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Commit f6578e8d authored by David S. Miller's avatar David S. Miller
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Merge http://linux-lksctp.bkbits.net/lksctp-2.5 

into nuts.ninka.net:/home/davem/src/BK/net-2.5
parents aa2b4427 2d14da6a
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Showing with 421 additions and 122 deletions
include/linux/sctp.h
View file @ f6578e8d
......@@ -471,13 +471,54 @@ typedef struct sctp_cwr_chunk {
sctp_cwrhdr_t cwr_hdr;
} sctp_cwr_chunk_t __attribute__((packed));
/* FIXME: Cleanup needs to continue below this line. */
/*
* ADDIP Section 3.1 New Chunk Types
*/
/* ADDIP
* Section 3.1.1 Address Configuration Change Chunk (ASCONF)
*
* Serial Number: 32 bits (unsigned integer)
* This value represents a Serial Number for the ASCONF Chunk. The
* valid range of Serial Number is from 0 to 2^32-1.
* Serial Numbers wrap back to 0 after reaching 2^32 -1.
*
* Address Parameter: 8 or 20 bytes (depending on type)
* The address is an address of the sender of the ASCONF chunk,
* the address MUST be considered part of the association by the
* peer endpoint. This field may be used by the receiver of the
* ASCONF to help in finding the association. This parameter MUST
* be present in every ASCONF message i.e. it is a mandatory TLV
* parameter.
*
* ASCONF Parameter: TLV format
* Each Address configuration change is represented by a TLV
* parameter as defined in Section 3.2. One or more requests may
* be present in an ASCONF Chunk.
*
* Section 3.1.2 Address Configuration Acknowledgement Chunk (ASCONF-ACK)
*
* Serial Number: 32 bits (unsigned integer)
* This value represents the Serial Number for the received ASCONF
* Chunk that is acknowledged by this chunk. This value is copied
* from the received ASCONF Chunk.
*
* ASCONF Parameter Response: TLV format
* The ASCONF Parameter Response is used in the ASCONF-ACK to
* report status of ASCONF processing.
*/
typedef struct sctp_addiphdr {
__u32 serial;
__u8 params[0];
} sctp_addiphdr_t __attribute__((packed));
typedef struct sctp_addip_chunk {
sctp_chunkhdr_t chunk_hdr;
sctp_addiphdr_t addip_hdr;
} sctp_addip_chunk_t __attribute__((packed));
/* FIXME: Cleanup needs to continue below this line. */
/* ADDIP Section 3.1.1
*
......
include/net/sctp/command.h
View file @ f6578e8d
......@@ -87,6 +87,7 @@ typedef enum {
SCTP_CMD_RTO_PENDING, /* Set transport's rto_pending. */
SCTP_CMD_PART_DELIVER, /* Partial data delivery considerations. */
SCTP_CMD_RENEGE, /* Renege data on an association. */
SCTP_CMD_SETUP_T4, /* ADDIP, setup T4 RTO timer parms. */
SCTP_CMD_LAST
} sctp_verb_t;
......
include/net/sctp/constants.h
View file @ f6578e8d
......@@ -75,6 +75,9 @@ enum { SCTP_DEFAULT_INSTREAMS = SCTP_MAX_STREAM };
#define SCTP_NUM_BASE_CHUNK_TYPES (SCTP_CID_BASE_MAX + 1)
#define SCTP_NUM_CHUNK_TYPES (SCTP_NUM_BASE_CHUNKTYPES + 2)
#define SCTP_CID_ADDIP_MIN SCTP_CID_ASCONF
#define SCTP_CID_ADDIP_MAX SCTP_CID_ASCONF_ACK
#define SCTP_NUM_ADDIP_CHUNK_TYPES 2
/* These are the different flavours of event. */
typedef enum {
......@@ -99,6 +102,7 @@ typedef enum {
SCTP_EVENT_TIMEOUT_T1_INIT,
SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
SCTP_EVENT_TIMEOUT_T3_RTX,
SCTP_EVENT_TIMEOUT_T4_RTO,
SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
SCTP_EVENT_TIMEOUT_HEARTBEAT,
SCTP_EVENT_TIMEOUT_SACK,
......@@ -122,9 +126,10 @@ typedef enum {
SCTP_PRIMITIVE_ABORT,
SCTP_PRIMITIVE_SEND,
SCTP_PRIMITIVE_REQUESTHEARTBEAT,
SCTP_PRIMITIVE_ASCONF,
} sctp_event_primitive_t;
#define SCTP_EVENT_PRIMITIVE_MAX SCTP_PRIMITIVE_REQUESTHEARTBEAT
#define SCTP_EVENT_PRIMITIVE_MAX SCTP_PRIMITIVE_ASCONF
#define SCTP_NUM_PRIMITIVE_TYPES (SCTP_EVENT_PRIMITIVE_MAX + 1)
/* We define here a utility type for manipulating subtypes.
