP3 */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 8, 0)
+#define HAVE_PCI_ENABLE_MSIX
+#endif
 
 #endif /* _KCOMPAT_H_ */
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
index bc3cb2f4..cdfcb959 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
@@ -1462,7 +1462,7 @@ static int ixgbe_eeprom_test(struct ixgbe_adapter *adapter, u64 *data)
 
 static irqreturn_t ixgbe_test_intr(int irq, void *data)
 {
-	struct net_device *netdev = (struct net_device *) data;
+	struct net_device *netdev = data;
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 
 	adapter->test_icr |= IXGBE_READ_REG(&adapter->hw, IXGBE_EICR);
@@ -2447,7 +2447,7 @@ static int ixgbe_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 		break;
 	case ETHTOOL_GRXCLSRLALL:
 		ret = ixgbe_get_ethtool_fdir_all(adapter, cmd,
-						 (u32 *)rule_locs);
+						 rule_locs);
 		break;
 	case ETHTOOL_GRXFH:
 		ret = ixgbe_get_rss_hash_opts(adapter, cmd);
diff --git a/lib/librte_eal/linuxapp/kni/kni_dev.h b/lib/librte_eal/linuxapp/kni/kni_dev.h
index 58cbadd3..72385ab4 100644
--- a/lib/librte_eal/linuxapp/kni/kni_dev.h
+++ b/lib/librte_eal/linuxapp/kni/kni_dev.h
@@ -30,17 +30,19 @@
 #endif
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include "compat.h"
+
 #include <linux/if.h>
 #include <linux/wait.h>
+#ifdef HAVE_SIGNAL_FUNCTIONS_OWN_HEADER
+#include <linux/sched/signal.h>
+#else
 #include <linux/sched.h>
+#endif
 #include <linux/netdevice.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
 
-#ifdef RTE_KNI_VHOST
-#include <net/sock.h>
-#endif
-
 #include <exec-env/rte_kni_common.h>
 #define KNI_KTHREAD_RESCHEDULE_INTERVAL 5 /* us */
 
@@ -102,15 +104,6 @@ struct kni_dev {
 	/* synchro for request processing */
 	unsigned long synchro;
 
-#ifdef RTE_KNI_VHOST
-	struct kni_vhost_queue *vhost_queue;
-
-	volatile enum {
-		BE_STOP = 0x1,
-		BE_START = 0x2,
-		BE_FINISH = 0x4,
-	} vq_status;
-#endif
 	/* buffers */
 	void *pa[MBUF_BURST_SZ];
 	void *va[MBUF_BURST_SZ];
@@ -118,26 +111,6 @@ struct kni_dev {
 	void *alloc_va[MBUF_BURST_SZ];
 };
 
-#ifdef RTE_KNI_VHOST
-uint32_t
-kni_poll(struct file *file, struct socket *sock, poll_table * wait);
-int kni_chk_vhost_rx(struct kni_dev *kni);
-int kni_vhost_init(struct kni_dev *kni);
-int kni_vhost_backend_release(struct kni_dev *kni);
-
-struct kni_vhost_queue {
-	struct sock sk;
-	struct socket *sock;
-	int vnet_hdr_sz;
-	struct kni_dev *kni;
-	int sockfd;
-	uint32_t flags;
-	struct sk_buff *cache;
-	struct rte_kni_fifo *fifo;
-};
-
-#endif
-
 void kni_net_rx(struct kni_dev *kni);
 void kni_net_init(struct net_device *dev);
 void kni_net_config_lo_mode(char *lo_str);
diff --git a/lib/librte_eal/linuxapp/kni/kni_fifo.h b/lib/librte_eal/linuxapp/kni/kni_fifo.h
index 025ec1c9..14f4141f 100644
--- a/lib/librte_eal/linuxapp/kni/kni_fifo.h
+++ b/lib/librte_eal/linuxapp/kni/kni_fifo.h
@@ -91,18 +91,4 @@ kni_fifo_free_count(struct rte_kni_fifo *fifo)
 	return (fifo->read - fifo->write - 1) & (fifo->len - 1);
 }
 
-#ifdef RTE_KNI_VHOST
-/**
- * Initializes the kni fifo structure
- */
-static inline void
-kni_fifo_init(struct rte_kni_fifo *fifo, uint32_t size)
-{
-	fifo->write = 0;
-	fifo->read = 0;
-	fifo->len = size;
-	fifo->elem_size = sizeof(void *);
-}
-#endif
-
 #endif /* _KNI_FIFO_H_ */
diff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c b/lib/librte_eal/linuxapp/kni/kni_misc.c
index 497db9bd..7590f1fd 100644
--- a/lib/librte_eal/linuxapp/kni/kni_misc.c
+++ b/lib/librte_eal/linuxapp/kni/kni_misc.c
@@ -140,11 +140,7 @@ kni_thread_single(void *data)
 		down_read(&knet->kni_list_lock);
 		for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
 			list_for_each_entry(dev, &knet->kni_list_head, list) {
-#ifdef RTE_KNI_VHOST
-				kni_chk_vhost_rx(dev);
-#else
 				kni_net_rx(dev);
-#endif
 				kni_net_poll_resp(dev);
 			}
 		}
@@ -163,15 +159,11 @@ static int
 kni_thread_multiple(void *param)
 {
 	int j;
-	struct kni_dev *dev = (struct kni_dev *)param;
+	struct kni_dev *dev = param;
 
