Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

In netdevice.h we removed the structure in net-next that is being
changes in 'net'.  In macsec.c and rtnetlink.c we have overlaps
between fixes in 'net' and the u64 attribute changes in 'net-next'.

The mlx5 conflicts have to do with vxlan support dependencies.

Signed-off-by: David S. Miller <davem@davemloft.net>

12 files changed, 128 insertions, 96 deletions

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 14362a84c78e..3a932501d690 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -394,13 +394,13 @@ struct acpi_data_node {
 
 static inline bool is_acpi_node(struct fwnode_handle *fwnode)
 {
-	return fwnode && (fwnode->type == FWNODE_ACPI
+	return !IS_ERR_OR_NULL(fwnode) && (fwnode->type == FWNODE_ACPI
 		|| fwnode->type == FWNODE_ACPI_DATA);
 }
 
 static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)
 {
-	return fwnode && fwnode->type == FWNODE_ACPI;
+	return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_ACPI;
 }
 
 static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index eeae401a2412..3d5202eda22f 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -246,7 +246,7 @@
 #define __HAVE_BUILTIN_BSWAP32__
 #define __HAVE_BUILTIN_BSWAP64__
 #endif
-#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)
+#if GCC_VERSION >= 40800
 #define __HAVE_BUILTIN_BSWAP16__
 #endif
 #endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
diff --git a/include/linux/of.h b/include/linux/of.h
index 7fcb681baadf..31758036787c 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -133,7 +133,7 @@ void of_core_init(void);
 
 static inline bool is_of_node(struct fwnode_handle *fwnode)
 {
-	return fwnode && fwnode->type == FWNODE_OF;
+	return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_OF;
 }
 
 static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index f4ed4f1b0c77..6b052aa7b5b7 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -517,6 +517,27 @@ static inline int PageTransCompound(struct page *page)
 }
 
 /*
+ * PageTransCompoundMap is the same as PageTransCompound, but it also
+ * guarantees the primary MMU has the entire compound page mapped
+ * through pmd_trans_huge, which in turn guarantees the secondary MMUs
+ * can also map the entire compound page. This allows the secondary
+ * MMUs to call get_user_pages() only once for each compound page and
+ * to immediately map the entire compound page with a single secondary
+ * MMU fault. If there will be a pmd split later, the secondary MMUs
+ * will get an update through the MMU notifier invalidation through
+ * split_huge_pmd().
+ *
+ * Unlike PageTransCompound, this is safe to be called only while
+ * split_huge_pmd() cannot run from under us, like if protected by the
+ * MMU notifier, otherwise it may result in page->_mapcount < 0 false
+ * positives.
+ */
+static inline int PageTransCompoundMap(struct page *page)
+{
+	return PageTransCompound(page) && atomic_read(&page->_mapcount) < 0;
+}
+
+/*
  * PageTransTail returns true for both transparent huge pages
  * and hugetlbfs pages, so it should only be called when it's known
  * that hugetlbfs pages aren't involved.
@@ -559,6 +580,7 @@ static inline int TestClearPageDoubleMap(struct page *page)
 #else
 TESTPAGEFLAG_FALSE(TransHuge)
 TESTPAGEFLAG_FALSE(TransCompound)
+TESTPAGEFLAG_FALSE(TransCompoundMap)
 TESTPAGEFLAG_FALSE(TransTail)
 TESTPAGEFLAG_FALSE(DoubleMap)
 	TESTSETFLAG_FALSE(DoubleMap)
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 2b83359c19ca..0a4cd4703f40 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -533,6 +533,10 @@ static inline swp_entry_t get_swap_page(void)
 #ifdef CONFIG_MEMCG
 static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg)
 {
+	/* Cgroup2 doesn't have per-cgroup swappiness */
+	if (cgroup_subsys_on_dfl(memory_cgrp_subsys))
+		return vm_swappiness;
+
 	/* root ? */
 	if (mem_cgroup_disabled() || !memcg->css.parent)
 		return vm_swappiness;
diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
index 730d82ad6ee5..24cd3949a9a4 100644
--- a/include/net/netns/xfrm.h
+++ b/include/net/netns/xfrm.h
@@ -80,6 +80,7 @@ struct netns_xfrm {
 	struct flow_cache	flow_cache_global;
 	atomic_t		flow_cache_genid;
 	struct list_head	flow_cache_gc_list;
+	atomic_t		flow_cache_gc_count;
 	spinlock_t		flow_cache_gc_lock;
 	struct work_struct	flow_cache_gc_work;
 	struct work_struct	flow_cache_flush_work;
diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index 4f543262dd81..9d14f707e534 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -112,15 +112,6 @@ static inline int udp_tunnel_handle_offloads(struct sk_buff *skb, bool udp_csum)
 	return iptunnel_handle_offloads(skb, type);
 }
 
