New upstream version 16.11.9upstream/16.11.9upstream-16.11-stable

Change-Id: Ia1ac246c53e5050b6a29d6952fb668ad6c782996
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

16 files changed, 169 insertions, 36 deletions

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 6ca8af17..2dc86509 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -179,7 +179,7 @@ eal_plugin_add(const char *path)
 		return -1;
 	}
 	memset(solib, 0, sizeof(*solib));
-	strncpy(solib->name, path, PATH_MAX-1);
+	strlcpy(solib->name, path, PATH_MAX-1);
 	solib->name[PATH_MAX-1] = 0;
 	TAILQ_INSERT_TAIL(&solib_list, solib, next);
 
diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index f5e2f886..f17926f3 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -200,16 +200,7 @@ rte_is_aligned(void *ptr, unsigned align)
 /**
  * Triggers an error at compilation time if the condition is true.
  */
-#ifndef __OPTIMIZE__
 #define RTE_BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
-#else
-extern int RTE_BUILD_BUG_ON_detected_error;
-#define RTE_BUILD_BUG_ON(condition) do {             \
-	((void)sizeof(char[1 - 2*!!(condition)]));   \
-	if (condition)                               \
-		RTE_BUILD_BUG_ON_detected_error = 1; \
-} while(0)
-#endif
 
 /*********** Macros to work with powers of 2 ********/
 
@@ -326,6 +317,23 @@ rte_bsf32(uint32_t v)
 	return (uint32_t)__builtin_ctz(v);
 }
 
+/**
+ * Return the last (most-significant) bit set.
+ *
+ * @note The last (most significant) bit is at position 32.
+ * @note rte_fls_u32(0) = 0, rte_fls_u32(1) = 1, rte_fls_u32(0x80000000) = 32
+ *
+ * @param x
+ *     The input parameter.
+ * @return
+ *     The last (most-significant) bit set, or 0 if the input is 0.
+ */
+static inline int
+rte_fls_u32(uint32_t x)
+{
+	return (x == 0) ? 0 : 32 - __builtin_clz(x);
+}
+
 #ifndef offsetof
 /** Return the offset of a field in a structure. */
 #define offsetof(TYPE, MEMBER)  __builtin_offsetof (TYPE, MEMBER)
diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 9ce88472..10fa8564 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -248,6 +248,8 @@ TAILQ_HEAD(mapped_pci_res_list, mapped_pci_resource);
 do {                                                               \
 	unsigned long val;                                      \
 	char *end;                                              \
+	if (*in == '\0')                                        \
+		return -EINVAL;                                 \
 	errno = 0;                                              \
 	val = strtoul((in), &end, 16);                          \
 	if (errno != 0 || end[0] != (dlm) || val > (lim))       \
diff --git a/lib/librte_eal/common/include/rte_version.h b/lib/librte_eal/common/include/rte_version.h
index 9148ef16..b509ec93 100644
--- a/lib/librte_eal/common/include/rte_version.h
+++ b/lib/librte_eal/common/include/rte_version.h
@@ -66,7 +66,7 @@ extern "C" {
 /**
  * Patch level number i.e. the z in yy.mm.z
  */
-#define RTE_VER_MINOR 8
+#define RTE_VER_MINOR 9
 
 /**
  * Extra string to be appended to version number
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 59ed7882..bbd6284e 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -746,7 +746,8 @@ rte_eal_init(int argc, char **argv)
 	int i, fctret, ret;
 	pthread_t thread_id;
 	static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
-	const char *logid;
+	const char *p;
+	static char logid[PATH_MAX];
 	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
 	char thread_name[RTE_MAX_THREAD_NAME_LEN];
 
@@ -756,9 +757,8 @@ rte_eal_init(int argc, char **argv)
 	if (!rte_atomic32_test_and_set(&run_once))
 		return -1;
 
-	logid = strrchr(argv[0], '/');
-	logid = strdup(logid ? logid + 1: argv[0]);
-
+	p = strrchr(argv[0], '/');
+	strlcpy(logid, p ? p + 1 : argv[0], sizeof(logid));
 	thread_id = pthread_self();
 
 	eal_log_level_parse(argc, argv);
diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
index 7f739140..cce69285 100644
--- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
+++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
@@ -647,7 +647,7 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 {
 	int n, bytes_read;
 	struct rte_intr_source *src;
-	struct rte_intr_callback *cb;
+	struct rte_intr_callback *cb, *next;
 	union rte_intr_read_buffer buf;
 	struct rte_intr_callback active_cb;
 