......
include/net/sctp/sm.h
View file @ f6578e8d
......@@ -117,6 +117,7 @@ sctp_state_fn_t sctp_sf_tabort_8_4_8;
sctp_state_fn_t sctp_sf_operr_notify;
sctp_state_fn_t sctp_sf_t1_timer_expire;
sctp_state_fn_t sctp_sf_t2_timer_expire;
sctp_state_fn_t sctp_sf_t4_timer_expire;
sctp_state_fn_t sctp_sf_t5_timer_expire;
sctp_state_fn_t sctp_sf_sendbeat_8_3;
sctp_state_fn_t sctp_sf_beat_8_3;
......@@ -137,6 +138,8 @@ sctp_state_fn_t sctp_sf_unk_chunk;
sctp_state_fn_t sctp_sf_do_8_5_1_E_sa;
sctp_state_fn_t sctp_sf_cookie_echoed_err;
sctp_state_fn_t sctp_sf_do_5_2_6_stale;
sctp_state_fn_t sctp_sf_do_asconf;
sctp_state_fn_t sctp_sf_do_asconf_ack;
/* Prototypes for primitive event state functions. */
sctp_state_fn_t sctp_sf_do_prm_asoc;
......@@ -154,6 +157,7 @@ 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;
sctp_state_fn_t sctp_sf_do_prm_asconf;
/* Prototypes for other event state functions. */
sctp_state_fn_t sctp_sf_do_9_2_start_shutdown;
......@@ -184,10 +188,6 @@ sctp_state_fn_t sctp_do_9_2_reshutack;
sctp_state_fn_t sctp_do_8_3_hb_err;
sctp_state_fn_t sctp_heartoff;
/* Prototypes for addip related state functions. Not in use. */
sctp_state_fn_t sctp_addip_do_asconf;
sctp_state_fn_t sctp_addip_do_asconf_ack;
/* Prototypes for utility support functions. */
__u8 sctp_get_chunk_type(struct sctp_chunk *chunk);
const sctp_sm_table_entry_t *sctp_sm_lookup_event(sctp_event_t,
......@@ -260,6 +260,14 @@ struct sctp_chunk *sctp_make_op_error(const struct sctp_association *,
__u16 cause_code,
const void *payload,
size_t paylen);
struct sctp_chunk *sctp_make_asconf(struct sctp_association *asoc,
union sctp_addr *addr,
int vparam_len);
struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
struct sctp_chunk *asconf,
int vparam_len);
void sctp_chunk_assign_tsn(struct sctp_chunk *);
void sctp_chunk_assign_ssn(struct sctp_chunk *);
......
include/net/sctp/structs.h
View file @ f6578e8d
......@@ -169,11 +169,11 @@ extern struct sctp_globals {
/* This is the hash of all endpoints. */
int ep_hashsize;
struct sctp_hashbucket *ep_hashbucket;
struct sctp_hashbucket *ep_hashtable;
/* This is the hash of all associations. */
int assoc_hashsize;
struct sctp_hashbucket *assoc_hashbucket;
struct sctp_hashbucket *assoc_hashtable;
/* This is the sctp port control hash. */
int port_hashsize;
......@@ -207,9 +207,9 @@ extern struct sctp_globals {
#define sctp_max_outstreams (sctp_globals.max_outstreams)
#define sctp_address_families (sctp_globals.address_families)
#define sctp_ep_hashsize (sctp_globals.ep_hashsize)
#define sctp_ep_hashbucket (sctp_globals.ep_hashbucket)
#define sctp_ep_hashtable (sctp_globals.ep_hashtable)
#define sctp_assoc_hashsize (sctp_globals.assoc_hashsize)
#define sctp_assoc_hashbucket (sctp_globals.assoc_hashbucket)
#define sctp_assoc_hashtable (sctp_globals.assoc_hashtable)
#define sctp_port_hashsize (sctp_globals.port_hashsize)
#define sctp_port_rover (sctp_globals.port_rover)
#define sctp_port_alloc_lock (sctp_globals.port_alloc_lock)
......@@ -571,6 +571,7 @@ struct sctp_chunk {
struct sctp_ecnehdr *ecne_hdr;
struct sctp_cwrhdr *ecn_cwr_hdr;
struct sctp_errhdr *err_hdr;
struct sctp_addiphdr *addip_hdr;
} subh;
__u8 *chunk_end;
......@@ -1385,8 +1386,10 @@ struct sctp_association {
int cookie_len;
void *cookie;
/* ADDIP Extention (ADDIP) --xguo */
/* <expected peer-serial-number> minus 1 (ADDIP sec. 4.2 C1) */
/* ADDIP Section 4.2 Upon reception of an ASCONF Chunk.
