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

Conflicts:
	net/ipv4/ip_gre.c

Minor conflicts between tunnel bug fixes in net and
ipv6 tunnel cleanups in net-next.

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

13 files changed, 66 insertions, 20 deletions

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index f63afdc43bec..8ee27b8afe81 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -180,12 +180,13 @@ void bpf_register_prog_type(struct bpf_prog_type_list *tl);
 void bpf_register_map_type(struct bpf_map_type_list *tl);
 
 struct bpf_prog *bpf_prog_get(u32 ufd);
+struct bpf_prog *bpf_prog_inc(struct bpf_prog *prog);
 void bpf_prog_put(struct bpf_prog *prog);
 void bpf_prog_put_rcu(struct bpf_prog *prog);
 
 struct bpf_map *bpf_map_get_with_uref(u32 ufd);
 struct bpf_map *__bpf_map_get(struct fd f);
-void bpf_map_inc(struct bpf_map *map, bool uref);
+struct bpf_map *bpf_map_inc(struct bpf_map *map, bool uref);
 void bpf_map_put_with_uref(struct bpf_map *map);
 void bpf_map_put(struct bpf_map *map);
 int bpf_map_precharge_memlock(u32 pages);
diff --git a/include/linux/ceph/auth.h b/include/linux/ceph/auth.h
index 260d78b587c4..1563265d2097 100644
--- a/include/linux/ceph/auth.h
+++ b/include/linux/ceph/auth.h
@@ -12,9 +12,12 @@
  */
 
 struct ceph_auth_client;
-struct ceph_authorizer;
 struct ceph_msg;
 
+struct ceph_authorizer {
+        void (*destroy)(struct ceph_authorizer *);
+};
+
 struct ceph_auth_handshake {
         struct ceph_authorizer *authorizer;
         void *authorizer_buf;
@@ -62,8 +65,6 @@ struct ceph_auth_client_ops {
                                  struct ceph_auth_handshake *auth);
         int (*verify_authorizer_reply)(struct ceph_auth_client *ac,
                                        struct ceph_authorizer *a, size_t len);
-        void (*destroy_authorizer)(struct ceph_auth_client *ac,
-                                   struct ceph_authorizer *a);
         void (*invalidate_authorizer)(struct ceph_auth_client *ac,
                                       int peer_type);
 
@@ -112,8 +113,7 @@ extern int ceph_auth_is_authenticated(struct ceph_auth_client *ac);
 extern int ceph_auth_create_authorizer(struct ceph_auth_client *ac,
                                        int peer_type,
                                        struct ceph_auth_handshake *auth);
-extern void ceph_auth_destroy_authorizer(struct ceph_auth_client *ac,
-                                         struct ceph_authorizer *a);
+void ceph_auth_destroy_authorizer(struct ceph_authorizer *a);
 extern int ceph_auth_update_authorizer(struct ceph_auth_client *ac,
                                        int peer_type,
                                        struct ceph_auth_handshake *a);
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 4343df806710..cbf460927c42 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -16,7 +16,6 @@ struct ceph_msg;
 struct ceph_snap_context;
 struct ceph_osd_request;
 struct ceph_osd_client;
-struct ceph_authorizer;
 
 /*
  * completion callback for async writepages
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 3e39ae5bc799..5b17de62c962 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -444,6 +444,7 @@ struct cgroup_subsys {
         int (*can_attach)(struct cgroup_taskset *tset);
         void (*cancel_attach)(struct cgroup_taskset *tset);
         void (*attach)(struct cgroup_taskset *tset);
+        void (*post_attach)(void);
         int (*can_fork)(struct task_struct *task);
         void (*cancel_fork)(struct task_struct *task);
         void (*fork)(struct task_struct *task);
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index fea160ee5803..85a868ccb493 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -137,8 +137,6 @@ static inline void set_mems_allowed(nodemask_t nodemask)
         task_unlock(current);
 }
 
-extern void cpuset_post_attach_flush(void);
-
 #else /* !CONFIG_CPUSETS */
 
 static inline bool cpusets_enabled(void) { return false; }
@@ -245,10 +243,6 @@ static inline bool read_mems_allowed_retry(unsigned int seq)
         return false;
 }
 
-static inline void cpuset_post_attach_flush(void)
-{
-}
-
 #endif /* !CONFIG_CPUSETS */
 
 #endif /* _LINUX_CPUSET_H */
diff --git a/include/linux/hash.h b/include/linux/hash.h
index 1afde47e1528..79c52fa81cac 100644
--- a/include/linux/hash.h
+++ b/include/linux/hash.h
@@ -32,12 +32,28 @@
 #error Wordsize not 32 or 64
 #endif
 