 	while (!kthread_should_stop()) {
 		for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
-#ifdef RTE_KNI_VHOST
-			kni_chk_vhost_rx(dev);
-#else
 			kni_net_rx(dev);
-#endif
 			kni_net_poll_resp(dev);
 		}
 #ifdef RTE_KNI_PREEMPT_DEFAULT
@@ -205,12 +197,14 @@ kni_dev_remove(struct kni_dev *dev)
 	if (!dev)
 		return -ENODEV;
 
+#ifdef RTE_KNI_KMOD_ETHTOOL
 	if (dev->pci_dev) {
 		if (pci_match_id(ixgbe_pci_tbl, dev->pci_dev))
 			ixgbe_kni_remove(dev->pci_dev);
 		else if (pci_match_id(igb_pci_tbl, dev->pci_dev))
 			igb_kni_remove(dev->pci_dev);
 	}
+#endif
 
 	if (dev->net_dev) {
 		unregister_netdev(dev->net_dev);
@@ -246,9 +240,6 @@ kni_release(struct inode *inode, struct file *file)
 			dev->pthread = NULL;
 		}
 
-#ifdef RTE_KNI_VHOST
-		kni_vhost_backend_release(dev);
-#endif
 		kni_dev_remove(dev);
 		list_del(&dev->list);
 	}
@@ -326,11 +317,13 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 	struct kni_net *knet = net_generic(net, kni_net_id);
 	int ret;
 	struct rte_kni_device_info dev_info;
-	struct pci_dev *pci = NULL;
-	struct pci_dev *found_pci = NULL;
 	struct net_device *net_dev = NULL;
-	struct net_device *lad_dev = NULL;
 	struct kni_dev *kni, *dev, *n;
+#ifdef RTE_KNI_KMOD_ETHTOOL
+	struct pci_dev *found_pci = NULL;
+	struct net_device *lad_dev = NULL;
+	struct pci_dev *pci = NULL;
+#endif
 
 	pr_info("Creating kni...\n");
 	/* Check the buffer size, to avoid warning */
@@ -344,6 +337,12 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 		return -EIO;
 	}
 
+	/* Check if name is zero-ended */
+	if (strnlen(dev_info.name, sizeof(dev_info.name)) == sizeof(dev_info.name)) {
+		pr_err("kni.name not zero-terminated");
+		return -EINVAL;
+	}
+
 	/**
 	 * Check if the cpu core id is valid for binding.
 	 */
@@ -363,8 +362,8 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 	up_read(&knet->kni_list_lock);
 
 	net_dev = alloc_netdev(sizeof(struct kni_dev), dev_info.name,
-#ifdef NET_NAME_UNKNOWN
-							NET_NAME_UNKNOWN,
+#ifdef NET_NAME_USER
+							NET_NAME_USER,
 #endif
 							kni_net_init);
 	if (net_dev == NULL) {
@@ -392,10 +391,6 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 	kni->sync_va = dev_info.sync_va;
 	kni->sync_kva = phys_to_virt(dev_info.sync_phys);
 
-#ifdef RTE_KNI_VHOST
-	kni->vhost_queue = NULL;
-	kni->vq_status = BE_STOP;
-#endif
 	kni->mbuf_size = dev_info.mbuf_size;
 
 	pr_debug("tx_phys:      0x%016llx, tx_q addr:      0x%p\n",
@@ -418,7 +413,7 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 					dev_info.function,
 					dev_info.vendor_id,
 					dev_info.device_id);
-
+#ifdef RTE_KNI_KMOD_ETHTOOL
 	pci = pci_get_device(dev_info.vendor_id, dev_info.device_id, NULL);
 
 	/* Support Ethtool */
@@ -459,6 +454,7 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 	}
 	if (pci)
 		pci_dev_put(pci);
+#endif
 
 	if (kni->lad_dev)
 		ether_addr_copy(net_dev->dev_addr, kni->lad_dev->dev_addr);
@@ -479,10 +475,6 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 		return -ENODEV;
 	}
 
-#ifdef RTE_KNI_VHOST
-	kni_vhost_init(kni);
-#endif
-
 	ret = kni_run_thread(knet, kni, dev_info.force_bind);
 	if (ret != 0)
 		return ret;
@@ -526,9 +518,6 @@ kni_ioctl_release(struct net *net, uint32_t ioctl_num,
 			dev->pthread = NULL;
 		}
 
