Merge http://linux-lksctp.bkbits.net/lksctp-2.5

into nuts.ninka.net:/home/davem/src/BK/sctp-2.5

include/net/sctp/sctp.h

@@ -588,6 +588,7 @@ struct sctp6_sock {
 #endif /* CONFIG_IPV6 */
 
 #define sctp_sk(__sk) (&((struct sctp_sock *)__sk)->sctp)
+#define sctp_opt2sk(__sp) &container_of(__sp, struct sctp_sock, sctp)->sk
 
 /* Is a socket of this style? */
 #define sctp_style(sk, style) __sctp_style((sk), (SCTP_SOCKET_##style))
@@ -611,4 +612,23 @@ int static inline __sctp_sstate(const struct sock *sk, sctp_sock_state_t state)
 	return sk->sk_state == state;
 }
 
+/* Map v4-mapped v6 address back to v4 address */
+static inline void sctp_v6_map_v4(union sctp_addr *addr)
+{
+	addr->v4.sin_family = AF_INET;
+	addr->v4.sin_port = addr->v6.sin6_port;
+	addr->v4.sin_addr.s_addr = addr->v6.sin6_addr.s6_addr32[3];
+}
+
+/* Map v4 address to v4-mapped v6 address */
+static inline void sctp_v4_map_v6(union sctp_addr *addr)
+{
+	addr->v6.sin6_family = AF_INET6;
+	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;
+	addr->v6.sin6_addr.s6_addr32[1] = 0;
+	addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff);
+}
+
 #endif /* __net_sctp_h__ */

include/net/sctp/sm.h

@@ -231,7 +231,8 @@ struct sctp_chunk *sctp_make_data_empty(struct sctp_association *,
 struct sctp_chunk *sctp_make_ecne(const struct sctp_association *,
 				  const __u32);
 struct sctp_chunk *sctp_make_sack(const struct sctp_association *);
-struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc);
+struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc,
+				      const struct sctp_chunk *chunk);
 struct sctp_chunk *sctp_make_shutdown_ack(const struct sctp_association *asoc,
 					  const struct sctp_chunk *);
 struct sctp_chunk *sctp_make_shutdown_complete(const struct sctp_association *,

include/net/sctp/structs.h

@@ -260,11 +260,13 @@ struct sctp_af {
 					 struct sock *sk);
 	void		(*to_sk_daddr)	(union sctp_addr *,
 					 struct sock *sk);
-	int		(*addr_valid)	(union sctp_addr *);
+	int		(*addr_valid)	(union sctp_addr *,
+					 struct sctp_opt *);
 	sctp_scope_t	(*scope) (union sctp_addr *);
 	void		(*inaddr_any)	(union sctp_addr *, unsigned short);
 	int		(*is_any)	(const union sctp_addr *);
-	int		(*available)	(const union sctp_addr *);
+	int		(*available)	(union sctp_addr *,
+					 struct sctp_opt *);
 	int		(*skb_iif)	(const struct sk_buff *sk);
 	int		(*is_ce)	(const struct sk_buff *sk);
 	void		(*seq_dump_addr)(struct seq_file *seq,
@@ -282,7 +284,7 @@ int sctp_register_af(struct sctp_af *);
 struct sctp_pf {
 	void (*event_msgname)(struct sctp_ulpevent *, char *, int *);
 	void (*skb_msgname)  (struct sk_buff *, char *, int *);
-	int  (*af_supported) (sa_family_t);
+	int  (*af_supported) (sa_family_t, struct sctp_opt *);
 	int  (*cmp_addr) (const union sctp_addr *,
 			  const union sctp_addr *,
 			  struct sctp_opt *);
@@ -291,6 +293,7 @@ struct sctp_pf {
 	int  (*supported_addrs)(const struct sctp_opt *, __u16 *);
 	struct sock *(*create_accept_sk) (struct sock *sk,
 					  struct sctp_association *asoc);
+	void (*addr_v4map) (struct sctp_opt *, union sctp_addr *);
 	struct sctp_af *af;
 };
 

include/net/sctp/ulpevent.h

@@ -40,6 +40,7 @@
  *   Jon Grimm             <jgrimm@us.ibm.com>
  *   La Monte H.P. Yarroll <piggy@acm.org>
  *   Karl Knutson          <karl@athena.chicago.il.us>
+ *   Sridhar Samudrala     <sri@us.ibm.com>
  *
  * Any bugs reported given to us we will try to fix... any fixes shared will
  * be incorporated into the next SCTP release.
@@ -53,7 +54,6 @@
  * growing this structure as it is at the maximum limit now.
  */
 struct sctp_ulpevent {
-	struct sctp_association *asoc;
 	struct sctp_sndrcvinfo sndrcvinfo;
 	int msg_flags;
 	int iif;
@@ -72,9 +72,10 @@ static inline struct sctp_ulpevent *sctp_skb2event(struct sk_buff *skb)
 }
 
 struct sctp_ulpevent *sctp_ulpevent_new(int size, int flags, int gfp);
-struct sctp_ulpevent *sctp_ulpevent_init(struct sctp_ulpevent *, int flags);
+void sctp_ulpevent_init(struct sctp_ulpevent *, int flags);
 void sctp_ulpevent_free(struct sctp_ulpevent *);
 int sctp_ulpevent_is_notification(const struct sctp_ulpevent *);
+void sctp_queue_purge_ulpevents(struct sk_buff_head *list);
 
 struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
 	const struct sctp_association *asoc,

include/net/sctp/user.h

 /* SCTP kernel reference Implementation
  * Copyright (c) 1999-2000 Cisco, Inc.
  * Copyright (c) 1999-2001 Motorola, Inc.
- * Copyright (c) 2001 International Business Machines, Corp.
+ * Copyright (c) 2001-2003 International Business Machines, Corp.
+ * Copyright (c) 2002 Intel Corp.
  *
  * This file is part of the SCTP kernel reference Implementation
  *
@@ -41,61 +42,62 @@
  *    Jon Grimm                <jgrimm@us.ibm.com>
  *    Daisy Chang              <daisyc@us.ibm.com>
  *    Ryan Layer               <rmlayer@us.ibm.com>
- * 
+ *    Ardelle Fan	       <ardelle.fan@intel.com>
+ *    Sridhar Samudrala        <sri@us.ibm.com>
  *
  * Any bugs reported given to us we will try to fix... any fixes shared will
  * be incorporated into the next SCTP release.
  */
-#include <linux/types.h>
-#include <linux/socket.h>
 
 #ifndef __net_sctp_user_h__
 #define __net_sctp_user_h__
 
+#include <linux/types.h>
+#include <linux/socket.h>
 
 typedef void * sctp_assoc_t;
 
 /* The following symbols come from the Sockets API Extensions for
- * SCTP <draft-ietf-tsvwg-sctpsocket-04.txt>.
+ * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>.
  */
 enum sctp_optname {
 	SCTP_RTOINFO,
 #define SCTP_RTOINFO SCTP_RTOINFO
-	SCTP_ASSOCRTXINFO,
-#define SCTP_ASSOCRTXINFO SCTP_ASSOCRTXINFO
+	SCTP_ASSOCINFO,
+#define SCTP_ASSOCINFO SCTP_ASSOCINFO
 	SCTP_INITMSG,
 #define SCTP_INITMSG SCTP_INITMSG
-	SCTP_AUTO_CLOSE,
-#define SCTP_AUTO_CLOSE SCTP_AUTO_CLOSE
-	SCTP_SET_PRIMARY_ADDR,
-#define SCTP_SET_PRIMARY_ADDR SCTP_SET_PRIMARY_ADDR
+	SCTP_NODELAY, 	/* Get/set nodelay option. */
+#define SCTP_NODELAY	SCTP_NODELAY
+	SCTP_AUTOCLOSE,
+#define SCTP_AUTOCLOSE SCTP_AUTOCLOSE
 	SCTP_SET_PEER_PRIMARY_ADDR, 
 #define SCTP_SET_PEER_PRIMARY_ADDR SCTP_SET_PEER_PRIMARY_ADDR
-	SCTP_SET_ADAPTATION_LAYER,      
-#define SCTP_SET_ADAPTATION_LAYER SCTP_SET_ADAPTATION_LAYER
-	SCTP_SET_STREAM_TIMEOUTS,
-#define SCTP_SET_STREAM_TIMEOUTS SCTP_SET_STREAM_TIMEOUTS
+	SCTP_PRIMARY_ADDR,
+#define SCTP_PRIMARY_ADDR SCTP_PRIMARY_ADDR
+	SCTP_ADAPTION_LAYER,      
+#define SCTP_ADAPTION_LAYER SCTP_ADAPTION_LAYER
 	SCTP_DISABLE_FRAGMENTS,
 #define SCTP_DISABLE_FRAGMENTS SCTP_DISABLE_FRAGMENTS
-	SCTP_SET_PEER_ADDR_PARAMS,
-#define SCTP_SET_PEER_ADDR_PARAMS SCTP_SET_PEER_ADDR_PARAMS
-	SCTP_GET_PEER_ADDR_PARAMS,
-#define SCTP_GET_PEER_ADDR_PARAMS SCTP_GET_PEER_ADDR_PARAMS
+	SCTP_PEER_ADDR_PARAMS,
+#define SCTP_PEER_ADDR_PARAMS SCTP_PEER_ADDR_PARAMS
+	SCTP_DEFAULT_SEND_PARAM,
+#define SCTP_DEFAULT_SEND_PARAM SCTP_DEFAULT_SEND_PARAM
+	SCTP_EVENTS,
+#define SCTP_EVENTS SCTP_EVENTS
+	SCTP_I_WANT_MAPPED_V4_ADDR,  /* Turn on/off mapped v4 addresses  */
+#define SCTP_I_WANT_MAPPED_V4_ADDR SCTP_I_WANT_MAPPED_V4_ADDR
+	SCTP_MAXSEG, 	/* Get/set maximum fragment. */
+#define SCTP_MAXSEG 	SCTP_MAXSEG
 	SCTP_STATUS,
 #define SCTP_STATUS SCTP_STATUS
 	SCTP_GET_PEER_ADDR_INFO,
 #define SCTP_GET_PEER_ADDR_INFO SCTP_GET_PEER_ADDR_INFO
-	SCTP_SET_EVENTS,
-#define SCTP_SET_EVENTS SCTP_SET_EVENTS
-	SCTP_AUTOCLOSE,
-#define SCTP_AUTOCLOSE SCTP_AUTOCLOSE
-	SCTP_SET_DEFAULT_SEND_PARAM,
-#define SCTP_SET_DEFAULT_SEND_PARAM SCTP_SET_DEFAULT_SEND_PARAM
 
