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

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

33 files changed, 334 insertions, 147 deletions

diff --git a/lib/librte_acl/rte_acl.h b/lib/librte_acl/rte_acl.h
index caa91f7e..39686d51 100644
--- a/lib/librte_acl/rte_acl.h
+++ b/lib/librte_acl/rte_acl.h
@@ -117,7 +117,7 @@ enum {
 	RTE_ACL_TYPE_SHIFT = 29,
 	RTE_ACL_MAX_INDEX = RTE_LEN2MASK(RTE_ACL_TYPE_SHIFT, uint32_t),
 	RTE_ACL_MAX_PRIORITY = RTE_ACL_MAX_INDEX,
-	RTE_ACL_MIN_PRIORITY = 0,
+	RTE_ACL_MIN_PRIORITY = 1,
 };
 
 #define	RTE_ACL_INVALID_USERDATA	0
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
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 9b28e95a..4992b30f 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -601,6 +601,13 @@ rte_eth_dev_rx_queue_start(uint8_t port_id, uint16_t rx_queue_id)
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
 	dev = &rte_eth_devices[port_id];
+	if (!dev->data->dev_started) {
+		RTE_PMD_DEBUG_TRACE(
+		    "port %d must be started before start any queue\n",
+		    port_id);
+		return -EINVAL;
+	}
+
 	if (rx_queue_id >= dev->data->nb_rx_queues) {
 		RTE_PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", rx_queue_id);
 		return -EINVAL;
@@ -627,12 +634,6 @@ rte_eth_dev_rx_queue_stop(uint8_t port_id, uint16_t rx_queue_id)
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
 	dev = &rte_eth_devices[port_id];
-	if (!dev->data->dev_started) {
-		RTE_PMD_DEBUG_TRACE(
-		    "port %d must be started before start any queue\n", port_id);
-		return -EINVAL;
-	}
-
 	if (rx_queue_id >= dev->data->nb_rx_queues) {
 		RTE_PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", rx_queue_id);
 		return -EINVAL;
@@ -659,6 +660,13 @@ rte_eth_dev_tx_queue_start(uint8_t port_id, uint16_t tx_queue_id)
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
 	dev = &rte_eth_devices[port_id];
+	if (!dev->data->dev_started) {
+		RTE_PMD_DEBUG_TRACE(
+		    "port %d must be started before start any queue\n",
+		    port_id);
+		return -EINVAL;
+	}
+
 	if (tx_queue_id >= dev->data->nb_tx_queues) {
 		RTE_PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", tx_queue_id);
 		return -EINVAL;
@@ -685,12 +693,6 @@ rte_eth_dev_tx_queue_stop(uint8_t port_id, uint16_t tx_queue_id)
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
 	dev = &rte_eth_devices[port_id];
-	if (!dev->data->dev_started) {
-		RTE_PMD_DEBUG_TRACE(
-		    "port %d must be started before start any queue\n", port_id);
-		return -EINVAL;
-	}
-
 	if (tx_queue_id >= dev->data->nb_tx_queues) {
 		RTE_PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", tx_queue_id);
 		return -EINVAL;
@@ -795,7 +797,9 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 {
 	struct rte_eth_dev *dev;
 	struct rte_eth_dev_info dev_info;
+	struct rte_eth_conf orig_conf;
 	int diag;
+	int ret;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
@@ -824,6 +828,9 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		return -EBUSY;
 	}
 
+	/* Store original config, as rollback required on failure */
+	memcpy(&orig_conf, &dev->data->dev_conf, sizeof(dev->data->dev_conf));
+
 	/* Copy the dev_conf parameter into the dev structure */
 	memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
 
@@ -836,19 +843,22 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 
 	if (nb_rx_q == 0 && nb_tx_q == 0) {
 		RTE_PMD_DEBUG_TRACE("ethdev port_id=%d both rx and tx queue cannot be 0\n", port_id);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto rollback;
 	}
 
 	if (nb_rx_q > dev_info.max_rx_queues) {
 		RTE_PMD_DEBUG_TRACE("ethdev port_id=%d nb_rx_queues=%d > %d\n",
 				port_id, nb_rx_q, dev_info.max_rx_queues);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto rollback;
 	}
 
 	if (nb_tx_q > dev_info.max_tx_queues) {
 		RTE_PMD_DEBUG_TRACE("ethdev port_id=%d nb_tx_queues=%d > %d\n",
 				port_id, nb_tx_q, dev_info.max_tx_queues);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto rollback;
 	}
 
