hbinfo.param_hdr.length = htons(sizeof(sctp_sender_hb_info_t));
hbinfo.daddr = transport->ipaddr;
hbinfo.sent_at = jiffies;
+ hbinfo.hb_nonce = transport->hb_nonce;
/* Send a heartbeat to our peer. */
paylen = sizeof(sctp_sender_hb_info_t);
return SCTP_DISPOSITION_DISCARD;
}
+ /* Validate the 64-bit random nonce. */
+ if (hbinfo->hb_nonce != link->hb_nonce)
+ return SCTP_DISPOSITION_DISCARD;
+
max_interval = link->hbinterval + link->rto;
/* Check if the timestamp looks valid. */
break;
case SCTP_IERROR_HIGH_TSN:
case SCTP_IERROR_BAD_STREAM:
+ SCTP_INC_STATS(SCTP_MIB_IN_DATA_CHUNK_DISCARDS);
goto discard_noforce;
case SCTP_IERROR_DUP_TSN:
case SCTP_IERROR_IGNORE_TSN:
+ SCTP_INC_STATS(SCTP_MIB_IN_DATA_CHUNK_DISCARDS);
goto discard_force;
case SCTP_IERROR_NO_DATA:
goto consume;
void *arg,
sctp_cmd_seq_t *commands)
{
+ SCTP_INC_STATS(SCTP_MIB_IN_PKT_DISCARDS);
sctp_add_cmd_sf(commands, SCTP_CMD_DISCARD_PACKET, SCTP_NULL());
return SCTP_DISPOSITION_CONSUME;
* from its upper layer, but retransmits data to the far end
* if necessary to fill gaps.
*/
- struct msghdr *msg = arg;
- struct sctp_chunk *abort;
+ struct sctp_chunk *abort = arg;
sctp_disposition_t retval;
retval = SCTP_DISPOSITION_CONSUME;
- /* Generate ABORT chunk to send the peer. */
- abort = sctp_make_abort_user(asoc, NULL, msg);
- if (!abort)
- retval = SCTP_DISPOSITION_NOMEM;
- else
- sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
/* Even if we can't send the ABORT due to low memory delete the
* TCB. This is a departure from our typical NOMEM handling.
void *arg,
sctp_cmd_seq_t *commands)
{
- struct msghdr *msg = arg;
- struct sctp_chunk *abort;
+ struct sctp_chunk *abort = arg;
sctp_disposition_t retval;
/* Stop T1-init timer */
SCTP_TO(SCTP_EVENT_TIMEOUT_T1_INIT));
retval = SCTP_DISPOSITION_CONSUME;
- /* Generate ABORT chunk to send the peer */
- abort = sctp_make_abort_user(asoc, NULL, msg);
- if (!abort)
- retval = SCTP_DISPOSITION_NOMEM;
- else
- sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
SCTP_STATE(SCTP_STATE_CLOSED));
{
struct sctp_transport *transport = arg;
+ SCTP_INC_STATS(SCTP_MIB_T3_RTX_EXPIREDS);
+
if (asoc->overall_error_count >= asoc->max_retrans) {
sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
SCTP_ERROR(ETIMEDOUT));
void *arg,
sctp_cmd_seq_t *commands)
{
+ SCTP_INC_STATS(SCTP_MIB_DELAY_SACK_EXPIREDS);
sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_FORCE());
return SCTP_DISPOSITION_CONSUME;
}
int attempts = asoc->init_err_counter + 1;
SCTP_DEBUG_PRINTK("Timer T1 expired (INIT).\n");
+ SCTP_INC_STATS(SCTP_MIB_T1_INIT_EXPIREDS);
if (attempts <= asoc->max_init_attempts) {
bp = (struct sctp_bind_addr *) &asoc->base.bind_addr;
int attempts = asoc->init_err_counter + 1;
SCTP_DEBUG_PRINTK("Timer T1 expired (COOKIE-ECHO).\n");
+ SCTP_INC_STATS(SCTP_MIB_T1_COOKIE_EXPIREDS);
if (attempts <= asoc->max_init_attempts) {
repl = sctp_make_cookie_echo(asoc, NULL);
struct sctp_chunk *reply = NULL;
SCTP_DEBUG_PRINTK("Timer T2 expired.\n");
+ SCTP_INC_STATS(SCTP_MIB_T2_SHUTDOWN_EXPIREDS);
+
if (asoc->overall_error_count >= asoc->max_retrans) {
sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
SCTP_ERROR(ETIMEDOUT));
struct sctp_chunk *chunk = asoc->addip_last_asconf;
struct sctp_transport *transport = chunk->transport;
+ SCTP_INC_STATS(SCTP_MIB_T4_RTO_EXPIREDS);
+
/* ADDIP 4.1 B1) Increment the error counters and perform path failure
* detection on the appropriate destination address as defined in
* RFC2960 [5] section 8.1 and 8.2.
struct sctp_chunk *reply = NULL;
SCTP_DEBUG_PRINTK("Timer T5 expired.\n");
+ SCTP_INC_STATS(SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS);
reply = sctp_make_abort(asoc, NULL, 0);
if (!reply)
{
int disposition;
+ SCTP_INC_STATS(SCTP_MIB_AUTOCLOSE_EXPIREDS);
+
/* From 9.2 Shutdown of an Association
* Upon receipt of the SHUTDOWN primitive from its upper
* layer, the endpoint enters SHUTDOWN-PENDING state and
datalen -= sizeof(sctp_data_chunk_t);
deliver = SCTP_CMD_CHUNK_ULP;
- chunk->data_accepted = 1;
/* Think about partial delivery. */
if ((datalen >= asoc->rwnd) && (!asoc->ulpq.pd_mode)) {
* seems a bit troublesome in that frag_point varies based on
* PMTU. In cases, such as loopback, this might be a rather
* large spill over.
+ * NOTE: If we have a full receive buffer here, we only renege if
+ * our receiver can still make progress without the tsn being
+ * received. We do this because in the event that the associations
+ * receive queue is empty we are filling a leading gap, and since
+ * reneging moves the gap to the end of the tsn stream, we are likely
+ * to stall again very shortly. Avoiding the renege when we fill a
+ * leading gap is a good heuristic for avoiding such steady state
+ * stalls.
*/
if (!asoc->rwnd || asoc->rwnd_over ||
(datalen > asoc->rwnd + asoc->frag_point) ||
- rcvbuf_over) {
+ (rcvbuf_over && (!skb_queue_len(&sk->sk_receive_queue)))) {
/* If this is the next TSN, consider reneging to make
* room. Note: Playing nice with a confused sender. A
if (SCTP_CMD_CHUNK_ULP == deliver)
sctp_add_cmd_sf(commands, SCTP_CMD_REPORT_TSN, SCTP_U32(tsn));
+ chunk->data_accepted = 1;
+
/* Note: Some chunks may get overcounted (if we drop) or overcounted
* if we renege and the chunk arrives again.
*/
projects / powerpc.git / blobdiff