-	SCTP_SOCKOPT_DEBUG_NAME = 42, /* FIXME */
-#define SCTP_SOCKOPT_DEBUG_NAME	SCTP_SOCKOPT_DEBUG_NAME
-
-	SCTP_SOCKOPT_BINDX_ADD, /* BINDX requests for adding addresses. */
+	/* Internal Socket Options. Some of the sctp library functions are 
+	 * implemented using these socket options.
+	 */
+	SCTP_SOCKOPT_BINDX_ADD = 100,/* BINDX requests for adding addresses. */
 #define SCTP_SOCKOPT_BINDX_ADD	SCTP_SOCKOPT_BINDX_ADD
 	SCTP_SOCKOPT_BINDX_REM, /* BINDX requests for removing addresses. */
 #define SCTP_SOCKOPT_BINDX_REM	SCTP_SOCKOPT_BINDX_REM
@@ -109,29 +111,8 @@ enum sctp_optname {
 #define SCTP_GET_LOCAL_ADDRS_NUM	SCTP_GET_LOCAL_ADDRS_NUM
 	SCTP_GET_LOCAL_ADDRS, 	/* Get all local addresss. */
 #define SCTP_GET_LOCAL_ADDRS	SCTP_GET_LOCAL_ADDRS
-	SCTP_NODELAY, 	/* Get/set nodelay option. */
-#define SCTP_NODELAY	SCTP_NODELAY
-	SCTP_I_WANT_MAPPED_V4_ADDR,  /* Turn on/off mapped v4 addresses  */
-#define SCTP_I_WANT_MAPPED_V4_ADDR SCTP_I_WANT_MAPPED_V4_ADDR
-	SCTP_MAXSEG, 	/* Get/set maximum fragment. */
-#define SCTP_MAXSEG 	SCTP_MAXSEG
 };
 
-
-/*
- * 5.2 SCTP msg_control Structures
- *
- * A key element of all SCTP-specific socket extensions is the use of
- * ancillary data to specify and access SCTP-specific data via the
- * struct msghdr's msg_control member used in sendmsg() and recvmsg().
- * Fine-grained control over initialization and sending parameters are
- * handled with ancillary data.
- *
- * Each ancillary data item is preceeded by a struct cmsghdr (see
- * Section 5.1), which defines the function and purpose of the data
- * contained in in the cmsg_data[] member.
- */
-
 /*
  * 5.2.1 SCTP Initiation Structure (SCTP_INIT)
  *
@@ -152,7 +133,6 @@ struct sctp_initmsg {
 	__u16 sinit_max_init_timeo;
 };
 
-
 /*
  * 5.2.2 SCTP Header Information Structure (SCTP_SNDRCV)
  *
@@ -214,7 +194,6 @@ typedef enum sctp_cmsg_type {
  *   following format:
  *
  */
-
 struct sctp_assoc_change {
 	__u16 sac_type;
 	__u16 sac_flags;
@@ -267,11 +246,11 @@ struct sctp_paddr_change {
  *   event that happened to the address.  They include:
  */
 enum sctp_spc_state {
-	ADDRESS_AVAILABLE,
-	ADDRESS_UNREACHABLE,
-	ADDRESS_REMOVED,
-	ADDRESS_ADDED,
-	ADDRESS_MADE_PRIM,
+	SCTP_ADDR_REACHABLE,
+	SCTP_ADDR_UNREACHABLE,
+	SCTP_ADDR_REMOVED,
+	SCTP_ADDR_ADDED,
+	SCTP_ADDR_MADE_PRIM,
 };
 
 
@@ -290,7 +269,6 @@ struct sctp_remote_error {
 	__u16 sre_flags;
 	__u32 sre_length;
 	__u16 sre_error;
-	__u16 sre_len;
 	sctp_assoc_t sre_assoc_id;
 	__u8 sre_data[0];
 };
@@ -324,7 +302,6 @@ struct sctp_send_failed {
  *                       Note that this does not necessarily mean that the
  *                       data was (or was not) successfully delivered.
  */
-
 enum sctp_ssf_flags {
 	SCTP_DATA_UNSENT,
 	SCTP_DATA_SENT,
@@ -336,7 +313,6 @@ enum sctp_ssf_flags {
  *   When a peer sends a SHUTDOWN, SCTP delivers this notification to
  *   inform the application that it should cease sending data.
  */
-
 struct sctp_shutdown_event {
 	__u16 sse_type;
 	__u16 sse_flags;
@@ -355,8 +331,8 @@ struct sctp_adaption_event {
 	__u16 sai_type;
 	__u16 sai_flags;
 	__u32 sai_length;
-	__u32 sai_adaptation_bits;
-	sctp_assoc_t sse_assoc_id;
+	__u32 sai_adaption_ind;
+	sctp_assoc_t sai_assoc_id;
 };
 
 /*
@@ -366,8 +342,7 @@ struct sctp_adaption_event {
  *   message this notification will be used to inidicate
  *   various events.
  */
-
-struct sctp_rcv_pdapi_event {
+struct sctp_pdapi_event {
 	__u16 pdapi_type;
 	__u16 pdapi_flags;
 	__u32 pdapi_length;
@@ -404,14 +379,14 @@ union sctp_notification {
 		__u16 sn_type;             /* Notification type. */
 		__u16 sn_flags;
 		__u32 sn_length;
-	} h;
+	} sn_header;
 	struct sctp_assoc_change sn_assoc_change;
-	struct sctp_paddr_change sn_padr_change;
+	struct sctp_paddr_change sn_paddr_change;
 	struct sctp_remote_error sn_remote_error;
 	struct sctp_send_failed sn_send_failed;
 	struct sctp_shutdown_event sn_shutdown_event;
 	struct sctp_adaption_event sn_adaption_event;
-	struct sctp_rcv_pdapi_event sn_rcv_pdapi_event;
+	struct sctp_pdapi_event sn_pdapi_event;
 };
 
 /* Section 5.3.1
@@ -447,76 +422,26 @@ typedef enum sctp_sn_error {
 	SCTP_PEER_FAULTY,
 } sctp_sn_error_t;
 
-/*
- *
- * 7.1.14 Peer Address Parameters
- *
- *   Applications can enable or disable heartbeats for any peer address
- *   of an association, modify an address's heartbeat interval, force a
- *   heartbeat to be sent immediately, and adjust the address's maximum
- *   number of retransmissions sent before an address is considered
- *   unreachable. The following structure is used to access and modify an
- *   address's parameters:
- */
-
-struct sctp_paddrparams {
-	struct sockaddr_storage	spp_address;
-	__u32			spp_hbinterval;
-	__u16			spp_pathmaxrxt;
-	sctp_assoc_t		spp_assoc_id;
-};
-
-/*
- * 7.2.2 Peer Address Information
- *
- *   Applications can retrieve information about a specific peer address
- *   of an association, including its reachability state, congestion
- *   window, and retransmission timer values.  This information is
- *   read-only. The following structure is used to access this
- *   information:
- */
-
-struct sctp_paddrinfo {
-	sctp_assoc_t		spinfo_assoc_id;
-	struct sockaddr_storage	spinfo_address;
-	__s32			spinfo_state;
-	__u32			spinfo_cwnd;
-	__u32			spinfo_srtt;
-	__u32			spinfo_rto;
-	__u32			spinfo_mtu;
-};
-
-/* Peer addresses's state. */
-enum sctp_spinfo_state {
-	SCTP_INACTIVE,
-	SCTP_ACTIVE,
-};
-
 /*
  * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO)
  *
  *   The protocol parameters used to initialize and bound retransmission
  *   timeout (RTO) are tunable.  See [SCTP] for more information on how
- *   these parameters are used in RTO calculation.  The peer address
- *   parameter is ignored for TCP style socket.
+ *   these parameters are used in RTO calculation. 
  */
-
 struct sctp_rtoinfo {
+	sctp_assoc_t	srto_assoc_id;
 	__u32		srto_initial;
 	__u32		srto_max;
 	__u32		srto_min;
-	sctp_assoc_t	srto_assoc_id;
 };
 
 /*
- * 7.1.2 Association Retransmission Parameter (SCTP_ASSOCRTXINFO)
+ * 7.1.2 Association Parameters (SCTP_ASSOCINFO)
  *
- *   The protocol parameter used to set the number of retransmissions
- *   sent before an association is considered unreachable.
- *   See [SCTP] for more information on how this parameter is used.  The
- *   peer address parameter is ignored for TCP style socket.
+ *   This option is used to both examine and set various association and
+ *   endpoint parameters.
  */
-
 struct sctp_assocparams {
 	sctp_assoc_t	sasoc_assoc_id;
 	__u16		sasoc_asocmaxrxt;
@@ -527,31 +452,81 @@ struct sctp_assocparams {
 };
 
 /*
- * 7.1.9 Set Primary Address (SCTP_SET_PRIMARY_ADDR)
+ * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
  *
  *  Requests that the peer mark the enclosed address as the association
  *  primary. The enclosed address must be one of the association's
  *  locally bound addresses. The following structure is used to make a
  *   set primary request:
  */
-
-struct sctp_setprim {
-	struct sockaddr_storage ssp_addr;
-	sctp_assoc_t            ssp_assoc_id;
+struct sctp_setpeerprim {
+	sctp_assoc_t            sspp_assoc_id;
+	struct sockaddr_storage sspp_addr;
 };
 
 /*
- * 7.1.10 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
+ * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR)
  *
  *  Requests that the local SCTP stack use the enclosed peer address as
  *  the association primary. The enclosed address must be one of the
  *  association peer's addresses. The following structure is used to
  *  make a set peer primary request:
  */
+struct sctp_prim {
+	sctp_assoc_t            ssp_assoc_id;
+	struct sockaddr_storage ssp_addr;
+};
 
-struct sctp_setpeerprim {
-	struct sockaddr_storage sspp_addr;
-	sctp_assoc_t            sspp_assoc_id;
+/*
+ * 7.1.11 Set Adaption Layer Indicator (SCTP_ADAPTION_LAYER)
+ *
+ * Requests that the local endpoint set the specified Adaption Layer
+ * Indication parameter for all future INIT and INIT-ACK exchanges.
+ */
+struct sctp_setadaption {
+	__u32	ssb_adaption_ind;
+};
+
+/*
+ * 7.1.13 Peer Address Parameters  (SCTP_PEER_ADDR_PARAMS)
+ *
+ *   Applications can enable or disable heartbeats for any peer address
+ *   of an association, modify an address's heartbeat interval, force a
+ *   heartbeat to be sent immediately, and adjust the address's maximum
+ *   number of retransmissions sent before an address is considered
+ *   unreachable. The following structure is used to access and modify an
+ *   address's parameters:
+ */
+struct sctp_paddrparams {
+	sctp_assoc_t		spp_assoc_id;
+	struct sockaddr_storage	spp_address;
+	__u32			spp_hbinterval;
+	__u16			spp_pathmaxrxt;
+};
+
+/*
+ * 7.2.2 Peer Address Information
+ *
+ *   Applications can retrieve information about a specific peer address
+ *   of an association, including its reachability state, congestion
+ *   window, and retransmission timer values.  This information is
+ *   read-only. The following structure is used to access this
+ *   information:
+ */
+struct sctp_paddrinfo {
+	sctp_assoc_t		spinfo_assoc_id;
+	struct sockaddr_storage	spinfo_address;
+	__s32			spinfo_state;
+	__u32			spinfo_cwnd;
+	__u32			spinfo_srtt;
+	__u32			spinfo_rto;
+	__u32			spinfo_mtu;
+};
+
+/* Peer addresses's state. */
+enum sctp_spinfo_state {
+	SCTP_INACTIVE,
+	SCTP_ACTIVE,
 };
 
 /*
@@ -575,34 +550,8 @@ struct sctp_status {
 	struct sctp_paddrinfo	sstat_primary;
 };
 