 	/*
@@ -859,7 +869,8 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		(!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC))) {
 			RTE_PMD_DEBUG_TRACE("driver %s does not support lsc\n",
 					dev->data->drv_name);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto rollback;
 	}
 
 	/*
@@ -874,14 +885,16 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 				port_id,
 				(unsigned)dev_conf->rxmode.max_rx_pkt_len,
 				(unsigned)dev_info.max_rx_pktlen);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto rollback;
 		} else if (dev_conf->rxmode.max_rx_pkt_len < ETHER_MIN_LEN) {
 			RTE_PMD_DEBUG_TRACE("ethdev port_id=%d max_rx_pkt_len %u"
 				" < min valid value %u\n",
 				port_id,
 				(unsigned)dev_conf->rxmode.max_rx_pkt_len,
 				(unsigned)ETHER_MIN_LEN);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto rollback;
 		}
 	} else {
 		if (dev_conf->rxmode.max_rx_pkt_len < ETHER_MIN_LEN ||
@@ -898,7 +911,8 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 	if (diag != 0) {
 		RTE_PMD_DEBUG_TRACE("port%d rte_eth_dev_rx_queue_config = %d\n",
 				port_id, diag);
-		return diag;
+		ret = diag;
+		goto rollback;
 	}
 
 	diag = rte_eth_dev_tx_queue_config(dev, nb_tx_q);
@@ -906,7 +920,8 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 		RTE_PMD_DEBUG_TRACE("port%d rte_eth_dev_tx_queue_config = %d\n",
 				port_id, diag);
 		rte_eth_dev_rx_queue_config(dev, 0);
-		return diag;
+		ret = diag;
+		goto rollback;
 	}
 
 	diag = (*dev->dev_ops->dev_configure)(dev);
@@ -915,10 +930,16 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 				port_id, diag);
 		rte_eth_dev_rx_queue_config(dev, 0);
 		rte_eth_dev_tx_queue_config(dev, 0);
-		return diag;
+		ret = diag;
+		goto rollback;
 	}
 
 	return 0;
+
+rollback:
+	memcpy(&dev->data->dev_conf, &orig_conf, sizeof(dev->data->dev_conf));
+
+	return ret;
 }
 
 static void
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 981e0577..41839bbe 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -842,12 +842,6 @@ struct rte_eth_conf {
 };
 
 /**
- * A structure used to retrieve the contextual information of
- * an Ethernet device, such as the controlling driver of the device,
- * its PCI context, etc...
- */
-
-/**
  * RX offload capabilities of a device.
  */
 #define DEV_RX_OFFLOAD_VLAN_STRIP  0x00000001
@@ -878,6 +872,12 @@ struct rte_eth_conf {
 /**
  * Ethernet device information
  */
+
+/**
+ * A structure used to retrieve the contextual information of
+ * an Ethernet device, such as the controlling driver of the
+ * device, etc...
+ */
 struct rte_eth_dev_info {
 	struct rte_pci_device *pci_dev; /**< Device PCI information. */
 	const char *driver_name; /**< Device Driver name. */
diff --git a/lib/librte_hash/rte_cuckoo_hash.c b/lib/librte_hash/rte_cuckoo_hash.c
index 049ff988..2414c7f2 100644
--- a/lib/librte_hash/rte_cuckoo_hash.c
+++ b/lib/librte_hash/rte_cuckoo_hash.c
@@ -212,7 +212,9 @@ rte_hash_create(const struct rte_hash_parameters *params)
 		goto err_unlock;
 	}
 