* C1) ... "Peer-Serial-Number'. This value MUST be initialized to the
* Initial TSN Value minus 1
*/
__u32 addip_serial;
} peer;
......@@ -1623,12 +1626,12 @@ struct sctp_association {
/* ADDIP Section 4.1 ASCONF Chunk Procedures
*
* A2) A serial number should be assigned to the Chunk. The
* serial number should be a monotonically increasing
* number. All serial numbers are defined to be initialized at
* serial number SHOULD be a monotonically increasing
* number. The serial number SHOULD be initialized at
* the start of the association to the same value as the
* Initial TSN.
*
* [and]
* Initial TSN and every time a new ASCONF chunk is created
* it is incremented by one after assigning the serial number
* to the newly created chunk.
*
* ADDIP
* 3.1.1 Address/Stream Configuration Change Chunk (ASCONF)
......@@ -1637,14 +1640,11 @@ struct sctp_association {
*
* This value represents a Serial Number for the ASCONF
* Chunk. The valid range of Serial Number is from 0 to
* 4294967295 (2**32 - 1). Serial Numbers wrap back to 0
* 4294967295 (2^32 - 1). Serial Numbers wrap back to 0
* after reaching 4294967295.
*/
__u32 addip_serial;
/* Is the ADDIP extension enabled for this association? */
char addip_enable;
/* Need to send an ECNE Chunk? */
char need_ecne;
......
net/sctp/associola.c
View file @ f6578e8d
......@@ -221,12 +221,14 @@ struct sctp_association *sctp_association_init(struct sctp_association *asoc,
* remote endpoint it should do the following:
* ...
* A2) a serial number should be assigned to the chunk. The serial
* number should be a monotonically increasing number. All serial
* numbers are defined to be initialized at the start of the
* number SHOULD be a monotonically increasing number. The serial
* numbers SHOULD be initialized at the start of the
* association to the same value as the initial TSN.
*/
asoc->addip_serial = asoc->c.initial_tsn;
skb_queue_head_init(&asoc->addip_chunks);
/* Make an empty list of remote transport addresses. */
INIT_LIST_HEAD(&asoc->peer.transport_addr_list);
......@@ -264,8 +266,6 @@ struct sctp_association *sctp_association_init(struct sctp_association *asoc,
/* Set up the tsn tracking. */
sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_SIZE, 0);
skb_queue_head_init(&asoc->addip_chunks);
asoc->need_ecne = 0;
asoc->eyecatcher = SCTP_ASSOC_EYECATCHER;
......
net/sctp/debug.c
View file @ f6578e8d
......@@ -185,6 +185,7 @@ static const char *sctp_timer_tbl[] = {
"TIMEOUT_T1_INIT",
"TIMEOUT_T2_SHUTDOWN",
"TIMEOUT_T3_RTX",
"TIMEOUT_T4_RTO",
"TIMEOUT_T5_SHUTDOWN_GUARD",
"TIMEOUT_HEARTBEAT",
"TIMEOUT_SACK",
......
net/sctp/endpointola.c
View file @ f6578e8d
......@@ -131,6 +131,7 @@ struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
ep->timeouts[SCTP_EVENT_TIMEOUT_T2_SHUTDOWN] =
sp->rtoinfo.srto_initial * HZ / 1000;
ep->timeouts[SCTP_EVENT_TIMEOUT_T3_RTX] = 0;
ep->timeouts[SCTP_EVENT_TIMEOUT_T4_RTO] = 0;
/* sctpimpguide-05 Section 2.12.2
* If the 'T5-shutdown-guard' timer is used, it SHOULD be set to the
......
net/sctp/input.c
View file @ f6578e8d
......@@ -528,7 +528,7 @@ void __sctp_hash_endpoint(struct sctp_endpoint *ep)
epb = &ep->base;
epb->hashent = sctp_ep_hashfn(epb->bind_addr.port);
head = &sctp_ep_hashbucket[epb->hashent];
head = &sctp_ep_hashtable[epb->hashent];
sctp_write_lock(&head->lock);
epp = &head->chain;
......@@ -558,7 +558,7 @@ void __sctp_unhash_endpoint(struct sctp_endpoint *ep)
epb->hashent = sctp_ep_hashfn(epb->bind_addr.port);
head = &sctp_ep_hashbucket[epb->hashent];
head = &sctp_ep_hashtable[epb->hashent];
sctp_write_lock(&head->lock);
......@@ -589,7 +589,7 @@ struct sctp_endpoint *__sctp_rcv_lookup_endpoint(const union sctp_addr *laddr)
int hash;
hash = sctp_ep_hashfn(laddr->v4.sin_port);
head = &sctp_ep_hashbucket[hash];
head = &sctp_ep_hashtable[hash];
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
ep = sctp_ep(epb);
......@@ -627,7 +627,7 @@ void __sctp_hash_established(struct sctp_association *asoc)
/* Calculate which chain this entry will belong to. */
epb->hashent = sctp_assoc_hashfn(epb->bind_addr.port, asoc->peer.port);
head = &sctp_assoc_hashbucket[epb->hashent];
head = &sctp_assoc_hashtable[epb->hashent];
sctp_write_lock(&head->lock);
epp = &head->chain;
......@@ -658,7 +658,7 @@ void __sctp_unhash_established(struct sctp_association *asoc)
epb->hashent = sctp_assoc_hashfn(epb->bind_addr.port,
asoc->peer.port);
head = &sctp_assoc_hashbucket[epb->hashent];
head = &sctp_assoc_hashtable[epb->hashent];
sctp_write_lock(&head->lock);
......@@ -688,7 +688,7 @@ struct sctp_association *__sctp_lookup_association(
* have wildcards anyways.