-
-/*
- * 7.1.12 Set Adaption Layer Indicator
- *
- * Requests that the local endpoint set the specified Adaption Layer
- * Indication parameter for all future
- *  INIT and INIT-ACK exchanges.
- */
-
-struct sctp_setadaption {
-	__u32	ssb_adaption_ind;
-};
-
-/*
- * 7.1.12 Set default message time outs (SCTP_SET_STREAM_TIMEOUTS)
- *
- * This option requests that the requested stream apply a
- *  default time-out for messages in queue.
- */
-struct sctp_setstrm_timeout   {
-	sctp_assoc_t	ssto_assoc_id;
-	__u32		ssto_timeout;
-	__u16		ssto_streamid_start;
-	__u16		ssto_streamid_end;
-};
-
 /*
- * 8.3 8.5 get all peer/local addresses on a socket
+ * 8.3, 8.5 get all peer/local addresses on a socket
  * This parameter struct is for getsockopt
  */
 struct sctp_getaddrs {
@@ -624,8 +573,8 @@ enum sctp_msg_flags {
  * The flags parameter is formed from the bitwise OR of zero or more of the
  * following currently defined flags:
  */
-#define BINDX_ADD_ADDR 0x01
-#define BINDX_REM_ADDR 0x02
+#define SCTP_BINDX_ADD_ADDR 0x01
+#define SCTP_BINDX_REM_ADDR 0x02
 
 /* This is the structure that is passed as an argument(optval) to
  * getsockopt(SCTP_SOCKOPT_PEELOFF).
@@ -636,6 +585,3 @@ typedef struct {
 } sctp_peeloff_arg_t;
 
 #endif /* __net_sctp_user_h__ */
-
-
-

net/sctp/associola.c

@@ -556,12 +556,12 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
 	switch (command) {
 	case SCTP_TRANSPORT_UP:
 		transport->active = SCTP_ACTIVE;
-		spc_state = ADDRESS_AVAILABLE;
+		spc_state = SCTP_ADDR_REACHABLE;
 		break;
 
 	case SCTP_TRANSPORT_DOWN:
 		transport->active = SCTP_INACTIVE;
-		spc_state = ADDRESS_UNREACHABLE;
+		spc_state = SCTP_ADDR_UNREACHABLE;
 		break;
 
 	default:
@@ -877,7 +877,7 @@ void sctp_assoc_migrate(struct sctp_association *assoc, struct sock *newsk)
 	/* Delete the association from the old endpoint's list of
 	 * associations.
 	 */
-	list_del(&assoc->asocs);
+	list_del_init(&assoc->asocs);
 
 	/* Decrement the backlog value for a TCP-style socket. */
 	if (sctp_style(oldsk, TCP))

net/sctp/chunk.c

@@ -85,7 +85,7 @@ static void sctp_datamsg_destroy(struct sctp_datamsg *msg)
 
 	/* Release all references. */
 	list_for_each_safe(pos, temp, &msg->chunks) {
-		list_del(pos);
+		list_del_init(pos);
 		chunk = list_entry(pos, struct sctp_chunk, frag_list);
 		/* Check whether we _really_ need to notify. */
 		if (notify < 0) {
@@ -294,7 +294,7 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
 
 errout:
 	list_for_each_safe(pos, temp, &msg->chunks) {
-		list_del(pos);
+		list_del_init(pos);
 		chunk = list_entry(pos, struct sctp_chunk, frag_list);
 		sctp_chunk_free(chunk);
 	}

net/sctp/input.c

@@ -150,7 +150,7 @@ int sctp_rcv(struct sk_buff *skb)
 	 * IP broadcast addresses cannot be used in an SCTP transport
 	 * address."
 	 */
-	if (!af->addr_valid(&src) || !af->addr_valid(&dest))
+	if (!af->addr_valid(&src, NULL) || !af->addr_valid(&dest, NULL))
 		goto discard_it;
 
 	asoc = __sctp_rcv_lookup(skb, &src, &dest, &transport);

net/sctp/ipv6.c

@@ -2,6 +2,7 @@
  * Copyright (c) 2001 Nokia, Inc.
  * Copyright (c) 2001 La Monte H.P. Yarroll
  * Copyright (c) 2002-2003 International Business Machines, Corp.
+ * Copyright (c) 2002-2003 Intel Corp.
  *
  * This file is part of the SCTP kernel reference Implementation
  *
@@ -37,6 +38,7 @@
  *    La Monte H.P. Yarroll <piggy@acm.org>
  *    Sridhar Samudrala	    <sri@us.ibm.com>
  *    Jon Grimm		    <jgrimm@us.ibm.com>
+ *    Ardelle Fan	    <ardelle.fan@intel.com>
  *
  * Based on:
  *	linux/net/ipv6/tcp_ipv6.c
@@ -192,6 +194,9 @@ struct dst_entry *sctp_v6_get_dst(struct sctp_association *asoc,
 
 	memset(&fl, 0, sizeof(fl));
 	ipv6_addr_copy(&fl.fl6_dst, &daddr->v6.sin6_addr);
+	if (ipv6_addr_type(&daddr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
+		fl.oif = daddr->v6.sin6_scope_id;
+	
 
 	SCTP_DEBUG_PRINTK("%s: DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
 			  __FUNCTION__, NIP6(fl.fl6_dst));
@@ -370,13 +375,28 @@ static void sctp_v6_from_sk(union sctp_addr *addr, struct sock *sk)
 /* Initialize sk->sk_rcv_saddr from sctp_addr. */
 static void sctp_v6_to_sk_saddr(union sctp_addr *addr, struct sock *sk)
 {
+	if (addr->sa.sa_family == AF_INET && sctp_sk(sk)->v4mapped) {
+		inet6_sk(sk)->rcv_saddr.s6_addr32[0] = 0;
+		inet6_sk(sk)->rcv_saddr.s6_addr32[1] = 0;
+		inet6_sk(sk)->rcv_saddr.s6_addr32[2] = htonl(0x0000ffff);
+		inet6_sk(sk)->rcv_saddr.s6_addr32[3] =
+			addr->v4.sin_addr.s_addr;
+	} else {
 		inet6_sk(sk)->rcv_saddr = addr->v6.sin6_addr;
+	}
 }
 
 /* Initialize sk->sk_daddr from sctp_addr. */
 static void sctp_v6_to_sk_daddr(union sctp_addr *addr, struct sock *sk)
 {
+	if (addr->sa.sa_family == AF_INET && sctp_sk(sk)->v4mapped) {
+		inet6_sk(sk)->daddr.s6_addr32[0] = 0;
+		inet6_sk(sk)->daddr.s6_addr32[1] = 0;
+		inet6_sk(sk)->daddr.s6_addr32[2] = htonl(0x0000ffff);
+		inet6_sk(sk)->daddr.s6_addr32[3] = addr->v4.sin_addr.s_addr;
+	} else {
 		inet6_sk(sk)->daddr = addr->v6.sin6_addr;
+	}
 }
 
 /* Initialize a sctp_addr from a dst_entry. */
@@ -390,13 +410,30 @@ static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst,
 }
 
 /* Compare addresses exactly.
- * FIXME: v4-mapped-v6.
+ * v4-mapped-v6 is also in consideration.
  */
 static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
 			    const union sctp_addr *addr2)
 {
-	if (addr1->sa.sa_family != addr2->sa.sa_family)
+	if (addr1->sa.sa_family != addr2->sa.sa_family) {
+		if (addr1->sa.sa_family == AF_INET &&
+		    addr2->sa.sa_family == AF_INET6 &&
+		    IPV6_ADDR_MAPPED == ipv6_addr_type(&addr2->v6.sin6_addr)) {
+			if (addr2->v6.sin6_port == addr1->v4.sin_port &&
+			    addr2->v6.sin6_addr.s6_addr32[3] ==
+			    addr1->v4.sin_addr.s_addr)
+				return 1;
+		}
+		if (addr2->sa.sa_family == AF_INET &&
+		    addr1->sa.sa_family == AF_INET6 &&
+		    IPV6_ADDR_MAPPED == ipv6_addr_type(&addr1->v6.sin6_addr)) {
+			if (addr1->v6.sin6_port == addr2->v4.sin_port &&
+			    addr1->v6.sin6_addr.s6_addr32[3] ==
+			    addr2->v4.sin_addr.s_addr)
+				return 1;
+		}
 		return 0;
+	}
 	if (ipv6_addr_cmp(&addr1->v6.sin6_addr, &addr2->v6.sin6_addr))
 		return 0;
 	/* If this is a linklocal address, compare the scope_id. */
@@ -427,7 +464,7 @@ static int sctp_v6_is_any(const union sctp_addr *addr)
 }
 
 /* Should this be available for binding?   */
-static int sctp_v6_available(const union sctp_addr *addr)
+static int sctp_v6_available(union sctp_addr *addr, struct sctp_opt *sp)
 {
 	int type;
 	struct in6_addr *in6 = (struct in6_addr *)&addr->v6.sin6_addr;
@@ -435,6 +472,14 @@ static int sctp_v6_available(const union sctp_addr *addr)
 	type = ipv6_addr_type(in6);
 	if (IPV6_ADDR_ANY == type)
 		return 1;
+	if (type == IPV6_ADDR_MAPPED) {
+		if (sp && !sp->v4mapped)
+			return 0;
+		if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
+			return 0;
+		sctp_v6_map_v4(addr);
+		return sctp_get_af_specific(AF_INET)->available(addr, sp);
+	}
 	if (!(type & IPV6_ADDR_UNICAST))
 		return 0;
 
@@ -448,11 +493,22 @@ static int sctp_v6_available(const union sctp_addr *addr)
  * Return 0 - If the address is a non-unicast or an illegal address.
  * Return 1 - If the address is a unicast.
  */
-static int sctp_v6_addr_valid(union sctp_addr *addr)
+static int sctp_v6_addr_valid(union sctp_addr *addr, struct sctp_opt *sp)
 {
 	int ret = ipv6_addr_type(&addr->v6.sin6_addr);
 
-	/* FIXME:  v4-mapped-v6 address support. */
+	/* Support v4-mapped-v6 address. */
+	if (ret == IPV6_ADDR_MAPPED) {
+		/* Note: This routine is used in input, so v4-mapped-v6
+		 * are disallowed here when there is no sctp_opt.
+		 */
+		if (!sp || !sp->v4mapped)
+			return 0;
+		if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
+			return 0;
+		sctp_v6_map_v4(addr);
+		return sctp_get_af_specific(AF_INET)->addr_valid(addr, sp);
+	}
 
 	/* Is this a non-unicast address */
 	if (!(ret & IPV6_ADDR_UNICAST))
@@ -536,7 +592,7 @@ struct sock *sctp_v6_create_accept_sk(struct sock *sk,
 	newnp->saddr = np->saddr;
 	newnp->rcv_saddr = np->rcv_saddr;
 	newinet->dport = htons(asoc->peer.port);
-	newnp->daddr =  asoc->peer.primary_addr.v6.sin6_addr;
+	sctp_v6_to_sk_daddr(&asoc->peer.primary_addr, newsk);
 
 	/* Init the ipv4 part of the socket since we can have sockets
 	 * using v6 API for ipv4.
@@ -566,6 +622,13 @@ struct sock *sctp_v6_create_accept_sk(struct sock *sk,
 	return newsk;
 }
 