-	const uint32_t key_entry_size = sizeof(struct rte_hash_key) + params->key_len;
+	const uint32_t key_entry_size =
+		RTE_ALIGN(sizeof(struct rte_hash_key) + params->key_len,
+			  KEY_ALIGNMENT);
 	const uint64_t key_tbl_size = (uint64_t) key_entry_size * num_key_slots;
 
 	k = rte_zmalloc_socket(NULL, key_tbl_size,
@@ -405,7 +407,7 @@ rte_hash_reset(struct rte_hash *h)
 
 	/* clear the free ring */
 	while (rte_ring_dequeue(h->free_slots, &ptr) == 0)
-		rte_pause();
+		continue;
 
 	/* Repopulate the free slots ring. Entry zero is reserved for key misses */
 	if (h->hw_trans_mem_support)
diff --git a/lib/librte_hash/rte_cuckoo_hash.h b/lib/librte_hash/rte_cuckoo_hash.h
index 1b8ffed8..dae3f4a3 100644
--- a/lib/librte_hash/rte_cuckoo_hash.h
+++ b/lib/librte_hash/rte_cuckoo_hash.h
@@ -161,7 +161,7 @@ struct rte_hash_key {
 	};
 	/* Variable key size */
 	char key[0];
-} __attribute__((aligned(KEY_ALIGNMENT)));
+};
 
 /* All different signature compare functions */
 enum rte_hash_sig_compare_function {
diff --git a/lib/librte_ip_frag/ip_frag_common.h b/lib/librte_ip_frag/ip_frag_common.h
index 835e4f93..5382a3e3 100644
--- a/lib/librte_ip_frag/ip_frag_common.h
+++ b/lib/librte_ip_frag/ip_frag_common.h
@@ -81,28 +81,23 @@ struct rte_mbuf *ipv6_frag_reassemble(struct ip_frag_pkt *fp);
 static inline int
 ip_frag_key_is_empty(const struct ip_frag_key * key)
 {
-	uint32_t i;
-	for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
-		if (key->src_dst[i] != 0)
-			return 0;
-	return 1;
+	return (key->key_len == 0);
 }
 
-/* empty the key */
+/* invalidate the key */
 static inline void
 ip_frag_key_invalidate(struct ip_frag_key * key)
 {
-	uint32_t i;
-	for (i = 0; i < key->key_len; i++)
-		key->src_dst[i] = 0;
+	key->key_len = 0;
 }
 
 /* compare two keys */
-static inline int
+static inline uint64_t
 ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
 {
-	uint32_t i, val;
-	val = k1->id ^ k2->id;
+	uint32_t i;
+	uint64_t val;
+	val = k1->id_key_len ^ k2->id_key_len;
 	for (i = 0; i < k1->key_len; i++)
 		val |= k1->src_dst[i] ^ k2->src_dst[i];
 	return val;
diff --git a/lib/librte_ip_frag/rte_ip_frag.h b/lib/librte_ip_frag/rte_ip_frag.h
index 6708906d..e13486ac 100644
--- a/lib/librte_ip_frag/rte_ip_frag.h
+++ b/lib/librte_ip_frag/rte_ip_frag.h
@@ -72,9 +72,17 @@ struct ip_frag {
 
 /** @internal <src addr, dst_addr, id> to uniquely indetify fragmented datagram. */
 struct ip_frag_key {
-	uint64_t src_dst[4];      /**< src address, first 8 bytes used for IPv4 */
-	uint32_t id;           /**< dst address */
-	uint32_t key_len;      /**< src/dst key length */
+	uint64_t src_dst[4];
+	/**< src and dst address, only first 8 bytes used for IPv4 */
+	RTE_STD_C11
+	union {
+		uint64_t id_key_len; /**< combined for easy fetch */
+		__extension__
+		struct {
+			uint32_t id;       /**< packet id */
+			uint32_t key_len;  /**< src/dst key length */
+		};
+	};
 };
 
 /**
diff --git a/lib/librte_ip_frag/rte_ipv4_reassembly.c b/lib/librte_ip_frag/rte_ipv4_reassembly.c
index 847ea0d6..ede2ae09 100644
--- a/lib/librte_ip_frag/rte_ipv4_reassembly.c
+++ b/lib/librte_ip_frag/rte_ipv4_reassembly.c
@@ -65,8 +65,11 @@ ipv4_frag_reassemble(struct ip_frag_pkt *fp)
 			/* previous fragment found. */
 			if(fp->frags[i].ofs + fp->frags[i].len == ofs) {
 