-static inline void udp_tunnel_gro_complete(struct sk_buff *skb, int nhoff)
-{
-	struct udphdr *uh;
-
-	uh = (struct udphdr *)(skb->data + nhoff - sizeof(struct udphdr));
-	skb_shinfo(skb)->gso_type |= uh->check ?
-				SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
-}
-
 static inline void udp_tunnel_encap_enable(struct socket *sock)
 {
 #if IS_ENABLED(CONFIG_IPV6)
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 6e0f5f01734c..c51afb71bfab 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -718,9 +718,9 @@ __SYSCALL(__NR_mlock2, sys_mlock2)
 #define __NR_copy_file_range 285
 __SYSCALL(__NR_copy_file_range, sys_copy_file_range)
 #define __NR_preadv2 286
-__SYSCALL(__NR_preadv2, sys_preadv2)
+__SC_COMP(__NR_preadv2, sys_preadv2, compat_sys_preadv2)
 #define __NR_pwritev2 287
-__SYSCALL(__NR_pwritev2, sys_pwritev2)
+__SC_COMP(__NR_pwritev2, sys_pwritev2, compat_sys_pwritev2)
 
 #undef __NR_syscalls
 #define __NR_syscalls 288
diff --git a/include/uapi/linux/if_macsec.h b/include/uapi/linux/if_macsec.h
index 897a94942245..f7d4831a2cc7 100644
--- a/include/uapi/linux/if_macsec.h
+++ b/include/uapi/linux/if_macsec.h
@@ -19,6 +19,8 @@
 
 #define MACSEC_MAX_KEY_LEN 128
 
+#define MACSEC_KEYID_LEN 16
+
 #define MACSEC_DEFAULT_CIPHER_ID   0x0080020001000001ULL
 #define MACSEC_DEFAULT_CIPHER_ALT  0x0080C20001000001ULL
 
@@ -79,7 +81,7 @@ enum macsec_sa_attrs {
 	MACSEC_SA_ATTR_ACTIVE, /* config/dump, u8 0..1 */
 	MACSEC_SA_ATTR_PN,     /* config/dump, u32 */
 	MACSEC_SA_ATTR_KEY,    /* config, data */
-	MACSEC_SA_ATTR_KEYID,  /* config/dump, u64 */
+	MACSEC_SA_ATTR_KEYID,  /* config/dump, 128-bit */
 	MACSEC_SA_ATTR_STATS,  /* dump, nested, macsec_sa_stats_attr */
 	MACSEC_SA_ATTR_PAD,
 	__MACSEC_SA_ATTR_END,
diff --git a/include/linux/rio_mport_cdev.h b/include/uapi/linux/rio_mport_cdev.h
index b65d19df76d2..5796bf1d06ad 100644
--- a/include/linux/rio_mport_cdev.h
+++ b/include/uapi/linux/rio_mport_cdev.h
@@ -39,16 +39,16 @@
 #ifndef _RIO_MPORT_CDEV_H_
 #define _RIO_MPORT_CDEV_H_
 
-#ifndef __user
-#define __user
-#endif
+#include <linux/ioctl.h>
+#include <linux/types.h>
 
 struct rio_mport_maint_io {
-	uint32_t rioid;		/* destID of remote device */
-	uint32_t hopcount;	/* hopcount to remote device */
-	uint32_t offset;	/* offset in register space */
-	size_t length;		/* length in bytes */
-	void __user *buffer;	/* data buffer */
+	__u16 rioid;		/* destID of remote device */
+	__u8  hopcount;		/* hopcount to remote device */
+	__u8  pad0[5];
+	__u32 offset;		/* offset in register space */
+	__u32 length;		/* length in bytes */
+	__u64 buffer;		/* pointer to data buffer */
 };
 
