Merge commit 'v3.17' into next

5 files changed, 63 insertions, 44 deletions

diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h
index 4b7cd695e43..f22538e6824 100644
--- a/include/net/sctp/command.h
+++ b/include/net/sctp/command.h
@@ -118,6 +118,7 @@ typedef enum {
 #define SCTP_MAX_NUM_COMMANDS 14
 
 typedef union {
+	void *zero_all;	/* Set to NULL to clear the entire union */
 	__s32 i32;
 	__u32 u32;
 	__be32 be32;
@@ -154,7 +155,7 @@ typedef union {
 static inline sctp_arg_t	\
 SCTP_## name (type arg)		\
 { sctp_arg_t retval;\
-  memset(&retval, 0, sizeof(sctp_arg_t));\
+  retval.zero_all = NULL;\
   retval.elt = arg;\
   return retval;\
 }
@@ -191,7 +192,7 @@ static inline sctp_arg_t SCTP_NOFORCE(void)
 static inline sctp_arg_t SCTP_NULL(void)
 {
 	sctp_arg_t retval;
-	memset(&retval, 0, sizeof(sctp_arg_t));
+	retval.zero_all = NULL;
 	return retval;
 }
 
@@ -202,27 +203,49 @@ typedef struct {
 
 typedef struct {
 	sctp_cmd_t cmds[SCTP_MAX_NUM_COMMANDS];
-	__u8 next_free_slot;
-	__u8 next_cmd;
+	sctp_cmd_t *last_used_slot;
+	sctp_cmd_t *next_cmd;
 } sctp_cmd_seq_t;
 
 
 /* Initialize a block of memory as a command sequence.
  * Return 0 if the initialization fails.
  */
-int sctp_init_cmd_seq(sctp_cmd_seq_t *seq);
+static inline int sctp_init_cmd_seq(sctp_cmd_seq_t *seq)
+{
+	/* cmds[] is filled backwards to simplify the overflow BUG() check */
+	seq->last_used_slot = seq->cmds + SCTP_MAX_NUM_COMMANDS;
+	seq->next_cmd = seq->last_used_slot;
+	return 1;		/* We always succeed.  */
+}
+
 
 /* Add a command to an sctp_cmd_seq_t.
  *
  * Use the SCTP_* constructors defined by SCTP_ARG_CONSTRUCTOR() above
  * to wrap data which goes in the obj argument.
  */
-void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj);
+static inline void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb,
+				   sctp_arg_t obj)
+{
+	sctp_cmd_t *cmd = seq->last_used_slot - 1;
+
+	BUG_ON(cmd < seq->cmds);
+
+	cmd->verb = verb;
+	cmd->obj = obj;
+	seq->last_used_slot = cmd;
+}
 
 /* Return the next command structure in an sctp_cmd_seq.
  * Return NULL at the end of the sequence.
  */
-sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq);
+static inline sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq)
+{
+	if (seq->next_cmd <= seq->last_used_slot)
+		return NULL;
 
-#endif /* __net_sctp_command_h__ */
+	return --seq->next_cmd;
+}
 
+#endif /* __net_sctp_command_h__ */
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 307728f622e..8c337cd0e1e 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -311,7 +311,7 @@ typedef enum {
 	SCTP_XMIT_OK,
 	SCTP_XMIT_PMTU_FULL,
 	SCTP_XMIT_RWND_FULL,
-	SCTP_XMIT_NAGLE_DELAY,
+	SCTP_XMIT_DELAY,
 } sctp_xmit_t;
 
 /* These are the commands for manipulating transports.  */
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 8e4de46c052..9fbd856e671 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -109,6 +109,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
 		    struct sctp_association *asoc);
 extern struct percpu_counter sctp_sockets_allocated;
 int sctp_asconf_mgmt(struct sctp_sock *, struct sctp_sockaddr_entry *);
+struct sk_buff *sctp_skb_recv_datagram(struct sock *, int, int, int *);
 
 /*
  * sctp/primitive.c
@@ -319,6 +320,19 @@ static inline sctp_assoc_t sctp_assoc2id(const struct sctp_association *asoc)
 	return asoc ? asoc->assoc_id : 0;
 }
 
+static inline enum sctp_sstat_state
+sctp_assoc_to_state(const struct sctp_association *asoc)
+{
+	/* SCTP's uapi always had SCTP_EMPTY(=0) as a dummy state, but we
+	 * got rid of it in kernel space. Therefore SCTP_CLOSED et al
+	 * start at =1 in user space, but actually as =0 in kernel space.
+	 * Now that we can not break user space and SCTP_EMPTY is exposed
+	 * there, we need to fix it up with an ugly offset not to break
+	 * applications. :(
+	 */
+	return asoc->state + 1;
+}
+
 /* Look up the association by its id.  */
 struct sctp_association *sctp_id2assoc(struct sock *sk, sctp_assoc_t id);
 