+				RTE_ASSERT(curr_idx != i);
+
 				/* adjust start of the last fragment data. */
-				rte_pktmbuf_adj(m, (uint16_t)(m->l2_len + m->l3_len));
+				rte_pktmbuf_adj(m,
+					(uint16_t)(m->l2_len + m->l3_len));
 				rte_pktmbuf_chain(fp->frags[i].mb, m);
 
 				/* this mbuf should not be accessed directly */
@@ -125,14 +128,14 @@ ipv4_frag_reassemble(struct ip_frag_pkt *fp)
  */
 struct rte_mbuf *
 rte_ipv4_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
-		struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
-		struct ipv4_hdr *ip_hdr)
+	struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
+	struct ipv4_hdr *ip_hdr)
 {
 	struct ip_frag_pkt *fp;
 	struct ip_frag_key key;
 	const unaligned_uint64_t *psd;
-	uint16_t ip_len;
 	uint16_t flag_offset, ip_ofs, ip_flag;
+	int32_t ip_len;
 
 	flag_offset = rte_be_to_cpu_16(ip_hdr->fragment_offset);
 	ip_ofs = (uint16_t)(flag_offset & IPV4_HDR_OFFSET_MASK);
@@ -145,12 +148,11 @@ rte_ipv4_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
 	key.key_len = IPV4_KEYLEN;
 
 	ip_ofs *= IPV4_HDR_OFFSET_UNITS;
-	ip_len = (uint16_t)(rte_be_to_cpu_16(ip_hdr->total_length) -
-		mb->l3_len);
+	ip_len = rte_be_to_cpu_16(ip_hdr->total_length) - mb->l3_len;
 
 	IP_FRAG_LOG(DEBUG, "%s:%d:\n"
 		"mbuf: %p, tms: %" PRIu64
-		", key: <%" PRIx64 ", %#x>, ofs: %u, len: %u, flags: %#x\n"
+		", key: <%" PRIx64 ", %#x>, ofs: %u, len: %d, flags: %#x\n"
 		"tbl: %p, max_cycles: %" PRIu64 ", entry_mask: %#x, "
 		"max_entries: %u, use_entries: %u\n\n",
 		__func__, __LINE__,
@@ -158,6 +160,12 @@ rte_ipv4_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
 		tbl, tbl->max_cycles, tbl->entry_mask, tbl->max_entries,
 		tbl->use_entries);
 
+	/* check that fragment length is greater then zero. */
+	if (ip_len <= 0) {
+		IP_FRAG_MBUF2DR(dr, mb);
+		return NULL;
+	}
+
 	/* try to find/add entry into the fragment's table. */
 	if ((fp = ip_frag_find(tbl, dr, &key, tms)) == NULL) {
 		IP_FRAG_MBUF2DR(dr, mb);
diff --git a/lib/librte_ip_frag/rte_ipv6_reassembly.c b/lib/librte_ip_frag/rte_ipv6_reassembly.c
index d9b5d690..9f080d6e 100644
--- a/lib/librte_ip_frag/rte_ipv6_reassembly.c
+++ b/lib/librte_ip_frag/rte_ipv6_reassembly.c
@@ -88,8 +88,11 @@ ipv6_frag_reassemble(struct ip_frag_pkt *fp)
 			/* previous fragment found. */
 			if (fp->frags[i].ofs + fp->frags[i].len == ofs) {
 
+				RTE_ASSERT(curr_idx != i);
+
 				/* adjust start of the last fragment data. */
-				rte_pktmbuf_adj(m, (uint16_t)(m->l2_len + m->l3_len));
+				rte_pktmbuf_adj(m,
+					(uint16_t)(m->l2_len + m->l3_len));
 				rte_pktmbuf_chain(fp->frags[i].mb, m);
 
