Merge remote-tracking branch 'korg/linux-3.0.y' into cm-13.0

Conflicts:
	crypto/algapi.c
	drivers/gpu/drm/i915/i915_debugfs.c
	drivers/gpu/drm/i915/intel_display.c
	drivers/video/fbmem.c
	include/linux/nls.h
	kernel/cgroup.c
	kernel/signal.c
	kernel/timeconst.pl
	net/ipv4/ping.c

Change-Id: I1f532925d1743df74d66bcdd6fc92f05c72ee0dd

12 files changed, 58 insertions, 17 deletions

diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index cbc6bb0..44b1110 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -81,6 +81,9 @@ extern int			ipv6_dev_get_saddr(struct net *net,
 					       const struct in6_addr *daddr,
 					       unsigned int srcprefs,
 					       struct in6_addr *saddr);
+extern int			__ipv6_get_lladdr(struct inet6_dev *idev,
+						  struct in6_addr *addr,
+						  unsigned char banned_flags);
 extern int			ipv6_get_lladdr(struct net_device *dev,
 						struct in6_addr *addr,
 						unsigned char banned_flags);
diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
index e46674d..f9ce2fa 100644
--- a/include/net/inet6_hashtables.h
+++ b/include/net/inet6_hashtables.h
@@ -28,16 +28,16 @@
 
 struct inet_hashinfo;
 
-/* I have no idea if this is a good hash for v6 or not. -DaveM */
 static inline unsigned int inet6_ehashfn(struct net *net,
 				const struct in6_addr *laddr, const u16 lport,
 				const struct in6_addr *faddr, const __be16 fport)
 {
-	u32 ports = (lport ^ (__force u16)fport);
+	u32 ports = (((u32)lport) << 16) | (__force u32)fport;
 
 	return jhash_3words((__force u32)laddr->s6_addr32[3],
-			    (__force u32)faddr->s6_addr32[3],
-			    ports, inet_ehash_secret + net_hash_mix(net));
+			    ipv6_addr_jhash(faddr),
+			    ports,
+			    inet_ehash_secret + net_hash_mix(net));
 }
 
 static inline int inet6_sk_ehashfn(const struct sock *sk)
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 16ff29a..b289bd2 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -33,6 +33,13 @@ struct inet_frag_queue {
 
 #define INETFRAGS_HASHSZ		64
 
+/* averaged:
+ * max_depth = default ipfrag_high_thresh / INETFRAGS_HASHSZ /
+ *	       rounded up (SKB_TRUELEN(0) + sizeof(struct ipq or
+ *	       struct frag_queue))
+ */
+#define INETFRAGS_MAXDEPTH		128
+
 struct inet_frags {
 	struct hlist_head	hash[INETFRAGS_HASHSZ];
 	rwlock_t		lock;
@@ -64,6 +71,8 @@ int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f);
 struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
 		struct inet_frags *f, void *key, unsigned int hash)
 	__releases(&f->lock);
+void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q,
+				   const char *prefix);
 
 static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
 {
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index f941964..ee4ee91 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -199,6 +199,7 @@ static inline void inet_sk_copy_descendant(struct sock *sk_to,
 extern int inet_sk_rebuild_header(struct sock *sk);
 
 extern u32 inet_ehash_secret;
+extern u32 ipv6_hash_secret;
 extern void build_ehash_secret(void);
 
 static inline unsigned int inet_ehashfn(struct net *net,
diff --git a/include/net/ip.h b/include/net/ip.h
index 24352d0..29e31ae 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -264,9 +264,11 @@ int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
 
 extern void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more);
 
-static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, struct sock *sk)
+static inline void ip_select_ident(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk)
 {
-	if (iph->frag_off & htons(IP_DF)) {
+	struct iphdr *iph = ip_hdr(skb);
+
+	if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
 		/* This is only to work around buggy Windows95/2000
 		 * VJ compression implementations.  If the ID field
 		 * does not change, they drop every other packet in
@@ -278,9 +280,11 @@ static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, str
 		__ip_select_ident(iph, dst, 0);
 }
 
-static inline void ip_select_ident_more(struct iphdr *iph, struct dst_entry *dst, struct sock *sk, int more)
+static inline void ip_select_ident_more(struct sk_buff *skb, struct dst_entry *dst, struct sock *sk, int more)
 {
-	if (iph->frag_off & htons(IP_DF)) {
+	struct iphdr *iph = ip_hdr(skb);
+
+	if ((iph->frag_off & htons(IP_DF)) && !skb->local_df) {
 		if (sk && inet_sk(sk)->inet_daddr) {
 			iph->id = htons(inet_sk(sk)->inet_id);
 			inet_sk(sk)->inet_id += 1 + more;
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 10422ef..2124004 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -129,18 +129,16 @@ struct fib_result_nl {
 };
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
-
 #define FIB_RES_NH(res)		((res).fi->fib_nh[(res).nh_sel])
-
-#define FIB_TABLE_HASHSZ 2
-
 #else /* CONFIG_IP_ROUTE_MULTIPATH */
-
 #define FIB_RES_NH(res)		((res).fi->fib_nh[0])
+#endif /* CONFIG_IP_ROUTE_MULTIPATH */
 