@@ -388,27 +402,6 @@ static inline int sctp_list_single_entry(struct list_head *head)
 	return (head->next != head) && (head->next == head->prev);
 }
 
-/* Generate a random jitter in the range of -50% ~ +50% of input RTO. */
-static inline __s32 sctp_jitter(__u32 rto)
-{
-	static __u32 sctp_rand;
-	__s32 ret;
-
-	/* Avoid divide by zero. */
-	if (!rto)
-		rto = 1;
-
-	sctp_rand += jiffies;
-	sctp_rand ^= (sctp_rand << 12);
-	sctp_rand ^= (sctp_rand >> 20);
-
-	/* Choose random number from 0 to rto, then move to -50% ~ +50%
-	 * of rto.
-	 */
-	ret = sctp_rand % rto - (rto >> 1);
-	return ret;
-}
-
 /* Break down data chunks at this point.  */
 static inline int sctp_frag_point(const struct sctp_association *asoc, int pmtu)
 {
@@ -574,6 +567,8 @@ static inline void sctp_v6_map_v4(union sctp_addr *addr)
 static inline void sctp_v4_map_v6(union sctp_addr *addr)
 {
 	addr->v6.sin6_family = AF_INET6;
+	addr->v6.sin6_flowinfo = 0;
+	addr->v6.sin6_scope_id = 0;
 	addr->v6.sin6_port = addr->v4.sin_port;
 	addr->v6.sin6_addr.s6_addr32[3] = addr->v4.sin_addr.s_addr;
 	addr->v6.sin6_addr.s6_addr32[0] = 0;
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index f38588bf346..4ff3f67be62 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -207,7 +207,9 @@ struct sctp_sock {
 	struct sctp_paddrparams paddrparam;
 	struct sctp_event_subscribe subscribe;
 	struct sctp_assocparams assocparams;
+
 	int user_frag;
+
 	__u32 autoclose;
 	__u8 nodelay;
 	__u8 disable_fragments;
@@ -215,6 +217,8 @@ struct sctp_sock {
 	__u8 frag_interleave;
 	__u32 adaptation_ind;
 	__u32 pd_point;
+	__u8 recvrcvinfo;
+	__u8 recvnxtinfo;
 
 	atomic_t pd_mode;
 	/* Receive to here while partial delivery is in effect. */
@@ -461,10 +465,6 @@ struct sctp_af {
 					 int saddr);
 	void		(*from_sk)	(union sctp_addr *,
 					 struct sock *sk);
-	void		(*to_sk_saddr)	(union sctp_addr *,
-					 struct sock *sk);
-	void		(*to_sk_daddr)	(union sctp_addr *,
-					 struct sock *sk);
 	void		(*from_addr_param) (union sctp_addr *,
 					    union sctp_addr_param *,
 					    __be16 port, int iif);
@@ -505,7 +505,9 @@ struct sctp_pf {
 	int  (*supported_addrs)(const struct sctp_sock *, __be16 *);
 	struct sock *(*create_accept_sk) (struct sock *sk,
 					  struct sctp_association *asoc);
-	void (*addr_v4map) (struct sctp_sock *, union sctp_addr *);
+	int (*addr_to_user)(struct sctp_sock *sk, union sctp_addr *addr);
+	void (*to_sk_saddr)(union sctp_addr *, struct sock *sk);
+	void (*to_sk_daddr)(union sctp_addr *, struct sock *sk);
 	struct sctp_af *af;
 };
 
@@ -1919,7 +1921,8 @@ struct sctp_chunk *sctp_get_ecne_prepend(struct sctp_association *asoc);
 /* A convenience structure to parse out SCTP specific CMSGs. */
 typedef struct sctp_cmsgs {
 	struct sctp_initmsg *init;
-	struct sctp_sndrcvinfo *info;
+	struct sctp_sndrcvinfo *srinfo;
+	struct sctp_sndinfo *sinfo;
 } sctp_cmsgs_t;
 
 /* Structure for tracking memory objects */
diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h
index daacb32b55b..cccdcfd1497 100644
--- a/include/net/sctp/ulpevent.h
+++ b/include/net/sctp/ulpevent.h
@@ -129,7 +129,12 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
 	const struct sctp_association *asoc, gfp_t gfp);
 
 void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
-	struct msghdr *);
+				   struct msghdr *);
+void sctp_ulpevent_read_rcvinfo(const struct sctp_ulpevent *event,
+				struct msghdr *);
+void sctp_ulpevent_read_nxtinfo(const struct sctp_ulpevent *event,
+				struct msghdr *, struct sock *sk);
+
 __u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event);
 
 /* Is this event type enabled? */
@@ -155,10 +160,3 @@ static inline int sctp_ulpevent_is_enabled(const struct sctp_ulpevent *event,
 }
 
 #endif /* __sctp_ulpevent_h__ */
-
-
-
-
-
-
-