 				/* this mbuf should not be accessed directly */
@@ -164,12 +167,13 @@ ipv6_frag_reassemble(struct ip_frag_pkt *fp)
 #define FRAG_OFFSET(x) (rte_cpu_to_be_16(x) >> 3)
 struct rte_mbuf *
 rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
-		struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
-		struct ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
+	struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
+	struct ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
 {
 	struct ip_frag_pkt *fp;
 	struct ip_frag_key key;
-	uint16_t ip_len, ip_ofs;
+	uint16_t ip_ofs;
+	int32_t ip_len;
 
 	rte_memcpy(&key.src_dst[0], ip_hdr->src_addr, 16);
 	rte_memcpy(&key.src_dst[2], ip_hdr->dst_addr, 16);
@@ -180,15 +184,17 @@ rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
 	ip_ofs = FRAG_OFFSET(frag_hdr->frag_data) * 8;
 
 	/*
-	 * as per RFC2460, payload length contains all extension headers as well.
-	 * since we don't support anything but frag headers, this is what we remove
-	 * from the payload len.
+	 * as per RFC2460, payload length contains all extension headers
+	 * as well.
+	 * since we don't support anything but frag headers,
+	 * this is what we remove from the payload len.
 	 */
 	ip_len = rte_be_to_cpu_16(ip_hdr->payload_len) - sizeof(*frag_hdr);
 
 	IP_FRAG_LOG(DEBUG, "%s:%d:\n"
 		"mbuf: %p, tms: %" PRIu64
-		", key: <" IPv6_KEY_BYTES_FMT ", %#x>, ofs: %u, len: %u, flags: %#x\n"
+		", key: <" IPv6_KEY_BYTES_FMT ", %#x>, "
+		"ofs: %u, len: %d, flags: %#x\n"
 		"tbl: %p, max_cycles: %" PRIu64 ", entry_mask: %#x, "
 		"max_entries: %u, use_entries: %u\n\n",
 		__func__, __LINE__,
@@ -197,6 +203,12 @@ rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
 		tbl, tbl->max_cycles, tbl->entry_mask, tbl->max_entries,
 		tbl->use_entries);
 
+	/* check that fragment length is greater then zero. */
+	if (ip_len <= 0) {
+		IP_FRAG_MBUF2DR(dr, mb);
+		return NULL;
+	}
+
 	/* try to find/add entry into the fragment's table. */
 	fp = ip_frag_find(tbl, dr, &key, tms);
 	if (fp == NULL) {
diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index 0c6641bf..12656a9d 100644
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -532,7 +532,7 @@ int
 rte_kni_handle_request(struct rte_kni *kni)
 {
 	unsigned ret;
-	struct rte_kni_request *req;
+	struct rte_kni_request *req = NULL;
 
 	if (kni == NULL)
 		return -1;
diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index 5504c6df..476b8c1d 100644
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -160,6 +160,9 @@ rte_kvargs_process(const struct rte_kvargs *kvlist,
 	const struct rte_kvargs_pair *pair;
 	unsigned i;
 
+	if (kvlist == NULL)
+		return 0;
+
 	for (i = 0; i < kvlist->count; i++) {
 		pair = &kvlist->pairs[i];
 		if (key_match == NULL || strcmp(pair->key, key_match) == 0) {
diff --git a/lib/librte_kvargs/rte_kvargs.h b/lib/librte_kvargs/rte_kvargs.h
index ae9ae79f..83363a8d 100644
--- a/lib/librte_kvargs/rte_kvargs.h
+++ b/lib/librte_kvargs/rte_kvargs.h
@@ -106,7 +106,7 @@ struct rte_kvargs *rte_kvargs_parse(const char *args, const char *valid_keys[]);
  * rte_kvargs_parse().
  *
  * @param kvlist
- *   The rte_kvargs structure
+ *   The rte_kvargs structure. No error if NULL.
  */
 void rte_kvargs_free(struct rte_kvargs *kvlist);
 