+/* Map v4 address to mapped v6 address */
+static void sctp_v6_addr_v4map(struct sctp_opt *sp, union sctp_addr *addr)
+{
+	if (sp->v4mapped && AF_INET == addr->sa.sa_family)
+		sctp_v4_map_v6(addr);
+}
+
 /* Where did this skb come from?  */
 static int sctp_v6_skb_iif(const struct sk_buff *skb)
 {
@@ -606,25 +669,28 @@ static void sctp_inet6_event_msgname(struct sctp_ulpevent *event,
 
 	if (msgname) {
 		union sctp_addr *addr;
+		struct sctp_association *asoc;
 
+		asoc = event->sndrcvinfo.sinfo_assoc_id;
 		sctp_inet6_msgname(msgname, addrlen);
 		sin6 = (struct sockaddr_in6 *)msgname;
-		sin6->sin6_port = htons(event->asoc->peer.port);
-		addr = &event->asoc->peer.primary_addr;
+		sin6->sin6_port = htons(asoc->peer.port);
+		addr = &asoc->peer.primary_addr;
 
 		/* Note: If we go to a common v6 format, this code
 		 * will change.
 		 */
 
 		/* Map ipv4 address into v4-mapped-on-v6 address.  */
-		if (AF_INET == addr->sa.sa_family) {
-			/* FIXME: Easy, but there was no way to test this
-			 * yet.
-			 */
+		if (sctp_sk(asoc->base.sk)->v4mapped &&
+		    AF_INET == addr->sa.sa_family) {
+			sctp_v4_map_v6((union sctp_addr *)sin6);
+			sin6->sin6_addr.s6_addr32[3] =
+				addr->v4.sin_addr.s_addr;
 			return;
 		}
 
-		sin6from = &event->asoc->peer.primary_addr.v6;
+		sin6from = &asoc->peer.primary_addr.v6;
 		ipv6_addr_copy(&sin6->sin6_addr, &sin6from->sin6_addr);
 		if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
 			sin6->sin6_scope_id = sin6from->sin6_scope_id;
@@ -644,16 +710,15 @@ static void sctp_inet6_skb_msgname(struct sk_buff *skb, char *msgname,
 		sh = (struct sctphdr *)skb->h.raw;
 		sin6->sin6_port = sh->source;
 
-		/* FIXME: Map ipv4 address into v4-mapped-on-v6 address. */
-		if (__constant_htons(ETH_P_IP) == skb->protocol) {
-			/* FIXME:  The latest I-D added options for two
-			 * behaviors.
-			 */
+		/* Map ipv4 address into v4-mapped-on-v6 address. */
+		if (sctp_sk(skb->sk)->v4mapped &&
+		    skb->nh.iph->version == 4) {
+			sctp_v4_map_v6((union sctp_addr *)sin6);
+			sin6->sin6_addr.s6_addr32[3] = skb->nh.iph->saddr;
 			return;
 		}
 
 		/* Otherwise, just copy the v6 address. */
-
 		ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
 		if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
 			struct sctp_ulpevent *ev = sctp_skb2event(skb);
@@ -663,15 +728,14 @@ static void sctp_inet6_skb_msgname(struct sk_buff *skb, char *msgname,
 }
 
 /* Do we support this AF? */
-static int sctp_inet6_af_supported(sa_family_t family)
+static int sctp_inet6_af_supported(sa_family_t family, struct sctp_opt *sp)
 {
-	/* FIXME:  v4-mapped-v6 addresses.  The I-D is still waffling
-	 * on what to do with sockaddr formats for PF_INET6 sockets.
-	 * For now assume we'll support both.
-	 */
 	switch (family) {
 	case AF_INET6:
+		return 1;
+	/* v4-mapped-v6 addresses */
 	case AF_INET:
+		if (!__ipv6_only_sock(sctp_opt2sk(sp)) && sp->v4mapped)
 			return 1;
 	default:
 		return 0;
@@ -716,7 +780,7 @@ static int sctp_inet6_bind_verify(struct sctp_opt *opt, union sctp_addr *addr)
 	else {
 		struct sock *sk;
 		int type = ipv6_addr_type(&addr->v6.sin6_addr);
-		sk = &container_of(opt, struct sctp6_sock, sctp)->sk;
+		sk = sctp_opt2sk(opt);
 		if (type & IPV6_ADDR_LINKLOCAL) {
 			/* Note: Behavior similar to af_inet6.c:
 			 *  1) Overrides previous bound_dev_if
@@ -730,7 +794,7 @@ static int sctp_inet6_bind_verify(struct sctp_opt *opt, union sctp_addr *addr)
 		}
 		af = opt->pf->af;
 	}
-	return af->available(addr);
+	return af->available(addr, opt);
 }
 
 /* Verify that the provided sockaddr looks bindable.   Common verification,
@@ -746,7 +810,7 @@ static int sctp_inet6_send_verify(struct sctp_opt *opt, union sctp_addr *addr)
 	else {
 		struct sock *sk;
 		int type = ipv6_addr_type(&addr->v6.sin6_addr);
-		sk = &container_of(opt, struct sctp6_sock, sctp)->sk;
+		sk = sctp_opt2sk(opt);
 		if (type & IPV6_ADDR_LINKLOCAL) {
 			/* Note: Behavior similar to af_inet6.c:
 			 *  1) Overrides previous bound_dev_if
@@ -863,6 +927,7 @@ static struct sctp_pf sctp_pf_inet6_specific = {
 	.send_verify   = sctp_inet6_send_verify,
 	.supported_addrs = sctp_inet6_supported_addrs,
 	.create_accept_sk = sctp_v6_create_accept_sk,
+	.addr_v4map    = sctp_v6_addr_v4map,
 	.af            = &sctp_ipv6_specific,
 };
 

net/sctp/output.c

@@ -97,6 +97,7 @@ struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
 	packet->source_port = sport;
 	packet->destination_port = dport;
 	skb_queue_head_init(&packet->chunks);
+	packet->size = SCTP_IP_OVERHEAD;
 	packet->vtag = 0;
 	packet->ecn_capable = 0;
 	packet->get_prepend_chunk = NULL;
@@ -219,9 +220,8 @@ sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *packet,
 		/* Both control chunks and data chunks with TSNs are
 		 * non-fragmentable.
 		 */
-		if (packet_empty) {
-
-			/* We no longer do refragmentation at all.
+		if (packet_empty || !sctp_chunk_is_data(chunk)) {
+			/* We no longer do re-fragmentation.
 			 * Just fragment at the IP layer, if we
 			 * actually hit this condition
 			 */
@@ -229,7 +229,7 @@ sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *packet,
 			packet->ipfragok = 1;
 			goto append;
 
-		} else { /* !packet_empty */
+		} else {
 			retval = SCTP_XMIT_PMTU_FULL;
 			goto finish;
 		}
@@ -283,20 +283,18 @@ int sctp_packet_transmit(struct sctp_packet *packet)
 	__u8 has_data = 0;
 	struct dst_entry *dst;
 
-	/* Do NOT generate a chunkless packet... */
-	if (skb_queue_empty(&packet->chunks))
+	/* Do NOT generate a chunkless packet. */
+	chunk = (struct sctp_chunk *)skb_peek(&packet->chunks);
+	if (unlikely(!chunk))
 		return err;
 
 	/* Set up convenience variables... */
-	chunk = (struct sctp_chunk *) (packet->chunks.next);
 	sk = chunk->skb->sk;
 
 	/* Allocate the new skb.  */
 	nskb = dev_alloc_skb(packet->size);
-	if (!nskb) {
-		err = -ENOMEM;
-		goto out;
-	}
+	if (!nskb)
+		goto nomem;
 
 	/* Make sure the outbound skb has enough header room reserved. */
 	skb_reserve(nskb, SCTP_IP_OVERHEAD);
@@ -468,9 +466,11 @@ int sctp_packet_transmit(struct sctp_packet *packet)
 	if (!nskb->dst)
 		goto no_route;
 
-	SCTP_DEBUG_PRINTK("***sctp_transmit_packet*** skb length %d\n",
+	SCTP_DEBUG_PRINTK("***sctp_transmit_packet*** skb len %d\n",
 			  nskb->len);
+
 	(*tp->af_specific->sctp_xmit)(nskb, tp, packet->ipfragok);
+
 out:
 	packet->size = SCTP_IP_OVERHEAD;
 	return err;
@@ -486,7 +486,20 @@ int sctp_packet_transmit(struct sctp_packet *packet)
 	 * required.
 	 */
 	 /* err = -EHOSTUNREACH; */
+err:
+	/* Control chunks are unreliable so just drop them.  DATA chunks
+	 * will get resent or dropped later.
+	 */
+
+	while ((chunk = (struct sctp_chunk *)__skb_dequeue(&packet->chunks))) {
+		if (!sctp_chunk_is_data(chunk))
+    			sctp_chunk_free(chunk);
+	}
 	goto out;
+nomem:
+	err = -ENOMEM;
+	printk("%s alloc_skb failed.\n", __FUNCTION__);
+	goto err;
 }
 
 /********************************************************************

net/sctp/outqueue.c

@@ -258,7 +258,7 @@ void sctp_outq_teardown(struct sctp_outq *q)
 
 	/* Throw away chunks that have been gap ACKed.  */
 	list_for_each_safe(lchunk, temp, &q->sacked) {
-		list_del(lchunk);
+		list_del_init(lchunk);
 		chunk = list_entry(lchunk, struct sctp_chunk,
 				   transmitted_list);
 		sctp_datamsg_fail(chunk, q->error);
@@ -267,7 +267,7 @@ void sctp_outq_teardown(struct sctp_outq *q)
 
 	/* Throw away any chunks in the retransmit queue. */
 	list_for_each_safe(lchunk, temp, &q->retransmit) {
-		list_del(lchunk);
+		list_del_init(lchunk);
 		chunk = list_entry(lchunk, struct sctp_chunk,
 				   transmitted_list);
 		sctp_datamsg_fail(chunk, q->error);
@@ -445,7 +445,7 @@ void sctp_retransmit_mark(struct sctp_outq *q,
 			/* Move the chunk to the retransmit queue. The chunks
 			 * on the retransmit queue is always kept in order.
 			 */
-			list_del(lchunk);
+			list_del_init(lchunk);
 			sctp_retransmit_insert(lchunk, q);
 		}
 	}
@@ -1007,7 +1007,7 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_sackhdr *sack)
 	struct sctp_association *asoc = q->asoc;
 	struct sctp_transport *transport;
 	struct sctp_chunk *tchunk;
-	struct list_head *lchunk, *transport_list, *pos;
+	struct list_head *lchunk, *transport_list, *pos, *temp;
 	sctp_sack_variable_t *frags = sack->variable;
 	__u32 sack_ctsn, ctsn, tsn;
 	__u32 highest_tsn, highest_new_tsn;
@@ -1115,15 +1115,13 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_sackhdr *sack)
 			  "%p is 0x%x.\n", __FUNCTION__, asoc, ctsn);
 
 	/* Throw away stuff rotting on the sack queue.  */
-	list_for_each(lchunk, &q->sacked) {
+	list_for_each_safe(lchunk, temp, &q->sacked) {
 		tchunk = list_entry(lchunk, struct sctp_chunk,
 				    transmitted_list);
 		tsn = ntohl(tchunk->subh.data_hdr->tsn);
-		if (TSN_lte(tsn, ctsn)) {
-			lchunk = lchunk->prev;
+		if (TSN_lte(tsn, ctsn))
 			sctp_chunk_free(tchunk);
 	}
-	}
 