 /*
@@ -66,22 +66,23 @@ struct rio_mport_maint_io {
 #define RIO_CAP_MAP_INB			(1 << 7)
 
 struct rio_mport_properties {
-	uint16_t hdid;
-	uint8_t id;			/* Physical port ID */
-	uint8_t  index;
-	uint32_t flags;
-	uint32_t sys_size;		/* Default addressing size */
-	uint8_t  port_ok;
-	uint8_t  link_speed;
-	uint8_t  link_width;
-	uint32_t dma_max_sge;
-	uint32_t dma_max_size;
-	uint32_t dma_align;
-	uint32_t transfer_mode;		/* Default transfer mode */
-	uint32_t cap_sys_size;		/* Capable system sizes */
-	uint32_t cap_addr_size;		/* Capable addressing sizes */
-	uint32_t cap_transfer_mode;	/* Capable transfer modes */
-	uint32_t cap_mport;		/* Mport capabilities */
+	__u16 hdid;
+	__u8  id;			/* Physical port ID */
+	__u8  index;
+	__u32 flags;
+	__u32 sys_size;		/* Default addressing size */
+	__u8  port_ok;
+	__u8  link_speed;
+	__u8  link_width;
+	__u8  pad0;
+	__u32 dma_max_sge;
+	__u32 dma_max_size;
+	__u32 dma_align;
+	__u32 transfer_mode;		/* Default transfer mode */
+	__u32 cap_sys_size;		/* Capable system sizes */
+	__u32 cap_addr_size;		/* Capable addressing sizes */
+	__u32 cap_transfer_mode;	/* Capable transfer modes */
+	__u32 cap_mport;		/* Mport capabilities */
 };
 
 /*
@@ -93,54 +94,57 @@ struct rio_mport_properties {
 #define RIO_PORTWRITE	(1 << 1)
 
 struct rio_doorbell {
-	uint32_t rioid;
-	uint16_t payload;
+	__u16 rioid;
+	__u16 payload;
 };
 
 struct rio_doorbell_filter {
-	uint32_t rioid;			/* 0xffffffff to match all ids */
-	uint16_t low;
-	uint16_t high;
+	__u16 rioid;	/* Use RIO_INVALID_DESTID to match all ids */
+	__u16 low;
+	__u16 high;
+	__u16 pad0;
 };
 
 
 struct rio_portwrite {
-	uint32_t payload[16];
+	__u32 payload[16];
 };
 
 struct rio_pw_filter {
-	uint32_t mask;
-	uint32_t low;
-	uint32_t high;
+	__u32 mask;
+	__u32 low;
+	__u32 high;
+	__u32 pad0;
 };
 
 /* RapidIO base address for inbound requests set to value defined below
  * indicates that no specific RIO-to-local address translation is requested
  * and driver should use direct (one-to-one) address mapping.
 */
-#define RIO_MAP_ANY_ADDR	(uint64_t)(~((uint64_t) 0))
+#define RIO_MAP_ANY_ADDR	(__u64)(~((__u64) 0))
 
 struct rio_mmap {
-	uint32_t rioid;
-	uint64_t rio_addr;
-	uint64_t length;
-	uint64_t handle;
-	void *address;
+	__u16 rioid;
+	__u16 pad0[3];
+	__u64 rio_addr;
+	__u64 length;
+	__u64 handle;
+	__u64 address;
 };
 
 struct rio_dma_mem {
-	uint64_t length;		/* length of DMA memory */
-	uint64_t dma_handle;		/* handle associated with this memory */
-	void *buffer;			/* pointer to this memory */
+	__u64 length;		/* length of DMA memory */
+	__u64 dma_handle;	/* handle associated with this memory */
+	__u64 address;
 };
 
-
 struct rio_event {
-	unsigned int header;	/* event type RIO_DOORBELL or RIO_PORTWRITE */
+	__u32 header;	/* event type RIO_DOORBELL or RIO_PORTWRITE */
 	union {
 		struct rio_doorbell doorbell;	/* header for RIO_DOORBELL */
 		struct rio_portwrite portwrite; /* header for RIO_PORTWRITE */
 	} u;
+	__u32 pad0;
 };
 
 enum rio_transfer_sync {
@@ -184,35 +188,37 @@ enum rio_exchange {
 };
 