@@ -115,11 +115,10 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
  *
  * For each key/value association that matches the given key, calls the
  * handler function with the for a given arg_name passing the value on the
- * dictionary for that key and a given extra argument. If *kvlist* is NULL
- * function does nothing.
+ * dictionary for that key and a given extra argument.
  *
  * @param kvlist
- *   The rte_kvargs structure
+ *   The rte_kvargs structure. No error if NULL.
  * @param key_match
  *   The key on which the handler should be called, or NULL to process handler
  *   on all associations
diff --git a/lib/librte_net/rte_gre.h b/lib/librte_net/rte_gre.h
index 46568ff5..8a3414cf 100644
--- a/lib/librte_net/rte_gre.h
+++ b/lib/librte_net/rte_gre.h
@@ -43,6 +43,7 @@ extern "C" {
 /**
  * GRE Header
  */
+__extension__
 struct gre_hdr {
 #if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
 	uint16_t res2:4; /**< Reserved */
diff --git a/lib/librte_sched/rte_bitmap.h b/lib/librte_sched/rte_bitmap.h
index bbf4da94..6828a7c3 100644
--- a/lib/librte_sched/rte_bitmap.h
+++ b/lib/librte_sched/rte_bitmap.h
@@ -116,7 +116,7 @@ __rte_bitmap_index1_inc(struct rte_bitmap *bmp)
 static inline uint64_t
 __rte_bitmap_mask1_get(struct rte_bitmap *bmp)
 {
-	return (~1lu) << bmp->offset1;
+	return (~1llu) << bmp->offset1;
 }
 
 static inline void
@@ -345,7 +345,7 @@ rte_bitmap_get(struct rte_bitmap *bmp, uint32_t pos)
 	index2 = pos >> RTE_BITMAP_SLAB_BIT_SIZE_LOG2;
 	offset2 = pos & RTE_BITMAP_SLAB_BIT_MASK;
 	slab2 = bmp->array2 + index2;
-	return (*slab2) & (1lu << offset2);
+	return (*slab2) & (1llu << offset2);
 }
 
 /**
@@ -370,8 +370,8 @@ rte_bitmap_set(struct rte_bitmap *bmp, uint32_t pos)
 	slab2 = bmp->array2 + index2;
 	slab1 = bmp->array1 + index1;
 
-	*slab2 |= 1lu << offset2;
-	*slab1 |= 1lu << offset1;
+	*slab2 |= 1llu << offset2;
+	*slab1 |= 1llu << offset1;
 }
 
 /**
@@ -398,7 +398,7 @@ rte_bitmap_set_slab(struct rte_bitmap *bmp, uint32_t pos, uint64_t slab)
 	slab1 = bmp->array1 + index1;
 
 	*slab2 |= slab;
-	*slab1 |= 1lu << offset1;
+	*slab1 |= 1llu << offset1;
 }
 
 static inline uint64_t
@@ -436,7 +436,7 @@ rte_bitmap_clear(struct rte_bitmap *bmp, uint32_t pos)
 	slab2 = bmp->array2 + index2;
 
 	/* Return if array2 slab is not all-zeros */
-	*slab2 &= ~(1lu << offset2);
+	*slab2 &= ~(1llu << offset2);
 	if (*slab2){
 		return;
 	}
@@ -452,7 +452,7 @@ rte_bitmap_clear(struct rte_bitmap *bmp, uint32_t pos)
 	index1 = pos >> (RTE_BITMAP_SLAB_BIT_SIZE_LOG2 + RTE_BITMAP_CL_BIT_SIZE_LOG2);
 	offset1 = (pos >> RTE_BITMAP_CL_BIT_SIZE_LOG2) & RTE_BITMAP_SLAB_BIT_MASK;
 	slab1 = bmp->array1 + index1;
-	*slab1 &= ~(1lu << offset1);
+	*slab1 &= ~(1llu << offset1);
 
 	return;
 }
diff --git a/lib/librte_sched/rte_reciprocal.c b/lib/librte_sched/rte_reciprocal.c
index 652f0237..385109cd 100644
--- a/lib/librte_sched/rte_reciprocal.c
+++ b/lib/librte_sched/rte_reciprocal.c
@@ -38,28 +38,13 @@
 
 #include "rte_reciprocal.h"
 
-/* find largest set bit.
- * portable and slow but does not matter for this usage.
- */
-static inline int fls(uint32_t x)
-{
-	int b;
-
-	for (b = 31; b >= 0; --b) {
-		if (x & (1u << b))
-			return b + 1;
-	}
-
-	return 0;
-}
-
 struct rte_reciprocal rte_reciprocal_value(uint32_t d)
 {
 	struct rte_reciprocal R;
 	uint64_t m;
 	int l;
 
-	l = fls(d - 1);
+	l = rte_fls_u32(d - 1);
 	m = ((1ULL << 32) * ((1ULL << l) - d));
 	m /= d;
 
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 04c92ceb..618d413f 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -741,7 +741,7 @@ vhost_user_set_vring_call(struct virtio_net *dev, struct VhostUserMsg *pmsg)
  *  In vhost-user, when we receive kick message, will test whether virtio
  *  device is ready for packet processing.
  */
-static void
+static int
 vhost_user_set_vring_kick(struct virtio_net *dev, struct VhostUserMsg *pmsg)
 {
 	struct vhost_vring_file file;
@@ -769,6 +769,8 @@ vhost_user_set_vring_kick(struct virtio_net *dev, struct VhostUserMsg *pmsg)
 		if (notify_ops->new_device(dev->vid) == 0)
 			dev->flags |= VIRTIO_DEV_RUNNING;
 	}
+
+	return 0;
 }
 
 static void
@@ -847,14 +849,19 @@ vhost_user_set_vring_enable(struct virtio_net *dev,
 	return 0;
 }
 
-static void
+static int
 vhost_user_set_protocol_features(struct virtio_net *dev,
 				 uint64_t protocol_features)
 {
-	if (protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
-		return;
+	if (protocol_features & ~VHOST_USER_PROTOCOL_FEATURES) {
+		RTE_LOG(ERR, VHOST_CONFIG,
+			"(%d) received invalid protocol features.\n",
+			dev->vid);
+		return -1;
+	}
 
 	dev->protocol_features = protocol_features;
+	return 0;
 }
 
 static int
@@ -949,7 +956,7 @@ read_vhost_message(int sockfd, struct VhostUserMsg *msg)
 	if (ret <= 0)
 		return ret;
 
-	if (msg && msg->size) {
+	if (msg->size) {
 		if (msg->size > sizeof(msg->payload)) {
 			RTE_LOG(ERR, VHOST_CONFIG,
 				"invalid msg size: %d\n", msg->size);
@@ -1080,6 +1087,7 @@ vhost_user_msg_handler(int vid, int fd)
 
 	}
 
+	ret = 0;
 	switch (msg.request) {
 	case VHOST_USER_GET_FEATURES:
 		msg.payload.u64 = vhost_user_get_features();
@@ -1087,7 +1095,7 @@ vhost_user_msg_handler(int vid, int fd)
 		send_vhost_message(fd, &msg);
 		break;
 	case VHOST_USER_SET_FEATURES:
-		vhost_user_set_features(dev, msg.payload.u64);
+		ret = vhost_user_set_features(dev, msg.payload.u64);
 		break;
 
 	case VHOST_USER_GET_PROTOCOL_FEATURES:
@@ -1096,14 +1104,14 @@ vhost_user_msg_handler(int vid, int fd)
 		send_vhost_message(fd, &msg);
 		break;
 	case VHOST_USER_SET_PROTOCOL_FEATURES:
-		vhost_user_set_protocol_features(dev, msg.payload.u64);
+		ret = vhost_user_set_protocol_features(dev, msg.payload.u64);
 		break;
 
 	case VHOST_USER_SET_OWNER:
-		vhost_user_set_owner();
+		ret = vhost_user_set_owner();
 		break;
 	case VHOST_USER_RESET_OWNER:
-		vhost_user_reset_owner(dev);
+		ret = vhost_user_reset_owner(dev);
 		break;
 
 	case VHOST_USER_SET_MEM_TABLE:
@@ -1111,10 +1119,14 @@ vhost_user_msg_handler(int vid, int fd)
 		break;
 