 	/* ii) Set rwnd equal to the newly received a_rwnd minus the
 	 *     number of bytes still outstanding after processing the

net/sctp/protocol.c

@@ -340,7 +340,7 @@ static int sctp_v4_is_any(const union sctp_addr *addr)
  * Return 0 - If the address is a non-unicast or an illegal address.
  * Return 1 - If the address is a unicast.
  */
-static int sctp_v4_addr_valid(union sctp_addr *addr)
+static int sctp_v4_addr_valid(union sctp_addr *addr, struct sctp_opt *sp)
 {
 	/* Is this a non-unicast address or a unusable SCTP address? */
 	if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr))
@@ -350,7 +350,7 @@ static int sctp_v4_addr_valid(union sctp_addr *addr)
 }
 
 /* Should this be available for binding?   */
-static int sctp_v4_available(const union sctp_addr *addr)
+static int sctp_v4_available(union sctp_addr *addr, struct sctp_opt *sp)
 {
 	int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
 
@@ -580,6 +580,12 @@ struct sock *sctp_v4_create_accept_sk(struct sock *sk,
 	return newsk;
 }
 
+/* Map address, empty for v4 family */
+static void sctp_v4_addr_v4map(struct sctp_opt *sp, union sctp_addr *addr)
+{
+	/* Empty */
+}
+
 /* Dump the v4 addr to the seq file. */
 static void sctp_v4_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr)
 {
@@ -685,10 +691,13 @@ static void sctp_inet_event_msgname(struct sctp_ulpevent *event, char *msgname,
 	struct sockaddr_in *sin, *sinfrom;
 
 	if (msgname) {
+		struct sctp_association *asoc;
+
+		asoc = event->sndrcvinfo.sinfo_assoc_id;
 		sctp_inet_msgname(msgname, addr_len);
 		sin = (struct sockaddr_in *)msgname;
-		sinfrom = &event->asoc->peer.primary_addr.v4;
-		sin->sin_port = htons(event->asoc->peer.port);
+		sinfrom = &asoc->peer.primary_addr.v4;
+		sin->sin_port = htons(asoc->peer.port);
 		sin->sin_addr.s_addr = sinfrom->sin_addr.s_addr;
 	}
 }
@@ -709,7 +718,7 @@ static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *len)
 }
 
 /* Do we support this AF? */
-static int sctp_inet_af_supported(sa_family_t family)
+static int sctp_inet_af_supported(sa_family_t family, struct sctp_opt *sp)
 {
 	/* PF_INET only supports AF_INET addresses. */
 	return (AF_INET == family);
@@ -737,7 +746,7 @@ static int sctp_inet_cmp_addr(const union sctp_addr *addr1,
  */
 static int sctp_inet_bind_verify(struct sctp_opt *opt, union sctp_addr *addr)
 {
-	return sctp_v4_available(addr);
+	return sctp_v4_available(addr, opt);
 }
 
 /* Verify that sockaddr looks sendable.  Common verification has already
@@ -783,6 +792,7 @@ static struct sctp_pf sctp_pf_inet = {
 	.send_verify   = sctp_inet_send_verify,
 	.supported_addrs = sctp_inet_supported_addrs,
 	.create_accept_sk = sctp_v4_create_accept_sk,
+	.addr_v4map	= sctp_v4_addr_v4map,
 	.af            = &sctp_ipv4_specific,
 };
 

net/sctp/sm_make_chunk.c

@@ -667,7 +667,8 @@ struct sctp_chunk *sctp_make_sack(const struct sctp_association *asoc)
 }
 
 /* Make a SHUTDOWN chunk. */
-struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc)
+struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc,
+				      const struct sctp_chunk *chunk)
 {
 	struct sctp_chunk *retval;
 	sctp_shutdownhdr_t shut;
@@ -683,6 +684,9 @@ struct sctp_chunk *sctp_make_shutdown(const struct sctp_association *asoc)
 
 	retval->subh.shutdown_hdr =
 		sctp_addto_chunk(retval, sizeof(shut), &shut);
+
+	if (chunk)
+		retval->transport = chunk->transport;
 nodata:
 	return retval;
 }
@@ -1089,7 +1093,7 @@ void sctp_chunk_free(struct sctp_chunk *chunk)
 {
 	/* Make sure that we are not on any list.  */
 	skb_unlink((struct sk_buff *) chunk);
-	list_del(&chunk->transmitted_list);
+	list_del_init(&chunk->transmitted_list);
 
 	/* Release our reference on the message tracker. */
 	if (chunk->msg)
@@ -1850,7 +1854,7 @@ int sctp_process_init(struct sctp_association *asoc, sctp_cid_t cid,
 	/* Release the transport structures. */
 	list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {
 		transport = list_entry(pos, struct sctp_transport, transports);
-		list_del(pos);
+		list_del_init(pos);
 		sctp_transport_free(transport);
 	}
 nomem:

net/sctp/sm_sideeffect.c

@@ -962,7 +962,7 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
 			asoc->overall_error_count = 0;
 
 			/* Generate a SHUTDOWN chunk.  */
-			new_obj = sctp_make_shutdown(asoc);
+			new_obj = sctp_make_shutdown(asoc, chunk);
 			if (!new_obj)
 				goto nomem;
 			sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,

net/sctp/sm_statefuns.c

@@ -3862,7 +3862,7 @@ sctp_disposition_t sctp_sf_do_9_2_start_shutdown(
 	 * in the Cumulative TSN Ack field the last sequential TSN it
 	 * has received from the peer.
 	 */
-	reply = sctp_make_shutdown(asoc);
+	reply = sctp_make_shutdown(asoc, NULL);
 	if (!reply)
 		goto nomem;
 
@@ -4179,7 +4179,7 @@ sctp_disposition_t sctp_sf_t2_timer_expire(const struct sctp_endpoint *ep,
 
 	switch (asoc->state) {
 	case SCTP_STATE_SHUTDOWN_SENT:
-		reply = sctp_make_shutdown(asoc);
+		reply = sctp_make_shutdown(asoc, NULL);
 		break;
 
 	case SCTP_STATE_SHUTDOWN_ACK_SENT:

net/sctp/socket.c

@@ -156,6 +156,9 @@ struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
 	if (id_asoc && (id_asoc != addr_asoc))
 		return NULL;
 
+	sctp_get_pf_specific(sk->sk_family)->addr_v4map(sctp_sk(sk),
+						(union sctp_addr *)addr);
+
 	return transport;
 }
 
@@ -206,7 +209,7 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_opt *opt,
 		return NULL;
 
 	/* Does this PF support this AF? */
-	if (!opt->pf->af_supported(addr->sa.sa_family))
+	if (!opt->pf->af_supported(addr->sa.sa_family, opt))
 		return NULL;
 
 	/* If we get this far, af is valid. */
@@ -365,15 +368,15 @@ static int __sctp_bindx(struct sock *sk, struct sockaddr_storage *addrs,
 
 	SCTP_DEBUG_PRINTK("__sctp_bindx(sk: %p, addrs: %p, addrcnt: %d, "
 			  "flags: %s)\n", sk, addrs, addrcnt,
-			  (BINDX_ADD_ADDR == flags) ? "ADD" :
-			  ((BINDX_REM_ADDR == flags) ? "REM" : "BOGUS"));
+			  (SCTP_BINDX_ADD_ADDR == flags) ? "ADD" :
+			  ((SCTP_BINDX_REM_ADDR == flags) ? "REM" : "BOGUS"));
 
 	switch (flags) {
-	case BINDX_ADD_ADDR:
+	case SCTP_BINDX_ADD_ADDR:
 		retval = sctp_bindx_add(sk, addrs, addrcnt);
 		break;
 
-	case BINDX_REM_ADDR:
+	case SCTP_BINDX_REM_ADDR:
 		retval = sctp_bindx_rem(sk, addrs, addrcnt);
 		break;
 
@@ -768,8 +771,8 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 	}
 
 	/* Clean up any skbs sitting on the receive queue.  */
-	skb_queue_purge(&sk->sk_receive_queue);
-	skb_queue_purge(&sctp_sk(sk)->pd_lobby);
+	sctp_queue_purge_ulpevents(&sk->sk_receive_queue);
+	sctp_queue_purge_ulpevents(&sctp_sk(sk)->pd_lobby);
 
 	/* On a TCP-style socket, block for at most linger_time if set. */
 	if (sctp_style(sk, TCP) && timeout)
@@ -1342,10 +1345,10 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
 
 		/* When only partial message is copied to the user, increase
 		 * rwnd by that amount. If all the data in the skb is read,
-		 * rwnd is updated when the skb's destructor is called via
-		 * sctp_ulpevent_free().
+		 * rwnd is updated when the event is freed.
 		 */
-		sctp_assoc_rwnd_increase(event->asoc, copied);
+		sctp_assoc_rwnd_increase(event->sndrcvinfo.sinfo_assoc_id,
+					 copied);
 		goto out;
 	} else if ((event->msg_flags & MSG_NOTIFICATION) ||
 		   (event->msg_flags & MSG_EOR))
@@ -1354,7 +1357,18 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
 		msg->msg_flags &= ~MSG_EOR;
 
 out_free:
-	sctp_ulpevent_free(event); /* Free the skb. */
+	if (flags & MSG_PEEK) {
+		/* Release the skb reference acquired after peeking the skb in
+		 * sctp_skb_recv_datagram().
+		 */
+		kfree_skb(skb);
+	} else {
+		/* Free the event which includes releasing the reference to
+		 * the owner of the skb, freeing the skb and updating the
+		 * rwnd.
+		 */
+		sctp_ulpevent_free(event);
+	}
 out:
 	sctp_release_sock(sk);
 	return err;
@@ -1421,7 +1435,7 @@ static int sctp_setsockopt_autoclose(struct sock *sk, char *optval,
 	return 0;
 }
 
-/* 7.1.13 Peer Address Parameters (SCTP_SET_PEER_ADDR_PARAMS)
+/* 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS)
  *
  * Applications can enable or disable heartbeats for any peer address of
  * an association, modify an address's heartbeat interval, force a
@@ -1571,24 +1585,25 @@ static int sctp_setsockopt_default_send_param(struct sock *sk,
 	return 0;
 }
 
-/* 7.1.10 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
+/* 7.1.10 Set Peer Primary Address (SCTP_PRIMARY_ADDR)
  *
  * Requests that the local SCTP stack use the enclosed peer address as
  * the association primary.  The enclosed address must be one of the
  * association peer's addresses.
  */
-static int sctp_setsockopt_peer_prim(struct sock *sk, char *optval, int optlen)
+static int sctp_setsockopt_primary_addr(struct sock *sk, char *optval,
+					int optlen)
 {
-	struct sctp_setpeerprim prim;
+	struct sctp_prim prim;
 	struct sctp_transport *trans;
 
-	if (optlen != sizeof(struct sctp_setpeerprim))
+	if (optlen != sizeof(struct sctp_prim))
 		return -EINVAL;
 
-	if (copy_from_user(&prim, optval, sizeof(struct sctp_setpeerprim)))
+	if (copy_from_user(&prim, optval, sizeof(struct sctp_prim)))
 		return -EFAULT;
 