 struct rio_transfer_io {
-	uint32_t rioid;			/* Target destID */
-	uint64_t rio_addr;		/* Address in target's RIO mem space */
-	enum rio_exchange method;	/* Data exchange method */
-	void __user *loc_addr;
-	uint64_t handle;
-	uint64_t offset;		/* Offset in buffer */
-	uint64_t length;		/* Length in bytes */
-	uint32_t completion_code;	/* Completion code for this transfer */
+	__u64 rio_addr;	/* Address in target's RIO mem space */
+	__u64 loc_addr;
+	__u64 handle;
+	__u64 offset;	/* Offset in buffer */
+	__u64 length;	/* Length in bytes */
+	__u16 rioid;	/* Target destID */
+	__u16 method;	/* Data exchange method, one of rio_exchange enum */
+	__u32 completion_code;	/* Completion code for this transfer */
 };
 
 struct rio_transaction {
-	uint32_t transfer_mode;		/* Data transfer mode */
-	enum rio_transfer_sync sync;	/* Synchronization method */
-	enum rio_transfer_dir dir;	/* Transfer direction */
-	size_t count;			/* Number of transfers */
-	struct rio_transfer_io __user *block;	/* Array of <count> transfers */
+	__u64 block;	/* Pointer to array of <count> transfers */
+	__u32 count;	/* Number of transfers */
+	__u32 transfer_mode;	/* Data transfer mode */
+	__u16 sync;	/* Synch method, one of rio_transfer_sync enum */
+	__u16 dir;	/* Transfer direction, one of rio_transfer_dir enum */
+	__u32 pad0;
 };
 
 struct rio_async_tx_wait {
-	uint32_t token;		/* DMA transaction ID token */
-	uint32_t timeout;	/* Wait timeout in msec, if 0 use default TO */
+	__u32 token;	/* DMA transaction ID token */
+	__u32 timeout;	/* Wait timeout in msec, if 0 use default TO */
 };
 
 #define RIO_MAX_DEVNAME_SZ	20
 
 struct rio_rdev_info {
-	uint32_t destid;
-	uint8_t hopcount;
-	uint32_t comptag;
+	__u16 destid;
+	__u8 hopcount;
+	__u8 pad0;
+	__u32 comptag;
 	char name[RIO_MAX_DEVNAME_SZ + 1];
 };
 
@@ -220,11 +226,11 @@ struct rio_rdev_info {
 #define RIO_MPORT_DRV_MAGIC           'm'
 
 #define RIO_MPORT_MAINT_HDID_SET	\
-	_IOW(RIO_MPORT_DRV_MAGIC, 1, uint16_t)
+	_IOW(RIO_MPORT_DRV_MAGIC, 1, __u16)
 #define RIO_MPORT_MAINT_COMPTAG_SET	\
-	_IOW(RIO_MPORT_DRV_MAGIC, 2, uint32_t)
+	_IOW(RIO_MPORT_DRV_MAGIC, 2, __u32)
 #define RIO_MPORT_MAINT_PORT_IDX_GET	\
-	_IOR(RIO_MPORT_DRV_MAGIC, 3, uint32_t)
+	_IOR(RIO_MPORT_DRV_MAGIC, 3, __u32)
 #define RIO_MPORT_GET_PROPERTIES \
 	_IOR(RIO_MPORT_DRV_MAGIC, 4, struct rio_mport_properties)
 #define RIO_MPORT_MAINT_READ_LOCAL \
@@ -244,9 +250,9 @@ struct rio_rdev_info {
 #define RIO_DISABLE_PORTWRITE_RANGE	\
 	_IOW(RIO_MPORT_DRV_MAGIC, 12, struct rio_pw_filter)
 #define RIO_SET_EVENT_MASK		\
-	_IOW(RIO_MPORT_DRV_MAGIC, 13, unsigned int)
+	_IOW(RIO_MPORT_DRV_MAGIC, 13, __u32)
 #define RIO_GET_EVENT_MASK		\
-	_IOR(RIO_MPORT_DRV_MAGIC, 14, unsigned int)
+	_IOR(RIO_MPORT_DRV_MAGIC, 14, __u32)
 #define RIO_MAP_OUTBOUND \
 	_IOWR(RIO_MPORT_DRV_MAGIC, 15, struct rio_mmap)
 #define RIO_UNMAP_OUTBOUND \
@@ -254,11 +260,11 @@ struct rio_rdev_info {
 #define RIO_MAP_INBOUND \
 	_IOWR(RIO_MPORT_DRV_MAGIC, 17, struct rio_mmap)
 #define RIO_UNMAP_INBOUND \
-	_IOW(RIO_MPORT_DRV_MAGIC, 18, uint64_t)
+	_IOW(RIO_MPORT_DRV_MAGIC, 18, __u64)
 #define RIO_ALLOC_DMA \
 	_IOWR(RIO_MPORT_DRV_MAGIC, 19, struct rio_dma_mem)
 #define RIO_FREE_DMA \
-	_IOW(RIO_MPORT_DRV_MAGIC, 20, uint64_t)
+	_IOW(RIO_MPORT_DRV_MAGIC, 20, __u64)
 #define RIO_TRANSFER \
 	_IOWR(RIO_MPORT_DRV_MAGIC, 21, struct rio_transaction)
 #define RIO_WAIT_FOR_ASYNC \
diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 3f10e5317b46..8f3a8f606fd9 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -45,9 +45,7 @@
 