@@ -713,6 +713,23 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds)
 					"descriptor %d: %s\n",
 					events[n].data.fd,
 					strerror(errno));
+				/*
+				 * The device is unplugged or buggy, remove
+				 * it as an interrupt source and return to
+				 * force the wait list to be rebuilt.
+				 */
+				rte_spinlock_lock(&intr_lock);
+				TAILQ_REMOVE(&intr_sources, src, next);
+				rte_spinlock_unlock(&intr_lock);
+
+				for (cb = TAILQ_FIRST(&src->callbacks); cb;
+							cb = next) {
+					next = TAILQ_NEXT(cb, next);
+					TAILQ_REMOVE(&src->callbacks, cb, next);
+					free(cb);
+				}
+				free(src);
+				return -1;
 			} else if (bytes_read == 0)
 				RTE_LOG(ERR, EAL, "Read nothing from file "
 					"descriptor %d\n", events[n].data.fd);
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
index 42280678..3ca217f4 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
@@ -327,7 +327,7 @@ pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
 			loc->function, res_idx);
 
 	/* allocate memory to keep path */
-	maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0);
+	maps[map_idx].path = rte_malloc(NULL, sizeof(devname), 0);
 	if (maps[map_idx].path == NULL) {
 		RTE_LOG(ERR, EAL, "Cannot allocate memory for path: %s\n",
 				strerror(errno));
diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.h b/lib/librte_eal/linuxapp/eal/eal_vfio.h
index ac31a4fc..72f1f757 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.h
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.h
@@ -59,23 +59,46 @@
 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
+
 struct vfio_iommu_spapr_register_memory {
 	uint32_t argsz;
 	uint32_t flags;
 	uint64_t vaddr;
 	uint64_t size;
 };
+
 struct vfio_iommu_spapr_tce_create {
 	uint32_t argsz;
 	uint32_t page_shift;
 	uint64_t window_size;
 	uint32_t levels;
 };
+
 struct vfio_iommu_spapr_tce_remove {
 	uint32_t argsz;
 	uint64_t start_addr;
 };
-#else
+
+struct vfio_iommu_spapr_tce_ddw_info {
+	uint64_t pgsizes;
+	uint32_t max_dynamic_windows_supported;
+	uint32_t levels;
+};
+
+/* SPAPR_v2 is not present, but SPAPR might be */
+#ifndef VFIO_SPAPR_TCE_IOMMU
+#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
+
+struct vfio_iommu_spapr_tce_info {
+	uint32_t argsz;
+	uint32_t flags;
+	uint32_t dma32_window_start;
+	uint32_t dma32_window_size;
+	struct vfio_iommu_spapr_tce_ddw_info ddw;
+};
+#endif /* VFIO_SPAPR_TCE_IOMMU */
+
+#else /* VFIO_SPAPR_TCE_v2_IOMMU */
 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
 #endif
 
diff --git a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
index 09713b0c..1dc161c2 100644
--- a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
+++ b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
@@ -61,6 +61,7 @@
 
 #ifdef __KERNEL__
 #include <linux/if.h>
+#include <asm/barrier.h>
 #define RTE_STD_C11
 #else
 #include <rte_common.h>
diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index 9f00f07a..59d6a093 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -170,6 +170,33 @@ igbuio_pci_irqhandler(int irq, struct uio_info *info)
 	return IRQ_HANDLED;
 }
 
+/**
+ * This gets called while opening uio device file.
+ */
+static int
+igbuio_pci_open(struct uio_info *info, struct inode *inode)
+{
+	struct rte_uio_pci_dev *udev = info->priv;
+	struct pci_dev *dev = udev->pdev;
+
+	/* set bus master, which was cleared by the reset function */
+	pci_set_master(dev);
+
+	return 0;
+}
+
+static int
+igbuio_pci_release(struct uio_info *info, struct inode *inode)
+{
+	struct rte_uio_pci_dev *udev = info->priv;
+	struct pci_dev *dev = udev->pdev;
+
+	/* stop the device from further DMA */
+	pci_clear_master(dev);
+
+	return 0;
+}
+
 #ifdef CONFIG_XEN_DOM0
 static int
 igbuio_dom0_mmap_phys(struct uio_info *info, struct vm_area_struct *vma)
@@ -370,6 +397,8 @@ igbuio_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	udev->info.version = "0.1";
 	udev->info.handler = igbuio_pci_irqhandler;
 	udev->info.irqcontrol = igbuio_pci_irqcontrol;
+	udev->info.open = igbuio_pci_open;
+	udev->info.release = igbuio_pci_release;
 #ifdef CONFIG_XEN_DOM0
 	/* check if the driver run on Xen Dom0 */
 	if (xen_initial_domain())
@@ -460,6 +489,8 @@ igbuio_pci_remove(struct pci_dev *dev)
 {
 	struct rte_uio_pci_dev *udev = pci_get_drvdata(dev);
 