-	trans = sctp_addr_id2transport(sk, &prim.sspp_addr, prim.sspp_assoc_id);
+	trans = sctp_addr_id2transport(sk, &prim.ssp_addr, prim.ssp_assoc_id);
 	if (!trans)
 		return -EINVAL;
 
@@ -1682,8 +1697,8 @@ static int sctp_setsockopt_rtoinfo(struct sock *sk, char *optval, int optlen) {
  * See [SCTP] for more information.
  *
  */
-static int sctp_setsockopt_assocrtx(struct sock *sk, char *optval,
-				int optlen) {
+static int sctp_setsockopt_associnfo(struct sock *sk, char *optval, int optlen)
+{
 
 	struct sctp_assocparams assocparams;
 	struct sctp_association *asoc;
@@ -1736,14 +1751,18 @@ static int sctp_setsockopt_assocrtx(struct sock *sk, char *optval,
 static int sctp_setsockopt_mappedv4(struct sock *sk, char *optval, int optlen)
 {
 	int val;
+	struct sctp_opt *sp = sctp_sk(sk);
 
 	if (optlen < sizeof(int))
 		return -EINVAL;
 	if (get_user(val, (int *)optval))
 		return -EFAULT;
-	/* FIXME: Put real support here. */
+	if (val)
+		sp->v4mapped = 1;
+	else
+		sp->v4mapped = 0;
 
-	return -ENOPROTOOPT;
+	return 0;
 }
 
 /*
@@ -1794,7 +1813,6 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
 				char *optval, int optlen)
 {
 	int retval = 0;
-	char *tmp;
 
 	SCTP_DEBUG_PRINTK("sctp_setsockopt(sk: %p... optname: %d)\n",
 			  sk, optname);
@@ -1814,38 +1832,25 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
 	sctp_lock_sock(sk);
 
 	switch (optname) {
-	case SCTP_SOCKOPT_DEBUG_NAME:
-		/* BUG! we don't ever seem to free this memory. --jgrimm */
-		if (NULL == (tmp = kmalloc(optlen + 1, GFP_KERNEL))) {
-			retval = -ENOMEM;
-			goto out_unlock;
-		}
-
-		if (copy_from_user(tmp, optval, optlen)) {
-			retval = -EFAULT;
-			goto out_unlock;
-		}
-		tmp[optlen] = '\000';
-		sctp_sk(sk)->ep->debug_name = tmp;
-		break;
-
 	case SCTP_SOCKOPT_BINDX_ADD:
 		/* 'optlen' is the size of the addresses buffer. */
 		retval = sctp_setsockopt_bindx(sk, (struct sockaddr_storage *)
-					       optval, optlen, BINDX_ADD_ADDR);
+					       optval, optlen,
+					       SCTP_BINDX_ADD_ADDR);
 		break;
 
 	case SCTP_SOCKOPT_BINDX_REM:
 		/* 'optlen' is the size of the addresses buffer. */
 		retval = sctp_setsockopt_bindx(sk, (struct sockaddr_storage *)
-					       optval, optlen, BINDX_REM_ADDR);
+					       optval, optlen,
+					       SCTP_BINDX_REM_ADDR);
 		break;
 
 	case SCTP_DISABLE_FRAGMENTS:
 		retval = sctp_setsockopt_disable_fragments(sk, optval, optlen);
 		break;
 
-	case SCTP_SET_EVENTS:
+	case SCTP_EVENTS:
 		retval = sctp_setsockopt_events(sk, optval, optlen);
 		break;
 
@@ -1853,19 +1858,19 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
 		retval = sctp_setsockopt_autoclose(sk, optval, optlen);
 		break;
 
-	case SCTP_SET_PEER_ADDR_PARAMS:
+	case SCTP_PEER_ADDR_PARAMS:
 		retval = sctp_setsockopt_peer_addr_params(sk, optval, optlen);
 		break;
 
 	case SCTP_INITMSG:
 		retval = sctp_setsockopt_initmsg(sk, optval, optlen);
 		break;
-	case SCTP_SET_DEFAULT_SEND_PARAM:
+	case SCTP_DEFAULT_SEND_PARAM:
 		retval = sctp_setsockopt_default_send_param(sk, optval,
 							    optlen);
 		break;
-	case SCTP_SET_PEER_PRIMARY_ADDR:
-		retval = sctp_setsockopt_peer_prim(sk, optval, optlen);
+	case SCTP_PRIMARY_ADDR:
+		retval = sctp_setsockopt_primary_addr(sk, optval, optlen);
 		break;
 	case SCTP_NODELAY:
 		retval = sctp_setsockopt_nodelay(sk, optval, optlen);
@@ -1873,8 +1878,8 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
 	case SCTP_RTOINFO:
 		retval = sctp_setsockopt_rtoinfo(sk, optval, optlen);
 		break;
-	case SCTP_ASSOCRTXINFO:
-		retval = sctp_setsockopt_assocrtx(sk, optval, optlen);
+	case SCTP_ASSOCINFO:
+		retval = sctp_setsockopt_associnfo(sk, optval, optlen);
 		break;
 	case SCTP_I_WANT_MAPPED_V4_ADDR:
 		retval = sctp_setsockopt_mappedv4(sk, optval, optlen);
@@ -1887,7 +1892,6 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
 		break;
 	};
 
-out_unlock:
 	sctp_release_sock(sk);
 
 out_nounlock:
@@ -2163,7 +2167,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 	}
 
 	/* Default Peer Address Parameters.  These defaults can
-	 * be modified via SCTP_SET_PEER_ADDR_PARAMS
+	 * be modified via SCTP_PEER_ADDR_PARAMS
 	 */
 	sp->paddrparam.spp_hbinterval = (sctp_hb_interval / HZ) * 1000;
 	sp->paddrparam.spp_pathmaxrxt = sctp_max_retrans_path;
@@ -2309,6 +2313,9 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, char *optval,
 	status.sstat_primary.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
 	memcpy(&status.sstat_primary.spinfo_address,
 	       &(transport->ipaddr), sizeof(union sctp_addr));
+	/* Map ipv4 address into v4-mapped-on-v6 address.  */
+	sctp_get_pf_specific(sk->sk_family)->addr_v4map(sctp_sk(sk),
+		(union sctp_addr *)&status.sstat_primary.spinfo_address);
 	status.sstat_primary.spinfo_state = transport->active;
 	status.sstat_primary.spinfo_cwnd = transport->cwnd;
 	status.sstat_primary.spinfo_srtt = transport->srtt;
@@ -2408,12 +2415,13 @@ static int sctp_getsockopt_disable_fragments(struct sock *sk, int len,
 	return 0;
 }
 
-/* 7.1.15 Set notification and ancillary events (SCTP_SET_EVENTS)
+/* 7.1.15 Set notification and ancillary events (SCTP_EVENTS)
  *
  * This socket option is used to specify various notifications and
  * ancillary data the user wishes to receive.
  */
-static int sctp_getsockopt_set_events(struct sock *sk, int len, char *optval, int *optlen)
+static int sctp_getsockopt_events(struct sock *sk, int len, char *optval,
+				  int *optlen)
 {
 	if (len != sizeof(struct sctp_event_subscribe))
 		return -EINVAL;
@@ -2516,7 +2524,7 @@ static int sctp_getsockopt_peeloff(struct sock *sk, int len, char *optval, int *
 	return retval;
 }
 
-/* 7.1.13 Peer Address Parameters (SCTP_SET_PEER_ADDR_PARAMS)
+/* 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS)
  *
  * Applications can enable or disable heartbeats for any peer address of
  * an association, modify an address's heartbeat interval, force a
@@ -2645,6 +2653,8 @@ static int sctp_getsockopt_peer_addrs(struct sock *sk, int len,
 	struct sctp_getaddrs getaddrs;
 	struct sctp_transport *from;
 	struct sockaddr_storage *to;
+	union sctp_addr temp;
+	struct sctp_opt *sp = sctp_sk(sk);
 
 	if (len != sizeof(struct sctp_getaddrs))
 		return -EINVAL;
@@ -2663,7 +2673,9 @@ static int sctp_getsockopt_peer_addrs(struct sock *sk, int len,
 	to = getaddrs.addrs;
 	list_for_each(pos, &asoc->peer.transport_addr_list) {
 		from = list_entry(pos, struct sctp_transport, transports);
-		if (copy_to_user(to, &from->ipaddr, sizeof(from->ipaddr)))
+		memcpy(&temp, &from->ipaddr, sizeof(temp));
+		sctp_get_pf_specific(sk->sk_family)->addr_v4map(sp, &temp);
+		if (copy_to_user(to, &temp, sizeof(temp)))
 			return -EFAULT;
 		to ++;
 		cnt ++;
@@ -2725,6 +2737,8 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len,
 	struct sctp_getaddrs getaddrs;
 	struct sctp_sockaddr_entry *from;
 	struct sockaddr_storage *to;
+	union sctp_addr temp;
+	struct sctp_opt *sp = sctp_sk(sk);
 
 	if (len != sizeof(struct sctp_getaddrs))
 		return -EINVAL;
@@ -2753,7 +2767,9 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len,
 		from = list_entry(pos,
 				struct sctp_sockaddr_entry,
 				list);
-		if (copy_to_user(to, &from->a, sizeof(from->a)))
+		memcpy(&temp, &from->a, sizeof(temp));
+		sctp_get_pf_specific(sk->sk_family)->addr_v4map(sp, &temp);
+		if (copy_to_user(to, &temp, sizeof(temp)))
 			return -EFAULT;
 		to ++;
 		cnt ++;
@@ -2766,35 +2782,39 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len,
 	return 0;
 }
 
-/* 7.1.10 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
+/* 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR)
  *
  * Requests that the local SCTP stack use the enclosed peer address as
  * the association primary.  The enclosed address must be one of the
  * association peer's addresses.
  */
-static int sctp_getsockopt_peer_prim(struct sock *sk, int len,
+static int sctp_getsockopt_primary_addr(struct sock *sk, int len,
 					char *optval, int *optlen)
 {
-	struct sctp_setpeerprim prim;
+	struct sctp_prim prim;
 	struct sctp_association *asoc;
+	struct sctp_opt *sp = sctp_sk(sk);
 
-	if (len != sizeof(struct sctp_setpeerprim))
+	if (len != sizeof(struct sctp_prim))
 		return -EINVAL;
 
-	if (copy_from_user(&prim, optval, sizeof(struct sctp_setpeerprim)))
+	if (copy_from_user(&prim, optval, sizeof(struct sctp_prim)))
 		return -EFAULT;
 
-	asoc = sctp_id2assoc(sk, prim.sspp_assoc_id);
+	asoc = sctp_id2assoc(sk, prim.ssp_assoc_id);
 	if (!asoc)
 		return -EINVAL;
 
 	if (!asoc->peer.primary_path)
 		return -ENOTCONN;
 
-	memcpy(&prim.sspp_addr, &asoc->peer.primary_path->ipaddr,
+	memcpy(&prim.ssp_addr, &asoc->peer.primary_path->ipaddr,
 	       sizeof(union sctp_addr));
 
-	if (copy_to_user(optval, &prim, sizeof(struct sctp_setpeerprim)))
+	sctp_get_pf_specific(sk->sk_family)->addr_v4map(sp,
+			(union sctp_addr *)&prim.ssp_addr);
+
+	if (copy_to_user(optval, &prim, sizeof(struct sctp_prim)))
 		return -EFAULT;
 
 	return 0;
@@ -2808,6 +2828,8 @@ static int sctp_getsockopt_peer_prim(struct sock *sk, int len,
  *   specify a default set of parameters that would normally be supplied
  *   through the inclusion of ancillary data.  This socket option allows
  *   such an application to set the default sctp_sndrcvinfo structure.
+
+
  *   The application that wishes to use this socket option simply passes
  *   in to this call the sctp_sndrcvinfo structure defined in Section
  *   5.2.2) The input parameters accepted by this call include
@@ -2942,8 +2964,9 @@ static int sctp_getsockopt_rtoinfo(struct sock *sk, int len, char *optval,
  * See [SCTP] for more information.
  *
  */
-static int sctp_getsockopt_assocrtx(struct sock *sk, int len, char *optval,
-				int *optlen) {
+static int sctp_getsockopt_associnfo(struct sock *sk, int len, char *optval,
+				     int *optlen)
+{
 
 	struct sctp_assocparams assocparams;
 	struct sctp_association *asoc;
@@ -3014,12 +3037,13 @@ static int sctp_getsockopt_mappedv4(struct sock *sk, int len,
 				    char *optval, int *optlen)
 {
 	int val;
+	struct sctp_opt *sp = sctp_sk(sk);
+
 	if (len < sizeof(int))
 		return -EINVAL;
 
 	len = sizeof(int);
-	/* FIXME: Until we have support, return disabled. */
-	val = 0;
+	val = sp->v4mapped;
 	if (put_user(len, optlen))
 		return -EFAULT;
 	if (copy_to_user(optval, &val, len))
@@ -3091,8 +3115,8 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
 		retval = sctp_getsockopt_disable_fragments(sk, len, optval,
 							   optlen);
 		break;
-	case SCTP_SET_EVENTS:
-		retval = sctp_getsockopt_set_events(sk, len, optval, optlen);
+	case SCTP_EVENTS:
+		retval = sctp_getsockopt_events(sk, len, optval, optlen);
 		break;
 	case SCTP_AUTOCLOSE:
 		retval = sctp_getsockopt_autoclose(sk, len, optval, optlen);
@@ -3100,7 +3124,7 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
 	case SCTP_SOCKOPT_PEELOFF:
 		retval = sctp_getsockopt_peeloff(sk, len, optval, optlen);
 		break;
-	case SCTP_GET_PEER_ADDR_PARAMS:
+	case SCTP_PEER_ADDR_PARAMS:
 		retval = sctp_getsockopt_peer_addr_params(sk, len, optval,
 							  optlen);
 		break;
@@ -3123,12 +3147,12 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
 		retval = sctp_getsockopt_local_addrs(sk, len, optval,
 						     optlen);
 		break;
-	case SCTP_SET_DEFAULT_SEND_PARAM:
+	case SCTP_DEFAULT_SEND_PARAM:
 		retval = sctp_getsockopt_default_send_param(sk, len,
 							    optval, optlen);
 		break;
-	case SCTP_SET_PEER_PRIMARY_ADDR:
-		retval = sctp_getsockopt_peer_prim(sk, len, optval, optlen);
+	case SCTP_PRIMARY_ADDR:
+		retval = sctp_getsockopt_primary_addr(sk, len, optval, optlen);
 		break;
 	case SCTP_NODELAY:
 		retval = sctp_getsockopt_nodelay(sk, len, optval, optlen);
@@ -3136,8 +3160,8 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
 	case SCTP_RTOINFO:
 		retval = sctp_getsockopt_rtoinfo(sk, len, optval, optlen);
 		break;
-	case SCTP_ASSOCRTXINFO:
-		retval = sctp_getsockopt_assocrtx(sk, len, optval, optlen);
+	case SCTP_ASSOCINFO:
+		retval = sctp_getsockopt_associnfo(sk, len, optval, optlen);
 		break;
 	case SCTP_I_WANT_MAPPED_V4_ADDR:
 		retval = sctp_getsockopt_mappedv4(sk, len, optval, optlen);
@@ -3865,7 +3889,7 @@ static inline int sctp_verify_addr(struct sock *sk, union sctp_addr *addr,
 		return -EINVAL;
 
 	/* Is this a valid SCTP address?  */
-	if (!af->addr_valid(addr))
+	if (!af->addr_valid(addr, sctp_sk(sk)))
 		return -EINVAL;
 
 	if (!sctp_sk(sk)->pf->send_verify(sctp_sk(sk), (addr)))
@@ -4210,7 +4234,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 	 */
 	sctp_skb_for_each(skb, &oldsk->sk_receive_queue, tmp) {
 		event = sctp_skb2event(skb);
-		if (event->asoc == assoc) {
+		if (event->sndrcvinfo.sinfo_assoc_id == assoc) {
 			__skb_unlink(skb, skb->list);
 			__skb_queue_tail(&newsk->sk_receive_queue, skb);
 		}
@@ -4239,7 +4263,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 		 */
 		sctp_skb_for_each(skb, &oldsp->pd_lobby, tmp) {
 			event = sctp_skb2event(skb);
-			if (event->asoc == assoc) {
+			if (event->sndrcvinfo.sinfo_assoc_id == assoc) {
 				__skb_unlink(skb, skb->list);
 				__skb_queue_tail(queue, skb);
 			}

net/sctp/transport.c

@@ -117,6 +117,7 @@ struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
 	INIT_LIST_HEAD(&peer->transmitted);
 	INIT_LIST_HEAD(&peer->send_ready);
 	INIT_LIST_HEAD(&peer->transports);
+	sctp_packet_init(&peer->packet, peer, 0, 0);
 
 	/* Set up the retransmission timer.  */
 	init_timer(&peer->T3_rtx_timer);

net/sctp/ulpevent.c

@@ -35,6 +35,8 @@
  * Written or modified by:
  *    Jon Grimm             <jgrimm@us.ibm.com>
  *    La Monte H.P. Yarroll <piggy@acm.org>
+ *    Ardelle Fan	    <ardelle.fan@intel.com>
+ *    Sridhar Samudrala     <sri@us.ibm.com>
  *
  * Any bugs reported given to us we will try to fix... any fixes shared will
  * be incorporated into the next SCTP release.
@@ -46,10 +48,12 @@
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
 
-static void sctp_ulpevent_set_owner_r(struct sk_buff *skb,
-				      struct sctp_association *asoc);
-static void sctp_ulpevent_set_owner(struct sk_buff *skb,
+static inline void sctp_ulpevent_set_owner(struct sctp_ulpevent *event,
 					   const struct sctp_association *asoc);
+static inline void sctp_ulpevent_release_owner(struct sctp_ulpevent *event);
+static void sctp_ulpevent_receive_data(struct sctp_ulpevent *event,
+				       struct sctp_association *asoc);
+static void sctp_ulpevent_release_data(struct sctp_ulpevent *event);
 
 /* Create a new sctp_ulpevent.  */
 struct sctp_ulpevent *sctp_ulpevent_new(int size, int msg_flags, int gfp)
@@ -62,30 +66,19 @@ struct sctp_ulpevent *sctp_ulpevent_new(int size, int msg_flags, int gfp)
 		goto fail;
 
 	event = sctp_skb2event(skb);
-	event = sctp_ulpevent_init(event, msg_flags);
-	if (!event)
-		goto fail_init;
+	sctp_ulpevent_init(event, msg_flags);
+
 	return event;
 
-fail_init:
-	kfree_skb(skb);
 fail:
 	return NULL;
 }
 
 /* Initialize an ULP event from an given skb.  */
-struct sctp_ulpevent *sctp_ulpevent_init(struct sctp_ulpevent *event,
-					 int msg_flags)
+void sctp_ulpevent_init(struct sctp_ulpevent *event, int msg_flags)
 {
 	memset(event, sizeof(struct sctp_ulpevent), 0x00);
 	event->msg_flags = msg_flags;
-	return event;
-}
-
-/* Dispose of an event.  */
-void sctp_ulpevent_free(struct sctp_ulpevent *event)
-{
-	kfree_skb(sctp_event2skb(event));
 }
 
 /* Is this a MSG_NOTIFICATION?  */
@@ -189,7 +182,7 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 	 * All notifications for a given association have the same association
 	 * identifier.  For TCP style socket, this field is ignored.
 	 */
-	sctp_ulpevent_set_owner(skb, asoc);
+	sctp_ulpevent_set_owner(event, asoc);
 	sac->sac_assoc_id = sctp_assoc2id(asoc);
 
 	return event;
@@ -281,7 +274,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
 	 * All notifications for a given association have the same association
 	 * identifier.  For TCP style socket, this field is ignored.
 	 */
-	sctp_ulpevent_set_owner(skb, asoc);
+	sctp_ulpevent_set_owner(event, asoc);
 	spc->spc_assoc_id = sctp_assoc2id(asoc);
 
 	/* Sockets API Extensions for SCTP
@@ -294,6 +287,11 @@ struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
 	 */
 	memcpy(&spc->spc_aaddr, aaddr, sizeof(struct sockaddr_storage));
 
+	/* Map ipv4 address into v4-mapped-on-v6 address.  */
+	sctp_get_pf_specific(asoc->base.sk->sk_family)->addr_v4map(
+					sctp_sk(asoc->base.sk),
+					(union sctp_addr *)&spc->spc_aaddr);
+
 	return event;
 
 fail:
@@ -346,10 +344,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
 
 	/* Embed the event fields inside the cloned skb.  */
 	event = sctp_skb2event(skb);
-	event = sctp_ulpevent_init(event, MSG_NOTIFICATION);
-
-	if (!event)
-		goto fail;
+	sctp_ulpevent_init(event, MSG_NOTIFICATION);
 
 	sre = (struct sctp_remote_error *)
 		skb_push(skb, sizeof(struct sctp_remote_error));
@@ -402,8 +397,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
 	 * All notifications for a given association have the same association
 	 * identifier.  For TCP style socket, this field is ignored.
 	 */
-	skb = sctp_event2skb(event);
-	sctp_ulpevent_set_owner(skb, asoc);
+	sctp_ulpevent_set_owner(event, asoc);
 	sre->sre_assoc_id = sctp_assoc2id(asoc);
 
 	return event;
@@ -442,9 +436,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_send_failed(
 
 	/* Embed the event fields inside the cloned skb.  */
 	event = sctp_skb2event(skb);
-	event = sctp_ulpevent_init(event, MSG_NOTIFICATION);
-	if (!event)
-		goto fail;
+	sctp_ulpevent_init(event, MSG_NOTIFICATION);
 
 	ssf = (struct sctp_send_failed *)
 		skb_push(skb, sizeof(struct sctp_send_failed));
@@ -515,8 +507,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_send_failed(
 	 * same association identifier.  For TCP style socket, this field is
 	 * ignored.
 	 */
-	skb = sctp_event2skb(event);
-	sctp_ulpevent_set_owner(skb, asoc);
+	sctp_ulpevent_set_owner(event, asoc);
 	ssf->ssf_assoc_id = sctp_assoc2id(asoc);
 	return event;
 
@@ -579,7 +570,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
 	 * All notifications for a given association have the same association
 	 * identifier.  For TCP style socket, this field is ignored.
 	 */
-	sctp_ulpevent_set_owner(skb, asoc);
+	sctp_ulpevent_set_owner(event, asoc);
 	sse->sse_assoc_id = sctp_assoc2id(asoc);
 
 	return event;
@@ -601,7 +592,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
 {
 	struct sctp_ulpevent *event;
 	struct sctp_sndrcvinfo *info;
-	struct sk_buff *skb, *list;
+	struct sk_buff *skb;
 	size_t padding, len;
 