 static inline __attribute_const__ __u16 __fswab16(__u16 val)
 {
-#ifdef __HAVE_BUILTIN_BSWAP16__
-	return __builtin_bswap16(val);
-#elif defined (__arch_swab16)
+#if defined (__arch_swab16)
 	return __arch_swab16(val);
 #else
 	return ___constant_swab16(val);
@@ -56,9 +54,7 @@ static inline __attribute_const__ __u16 __fswab16(__u16 val)
 
 static inline __attribute_const__ __u32 __fswab32(__u32 val)
 {
-#ifdef __HAVE_BUILTIN_BSWAP32__
-	return __builtin_bswap32(val);
-#elif defined(__arch_swab32)
+#if defined(__arch_swab32)
 	return __arch_swab32(val);
 #else
 	return ___constant_swab32(val);
@@ -67,9 +63,7 @@ static inline __attribute_const__ __u32 __fswab32(__u32 val)
 
 static inline __attribute_const__ __u64 __fswab64(__u64 val)
 {
-#ifdef __HAVE_BUILTIN_BSWAP64__
-	return __builtin_bswap64(val);
-#elif defined (__arch_swab64)
+#if defined (__arch_swab64)
 	return __arch_swab64(val);
 #elif defined(__SWAB_64_THRU_32__)
 	__u32 h = val >> 32;
@@ -102,28 +96,40 @@ static inline __attribute_const__ __u32 __fswahb32(__u32 val)
  * __swab16 - return a byteswapped 16-bit value
  * @x: value to byteswap
  */
+#ifdef __HAVE_BUILTIN_BSWAP16__
+#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
+#else
 #define __swab16(x)				\
 	(__builtin_constant_p((__u16)(x)) ?	\
 	___constant_swab16(x) :			\
 	__fswab16(x))
+#endif
 
 /**
  * __swab32 - return a byteswapped 32-bit value
  * @x: value to byteswap
  */
+#ifdef __HAVE_BUILTIN_BSWAP32__
+#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
+#else
 #define __swab32(x)				\
 	(__builtin_constant_p((__u32)(x)) ?	\
 	___constant_swab32(x) :			\
 	__fswab32(x))
+#endif
 
 /**
  * __swab64 - return a byteswapped 64-bit value
  * @x: value to byteswap
  */
+#ifdef __HAVE_BUILTIN_BSWAP64__
+#define __swab64(x) (__u64)__builtin_bswap64((__u64)(x))
+#else
 #define __swab64(x)				\
 	(__builtin_constant_p((__u64)(x)) ?	\
 	___constant_swab64(x) :			\
 	__fswab64(x))
+#endif
 
 /**
  * __swahw32 - return a word-swapped 32-bit value
diff --git a/include/xen/page.h b/include/xen/page.h
index 96294ac93755..9dc46cb8a0fd 100644
--- a/include/xen/page.h
+++ b/include/xen/page.h
@@ -15,9 +15,9 @@
  */
 
 #define xen_pfn_to_page(xen_pfn)	\
-	((pfn_to_page(((unsigned long)(xen_pfn) << XEN_PAGE_SHIFT) >> PAGE_SHIFT)))
+	(pfn_to_page((unsigned long)(xen_pfn) >> (PAGE_SHIFT - XEN_PAGE_SHIFT)))
 #define page_to_xen_pfn(page)		\
-	(((page_to_pfn(page)) << PAGE_SHIFT) >> XEN_PAGE_SHIFT)
+	((page_to_pfn(page)) << (PAGE_SHIFT - XEN_PAGE_SHIFT))
 
 #define XEN_PFN_PER_PAGE	(PAGE_SIZE / XEN_PAGE_SIZE)