+/*
+ * The above primes are actively bad for hashing, since they are
+ * too sparse. The 32-bit one is mostly ok, the 64-bit one causes
+ * real problems. Besides, the "prime" part is pointless for the
+ * multiplicative hash.
+ *
+ * Although a random odd number will do, it turns out that the golden
+ * ratio phi = (sqrt(5)-1)/2, or its negative, has particularly nice
+ * properties.
+ *
+ * These are the negative, (1 - phi) = (phi^2) = (3 - sqrt(5))/2.
+ * (See Knuth vol 3, section 6.4, exercise 9.)
+ */
+#define GOLDEN_RATIO_32 0x61C88647
+#define GOLDEN_RATIO_64 0x61C8864680B583EBull
+
 static __always_inline u64 hash_64(u64 val, unsigned int bits)
 {
         u64 hash = val;
 
-#if defined(CONFIG_ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
-        hash = hash * GOLDEN_RATIO_PRIME_64;
+#if BITS_PER_LONG == 64
+        hash = hash * GOLDEN_RATIO_64;
 #else
         /*  Sigh, gcc can't optimise this alone like it does for 32 bits. */
         u64 n = hash;
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 7008623e24b1..d7b9e5346fba 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -152,6 +152,7 @@ static inline bool is_huge_zero_pmd(pmd_t pmd)
 }
 
 struct page *get_huge_zero_page(void);
+void put_huge_zero_page(void);
 
 #else /* CONFIG_TRANSPARENT_HUGEPAGE */
 #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
@@ -208,6 +209,10 @@ static inline bool is_huge_zero_page(struct page *page)
         return false;
 }
 
+static inline void put_huge_zero_page(void)
+{
+        BUILD_BUG();
+}
 
 static inline struct page *follow_devmap_pmd(struct vm_area_struct *vma,
                 unsigned long addr, pmd_t *pmd, int flags)
diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index d5569734f672..548fd535fd02 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -28,6 +28,11 @@ static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
         return (struct ethhdr *)skb_mac_header(skb);
 }
 
+static inline struct ethhdr *inner_eth_hdr(const struct sk_buff *skb)
+{
+        return (struct ethhdr *)skb_inner_mac_header(skb);
+}
+
 int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
 
 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index d026b190c530..d10ef06971b5 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -196,9 +196,11 @@ struct lock_list {
  * We record lock dependency chains, so that we can cache them:
  */
 struct lock_chain {
-        u8                              irq_context;
-        u8                              depth;
-        u16                             base;
+        /* see BUILD_BUG_ON()s in lookup_chain_cache() */
+        unsigned int                    irq_context :  2,
+                                        depth       :  6,
+                                        base        : 24;
+        /* 4 byte hole */
         struct hlist_node               entry;
         u64                             chain_key;
 };
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 6bd429b53b77..8fecd6d6f814 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -393,6 +393,17 @@ enum {
         MLX5_CAP_OFF_CMDIF_CSUM         = 46,
 };
 
+enum {
+        /*
+         * Max wqe size for rdma read is 512 bytes, so this
+         * limits our max_sge_rd as the wqe needs to fit:
+         * - ctrl segment (16 bytes)
+         * - rdma segment (16 bytes)
+         * - scatter elements (16 bytes each)
+         */
+        MLX5_MAX_SGE_RD = (512 - 16 - 16) / 16
+};
+
 struct mlx5_inbox_hdr {
         __be16          opcode;
         u8              rsvd[4];
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a55e5be0894f..864d7221de84 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1031,6 +1031,8 @@ static inline bool page_mapped(struct page *page)
         page = compound_head(page);
         if (atomic_read(compound_mapcount_ptr(page)) >= 0)
                 return true;
+        if (PageHuge(page))
+                return false;
         for (i = 0; i < hpage_nr_pages(page); i++) {
                 if (atomic_read(&page[i]._mapcount) >= 0)
                         return true;
@@ -1138,6 +1140,8 @@ struct zap_details {
 
 struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
                 pte_t pte);
+struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
+                                pmd_t pmd);
 
 int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
                 unsigned long size);
diff --git a/include/linux/net.h b/include/linux/net.h
index 72c1e0622ce2..9aa49a05fe38 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -245,7 +245,15 @@ do {								\
         net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
 #define net_info_ratelimited(fmt, ...)                          \
         net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
-#if defined(DEBUG)
+#if defined(CONFIG_DYNAMIC_DEBUG)
+#define net_dbg_ratelimited(fmt, ...)                                   \
+do {                                                                    \
+        DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);                 \
+        if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) &&        \
+            net_ratelimit())                                            \
+                __dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__);    \
+} while (0)
+#elif defined(DEBUG)
 #define net_dbg_ratelimited(fmt, ...)                           \
         net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__)
 #else
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f2182594160e..bcf012637d10 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3992,7 +3992,7 @@ netdev_features_t netif_skb_features(struct sk_buff *skb);
 
 static inline bool net_gso_ok(netdev_features_t features, int gso_type)
 {
-        netdev_features_t feature = gso_type << NETIF_F_GSO_SHIFT;
+        netdev_features_t feature = (netdev_features_t)gso_type << NETIF_F_GSO_SHIFT;
 
         /* check flags correspondence */
         BUILD_BUG_ON(SKB_GSO_TCPV4   != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT));