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[SCTP] sctp_connectx() API support

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Implements sctp_connectx() as defined in the SCTP sockets API draft by
tunneling the request through a setsockopt().

Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frank Filz 2005-06-20 13:14:57 -07:00 • committed by David S. Miller
parent 8b22c249e7
commit 3f7a87d2fa
16 changed files with 677 additions and 260 deletions
Download patch file Download diff file Expand all files Collapse all files

148
net/sctp/sm_statefuns.c
View file

@ -533,6 +533,9 @@ sctp_disposition_t sctp_sf_do_5_1C_ack(const struct sctp_endpoint *ep,
sctp_add_cmd_sf(commands, SCTP_CMD_PEER_INIT,
SCTP_PEER_INIT(initchunk));
/* Reset init error count upon receipt of INIT-ACK. */
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_COUNTER_RESET, SCTP_NULL());
/* 5.1 C) "A" shall stop the T1-init timer and leave
* COOKIE-WAIT state. "A" shall then ... start the T1-cookie
* timer, and enter the COOKIE-ECHOED state.
@ -775,8 +778,7 @@ sctp_disposition_t sctp_sf_do_5_1E_ca(const struct sctp_endpoint *ep,
* from the COOKIE-ECHOED state to the COOKIE-WAIT
* state is performed.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_COUNTER_RESET,
SCTP_COUNTER(SCTP_COUNTER_INIT_ERROR));
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_COUNTER_RESET, SCTP_NULL());
/* RFC 2960 5.1 Normal Establishment of an Association
*
@ -1019,10 +1021,22 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const struct sctp_endpoint *ep,
link = sctp_assoc_lookup_paddr(asoc, &from_addr);
/* This should never happen, but lets log it if so. */
if (!link) {
printk(KERN_WARNING
"%s: Could not find address %d.%d.%d.%d\n",
__FUNCTION__, NIPQUAD(from_addr.v4.sin_addr));
if (unlikely(!link)) {
if (from_addr.sa.sa_family == AF_INET6) {
printk(KERN_WARNING
"%s association %p could not find address "
"%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
__FUNCTION__,
asoc,
NIP6(from_addr.v6.sin6_addr));
} else {
printk(KERN_WARNING
"%s association %p could not find address "
"%u.%u.%u.%u\n",
__FUNCTION__,
asoc,
NIPQUAD(from_addr.v4.sin_addr.s_addr));
}
return SCTP_DISPOSITION_DISCARD;
}
@ -2095,9 +2109,7 @@ static sctp_disposition_t sctp_sf_do_5_2_6_stale(const struct sctp_endpoint *ep,
sctp_errhdr_t *err;
struct sctp_chunk *reply;
struct sctp_bind_addr *bp;
int attempts;
attempts = asoc->counters[SCTP_COUNTER_INIT_ERROR] + 1;
int attempts = asoc->init_err_counter + 1;
if (attempts >= asoc->max_init_attempts) {
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_FAILED,
@ -2157,8 +2169,7 @@ static sctp_disposition_t sctp_sf_do_5_2_6_stale(const struct sctp_endpoint *ep,
/* Cast away the const modifier, as we want to just
* rerun it through as a sideffect.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_COUNTER_INC,
SCTP_COUNTER(SCTP_COUNTER_INIT_ERROR));
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_COUNTER_INC, SCTP_NULL());
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T1_COOKIE));
@ -2281,8 +2292,7 @@ sctp_disposition_t sctp_sf_cookie_wait_abort(const struct sctp_endpoint *ep,
if (len >= sizeof(struct sctp_chunkhdr) + sizeof(struct sctp_errhdr))
error = ((sctp_errhdr_t *)chunk->skb->data)->cause;
sctp_stop_t1_and_abort(commands, error);
return SCTP_DISPOSITION_ABORT;
return sctp_stop_t1_and_abort(commands, error, asoc, chunk->transport);
}
/*
@ -2294,8 +2304,8 @@ sctp_disposition_t sctp_sf_cookie_wait_icmp_abort(const struct sctp_endpoint *ep
void *arg,
sctp_cmd_seq_t *commands)
{
sctp_stop_t1_and_abort(commands, SCTP_ERROR_NO_ERROR);
return SCTP_DISPOSITION_ABORT;
return sctp_stop_t1_and_abort(commands, SCTP_ERROR_NO_ERROR, asoc,
(struct sctp_transport *)arg);
}
/*
@ -2318,8 +2328,12 @@ sctp_disposition_t sctp_sf_cookie_echoed_abort(const struct sctp_endpoint *ep,
*
* This is common code called by several sctp_sf_*_abort() functions above.
*/
void sctp_stop_t1_and_abort(sctp_cmd_seq_t *commands, __u16 error)
sctp_disposition_t sctp_stop_t1_and_abort(sctp_cmd_seq_t *commands,
__u16 error,
const struct sctp_association *asoc,
struct sctp_transport *transport)
{
SCTP_DEBUG_PRINTK("ABORT received (INIT).\n");
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
SCTP_STATE(SCTP_STATE_CLOSED));
