void *event_arg,
sctp_disposition_t status,
sctp_cmd_seq_t *commands,
- int gfp);
+ gfp_t gfp);
static int sctp_side_effects(sctp_event_t event_type, sctp_subtype_t subtype,
sctp_state_t state,
struct sctp_endpoint *ep,
void *event_arg,
sctp_disposition_t status,
sctp_cmd_seq_t *commands,
- int gfp);
+ gfp_t gfp);
/********************************************************************
* Helper functions
{
__u32 ctsn, max_tsn_seen;
struct sctp_chunk *sack;
+ struct sctp_transport *trans = asoc->peer.last_data_from;
int error = 0;
- if (force)
+ if (force ||
+ (!trans && (asoc->param_flags & SPP_SACKDELAY_DISABLE)) ||
+ (trans && (trans->param_flags & SPP_SACKDELAY_DISABLE)))
asoc->peer.sack_needed = 1;
ctsn = sctp_tsnmap_get_ctsn(&asoc->peer.tsn_map);
if (!asoc->peer.sack_needed) {
/* We will need a SACK for the next packet. */
asoc->peer.sack_needed = 1;
- goto out;
+
+ /* Set the SACK delay timeout based on the
+ * SACK delay for the last transport
+ * data was received from, or the default
+ * for the association.
+ */
+ if (trans)
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
+ trans->sackdelay;
+ else
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
+ asoc->sackdelay;
+
+ /* Restart the SACK timer. */
+ sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
+ SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
} else {
if (asoc->a_rwnd > asoc->rwnd)
asoc->a_rwnd = asoc->rwnd;
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
}
-out:
+
return error;
nomem:
error = -ENOMEM;
NULL,
sctp_generate_t4_rto_event,
sctp_generate_t5_shutdown_guard_event,
- sctp_generate_heartbeat_event,
+ NULL,
sctp_generate_sack_event,
sctp_generate_autoclose_event,
};
*/
asoc->overall_error_count++;
- if (transport->active &&
- (transport->error_count++ >= transport->max_retrans)) {
- SCTP_DEBUG_PRINTK("transport_strike: transport "
- "IP:%d.%d.%d.%d failed.\n",
- NIPQUAD(transport->ipaddr.v4.sin_addr));
+ if (transport->state != SCTP_INACTIVE &&
+ (transport->error_count++ >= transport->pathmaxrxt)) {
+ SCTP_DEBUG_PRINTK_IPADDR("transport_strike:association %p",
+ " transport IP: port:%d failed.\n",
+ asoc,
+ (&transport->ipaddr),
+ transport->ipaddr.v4.sin_port);
sctp_assoc_control_transport(asoc, transport,
SCTP_TRANSPORT_DOWN,
SCTP_FAILED_THRESHOLD);
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
SCTP_STATE(SCTP_STATE_CLOSED));
- /* Set sk_err to ECONNRESET on a 1-1 style socket. */
- if (!sctp_style(asoc->base.sk, UDP))
- asoc->base.sk->sk_err = ECONNRESET;
-
/* SEND_FAILED sent later when cleaning up the association. */
asoc->outqueue.error = error;
sctp_add_cmd_sf(commands, SCTP_CMD_DELETE_TCB, SCTP_NULL());
static int sctp_cmd_process_init(sctp_cmd_seq_t *commands,
struct sctp_association *asoc,
struct sctp_chunk *chunk,
- sctp_init_chunk_t *peer_init, int gfp)
+ sctp_init_chunk_t *peer_init,
+ gfp_t gfp)
{
int error;
/* Mark the destination transport address as active if it is not so
* marked.
*/
- if (!t->active)
+ if (t->state == SCTP_INACTIVE)
sctp_assoc_control_transport(asoc, t, SCTP_TRANSPORT_UP,
SCTP_HEARTBEAT_SUCCESS);
asoc->state = state;
+ SCTP_DEBUG_PRINTK("sctp_cmd_new_state: asoc %p[%s]\n",
+ asoc, sctp_state_tbl[state]);
+
if (sctp_style(sk, TCP)) {
- /* Change the sk->sk_state of a TCP-style socket that has
+ /* Change the sk->sk_state of a TCP-style socket that has
* sucessfully completed a connect() call.
*/
if (sctp_state(asoc, ESTABLISHED) && sctp_sstate(sk, CLOSED))
sk->sk_shutdown |= RCV_SHUTDOWN;
}
+ if (sctp_state(asoc, COOKIE_WAIT)) {
+ /* Reset init timeouts since they may have been
+ * increased due to timer expirations.