-#ifdef RTE_KNI_VHOST
-		kni_vhost_backend_release(dev);
-#endif
 		kni_dev_remove(dev);
 		list_del(&dev->list);
 		ret = 0;
diff --git a/lib/librte_eal/linuxapp/kni/kni_net.c b/lib/librte_eal/linuxapp/kni/kni_net.c
index 4ac99cfe..db9f4898 100644
--- a/lib/librte_eal/linuxapp/kni/kni_net.c
+++ b/lib/librte_eal/linuxapp/kni/kni_net.c
@@ -198,18 +198,6 @@ kni_net_config(struct net_device *dev, struct ifmap *map)
 /*
  * Transmit a packet (called by the kernel)
  */
-#ifdef RTE_KNI_VHOST
-static int
-kni_net_tx(struct sk_buff *skb, struct net_device *dev)
-{
-	struct kni_dev *kni = netdev_priv(dev);
-
-	dev_kfree_skb(skb);
-	kni->stats.tx_dropped++;
-
-	return NETDEV_TX_OK;
-}
-#else
 static int
 kni_net_tx(struct sk_buff *skb, struct net_device *dev)
 {
@@ -289,7 +277,6 @@ drop:
 
 	return NETDEV_TX_OK;
 }
-#endif
 
 /*
  * RX: normal working mode
diff --git a/lib/librte_eal/linuxapp/kni/kni_vhost.c b/lib/librte_eal/linuxapp/kni/kni_vhost.c
deleted file mode 100644
index f54c34b1..00000000
--- a/lib/librte_eal/linuxapp/kni/kni_vhost.c
+++ /dev/null
@@ -1,842 +0,0 @@
-/*-
- * GPL LICENSE SUMMARY
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *
- *   This program is free software; you can redistribute it and/or modify
- *   it under the terms of version 2 of the GNU General Public License as
- *   published by the Free Software Foundation.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *   General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program; if not, write to the Free Software
- *   Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *   The full GNU General Public License is included in this distribution
- *   in the file called LICENSE.GPL.
- *
- *   Contact Information:
- *   Intel Corporation
- */
-
-#include <linux/module.h>
-#include <linux/net.h>
-#include <net/sock.h>
-#include <linux/virtio_net.h>
-#include <linux/wait.h>
-#include <linux/mm.h>
-#include <linux/nsproxy.h>
-#include <linux/sched.h>
-#include <linux/if_tun.h>
-#include <linux/version.h>
-#include <linux/file.h>
-
-#include "compat.h"
-#include "kni_dev.h"
-#include "kni_fifo.h"
-
-#define RX_BURST_SZ 4
-
-#ifdef HAVE_STATIC_SOCK_MAP_FD
-static int kni_sock_map_fd(struct socket *sock)
-{
-	struct file *file;
-	int fd = get_unused_fd_flags(0);
-
-	if (fd < 0)
-		return fd;
-
-	file = sock_alloc_file(sock, 0, NULL);
-	if (IS_ERR(file)) {
-		put_unused_fd(fd);
-		return PTR_ERR(file);
-	}
-	fd_install(fd, file);
-	return fd;
-}
-#endif
-
-static struct proto kni_raw_proto = {
-	.name = "kni_vhost",
-	.owner = THIS_MODULE,
-	.obj_size = sizeof(struct kni_vhost_queue),
-};
-
-static inline int
-kni_vhost_net_tx(struct kni_dev *kni, struct msghdr *m,
-		 uint32_t offset, uint32_t len)
-{
-	struct rte_kni_mbuf *pkt_kva = NULL;
-	struct rte_kni_mbuf *pkt_va = NULL;
-	int ret;
-
-	pr_debug("tx offset=%d, len=%d, iovlen=%d\n",
-#ifdef HAVE_IOV_ITER_MSGHDR
-		   offset, len, (int)m->msg_iter.iov->iov_len);
-#else
-		   offset, len, (int)m->msg_iov->iov_len);
-#endif
-
-	/**
-	 * Check if it has at least one free entry in tx_q and
-	 * one entry in alloc_q.
-	 */
-	if (kni_fifo_free_count(kni->tx_q) == 0 ||
-	    kni_fifo_count(kni->alloc_q) == 0) {
-		/**
-		 * If no free entry in tx_q or no entry in alloc_q,
-		 * drops skb and goes out.
-		 */
-		goto drop;
-	}
-
-	/* dequeue a mbuf from alloc_q */
-	ret = kni_fifo_get(kni->alloc_q, (void **)&pkt_va, 1);
-	if (likely(ret == 1)) {
-		void *data_kva;
-
-		pkt_kva = (void *)pkt_va - kni->mbuf_va + kni->mbuf_kva;