+	igbuio_pci_release(&udev->info, NULL);
+
 	sysfs_remove_group(&dev->dev.kobj, &dev_attr_grp);
 	uio_unregister_device(&udev->info);
 	igbuio_pci_release_iomem(&udev->info);
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 1110bef8..272f3096 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
@@ -150,6 +150,7 @@ static const char igb_gstrings_test[][ETH_GSTRING_LEN] = {
 #define IGB_TEST_LEN (sizeof(igb_gstrings_test) / ETH_GSTRING_LEN)
 #endif /* ETHTOOL_TEST */
 
+#ifndef ETHTOOL_GLINKSETTINGS
 static int igb_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 {
 	struct igb_adapter *adapter = netdev_priv(netdev);
@@ -274,7 +275,9 @@ static int igb_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 #endif /* ETH_TP_MDI_X */
 	return 0;
 }
+#endif
 
+#ifndef ETHTOOL_SLINKSETTINGS
 static int igb_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 {
 	struct igb_adapter *adapter = netdev_priv(netdev);
@@ -379,6 +382,7 @@ static int igb_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 	clear_bit(__IGB_RESETTING, &adapter->state);
 	return 0;
 }
+#endif
 
 static u32 igb_get_link(struct net_device *netdev)
 {
@@ -2752,8 +2756,12 @@ static int igb_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 #endif /* ETHTOOL_GRXRINGS */
 
 static const struct ethtool_ops igb_ethtool_ops = {
+#ifndef ETHTOOL_GLINKSETTINGS
 	.get_settings           = igb_get_settings,
+#endif
+#ifndef ETHTOOL_SLINKSETTINGS
 	.set_settings           = igb_set_settings,
+#endif
 	.get_drvinfo            = igb_get_drvinfo,
 	.get_regs_len           = igb_get_regs_len,
 	.get_regs               = igb_get_regs,
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
index 9e4798ef..87d0096c 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
@@ -697,19 +697,22 @@ struct _kc_ethtool_pauseparam {
 #define SLE_VERSION(a,b,c) KERNEL_VERSION(a,b,c)
 #endif
 #ifdef CONFIG_SUSE_KERNEL
-#if ( LINUX_VERSION_CODE == KERNEL_VERSION(2,6,27) )
-/* SLES11 GA is 2.6.27 based */
-#define SLE_VERSION_CODE SLE_VERSION(11,0,0)
-#elif ( LINUX_VERSION_CODE == KERNEL_VERSION(2,6,32) )
-/* SLES11 SP1 is 2.6.32 based */
-#define SLE_VERSION_CODE SLE_VERSION(11,1,0)
+#if (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)
+#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(3,0,61)) && \
        (LINUX_VERSION_CODE < KERNEL_VERSION(3,1,0)))
 /* SLES11 SP3 is at least 3.0.61+ based */
 #define SLE_VERSION_CODE SLE_VERSION(11,3,0)
-#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(2,6,32) )
+/* SLES11 SP1 is 2.6.32 based */
+#define SLE_VERSION_CODE SLE_VERSION(11,1,0)
+#elif ( LINUX_VERSION_CODE == KERNEL_VERSION(2,6,27) )
+/* SLES11 GA is 2.6.27 based */
+#define SLE_VERSION_CODE SLE_VERSION(11,0,0)
 #endif /* LINUX_VERSION_CODE == KERNEL_VERSION(x,y,z) */
 #endif /* CONFIG_SUSE_KERNEL */
 #ifndef SLE_VERSION_CODE
@@ -3912,7 +3915,8 @@ skb_set_hash(struct sk_buff *skb, __u32 hash, __always_unused int type)
 #define HAVE_NDO_BRIDGE_GETLINK_NLFLAGS
 #endif /* >= 4.1.0 */
 