+ */
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT] =
+ asoc->rto_initial;
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE] =
+ asoc->rto_initial;
+ }
+
if (sctp_state(asoc, ESTABLISHED) ||
sctp_state(asoc, CLOSED) ||
sctp_state(asoc, SHUTDOWN_RECEIVED)) {
return;
}
+/* Helper function to set sk_err on a 1-1 style socket. */
+static void sctp_cmd_set_sk_err(struct sctp_association *asoc, int error)
+{
+ struct sock *sk = asoc->base.sk;
+
+ if (!sctp_style(sk, UDP))
+ sk->sk_err = error;
+}
+
/* 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.
struct sctp_endpoint *ep,
struct sctp_association *asoc,
void *event_arg,
- int gfp)
+ gfp_t gfp)
{
sctp_cmd_seq_t commands;
const sctp_sm_table_entry_t *state_fn;
void *event_arg,
sctp_disposition_t status,
sctp_cmd_seq_t *commands,
- int gfp)
+ gfp_t gfp)
{
int error;
void *event_arg,
sctp_disposition_t status,
sctp_cmd_seq_t *commands,
- int gfp)
+ gfp_t gfp)
{
int error = 0;
int force;
* to be executed only during failed attempts of
* association establishment.
*/
- if ((asoc->peer.retran_path !=
- asoc->peer.primary_path) &&
- (asoc->counters[SCTP_COUNTER_INIT_ERROR] > 0)) {
- sctp_add_cmd_sf(commands,
+ if ((asoc->peer.retran_path !=
+ asoc->peer.primary_path) &&
+ (asoc->init_err_counter > 0)) {
+ sctp_add_cmd_sf(commands,
SCTP_CMD_FORCE_PRIM_RETRAN,
SCTP_NULL());
}
case SCTP_CMD_TIMER_START:
timer = &asoc->timers[cmd->obj.to];
timeout = asoc->timeouts[cmd->obj.to];
- if (!timeout)
- BUG();
+ BUG_ON(!timeout);
timer->expires = jiffies + timeout;
sctp_association_hold(asoc);
sctp_association_put(asoc);
break;
+ case SCTP_CMD_INIT_CHOOSE_TRANSPORT:
+ chunk = cmd->obj.ptr;
+ t = sctp_assoc_choose_init_transport(asoc);
+ asoc->init_last_sent_to = t;
+ chunk->transport = t;
+ t->init_sent_count++;
+ break;
+
case SCTP_CMD_INIT_RESTART:
/* Do the needed accounting and updates
* associated with restarting an initialization
- * timer.
+ * timer. Only multiply the timeout by two if
+ * all transports have been tried at the current
+ * timeout.
*/
- asoc->counters[SCTP_COUNTER_INIT_ERROR]++;
- asoc->timeouts[cmd->obj.to] *= 2;
- if (asoc->timeouts[cmd->obj.to] >
+ t = asoc->init_last_sent_to;
+ asoc->init_err_counter++;
+
+ if (t->init_sent_count > (asoc->init_cycle + 1)) {
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT] *= 2;
+ if (asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT] >
+ asoc->max_init_timeo) {
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT] =
+ asoc->max_init_timeo;
+ }
+ asoc->init_cycle++;
+ SCTP_DEBUG_PRINTK(
+ "T1 INIT Timeout adjustment"
+ " init_err_counter: %d"
+ " cycle: %d"
+ " timeout: %ld\n",
+ asoc->init_err_counter,
+ asoc->init_cycle,
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_INIT]);
+ }
+
+ sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
+ SCTP_TO(SCTP_EVENT_TIMEOUT_T1_INIT));
+ break;
+
+ case SCTP_CMD_COOKIEECHO_RESTART:
+ /* Do the needed accounting and updates
+ * associated with restarting an initialization
+ * timer. Only multiply the timeout by two if
+ * all transports have been tried at the current
+ * timeout.
+ */
+ asoc->init_err_counter++;
+
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE] *= 2;
+ if (asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE] >
asoc->max_init_timeo) {
- asoc->timeouts[cmd->obj.to] =
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE] =
asoc->max_init_timeo;
}
+ SCTP_DEBUG_PRINTK(
+ "T1 COOKIE Timeout adjustment"
+ " init_err_counter: %d"
+ " timeout: %ld\n",
+ asoc->init_err_counter,
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_T1_COOKIE]);
/* If we've sent any data bundled with
* COOKIE-ECHO we need to resend.
sctp_add_cmd_sf(commands,
SCTP_CMD_TIMER_RESTART,
- SCTP_TO(cmd->obj.to));
+ SCTP_TO(SCTP_EVENT_TIMEOUT_T1_COOKIE));
break;
case SCTP_CMD_INIT_FAILED:
subtype, chunk, cmd->obj.u32);
break;
- case SCTP_CMD_COUNTER_INC:
- asoc->counters[cmd->obj.counter]++;
+ case SCTP_CMD_INIT_COUNTER_INC:
+ asoc->init_err_counter++;
break;
- case SCTP_CMD_COUNTER_RESET:
- asoc->counters[cmd->obj.counter] = 0;
+ case SCTP_CMD_INIT_COUNTER_RESET:
+ asoc->init_err_counter = 0;
+ asoc->init_cycle = 0;
break;
case SCTP_CMD_REPORT_DUP:
local_cork = 0;
asoc->peer.retran_path = t;
break;
+ case SCTP_CMD_SET_SK_ERR:
+ sctp_cmd_set_sk_err(asoc, cmd->obj.error);
+ break;
default:
printk(KERN_WARNING "Impossible command: %u, %p\n",
cmd->verb, cmd->obj.ptr);
git://git.onelab.eu / linux-2.6.git / blobdiff