-		data_kva = pkt_kva->buf_addr + pkt_kva->data_off
-			- kni->mbuf_va + kni->mbuf_kva;
-
-#ifdef HAVE_IOV_ITER_MSGHDR
-		copy_from_iter(data_kva, len, &m->msg_iter);
-#else
-		memcpy_fromiovecend(data_kva, m->msg_iov, offset, len);
-#endif
-
-		if (unlikely(len < ETH_ZLEN)) {
-			memset(data_kva + len, 0, ETH_ZLEN - len);
-			len = ETH_ZLEN;
-		}
-		pkt_kva->pkt_len = len;
-		pkt_kva->data_len = len;
-
-		/* enqueue mbuf into tx_q */
-		ret = kni_fifo_put(kni->tx_q, (void **)&pkt_va, 1);
-		if (unlikely(ret != 1)) {
-			/* Failing should not happen */
-			pr_err("Fail to enqueue mbuf into tx_q\n");
-			goto drop;
-		}
-	} else {
-		/* Failing should not happen */
-		pr_err("Fail to dequeue mbuf from alloc_q\n");
-		goto drop;
-	}
-
-	/* update statistics */
-	kni->stats.tx_bytes += len;
-	kni->stats.tx_packets++;
-
-	return 0;
-
-drop:
-	/* update statistics */
-	kni->stats.tx_dropped++;
-
-	return 0;
-}
-
-static inline int
-kni_vhost_net_rx(struct kni_dev *kni, struct msghdr *m,
-		 uint32_t offset, uint32_t len)
-{
-	uint32_t pkt_len;
-	struct rte_kni_mbuf *kva;
-	struct rte_kni_mbuf *va;
-	void *data_kva;
-	struct sk_buff *skb;
-	struct kni_vhost_queue *q = kni->vhost_queue;
-
-	if (unlikely(q == NULL))
-		return 0;
-
-	/* ensure at least one entry in free_q */
-	if (unlikely(kni_fifo_free_count(kni->free_q) == 0))
-		return 0;
-
-	skb = skb_dequeue(&q->sk.sk_receive_queue);
-	if (unlikely(skb == NULL))
-		return 0;
-
-	kva = (struct rte_kni_mbuf *)skb->data;
-
-	/* free skb to cache */
-	skb->data = NULL;
-	if (unlikely(kni_fifo_put(q->fifo, (void **)&skb, 1) != 1))
-		/* Failing should not happen */
-		pr_err("Fail to enqueue entries into rx cache fifo\n");
-
-	pkt_len = kva->data_len;
-	if (unlikely(pkt_len > len))
-		goto drop;
-
-	pr_debug("rx offset=%d, len=%d, pkt_len=%d, iovlen=%d\n",
-#ifdef HAVE_IOV_ITER_MSGHDR
-		   offset, len, pkt_len, (int)m->msg_iter.iov->iov_len);
-#else
-		   offset, len, pkt_len, (int)m->msg_iov->iov_len);
-#endif
-
-	data_kva = kva->buf_addr + kva->data_off - kni->mbuf_va + kni->mbuf_kva;
-#ifdef HAVE_IOV_ITER_MSGHDR
-	if (unlikely(copy_to_iter(data_kva, pkt_len, &m->msg_iter)))
-#else
-	if (unlikely(memcpy_toiovecend(m->msg_iov, data_kva, offset, pkt_len)))
-#endif
-		goto drop;
-
-	/* Update statistics */
-	kni->stats.rx_bytes += pkt_len;
-	kni->stats.rx_packets++;
-
-	/* enqueue mbufs into free_q */
-	va = (void *)kva - kni->mbuf_kva + kni->mbuf_va;
-	if (unlikely(kni_fifo_put(kni->free_q, (void **)&va, 1) != 1))
-		/* Failing should not happen */
-		pr_err("Fail to enqueue entries into free_q\n");
-
-	pr_debug("receive done %d\n", pkt_len);
-
-	return pkt_len;
-
-drop:
-	/* Update drop statistics */
-	kni->stats.rx_dropped++;
-
-	return 0;
-}
-
-static uint32_t
-kni_sock_poll(struct file *file, struct socket *sock, poll_table *wait)
-{
-	struct kni_vhost_queue *q =
-		container_of(sock->sk, struct kni_vhost_queue, sk);
-	struct kni_dev *kni;
-	uint32_t mask = 0;
-
-	if (unlikely(q == NULL || q->kni == NULL))
-		return POLLERR;
-
-	kni = q->kni;
-#ifdef HAVE_SOCKET_WQ
-	pr_debug("start kni_poll on group %d, wq 0x%16llx\n",
-		  kni->group_id, (uint64_t)sock->wq);
-	poll_wait(file, &sock->wq->wait, wait);
-#else
-	pr_debug("start kni_poll on group %d, wait at 0x%16llx\n",
-		  kni->group_id, (uint64_t)&sock->wait);
-	poll_wait(file, &sock->wait, wait);
-#endif
-
-	if (kni_fifo_count(kni->rx_q) > 0)
-		mask |= POLLIN | POLLRDNORM;
-
-	if (sock_writeable(&q->sk) ||