SCTP_INC_STATS(SCTP_MIB_ABORTEDS);
@ -2328,6 +2342,7 @@ void sctp_stop_t1_and_abort(sctp_cmd_seq_t *commands, __u16 error)
/* CMD_INIT_FAILED will DELETE_TCB. */
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_FAILED,
SCTP_U32(error));
return SCTP_DISPOSITION_ABORT;
}
/*
@ -3805,6 +3820,10 @@ sctp_disposition_t sctp_sf_do_prm_asoc(const struct sctp_endpoint *ep,
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC,
SCTP_ASOC((struct sctp_association *) asoc));
/* Choose transport for INIT. */
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_CHOOSE_TRANSPORT,
SCTP_CHUNK(repl));
/* After sending the INIT, "A" starts the T1-init timer and
* enters the COOKIE-WAIT state.
*/
@ -4589,7 +4608,7 @@ sctp_disposition_t sctp_sf_do_6_2_sack(const struct sctp_endpoint *ep,
}
/*
* sctp_sf_t1_timer_expire
* sctp_sf_t1_init_timer_expire
*
* Section: 4 Note: 2
* Verification Tag:
@ -4603,7 +4622,59 @@ sctp_disposition_t sctp_sf_do_6_2_sack(const struct sctp_endpoint *ep,
* endpoint MUST abort the initialization process and report the
* error to SCTP user.
*
* 3) If the T1-cookie timer expires, the endpoint MUST retransmit
* Outputs
* (timers, events)
*
*/
sctp_disposition_t sctp_sf_t1_init_timer_expire(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 *repl = NULL;
struct sctp_bind_addr *bp;
int attempts = asoc->init_err_counter + 1;
SCTP_DEBUG_PRINTK("Timer T1 expired (INIT).\n");
if (attempts < asoc->max_init_attempts) {
bp = (struct sctp_bind_addr *) &asoc->base.bind_addr;
repl = sctp_make_init(asoc, bp, GFP_ATOMIC, 0);
if (!repl)
return SCTP_DISPOSITION_NOMEM;
/* Choose transport for INIT. */
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_CHOOSE_TRANSPORT,
SCTP_CHUNK(repl));
/* Issue a sideeffect to do the needed accounting. */
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_RESTART,
SCTP_TO(SCTP_EVENT_TIMEOUT_T1_INIT));
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
} else {
SCTP_DEBUG_PRINTK("Giving up on INIT, attempts: %d"
" max_init_attempts: %d\n",
attempts, asoc->max_init_attempts);
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_FAILED,
SCTP_U32(SCTP_ERROR_NO_ERROR));
return SCTP_DISPOSITION_DELETE_TCB;
}
return SCTP_DISPOSITION_CONSUME;
}
/*
* sctp_sf_t1_cookie_timer_expire
*
* Section: 4 Note: 2
* Verification Tag:
* Inputs
* (endpoint, asoc)
*
* RFC 2960 Section 4 Notes
* 3) If the T1-cookie timer expires, the endpoint MUST retransmit
* COOKIE ECHO and re-start the T1-cookie timer without changing
* state. This MUST be repeated up to 'Max.Init.Retransmits' times.
* After that, the endpoint MUST abort the initialization process and
@ -4613,46 +4684,26 @@ sctp_disposition_t sctp_sf_do_6_2_sack(const struct sctp_endpoint *ep,
* (timers, events)
*
*/
sctp_disposition_t sctp_sf_t1_timer_expire(const struct sctp_endpoint *ep,
sctp_disposition_t sctp_sf_t1_cookie_timer_expire(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 *repl;
struct sctp_bind_addr *bp;
sctp_event_timeout_t timer = (sctp_event_timeout_t) arg;
int timeout;
int attempts;
struct sctp_chunk *repl = NULL;
int attempts = asoc->init_err_counter + 1;
timeout = asoc->timeouts[timer];
attempts = asoc->counters[SCTP_COUNTER_INIT_ERROR] + 1;
repl = NULL;
SCTP_DEBUG_PRINTK("Timer T1 expired.\n");
SCTP_DEBUG_PRINTK("Timer T1 expired (COOKIE-ECHO).\n");
if (attempts < asoc->max_init_attempts) {
switch (timer) {
case SCTP_EVENT_TIMEOUT_T1_INIT:
bp = (struct sctp_bind_addr *) &asoc->base.bind_addr;
repl = sctp_make_init(asoc, bp, GFP_ATOMIC, 0);
break;
case SCTP_EVENT_TIMEOUT_T1_COOKIE:
repl = sctp_make_cookie_echo(asoc, NULL);
break;
default:
BUG();
break;
};
repl = sctp_make_cookie_echo(asoc, NULL);
if (!repl)
goto nomem;
return SCTP_DISPOSITION_NOMEM;
/* Issue a sideeffect to do the needed accounting. */
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_RESTART,
SCTP_TO(timer));
sctp_add_cmd_sf(commands, SCTP_CMD_COOKIEECHO_RESTART,
SCTP_TO(SCTP_EVENT_TIMEOUT_T1_COOKIE));
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
} else {
sctp_add_cmd_sf(commands, SCTP_CMD_INIT_FAILED,
@ -4661,9 +4712,6 @@ sctp_disposition_t sctp_sf_t1_timer_expire(const struct sctp_endpoint *ep,
}
return SCTP_DISPOSITION_CONSUME;
nomem:
return SCTP_DISPOSITION_NOMEM;
}
/* RFC2960 9.2 If the timer expires, the endpoint must re-send the SHUTDOWN