mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 21:52:04 +00:00
92548ec2f1
There are 3 timers described in rfc8899#section-5.1.1: PROBE_TIMER, PMTU_RAISE_TIMER, CONFIRMATION_TIMER This patches adds a 'probe_timer' in transport, and it works as either PROBE_TIMER or PMTU_RAISE_TIMER. At most time, it works as PROBE_TIMER and expires every a 'probe_interval' time to send the HB probe packet. When transport pl enters COMPLETE state, it works as PMTU_RAISE_TIMER and expires in 'probe_interval * 30' time to go back to SEARCH state and do searching again. SCTP HB is an acknowledged packet, CONFIRMATION_TIMER is not needed. The timer will start when transport pl enters BASE state and stop when it enters DISABLED state. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
171 lines
3.8 KiB
C
171 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* SCTP kernel implementation
|
|
* (C) Copyright IBM Corp. 2001, 2004
|
|
* Copyright (c) 1999-2000 Cisco, Inc.
|
|
* Copyright (c) 1999-2001 Motorola, Inc.
|
|
* Copyright (c) 2001 Intel Corp.
|
|
*
|
|
* This file is part of the SCTP kernel implementation
|
|
*
|
|
* This file converts numerical ID value to alphabetical names for SCTP
|
|
* terms such as chunk type, parameter time, event type, etc.
|
|
*
|
|
* Please send any bug reports or fixes you make to the
|
|
* email address(es):
|
|
* lksctp developers <linux-sctp@vger.kernel.org>
|
|
*
|
|
* Written or modified by:
|
|
* La Monte H.P. Yarroll <piggy@acm.org>
|
|
* Karl Knutson <karl@athena.chicago.il.us>
|
|
* Xingang Guo <xingang.guo@intel.com>
|
|
* Jon Grimm <jgrimm@us.ibm.com>
|
|
* Daisy Chang <daisyc@us.ibm.com>
|
|
* Sridhar Samudrala <sri@us.ibm.com>
|
|
*/
|
|
|
|
#include <net/sctp/sctp.h>
|
|
|
|
/* These are printable forms of Chunk ID's from section 3.1. */
|
|
static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
|
|
"DATA",
|
|
"INIT",
|
|
"INIT_ACK",
|
|
"SACK",
|
|
"HEARTBEAT",
|
|
"HEARTBEAT_ACK",
|
|
"ABORT",
|
|
"SHUTDOWN",
|
|
"SHUTDOWN_ACK",
|
|
"ERROR",
|
|
"COOKIE_ECHO",
|
|
"COOKIE_ACK",
|
|
"ECN_ECNE",
|
|
"ECN_CWR",
|
|
"SHUTDOWN_COMPLETE",
|
|
};
|
|
|
|
/* Lookup "chunk type" debug name. */
|
|
const char *sctp_cname(const union sctp_subtype cid)
|
|
{
|
|
if (cid.chunk <= SCTP_CID_BASE_MAX)
|
|
return sctp_cid_tbl[cid.chunk];
|
|
|
|
switch (cid.chunk) {
|
|
case SCTP_CID_ASCONF:
|
|
return "ASCONF";
|
|
|
|
case SCTP_CID_ASCONF_ACK:
|
|
return "ASCONF_ACK";
|
|
|
|
case SCTP_CID_FWD_TSN:
|
|
return "FWD_TSN";
|
|
|
|
case SCTP_CID_AUTH:
|
|
return "AUTH";
|
|
|
|
case SCTP_CID_RECONF:
|
|
return "RECONF";
|
|
|
|
case SCTP_CID_I_DATA:
|
|
return "I_DATA";
|
|
|
|
case SCTP_CID_I_FWD_TSN:
|
|
return "I_FWD_TSN";
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return "unknown chunk";
|
|
}
|
|
|
|
/* These are printable forms of the states. */
|
|
const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
|
|
"STATE_CLOSED",
|
|
"STATE_COOKIE_WAIT",
|
|
"STATE_COOKIE_ECHOED",
|
|
"STATE_ESTABLISHED",
|
|
"STATE_SHUTDOWN_PENDING",
|
|
"STATE_SHUTDOWN_SENT",
|
|
"STATE_SHUTDOWN_RECEIVED",
|
|
"STATE_SHUTDOWN_ACK_SENT",
|
|
};
|
|
|
|
/* Events that could change the state of an association. */
|
|
const char *const sctp_evttype_tbl[] = {
|
|
"EVENT_T_unknown",
|
|
"EVENT_T_CHUNK",
|
|
"EVENT_T_TIMEOUT",
|
|
"EVENT_T_OTHER",
|
|
"EVENT_T_PRIMITIVE"
|
|
};
|
|
|
|
/* Return value of a state function */
|
|
const char *const sctp_status_tbl[] = {
|
|
"DISPOSITION_DISCARD",
|
|
"DISPOSITION_CONSUME",
|
|
"DISPOSITION_NOMEM",
|
|
"DISPOSITION_DELETE_TCB",
|
|
"DISPOSITION_ABORT",
|
|
"DISPOSITION_VIOLATION",
|
|
"DISPOSITION_NOT_IMPL",
|
|
"DISPOSITION_ERROR",
|
|
"DISPOSITION_BUG"
|
|
};
|
|
|
|
/* Printable forms of primitives */
|
|
static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
|
|
"PRIMITIVE_ASSOCIATE",
|
|
"PRIMITIVE_SHUTDOWN",
|
|
"PRIMITIVE_ABORT",
|
|
"PRIMITIVE_SEND",
|
|
"PRIMITIVE_REQUESTHEARTBEAT",
|
|
"PRIMITIVE_ASCONF",
|
|
};
|
|
|
|
/* Lookup primitive debug name. */
|
|
const char *sctp_pname(const union sctp_subtype id)
|
|
{
|
|
if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
|
|
return sctp_primitive_tbl[id.primitive];
|
|
return "unknown_primitive";
|
|
}
|
|
|
|
static const char *const sctp_other_tbl[] = {
|
|
"NO_PENDING_TSN",
|
|
"ICMP_PROTO_UNREACH",
|
|
};
|
|
|
|
/* Lookup "other" debug name. */
|
|
const char *sctp_oname(const union sctp_subtype id)
|
|
{
|
|
if (id.other <= SCTP_EVENT_OTHER_MAX)
|
|
return sctp_other_tbl[id.other];
|
|
return "unknown 'other' event";
|
|
}
|
|
|
|
static const char *const sctp_timer_tbl[] = {
|
|
"TIMEOUT_NONE",
|
|
"TIMEOUT_T1_COOKIE",
|
|
"TIMEOUT_T1_INIT",
|
|
"TIMEOUT_T2_SHUTDOWN",
|
|
"TIMEOUT_T3_RTX",
|
|
"TIMEOUT_T4_RTO",
|
|
"TIMEOUT_T5_SHUTDOWN_GUARD",
|
|
"TIMEOUT_HEARTBEAT",
|
|
"TIMEOUT_RECONF",
|
|
"TIMEOUT_PROBE",
|
|
"TIMEOUT_SACK",
|
|
"TIMEOUT_AUTOCLOSE",
|
|
};
|
|
|
|
/* Lookup timer debug name. */
|
|
const char *sctp_tname(const union sctp_subtype id)
|
|
{
|
|
BUILD_BUG_ON(SCTP_EVENT_TIMEOUT_MAX + 1 != ARRAY_SIZE(sctp_timer_tbl));
|
|
|
|
if (id.timeout < ARRAY_SIZE(sctp_timer_tbl))
|
|
return sctp_timer_tbl[id.timeout];
|
|
return "unknown_timer";
|
|
}
|