 	/* Clone the original skb, sharing the data.  */
@@ -627,24 +618,15 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
 	/* Fixup cloned skb with just this chunks data.  */
 	skb_trim(skb, chunk->chunk_end - padding - skb->data);
 
-	/* Set up a destructor to do rwnd accounting.  */
-	sctp_ulpevent_set_owner_r(skb, asoc);
-
 	/* Embed the event fields inside the cloned skb.  */
 	event = sctp_skb2event(skb);
 
 	/* Initialize event with flags 0.  */
-	event = sctp_ulpevent_init(event, 0);
-	if (!event)
-		goto fail_init;
+	sctp_ulpevent_init(event, 0);
 
 	event->iif = sctp_chunk_iif(chunk);
-	/* Note:  Not clearing the entire event struct as
-	 * this is just a fragment of the real event.  However,
-	 * we still need to do rwnd accounting.
-	 */
-	for (list = skb_shinfo(skb)->frag_list; list; list = list->next)
-		sctp_ulpevent_set_owner_r(list, asoc);
+
+	sctp_ulpevent_receive_data(event, asoc);
 
 	info = (struct sctp_sndrcvinfo *) &event->sndrcvinfo;
 
@@ -735,9 +717,6 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
 
 	return event;
 
-fail_init:
-	kfree_skb(skb);
-
 fail:
 	return NULL;
 }
@@ -754,7 +733,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
 	const struct sctp_association *asoc, __u32 indication, int gfp)
 {
 	struct sctp_ulpevent *event;
-	struct sctp_rcv_pdapi_event *pd;
+	struct sctp_pdapi_event *pd;
 	struct sk_buff *skb;
 
 	event = sctp_ulpevent_new(sizeof(struct sctp_assoc_change),
@@ -763,8 +742,8 @@ struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
 		goto fail;
 
 	skb = sctp_event2skb(event);
-	pd = (struct sctp_rcv_pdapi_event *)
-		skb_put(skb, sizeof(struct sctp_rcv_pdapi_event));
+	pd = (struct sctp_pdapi_event *)
+		skb_put(skb, sizeof(struct sctp_pdapi_event));
 
 	/* pdapi_type
 	 *   It should be SCTP_PARTIAL_DELIVERY_EVENT
@@ -779,9 +758,9 @@ struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
 	 *
 	 * This field is the total length of the notification data, including
 	 * the notification header.  It will generally be sizeof (struct
-	 * sctp_rcv_pdapi_event).
+	 * sctp_pdapi_event).
 	 */
-	pd->pdapi_length = sizeof(struct sctp_rcv_pdapi_event);
+	pd->pdapi_length = sizeof(struct sctp_pdapi_event);
 
         /*  pdapi_indication: 32 bits (unsigned integer)
 	 *
@@ -793,6 +772,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
 	 *
 	 * The association id field, holds the identifier for the association.
 	 */
+	sctp_ulpevent_set_owner(event, asoc);
 	pd->pdapi_assoc_id = sctp_assoc2id(asoc);
 
 	return event;
@@ -810,7 +790,7 @@ __u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event)
 
 	skb = sctp_event2skb((struct sctp_ulpevent *)event);
 	notification = (union sctp_notification *) skb->data;
-	return notification->h.sn_type;
+	return notification->sn_header.sn_type;
 }
 
 /* Copy out the sndrcvinfo into a msghdr.  */
@@ -824,69 +804,115 @@ void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
 	}
 }
 
-/* Do accounting for bytes just read by user.  */
-static void sctp_rcvmsg_rfree(struct sk_buff *skb)
+/* Stub skb destructor.  */
+static void sctp_stub_rfree(struct sk_buff *skb)
 {
-	struct sctp_association *asoc;
-	struct sctp_ulpevent *event;
-
-	/* Current stack structures assume that the rcv buffer is
-	 * per socket.   For UDP style sockets this is not true as
-	 * multiple associations may be on a single UDP-style socket.
-	 * Use the local private area of the skb to track the owning
-	 * association.
+/* WARNING:  This function is just a warning not to use the
+ * skb destructor.  If the skb is shared, we may get the destructor
+ * callback on some processor that does not own the sock_lock.  This
+ * was occuring with PACKET socket applications that were monitoring
+ * our skbs.   We can't take the sock_lock, because we can't risk
+ * recursing if we do really own the sock lock.  Instead, do all
+ * of our rwnd manipulation while we own the sock_lock outright.
  */
-	event = sctp_skb2event(skb);
-	asoc = event->asoc;
-	sctp_assoc_rwnd_increase(asoc, skb_headlen(skb));
-	sctp_association_put(asoc);
 }
 
-/* Charge receive window for bytes received.  */
-static void sctp_ulpevent_set_owner_r(struct sk_buff *skb,
-				      struct sctp_association *asoc)
+/* Hold the association in case the msg_name needs read out of
+ * the association.
+ */
+static inline void sctp_ulpevent_set_owner(struct sctp_ulpevent *event,
+					   const struct sctp_association *asoc)
 {
-	struct sctp_ulpevent *event;
+	struct sk_buff *skb;
 
-	/* The current stack structures assume that the rcv buffer is
-	 * per socket.  For UDP-style sockets this is not true as
-	 * multiple associations may be on a single UDP-style socket.
-	 * We use the local private area of the skb to track the owning
-	 * association.
+	/* Cast away the const, as we are just wanting to
+	 * bump the reference count.
 	 */
-	sctp_association_hold(asoc);
+	sctp_association_hold((struct sctp_association *)asoc);
+	skb = sctp_event2skb(event);
 	skb->sk = asoc->base.sk;
-	event = sctp_skb2event(skb);
-	event->asoc = asoc;
-
-	skb->destructor = sctp_rcvmsg_rfree;
-
-	sctp_assoc_rwnd_decrease(asoc, skb_headlen(skb));
+	event->sndrcvinfo.sinfo_assoc_id = sctp_assoc2id(asoc);
+	skb->destructor = sctp_stub_rfree;
 }
 
 /* A simple destructor to give up the reference to the association. */
-static void sctp_ulpevent_rfree(struct sk_buff *skb)
+static inline void sctp_ulpevent_release_owner(struct sctp_ulpevent *event)
 {
-	struct sctp_ulpevent *event;
+	sctp_association_put(event->sndrcvinfo.sinfo_assoc_id);
+}
 
-	event = sctp_skb2event(skb);
-	sctp_association_put(event->asoc);
+/* Do accounting for bytes received and hold a reference to the association
+ * for each skb.
+ */
+static void sctp_ulpevent_receive_data(struct sctp_ulpevent *event,
+				       struct sctp_association *asoc)
+{
+	struct sk_buff *skb, *frag;
+
+	skb = sctp_event2skb(event);
+	/* Set the owner and charge rwnd for bytes received.  */
+	sctp_ulpevent_set_owner(event, asoc);
+	sctp_assoc_rwnd_decrease(asoc, skb_headlen(skb));
+
+	/* Note:  Not clearing the entire event struct as this is just a
+	 * fragment of the real event.  However, we still need to do rwnd
+	 * accounting.
+	 * In general, the skb passed from IP can have only 1 level of
+	 * fragments. But we allow multiple levels of fragments. 
+	 */
+	for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next) {
+		sctp_ulpevent_receive_data(sctp_skb2event(frag), asoc);
+	}
 }
 
-/* Hold the association in case the msg_name needs read out of
+/* Do accounting for bytes just read by user and release the references to
  * the association.
  */ 
-static void sctp_ulpevent_set_owner(struct sk_buff *skb,
-				    const struct sctp_association *asoc)
+static void sctp_ulpevent_release_data(struct sctp_ulpevent *event)
 {
-	struct sctp_ulpevent *event;
+	struct sk_buff *skb, *frag;
 
-	/* Cast away the const, as we are just wanting to
-	 * bump the reference count.
+	/* Current stack structures assume that the rcv buffer is
+	 * per socket.   For UDP style sockets this is not true as
+	 * multiple associations may be on a single UDP-style socket.
+	 * Use the local private area of the skb to track the owning
+	 * association.
 	 */
-	sctp_association_hold((struct sctp_association *)asoc);
-	skb->sk = asoc->base.sk;
-	event = sctp_skb2event(skb);
-	event->asoc = (struct sctp_association *)asoc;
-	skb->destructor = sctp_ulpevent_rfree;
+
+	skb = sctp_event2skb(event);
+	sctp_assoc_rwnd_increase(event->sndrcvinfo.sinfo_assoc_id,
+				 skb_headlen(skb));
+
+	/* Don't forget the fragments. */
+	for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next) {
+		/* NOTE:  skb_shinfos are recursive. Although IP returns
+		 * skb's with only 1 level of fragments, SCTP reassembly can
+		 * increase the levels.
+		 */
+		sctp_ulpevent_release_data(sctp_skb2event(frag));
+	}
+	sctp_ulpevent_release_owner(event);
+}
+
+/* Free a ulpevent that has an owner.  It includes releasing the reference
+ * to the owner, updating the rwnd in case of a DATA event and freeing the
+ * skb.
+ * See comments in sctp_stub_rfree().
+ */
+void sctp_ulpevent_free(struct sctp_ulpevent *event)
+{
+	if (sctp_ulpevent_is_notification(event))
+		sctp_ulpevent_release_owner(event);
+	else
+		sctp_ulpevent_release_data(event);
+
+	kfree_skb(sctp_event2skb(event));
+}
+
+/* Purge the skb lists holding ulpevents. */
+void sctp_queue_purge_ulpevents(struct sk_buff_head *list)
+{
+	struct sk_buff *skb;
+	while ((skb = skb_dequeue(list)) != NULL)
+		sctp_ulpevent_free(sctp_skb2event(skb));
 }

net/sctp/ulpqueue.c

@@ -235,9 +235,9 @@ int sctp_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sctp_ulpevent *event)
 
 out_free:
 	if (sctp_event2skb(event)->list)
-		skb_queue_purge(sctp_event2skb(event)->list);
+		sctp_queue_purge_ulpevents(sctp_event2skb(event)->list);
 	else
-		kfree_skb(sctp_event2skb(event));
+		sctp_ulpevent_free(event);
 	return 0;
 }
 
@@ -289,7 +289,7 @@ static inline void sctp_ulpq_store_reasm(struct sctp_ulpq *ulpq,
  * payload was fragmented on the way and ip had to reassemble them.
  * We add the rest of skb's to the first skb's fraglist.
  */
-static inline struct sctp_ulpevent *sctp_make_reassembled_event(struct sk_buff *f_frag, struct sk_buff *l_frag)
+static struct sctp_ulpevent *sctp_make_reassembled_event(struct sk_buff *f_frag, struct sk_buff *l_frag)
 {
 	struct sk_buff *pos;
 	struct sctp_ulpevent *event;
@@ -329,7 +329,6 @@ static inline struct sctp_ulpevent *sctp_make_reassembled_event(struct sk_buff *
 		/* Break if we have reached the last fragment.  */
 		if (pos == l_frag)
 			break;
-
 		pos->next = pnext;
 		pos = pnext;
 	};