*/
hash = sctp_assoc_hashfn(local->v4.sin_port, peer->v4.sin_port);
head = &sctp_assoc_hashbucket[hash];
head = &sctp_assoc_hashtable[hash];
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
asoc = sctp_assoc(epb);
......
net/sctp/proc.c
View file @ f6578e8d
......@@ -172,7 +172,7 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT LADDRS\n");
for (hash = 0; hash < sctp_ep_hashsize; hash++) {
head = &sctp_ep_hashbucket[hash];
head = &sctp_ep_hashtable[hash];
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
ep = sctp_ep(epb);
......@@ -234,7 +234,7 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, " ASSOC SOCK STY SST ST HBKT LPORT RPORT "
"LADDRS <-> RADDRS\n");
for (hash = 0; hash < sctp_assoc_hashsize; hash++) {
head = &sctp_assoc_hashbucket[hash];
head = &sctp_assoc_hashtable[hash];
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
assoc = sctp_assoc(epb);
......
net/sctp/protocol.c
View file @ f6578e8d
......@@ -934,6 +934,8 @@ __init int sctp_init(void)
{
int i;
int status = 0;
unsigned long goal;
int order;
/* SCTP_DEBUG sanity check. */
if (!sctp_sanity_check())
......@@ -1017,52 +1019,75 @@ __init int sctp_init(void)
sctp_max_instreams = SCTP_DEFAULT_INSTREAMS;
sctp_max_outstreams = SCTP_DEFAULT_OUTSTREAMS;
/* Allocate and initialize the association hash table. */
sctp_assoc_hashsize = 4096;
sctp_assoc_hashbucket = (struct sctp_hashbucket *)
kmalloc(4096 * sizeof(struct sctp_hashbucket), GFP_KERNEL);
if (!sctp_assoc_hashbucket) {
/* Size and allocate the association hash table.
* The methodology is similar to that of the tcp hash tables.
*/
if (num_physpages >= (128 * 1024))
goal = num_physpages >> (22 - PAGE_SHIFT);
else
goal = num_physpages >> (24 - PAGE_SHIFT);
for (order = 0; (1UL << order) < goal; order++)
;
do {
sctp_assoc_hashsize = (1UL << order) * PAGE_SIZE /
sizeof(struct sctp_hashbucket);
if ((sctp_assoc_hashsize > (64 * 1024)) && order > 0)
continue;
sctp_assoc_hashtable = (struct sctp_hashbucket *)
__get_free_pages(GFP_ATOMIC, order);
} while (!sctp_assoc_hashtable && --order > 0);
if (!sctp_assoc_hashtable) {
printk(KERN_ERR "SCTP: Failed association hash alloc.\n");
status = -ENOMEM;
goto err_ahash_alloc;
}
for (i = 0; i < sctp_assoc_hashsize; i++) {
sctp_assoc_hashbucket[i].lock = RW_LOCK_UNLOCKED;
sctp_assoc_hashbucket[i].chain = NULL;
sctp_assoc_hashtable[i].lock = RW_LOCK_UNLOCKED;
sctp_assoc_hashtable[i].chain = NULL;
}
/* Allocate and initialize the endpoint hash table. */
sctp_ep_hashsize = 64;
sctp_ep_hashbucket = (struct sctp_hashbucket *)
sctp_ep_hashtable = (struct sctp_hashbucket *)
kmalloc(64 * sizeof(struct sctp_hashbucket), GFP_KERNEL);
if (!sctp_ep_hashbucket) {
if (!sctp_ep_hashtable) {
printk(KERN_ERR "SCTP: Failed endpoint_hash alloc.\n");
status = -ENOMEM;
goto err_ehash_alloc;
}
for (i = 0; i < sctp_ep_hashsize; i++) {
sctp_ep_hashbucket[i].lock = RW_LOCK_UNLOCKED;
sctp_ep_hashbucket[i].chain = NULL;
sctp_ep_hashtable[i].lock = RW_LOCK_UNLOCKED;
sctp_ep_hashtable[i].chain = NULL;
}
/* Allocate and initialize the SCTP port hash table. */
sctp_port_hashsize = 4096;
do {
sctp_port_hashsize = (1UL << order) * PAGE_SIZE /
sizeof(struct sctp_bind_hashbucket);
if ((sctp_port_hashsize > (64 * 1024)) && order > 0)
continue;
sctp_port_hashtable = (struct sctp_bind_hashbucket *)
kmalloc(4096 * sizeof(struct sctp_bind_hashbucket),GFP_KERNEL);
