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Commit 28b9daad authored by David S. Miller's avatar David S. Miller
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Merge nuts.ninka.net:/home/davem/src/BK/sctp-2.5 

into nuts.ninka.net:/home/davem/src/BK/net-2.5
parents f7efec4a 89de669a
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include/net/sctp/command.h
View file @ 28b9daad
......@@ -27,6 +27,7 @@
*
* La Monte H.P. Yarroll <piggy@acm.org>
* Karl Knutson <karl@athena.chicago.il.us>
* Ardelle Fan <ardelle.fan@intel.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
......@@ -72,6 +73,7 @@ typedef enum {
SCTP_CMD_STRIKE, /* Mark a strike against a transport. */
SCTP_CMD_TRANSMIT, /* Transmit the outqueue. */
SCTP_CMD_HB_TIMERS_START, /* Start the heartbeat timers. */
SCTP_CMD_HB_TIMERS_UPDATE, /* Update the heartbeat timers. */
SCTP_CMD_TRANSPORT_RESET, /* Reset the status of a transport. */
SCTP_CMD_TRANSPORT_ON, /* Mark the transport as active. */
SCTP_CMD_REPORT_ERROR, /* Pass this error back out of the sm. */
......@@ -83,6 +85,7 @@ typedef enum {
SCTP_CMD_UPDATE_ASSOC, /* Update association information. */
SCTP_CMD_PURGE_OUTQUEUE, /* Purge all data waiting to be sent. */
SCTP_CMD_SETUP_T2, /* Hi-level, setup T2-shutdown parms. */
SCTP_CMD_RTO_PENDING, /* Set transport's rto_pending. */
SCTP_CMD_LAST
} sctp_verb_t;
......
include/net/sctp/sctp.h
View file @ 28b9daad
/* 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) 2001-2002 International Business Machines, Corp.
* Copyright (c) 2001 Intel Corp.
*
*
* This file is part of the SCTP kernel reference Implementation
*
* The base lksctp header.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
*
* The base lksctp header.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* The SCTP reference implementation is distributed in the hope that it
*
* The SCTP reference implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Written or modified by:
* La Monte H.P. Yarroll <piggy@acm.org>
* Xingang Guo <xingang.guo@intel.com>
* Jon Grimm <jgrimm@us.ibm.com>
* Daisy Chang <daisyc@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.
*/
......@@ -52,10 +52,10 @@
* structs
* prototypes
* macros, externs, and inlines
*
* Move test_frame specific items out of the kernel headers
*
* Move test_frame specific items out of the kernel headers
* and into the test frame headers. This is not perfect in any sense
* and will continue to evolve.
* and will continue to evolve.
*/
......@@ -78,7 +78,7 @@
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
#include <net/ipv6.h>
#include <net/ip6_route.h>
#endif
#endif
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -105,19 +105,19 @@
#endif
/* Certain internal static functions need to be exported when
/* Certain internal static functions need to be exported when
* compiled into the test frame.
*/
#ifndef SCTP_STATIC
#define SCTP_STATIC static
#endif
/*
* Function declarations.
/*
* Function declarations.
*/
/*
* sctp_protocol.c
* sctp_protocol.c
*/
extern sctp_protocol_t sctp_proto;
extern struct sock *sctp_get_ctl_sock(void);
......@@ -142,7 +142,7 @@ extern int sctp_primitive_ASSOCIATE(sctp_association_t *, void *arg);
extern int sctp_primitive_SHUTDOWN(sctp_association_t *, void *arg);
extern int sctp_primitive_ABORT(sctp_association_t *, void *arg);
extern int sctp_primitive_SEND(sctp_association_t *, void *arg);
extern int sctp_primitive_REQUESTHEARTBEAT(sctp_association_t *, void *arg);
/*
* sctp_crc32c.c
......@@ -418,6 +418,19 @@ static inline size_t get_user_iov_size(struct iovec *iov, int iovlen)
return retval;
}
/* Walk through a list of TLV parameters. Don't trust the
* individual parameter lengths and instead depend on
* the chunk length to indicate when to stop. Make sure
* there is room for a param header too.
*/
#define sctp_walk_params(pos, chunk, member)\
_sctp_walk_params((pos), (chunk), ntohs((chunk)->chunk_hdr.length), member)
#define _sctp_walk_params(pos, chunk, end, member)\
for (pos.v = chunk->member;\
pos.v <= (void *)chunk + end - sizeof(sctp_paramhdr_t) &&\
pos.v <= (void *)chunk + end - WORD_ROUND(ntohs(pos.p->length)); \
pos.v += WORD_ROUND(ntohs(pos.p->length)))
/* Round an int up to the next multiple of 4. */
#define WORD_ROUND(s) (((s)+3)&~3)
......@@ -460,6 +473,26 @@ static inline sctp_protocol_t *sctp_get_protocol(void)
return &sctp_proto;
}
/* Convert from an IP version number to an Address Family symbol. */
static inline int ipver2af(__u8 ipver)
{
int family;
switch (ipver) {
case 4:
family = AF_INET;
break;
case 6:
family = AF_INET6;
break;
default:
family = 0;
break;
};
return family;
}
/* Warning: The following hash functions assume a power of two 'size'. */
/* This is the hash function for the SCTP port hash table. */
static inline int sctp_phashfn(__u16 lport)
......
include/net/sctp/sm.h
View file @ 28b9daad
......@@ -157,6 +157,7 @@ sctp_state_fn_t sctp_sf_shutdown_ack_sent_prm_abort;
sctp_state_fn_t sctp_sf_error_closed;
sctp_state_fn_t sctp_sf_error_shutdown;
sctp_state_fn_t sctp_sf_ignore_primitive;
sctp_state_fn_t sctp_sf_do_prm_requestheartbeat;
/* Prototypes for other event state functions. */
sctp_state_fn_t sctp_sf_do_9_2_start_shutdown;
......@@ -206,9 +207,6 @@ sctp_association_t *sctp_make_temp_asoc(const sctp_endpoint_t *,
sctp_chunk_t *,
const int priority);
__u32 sctp_generate_verification_tag(void);
sctpParam_t sctp_get_my_addrs_raw(const sctp_association_t *,
const int priority, int *addrs_len);
void sctp_populate_tie_tags(__u8 *cookie, __u32 curTag, __u32 hisTag);
/* Prototypes for chunk-building functions. */
......@@ -334,10 +332,10 @@ __u32 sctp_generate_tag(const sctp_endpoint_t *);
__u32 sctp_generate_tsn(const sctp_endpoint_t *);
/* 4th level prototypes */
void sctp_param2sockaddr(sockaddr_storage_t *addr, sctp_addr_param_t *,
void sctp_param2sockaddr(union sctp_addr *addr, sctp_addr_param_t *,
__u16 port);
int sctp_addr2sockaddr(const sctpParam_t, sockaddr_storage_t *);
int sockaddr2sctp_addr(const sockaddr_storage_t *, sctp_addr_param_t *);
int sctp_addr2sockaddr(const union sctp_params, union sctp_addr *);
int sockaddr2sctp_addr(const union sctp_addr *, sctp_addr_param_t *);
/* Extern declarations for major data structures. */
sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t, sctp_state_t);
......
include/net/sctp/structs.h
View file @ 28b9daad
......@@ -2,35 +2,35 @@
* Copyright (c) 1999-2000 Cisco, Inc.
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 International Business Machines Corp.
*
* Copyright (c) 2001-2002 International Business Machines Corp.
*
* This file is part of the SCTP kernel reference Implementation
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* The SCTP reference implementation is distributed in the hope that it
*
* The SCTP reference implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email addresses:
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Written or modified by:
* Randall Stewart <randall@sctp.chicago.il.us>
* Ken Morneau <kmorneau@cisco.com>
* Qiaobing Xie <qxie1@email.mot.com>
......@@ -41,8 +41,8 @@
* Hui Huang <hui.huang@nokia.com>
* Sridhar Samudrala <sri@us.ibm.com>
* Daisy Chang <daisyc@us.ibm.com>
* Dajiang Zhang <dajiang.zhang@nokia.com>
*
* Dajiang Zhang <dajiang.zhang@nokia.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
*/
......@@ -95,11 +95,11 @@ struct sockaddr_storage {
/* A convenience structure for handling sockaddr structures.
* We should wean ourselves off this.
*/
typedef union {
union sctp_addr {
struct sockaddr_in v4;
struct sockaddr_in6 v6;
struct sockaddr sa;
} sockaddr_storage_t;
};
/* Forward declarations for data structures. */
......@@ -246,29 +246,47 @@ typedef struct sctp_func {
int optname,
char *optval,
int *optlen);
struct dst_entry *(*get_dst) (sockaddr_storage_t *daddr,
sockaddr_storage_t *saddr);
int (*cmp_saddr) (struct dst_entry *dst,
sockaddr_storage_t *saddr);
__u16 net_header_len;
struct dst_entry *(*get_dst) (union sctp_addr *daddr,
union sctp_addr *saddr);
void (*copy_addrlist) (struct list_head *,
struct net_device *);
void (*dst_saddr) (union sctp_addr *saddr,
struct dst_entry *dst);
int (*cmp_addr) (const union sctp_addr *addr1,
const union sctp_addr *addr2);
void (*addr_copy) (union sctp_addr *dst,
union sctp_addr *src);
void (*from_skb) (union sctp_addr *,
struct sk_buff *skb,
int saddr);
int (*addr_valid) (union sctp_addr *);
sctp_scope_t (*scope) (union sctp_addr *);
void (*inaddr_any) (union sctp_addr *, unsigned short);
int (*is_any) (const union sctp_addr *);
__u16 net_header_len;
int sockaddr_len;
sa_family_t sa_family;
struct list_head list;
} sctp_func_t;
sctp_func_t *sctp_get_af_specific(const sockaddr_storage_t *address);
sctp_func_t *sctp_get_af_specific(sa_family_t);
/* Protocol family functions. */
typedef struct sctp_pf {
void (*event_msgname)(sctp_ulpevent_t *, char *, int *);
void (*skb_msgname)(struct sk_buff *, char *, int *);
int (*af_supported)(sa_family_t);
int (*cmp_addr) (const union sctp_addr *,
const union sctp_addr *,
struct sctp_opt *);
struct sctp_func *af;
} sctp_pf_t;
/* SCTP Socket type: UDP or TCP style. */
typedef enum {
SCTP_SOCKET_UDP = 0,
SCTP_SOCKET_UDP_HIGH_BANDWIDTH,
SCTP_SOCKET_TCP
SCTP_SOCKET_UDP_HIGH_BANDWIDTH,
SCTP_SOCKET_TCP
} sctp_socket_type_t;
/* Per socket SCTP information. */
......@@ -339,7 +357,7 @@ typedef struct sctp_cookie {
__u32 initial_tsn;
/* This holds the originating address of the INIT packet. */
sockaddr_storage_t peer_addr;
union sctp_addr peer_addr;
/* This is a shim for my peer's INIT packet, followed by
* a copy of the raw address list of the association.
......@@ -359,20 +377,6 @@ typedef struct sctp_signed_cookie {
} sctp_signed_cookie_t;
/* This convenience type allows us to avoid casting when walking
* through a parameter list.
*/
typedef union {
__u8 *v;
sctp_paramhdr_t *p;
sctp_cookie_preserve_param_t *bht;
sctp_hostname_param_t *dns;
sctp_cookie_param_t *cookie;
sctp_supported_addrs_param_t *sat;
sctp_ipv4addr_param_t *v4;
sctp_ipv6addr_param_t *v6;
} sctpParam_t;
/* This is another convenience type to allocate memory for address
* params for the maximum size and pass such structures around
......@@ -383,6 +387,21 @@ typedef union {
sctp_ipv6addr_param_t v6;
} sctp_addr_param_t;
/* A convenience type to allow walking through the various
* parameters and avoid casting all over the place.
*/
union sctp_params {
void *v;
sctp_paramhdr_t *p;
sctp_cookie_preserve_param_t *life;
sctp_hostname_param_t *dns;
sctp_cookie_param_t *cookie;
sctp_supported_addrs_param_t *sat;
sctp_ipv4addr_param_t *v4;
sctp_ipv6addr_param_t *v6;
sctp_addr_param_t *addr;
};
/* RFC 2960. Section 3.3.5 Heartbeat.
* Heartbeat Information: variable length
* The Sender-specific Heartbeat Info field should normally include
......@@ -392,7 +411,7 @@ typedef union {
*/
typedef struct sctp_sender_hb_info {
sctp_paramhdr_t param_hdr;
sockaddr_storage_t daddr;
union sctp_addr daddr;
unsigned long sent_at;
} sctp_sender_hb_info_t __attribute__((packed));
......@@ -433,7 +452,7 @@ struct SCTP_chunk {
*/
/* We point this at the FIRST TLV parameter to chunk_hdr. */
sctpParam_t param_hdr;
union sctp_params param_hdr;
union {
__u8 *v;
sctp_datahdr_t *data_hdr;
......@@ -474,13 +493,13 @@ struct SCTP_chunk {
__u8 ecn_ce_done; /* Have we processed the ECN CE bit? */
__u8 pdiscard; /* Discard the whole packet now? */
__u8 tsn_gap_acked; /* Is this chunk acked by a GAP ACK? */
__u8 fast_retransmit; /* Is this chunk fast retransmitted? */
__u8 fast_retransmit; /* Is this chunk fast retransmitted? */
__u8 tsn_missing_report; /* Data chunk missing counter. */
/* What is the origin IP address for this chunk? */
sockaddr_storage_t source;
union sctp_addr source;
/* Destination address for this chunk. */
sockaddr_storage_t dest;
union sctp_addr dest;
/* For an inbound chunk, this tells us where it came from.
* For an outbound chunk, it tells us where we'd like it to
......@@ -497,8 +516,8 @@ void *sctp_addto_chunk(sctp_chunk_t *chunk, int len, const void *data);
int sctp_user_addto_chunk(sctp_chunk_t *chunk, int len, struct iovec *data);
sctp_chunk_t *sctp_chunkify(struct sk_buff *, const sctp_association_t *,
struct sock *);
void sctp_init_addrs(sctp_chunk_t *chunk);
const sockaddr_storage_t *sctp_source(const sctp_chunk_t *chunk);
void sctp_init_addrs(sctp_chunk_t *, union sctp_addr *, union sctp_addr *);
const union sctp_addr *sctp_source(const sctp_chunk_t *chunk);
/* This is a structure for holding either an IPv6 or an IPv4 address. */
/* sin_family -- AF_INET or AF_INET6
......@@ -507,7 +526,7 @@ const sockaddr_storage_t *sctp_source(const sctp_chunk_t *chunk);
*/
struct sockaddr_storage_list {
struct list_head list;
sockaddr_storage_t a;
union sctp_addr a;
};
typedef sctp_chunk_t *(sctp_packet_phandler_t)(sctp_association_t *);
......@@ -573,7 +592,7 @@ void sctp_packet_free(sctp_packet_t *);
/* This represents a remote transport address.
* For local transport addresses, we just use sockaddr_storage_t.
* For local transport addresses, we just use union sctp_addr.
*
* RFC2960 Section 1.4 Key Terms
*
......@@ -601,7 +620,7 @@ struct SCTP_transport {
int dead;
/* This is the peer's IP address and port. */
sockaddr_storage_t ipaddr;
union sctp_addr ipaddr;
/* These are the functions we call to handle LLP stuff. */
sctp_func_t *af_specific;
......@@ -684,13 +703,15 @@ struct SCTP_transport {
*/
unsigned long last_time_ecne_reduced;
/* state : The current state of this destination,
* : i.e. DOWN, UP, ALLOW-HB, NO-HEARTBEAT, etc.
/* active : The current active state of this destination,
* : i.e. DOWN, UP, etc.
*/
struct {
int active;
int hb_allowed;
} state;
int active;
/* hb_allowed : The current heartbeat state of this destination,
* : i.e. ALLOW-HB, NO-HEARTBEAT, etc.
*/
int hb_allowed;
/* These are the error stats for this destination. */
......@@ -739,11 +760,12 @@ struct SCTP_transport {
int malloced; /* Is this structure kfree()able? */
};
extern sctp_transport_t *sctp_transport_new(const sockaddr_storage_t *, int);
extern sctp_transport_t *sctp_transport_new(const union sctp_addr *, int);
extern sctp_transport_t *sctp_transport_init(sctp_transport_t *,
const sockaddr_storage_t *, int);
const union sctp_addr *, int);
extern void sctp_transport_set_owner(sctp_transport_t *, sctp_association_t *);
extern void sctp_transport_route(sctp_transport_t *, sockaddr_storage_t *);
extern void sctp_transport_route(sctp_transport_t *, union sctp_addr *,
struct sctp_opt *);
extern void sctp_transport_free(sctp_transport_t *);
extern void sctp_transport_destroy(sctp_transport_t *);
extern void sctp_transport_reset_timers(sctp_transport_t *);
......@@ -890,30 +912,31 @@ void sctp_bind_addr_init(sctp_bind_addr_t *, __u16 port);
void sctp_bind_addr_free(sctp_bind_addr_t *);
int sctp_bind_addr_copy(sctp_bind_addr_t *dest, const sctp_bind_addr_t *src,
sctp_scope_t scope, int priority,int flags);
int sctp_add_bind_addr(sctp_bind_addr_t *, sockaddr_storage_t *,
int sctp_add_bind_addr(sctp_bind_addr_t *, union sctp_addr *,
int priority);
int sctp_del_bind_addr(sctp_bind_addr_t *, sockaddr_storage_t *);
int sctp_bind_addr_has_addr(sctp_bind_addr_t *, const sockaddr_storage_t *);
sctpParam_t sctp_bind_addrs_to_raw(const sctp_bind_addr_t *bp,
int *addrs_len,
int priority);
int sctp_del_bind_addr(sctp_bind_addr_t *, union sctp_addr *);
int sctp_bind_addr_match(sctp_bind_addr_t *, const union sctp_addr *,
struct sctp_opt *);
union sctp_params sctp_bind_addrs_to_raw(const sctp_bind_addr_t *bp,
int *addrs_len,
int priority);
int sctp_raw_to_bind_addrs(sctp_bind_addr_t *bp,
__u8 *raw_addr_list,
int addrs_len,
unsigned short port,
int priority);
sctp_scope_t sctp_scope(const sockaddr_storage_t *);
int sctp_in_scope(const sockaddr_storage_t *addr, const sctp_scope_t scope);
int sctp_is_any(const sockaddr_storage_t *addr);
int sctp_addr_is_valid(const sockaddr_storage_t *addr);
sctp_scope_t sctp_scope(const union sctp_addr *);
int sctp_in_scope(const union sctp_addr *addr, const sctp_scope_t scope);
int sctp_is_any(const union sctp_addr *addr);
int sctp_addr_is_valid(const union sctp_addr *addr);
/* What type of sctp_endpoint_common? */
typedef enum {
SCTP_EP_TYPE_SOCKET,
SCTP_EP_TYPE_ASSOCIATION,
} sctp_endpoint_type_t;
} sctp_endpoint_type_t;
/*
* A common base class to bridge the implmentation view of a
......@@ -1048,35 +1071,25 @@ void sctp_endpoint_put(sctp_endpoint_t *);
void sctp_endpoint_hold(sctp_endpoint_t *);
void sctp_endpoint_add_asoc(sctp_endpoint_t *, sctp_association_t *asoc);
sctp_association_t *sctp_endpoint_lookup_assoc(const sctp_endpoint_t *ep,
const sockaddr_storage_t *paddr,
const union sctp_addr *paddr,
sctp_transport_t **);
int sctp_endpoint_is_peeled_off(sctp_endpoint_t *, const union sctp_addr *);
sctp_endpoint_t *sctp_endpoint_is_match(sctp_endpoint_t *,
const sockaddr_storage_t *);
const union sctp_addr *);
int sctp_has_association(const sockaddr_storage_t *laddr,
const sockaddr_storage_t *paddr);
int sctp_has_association(const union sctp_addr *laddr,
const union sctp_addr *paddr);
int sctp_verify_init(const sctp_association_t *asoc,
sctp_cid_t cid,
sctp_init_chunk_t *peer_init,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chunk);
int sctp_verify_param(const sctp_association_t *asoc,
sctpParam_t param,
sctp_cid_t cid,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chunk);
int sctp_process_unk_param(const sctp_association_t *asoc,
sctpParam_t param,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chunk);
void sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
const sockaddr_storage_t *peer_addr,
sctp_init_chunk_t *peer_init, int priority);
int sctp_process_param(sctp_association_t *asoc,
sctpParam_t param,
const sockaddr_storage_t *peer_addr,
sctp_cid_t cid, int priority);
int sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
const union sctp_addr *peer_addr,
sctp_init_chunk_t *peer_init, int priority);
int sctp_process_param(sctp_association_t *asoc, union sctp_params param,
const union sctp_addr *peer_addr, int priority);
__u32 sctp_generate_tag(const sctp_endpoint_t *ep);
__u32 sctp_generate_tsn(const sctp_endpoint_t *ep);
......@@ -1163,10 +1176,10 @@ struct SCTP_association {
sctp_transport_t *primary_path;
/* Cache the primary path address here, when we
* need a an address for msg_name.