+#ifdef CONFIG_IP_MULTIPLE_TABLES
 #define FIB_TABLE_HASHSZ 256
-
-#endif /* CONFIG_IP_ROUTE_MULTIPATH */
+#else
+#define FIB_TABLE_HASHSZ 2
+#endif
 
 extern __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh);
 
diff --git a/include/net/ipip.h b/include/net/ipip.h
index a32654d..4dccfe3 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -50,7 +50,7 @@ struct ip_tunnel_prl_entry {
 	int pkt_len = skb->len - skb_transport_offset(skb);		\
 									\
 	skb->ip_summed = CHECKSUM_NONE;					\
-	ip_select_ident(iph, &rt->dst, NULL);				\
+	ip_select_ident(skb, &rt->dst, NULL);				\
 									\
 	err = ip_local_out(skb);					\
 	if (likely(net_xmit_eval(err) == 0)) {				\
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index eafd2f4..1ec9b1f 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -15,6 +15,7 @@
 
 #include <linux/ipv6.h>
 #include <linux/hardirq.h>
+#include <linux/jhash.h>
 #include <net/if_inet6.h>
 #include <net/ndisc.h>
 #include <net/flow.h>
@@ -406,6 +407,17 @@ struct ip6_create_arg {
 void ip6_frag_init(struct inet_frag_queue *q, void *a);
 int ip6_frag_match(struct inet_frag_queue *q, void *a);
 
+/* more secured version of ipv6_addr_hash() */
+static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
+{
+	u32 v = (__force u32)a->s6_addr32[0] ^ (__force u32)a->s6_addr32[1];
+
+	return jhash_3words(v,
+			    (__force u32)a->s6_addr32[2],
+			    (__force u32)a->s6_addr32[3],
+			    ipv6_hash_secret);
+}
+
 static inline int ipv6_addr_any(const struct in6_addr *a)
 {
 	return (a->s6_addr32[0] | a->s6_addr32[1] |
diff --git a/include/net/scm.h b/include/net/scm.h
index 745460f..820c1b3 100644
--- a/include/net/scm.h
+++ b/include/net/scm.h
@@ -50,7 +50,7 @@ static __inline__ void scm_set_cred(struct scm_cookie *scm,
 {
 	scm->pid  = get_pid(pid);
 	scm->cred = get_cred(cred);
-	cred_to_ucred(pid, cred, &scm->creds);
+	cred_to_ucred(pid, cred, &scm->creds, false);
 }
 
 static __inline__ void scm_destroy_cred(struct scm_cookie *scm)
diff --git a/include/net/sock.h b/include/net/sock.h
index b2deeab..b6abd4f 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -721,6 +721,18 @@ struct timewait_sock_ops;
 struct inet_hashinfo;
 struct raw_hashinfo;
 
+/*
+ * caches using SLAB_DESTROY_BY_RCU should let .next pointer from nulls nodes
+ * un-modified. Special care is taken when initializing object to zero.
+ */
+static inline void sk_prot_clear_nulls(struct sock *sk, int size)
+{
+	if (offsetof(struct sock, sk_node.next) != 0)
+		memset(sk, 0, offsetof(struct sock, sk_node.next));
+	memset(&sk->sk_node.pprev, 0,
+	       size - offsetof(struct sock, sk_node.pprev));
+}
+
 /* Networking protocol blocks we attach to sockets.
  * socket layer -> transport layer interface
  * transport -> network interface is defined by struct inet_proto
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 3180f6c..0f6a452 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -902,6 +902,7 @@ static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
 	if (sysctl_tcp_low_latency || !tp->ucopy.task)
 		return 0;
 
+	skb_dst_force(skb);
 	__skb_queue_tail(&tp->ucopy.prequeue, skb);
 	tp->ucopy.memory += skb->truesize;
 	if (tp->ucopy.memory > sk->sk_rcvbuf) {
diff --git a/include/net/udp.h b/include/net/udp.h
index 67ea6fc..e723c9d 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -180,6 +180,7 @@ extern int udp_get_port(struct sock *sk, unsigned short snum,
 extern void udp_err(struct sk_buff *, u32);
 extern int udp_sendmsg(struct kiocb *iocb, struct sock *sk,
 			    struct msghdr *msg, size_t len);
+extern int udp_push_pending_frames(struct sock *sk);
 extern void udp_flush_pending_frames(struct sock *sk);
 extern int udp_rcv(struct sk_buff *skb);
 extern int udp_ioctl(struct sock *sk, int cmd, unsigned long arg);