__get_free_pages(GFP_ATOMIC, order);
} while (!sctp_port_hashtable && --order > 0);
if (!sctp_port_hashtable) {
printk(KERN_ERR "SCTP: Failed bind hash alloc.");
status = -ENOMEM;
goto err_bhash_alloc;
}
sctp_port_alloc_lock = SPIN_LOCK_UNLOCKED;
sctp_port_rover = sysctl_local_port_range[0] - 1;
for (i = 0; i < sctp_port_hashsize; i++) {
sctp_port_hashtable[i].lock = SPIN_LOCK_UNLOCKED;
sctp_port_hashtable[i].chain = NULL;
}
sctp_port_alloc_lock = SPIN_LOCK_UNLOCKED;
sctp_port_rover = sysctl_local_port_range[0] - 1;
printk(KERN_INFO "SCTP: Hash tables configured "
"(established %d bind %d)\n",
sctp_assoc_hashsize, sctp_port_hashsize);
sctp_sysctl_register();
INIT_LIST_HEAD(&sctp_address_families);
......@@ -1096,11 +1121,15 @@ __init int sctp_init(void)
err_v6_init:
sctp_sysctl_unregister();
list_del(&sctp_ipv4_specific.list);
kfree(sctp_port_hashtable);
free_pages((unsigned long)sctp_port_hashtable,
get_order(sctp_port_hashsize *
sizeof(struct sctp_bind_hashbucket)));
err_bhash_alloc:
kfree(sctp_ep_hashbucket);
kfree(sctp_ep_hashtable);
err_ehash_alloc:
kfree(sctp_assoc_hashbucket);
free_pages((unsigned long)sctp_assoc_hashtable,
get_order(sctp_assoc_hashsize *
sizeof(struct sctp_hashbucket)));
err_ahash_alloc:
sctp_dbg_objcnt_exit();
sctp_proc_exit();
......@@ -1136,9 +1165,13 @@ __exit void sctp_exit(void)
sctp_sysctl_unregister();
list_del(&sctp_ipv4_specific.list);
kfree(sctp_assoc_hashbucket);
kfree(sctp_ep_hashbucket);
kfree(sctp_port_hashtable);
free_pages((unsigned long)sctp_assoc_hashtable,
get_order(sctp_assoc_hashsize *
sizeof(struct sctp_hashbucket)));
kfree(sctp_ep_hashtable);
free_pages((unsigned long)sctp_port_hashtable,
get_order(sctp_port_hashsize *
sizeof(struct sctp_bind_hashbucket)));
kmem_cache_destroy(sctp_chunk_cachep);
kmem_cache_destroy(sctp_bucket_cachep);
......
net/sctp/sm_make_chunk.c
View file @ f6578e8d
......@@ -2088,3 +2088,85 @@ int sockaddr2sctp_addr(const union sctp_addr *sa, union sctp_addr_param *p)
return len;
}
/*
* ADDIP 3.1.1 Address Configuration Change Chunk (ASCONF)
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Type = 0xC1 | Chunk Flags | Chunk Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Serial Number |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Address Parameter |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ASCONF Parameter #1 |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* \ \
* / .... /
* \ \
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ASCONF Parameter #N |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* Address Parameter and other parameter will not be wrapped in this function
*/
struct sctp_chunk *sctp_make_asconf(struct sctp_association *asoc,
union sctp_addr *addr, int vparam_len)
{
sctp_addiphdr_t asconf;
struct sctp_chunk *retval;
int length = sizeof(asconf) + vparam_len;
union sctp_params addrparam;
int addrlen;
addrlen = sockaddr2sctp_addr(addr, (union sctp_addr_param *)&addrparam);
if (!addrlen)
return NULL;
length += addrlen;
/* Create the chunk. */
retval = sctp_make_chunk(asoc, SCTP_CID_ASCONF, 0, length);
if (!retval)
return NULL;
asconf.serial = asoc->addip_serial++;
retval->subh.addip_hdr =
sctp_addto_chunk(retval, sizeof(asconf), &asconf);
retval->param_hdr.v =
sctp_addto_chunk(retval, addrlen, &addr);
return retval;
}
/*
* Unpack the parameters in an ASCONF chunk into an association and
* generate ASCONF-ACK chunk.
*
* ADDIP 3.1.2 Address Configuration Acknowledgement Chunk (ASCONF-ACK)
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Type = 0x80 | Chunk Flags | Chunk Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Serial Number |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ASCONF Parameter Response#1 |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* \ \
* / .... /
* \ \
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ASCONF Parameter Response#N |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* All the parameter respoinces will be added in this function.
*/
struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
struct sctp_chunk *asconf,
int vparam_len)
{
// FIXME: process asconf chunk
return NULL;
}
net/sctp/sm_sideeffect.c
View file @ f6578e8d
......@@ -294,6 +294,12 @@ void sctp_generate_t2_shutdown_event(unsigned long data)
sctp_generate_timeout_event(asoc, SCTP_EVENT_TIMEOUT_T2_SHUTDOWN);
}
void sctp_generate_t4_rto_event(unsigned long data)
{
struct sctp_association *asoc = (struct sctp_association *) data;
sctp_generate_timeout_event(asoc, SCTP_EVENT_TIMEOUT_T4_RTO);
}
void sctp_generate_t5_shutdown_guard_event(unsigned long data)
{
struct sctp_association *asoc = (struct sctp_association *)data;
......@@ -359,6 +365,7 @@ sctp_timer_event_t *sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES] = {
sctp_generate_t1_init_event,
sctp_generate_t2_shutdown_event,
NULL,
sctp_generate_t4_rto_event,
sctp_generate_t5_shutdown_guard_event,
sctp_generate_heartbeat_event,
sctp_generate_sack_event,
......@@ -666,6 +673,23 @@ static void sctp_cmd_delete_tcb(sctp_cmd_seq_t *cmds,
sctp_association_free(asoc);
}
/*
* ADDIP Section 4.1 ASCONF Chunk Procedures
* A4) Start a T-4 RTO timer, using the RTO value of the selected
* destination address (normally the primary path; see RFC2960
* section 6.4 for details).
*/
static void sctp_cmd_setup_t4(sctp_cmd_seq_t *cmds,
struct sctp_association *asoc,
struct sctp_chunk *chunk)
{
struct sctp_transport *t;
t = asoc->peer.primary_path;
asoc->timeouts[SCTP_EVENT_TIMEOUT_T4_RTO] = t->rto;
chunk->transport = 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
* functionality there.
......@@ -1177,6 +1201,10 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
GFP_ATOMIC);
break;
case SCTP_CMD_SETUP_T4:
sctp_cmd_setup_t4(commands, asoc, cmd->obj.ptr);
break;
default:
printk(KERN_WARNING "Impossible command: %u, %p\n",
cmd->verb, cmd->obj.ptr);
......
net/sctp/sm_statefuns.c
View file @ f6578e8d
......@@ -3062,6 +3062,36 @@ sctp_disposition_t sctp_sf_do_8_5_1_E_sa(const struct sctp_endpoint *ep,
return sctp_sf_shut_8_4_5(ep, NULL, type, arg, commands);
}
/*
* ADDIP Section 4.2 Upon reception of an ASCONF Chunk
* When an endpoint receive an ASCONF Chunk from the remote peer
* special procedures MAY be needed to identify the association the
* ASCONF Chunk is associated with. To properly find the association
* the following procedures should be L1 to L4 and C1 to C5
*/
sctp_disposition_t sctp_sf_do_asconf(const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type, void *arg,
sctp_cmd_seq_t *commands)
{
// FIXME: Handle the ASCONF chunk
return SCTP_DISPOSITION_CONSUME;
}
/*
* ADDIP Section 4.3 General rules for address manipulation
* When building TLV parameters for the ASCONF Chunk that will add or
* delete IP addresses the D0 to D13 rules should be applied:
*/
sctp_disposition_t sctp_sf_do_asconf_ack(const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type, void *arg,
sctp_cmd_seq_t *commands)
{
// FIXME: Handle the ASCONF-ACK chunk
return SCTP_DISPOSITION_CONSUME;
}
/*
* Process an unknown chunk.
*
......@@ -3815,6 +3845,26 @@ sctp_disposition_t sctp_sf_do_prm_requestheartbeat(
commands);
}
/*
* ADDIP Section 4.1 ASCONF Chunk Procedures
* When an endpoint has an ASCONF signaled change to be sent to the
* remote endpoint it should do A1 to A9
*/
sctp_disposition_t sctp_sf_do_prm_asconf(const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type,
void *arg,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *chunk = arg;
sctp_add_cmd_sf(commands, SCTP_CMD_SETUP_T4, SCTP_CHUNK(chunk));
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_START,
SCTP_TO(SCTP_EVENT_TIMEOUT_T4_RTO));
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(chunk));
return SCTP_DISPOSITION_CONSUME;
}
/*
* Ignore the primitive event
*
......@@ -4213,6 +4263,21 @@ sctp_disposition_t sctp_sf_t2_timer_expire(const struct sctp_endpoint *ep,
return SCTP_DISPOSITION_NOMEM;
}
/*
* ADDIP Section 4.1 ASCONF CHunk Procedures
* If the T-4 RTO timer expires the endpoint should do B1 to B5
*/
sctp_disposition_t sctp_sf_t4_timer_expire(
const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type,
void *arg,
sctp_cmd_seq_t *commands)
{
// FIXME: need to handle t4 expire
return SCTP_DISPOSITION_CONSUME;
}
/* sctpimpguide-05 Section 2.12.2
* The sender of the SHUTDOWN MAY also start an overall guard timer
* 'T5-shutdown-guard' to bound the overall time for shutdown sequence.
......
net/sctp/sm_statetable.c
View file @ f6578e8d
......@@ -436,6 +436,55 @@ const sctp_sm_table_entry_t chunk_event_table[SCTP_NUM_BASE_CHUNK_TYPES][SCTP_ST
TYPE_SCTP_SHUTDOWN_COMPLETE,
}; /* state_fn_t chunk_event_table[][] */
#define TYPE_SCTP_ASCONF { \
/* SCTP_STATE_EMPTY */ \
{.fn = sctp_sf_ootb, .name = "sctp_sf_ootb"}, \
/* SCTP_STATE_CLOSED */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_COOKIE_WAIT */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_COOKIE_ECHOED */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_ESTABLISHED */ \
{.fn = sctp_sf_do_asconf, .name = "sctp_sf_do_asconf"}, \
/* SCTP_STATE_SHUTDOWN_PENDING */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_SHUTDOWN_SENT */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
} /* TYPE_SCTP_ASCONF */
#define TYPE_SCTP_ASCONF_ACK { \
/* SCTP_STATE_EMPTY */ \
{.fn = sctp_sf_ootb, .name = "sctp_sf_ootb"}, \
/* SCTP_STATE_CLOSED */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_COOKIE_WAIT */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_COOKIE_ECHOED */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_ESTABLISHED */ \
{.fn = sctp_sf_do_asconf_ack, .name = "sctp_sf_do_asconf_ack"}, \
/* SCTP_STATE_SHUTDOWN_PENDING */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_SHUTDOWN_SENT */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
{.fn = sctp_sf_discard_chunk, .name = "sctp_sf_discard_chunk"}, \
} /* TYPE_SCTP_ASCONF_ACK */
/* The primary index for this table is the chunk type.
* The secondary index for this table is the state.
*/
const sctp_sm_table_entry_t addip_chunk_event_table[SCTP_NUM_ADDIP_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
TYPE_SCTP_ASCONF,
TYPE_SCTP_ASCONF_ACK,
}; /*state_fn_t addip_chunk_event_table[][] */
static const sctp_sm_table_entry_t
chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
......@@ -582,6 +631,26 @@ chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
.name = "sctp_sf_do_prm_requestheartbeat"}, \
} /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
#define TYPE_SCTP_PRIMITIVE_ASCONF { \
/* SCTP_STATE_EMPTY */ \
{.fn = sctp_sf_bug, .name = "sctp_sf_bug"}, \
/* SCTP_STATE_CLOSED */ \
{.fn = sctp_sf_error_closed, .name = "sctp_sf_error_closed"}, \
/* SCTP_STATE_COOKIE_WAIT */ \
{.fn = sctp_sf_error_closed, .name = "sctp_sf_error_closed"}, \
/* SCTP_STATE_COOKIE_ECHOED */ \
{.fn = sctp_sf_error_closed, .name = "sctp_sf_error_closed"}, \
/* SCTP_STATE_ESTABLISHED */ \
{.fn = sctp_sf_do_prm_asconf, .name = "sctp_sf_do_prm_asconf"}, \
/* SCTP_STATE_SHUTDOWN_PENDING */ \
{.fn = sctp_sf_error_shutdown, .name = "sctp_sf_error_shutdown"}, \
/* SCTP_STATE_SHUTDOWN_SENT */ \
{.fn = sctp_sf_error_shutdown, .name = "sctp_sf_error_shutdown"}, \
/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
{.fn = sctp_sf_error_shutdown, .name = "sctp_sf_error_shutdown"}, \
/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
{.fn = sctp_sf_error_shutdown, .name = "sctp_sf_error_shutdown"}, \
} /* TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT */
/* The primary index for this table is the primitive type.
* The secondary index for this table is the state.
......@@ -592,6 +661,7 @@ const sctp_sm_table_entry_t primitive_event_table[SCTP_NUM_PRIMITIVE_TYPES][SCTP
TYPE_SCTP_PRIMITIVE_ABORT,
TYPE_SCTP_PRIMITIVE_SEND,
TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
TYPE_SCTP_PRIMITIVE_ASCONF,
};
#define TYPE_SCTP_OTHER_NO_PENDING_TSN { \
......@@ -726,6 +796,27 @@ const sctp_sm_table_entry_t other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_N
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
}
#define TYPE_SCTP_EVENT_TIMEOUT_T4_RTO { \
/* SCTP_STATE_EMPTY */ \
{.fn = sctp_sf_bug, .name = "sctp_sf_bug"}, \
/* SCTP_STATE_CLOSED */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
/* SCTP_STATE_COOKIE_WAIT */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
/* SCTP_STATE_COOKIE_ECHOED */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
/* SCTP_STATE_ESTABLISHED */ \
{.fn = sctp_sf_t4_timer_expire, .name = "sctp_sf_t4_timer_expire"}, \
/* SCTP_STATE_SHUTDOWN_PENDING */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
/* SCTP_STATE_SHUTDOWN_SENT */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
/* SCTP_STATE_SHUTDOWN_RECEIVED */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
/* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
{.fn = sctp_sf_timer_ignore, .name = "sctp_sf_timer_ignore"}, \
}
#define TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD { \
/* SCTP_STATE_EMPTY */ \
{.fn = sctp_sf_bug, .name = "sctp_sf_bug"}, \
......@@ -817,6 +908,7 @@ const sctp_sm_table_entry_t timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STA
TYPE_SCTP_EVENT_TIMEOUT_T1_INIT,
TYPE_SCTP_EVENT_TIMEOUT_T2_SHUTDOWN,
TYPE_SCTP_EVENT_TIMEOUT_T3_RTX,
TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
TYPE_SCTP_EVENT_TIMEOUT_SACK,
......@@ -833,5 +925,10 @@ const sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t cid,
return &chunk_event_table[cid][state];
}
if (cid >= SCTP_CID_ADDIP_MIN && cid <= SCTP_CID_ADDIP_MAX) {
return &addip_chunk_event_table
[cid - SCTP_CID_ADDIP_MIN][state];
}
return &chunk_event_table_unknown[state];
}
net/sctp/socket.c
View file @ f6578e8d
......@@ -455,47 +455,6 @@ int sctp_bindx_add(struct sock *sk, struct sockaddr_storage *addrs, int addrcnt)
}
}
/* Notify the peer(s), assuming we have (an) association(s).
* FIXME: for UDP, we have a 1-1-many mapping amongst sk, ep and asoc,
* so we don't have to do much work on locating associations.
*
* However, when the separation of ep and asoc kicks in, especially
* for TCP style connection, it becomes n-1-n mapping. We will need
* to do more fine work. Until then, hold my peace.
* --xguo
*
* Really, I don't think that will be a problem. The bind()
* call on a socket will either know the endpoint
* (e.g. TCP-style listen()ing socket, or UDP-style socket),
* or exactly one association. The former case is EXACTLY
* what we have now. In the former case we know the
* association already. --piggy
*
* This code will be working on either a UDP style or a TCP style
* socket, or say either an endpoint or an association. The socket
* type verification code need to be added later before calling the
* ADDIP code.
* --daisy
*/
#ifdef CONFIG_IP_SCTP_ADDIP
/* Add these addresses to all associations on this endpoint. */
if (retval >= 0) {
struct list_head *pos;
struct sctp_endpoint *ep;
struct sctp_association *asoc;
ep = sctp_sk(sk)->ep;
list_for_each(pos, &ep->asocs) {
asoc = list_entry(pos, struct sctp_association, asocs);
sctp_addip_addr_config(asoc,
SCTP_PARAM_ADD_IP,
addrs, addrcnt);
}
}
#endif
return retval;
}
......@@ -591,28 +550,6 @@ int sctp_bindx_rem(struct sock *sk, struct sockaddr_storage *addrs, int addrcnt)
}
}
/*
* This code will be working on either a UDP style or a TCP style
* socket, * or say either an endpoint or an association. The socket
* type verification code need to be added later before calling the
* ADDIP code.
* --daisy
*/
#ifdef CONFIG_IP_SCTP_ADDIP
/* Remove these addresses from all associations on this endpoint. */
if (retval >= 0) {
struct list_head *pos;
struct sctp_endpoint *ep;
struct sctp_association *asoc;
ep = sctp_sk(sk)->ep;
list_for_each(pos, &ep->asocs) {
asoc = list_entry(pos, struct sctp_association, asocs);
sctp_addip_addr_config(asoc, SCTP_PARAM_DEL_IP,
addrs, addrcnt);
}
}
#endif
return retval;
}
......
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