-#ifdef SOCKWQ_ASYNC_NOSPACE
-		(!test_and_set_bit(SOCKWQ_ASYNC_NOSPACE, &q->sock->flags) &&
-			sock_writeable(&q->sk)))
-#else
-		(!test_and_set_bit(SOCK_ASYNC_NOSPACE, &q->sock->flags) &&
-			sock_writeable(&q->sk)))
-#endif
-		mask |= POLLOUT | POLLWRNORM;
-
-	return mask;
-}
-
-static inline void
-kni_vhost_enqueue(struct kni_dev *kni, struct kni_vhost_queue *q,
-		  struct sk_buff *skb, struct rte_kni_mbuf *va)
-{
-	struct rte_kni_mbuf *kva;
-
-	kva = (void *)(va) - kni->mbuf_va + kni->mbuf_kva;
-	(skb)->data = (unsigned char *)kva;
-	(skb)->len = kva->data_len;
-	skb_queue_tail(&q->sk.sk_receive_queue, skb);
-}
-
-static inline void
-kni_vhost_enqueue_burst(struct kni_dev *kni, struct kni_vhost_queue *q,
-	  struct sk_buff **skb, struct rte_kni_mbuf **va)
-{
-	int i;
-
-	for (i = 0; i < RX_BURST_SZ; skb++, va++, i++)
-		kni_vhost_enqueue(kni, q, *skb, *va);
-}
-
-int
-kni_chk_vhost_rx(struct kni_dev *kni)
-{
-	struct kni_vhost_queue *q = kni->vhost_queue;
-	uint32_t nb_in, nb_mbuf, nb_skb;
-	const uint32_t BURST_MASK = RX_BURST_SZ - 1;
-	uint32_t nb_burst, nb_backlog, i;
-	struct sk_buff *skb[RX_BURST_SZ];
-	struct rte_kni_mbuf *va[RX_BURST_SZ];
-
-	if (unlikely(BE_STOP & kni->vq_status)) {
-		kni->vq_status |= BE_FINISH;
-		return 0;
-	}
-
-	if (unlikely(q == NULL))
-		return 0;
-
-	nb_skb = kni_fifo_count(q->fifo);
-	nb_mbuf = kni_fifo_count(kni->rx_q);
-
-	nb_in = min(nb_mbuf, nb_skb);
-	nb_in = min_t(uint32_t, nb_in, RX_BURST_SZ);
-	nb_burst   = (nb_in & ~BURST_MASK);
-	nb_backlog = (nb_in & BURST_MASK);
-
-	/* enqueue skb_queue per BURST_SIZE bulk */
-	if (nb_burst != 0) {
-		if (unlikely(kni_fifo_get(kni->rx_q, (void **)&va, RX_BURST_SZ)
-				!= RX_BURST_SZ))
-			goto except;
-
-		if (unlikely(kni_fifo_get(q->fifo, (void **)&skb, RX_BURST_SZ)
-				!= RX_BURST_SZ))
-			goto except;
-
-		kni_vhost_enqueue_burst(kni, q, skb, va);
-	}
-
-	/* all leftover, do one by one */
-	for (i = 0; i < nb_backlog; ++i) {
-		if (unlikely(kni_fifo_get(kni->rx_q, (void **)&va, 1) != 1))
-			goto except;
-
-		if (unlikely(kni_fifo_get(q->fifo, (void **)&skb, 1) != 1))
-			goto except;
-
-		kni_vhost_enqueue(kni, q, *skb, *va);
-	}
-
-	/* Ondemand wake up */
-	if ((nb_in == RX_BURST_SZ) || (nb_skb == 0) ||
-	    ((nb_mbuf < RX_BURST_SZ) && (nb_mbuf != 0))) {
-		wake_up_interruptible_poll(sk_sleep(&q->sk),
-				   POLLIN | POLLRDNORM | POLLRDBAND);
-		pr_debug("RX CHK KICK nb_mbuf %d, nb_skb %d, nb_in %d\n",
-			   nb_mbuf, nb_skb, nb_in);
-	}
-
-	return 0;
-
-except:
-	/* Failing should not happen */
-	pr_err("Fail to enqueue fifo, it shouldn't happen\n");
-	BUG_ON(1);
-
-	return 0;
-}
-
-static int
-#ifdef HAVE_KIOCB_MSG_PARAM
-kni_sock_sndmsg(struct kiocb *iocb, struct socket *sock,
-	   struct msghdr *m, size_t total_len)
-#else
-kni_sock_sndmsg(struct socket *sock,
-	   struct msghdr *m, size_t total_len)
-#endif /* HAVE_KIOCB_MSG_PARAM */
-{
-	struct kni_vhost_queue *q =
-		container_of(sock->sk, struct kni_vhost_queue, sk);
-	int vnet_hdr_len = 0;
-	unsigned long len = total_len;
-
-	if (unlikely(q == NULL || q->kni == NULL))
-		return 0;
-
-	pr_debug("kni_sndmsg len %ld, flags 0x%08x, nb_iov %d\n",
-#ifdef HAVE_IOV_ITER_MSGHDR
-		   len, q->flags, (int)m->msg_iter.iov->iov_len);
-#else
-		   len, q->flags, (int)m->msg_iovlen);
-#endif
-
-#ifdef RTE_KNI_VHOST_VNET_HDR_EN
-	if (likely(q->flags & IFF_VNET_HDR)) {
-		vnet_hdr_len = q->vnet_hdr_sz;
-		if (unlikely(len < vnet_hdr_len))
-			return -EINVAL;
-		len -= vnet_hdr_len;
-	}
-#endif
-
-	if (unlikely(len < ETH_HLEN + q->vnet_hdr_sz))
-		return -EINVAL;
-
-	return kni_vhost_net_tx(q->kni, m, vnet_hdr_len, len);
-}
-
-static int
-#ifdef HAVE_KIOCB_MSG_PARAM
-kni_sock_rcvmsg(struct kiocb *iocb, struct socket *sock,
-	   struct msghdr *m, size_t len, int flags)
-#else
-kni_sock_rcvmsg(struct socket *sock,
-	   struct msghdr *m, size_t len, int flags)
-#endif /* HAVE_KIOCB_MSG_PARAM */
-{
-	int vnet_hdr_len = 0;
-	int pkt_len = 0;
-	struct kni_vhost_queue *q =
-		container_of(sock->sk, struct kni_vhost_queue, sk);
-	static struct virtio_net_hdr
-		__attribute__ ((unused)) vnet_hdr = {
-		.flags = 0,
-		.gso_type = VIRTIO_NET_HDR_GSO_NONE
-	};
-
-	if (unlikely(q == NULL || q->kni == NULL))
-		return 0;
-
-#ifdef RTE_KNI_VHOST_VNET_HDR_EN
-	if (likely(q->flags & IFF_VNET_HDR)) {
-		vnet_hdr_len = q->vnet_hdr_sz;
-		len -= vnet_hdr_len;
-		if (len < 0)
-			return -EINVAL;
-	}
-#endif
-
-	pkt_len = kni_vhost_net_rx(q->kni, m, vnet_hdr_len, len);
-	if (unlikely(pkt_len == 0))
-		return 0;
-
-#ifdef RTE_KNI_VHOST_VNET_HDR_EN
-	/* no need to copy hdr when no pkt received */
-#ifdef HAVE_IOV_ITER_MSGHDR
-	if (unlikely(copy_to_iter((void *)&vnet_hdr, vnet_hdr_len,
-		&m->msg_iter)))
-#else
-	if (unlikely(memcpy_toiovecend(m->msg_iov,
-		(void *)&vnet_hdr, 0, vnet_hdr_len)))
-#endif /* HAVE_IOV_ITER_MSGHDR */
-		return -EFAULT;
-#endif /* RTE_KNI_VHOST_VNET_HDR_EN */
-	pr_debug("kni_rcvmsg expect_len %ld, flags 0x%08x, pkt_len %d\n",
-		   (unsigned long)len, q->flags, pkt_len);
-
-	return pkt_len + vnet_hdr_len;
-}
-
-/* dummy tap like ioctl */
-static int
-kni_sock_ioctl(struct socket *sock, uint32_t cmd, unsigned long arg)
-{
-	void __user *argp = (void __user *)arg;
-	struct ifreq __user *ifr = argp;
-	uint32_t __user *up = argp;
-	struct kni_vhost_queue *q =
-		container_of(sock->sk, struct kni_vhost_queue, sk);
-	struct kni_dev *kni;
-	uint32_t u;
-	int __user *sp = argp;
-	int s;
-	int ret;
-
-	pr_debug("tap ioctl cmd 0x%08x\n", cmd);
-
-	switch (cmd) {
-	case TUNSETIFF:
-		pr_debug("TUNSETIFF\n");
-		/* ignore the name, just look at flags */
-		if (get_user(u, &ifr->ifr_flags))
-			return -EFAULT;
-
-		ret = 0;
-		if ((u & ~IFF_VNET_HDR) != (IFF_NO_PI | IFF_TAP))
-			ret = -EINVAL;
-		else
-			q->flags = u;
-
-		return ret;
-
-	case TUNGETIFF:
-		pr_debug("TUNGETIFF\n");
-		rcu_read_lock_bh();
-		kni = rcu_dereference_bh(q->kni);
-		if (kni)
-			dev_hold(kni->net_dev);
-		rcu_read_unlock_bh();
-
-		if (!kni)
-			return -ENOLINK;
-
-		ret = 0;
-		if (copy_to_user(&ifr->ifr_name, kni->net_dev->name, IFNAMSIZ)
-				|| put_user(q->flags, &ifr->ifr_flags))
-			ret = -EFAULT;
-		dev_put(kni->net_dev);
-		return ret;
-
-	case TUNGETFEATURES:
-		pr_debug("TUNGETFEATURES\n");
-		u = IFF_TAP | IFF_NO_PI;
-#ifdef RTE_KNI_VHOST_VNET_HDR_EN
-		u |= IFF_VNET_HDR;
-#endif
-		if (put_user(u, up))
-			return -EFAULT;
-		return 0;
-
-	case TUNSETSNDBUF:
-		pr_debug("TUNSETSNDBUF\n");
-		if (get_user(u, up))
-			return -EFAULT;
-
-		q->sk.sk_sndbuf = u;
-		return 0;
-
-	case TUNGETVNETHDRSZ:
-		s = q->vnet_hdr_sz;
-		if (put_user(s, sp))
-			return -EFAULT;
-		pr_debug("TUNGETVNETHDRSZ %d\n", s);
-		return 0;
-
-	case TUNSETVNETHDRSZ:
-		if (get_user(s, sp))
-			return -EFAULT;
-		if (s < (int)sizeof(struct virtio_net_hdr))
-			return -EINVAL;
-
-		pr_debug("TUNSETVNETHDRSZ %d\n", s);
-		q->vnet_hdr_sz = s;
-		return 0;
-
-	case TUNSETOFFLOAD:
-		pr_debug("TUNSETOFFLOAD %lx\n", arg);
-#ifdef RTE_KNI_VHOST_VNET_HDR_EN
-		/* not support any offload yet */
-		if (!(q->flags & IFF_VNET_HDR))
-			return  -EINVAL;
-
-		return 0;
-#else
-		return -EINVAL;
-#endif
-
-	default:
-		pr_debug("NOT SUPPORT\n");
-		return -EINVAL;
-	}
-}
-
-static int
-kni_sock_compat_ioctl(struct socket *sock, uint32_t cmd,
-		     unsigned long arg)
-{
-	/* 32 bits app on 64 bits OS to be supported later */
-	pr_debug("Not implemented.\n");
-
-	return -EINVAL;
-}
-
-#define KNI_VHOST_WAIT_WQ_SAFE()                        \
-do {							\
-	while ((BE_FINISH | BE_STOP) == kni->vq_status) \
-		msleep(1);				\
-} while (0)						\
-
-
-static int
-kni_sock_release(struct socket *sock)
-{
-	struct kni_vhost_queue *q =
-		container_of(sock->sk, struct kni_vhost_queue, sk);
-	struct kni_dev *kni;
-
-	if (q == NULL)
-		return 0;
-
-	kni = q->kni;
-	if (kni != NULL) {
-		kni->vq_status = BE_STOP;
-		KNI_VHOST_WAIT_WQ_SAFE();
-		kni->vhost_queue = NULL;
-		q->kni = NULL;
-	}
-
-	if (q->sockfd != -1)
-		q->sockfd = -1;
-
-	sk_set_socket(&q->sk, NULL);
-	sock->sk = NULL;
-
-	sock_put(&q->sk);
-
-	pr_debug("dummy sock release done\n");
-
-	return 0;
-}
-
-int
-kni_sock_getname(struct socket *sock, struct sockaddr *addr,
-		int *sockaddr_len, int peer)
-{
-	pr_debug("dummy sock getname\n");
-	((struct sockaddr_ll *)addr)->sll_family = AF_PACKET;
-	return 0;
-}
-
-static const struct proto_ops kni_socket_ops = {
-	.getname = kni_sock_getname,
-	.sendmsg = kni_sock_sndmsg,
-	.recvmsg = kni_sock_rcvmsg,
-	.release = kni_sock_release,
-	.poll    = kni_sock_poll,
-	.ioctl   = kni_sock_ioctl,
-	.compat_ioctl = kni_sock_compat_ioctl,
-};
-
-static void
-kni_sk_write_space(struct sock *sk)
-{
-	wait_queue_head_t *wqueue;
-
-	if (!sock_writeable(sk) ||
-#ifdef SOCKWQ_ASYNC_NOSPACE
-	    !test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &sk->sk_socket->flags))
-#else
-	    !test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags))
-#endif
-		return;
-	wqueue = sk_sleep(sk);
-	if (wqueue && waitqueue_active(wqueue))
-		wake_up_interruptible_poll(
-			wqueue, POLLOUT | POLLWRNORM | POLLWRBAND);
-}
-
-static void
-kni_sk_destruct(struct sock *sk)
-{
-	struct kni_vhost_queue *q =
-		container_of(sk, struct kni_vhost_queue, sk);
-
-	if (!q)
-		return;
-
-	/* make sure there's no packet in buffer */
-	while (skb_dequeue(&sk->sk_receive_queue) != NULL)
-		;
-
-	mb();
-
-	if (q->fifo != NULL) {
-		kfree(q->fifo);
-		q->fifo = NULL;
-	}
-
-	if (q->cache != NULL) {
-		kfree(q->cache);
-		q->cache = NULL;
-	}
-}
-
-static int
-kni_vhost_backend_init(struct kni_dev *kni)
-{
-	struct kni_vhost_queue *q;
-	struct net *net = current->nsproxy->net_ns;
-	int err, i, sockfd;
-	struct rte_kni_fifo *fifo;
-	struct sk_buff *elem;
-
-	if (kni->vhost_queue != NULL)
-		return -1;
-
-#ifdef HAVE_SK_ALLOC_KERN_PARAM
-	q = (struct kni_vhost_queue *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL,
-			&kni_raw_proto, 0);
-#else
-	q = (struct kni_vhost_queue *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL,
-			&kni_raw_proto);
-#endif
-	if (!q)
-		return -ENOMEM;
-
-	err = sock_create_lite(AF_UNSPEC, SOCK_RAW, IPPROTO_RAW, &q->sock);
-	if (err)
-		goto free_sk;
-
-	sockfd = kni_sock_map_fd(q->sock);
-	if (sockfd < 0) {
-		err = sockfd;
-		goto free_sock;
-	}
-
-	/* cache init */
-	q->cache = kzalloc(
-		RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(struct sk_buff),
-		GFP_KERNEL);
-	if (!q->cache)
-		goto free_fd;
-
-	fifo = kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(void *)