* need a an address for msg_name.
*/
sockaddr_storage_t primary_addr;
union sctp_addr primary_addr;
/* active_path
* The path that we are currently using to
* transmit new data and most control chunks.
......@@ -1267,7 +1280,7 @@ struct SCTP_association {
/* Overall : The threshold for this association that if
* Error : the Overall Error Count reaches will cause
* Threshold : this association to be torn down.
* Threshold : this association to be torn down.
*/
int overall_error_threshold;
......@@ -1313,13 +1326,13 @@ struct SCTP_association {
*/
__u32 next_tsn;
/*
/*
* Last Rcvd : This is the last TSN received in sequence. This value
* TSN : is set initially by taking the peer's Initial TSN,
* : received in the INIT or INIT ACK chunk, and
* : subtracting one from it.
*
* Most of RFC 2960 refers to this as the Cumulative TSN Ack Point.
* Most of RFC 2960 refers to this as the Cumulative TSN Ack Point.
*/
__u32 ctsn_ack_point;
......@@ -1543,16 +1556,16 @@ void sctp_association_hold(sctp_association_t *);
sctp_transport_t *sctp_assoc_choose_shutdown_transport(sctp_association_t *);
sctp_transport_t *sctp_assoc_lookup_paddr(const sctp_association_t *,
const sockaddr_storage_t *);
const union sctp_addr *);
sctp_transport_t *sctp_assoc_add_peer(sctp_association_t *,
const sockaddr_storage_t *address,
const union sctp_addr *address,
const int priority);
void sctp_assoc_control_transport(sctp_association_t *, sctp_transport_t *,
sctp_transport_cmd_t, sctp_sn_error_t);
sctp_transport_t *sctp_assoc_lookup_tsn(sctp_association_t *, __u32);
sctp_transport_t *sctp_assoc_is_match(sctp_association_t *,
const sockaddr_storage_t *,
const sockaddr_storage_t *);
const union sctp_addr *,
const union sctp_addr *);
void sctp_assoc_migrate(sctp_association_t *, struct sock *);
void sctp_assoc_update(sctp_association_t *dst, sctp_association_t *src);
......@@ -1560,14 +1573,11 @@ __u32 __sctp_association_get_next_tsn(sctp_association_t *);
__u32 __sctp_association_get_tsn_block(sctp_association_t *, int);
__u16 __sctp_association_get_next_ssn(sctp_association_t *, __u16 sid);
int sctp_cmp_addr(const sockaddr_storage_t *ss1,
const sockaddr_storage_t *ss2);
int sctp_cmp_addr_exact(const sockaddr_storage_t *ss1,
const sockaddr_storage_t *ss2);
int sctp_cmp_addr_exact(const union sctp_addr *ss1,
const union sctp_addr *ss2);
sctp_chunk_t *sctp_get_ecne_prepend(sctp_association_t *asoc);
sctp_chunk_t *sctp_get_no_prepend(sctp_association_t *asoc);
/* A convenience structure to parse out SCTP specific CMSGs. */
typedef struct sctp_cmsgs {
struct sctp_initmsg *init;
......
net/sctp/associola.c
View file @ 28b9daad
/* 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) 2001-2002 International Business Machines Corp.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 La Monte H.P. Yarroll
*
*
* This file is part of the SCTP kernel reference Implementation
*
*
* This module provides the abstraction for an SCTP association.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* The SCTP reference implementation is distributed in the hope that it
*
* The SCTP reference implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Written or modified by:
* La Monte H.P. Yarroll <piggy@acm.org>
* Karl Knutson <karl@athena.chicago.il.us>
* Jon Grimm <jgrimm@us.ibm.com>
......@@ -41,7 +41,7 @@
* Hui Huang <hui.huang@nokia.com>
* Sridhar Samudrala <sri@us.ibm.com>
* Daisy Chang <daisyc@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.
*/
......@@ -92,7 +92,7 @@ sctp_association_t *sctp_association_new(const sctp_endpoint_t *ep,
sctp_association_t *sctp_association_init(sctp_association_t *asoc,
const sctp_endpoint_t *ep,
const struct sock *sk,
sctp_scope_t scope,
sctp_scope_t scope,
int priority)
{
sctp_opt_t *sp;
......@@ -363,48 +363,34 @@ static void sctp_association_destroy(sctp_association_t *asoc)
/* Add a transport address to an association. */
sctp_transport_t *sctp_assoc_add_peer(sctp_association_t *asoc,
const sockaddr_storage_t *addr,
const union sctp_addr *addr,
int priority)
{
sctp_transport_t *peer;
sctp_opt_t *sp;
const __u16 *port;
switch (addr->sa.sa_family) {
case AF_INET:
port = &addr->v4.sin_port;
break;
unsigned short port;
case AF_INET6:
SCTP_V6(
port = &addr->v6.sin6_port;
break;
);
default:
return NULL;
};
/* AF_INET and AF_INET6 share common port field. */
port = addr->v4.sin_port;
/* Set the port if it has not been set yet. */
if (0 == asoc->peer.port) {
asoc->peer.port = *port;
asoc->peer.port = port;
}
SCTP_ASSERT(*port == asoc->peer.port, ":Invalid port\n", return NULL);
/* Check to see if this is a duplicate. */
peer = sctp_assoc_lookup_paddr(asoc, addr);
if (peer)
return peer;
peer = sctp_transport_new(addr, priority);
if (NULL == peer)
if (!peer)
return NULL;
sctp_transport_set_owner(peer, asoc);
/* Cache a route for the transport. */
sctp_transport_route(peer, NULL);
sctp_transport_route(peer, NULL, sctp_sk(asoc->base.sk));
/* If this is the first transport addr on this association,
* initialize the association PMTU to the peer's PMTU.
......@@ -423,7 +409,7 @@ sctp_transport_t *sctp_assoc_add_peer(sctp_association_t *asoc,
asoc->frag_point = asoc->pmtu -
(SCTP_IP_OVERHEAD + sizeof(sctp_data_chunk_t));
/* The asoc->peer.port might not be meaningful as of now, but
/* The asoc->peer.port might not be meaningful yet, but
* initialize the packet structure anyway.
*/
(asoc->outqueue.init_output)(&peer->packet,
......@@ -460,6 +446,9 @@ sctp_transport_t *sctp_assoc_add_peer(sctp_association_t *asoc,
min(asoc->overall_error_threshold + peer->error_threshold,
asoc->max_retrans);
/* By default, enable heartbeat for peer address. */
peer->hb_allowed = 1;
/* Initialize the peer's heartbeat interval based on the
* sock configured value.
*/
......@@ -474,7 +463,7 @@ sctp_transport_t *sctp_assoc_add_peer(sctp_association_t *asoc,
asoc->peer.primary_path = peer;
/* Set a default msg_name for events. */
memcpy(&asoc->peer.primary_addr, &peer->ipaddr,
sizeof(sockaddr_storage_t));
sizeof(union sctp_addr));
asoc->peer.active_path = peer;
asoc->peer.retran_path = peer;
}
......@@ -487,7 +476,7 @@ sctp_transport_t *sctp_assoc_add_peer(sctp_association_t *asoc,
/* Lookup a transport by address. */
sctp_transport_t *sctp_assoc_lookup_paddr(const sctp_association_t *asoc,
const sockaddr_storage_t *address)
const union sctp_addr *address)
{
sctp_transport_t *t;
struct list_head *pos;
......@@ -522,12 +511,12 @@ void sctp_assoc_control_transport(sctp_association_t *asoc,
/* Record the transition on the transport. */
switch (command) {
case SCTP_TRANSPORT_UP:
transport->state.active = 1;
transport->active = 1;
spc_state = ADDRESS_AVAILABLE;
break;
case SCTP_TRANSPORT_DOWN:
transport->state.active = 0;
transport->active = 0;
spc_state = ADDRESS_UNREACHABLE;
break;
......@@ -557,7 +546,7 @@ void sctp_assoc_control_transport(sctp_association_t *asoc,
list_for_each(pos, &asoc->peer.transport_addr_list) {
t = list_entry(pos, sctp_transport_t, transports);
if (!t->state.active)
if (!t->active)
continue;
if (!first || t->last_time_heard > first->last_time_heard) {
second = first;
......@@ -577,7 +566,7 @@ void sctp_assoc_control_transport(sctp_association_t *asoc,
* [If the primary is active but not most recent, bump the most
* recently used transport.]
*/
if (asoc->peer.primary_path->state.active &&
if (asoc->peer.primary_path->active &&
first != asoc->peer.primary_path) {
second = first;
first = asoc->peer.primary_path;
......@@ -645,102 +634,21 @@ __u16 __sctp_association_get_next_ssn(sctp_association_t *asoc, __u16 sid)
return asoc->ssn[sid]++;
}
/* Compare two addresses to see if they match. Wildcard addresses
* always match within their address family.
*
* FIXME: We do not match address scopes correctly.
*/
int sctp_cmp_addr(const sockaddr_storage_t *ss1, const sockaddr_storage_t *ss2)
{
int len;
const void *base1;
const void *base2;
if (ss1->sa.sa_family != ss2->sa.sa_family)
return 0;
if (ss1->v4.sin_port != ss2->v4.sin_port)
return 0;
switch (ss1->sa.sa_family) {
case AF_INET:
if (INADDR_ANY == ss1->v4.sin_addr.s_addr ||
INADDR_ANY == ss2->v4.sin_addr.s_addr)
goto match;
len = sizeof(struct in_addr);
base1 = &ss1->v4.sin_addr;
base2 = &ss2->v4.sin_addr;
break;
case AF_INET6:
SCTP_V6(
if (IPV6_ADDR_ANY ==
sctp_ipv6_addr_type(&ss1->v6.sin6_addr))
goto match;
if (IPV6_ADDR_ANY ==
sctp_ipv6_addr_type(&ss2->v6.sin6_addr))
goto match;
len = sizeof(struct in6_addr);
base1 = &ss1->v6.sin6_addr;
base2 = &ss2->v6.sin6_addr;
break;
)
default:
printk(KERN_WARNING
"WARNING, bogus socket address family %d\n",
ss1->sa.sa_family);
return 0;
};
return (0 == memcmp(base1, base2, len));
match:
return 1;
}
/* Compare two addresses to see if they match. Wildcard addresses
* only match themselves.
*
* FIXME: We do not match address scopes correctly.
*/
int sctp_cmp_addr_exact(const sockaddr_storage_t *ss1,
const sockaddr_storage_t *ss2)
int sctp_cmp_addr_exact(const union sctp_addr *ss1,
const union sctp_addr *ss2)
{
int len;
const void *base1;
const void *base2;
struct sctp_func *af;
if (ss1->sa.sa_family != ss2->sa.sa_family)
return 0;
if (ss1->v4.sin_port != ss2->v4.sin_port)
af = sctp_get_af_specific(ss1->sa.sa_family);
if (!af)
return 0;
switch (ss1->sa.sa_family) {
case AF_INET:
len = sizeof(struct in_addr);
base1 = &ss1->v4.sin_addr;
base2 = &ss2->v4.sin_addr;
break;
case AF_INET6:
SCTP_V6(
len = sizeof(struct in6_addr);
base1 = &ss1->v6.sin6_addr;
base2 = &ss2->v6.sin6_addr;
break;
)
default:
printk(KERN_WARNING
"WARNING, bogus socket address family %d\n",
ss1->sa.sa_family);
return 0;
};
return (0 == memcmp(base1, base2, len));
return af->cmp_addr(ss1, ss2);
}
/* Return an ecne chunk to get prepended to a packet.
......@@ -842,8 +750,8 @@ sctp_transport_t *sctp_assoc_lookup_tsn(sctp_association_t *asoc, __u32 tsn)
/* Is this the association we are looking for? */
sctp_transport_t *sctp_assoc_is_match(sctp_association_t *asoc,
const sockaddr_storage_t *laddr,
const sockaddr_storage_t *paddr)
const union sctp_addr *laddr,
const union sctp_addr *paddr)
{
sctp_transport_t *transport;
......@@ -855,7 +763,8 @@ sctp_transport_t *sctp_assoc_is_match(sctp_association_t *asoc,
if (!transport)
goto out;
if (sctp_bind_addr_has_addr(&asoc->base.bind_addr, laddr))
if (sctp_bind_addr_match(&asoc->base.bind_addr, laddr,
sctp_sk(asoc->base.sk)))
goto out;
}
transport = NULL;
......@@ -898,21 +807,17 @@ static void sctp_assoc_bh_rcv(sctp_association_t *asoc)
error = sctp_do_sm(SCTP_EVENT_T_CHUNK, SCTP_ST_CHUNK(subtype),
state, ep, asoc, chunk, GFP_ATOMIC);
/* Check to see if the association is freed in response to
/* Check to see if the association is freed in response to
* the incoming chunk. If so, get out of the while loop.
*/
if (!sctp_id2assoc(sk, associd))
goto out;
break;
if (error != 0)
goto err_out;
/* If there is an error on chunk, discard this packet. */
if (error && chunk)
chunk->pdiscard = 1;
}
err_out:
/* Is this the right way to pass errors up to the ULP? */
if (error)
sk->err = -error;
out:
}
/* This routine moves an association from its old sk to a new sk. */
......@@ -1017,7 +922,7 @@ sctp_transport_t *sctp_assoc_choose_shutdown_transport(sctp_association_t *asoc)
/* Try to find an active transport. */
if (t->state.active) {
if (t->active) {
break;
} else {
/* Keep track of the next transport in case
......
net/sctp/bind_addr.c
View file @ 28b9daad
/* SCTP kernel reference Implementation
* Copyright (c) Cisco 1999,2000
* Copyright (c) Motorola 1999,2000,2001
* Copyright (c) International Business Machines Corp., 2001
* Copyright (c) International Business Machines Corp., 2001,2002
* Copyright (c) La Monte H.P. Yarroll 2001
*
* This file is part of the SCTP kernel reference implementation.
......@@ -52,7 +52,7 @@
#include <net/sctp/sm.h>
/* Forward declarations for internal helpers. */
static int sctp_copy_one_addr(sctp_bind_addr_t *, sockaddr_storage_t *,
static int sctp_copy_one_addr(sctp_bind_addr_t *, union sctp_addr *,
sctp_scope_t scope, int priority, int flags);
static void sctp_bind_addr_clean(sctp_bind_addr_t *);
......@@ -143,7 +143,7 @@ void sctp_bind_addr_free(sctp_bind_addr_t *bp)
}
/* Add an address to the bind address list in the SCTP_bind_addr structure. */
int sctp_add_bind_addr(sctp_bind_addr_t *bp, sockaddr_storage_t *new,
int sctp_add_bind_addr(sctp_bind_addr_t *bp, union sctp_addr *new,
int priority)
{
struct sockaddr_storage_list *addr;
......@@ -171,7 +171,7 @@ int sctp_add_bind_addr(sctp_bind_addr_t *bp, sockaddr_storage_t *new,
/* Delete an address from the bind address list in the SCTP_bind_addr
* structure.
*/
int sctp_del_bind_addr(sctp_bind_addr_t *bp, sockaddr_storage_t *del_addr)
int sctp_del_bind_addr(sctp_bind_addr_t *bp, union sctp_addr *del_addr)
{
struct list_head *pos, *temp;
struct sockaddr_storage_list *addr;
......@@ -196,18 +196,16 @@ int sctp_del_bind_addr(sctp_bind_addr_t *bp, sockaddr_storage_t *del_addr)
*
* The second argument is the return value for the length.
*/
sctpParam_t sctp_bind_addrs_to_raw(const sctp_bind_addr_t *bp, int *addrs_len,
int priority)
union sctp_params sctp_bind_addrs_to_raw(const sctp_bind_addr_t *bp,
int *addrs_len, int priority)
{
sctpParam_t addrparms;
sctpParam_t retval;
union sctp_params addrparms;
union sctp_params retval;
int addrparms_len;
sctp_addr_param_t rawaddr;
int len;
struct sockaddr_storage_list *addr;
struct list_head *pos;
retval.v = NULL;
addrparms_len = 0;
len = 0;
......@@ -216,11 +214,11 @@ sctpParam_t sctp_bind_addrs_to_raw(const sctp_bind_addr_t *bp, int *addrs_len,
len += sizeof(sctp_addr_param_t);
}
addrparms.v = kmalloc(len, priority);
if (!addrparms.v)
retval.v = kmalloc(len, priority);
if (!retval.v)
goto end_raw;
retval = addrparms;
addrparms = retval;
list_for_each(pos, &bp->address_list) {
addr = list_entry(pos, struct sockaddr_storage_list, list);
......@@ -244,7 +242,7 @@ int sctp_raw_to_bind_addrs(sctp_bind_addr_t *bp, __u8 *raw_addr_list,
{
sctp_addr_param_t *rawaddr;
sctp_paramhdr_t *param;
sockaddr_storage_t addr;
union sctp_addr addr;
int retval = 0;
int len;
......@@ -254,7 +252,7 @@ int sctp_raw_to_bind_addrs(sctp_bind_addr_t *bp, __u8 *raw_addr_list,
rawaddr = (sctp_addr_param_t *)raw_addr_list;
switch (param->type) {
case SCTP_PARAM_IPV4_ADDRESS:
case SCTP_PARAM_IPV4_ADDRESS:
case SCTP_PARAM_IPV6_ADDRESS:
sctp_param2sockaddr(&addr, rawaddr, port);
retval = sctp_add_bind_addr(bp, &addr, priority);
......@@ -284,15 +282,16 @@ int sctp_raw_to_bind_addrs(sctp_bind_addr_t *bp, __u8 *raw_addr_list,
* 2nd Level Abstractions
********************************************************************/
/* Does this contain a specified address? */
int sctp_bind_addr_has_addr(sctp_bind_addr_t *bp, const sockaddr_storage_t *addr)
/* Does this contain a specified address? Allow wildcarding. */
int sctp_bind_addr_match(sctp_bind_addr_t *bp, const union sctp_addr *addr,
struct sctp_opt *opt)
{
struct sockaddr_storage_list *laddr;
struct list_head *pos;
list_for_each(pos, &bp->address_list) {
laddr = list_entry(pos, struct sockaddr_storage_list, list);
if (sctp_cmp_addr(&laddr->a, addr))
if (opt->pf->cmp_addr(&laddr->a, addr, opt))
return 1;
}
......@@ -300,7 +299,7 @@ int sctp_bind_addr_has_addr(sctp_bind_addr_t *bp, const sockaddr_storage_t *addr
}
/* Copy out addresses from the global local address list. */
static int sctp_copy_one_addr(sctp_bind_addr_t *dest, sockaddr_storage_t *addr,
static int sctp_copy_one_addr(sctp_bind_addr_t *dest, union sctp_addr *addr,
sctp_scope_t scope, int priority, int flags)
{
sctp_protocol_t *proto = sctp_get_protocol();
......@@ -325,94 +324,33 @@ static int sctp_copy_one_addr(sctp_bind_addr_t *dest, sockaddr_storage_t *addr,
return error;
}
/* Is addr one of the wildcards? */
int sctp_is_any(const sockaddr_storage_t *addr)
/* Is this a wildcard address? */
int sctp_is_any(const union sctp_addr *addr)
{
int retval = 0;
switch (addr->sa.sa_family) {
case AF_INET:
if (INADDR_ANY == addr->v4.sin_addr.s_addr)
retval = 1;
break;
case AF_INET6:
SCTP_V6(
if (IPV6_ADDR_ANY ==
sctp_ipv6_addr_type(&addr->v6.sin6_addr))
retval = 1;
);
break;
default:
break;
};
return retval;
struct sctp_func *af = sctp_get_af_specific(addr->sa.sa_family);
if (!af)
return 0;
return af->is_any(addr);
}
/* Is 'addr' valid for 'scope'? */
int sctp_in_scope(const sockaddr_storage_t *addr, sctp_scope_t scope)
int sctp_in_scope(const union sctp_addr *addr, sctp_scope_t scope)
{
sctp_scope_t addr_scope = sctp_scope(addr);
switch (addr->sa.sa_family) {
case AF_INET:
/* According to the SCTP IPv4 address scoping document -
* <draft-stewart-tsvwg-sctp-ipv4-00.txt>, the scope has
* a heirarchy of 5 levels:
* Level 0 - unusable SCTP addresses
* Level 1 - loopback address
* Level 2 - link-local addresses
* Level 3 - private addresses.
* Level 4 - global addresses
* For INIT and INIT-ACK address list, let L be the level of
* of requested destination address, sender and receiver
* SHOULD include all of its addresses with level greater
* than or equal to L.
*/
/* The unusable SCTP addresses will not be considered with
* any defined scopes.
*/
if (SCTP_SCOPE_UNUSABLE == addr_scope)
return 0;
/* Note that we are assuming that the scoping are the same
* for both IPv4 addresses and IPv6 addresses, i.e., if the
* scope is link local, both IPv4 link local addresses and
* IPv6 link local addresses would be treated as in the
* scope. There is no filtering for IPv4 vs. IPv6 addresses
* based on scoping alone.
*/
if (addr_scope <= scope)
return 1;
break;
case AF_INET6:
/* FIXME:
* This is almost certainly wrong since scopes have an
* heirarchy. I don't know what RFC to look at.
* There may be some guidance in the SCTP implementors
* guide (an Internet Draft as of October 2001).
*
* Further verification on the correctness of the IPv6
* scoping is needed. According to the IPv6 scoping draft,
* the link local and site local address may require
* further scoping.
*
* Is the heirachy of the IPv6 scoping the same as what's
* defined for IPv4?
* If the same heirarchy indeed applies to both famiies,
* this function can be simplified with one set of code.
* (see the comments for IPv4 above)
*/
if (addr_scope <= scope)
return 1;
break;
default:
/* The unusable SCTP addresses will not be considered with
* any defined scopes.
*/
if (SCTP_SCOPE_UNUSABLE == addr_scope)
return 0;
};
/*
* For INIT and INIT-ACK address list, let L be the level of
* of requested destination address, sender and receiver
* SHOULD include all of its addresses with level greater
* than or equal to L.
*/
if (addr_scope <= scope)
return 1;
return 0;
}
......@@ -422,112 +360,13 @@ int sctp_in_scope(const sockaddr_storage_t *addr, sctp_scope_t scope)
********************************************************************/
/* What is the scope of 'addr'? */
sctp_scope_t sctp_scope(const sockaddr_storage_t *addr)
{
sctp_scope_t retval = SCTP_SCOPE_GLOBAL;
switch (addr->sa.sa_family) {
case AF_INET:
/* We are checking the loopback, private and other address
* scopes as defined in RFC 1918.
* The IPv4 scoping is based on the draft for SCTP IPv4
* scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>.
* The set of SCTP address scope hopefully can cover both
* types of addresses.
*/
/* Should IPv4 scoping be a sysctl configurable option
* so users can turn it off (default on) for certain
* unconventional networking environments?
*/
/* Check for unusable SCTP addresses. */
if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_UNUSABLE;
} else if (LOOPBACK(addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_LOOPBACK;
} else if (IS_IPV4_LINK_ADDRESS(&addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_LINK;
} else if (IS_IPV4_PRIVATE_ADDRESS(&addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_PRIVATE;
} else {
retval = SCTP_SCOPE_GLOBAL;
}
break;
case AF_INET6:
{
SCTP_V6(
int v6scope;
v6scope = ipv6_addr_scope((struct in6_addr *)
&addr->v6.sin6_addr);
/* The IPv6 scope is really a set of bit
* fields. See IFA_* in <net/if_inet6.h>.
* Mapping them to the generic SCTP scope
* set is an attempt to have code
* consistencies with the IPv4 scoping.
*/
switch (v6scope) {
case IFA_HOST:
retval = SCTP_SCOPE_LOOPBACK;
break;
case IFA_LINK:
retval = SCTP_SCOPE_LINK;
break;
case IFA_SITE:
retval = SCTP_SCOPE_PRIVATE;
break;
default:
retval = SCTP_SCOPE_GLOBAL;
break;
};
);
break;
}
default:
retval = SCTP_SCOPE_GLOBAL;
break;
};
return retval;
}
/* This function checks if the address is a valid address to be used for
* SCTP.
*
* Output:
* Return 0 - If the address is a non-unicast or an illegal address.
* Return 1 - If the address is a unicast.
*/
int sctp_addr_is_valid(const sockaddr_storage_t *addr)
sctp_scope_t sctp_scope(const union sctp_addr *addr)
{
unsigned short sa_family = addr->sa.sa_family;
switch (sa_family) {
case AF_INET:
/* Is this a non-unicast address or a unusable SCTP address? */
if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr))
return 0;
break;
struct sctp_func *af;
case AF_INET6:
SCTP_V6(
{
int ret = sctp_ipv6_addr_type(&addr->v6.sin6_addr);
/* Is this a non-unicast address */
if (!(ret & IPV6_ADDR_UNICAST))
return 0;
break;
});
default:
return 0;
};
af = sctp_get_af_specific(addr->sa.sa_family);
if (!af)
return SCTP_SCOPE_UNUSABLE;
return 1;
return af->scope((union sctp_addr *)addr);
}
net/sctp/endpointola.c
View file @ 28b9daad
/* 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) 2001-2002 International Business Machines, Corp.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 Nokia, Inc.
* Copyright (c) 2001 La Monte H.P. Yarroll
......@@ -237,13 +237,14 @@ void sctp_endpoint_put(sctp_endpoint_t *ep)
/* Is this the endpoint we are looking for? */
sctp_endpoint_t *sctp_endpoint_is_match(sctp_endpoint_t *ep,
const sockaddr_storage_t *laddr)
const union sctp_addr *laddr)
{
sctp_endpoint_t *retval;
sctp_read_lock(&ep->base.addr_lock);
if (ep->base.bind_addr.port == laddr->v4.sin_port) {
if (sctp_bind_addr_has_addr(&ep->base.bind_addr, laddr)) {
if (sctp_bind_addr_match(&ep->base.bind_addr, laddr,
sctp_sk(ep->base.sk))) {
retval = ep;
goto out;
}
......@@ -262,7 +263,7 @@ sctp_endpoint_t *sctp_endpoint_is_match(sctp_endpoint_t *ep,
*/
sctp_association_t *__sctp_endpoint_lookup_assoc(
const sctp_endpoint_t *endpoint,
const sockaddr_storage_t *paddr,
const union sctp_addr *paddr,
sctp_transport_t **transport)
{
int rport;
......@@ -289,7 +290,7 @@ sctp_association_t *__sctp_endpoint_lookup_assoc(
/* Lookup association on an endpoint based on a peer address. BH-safe. */
sctp_association_t *sctp_endpoint_lookup_assoc(const sctp_endpoint_t *ep,
const sockaddr_storage_t *paddr,
const union sctp_addr *paddr,
sctp_transport_t **transport)
{
sctp_association_t *asoc;
......@@ -301,6 +302,30 @@ sctp_association_t *sctp_endpoint_lookup_assoc(const sctp_endpoint_t *ep,
return asoc;
}
/* Look for any peeled off association from the endpoint that matches the
* given peer address.
*/
int sctp_endpoint_is_peeled_off(sctp_endpoint_t *ep,
const union sctp_addr *paddr)
{
struct list_head *pos;
struct sockaddr_storage_list *addr;
sctp_bind_addr_t *bp;
sctp_read_lock(&ep->base.addr_lock);
bp = &ep->base.bind_addr;
list_for_each(pos, &bp->address_list) {
addr = list_entry(pos, struct sockaddr_storage_list, list);
if (sctp_has_association(&addr->a, paddr)) {
sctp_read_unlock(&ep->base.addr_lock);
return 1;
}
}
sctp_read_unlock(&ep->base.addr_lock);
return 0;
}
/* Do delayed input processing. This is scheduled by sctp_rcv().
* This may be called on BH or task time.
*/
......@@ -316,13 +341,13 @@ static void sctp_endpoint_bh_rcv(sctp_endpoint_t *ep)
int error = 0;
if (ep->base.dead)
goto out;
return;
asoc = NULL;
inqueue = &ep->base.inqueue;
sk = ep->base.sk;
while (NULL != (chunk = sctp_pop_inqueue(inqueue))) {
while (NULL != (chunk = sctp_pop_inqueue(inqueue))) {
subtype.chunk = chunk->chunk_hdr->type;
/* We might have grown an association since last we
......@@ -350,25 +375,16 @@ static void sctp_endpoint_bh_rcv(sctp_endpoint_t *ep)
if (chunk->transport)
chunk->transport->last_time_heard = jiffies;
/* FIX ME We really would rather NOT have to use
* GFP_ATOMIC.
*/
error = sctp_do_sm(SCTP_EVENT_T_CHUNK, subtype, state,
ep, asoc, chunk, GFP_ATOMIC);
if (error != 0)
goto err_out;
if (error && chunk)
chunk->pdiscard = 1;
/* Check to see if the endpoint is freed in response to
* the incoming chunk. If so, get out of the while loop.
*/
if (!sctp_sk(sk)->ep)
goto out;
break;
}
err_out:
/* Is this the right way to pass errors up to the ULP? */
if (error)
ep->base.sk->err = -error;
out:
}
net/sctp/input.c
View file @ 28b9daad
......@@ -60,64 +60,11 @@
/* Forward declarations for internal helpers. */
static int sctp_rcv_ootb(struct sk_buff *);
sctp_association_t *__sctp_rcv_lookup(struct sk_buff *skb,
const sockaddr_storage_t *laddr,
const sockaddr_storage_t *paddr,
const union sctp_addr *laddr,
const union sctp_addr *paddr,
sctp_transport_t **transportp);
sctp_endpoint_t *__sctp_rcv_lookup_endpoint(const sockaddr_storage_t *laddr);
sctp_endpoint_t *__sctp_rcv_lookup_endpoint(const union sctp_addr *laddr);
/* Initialize a sockaddr_storage from in incoming skb.
* FIXME: This belongs with AF specific sctp_func_t. --jgrimm
*/
static sockaddr_storage_t *sctp_sockaddr_storage_init(sockaddr_storage_t *addr,
const struct sk_buff *skb,
int is_saddr)
{
sockaddr_storage_t *ret = NULL;
void *to, *saddr, *daddr;
__u16 *port;
size_t len;
struct sctphdr *sh;
switch (skb->nh.iph->version) {
case 4:
to = &addr->v4.sin_addr.s_addr;
port = &addr->v4.sin_port;
saddr = &skb->nh.iph->saddr;
daddr = &skb->nh.iph->daddr;
len = sizeof(struct in_addr);
addr->v4.sin_family = AF_INET;
break;
case 6:
SCTP_V6(
to = &addr->v6.sin6_addr;
port = &addr->v6.sin6_port;
saddr = &skb->nh.ipv6h->saddr;
daddr = &skb->nh.ipv6h->daddr;
len = sizeof(struct in6_addr);
addr->v6.sin6_family = AF_INET6;
addr->v6.sin6_flowinfo = 0; /* FIXME */
addr->v6.sin6_scope_id = 0; /* FIXME */
break;
)
default:
goto out;
};
sh = (struct sctphdr *) skb->h.raw;
if (is_saddr) {
*port = ntohs(sh->source);
memcpy(to, saddr, len);
} else {
*port = ntohs(sh->dest);
memcpy(to, daddr, len);
}
ret = addr;
out:
return ret;
}
/* Calculate the SCTP checksum of an SCTP packet. */
static inline int sctp_rcv_checksum(struct sk_buff *skb)
......@@ -147,8 +94,9 @@ int sctp_rcv(struct sk_buff *skb)
sctp_transport_t *transport = NULL;
sctp_chunk_t *chunk;
struct sctphdr *sh;
sockaddr_storage_t src;
sockaddr_storage_t dest;
union sctp_addr src;
union sctp_addr dest;
struct sctp_func *af;
int ret = 0;
if (skb->pkt_type!=PACKET_HOST)
......@@ -163,10 +111,15 @@ int sctp_rcv(struct sk_buff *skb)
if (sctp_rcv_checksum(skb) < 0)
goto bad_packet;
skb_pull(skb, sizeof(struct sctphdr));
skb_pull(skb, sizeof(struct sctphdr));
af = sctp_get_af_specific(ipver2af(skb->nh.iph->version));
if (unlikely(!af))
goto bad_packet;
sctp_sockaddr_storage_init(&src, skb, 1);
sctp_sockaddr_storage_init(&dest, skb, 0);
/* Initialize local addresses for lookups. */
af->from_skb(&src, skb, 1);
af->from_skb(&dest, skb, 0);
/* If the packet is to or from a non-unicast address,
* silently discard the packet.
......@@ -179,7 +132,7 @@ int sctp_rcv(struct sk_buff *skb)
* IP broadcast addresses cannot be used in an SCTP transport
* address."
*/
if (!sctp_addr_is_valid(&src) || !sctp_addr_is_valid(&dest))
if (!af->addr_valid(&src) || !af->addr_valid(&dest))
goto discard_it;
asoc = __sctp_rcv_lookup(skb, &src, &dest, &transport);
......@@ -219,7 +172,7 @@ int sctp_rcv(struct sk_buff *skb)
chunk->sctp_hdr = sh;
/* Set the source and destination addresses of the incoming chunk. */
sctp_init_addrs(chunk);
sctp_init_addrs(chunk, &src, &dest);
/* Remember where we came from. */
chunk->transport = transport;
......@@ -431,7 +384,7 @@ void sctp_unhash_endpoint(sctp_endpoint_t *ep)
}
/* Look up an endpoint. */
sctp_endpoint_t *__sctp_rcv_lookup_endpoint(const sockaddr_storage_t *laddr)
sctp_endpoint_t *__sctp_rcv_lookup_endpoint(const union sctp_addr *laddr)
{
sctp_hashbucket_t *head;
sctp_endpoint_common_t *epb;
......@@ -523,8 +476,8 @@ void __sctp_unhash_established(sctp_association_t *asoc)
}
/* Look up an association. */
sctp_association_t *__sctp_lookup_association(const sockaddr_storage_t *laddr,
const sockaddr_storage_t *paddr,
sctp_association_t *__sctp_lookup_association(const union sctp_addr *laddr,
const union sctp_addr *paddr,
sctp_transport_t **transportp)
{
sctp_hashbucket_t *head;
......@@ -559,8 +512,8 @@ sctp_association_t *__sctp_lookup_association(const sockaddr_storage_t *laddr,
}
/* Look up an association. BH-safe. */
sctp_association_t *sctp_lookup_association(const sockaddr_storage_t *laddr,
const sockaddr_storage_t *paddr,
sctp_association_t *sctp_lookup_association(const union sctp_addr *laddr,
const union sctp_addr *paddr,
sctp_transport_t **transportp)
{
sctp_association_t *asoc;
......@@ -568,13 +521,13 @@ sctp_association_t *sctp_lookup_association(const sockaddr_storage_t *laddr,
sctp_local_bh_disable();
asoc = __sctp_lookup_association(laddr, paddr, transportp);
sctp_local_bh_enable();
return asoc;
}
/* Is there an association matching the given local and peer addresses? */
int sctp_has_association(const sockaddr_storage_t *laddr,
const sockaddr_storage_t *paddr)
int sctp_has_association(const union sctp_addr *laddr,
const union sctp_addr *paddr)
{
sctp_association_t *asoc;
sctp_transport_t *transport;
......@@ -606,21 +559,19 @@ int sctp_has_association(const sockaddr_storage_t *laddr,
* in certain circumstances.
*
*/
static sctp_association_t *__sctp_rcv_initack_lookup(struct sk_buff *skb,
const sockaddr_storage_t *laddr, sctp_transport_t **transportp)
static sctp_association_t *__sctp_rcv_init_lookup(struct sk_buff *skb,
const union sctp_addr *laddr, sctp_transport_t **transportp)
{
sctp_association_t *asoc;
sockaddr_storage_t addr;
sockaddr_storage_t *paddr = &addr;
union sctp_addr addr;
union sctp_addr *paddr = &addr;
struct sctphdr *sh = (struct sctphdr *) skb->h.raw;
sctp_chunkhdr_t *ch;
__u8 *ch_end, *data;
sctp_paramhdr_t *parm;
union sctp_params params;
sctp_init_chunk_t *init;
ch = (sctp_chunkhdr_t *) skb->data;
ch_end = ((__u8 *) ch) + WORD_ROUND(ntohs(ch->length));
/* If this is INIT/INIT-ACK look inside the chunk too. */
switch (ch->type) {
case SCTP_CID_INIT:
......@@ -646,24 +597,17 @@ static sctp_association_t *__sctp_rcv_initack_lookup(struct sk_buff *skb,
/* Find the start of the TLVs and the end of the chunk. This is
* the region we search for address parameters.
*/
data = skb->data + sizeof(sctp_init_chunk_t);
/* See sctp_process_init() for how to go thru TLVs. */
while (data < ch_end) {
parm = (sctp_paramhdr_t *)data;
if (!parm->length)
break;
init = (sctp_init_chunk_t *)skb->data;
data += WORD_ROUND(ntohs(parm->length));
/* Walk the parameters looking for embedded addresses. */
sctp_walk_params(params, init, init_hdr.params) {
/* Note: Ignoring hostname addresses. */
if ((SCTP_PARAM_IPV4_ADDRESS != parm->type) &&
(SCTP_PARAM_IPV6_ADDRESS != parm->type))
if ((SCTP_PARAM_IPV4_ADDRESS != params.p->type) &&
(SCTP_PARAM_IPV6_ADDRESS != params.p->type))
continue;
sctp_param2sockaddr(paddr, (sctp_addr_param_t *)parm,
ntohs(sh->source));
sctp_param2sockaddr(paddr, params.addr, ntohs(sh->source));
asoc = __sctp_lookup_association(laddr, paddr, transportp);
if (asoc)
return asoc;
......@@ -674,20 +618,20 @@ static sctp_association_t *__sctp_rcv_initack_lookup(struct sk_buff *skb,
/* Lookup an association for an inbound skb. */
sctp_association_t *__sctp_rcv_lookup(struct sk_buff *skb,
const sockaddr_storage_t *paddr,
const sockaddr_storage_t *laddr,
const union sctp_addr *paddr,
const union sctp_addr *laddr,
sctp_transport_t **transportp)
{
sctp_association_t *asoc;
asoc = __sctp_lookup_association(laddr, paddr, transportp);
/* Further lookup for INIT-ACK packet.
/* Further lookup for INIT/INIT-ACK packets.
* SCTP Implementors Guide, 2.18 Handling of address
* parameters within the INIT or INIT-ACK.
*/
if (!asoc)
asoc = __sctp_rcv_initack_lookup(skb, laddr, transportp);
asoc = __sctp_rcv_init_lookup(skb, laddr, transportp);
return asoc;
}
......
net/sctp/ipv6.c
View file @ 28b9daad
......@@ -172,16 +172,16 @@ static inline int sctp_v6_xmit(struct sk_buff *skb)
/* Returns the dst cache entry for the given source and destination ip
* addresses.
*/
struct dst_entry *sctp_v6_get_dst(sockaddr_storage_t *daddr,
sockaddr_storage_t *saddr)
struct dst_entry *sctp_v6_get_dst(union sctp_addr *daddr,
union sctp_addr *saddr)
{
struct dst_entry *dst;
struct flowi fl = { .nl_u = { .ip6_u = { .daddr = &daddr->v6.sin6_addr,
} } };
struct flowi fl = {
.nl_u = { .ip6_u = { .daddr = &daddr->v6.sin6_addr, } } };
SCTP_DEBUG_PRINTK("%s: DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
__FUNCTION__, NIP6(fl.fl6_dst));
__FUNCTION__, NIP6(fl.fl6_dst));
if (saddr) {
fl.fl6_src = &saddr->v6.sin6_addr;
......@@ -206,12 +206,147 @@ struct dst_entry *sctp_v6_get_dst(sockaddr_storage_t *daddr,
return dst;
}
/* Check if the dst entry's source addr matches the given source addr. */
int sctp_v6_cmp_saddr(struct dst_entry *dst, sockaddr_storage_t *saddr)
/* Make a copy of all potential local addresses. */
static void sctp_v6_copy_addrlist(struct list_head *addrlist,
struct net_device *dev)
{
struct inet6_dev *in6_dev;
struct inet6_ifaddr *ifp;
struct sockaddr_storage_list *addr;
read_lock(&addrconf_lock);
if ((in6_dev = __in6_dev_get(dev)) == NULL) {
read_unlock(&addrconf_lock);
return;
}
read_lock(&in6_dev->lock);
for (ifp = in6_dev->addr_list; ifp; ifp = ifp->if_next) {
/* Add the address to the local list. */
addr = t_new(struct sockaddr_storage_list, GFP_ATOMIC);
if (addr) {
addr->a.v6.sin6_family = AF_INET6;
addr->a.v6.sin6_port = 0;
addr->a.v6.sin6_addr = ifp->addr;
INIT_LIST_HEAD(&addr->list);
list_add_tail(&addr->list, addrlist);
}
}
read_unlock(&in6_dev->lock);
read_unlock(&addrconf_lock);
}
/* Initialize a sockaddr_storage from in incoming skb. */
static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb,
int is_saddr)
{
void *from;
__u16 *port;
struct sctphdr *sh;
port = &addr->v6.sin6_port;
addr->v6.sin6_family = AF_INET6;
addr->v6.sin6_flowinfo = 0; /* FIXME */
addr->v6.sin6_scope_id = 0; /* FIXME */
sh = (struct sctphdr *) skb->h.raw;
if (is_saddr) {
*port = ntohs(sh->source);
from = &skb->nh.ipv6h->saddr;
} else {
*port = ntohs(sh->dest);
from = &skb->nh.ipv6h->daddr;
}
ipv6_addr_copy(&addr->v6.sin6_addr, from);
}
/* Initialize a sctp_addr from a dst_entry. */
static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst)
{
struct rt6_info *rt = (struct rt6_info *)dst;
addr->sa.sa_family = AF_INET6;
ipv6_addr_copy(&addr->v6.sin6_addr, &rt->rt6i_src.addr);
}
/* Compare addresses exactly. Well.. almost exactly; ignore scope_id
* for now. FIXME.
*/
static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
const union sctp_addr *addr2)
{
int match;
if (addr1->sa.sa_family != addr2->sa.sa_family)
return 0;
match = !ipv6_addr_cmp((struct in6_addr *)&addr1->v6.sin6_addr,
(struct in6_addr *)&addr2->v6.sin6_addr);
return ipv6_addr_cmp(&rt->rt6i_src.addr, &saddr->v6.sin6_addr);
return match;
}
/* Initialize addr struct to INADDR_ANY. */
static void sctp_v6_inaddr_any(union sctp_addr *addr, unsigned short port)
{
memset(addr, 0x00, sizeof(union sctp_addr));
addr->v6.sin6_family = AF_INET6;
addr->v6.sin6_port = port;
}
/* Is this a wildcard address? */
static int sctp_v6_is_any(const union sctp_addr *addr)
{
int type;
type = ipv6_addr_type((struct in6_addr *)&addr->v6.sin6_addr);
return IPV6_ADDR_ANY == type;
}
/* This function checks if the address is a valid address to be used for
* SCTP.
*
* Output:
* 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)
{
int ret = sctp_ipv6_addr_type(&addr->v6.sin6_addr);
/* FIXME: v4-mapped-v6 address support. */
/* Is this a non-unicast address */
if (!(ret & IPV6_ADDR_UNICAST))
return 0;
return 1;
}
/* What is the scope of 'addr'? */
static sctp_scope_t sctp_v6_scope(union sctp_addr *addr)
{
int v6scope;
sctp_scope_t retval;
/* The IPv6 scope is really a set of bit fields.
* See IFA_* in <net/if_inet6.h>. Map to a generic SCTP scope.
*/
v6scope = ipv6_addr_scope(&addr->v6.sin6_addr);
switch (v6scope) {
case IFA_HOST:
retval = SCTP_SCOPE_LOOPBACK;
break;
case IFA_LINK:
retval = SCTP_SCOPE_LINK;
break;
case IFA_SITE:
retval = SCTP_SCOPE_PRIVATE;
break;
default:
retval = SCTP_SCOPE_GLOBAL;
break;
};
return retval;
}
/* Initialize a PF_INET6 socket msg_name. */
......@@ -227,12 +362,13 @@ static void sctp_inet6_msgname(char *msgname, int *addr_len)
}
/* Initialize a PF_INET msgname from a ulpevent. */
static void sctp_inet6_event_msgname(sctp_ulpevent_t *event, char *msgname, int *addrlen)
static void sctp_inet6_event_msgname(sctp_ulpevent_t *event, char *msgname,
int *addrlen)
{
struct sockaddr_in6 *sin6, *sin6from;
if (msgname) {
sockaddr_storage_t *addr;
union sctp_addr *addr;
sctp_inet6_msgname(msgname, addrlen);
sin6 = (struct sockaddr_in6 *)msgname;
......@@ -288,6 +424,49 @@ 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)
{
/* 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:
case AF_INET:
return 1;
default:
return 0;
}
}
/* Address matching with wildcards allowed. This extra level
* of indirection lets us choose whether a PF_INET6 should
* disallow any v4 addresses if we so choose.
*/
static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
const union sctp_addr *addr2,
struct sctp_opt *opt)
{
struct sctp_func *af1, *af2;
af1 = sctp_get_af_specific(addr1->sa.sa_family);
af2 = sctp_get_af_specific(addr2->sa.sa_family);
if (!af1 || !af2)
return 0;
/* Today, wildcard AF_INET/AF_INET6. */
if (sctp_is_any(addr1) || sctp_is_any(addr2))
return 1;
if (addr1->sa.sa_family != addr2->sa.sa_family)
return 0;
return af1->cmp_addr(addr1, addr2);
}
static struct proto_ops inet6_seqpacket_ops = {
.family = PF_INET6,
.release = inet6_release,
......@@ -327,7 +506,14 @@ static sctp_func_t sctp_ipv6_specific = {
.setsockopt = ipv6_setsockopt,
.getsockopt = ipv6_getsockopt,
.get_dst = sctp_v6_get_dst,
.cmp_saddr = sctp_v6_cmp_saddr,
.copy_addrlist = sctp_v6_copy_addrlist,
.from_skb = sctp_v6_from_skb,
.dst_saddr = sctp_v6_dst_saddr,
.cmp_addr = sctp_v6_cmp_addr,
.scope = sctp_v6_scope,
.addr_valid = sctp_v6_addr_valid,
.inaddr_any = sctp_v6_inaddr_any,
.is_any = sctp_v6_is_any,
.net_header_len = sizeof(struct ipv6hdr),
.sockaddr_len = sizeof(struct sockaddr_in6),
.sa_family = AF_INET6,
......@@ -336,6 +522,9 @@ static sctp_func_t sctp_ipv6_specific = {
static sctp_pf_t sctp_pf_inet6_specific = {
.event_msgname = sctp_inet6_event_msgname,
.skb_msgname = sctp_inet6_skb_msgname,
.af_supported = sctp_inet6_af_supported,
.cmp_addr = sctp_inet6_cmp_addr,
.af = &sctp_ipv6_specific,
};
/* Initialize IPv6 support and register with inet6 stack. */
......
net/sctp/output.c
View file @ 28b9daad
......@@ -366,18 +366,13 @@ int sctp_packet_transmit(sctp_packet_t *packet)
*/
sh->checksum = htonl(crc32);
/* FIXME: Delete the rest of this switch statement once phase 2
* of address selection (ipv6 support) drops in.
*/
switch (transport->ipaddr.sa.sa_family) {
case AF_INET:
inet_sk(sk)->daddr = transport->ipaddr.v4.sin_addr.s_addr;
break;
case AF_INET6:
SCTP_V6(inet6_sk(sk)->daddr = transport->ipaddr.v6.sin6_addr;)
break;
default:
/* This is bogus address type, just bail. */
break;
};
/* IP layer ECN support
......@@ -430,10 +425,12 @@ int sctp_packet_transmit(sctp_packet_t *packet)
dst = transport->dst;
if (!dst || dst->obsolete) {
sctp_transport_route(transport, NULL);
sctp_transport_route(transport, NULL, sctp_sk(sk));
}
nskb->dst = dst_clone(transport->dst);
if (!nskb->dst)
goto no_route;
SCTP_DEBUG_PRINTK("***sctp_transmit_packet*** skb length %d\n",
nskb->len);
......@@ -441,6 +438,11 @@ int sctp_packet_transmit(sctp_packet_t *packet)
out:
packet->size = SCTP_IP_OVERHEAD;
return err;
no_route:
kfree_skb(nskb);
IP_INC_STATS_BH(IpOutNoRoutes);
err = -EHOSTUNREACH;
goto out;
}
/********************************************************************
......
net/sctp/outqueue.c
View file @ 28b9daad
......@@ -678,7 +678,7 @@ int sctp_flush_outqueue(sctp_outqueue_t *q, int rtx_timeout)
if (!new_transport) {
new_transport = asoc->peer.active_path;
} else if (!new_transport->state.active) {
} else if (!new_transport->active) {
/* If the chunk is Heartbeat, send it to
* chunk->transport, even it's inactive.
*/
......@@ -835,7 +835,7 @@ int sctp_flush_outqueue(sctp_outqueue_t *q, int rtx_timeout)
*/
new_transport = chunk->transport;
if (new_transport == NULL ||
!new_transport->state.active)
!new_transport->active)
new_transport = asoc->peer.active_path;
/* Change packets if necessary. */
......@@ -1404,7 +1404,7 @@ static void sctp_check_transmitted(sctp_outqueue_t *q,
/* Mark the destination transport address as
* active if it is not so marked.
*/
if (!transport->state.active) {
if (!transport->active) {
sctp_assoc_control_transport(
transport->asoc,
transport,
......
net/sctp/primitive.c
View file @ 28b9daad
......@@ -38,6 +38,7 @@
* La Monte H.P. Yarroll <piggy@acm.org>
* Narasimha Budihal <narasimha@refcode.org>
* Karl Knutson <karl@athena.chicago.il.us>
* Ardelle Fan <ardelle.fan@intel.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
......@@ -181,6 +182,28 @@ DECLARE_PRIMITIVE(ABORT);
DECLARE_PRIMITIVE(SEND);
/* 10.1 ULP-to-SCTP
* J) Request Heartbeat
*
* Format: REQUESTHEARTBEAT(association id, destination transport address)
*
* -> result
*
* Instructs the local endpoint to perform a HeartBeat on the specified
* destination transport address of the given association. The returned
* result should indicate whether the transmission of the HEARTBEAT
* chunk to the destination address is successful.
*
* Mandatory attributes:
*
* o association id - local handle to the SCTP association
*
* o destination transport address - the transport address of the
* asociation on which a heartbeat should be issued.
*/
DECLARE_PRIMITIVE(REQUESTHEARTBEAT);
/* COMMENT BUG. Find out where this is mentioned in the spec. */
int sctp_other_icmp_unreachfrag(sctp_association_t *asoc, void *arg)
{
......
net/sctp/protocol.c
View file @ 28b9daad
/* 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) 2001-2002 International Business Machines, Corp.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 Nokia, Inc.
* Copyright (c) 2001 La Monte H.P. Yarroll
*
*
* This file is part of the SCTP kernel reference Implementation
*
* Initialization/cleanup for SCTP protocol support.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
*
* Initialization/cleanup for SCTP protocol support.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* The SCTP reference implementation is distributed in the hope that it
*
* The SCTP reference implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Written or modified by:
* La Monte H.P. Yarroll <piggy@acm.org>
* Karl Knutson <karl@athena.chicago.il.us>
* Jon Grimm <jgrimm@us.ibm.com>
* Sridhar Samudrala <sri@us.ibm.com>
* Daisy Chang <daisyc@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.
*/
......@@ -103,8 +103,8 @@ void sctp_proc_exit(void)
/* Private helper to extract ipv4 address and stash them in
* the protocol structure.
*/
static inline void sctp_v4_get_local_addr_list(sctp_protocol_t *proto,
struct net_device *dev)
static void sctp_v4_copy_addrlist(struct list_head *addrlist,
struct net_device *dev)
{
struct in_device *in_dev;
struct in_ifaddr *ifa;
......@@ -117,7 +117,6 @@ static inline void sctp_v4_get_local_addr_list(sctp_protocol_t *proto,
}
read_lock(&in_dev->lock);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
/* Add the address to the local list. */
addr = t_new(struct sockaddr_storage_list, GFP_ATOMIC);
......@@ -126,7 +125,7 @@ static inline void sctp_v4_get_local_addr_list(sctp_protocol_t *proto,
addr->a.v4.sin_family = AF_INET;
addr->a.v4.sin_port = 0;
addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
list_add_tail(&addr->list, &proto->local_addr_list);
list_add_tail(&addr->list, addrlist);
}
}
......@@ -134,56 +133,21 @@ static inline void sctp_v4_get_local_addr_list(sctp_protocol_t *proto,
read_unlock(&inetdev_lock);
}
/* Private helper to extract ipv6 address and stash them in
* the protocol structure.
* FIXME: Make this an address family function.
*/
static inline void sctp_v6_get_local_addr_list(sctp_protocol_t *proto,
struct net_device *dev)
{
#ifdef SCTP_V6_SUPPORT
/* FIXME: The testframe doesn't support this function. */
#ifndef TEST_FRAME
struct inet6_dev *in6_dev;
struct inet6_ifaddr *ifp;
struct sockaddr_storage_list *addr;
read_lock(&addrconf_lock);
if ((in6_dev = __in6_dev_get(dev)) == NULL) {
read_unlock(&addrconf_lock);
return;
}
read_lock_bh(&in6_dev->lock);
for (ifp = in6_dev->addr_list; ifp; ifp = ifp->if_next) {
/* Add the address to the local list. */
addr = t_new(struct sockaddr_storage_list, GFP_ATOMIC);
if (addr) {
addr->a.v6.sin6_family = AF_INET6;
addr->a.v6.sin6_port = 0;
addr->a.v6.sin6_addr = ifp->addr;
INIT_LIST_HEAD(&addr->list);
list_add_tail(&addr->list, &proto->local_addr_list);
}
}
read_unlock_bh(&in6_dev->lock);
read_unlock(&addrconf_lock);
#endif /* TEST_FRAME */
#endif /* SCTP_V6_SUPPORT */
}
/* Extract our IP addresses from the system and stash them in the
* protocol structure.
*/
static void __sctp_get_local_addr_list(sctp_protocol_t *proto)
{
struct net_device *dev;
struct list_head *pos;
struct sctp_func *af;
read_lock(&dev_base_lock);
for (dev = dev_base; dev; dev = dev->next) {
sctp_v4_get_local_addr_list(proto, dev);
sctp_v6_get_local_addr_list(proto, dev);
list_for_each(pos, &proto->address_families) {
af = list_entry(pos, sctp_func_t, list);
af->copy_addrlist(&proto->local_addr_list, dev);
}
}
read_unlock(&dev_base_lock);
}
......@@ -259,13 +223,15 @@ int sctp_copy_local_addr_list(sctp_protocol_t *proto, sctp_bind_addr_t *bp,
/* Returns the dst cache entry for the given source and destination ip
* addresses.
*/
struct dst_entry *sctp_v4_get_dst(sockaddr_storage_t *daddr,
sockaddr_storage_t *saddr)
struct dst_entry *sctp_v4_get_dst(union sctp_addr *daddr,
union sctp_addr *saddr)
{
struct rtable *rt;
struct flowi fl = { .nl_u = { .ip4_u = { .daddr =
daddr->v4.sin_addr.s_addr,
} } };
struct flowi fl;
memset(&fl, 0x0, sizeof(struct flowi));
fl.fl4_dst = daddr->v4.sin_addr.s_addr;
fl.proto = IPPROTO_SCTP;
if (saddr)
fl.fl4_src = saddr->v4.sin_addr.s_addr;
......@@ -285,12 +251,118 @@ struct dst_entry *sctp_v4_get_dst(sockaddr_storage_t *daddr,
return &rt->u.dst;
}
/* Check if the dst entry's source addr matches the given source addr. */
int sctp_v4_cmp_saddr(struct dst_entry *dst, sockaddr_storage_t *saddr)
/* Initialize a sctp_addr from in incoming skb. */
static void sctp_v4_from_skb(union sctp_addr *addr, struct sk_buff *skb,
int is_saddr)
{
void *from;
__u16 *port;
struct sctphdr *sh;
port = &addr->v4.sin_port;
addr->v4.sin_family = AF_INET;
sh = (struct sctphdr *) skb->h.raw;
if (is_saddr) {
*port = ntohs(sh->source);
from = &skb->nh.iph->saddr;
} else {
*port = ntohs(sh->dest);
from = &skb->nh.iph->daddr;
}
memcpy(&addr->v4.sin_addr.s_addr, from, sizeof(struct in_addr));
}
/* Initialize a sctp_addr from a dst_entry. */
static void sctp_v4_dst_saddr(union sctp_addr *saddr, struct dst_entry *dst)
{
struct rtable *rt = (struct rtable *)dst;
saddr->v4.sin_family = AF_INET;
saddr->v4.sin_addr.s_addr = rt->rt_src;
}
/* Compare two addresses exactly. */
static int sctp_v4_cmp_addr(const union sctp_addr *addr1,
const union sctp_addr *addr2)
{
if (addr1->sa.sa_family != addr2->sa.sa_family)
return 0;
if (addr1->v4.sin_port != addr2->v4.sin_port)
return 0;
if (addr1->v4.sin_addr.s_addr != addr2->v4.sin_addr.s_addr)
return 0;
return 1;
}
return (rt->rt_src == saddr->v4.sin_addr.s_addr);
/* Initialize addr struct to INADDR_ANY. */
static void sctp_v4_inaddr_any(union sctp_addr *addr, unsigned short port)
{
addr->v4.sin_family = AF_INET;
addr->v4.sin_addr.s_addr = INADDR_ANY;
addr->v4.sin_port = port;
}
/* Is this a wildcard address? */
static int sctp_v4_is_any(const union sctp_addr *addr)
{
return INADDR_ANY == addr->v4.sin_addr.s_addr;
}
/* This function checks if the address is a valid address to be used for
* SCTP.
*
* Output:
* 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)
{
/* Is this a non-unicast address or a unusable SCTP address? */
if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr))
return 0;
return 1;
}
/* Checking the loopback, private and other address scopes as defined in
* RFC 1918. The IPv4 scoping is based on the draft for SCTP IPv4
* scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>.
*
* Level 0 - unusable SCTP addresses
* Level 1 - loopback address
* Level 2 - link-local addresses
* Level 3 - private addresses.
* Level 4 - global addresses
* For INIT and INIT-ACK address list, let L be the level of
* of requested destination address, sender and receiver
* SHOULD include all of its addresses with level greater
* than or equal to L.
*/
static sctp_scope_t sctp_v4_scope(union sctp_addr *addr)
{
sctp_scope_t retval;
/* Should IPv4 scoping be a sysctl configurable option
* so users can turn it off (default on) for certain
* unconventional networking environments?
*/
/* Check for unusable SCTP addresses. */
if (IS_IPV4_UNUSABLE_ADDRESS(&addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_UNUSABLE;
} else if (LOOPBACK(addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_LOOPBACK;
} else if (IS_IPV4_LINK_ADDRESS(&addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_LINK;
} else if (IS_IPV4_PRIVATE_ADDRESS(&addr->v4.sin_addr.s_addr)) {
retval = SCTP_SCOPE_PRIVATE;
} else {
retval = SCTP_SCOPE_GLOBAL;
}
return retval;
}
/* Event handler for inet device events.
......@@ -336,11 +408,11 @@ int sctp_ctl_sock_init(void)
/* Get the table of functions for manipulating a particular address
* family.
*/
sctp_func_t *sctp_get_af_specific(const sockaddr_storage_t *address)
sctp_func_t *sctp_get_af_specific(sa_family_t family)
{
struct list_head *pos;
sctp_protocol_t *proto = sctp_get_protocol();
sctp_func_t *retval, *af;
struct sctp_func *retval, *af;
retval = NULL;
......@@ -349,7 +421,7 @@ sctp_func_t *sctp_get_af_specific(const sockaddr_storage_t *address)
*/
list_for_each(pos, &proto->address_families) {
af = list_entry(pos, sctp_func_t, list);
if (address->sa.sa_family == af->sa_family) {
if (family == af->sa_family) {
retval = af;
break;
}
......@@ -362,15 +434,16 @@ sctp_func_t *sctp_get_af_specific(const sockaddr_storage_t *address)
static void sctp_inet_msgname(char *msgname, int *addr_len)
{
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)msgname;
*addr_len = sizeof(struct sockaddr_in);
sin->sin_family = AF_INET;
memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
}
/* Copy the primary address of the peer primary address as the msg_name. */
static void sctp_inet_event_msgname(sctp_ulpevent_t *event, char *msgname, int *addr_len)
static void sctp_inet_event_msgname(sctp_ulpevent_t *event, char *msgname,
int *addr_len)
{
struct sockaddr_in *sin, *sinfrom;
......@@ -381,26 +454,56 @@ static void sctp_inet_event_msgname(sctp_ulpevent_t *event, char *msgname, int *
sin->sin_port = htons(event->asoc->peer.port);
sin->sin_addr.s_addr = sinfrom->sin_addr.s_addr;
}
}
}
/* Initialize and copy out a msgname from an inbound skb. */
static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *addr_len)
static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *len)
{
struct sctphdr *sh;
struct sctphdr *sh;
struct sockaddr_in *sin;
if (msgname) {
sctp_inet_msgname(msgname, addr_len);
sctp_inet_msgname(msgname, len);
sin = (struct sockaddr_in *)msgname;
sh = (struct sctphdr *)skb->h.raw;
sin->sin_port = sh->source;
sin->sin_addr.s_addr = skb->nh.iph->saddr;
}
}
}
/* Do we support this AF? */
static int sctp_inet_af_supported(sa_family_t family)
{
/* PF_INET only supports AF_INET addresses. */
return (AF_INET == family);
}
/* Address matching with wildcards allowed. */
static int sctp_inet_cmp_addr(const union sctp_addr *addr1,
const union sctp_addr *addr2,
struct sctp_opt *opt)
{
/* PF_INET only supports AF_INET addresses. */
if (addr1->sa.sa_family != addr2->sa.sa_family)
return 0;
if (INADDR_ANY == addr1->v4.sin_addr.s_addr ||
INADDR_ANY == addr2->v4.sin_addr.s_addr)
return 1;
if (addr1->v4.sin_addr.s_addr == addr2->v4.sin_addr.s_addr)
return 1;
return 0;
}
struct sctp_func sctp_ipv4_specific;
static sctp_pf_t sctp_pf_inet = {
.event_msgname = sctp_inet_event_msgname,
.skb_msgname = sctp_inet_skb_msgname,
.skb_msgname = sctp_inet_skb_msgname,
.af_supported = sctp_inet_af_supported,
.cmp_addr = sctp_inet_cmp_addr,
.af = &sctp_ipv4_specific,
};
......@@ -448,12 +551,19 @@ static struct inet_protocol sctp_protocol = {
};
/* IPv4 address related functions. */
sctp_func_t sctp_ipv4_specific = {
struct sctp_func sctp_ipv4_specific = {
.queue_xmit = ip_queue_xmit,
.setsockopt = ip_setsockopt,
.getsockopt = ip_getsockopt,
.get_dst = sctp_v4_get_dst,
.cmp_saddr = sctp_v4_cmp_saddr,
.copy_addrlist = sctp_v4_copy_addrlist,
.from_skb = sctp_v4_from_skb,
.dst_saddr = sctp_v4_dst_saddr,
.cmp_addr = sctp_v4_cmp_addr,
.addr_valid = sctp_v4_addr_valid,
.inaddr_any = sctp_v4_inaddr_any,
.is_any = sctp_v4_is_any,
.scope = sctp_v4_scope,
.net_header_len = sizeof(struct iphdr),
.sockaddr_len = sizeof(struct sockaddr_in),
.sa_family = AF_INET,
......
net/sctp/sm_make_chunk.c
View file @ 28b9daad
/* SCTP kernel reference Implementation
* Copyright (c) 1999-2000 Cisco, Inc.
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 International Business Machines Corp.
* Copyright (c) 2001-2002 Intel Corp.
* Copyright (c) 2001-2002 International Business Machines Corp.
*
* This file is part of the SCTP kernel reference Implementation
*
......@@ -166,7 +166,7 @@ sctp_chunk_t *sctp_make_init(const sctp_association_t *asoc,
int priority)
{
sctp_inithdr_t init;
sctpParam_t addrs;
union sctp_params addrs;
size_t chunksize;
sctp_chunk_t *retval = NULL;
int addrs_len = 0;
......@@ -228,7 +228,7 @@ sctp_chunk_t *sctp_make_init_ack(const sctp_association_t *asoc,
{
sctp_inithdr_t initack;
sctp_chunk_t *retval;
sctpParam_t addrs;
union sctp_params addrs;
int addrs_len;
sctp_cookie_param_t *cookie;
int cookie_len;
......@@ -1031,51 +1031,15 @@ sctp_chunk_t *sctp_chunkify(struct sk_buff *skb, const sctp_association_t *asoc,
}
/* Set chunk->source and dest based on the IP header in chunk->skb. */
void sctp_init_addrs(sctp_chunk_t *chunk)
void sctp_init_addrs(sctp_chunk_t *chunk, union sctp_addr *src,
union sctp_addr *dest)
{
sockaddr_storage_t *source, *dest;
struct sk_buff *skb;
struct sctphdr *sh;
struct iphdr *ih4;
struct ipv6hdr *ih6;
source = &chunk->source;
dest = &chunk->dest;
skb = chunk->skb;
ih4 = skb->nh.iph;
ih6 = skb->nh.ipv6h;
sh = chunk->sctp_hdr;
switch (ih4->version) {
case 4:
source->v4.sin_family = AF_INET;
source->v4.sin_port = ntohs(sh->source);
source->v4.sin_addr.s_addr = ih4->saddr;
dest->v4.sin_family = AF_INET;
dest->v4.sin_port = ntohs(sh->dest);
dest->v4.sin_addr.s_addr = ih4->daddr;
break;
case 6:
SCTP_V6(
source->v6.sin6_family = AF_INET6;
source->v6.sin6_port = ntohs(sh->source);
source->v6.sin6_addr = ih6->saddr;
dest->v6.sin6_family = AF_INET6;
dest->v6.sin6_port = ntohs(sh->dest);
dest->v6.sin6_addr = ih6->daddr;
/* FIXME: What do we do with scope, etc. ? */
break;
)
default:
/* This is a bogus address type, just bail. */
break;
};
memcpy(&chunk->source, src, sizeof(union sctp_addr));
memcpy(&chunk->dest, dest, sizeof(union sctp_addr));
}
/* Extract the source address from a chunk. */
const sockaddr_storage_t *sctp_source(const sctp_chunk_t *chunk)
const union sctp_addr *sctp_source(const sctp_chunk_t *chunk)
{
/* If we have a known transport, use that. */
if (chunk->transport) {
......@@ -1482,78 +1446,28 @@ sctp_association_t *sctp_unpack_cookie(const sctp_endpoint_t *ep,
* 3rd Level Abstractions
********************************************************************/
/* Verify the INIT packet before we process it. */
int sctp_verify_init(const sctp_association_t *asoc,
sctp_cid_t cid,
sctp_init_chunk_t *peer_init,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chk_p)
{
sctpParam_t param;
uint8_t *end;
/* FIXME - Verify the fixed fields of the INIT chunk. Also, verify
* the mandatory parameters somewhere here and generate either the
* "Missing mandatory parameter" error or the "Invalid mandatory
* parameter" error. */
/* Find unrecognized parameters. */
end = ((uint8_t *)peer_init + ntohs(peer_init->chunk_hdr.length));
for (param.v = peer_init->init_hdr.params;
param.v < end;
param.v += WORD_ROUND(ntohs(param.p->length))) {
if (!sctp_verify_param(asoc, param, cid, chunk, err_chk_p))
return 0;
} /* for (loop through all parameters) */
return 1;
}
/* Find unrecognized parameters in the chunk.
* Return values:
* 0 - discard the chunk
* 1 - continue with the chunk
/* Do not attempt to handle the HOST_NAME parm. However, do
* send back an indicator to the peer.
*/
int sctp_verify_param(const sctp_association_t *asoc,
sctpParam_t param,
sctp_cid_t cid,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chk_p)
static int sctp_process_hn_param(const sctp_association_t *asoc,
union sctp_params param,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chk_p)
{
int retval = 1;
__u16 len = ntohs(param.p->length);
/* FIXME - This routine is not looking at each parameter per the
* chunk type, i.e., unrecognized parameters should be further
* identified based on the chunk id.
/* Make an ERROR chunk, preparing enough room for
* returning multiple unknown parameters.
*/
if (!*err_chk_p)
*err_chk_p = sctp_make_op_error_space(asoc, chunk, len);
switch (param.p->type) {
case SCTP_PARAM_IPV4_ADDRESS:
case SCTP_PARAM_IPV6_ADDRESS:
case SCTP_PARAM_COOKIE_PRESERVATIVE:
/* FIXME - If we don't support the host name parameter, we should
* generate an error for this - Unresolvable address.
*/
case SCTP_PARAM_HOST_NAME_ADDRESS:
case SCTP_PARAM_SUPPORTED_ADDRESS_TYPES:
case SCTP_PARAM_STATE_COOKIE:
case SCTP_PARAM_HEARTBEAT_INFO:
case SCTP_PARAM_UNRECOGNIZED_PARAMETERS:
case SCTP_PARAM_ECN_CAPABLE:
break;
default:
SCTP_DEBUG_PRINTK("Unrecognized param: %d for chunk %d.\n",
ntohs(param.p->type), cid);
return sctp_process_unk_param(asoc, param, chunk, err_chk_p);
if (*err_chk_p)
sctp_init_cause(*err_chk_p, SCTP_ERROR_DNS_FAILED,
param.v, len);
break;
}
return retval;
/* Stop processing this chunk. */
return 0;
}
/* RFC 3.2.1 & the Implementers Guide 2.2.
......@@ -1582,10 +1496,10 @@ int sctp_verify_param(const sctp_association_t *asoc,
* 0 - discard the chunk
* 1 - continue with the chunk
*/
int sctp_process_unk_param(const sctp_association_t *asoc,
sctpParam_t param,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chk_p)
static int sctp_process_unk_param(const sctp_association_t *asoc,
union sctp_params param,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chk_p)
{
int retval = 1;
......@@ -1604,7 +1518,7 @@ int sctp_process_unk_param(const sctp_association_t *asoc,
if (*err_chk_p)
sctp_init_cause(*err_chk_p, SCTP_ERROR_UNKNOWN_PARAM,
(const void *)param.p,
param.v,
WORD_ROUND(ntohs(param.p->length)));
break;
......@@ -1620,7 +1534,7 @@ int sctp_process_unk_param(const sctp_association_t *asoc,
if (*err_chk_p) {
sctp_init_cause(*err_chk_p, SCTP_ERROR_UNKNOWN_PARAM,
(const void *)param.p,
param.v,
WORD_ROUND(ntohs(param.p->length)));
} else {
/* If there is no memory for generating the ERROR
......@@ -1638,17 +1552,84 @@ int sctp_process_unk_param(const sctp_association_t *asoc,
return retval;
}
/* Unpack the parameters in an INIT packet.
* FIXME: There is no return status to allow callers to do
* error handling.
/* Find unrecognized parameters in the chunk.
* Return values:
* 0 - discard the chunk
* 1 - continue with the chunk
*/
void sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
const sockaddr_storage_t *peer_addr,
sctp_init_chunk_t *peer_init,
int priority)
static int sctp_verify_param(const sctp_association_t *asoc,
union sctp_params param,
sctp_cid_t cid,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chunk)
{
sctpParam_t param;
__u8 *end;
int retval = 1;
/* FIXME - This routine is not looking at each parameter per the
* chunk type, i.e., unrecognized parameters should be further
* identified based on the chunk id.
*/
switch (param.p->type) {
case SCTP_PARAM_IPV4_ADDRESS:
case SCTP_PARAM_IPV6_ADDRESS:
case SCTP_PARAM_COOKIE_PRESERVATIVE:
case SCTP_PARAM_SUPPORTED_ADDRESS_TYPES:
case SCTP_PARAM_STATE_COOKIE:
case SCTP_PARAM_HEARTBEAT_INFO:
case SCTP_PARAM_UNRECOGNIZED_PARAMETERS:
case SCTP_PARAM_ECN_CAPABLE:
break;
case SCTP_PARAM_HOST_NAME_ADDRESS:
/* Tell the peer, we won't support this param. */
return sctp_process_hn_param(asoc, param, chunk, err_chunk);
default:
SCTP_DEBUG_PRINTK("Unrecognized param: %d for chunk %d.\n",
ntohs(param.p->type), cid);
return sctp_process_unk_param(asoc, param, chunk, err_chunk);
break;
}
return retval;
}
/* Verify the INIT packet before we process it. */
int sctp_verify_init(const sctp_association_t *asoc,
sctp_cid_t cid,
sctp_init_chunk_t *peer_init,
sctp_chunk_t *chunk,
sctp_chunk_t **err_chk_p)
{
union sctp_params param;
/* FIXME - Verify the fixed fields of the INIT chunk. Also, verify
* the mandatory parameters somewhere here and generate either the
* "Missing mandatory parameter" error or the "Invalid mandatory
* parameter" error.
*/
/* Find unrecognized parameters. */
sctp_walk_params(param, peer_init, init_hdr.params) {
if (!sctp_verify_param(asoc, param, cid, chunk, err_chk_p))
return 0;
} /* for (loop through all parameters) */
return 1;
}
/* Unpack the parameters in an INIT packet into an association.
* Returns 0 on failure, else success.
*/
int sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
const union sctp_addr *peer_addr,
sctp_init_chunk_t *peer_init,
int priority)
{
union sctp_params param;
sctp_transport_t *transport;
struct list_head *pos, *temp;
char *cookie;
......@@ -1664,15 +1645,14 @@ void sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
* be a a better choice than any of the embedded addresses.
*/
if (peer_addr)
sctp_assoc_add_peer(asoc, peer_addr, priority);
if(!sctp_assoc_add_peer(asoc, peer_addr, priority))
goto nomem;
/* Process the initialization parameters. */
end = ((__u8 *)peer_init + ntohs(peer_init->chunk_hdr.length));
for (param.v = peer_init->init_hdr.params;
param.v < end;
param.v += WORD_ROUND(ntohs(param.p->length))) {
if (!sctp_process_param(asoc, param, peer_addr, cid,
priority))
sctp_walk_params(param, peer_init, init_hdr.params) {
if (!sctp_process_param(asoc, param, peer_addr, priority))
goto clean_up;
}
......@@ -1738,7 +1718,7 @@ void sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
* association to the same value as the Initial TSN.
*/
asoc->peer.addip_serial = asoc->peer.i.initial_tsn - 1;
return;
return 1;
clean_up:
/* Release the transport structures. */
......@@ -1747,8 +1727,11 @@ void sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
list_del(pos);
sctp_transport_free(transport);
}
nomem:
return 0;
}
/* Update asoc with the option described in param.
*
* RFC2960 3.3.2.1 Optional/Variable Length Parameters in INIT
......@@ -1760,14 +1743,12 @@ void sctp_process_init(sctp_association_t *asoc, sctp_cid_t cid,
* work we do. In particular, we should not build transport
* structures for the addresses.
*/
int sctp_process_param(sctp_association_t *asoc, sctpParam_t param,
const sockaddr_storage_t *peer_addr,
sctp_cid_t cid, int priority)
int sctp_process_param(sctp_association_t *asoc, union sctp_params param,
const union sctp_addr *peer_addr, int priority)
{
sockaddr_storage_t addr;
sctp_addr_param_t *addrparm;
int j;
union sctp_addr addr;
int i;
__u16 sat;
int retval = 1;
sctp_scope_t scope;
......@@ -1776,30 +1757,21 @@ int sctp_process_param(sctp_association_t *asoc, sctpParam_t param,
* came from a fresh INIT, and INIT ACK, or were stored in a cookie.
*/
switch (param.p->type) {
case SCTP_PARAM_IPV6_ADDRESS:
if( PF_INET6 != asoc->base.sk->family)
break;
/* Fall through. */
case SCTP_PARAM_IPV4_ADDRESS:
addrparm = (sctp_addr_param_t *)param.v;
sctp_param2sockaddr(&addr, addrparm, asoc->peer.port);
sctp_param2sockaddr(&addr, param.addr, asoc->peer.port);
scope = sctp_scope(peer_addr);
if (sctp_in_scope(&addr, scope))
sctp_assoc_add_peer(asoc, &addr, priority);
break;
case SCTP_PARAM_IPV6_ADDRESS:
/* Rethink this as we may need to keep for
* restart considerations.
*/
if (PF_INET6 == asoc->base.sk->family) {
addrparm = (sctp_addr_param_t *)param.v;
sctp_param2sockaddr(&addr, addrparm, asoc->peer.port);
scope = sctp_scope(peer_addr);
if (sctp_in_scope(&addr, scope))
sctp_assoc_add_peer(asoc, &addr, priority);
}
if (!sctp_assoc_add_peer(asoc, &addr, priority))
return 0;
break;
case SCTP_PARAM_COOKIE_PRESERVATIVE:
asoc->cookie_preserve =
ntohl(param.bht->lifespan_increment);
ntohl(param.life->lifespan_increment);
break;
case SCTP_PARAM_HOST_NAME_ADDRESS:
......@@ -1813,10 +1785,12 @@ int sctp_process_param(sctp_association_t *asoc, sctpParam_t param,
asoc->peer.ipv4_address = 0;
asoc->peer.ipv6_address = 0;
j = (ntohs(param.p->length) -
sizeof(sctp_paramhdr_t)) /
sizeof(__u16);
for (i = 0; i < j; ++i) {
/* Cycle through address types; avoid divide by 0. */
sat = ntohs(param.p->length) - sizeof(sctp_paramhdr_t);
if (sat)
sat /= sizeof(__u16);
for (i = 0; i < sat; ++i) {
switch (param.sat->types[i]) {
case SCTP_PARAM_IPV4_ADDRESS:
asoc->peer.ipv4_address = 1;
......@@ -1843,13 +1817,11 @@ int sctp_process_param(sctp_association_t *asoc, sctpParam_t param,
break;
case SCTP_PARAM_HEARTBEAT_INFO:
SCTP_DEBUG_PRINTK("unimplemented "
"SCTP_PARAM_HEARTBEAT_INFO\n");
/* Would be odd to receive, but it causes no problems. */
break;
case SCTP_PARAM_UNRECOGNIZED_PARAMETERS:
SCTP_DEBUG_PRINTK("unimplemented "
"SCTP_PARAM_UNRECOGNIZED_PARAMETERS\n");
/* Rejected during verify stage. */
break;
case SCTP_PARAM_ECN_CAPABLE:
......@@ -1898,8 +1870,8 @@ __u32 sctp_generate_tsn(const sctp_endpoint_t *ep)
* 4th Level Abstractions
********************************************************************/
/* Convert from an SCTP IP parameter to a sockaddr_storage_t. */
void sctp_param2sockaddr(sockaddr_storage_t *addr, sctp_addr_param_t *param,
/* Convert from an SCTP IP parameter to a union sctp_addr. */
void sctp_param2sockaddr(union sctp_addr *addr, sctp_addr_param_t *param,
__u16 port)
{
switch(param->v4.param_hdr.type) {
......@@ -1926,11 +1898,8 @@ void sctp_param2sockaddr(sockaddr_storage_t *addr, sctp_addr_param_t *param,
/* Convert an IP address in an SCTP param into a sockaddr_in. */
/* Returns true if a valid conversion was possible. */
int sctp_addr2sockaddr(sctpParam_t p, sockaddr_storage_t *sa)
int sctp_addr2sockaddr(union sctp_params p, union sctp_addr *sa)
{
if (!p.v)
return 0;
switch (p.p->type) {
case SCTP_PARAM_IPV4_ADDRESS:
sa->v4.sin_addr = *((struct in_addr *)&p.v4->addr);
......@@ -1950,30 +1919,10 @@ int sctp_addr2sockaddr(sctpParam_t p, sockaddr_storage_t *sa)
return 1;
}
/* Convert from an IP version number to an Address Family symbol. */
int ipver2af(__u8 ipver)
{
int family;
switch (ipver) {
case 4:
family = AF_INET;
break;
case 6:
family = AF_INET6;
break;
default:
family = 0;
break;
};
return family;
}
/* Convert a sockaddr_in to an IP address in an SCTP param.
* Returns len if a valid conversion was possible.
* Returns len if a valid conversion was possible.
*/
int sockaddr2sctp_addr(const sockaddr_storage_t *sa, sctp_addr_param_t *p)
int sockaddr2sctp_addr(const union sctp_addr *sa, sctp_addr_param_t *p)
{
int len = 0;
......
net/sctp/sm_sideeffect.c
View file @ 28b9daad
......@@ -41,6 +41,7 @@
* Dajiang Zhang <dajiang.zhang@nokia.com>
* Daisy Chang <daisyc@us.ibm.com>
* Sridhar Samudrala <sri@us.ibm.com>
* Ardelle Fan <ardelle.fan@intel.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
......@@ -68,11 +69,13 @@ static void sctp_do_8_2_transport_strike(sctp_association_t *asoc,
static void sctp_cmd_init_failed(sctp_cmd_seq_t *, sctp_association_t *asoc);
static void sctp_cmd_assoc_failed(sctp_cmd_seq_t *, sctp_association_t *asoc,
sctp_event_t event_type, sctp_chunk_t *chunk);
static void sctp_cmd_process_init(sctp_cmd_seq_t *, sctp_association_t *asoc,
sctp_chunk_t *chunk,
sctp_init_chunk_t *peer_init,
int priority);
static int sctp_cmd_process_init(sctp_cmd_seq_t *, sctp_association_t *asoc,
sctp_chunk_t *chunk,
sctp_init_chunk_t *peer_init,
int priority);
static void sctp_cmd_hb_timers_start(sctp_cmd_seq_t *, sctp_association_t *);
static void sctp_cmd_hb_timers_update(sctp_cmd_seq_t *, sctp_association_t *,
sctp_transport_t *);
static void sctp_cmd_set_bind_addrs(sctp_cmd_seq_t *, sctp_association_t *,
sctp_bind_addr_t *);
static void sctp_cmd_transport_reset(sctp_cmd_seq_t *, sctp_association_t *,
......@@ -83,6 +86,8 @@ static int sctp_cmd_process_sack(sctp_cmd_seq_t *, sctp_association_t *,
sctp_sackhdr_t *);
static void sctp_cmd_setup_t2(sctp_cmd_seq_t *, sctp_association_t *,
sctp_chunk_t *);
static void sctp_cmd_new_state(sctp_cmd_seq_t *, sctp_association_t *,
sctp_state_t);
/* These three macros allow us to pull the debugging code out of the
* main flow of sctp_do_sm() to keep attention focused on the real
......@@ -193,6 +198,7 @@ int sctp_side_effects(sctp_event_t event_type, sctp_subtype_t subtype,
/* BUG--we should now recover some memory, probably by
* reneging...
*/
error = -ENOMEM;
break;
case SCTP_DISPOSITION_DELETE_TCB:
......@@ -301,8 +307,7 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
case SCTP_CMD_NEW_STATE:
/* Enter a new state. */
asoc->state = command->obj.state;
asoc->state_timestamp = jiffies;
sctp_cmd_new_state(commands, asoc, command->obj.state);
break;
case SCTP_CMD_REPORT_TSN:
......@@ -339,9 +344,14 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
break;
case SCTP_CMD_PEER_INIT:
/* Process a unified INIT from the peer. */
sctp_cmd_process_init(commands, asoc, chunk,
command->obj.ptr, priority);
/* Process a unified INIT from the peer.
* Note: Only used during INIT-ACK processing. If
* there is an error just return to the outter
* layer which will bail.
*/
error = sctp_cmd_process_init(commands, asoc, chunk,
command->obj.ptr,
priority);
break;
case SCTP_CMD_GEN_COOKIE_ECHO:
......@@ -561,6 +571,11 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
sctp_cmd_hb_timers_start(commands, asoc);
break;
case SCTP_CMD_HB_TIMERS_UPDATE:
t = command->obj.transport;
sctp_cmd_hb_timers_update(commands, asoc, t);
break;
case SCTP_CMD_REPORT_ERROR:
error = command->obj.error;
break;
......@@ -581,11 +596,18 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
chunk->pdiscard = 1;
break;
case SCTP_CMD_RTO_PENDING:
t = command->obj.transport;
t->rto_pending = 1;
break;
default:
printk(KERN_WARNING "Impossible command: %u, %p\n",
command->verb, command->obj.ptr);
break;
};
if (error)
return error;
}
return error;
......@@ -648,7 +670,7 @@ static sctp_chunk_t *sctp_do_ecn_ecne_work(sctp_association_t *asoc,
}
/* Always try to quiet the other end. In case of lost CWR,
* resend last_cwr_tsn.
* resend last_cwr_tsn.
*/
repl = sctp_make_cwr(asoc, asoc->last_cwr_tsn, chunk);
......@@ -978,7 +1000,7 @@ static void sctp_do_8_2_transport_strike(sctp_association_t *asoc,
*/
asoc->overall_error_count++;
if (transport->state.active &&
if (transport->active &&
(transport->error_count++ >= transport->error_threshold)) {
SCTP_DEBUG_PRINTK("transport_strike: transport "
"IP:%d.%d.%d.%d failed.\n",
......@@ -1058,22 +1080,32 @@ static void sctp_cmd_assoc_failed(sctp_cmd_seq_t *commands,
}
/* Process an init chunk (may be real INIT/INIT-ACK or an embedded INIT
* inside the cookie.
* inside the cookie. In reality, this is only used for INIT-ACK processing
* since all other cases use "temporary" associations and can do all
* their work in statefuns directly.
*/
static void sctp_cmd_process_init(sctp_cmd_seq_t *commands,
sctp_association_t *asoc,
sctp_chunk_t *chunk,
sctp_init_chunk_t *peer_init,
int priority)
static int sctp_cmd_process_init(sctp_cmd_seq_t *commands,
sctp_association_t *asoc,
sctp_chunk_t *chunk,
sctp_init_chunk_t *peer_init,
int priority)
{
/* The command sequence holds commands assuming that the
* processing will happen successfully. If this is not the
* case, rewind the sequence and add appropriate error handling
* to the sequence.
int error;
/* We only process the init as a sideeffect in a single
* case. This is when we process the INIT-ACK. If we
* fail during INIT processing (due to malloc problems),
* just return the error and stop processing the stack.
*/
sctp_process_init(asoc, chunk->chunk_hdr->type,
sctp_source(chunk), peer_init,
priority);
if (!sctp_process_init(asoc, chunk->chunk_hdr->type,
sctp_source(chunk), peer_init,
priority))
error = -ENOMEM;
else
error = 0;
return error;
}
/* Helper function to break out starting up of heartbeat timers. */
......@@ -1096,6 +1128,16 @@ static void sctp_cmd_hb_timers_start(sctp_cmd_seq_t *cmds,
}
}
/* Helper function to update the heartbeat timer. */
static void sctp_cmd_hb_timers_update(sctp_cmd_seq_t *cmds,
sctp_association_t *asoc,
sctp_transport_t *t)
{
/* Update the heartbeat timer. */
if (!mod_timer(&t->hb_timer, t->hb_interval + t->rto + jiffies))
sctp_transport_hold(t);
}
/* Helper function to break out SCTP_CMD_SET_BIND_ADDR handling. */
void sctp_cmd_set_bind_addrs(sctp_cmd_seq_t *cmds, sctp_association_t *asoc,
sctp_bind_addr_t *bp)
......@@ -1131,7 +1173,7 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds,
/* Mark the destination transport address as active if it is not so
* marked.
*/
if (!t->state.active)
if (!t->active)
sctp_assoc_control_transport(asoc, t, SCTP_TRANSPORT_UP,
SCTP_HEARTBEAT_SUCCESS);
......@@ -1154,10 +1196,6 @@ static void sctp_cmd_transport_reset(sctp_cmd_seq_t *cmds,
/* Mark one strike against a transport. */
sctp_do_8_2_transport_strike(asoc, t);
/* Update the heartbeat timer. */
if (!mod_timer(&t->hb_timer, t->hb_interval + t->rto + jiffies))
sctp_transport_hold(t);
}
/* Helper function to process the process SACK command. */
......@@ -1196,3 +1234,18 @@ static void sctp_cmd_setup_t2(sctp_cmd_seq_t *cmds, sctp_association_t *asoc,
asoc->timeouts[SCTP_EVENT_TIMEOUT_T2_SHUTDOWN] = t->rto;
chunk->transport = t;
}
/* Helper function to change the state of an association. */
static void sctp_cmd_new_state(sctp_cmd_seq_t *cmds, sctp_association_t *asoc,
sctp_state_t state)
{
asoc->state = state;
asoc->state_timestamp = jiffies;
/* Wake up any process waiting for the association to
* get established.
*/
if ((SCTP_STATE_ESTABLISHED == asoc->state) &&
(waitqueue_active(&asoc->wait)))
wake_up_interruptible(&asoc->wait);
}
net/sctp/sm_statefuns.c
View file @ 28b9daad
......@@ -236,20 +236,18 @@ sctp_disposition_t sctp_sf_do_5_1B_init(const sctp_endpoint_t *ep,
chunk->subh.init_hdr = (sctp_inithdr_t *)chunk->skb->data;
/* Tag the variable length parameters. */
chunk->param_hdr.v =
skb_pull(chunk->skb, sizeof(sctp_inithdr_t));
chunk->param_hdr.v = skb_pull(chunk->skb, sizeof(sctp_inithdr_t));
new_asoc = sctp_make_temp_asoc(ep, chunk, GFP_ATOMIC);
if (!new_asoc)
goto nomem;
/* FIXME: sctp_process_init can fail, but there is no
* status nor handling.
*/
sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk),
(sctp_init_chunk_t *)chunk->chunk_hdr,
GFP_ATOMIC);
/* The call, sctp_process_init(), can fail on memory allocation. */
if (!sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk),
(sctp_init_chunk_t *)chunk->chunk_hdr,
GFP_ATOMIC))
goto nomem_init;
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC, SCTP_ASOC(new_asoc));
......@@ -302,10 +300,10 @@ sctp_disposition_t sctp_sf_do_5_1B_init(const sctp_endpoint_t *ep,
return SCTP_DISPOSITION_DELETE_TCB;
nomem_ack:
sctp_association_free(new_asoc);
if (err_chunk)
sctp_free_chunk(err_chunk);
nomem_init:
sctp_association_free(new_asoc);
nomem:
return SCTP_DISPOSITION_NOMEM;
}
......@@ -563,9 +561,11 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(const sctp_endpoint_t *ep,
* effects--it is safe to run them here.
*/
peer_init = &chunk->subh.cookie_hdr->c.peer_init[0];
sctp_process_init(new_asoc, chunk->chunk_hdr->type,
&chunk->subh.cookie_hdr->c.peer_addr, peer_init,
GFP_ATOMIC);
if (!sctp_process_init(new_asoc, chunk->chunk_hdr->type,
&chunk->subh.cookie_hdr->c.peer_addr,
peer_init, GFP_ATOMIC))
goto nomem_init;
repl = sctp_make_cookie_ack(new_asoc, chunk);
if (!repl)
......@@ -592,10 +592,9 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(const sctp_endpoint_t *ep,
nomem_ev:
sctp_free_chunk(repl);
nomem_repl:
nomem_init:
sctp_association_free(new_asoc);
nomem:
return SCTP_DISPOSITION_NOMEM;
}
......@@ -664,6 +663,39 @@ sctp_disposition_t sctp_sf_do_5_1E_ca(const sctp_endpoint_t *ep,
return SCTP_DISPOSITION_NOMEM;
}
/* Generate and sendout a heartbeat packet. */
sctp_disposition_t sctp_sf_heartbeat(const sctp_endpoint_t *ep,
const sctp_association_t *asoc,
const sctp_subtype_t type,
void *arg,
sctp_cmd_seq_t *commands)
{
sctp_transport_t *transport = (sctp_transport_t *) arg;
sctp_chunk_t *reply;
sctp_sender_hb_info_t hbinfo;
size_t paylen = 0;
hbinfo.param_hdr.type = SCTP_PARAM_HEARTBEAT_INFO;
hbinfo.param_hdr.length = htons(sizeof(sctp_sender_hb_info_t));
hbinfo.daddr = transport->ipaddr;
hbinfo.sent_at = jiffies;
/* Send a heartbeat to our peer. */
paylen = sizeof(sctp_sender_hb_info_t);
reply = sctp_make_heartbeat(asoc, transport, &hbinfo, paylen);
if (!reply)
return SCTP_DISPOSITION_NOMEM;
/* Set rto_pending indicating that an RTT measurement
* is started with this heartbeat chunk.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_RTO_PENDING,
SCTP_TRANSPORT(transport));
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(reply));
return SCTP_DISPOSITION_CONSUME;
}
/* Generate a HEARTBEAT packet on the given transport. */
sctp_disposition_t sctp_sf_sendbeat_8_3(const sctp_endpoint_t *ep,
const sctp_association_t *asoc,
......@@ -672,9 +704,6 @@ sctp_disposition_t sctp_sf_sendbeat_8_3(const sctp_endpoint_t *ep,
sctp_cmd_seq_t *commands)
{
sctp_transport_t *transport = (sctp_transport_t *) arg;
sctp_chunk_t *reply;
sctp_sender_hb_info_t hbinfo;
size_t paylen = 0;
if (asoc->overall_error_count >= asoc->overall_error_threshold) {
/* CMD_ASSOC_FAILED calls CMD_DELETE_TCB. */
......@@ -689,34 +718,21 @@ sctp_disposition_t sctp_sf_sendbeat_8_3(const sctp_endpoint_t *ep,
* HEARTBEAT is sent (see Section 8.3).
*/
hbinfo.param_hdr.type = SCTP_PARAM_HEARTBEAT_INFO;
hbinfo.param_hdr.length = htons(sizeof(sctp_sender_hb_info_t));
hbinfo.daddr = transport->ipaddr;
hbinfo.sent_at = jiffies;
/* Set rto_pending indicating that an RTT measurement is started
* with this heartbeat chunk.
*/
transport->rto_pending = 1;
/* Send a heartbeat to our peer. */
paylen = sizeof(sctp_sender_hb_info_t);
reply = sctp_make_heartbeat(asoc, transport, &hbinfo, paylen);
if (!reply)
goto nomem;
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(reply));
/* Set transport error counter and association error counter
* when sending heartbeat.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_TRANSPORT_RESET,
if (transport->hb_allowed) {
if (SCTP_DISPOSITION_NOMEM ==
sctp_sf_heartbeat(ep, asoc, type, arg,
commands))
return SCTP_DISPOSITION_NOMEM;
/* Set transport error counter and association error counter
* when sending heartbeat.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_TRANSPORT_RESET,
SCTP_TRANSPORT(transport));
}
sctp_add_cmd_sf(commands, SCTP_CMD_HB_TIMERS_UPDATE,
SCTP_TRANSPORT(transport));
return SCTP_DISPOSITION_CONSUME;
nomem:
return SCTP_DISPOSITION_NOMEM;
}
/*
......@@ -817,7 +833,7 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const sctp_endpoint_t *ep,
sctp_cmd_seq_t *commands)
{
sctp_chunk_t *chunk = arg;
sockaddr_storage_t from_addr;
union sctp_addr from_addr;
sctp_transport_t *link;
sctp_sender_hb_info_t *hbinfo;
unsigned long max_interval;
......@@ -866,7 +882,7 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const sctp_endpoint_t *ep,
/* Helper function to send out an abort for the restart
* condition.
*/
static int sctp_sf_send_restart_abort(sockaddr_storage_t *ssa,
static int sctp_sf_send_restart_abort(union sctp_addr *ssa,
sctp_chunk_t *init,
sctp_cmd_seq_t *commands)
{
......@@ -1125,8 +1141,13 @@ static sctp_disposition_t sctp_sf_do_unexpected_init(
* Verification Tag and Peers Verification tag into a reserved
* place (local tie-tag and per tie-tag) within the state cookie.
*/
sctp_process_init(new_asoc, chunk->chunk_hdr->type, sctp_source(chunk),
(sctp_init_chunk_t *)chunk->chunk_hdr, GFP_ATOMIC);
if (!sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk),
(sctp_init_chunk_t *)chunk->chunk_hdr,
GFP_ATOMIC)) {
retval = SCTP_DISPOSITION_NOMEM;
goto nomem_init;
}
/* Make sure no new addresses are being added during the
* restart. Do not do this check for COOKIE-WAIT state,
......@@ -1197,6 +1218,7 @@ static sctp_disposition_t sctp_sf_do_unexpected_init(
nomem:
retval = SCTP_DISPOSITION_NOMEM;
goto cleanup;
nomem_init:
cleanup_asoc:
sctp_association_free(new_asoc);
goto cleanup;
......@@ -1326,15 +1348,16 @@ static sctp_disposition_t sctp_sf_do_dupcook_a(const sctp_endpoint_t *ep,
* side effects--it is safe to run them here.
*/
peer_init = &chunk->subh.cookie_hdr->c.peer_init[0];
sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk), peer_init, GFP_ATOMIC);
if (!sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk), peer_init, GFP_ATOMIC))
goto nomem;
/* Make sure no new addresses are being added during the
* restart. Though this is a pretty complicated attack
* since you'd have to get inside the cookie.
*/
if (!sctp_sf_check_restart_addrs(new_asoc, asoc, chunk, commands)) {
printk("cookie echo check\n");
return SCTP_DISPOSITION_CONSUME;
}
......@@ -1391,8 +1414,9 @@ static sctp_disposition_t sctp_sf_do_dupcook_b(const sctp_endpoint_t *ep,
* side effects--it is safe to run them here.
*/
peer_init = &chunk->subh.cookie_hdr->c.peer_init[0];
sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk), peer_init, GFP_ATOMIC);
if (!sctp_process_init(new_asoc, chunk->chunk_hdr->type,
sctp_source(chunk), peer_init, GFP_ATOMIC))
goto nomem;
/* Update the content of current association. */
sctp_add_cmd_sf(commands, SCTP_CMD_UPDATE_ASSOC, SCTP_ASOC(new_asoc));
......@@ -3656,6 +3680,39 @@ sctp_disposition_t sctp_sf_shutdown_ack_sent_prm_abort(
return sctp_sf_shutdown_sent_prm_abort(ep, asoc, type, arg, commands);
}
/*
* Process the REQUESTHEARTBEAT primitive
*
* 10.1 ULP-to-SCTP
* J) Request Heartbeat
*
* Format: REQUESTHEARTBEAT(association id, destination transport address)
*
* -> result
*
* Instructs the local endpoint to perform a HeartBeat on the specified
* destination transport address of the given association. The returned
* result should indicate whether the transmission of the HEARTBEAT
* chunk to the destination address is successful.
*
* Mandatory attributes:
*
* o association id - local handle to the SCTP association
*
* o destination transport address - the transport address of the
* asociation on which a heartbeat should be issued.
*/
sctp_disposition_t sctp_sf_do_prm_requestheartbeat(
const sctp_endpoint_t *ep,
const sctp_association_t *asoc,
const sctp_subtype_t type,
void *arg,
sctp_cmd_seq_t *commands)
{
return sctp_sf_heartbeat(ep, asoc, type, (sctp_transport_t *)arg,
commands);
}
/*
* Ignore the primitive event
*
......@@ -4257,7 +4314,8 @@ sctp_packet_t *sctp_ootb_pkt_new(const sctp_association_t *asoc,
/* Cache a route for the transport with the chunk's destination as
* the source address.
*/
sctp_transport_route(transport, (sockaddr_storage_t *)&chunk->dest);
sctp_transport_route(transport, (union sctp_addr *)&chunk->dest,
sctp_sk(sctp_get_ctl_sock()));
packet = sctp_packet_init(packet, transport, sport, dport);
packet = sctp_packet_config(packet, vtag, 0, NULL);
......
net/sctp/sm_statetable.c
View file @ 28b9daad
......@@ -39,6 +39,7 @@
* Jon Grimm <jgrimm@us.ibm.com>
* Hui Huang <hui.huang@nokia.com>
* Daisy Chang <daisyc@us.ibm.com>
* Ardelle Fan <ardelle.fan@intel.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
......@@ -706,21 +707,28 @@ chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
/* SCTP_STATE_EMPTY */ \
{.fn = sctp_sf_bug, .name = "sctp_sf_bug"}, \
/* SCTP_STATE_CLOSED */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_bug, .name = "sctp_sf_bug"}, \
/* SCTP_STATE_COOKIE_WAIT */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
/* SCTP_STATE_COOKIE_ECHOED */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
/* SCTP_STATE_ESTABLISHED */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
/* SCTP_STATE_SHUTDOWN_PENDING */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
/* SCTP_STATE_SHUTDOWN_SENT */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
{.fn = sctp_sf_not_impl, .name = "sctp_sf_not_impl"}, \
{.fn = sctp_sf_do_prm_requestheartbeat, \
.name = "sctp_sf_do_prm_requestheartbeat"}, \
} /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
#define TYPE_SCTP_PRIMITIVE_GETSRTTREPORT { \
......
net/sctp/socket.c
View file @ 28b9daad
......@@ -86,15 +86,16 @@ static void sctp_wfree(struct sk_buff *skb);
static int sctp_wait_for_sndbuf(sctp_association_t *asoc, long *timeo_p,
int msg_len);
static int sctp_wait_for_packet(struct sock * sk, int *err, long *timeo_p);
static int sctp_wait_for_connect(sctp_association_t *asoc, long *timeo_p);
static inline void sctp_sk_addr_set(struct sock *,
const sockaddr_storage_t *newaddr,
sockaddr_storage_t *saveaddr);
const union sctp_addr *newaddr,
union sctp_addr *saveaddr);
static inline void sctp_sk_addr_restore(struct sock *,
const sockaddr_storage_t *);
static inline int sctp_sendmsg_verify_name(struct sock *, struct msghdr *);
const union sctp_addr *);
static inline int sctp_verify_addr(struct sock *, struct sockaddr *, int);
static int sctp_bindx_add(struct sock *, struct sockaddr_storage *, int);
static int sctp_bindx_rem(struct sock *, struct sockaddr_storage *, int);
static int sctp_do_bind(struct sock *, sockaddr_storage_t *, int);
static int sctp_do_bind(struct sock *, union sctp_addr *, int);
static int sctp_autobind(struct sock *sk);
......@@ -122,7 +123,7 @@ int sctp_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
/* Disallow binding twice. */
if (!sctp_sk(sk)->ep->base.bind_addr.port)
retval = sctp_do_bind(sk, (sockaddr_storage_t *)uaddr,
retval = sctp_do_bind(sk, (union sctp_addr *)uaddr,
addr_len);
else
retval = -EINVAL;
......@@ -135,14 +136,14 @@ int sctp_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
static long sctp_get_port_local(struct sock *, unsigned short);
/* Bind a local address either to an endpoint or to an association. */
SCTP_STATIC int sctp_do_bind(struct sock *sk, sockaddr_storage_t *newaddr,
SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *newaddr,
int addr_len)
{
sctp_opt_t *sp = sctp_sk(sk);
sctp_endpoint_t *ep = sp->ep;
sctp_bind_addr_t *bp = &ep->base.bind_addr;
unsigned short sa_family = newaddr->sa.sa_family;
sockaddr_storage_t tmpaddr, saveaddr;
union sctp_addr tmpaddr, saveaddr;
unsigned short *snum;
int ret = 0;
......@@ -403,7 +404,7 @@ int sctp_bindx_add(struct sock *sk, struct sockaddr_storage *addrs, int addrcnt)
goto err_bindx_add;
};
retval = sctp_do_bind(sk, (sockaddr_storage_t *)&addrs[cnt],
retval = sctp_do_bind(sk, (union sctp_addr *)&addrs[cnt],
addr_len);
err_bindx_add:
......@@ -481,7 +482,7 @@ int sctp_bindx_rem(struct sock *sk, struct sockaddr_storage *addrs, int addrcnt)
int cnt;
sctp_bind_addr_t *bp = &ep->base.bind_addr;
int retval = 0;
sockaddr_storage_t saveaddr;
union sctp_addr saveaddr;
SCTP_DEBUG_PRINTK("sctp_bindx_rem (sk: %p, addrs: %p, addrcnt: %d)\n",
sk, addrs, addrcnt);
......@@ -500,7 +501,7 @@ int sctp_bindx_rem(struct sock *sk, struct sockaddr_storage *addrs, int addrcnt)
*/
switch (((struct sockaddr *)&addrs[cnt])->sa_family) {
case AF_INET:
saveaddr = *((sockaddr_storage_t *)
saveaddr = *((union sctp_addr *)
&addrs[cnt]);
saveaddr.v4.sin_port = ntohs(saveaddr.v4.sin_port);
/* Verify the port. */
......@@ -511,7 +512,7 @@ int sctp_bindx_rem(struct sock *sk, struct sockaddr_storage *addrs, int addrcnt)
break;
case AF_INET6:
saveaddr = *((sockaddr_storage_t *)
saveaddr = *((union sctp_addr *)
&addrs[cnt]);
saveaddr.v6.sin6_port =
ntohs(saveaddr.v6.sin6_port);
......@@ -741,7 +742,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
sctp_association_t *new_asoc=NULL, *asoc=NULL;
sctp_transport_t *transport;
sctp_chunk_t *chunk = NULL;
sockaddr_storage_t to;
union sctp_addr to;
struct sockaddr *msg_name = NULL;
struct sctp_sndrcvinfo default_sinfo = { 0 };
struct sctp_sndrcvinfo *sinfo;
......@@ -777,7 +778,8 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
* For a peeled-off socket, msg_name is ignored.
*/
if ((SCTP_SOCKET_UDP_HIGH_BANDWIDTH != sp->type) && msg->msg_name) {
err = sctp_sendmsg_verify_name(sk, msg);
err = sctp_verify_addr(sk, (struct sockaddr *)msg->msg_name,
msg->msg_namelen);
if (err)
return err;
......@@ -826,28 +828,14 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
/* Look for a matching association on the endpoint. */
asoc = sctp_endpoint_lookup_assoc(ep, &to, &transport);
if (!asoc) {
struct list_head *pos;
struct sockaddr_storage_list *addr;
sctp_bind_addr_t *bp = &ep->base.bind_addr;
sctp_read_lock(&ep->base.addr_lock);
/* If we could not find a matching association on
* the endpoint, make sure that there is no peeled-
* off association.
*/
list_for_each(pos, &bp->address_list) {
addr = list_entry(pos,
struct sockaddr_storage_list,
list);
if (sctp_has_association(&addr->a, &to)) {
err = -EINVAL;
sctp_read_unlock(&ep->base.addr_lock);
goto out_unlock;
}
/* If we could not find a matching association on the
* endpoint, make sure that there is no peeled-off
* association on another socket.
*/
if (sctp_endpoint_is_peeled_off(ep, &to)) {
err = -EADDRNOTAVAIL;
goto out_unlock;
}
sctp_read_unlock(&ep->base.addr_lock);
}
} else {
/* For a peeled-off socket, ignore any associd specified by
......@@ -1116,6 +1104,33 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
#endif /* 0 */
}
/* This is an extended version of skb_pull() that removes the data from the
* start of a skb even when data is spread across the list of skb's in the
* frag_list. len specifies the total amount of data that needs to be removed.
* when 'len' bytes could be removed from the skb, it returns 0.
* If 'len' exceeds the total skb length, it returns the no. of bytes that
* could not be removed.
*/
static int sctp_skb_pull(struct sk_buff *skb, int len)
{
struct sk_buff *list;
if (len <= skb->len) {
__skb_pull(skb, len);
return 0;
}
len -= skb->len;
__skb_pull(skb, skb->len);
for (list = skb_shinfo(skb)->frag_list; list; list = list->next) {
len = sctp_skb_pull(list, len);
if (!len)
return 0;
}
return len;
}
/* API 3.1.3 recvmsg() - UDP Style Syntax
*
* ssize_t recvmsg(int socket, struct msghdr *message,
......@@ -1138,9 +1153,10 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr
{
sctp_ulpevent_t *event = NULL;
sctp_opt_t *sp = sctp_sk(sk);
struct sk_buff *skb;
struct sk_buff *skb, *list;
int copied;
int err = 0;
int skb_len;
SCTP_DEBUG_PRINTK("sctp_recvmsg("
"%s: %p, %s: %p, %s: %d, %s: %d, %s: "
......@@ -1157,21 +1173,16 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr
if (!skb)
goto out;
copied = skb->len;
/* Get the total length of the skb including any skb's in the
* frag_list.
*/
skb_len = skb->len;
for (list = skb_shinfo(skb)->frag_list; list; list = list->next)
skb_len += list->len;
if (skb_shinfo(skb)->frag_list) {
struct sk_buff *list;
for (list = skb_shinfo(skb)->frag_list;
list;
list = list->next)
copied += list->len;
}
if (copied > len) {
copied = skb_len;
if (copied > len)
copied = len;
msg->msg_flags |= MSG_TRUNC;
}
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
......@@ -1199,8 +1210,19 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr
err = copied;
/* FIXME: We need to support MSG_EOR correctly. */
msg->msg_flags |= MSG_EOR;
/* If skb's length exceeds the user's buffer, update the skb and
* push it back to the receive_queue so that the next call to
* recvmsg() will return the remaining data. Don't set MSG_EOR.
* Otherwise, set MSG_EOR indicating the end of a message.
*/
if (skb_len > copied) {
sctp_skb_pull(skb, copied);
skb_queue_head(&sk->receive_queue, skb);
msg->msg_flags &= ~MSG_EOR;
goto out;
} else {
msg->msg_flags |= MSG_EOR;
}
out_free:
sctp_ulpevent_free(event); /* Free the skb. */
......@@ -1252,6 +1274,67 @@ static inline int sctp_setsockopt_autoclose(struct sock *sk, char *optval,
return 0;
}
static inline int sctp_setsockopt_set_peer_addr_params(struct sock *sk,
char *optval,
int optlen)
{
struct sctp_paddrparams params;
sctp_association_t *asoc;
union sctp_addr *addr;
sctp_transport_t *trans;
int error;
if (optlen != sizeof(struct sctp_paddrparams))
return -EINVAL;
if (copy_from_user(&params, optval, optlen))
return -EFAULT;
asoc = sctp_id2assoc(sk, params.spp_assoc_id);
if (!asoc)
return -EINVAL;
addr = (union sctp_addr *) &(params.spp_address);
trans = sctp_assoc_lookup_paddr(asoc, addr);
if (!trans)
return -ENOENT;
/* 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 value of the heartbeat interval, in milliseconds. A value of
* UINT32_MAX (4294967295), when modifying the parameter, specifies
* that a heartbeat should be sent immediately to the peer address,
* and the current interval should remain unchanged.
*/
if (0xffffffff == params.spp_hbinterval) {
error = sctp_primitive_REQUESTHEARTBEAT (asoc, trans);
if (error)
return error;
}
else {
/* The value of the heartbeat interval, in milliseconds. A value of 0,
* when modifying the parameter, specifies that the heartbeat on this
* address should be disabled.
*/
if (params.spp_hbinterval) {
trans->hb_allowed = 1;
trans->hb_interval = params.spp_hbinterval * HZ / 1000;
} else
trans->hb_allowed = 0;
}
/* spp_pathmaxrxt contains the maximum number of retransmissions
* before this address shall be considered unreachable.
*/
trans->error_threshold = params.spp_pathmaxrxt;
return 0;
}
/* API 6.2 setsockopt(), getsockopt()
*
* Applications use setsockopt() and getsockopt() to set or retrieve
......@@ -1342,6 +1425,11 @@ 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:
retval = sctp_setsockopt_set_peer_addr_params(sk, optval,
optlen);
break;
default:
retval = -ENOPROTOOPT;
break;
......@@ -1354,11 +1442,107 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
return retval;
}
/* FIXME: Write comments. */
/* API 3.1.6 connect() - UDP Style Syntax
*
* An application may use the connect() call in the UDP model to initiate an
* association without sending data.
*
* The syntax is:
*
* ret = connect(int sd, const struct sockaddr *nam, socklen_t len);
*
* sd: the socket descriptor to have a new association added to.
*
* nam: the address structure (either struct sockaddr_in or struct
* sockaddr_in6 defined in RFC2553 [7]).
*
* len: the size of the address.
*/
SCTP_STATIC int sctp_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
return -EOPNOTSUPP; /* STUB */
sctp_opt_t *sp;
sctp_endpoint_t *ep;
sctp_association_t *asoc;
sctp_transport_t *transport;
union sctp_addr to;
sctp_scope_t scope;
long timeo;
int err = 0;
sctp_lock_sock(sk);
SCTP_DEBUG_PRINTK("%s - sk: %p, sockaddr: %p, addr_len: %d)\n",
__FUNCTION__, sk, uaddr, addr_len);
sp = sctp_sk(sk);
ep = sp->ep;
/* connect() cannot be done on a peeled-off socket. */
if (SCTP_SOCKET_UDP_HIGH_BANDWIDTH == sp->type) {
err = -EISCONN;
goto out_unlock;
}
err = sctp_verify_addr(sk, uaddr, addr_len);
if (err)
goto out_unlock;
memcpy(&to, uaddr, addr_len);
to.v4.sin_port = ntohs(to.v4.sin_port);
asoc = sctp_endpoint_lookup_assoc(ep, &to, &transport);
if (asoc) {
if (asoc->state >= SCTP_STATE_ESTABLISHED)
err = -EISCONN;
else
err = -EALREADY;
goto out_unlock;
}
/* If we could not find a matching association on the endpoint,
* make sure that there is no peeled-off association matching the
* peer address even on another socket.
*/
if (sctp_endpoint_is_peeled_off(ep, &to)) {
err = -EADDRNOTAVAIL;
goto out_unlock;
}
/* If a bind() or sctp_bindx() is not called prior to a connect()
* call, the system picks an ephemeral port and will choose an address
* set equivalent to binding with a wildcard address.
*/
if (!ep->base.bind_addr.port) {
if (sctp_autobind(sk)) {
err = -EAGAIN;
goto out_unlock;
}
}
scope = sctp_scope(&to);
asoc = sctp_association_new(ep, sk, scope, GFP_KERNEL);
if (!asoc) {
err = -ENOMEM;
goto out_unlock;
}
/* Prime the peer's transport structures. */
transport = sctp_assoc_add_peer(asoc, &to, GFP_KERNEL);
err = sctp_primitive_ASSOCIATE(asoc, NULL);
if (err < 0) {
sctp_association_free(asoc);
goto out_unlock;
}
timeo = sock_sndtimeo(sk, sk->socket->file->f_flags & O_NONBLOCK);
err = sctp_wait_for_connect(asoc, &timeo);
out_unlock:
sctp_release_sock(sk);
return err;
}
/* FIXME: Write comments. */
......@@ -1503,28 +1687,26 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, char *optval,
if (len != sizeof(status)) {
retval = -EINVAL;
goto out_nounlock;
goto out;
}
if (copy_from_user(&status, optval, sizeof(status))) {
retval = -EFAULT;
goto out_nounlock;
goto out;
}
sctp_lock_sock(sk);
associd = status.sstat_assoc_id;
if ((SCTP_SOCKET_UDP_HIGH_BANDWIDTH != sctp_sk(sk)->type) && associd) {
assoc = sctp_id2assoc(sk, associd);
if (!assoc) {
retval = -EINVAL;
goto out_unlock;
goto out;
}
} else {
ep = sctp_sk(sk)->ep;
if (list_empty(&ep->asocs)) {
retval = -EINVAL;
goto out_unlock;
goto out;
}
assoc = list_entry(ep->asocs.next, sctp_association_t, asocs);
......@@ -1542,8 +1724,8 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, char *optval,
status.sstat_fragmentation_point = assoc->frag_point;
status.sstat_primary.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
memcpy(&status.sstat_primary.spinfo_address,
&(transport->ipaddr), sizeof(sockaddr_storage_t));
status.sstat_primary.spinfo_state = transport->state.active;
&(transport->ipaddr), sizeof(union sctp_addr));
status.sstat_primary.spinfo_state = transport->active;
status.sstat_primary.spinfo_cwnd = transport->cwnd;
status.sstat_primary.spinfo_srtt = transport->srtt;
status.sstat_primary.spinfo_rto = transport->rto;
......@@ -1551,7 +1733,7 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, char *optval,
if (put_user(len, optlen)) {
retval = -EFAULT;
goto out_unlock;
goto out;
}
SCTP_DEBUG_PRINTK("sctp_getsockopt_sctp_status(%d): %d %d %p\n",
......@@ -1560,13 +1742,10 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, char *optval,
if (copy_to_user(optval, &status, len)) {
retval = -EFAULT;
goto out_unlock;
goto out;
}
out_unlock:
sctp_release_sock(sk);
out_nounlock:
out:
return (retval);
}
......@@ -1684,25 +1863,23 @@ static inline int sctp_getsockopt_peeloff(struct sock *sk, int len, char *optval
if (copy_from_user(&peeloff, optval, len))
return -EFAULT;
sctp_lock_sock(sk);
assoc = sctp_id2assoc(sk, peeloff.associd);
if (NULL == assoc) {
retval = -EINVAL;
goto out_unlock;
goto out;
}
SCTP_DEBUG_PRINTK("%s: sk: %p assoc: %p\n", __FUNCTION__, sk, assoc);
retval = sctp_do_peeloff(assoc, &newsock);
if (retval < 0)
goto out_unlock;
goto out;
/* Map the socket to an unused fd that can be returned to the user. */
retval = sock_map_fd(newsock);
if (retval < 0) {
sock_release(newsock);
goto out_unlock;
goto out;
}
SCTP_DEBUG_PRINTK("%s: sk: %p assoc: %p newsk: %p sd: %d\n",
......@@ -1713,11 +1890,54 @@ static inline int sctp_getsockopt_peeloff(struct sock *sk, int len, char *optval
if (copy_to_user(optval, &peeloff, len))
retval = -EFAULT;
out_unlock:
sctp_release_sock(sk);
out:
return retval;
}
static inline int sctp_getsockopt_get_peer_addr_params(struct sock *sk,
int len, char *optval, int *optlen)
{
struct sctp_paddrparams params;
sctp_association_t *asoc;
union sctp_addr *addr;
sctp_transport_t *trans;
if (len != sizeof(struct sctp_paddrparams))
return -EINVAL;
if (copy_from_user(&params, optval, *optlen))
return -EFAULT;
asoc = sctp_id2assoc(sk, params.spp_assoc_id);
if (!asoc)
return -EINVAL;
addr = (union sctp_addr *) &(params.spp_address);
trans = sctp_assoc_lookup_paddr(asoc, addr);
if (!trans)
return -ENOENT;
/* The value of the heartbeat interval, in milliseconds. A value of 0,
* when modifying the parameter, specifies that the heartbeat on this
* address should be disabled.
*/
if (!trans->hb_allowed)
params.spp_hbinterval = 0;
else
params.spp_hbinterval = trans->hb_interval * 1000 / HZ;
/* spp_pathmaxrxt contains the maximum number of retransmissions
* before this address shall be considered unreachable.
*/
params.spp_pathmaxrxt = trans->error_threshold;
if (copy_to_user(optval, &params, len))
return -EFAULT;
*optlen = len;
return 0;
}
SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
char *optval, int *optlen)
{
......@@ -1748,6 +1968,8 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
if (get_user(len, optlen))
return -EFAULT;
sctp_lock_sock(sk);
switch (optname) {
case SCTP_STATUS:
retval = sctp_getsockopt_sctp_status(sk, len, optval, optlen);
......@@ -1770,11 +1992,17 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
retval = sctp_getsockopt_peeloff(sk, len, optval, optlen);
break;
case SCTP_GET_PEER_ADDR_PARAMS:
retval = sctp_getsockopt_get_peer_addr_params(sk, len, optval,
optlen);
break;
default:
retval = -ENOPROTOOPT;
break;
};
sctp_release_sock(sk);
return retval;
}
......@@ -1880,7 +2108,7 @@ static long sctp_get_port_local(struct sock *sk, unsigned short snum)
* socket is going to be sk2.
*/
int sk_reuse = sk->reuse;
sockaddr_storage_t tmpaddr;
union sctp_addr tmpaddr;
struct sock *sk2 = pp->sk;
SCTP_DEBUG_PRINTK("sctp_get_port() found a "
......@@ -1923,12 +2151,13 @@ static long sctp_get_port_local(struct sock *sk, unsigned short snum)
sctp_endpoint_t *ep2;
ep2 = sctp_sk(sk2)->ep;
if (!sk_reuse || !sk2->reuse) {
if (sctp_bind_addr_has_addr(
&ep2->base.bind_addr, &tmpaddr)) {
goto found;
}
}
if (sk_reuse && sk2->reuse)
continue;
if (sctp_bind_addr_match(&ep2->base.bind_addr,
&tmpaddr,
sctp_sk(sk)))
goto found;
}
found:
......@@ -2183,34 +2412,17 @@ void sctp_put_port(struct sock *sk)
*/
static int sctp_autobind(struct sock *sk)
{
sockaddr_storage_t autoaddr;
int addr_len = 0;
union sctp_addr autoaddr;
struct sctp_func *af;
unsigned short port;
memset(&autoaddr, 0, sizeof(sockaddr_storage_t));
switch (sk->family) {
case PF_INET:
autoaddr.v4.sin_family = AF_INET;
autoaddr.v4.sin_addr.s_addr = INADDR_ANY;
autoaddr.v4.sin_port = htons(inet_sk(sk)->num);
addr_len = sizeof(struct sockaddr_in);
break;
/* Initialize a local sockaddr structure to INADDR_ANY. */
af = sctp_sk(sk)->pf->af;
case PF_INET6:
SCTP_V6(
/* FIXME: Write me for v6! */
BUG();
autoaddr.v6.sin6_family = AF_INET6;
autoaddr.v6.sin6_port = htons(inet_sk(sk)->num);
addr_len = sizeof(struct sockaddr_in6);
);
break;
port = htons(inet_sk(sk)->num);
af->inaddr_any(&autoaddr, port);
default: /* This should not happen. */
break;
};
return sctp_do_bind(sk, &autoaddr, addr_len);
return sctp_do_bind(sk, &autoaddr, af->sockaddr_len);
}
/* Parse out IPPROTO_SCTP CMSG headers. Perform only minimal validation.
......@@ -2327,8 +2539,8 @@ SCTP_STATIC int sctp_msghdr_parse(const struct msghdr *msg,
/* Setup sk->rcv_saddr before calling get_port(). */
static inline void sctp_sk_addr_set(struct sock *sk,
const sockaddr_storage_t *newaddr,
sockaddr_storage_t *saveaddr)
const union sctp_addr *newaddr,
union sctp_addr *saveaddr)
{
struct inet_opt *inet = inet_sk(sk);
......@@ -2355,7 +2567,7 @@ static inline void sctp_sk_addr_set(struct sock *sk,
}
/* Restore sk->rcv_saddr after failing get_port(). */
static inline void sctp_sk_addr_restore(struct sock *sk, const sockaddr_storage_t *addr)
static inline void sctp_sk_addr_restore(struct sock *sk, const union sctp_addr *addr)
{
struct inet_opt *inet = inet_sk(sk);
......@@ -2498,38 +2710,33 @@ static struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags, int no
return NULL;
}
static inline int sctp_sendmsg_verify_name(struct sock *sk, struct msghdr *msg)
/* Verify that this is a valid address. */
static int sctp_verify_addr(struct sock *sk, struct sockaddr *addr, int len)
{
sockaddr_storage_t *sa;
struct sctp_func *af;
if (msg->msg_namelen < sizeof (struct sockaddr))
/* Check minimum size. */
if (len < sizeof (struct sockaddr))
return -EINVAL;
sa = (sockaddr_storage_t *) msg->msg_name;
switch (sa->sa.sa_family) {
case AF_INET:
if (msg->msg_namelen < sizeof(struct sockaddr_in))
return -EINVAL;
break;
case AF_INET6:
if (PF_INET == sk->family)
return -EINVAL;
SCTP_V6(
if (msg->msg_namelen < sizeof(struct sockaddr_in6))
return -EINVAL;
break;
);
/* Do we support this address family in general? */
af = sctp_get_af_specific(addr->sa_family);
if (!af)
return -EINVAL;
default:
/* Does this PF support this AF? */
if (!sctp_sk(sk)->pf->af_supported(addr->sa_family))
return -EINVAL;
/* Verify the minimum for this AF sockaddr. */
if (len < af->sockaddr_len)
return -EINVAL;
};
/* Disallow any illegal addresses to be used as destinations. */
if (!sctp_addr_is_valid(sa))
/* Is this a valid SCTP address? */
if (!af->addr_valid((union sctp_addr *)addr))
return -EINVAL;
return 0;
return 0;
}
/* Get the sndbuf space available at the time on the association. */
......@@ -2710,6 +2917,70 @@ static int sctp_writeable(struct sock *sk)
return amt;
}
/* Wait for an association to go into ESTABLISHED state. If timeout is 0,
* returns immediately with EINPROGRESS.
*/
static int sctp_wait_for_connect(sctp_association_t *asoc, long *timeo_p)
{
struct sock *sk = asoc->base.sk;
int err = 0;
long current_timeo = *timeo_p;
DECLARE_WAITQUEUE(wait, current);
SCTP_DEBUG_PRINTK("%s: asoc=%p, timeo=%ld\n", __FUNCTION__, asoc,
(long)(*timeo_p));
add_wait_queue_exclusive(&asoc->wait, &wait);
/* Increment the association's refcnt. */
sctp_association_hold(asoc);
for (;;) {
__set_current_state(TASK_INTERRUPTIBLE);
if (!*timeo_p)
goto do_nonblock;
if (sk->err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING ||
asoc->base.dead)
goto do_error;
if (signal_pending(current))
goto do_interrupted;
if (asoc->state == SCTP_STATE_ESTABLISHED)
break;
/* Let another process have a go. Since we are going
* to sleep anyway.
*/
sctp_release_sock(sk);
current_timeo = schedule_timeout(current_timeo);
sctp_lock_sock(sk);
*timeo_p = current_timeo;
}
out:
remove_wait_queue(&asoc->wait, &wait);
/* Release the association's refcnt. */
sctp_association_put(asoc);
__set_current_state(TASK_RUNNING);
return err;
do_error:
err = -ECONNABORTED;
goto out;
do_interrupted:
err = sock_intr_errno(*timeo_p);
goto out;
do_nonblock:
err = -EINPROGRESS;
goto out;
}
/* This proto struct describes the ULP interface for SCTP. */
struct proto sctp_prot = {
.name = "SCTP",
......
net/sctp/transport.c
View file @ 28b9daad
......@@ -9,7 +9,7 @@
*
* This module provides the abstraction for an SCTP tranport representing
* a remote transport address. For local transport addresses, we just use
* sockaddr_storage_t.
* union sctp_addr.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
......@@ -53,7 +53,7 @@
/* 1st Level Abstractions. */
/* Allocate and initialize a new transport. */
sctp_transport_t *sctp_transport_new(const sockaddr_storage_t *addr, int priority)
sctp_transport_t *sctp_transport_new(const union sctp_addr *addr, int priority)
{
sctp_transport_t *transport;
......@@ -78,14 +78,14 @@ sctp_transport_t *sctp_transport_new(const sockaddr_storage_t *addr, int priorit
/* Intialize a new transport from provided memory. */
sctp_transport_t *sctp_transport_init(sctp_transport_t *peer,
const sockaddr_storage_t *addr,
const union sctp_addr *addr,
int priority)
{
sctp_protocol_t *proto = sctp_get_protocol();
/* Copy in the address. */
peer->ipaddr = *addr;
peer->af_specific = sctp_get_af_specific(addr);
peer->af_specific = sctp_get_af_specific(addr->sa.sa_family);
peer->asoc = NULL;
/* From 6.3.1 RTO Calculation:
......@@ -104,8 +104,8 @@ sctp_transport_t *sctp_transport_init(sctp_transport_t *peer,
peer->last_time_used = jiffies;
peer->last_time_ecne_reduced = jiffies;
peer->state.active = 1;
peer->state.hb_allowed = 0;
peer->active = 1;
peer->hb_allowed = 0;
/* Initialize the default path max_retrans. */
peer->max_retrans = proto->max_retrans_path;
......@@ -203,17 +203,18 @@ void sctp_transport_set_owner(sctp_transport_t *transport,
/* Caches the dst entry for a transport's destination address and an optional
* souce address.
*/
void sctp_transport_route(sctp_transport_t *transport,
sockaddr_storage_t *saddr)
void sctp_transport_route(sctp_transport_t *transport, union sctp_addr *saddr,
struct sctp_opt *opt)
{
sctp_association_t *asoc = transport->asoc;
sctp_func_t *af = transport->af_specific;
sockaddr_storage_t *daddr = &transport->ipaddr;
struct sctp_func *af = transport->af_specific;
union sctp_addr *daddr = &transport->ipaddr;
sctp_bind_addr_t *bp;
rwlock_t *addr_lock;
struct sockaddr_storage_list *laddr;
struct list_head *pos;
struct dst_entry *dst;
union sctp_addr dst_saddr;
dst = af->get_dst(daddr, saddr);
......@@ -239,7 +240,8 @@ void sctp_transport_route(sctp_transport_t *transport,
list_for_each(pos, &bp->address_list) {
laddr = list_entry(pos, struct sockaddr_storage_list,
list);
if (af->cmp_saddr(dst, &laddr->a))
af->dst_saddr(&dst_saddr, dst);
if (opt->pf->cmp_addr(&dst_saddr, &laddr->a, opt))
goto out_unlock;
}
sctp_read_unlock(addr_lock);
......
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