-#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0) )
+#if (( LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0) ) \
+    || ( RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7,4) ))
 /* ndo_bridge_getlink adds new filter_mask and vlan_fill parameters */
 #define HAVE_NDO_BRIDGE_GETLINK_FILTER_MASK_VLAN_FILL
 #endif /* >= 4.2.0 */
@@ -3929,9 +3933,16 @@ 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)) || \
+     (RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 4)))
 #define HAVE_VF_VLAN_PROTO
-#endif /* >= 4.9.0 */
+#if (RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(7, 4))
+/* In RHEL/Centos 7.4, the "new" version of ndo_set_vf_vlan
+ * is in the struct net_device_ops_extended */
+#define ndo_set_vf_vlan extended.ndo_set_vf_vlan
+#endif
+#endif
 
 #if (defined(RHEL_RELEASE_CODE) && \
 	(RHEL_RELEASE_VERSION(7, 5) <= RHEL_RELEASE_CODE))
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe.h b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe.h
index 59415469..cc3f8ea4 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe.h
+++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe.h
@@ -905,8 +905,10 @@ s32 ixgbe_dcb_hw_ets(struct ixgbe_hw *hw, struct ieee_ets *ets, int max_frame);
 #endif /* CONFIG_DCB */
 
 extern void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring);
+#ifndef ETHTOOL_GLINKSETTINGS
 extern int ixgbe_get_settings(struct net_device *netdev,
 			      struct ethtool_cmd *ecmd);
+#endif
 extern int ixgbe_write_uc_addr_list(struct ixgbe_adapter *adapter,
 			    struct net_device *netdev, unsigned int vfn);
 extern void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter);
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..8e3f2587 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
@@ -173,6 +173,7 @@ static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
 #define IXGBE_TEST_LEN	(sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)
 #endif /* ETHTOOL_TEST */
 
+#ifndef ETHTOOL_GLINKSETTINGS
 int ixgbe_get_settings(struct net_device *netdev,
 		       struct ethtool_cmd *ecmd)
 {
@@ -362,7 +363,9 @@ int ixgbe_get_settings(struct net_device *netdev,
 
 	return 0;
 }
+#endif
 
+#ifndef ETHTOOL_SLINKSETTINGS
 static int ixgbe_set_settings(struct net_device *netdev,
 			      struct ethtool_cmd *ecmd)
 {
@@ -406,6 +409,7 @@ static int ixgbe_set_settings(struct net_device *netdev,
 	}
 	return err;
 }
+#endif
 
 static void ixgbe_get_pauseparam(struct net_device *netdev,
 				 struct ethtool_pauseparam *pause)
@@ -2830,8 +2834,12 @@ static int ixgbe_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 #endif /* ETHTOOL_GRXRINGS */
 //static
 struct ethtool_ops ixgbe_ethtool_ops = {
+#ifndef ETHTOOL_GLINKSETTINGS
 	.get_settings		= ixgbe_get_settings,
+#endif
+#ifndef ETHTOOL_SLINKSETTINGS
 	.set_settings		= ixgbe_set_settings,
+#endif
 	.get_drvinfo		= ixgbe_get_drvinfo,
 	.get_regs_len		= ixgbe_get_regs_len,
 	.get_regs		= ixgbe_get_regs,
diff --git a/lib/librte_eal/linuxapp/kni/kni_ethtool.c b/lib/librte_eal/linuxapp/kni/kni_ethtool.c
index 0c88589c..8174e98d 100644
--- a/lib/librte_eal/linuxapp/kni/kni_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/kni_ethtool.c
@@ -46,6 +46,8 @@ kni_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
 	priv->lad_dev->ethtool_ops->get_drvinfo(priv->lad_dev, info);
 }
 
+/* ETHTOOL_GLINKSETTINGS replaces ETHTOOL_GSET */
+#ifndef ETHTOOL_GLINKSETTINGS
 static int
 kni_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 {
@@ -53,7 +55,10 @@ kni_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 
 	return priv->lad_dev->ethtool_ops->get_settings(priv->lad_dev, ecmd);
 }
+#endif
 