-			+ sizeof(struct rte_kni_fifo), GFP_KERNEL);
-	if (!fifo)
-		goto free_cache;
-
-	kni_fifo_init(fifo, RTE_KNI_VHOST_MAX_CACHE_SIZE);
-
-	for (i = 0; i < RTE_KNI_VHOST_MAX_CACHE_SIZE; i++) {
-		elem = &q->cache[i];
-		kni_fifo_put(fifo, (void **)&elem, 1);
-	}
-	q->fifo = fifo;
-
-	/* store sockfd in vhost_queue */
-	q->sockfd = sockfd;
-
-	/* init socket */
-	q->sock->type = SOCK_RAW;
-	q->sock->state = SS_CONNECTED;
-	q->sock->ops = &kni_socket_ops;
-	sock_init_data(q->sock, &q->sk);
-
-	/* init sock data */
-	q->sk.sk_write_space = kni_sk_write_space;
-	q->sk.sk_destruct = kni_sk_destruct;
-	q->flags = IFF_NO_PI | IFF_TAP;
-	q->vnet_hdr_sz = sizeof(struct virtio_net_hdr);
-#ifdef RTE_KNI_VHOST_VNET_HDR_EN
-	q->flags |= IFF_VNET_HDR;
-#endif
-
-	/* bind kni_dev with vhost_queue */
-	q->kni = kni;
-	kni->vhost_queue = q;
-
-	wmb();
-
-	kni->vq_status = BE_START;
-
-#ifdef HAVE_SOCKET_WQ
-	pr_debug("backend init sockfd=%d, sock->wq=0x%16llx,sk->sk_wq=0x%16llx",
-		  q->sockfd, (uint64_t)q->sock->wq,
-		  (uint64_t)q->sk.sk_wq);
-#else
-	pr_debug("backend init sockfd=%d, sock->wait at 0x%16llx,sk->sk_sleep=0x%16llx",
-		  q->sockfd, (uint64_t)&q->sock->wait,
-		  (uint64_t)q->sk.sk_sleep);
-#endif
-
-	return 0;
-
-free_cache:
-	kfree(q->cache);
-	q->cache = NULL;
-
-free_fd:
-	put_unused_fd(sockfd);
-
-free_sock:
-	q->kni = NULL;
-	kni->vhost_queue = NULL;
-	kni->vq_status |= BE_FINISH;
-	sock_release(q->sock);
-	q->sock->ops = NULL;
-	q->sock = NULL;
-
-free_sk:
-	sk_free((struct sock *)q);
-
-	return err;
-}
-
-/* kni vhost sock sysfs */
-static ssize_t
-show_sock_fd(struct device *dev, struct device_attribute *attr,
-	     char *buf)
-{
-	struct net_device *net_dev = container_of(dev, struct net_device, dev);
-	struct kni_dev *kni = netdev_priv(net_dev);
-	int sockfd = -1;
-
-	if (kni->vhost_queue != NULL)
-		sockfd = kni->vhost_queue->sockfd;
-	return snprintf(buf, 10, "%d\n", sockfd);
-}
-
-static ssize_t
-show_sock_en(struct device *dev, struct device_attribute *attr,
-	     char *buf)
-{
-	struct net_device *net_dev = container_of(dev, struct net_device, dev);
-	struct kni_dev *kni = netdev_priv(net_dev);
-
-	return snprintf(buf, 10, "%u\n", (kni->vhost_queue == NULL ? 0 : 1));
-}
-
-static ssize_t
-set_sock_en(struct device *dev, struct device_attribute *attr,
-	      const char *buf, size_t count)
-{
-	struct net_device *net_dev = container_of(dev, struct net_device, dev);
-	struct kni_dev *kni = netdev_priv(net_dev);
-	unsigned long en;
-	int err = 0;
-
-	if (kstrtoul(buf, 0, &en) != 0)
-		return -EINVAL;
-
-	if (en)
-		err = kni_vhost_backend_init(kni);
-
-	return err ? err : count;
-}
-
-static DEVICE_ATTR(sock_fd, S_IRUGO | S_IRUSR, show_sock_fd, NULL);
-static DEVICE_ATTR(sock_en, S_IRUGO | S_IWUSR, show_sock_en, set_sock_en);
-static struct attribute *dev_attrs[] = {
-	&dev_attr_sock_fd.attr,
-	&dev_attr_sock_en.attr,
-	NULL,
-};
-
-static const struct attribute_group dev_attr_grp = {
-	.attrs = dev_attrs,
-};
-
-int
-kni_vhost_backend_release(struct kni_dev *kni)
-{
-	struct kni_vhost_queue *q = kni->vhost_queue;
-
-	if (q == NULL)
-		return 0;
-
-	/* dettach from kni */
-	q->kni = NULL;
-
-	pr_debug("release backend done\n");
-
-	return 0;
-}
-
-int
-kni_vhost_init(struct kni_dev *kni)
-{
-	struct net_device *dev = kni->net_dev;
-
-	if (sysfs_create_group(&dev->dev.kobj, &dev_attr_grp))
-		sysfs_remove_group(&dev->dev.kobj, &dev_attr_grp);
-
-	kni->vq_status = BE_STOP;
-
-	pr_debug("kni_vhost_init done\n");
-
-	return 0;
-}