 	case VHOST_USER_SET_LOG_BASE:
-		vhost_user_set_log_base(dev, &msg);
-
-		/* it needs a reply */
-		msg.size = sizeof(msg.payload.u64);
+		ret = vhost_user_set_log_base(dev, &msg);
+		if (ret)
+			break;
+		/*
+		 * The spec is not clear about it (yet), but QEMU doesn't expect
+		 * any payload in the reply. But a reply is required.
+		 */
+		msg.size = 0;
 		send_vhost_message(fd, &msg);
 		break;
 	case VHOST_USER_SET_LOG_FD:
@@ -1123,23 +1135,25 @@ vhost_user_msg_handler(int vid, int fd)
 		break;
 
 	case VHOST_USER_SET_VRING_NUM:
-		vhost_user_set_vring_num(dev, &msg.payload.state);
+		ret = vhost_user_set_vring_num(dev, &msg.payload.state);
 		break;
 	case VHOST_USER_SET_VRING_ADDR:
-		vhost_user_set_vring_addr(&dev, &msg.payload.addr);
+		ret = vhost_user_set_vring_addr(&dev, &msg.payload.addr);
 		break;
 	case VHOST_USER_SET_VRING_BASE:
-		vhost_user_set_vring_base(dev, &msg.payload.state);
+		ret = vhost_user_set_vring_base(dev, &msg.payload.state);
 		break;
 
 	case VHOST_USER_GET_VRING_BASE:
 		ret = vhost_user_get_vring_base(dev, &msg.payload.state);
+		if (ret)
+			break;
 		msg.size = sizeof(msg.payload.state);
 		send_vhost_message(fd, &msg);
 		break;
 
 	case VHOST_USER_SET_VRING_KICK:
-		vhost_user_set_vring_kick(dev, &msg);
+		ret = vhost_user_set_vring_kick(dev, &msg);
 		break;
 	case VHOST_USER_SET_VRING_CALL:
 		vhost_user_set_vring_call(dev, &msg);
@@ -1158,10 +1172,10 @@ vhost_user_msg_handler(int vid, int fd)
 		break;
 
 	case VHOST_USER_SET_VRING_ENABLE:
-		vhost_user_set_vring_enable(dev, &msg.payload.state);
+		ret = vhost_user_set_vring_enable(dev, &msg.payload.state);
 		break;
 	case VHOST_USER_SEND_RARP:
-		vhost_user_send_rarp(dev, &msg);
+		ret = vhost_user_send_rarp(dev, &msg);
 		break;
 
 	default:
@@ -1172,5 +1186,11 @@ vhost_user_msg_handler(int vid, int fd)
 	if (unlock_required)
 		vhost_user_unlock_all_queue_pairs(dev);
 
+	if (ret) {
+		RTE_LOG(ERR, VHOST_CONFIG,
+			"vhost message handling failed.\n");
+		return -1;
+	}
+
 	return 0;
 }
diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index cfd69cea..eaee1c78 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -272,7 +272,7 @@ flush_shadow_used_ring(struct virtio_net *dev, struct vhost_virtqueue *vq)
 
 static inline void __attribute__((always_inline))
 update_shadow_used_ring(struct vhost_virtqueue *vq,
-			 uint16_t desc_idx, uint16_t len)
+			 uint16_t desc_idx, uint32_t len)
 {
 	uint16_t i = vq->shadow_used_idx++;
 
@@ -610,7 +610,7 @@ static inline int __attribute__((always_inline))
 fill_vec_buf(struct virtio_net *dev, struct vhost_virtqueue *vq,
 			 uint32_t avail_idx, uint32_t *vec_idx,
 			 struct buf_vector *buf_vec, uint16_t *desc_chain_head,
-			 uint16_t *desc_chain_len)
+			 uint32_t *desc_chain_len)
 {
 	uint16_t idx = vq->avail->ring[avail_idx & (vq->size - 1)];
 	uint32_t vec_id = *vec_idx;
@@ -684,7 +684,7 @@ reserve_avail_buf_mergeable(struct virtio_net *dev, struct vhost_virtqueue *vq,
 	uint16_t tries = 0;
 
 	uint16_t head_idx = 0;
-	uint16_t len = 0;
+	uint32_t len = 0;
 
 	*num_buffers = 0;
 	cur_idx  = vq->last_avail_idx;