+/* ETHTOOL_SLINKSETTINGS replaces ETHTOOL_SSET */
+#ifndef ETHTOOL_SLINKSETTINGS
 static int
 kni_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 {
@@ -61,6 +66,7 @@ kni_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 
 	return priv->lad_dev->ethtool_ops->set_settings(priv->lad_dev, ecmd);
 }
+#endif
 
 static void
 kni_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
@@ -209,8 +215,12 @@ kni_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats,
 struct ethtool_ops kni_ethtool_ops = {
 	.begin			= kni_check_if_running,
 	.get_drvinfo		= kni_get_drvinfo,
+#ifndef ETHTOOL_GLINKSETTINGS
 	.get_settings		= kni_get_settings,
+#endif
+#ifndef ETHTOOL_SLINKSETTINGS
 	.set_settings		= kni_set_settings,
+#endif
 	.get_regs_len		= kni_get_regs_len,
 	.get_regs		= kni_get_regs,
 	.get_wol		= kni_get_wol,
diff --git a/lib/librte_eal/linuxapp/kni/kni_fifo.h b/lib/librte_eal/linuxapp/kni/kni_fifo.h
index 025ec1c9..208d34bf 100644
--- a/lib/librte_eal/linuxapp/kni/kni_fifo.h
+++ b/lib/librte_eal/linuxapp/kni/kni_fifo.h
@@ -27,6 +27,14 @@
 
 #include <exec-env/rte_kni_common.h>
 
+/* Skip some memory barriers on Linux < 3.14 */
+#ifndef smp_load_acquire
+#define smp_load_acquire(a) (*(a))
+#endif
+#ifndef smp_store_release
+#define smp_store_release(a, b) *(a) = (b)
+#endif
+
 /**
  * Adds num elements into the fifo. Return the number actually written
  */
@@ -35,7 +43,7 @@ kni_fifo_put(struct rte_kni_fifo *fifo, void **data, uint32_t num)
 {
 	uint32_t i = 0;
 	uint32_t fifo_write = fifo->write;
-	uint32_t fifo_read = fifo->read;
+	uint32_t fifo_read = smp_load_acquire(&fifo->read);
 	uint32_t new_write = fifo_write;
 
 	for (i = 0; i < num; i++) {
@@ -46,7 +54,7 @@ kni_fifo_put(struct rte_kni_fifo *fifo, void **data, uint32_t num)
 		fifo->buffer[fifo_write] = data[i];
 		fifo_write = new_write;
 	}
-	fifo->write = fifo_write;
+	smp_store_release(&fifo->write, fifo_write);
 
 	return i;
 }
@@ -59,7 +67,7 @@ kni_fifo_get(struct rte_kni_fifo *fifo, void **data, uint32_t num)
 {
 	uint32_t i = 0;
 	uint32_t new_read = fifo->read;
-	uint32_t fifo_write = fifo->write;
+	uint32_t fifo_write = smp_load_acquire(&fifo->write);
 
 	for (i = 0; i < num; i++) {
 		if (new_read == fifo_write)
@@ -68,7 +76,7 @@ kni_fifo_get(struct rte_kni_fifo *fifo, void **data, uint32_t num)
 		data[i] = fifo->buffer[new_read];
 		new_read = (new_read + 1) & (fifo->len - 1);
 	}
-	fifo->read = new_read;
+	smp_store_release(&fifo->read, new_read);
 
 	return i;
 }
@@ -79,7 +87,9 @@ kni_fifo_get(struct rte_kni_fifo *fifo, void **data, uint32_t num)
 static inline uint32_t
 kni_fifo_count(struct rte_kni_fifo *fifo)
 {
-	return (fifo->len + fifo->write - fifo->read) & (fifo->len - 1);
+	uint32_t fifo_write = smp_load_acquire(&fifo->write);
+	uint32_t fifo_read = smp_load_acquire(&fifo->read);
+	return (fifo->len + fifo_write - fifo_read) & (fifo->len - 1);
 }
 
 /**
@@ -88,7 +98,9 @@ kni_fifo_count(struct rte_kni_fifo *fifo)
 static inline uint32_t
 kni_fifo_free_count(struct rte_kni_fifo *fifo)
 {
-	return (fifo->read - fifo->write - 1) & (fifo->len - 1);
+	uint32_t fifo_write = smp_load_acquire(&fifo->write);
+	uint32_t fifo_read = smp_load_acquire(&fifo->read);
+	return (fifo_read - fifo_write - 1) & (fifo->len - 1);
 }
 
 #ifdef RTE_KNI_VHOST