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author | Wei Yongjun <yjwei@cn.fujitsu.com> | 2011-05-29 23:23:36 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2011-05-31 22:29:17 (GMT) |
commit | a000c01e60e40e15304ffe48fff051d17a7bea91 (patch) | |
tree | 429060980f87287a3df70d8d286b73d6f1985cc8 | |
parent | b10cec8a4e8167075b9e1ff3f05419769e7f381a (diff) | |
download | linux-fsl-qoriq-a000c01e60e40e15304ffe48fff051d17a7bea91.tar.xz |
sctp: stop pending timers and purge queues when peer restart asoc
If the peer restart the asoc, we should not only fail any unsent/unacked
data, but also stop the T3-rtx, SACK, T4-rto timers, and teardown ASCONF
queues.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | include/net/sctp/command.h | 1 | ||||
-rw-r--r-- | include/net/sctp/structs.h | 2 | ||||
-rw-r--r-- | net/sctp/associola.c | 23 | ||||
-rw-r--r-- | net/sctp/sm_sideeffect.c | 3 | ||||
-rw-r--r-- | net/sctp/sm_statefuns.c | 14 |
5 files changed, 31 insertions, 12 deletions
diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h index 2b44764..dd6847e 100644 --- a/include/net/sctp/command.h +++ b/include/net/sctp/command.h @@ -107,6 +107,7 @@ typedef enum { SCTP_CMD_UPDATE_INITTAG, /* Update peer inittag */ SCTP_CMD_SEND_MSG, /* Send the whole use message */ SCTP_CMD_SEND_NEXT_ASCONF, /* Send the next ASCONF after ACK */ + SCTP_CMD_PURGE_ASCONF_QUEUE, /* Purge all asconf queues.*/ SCTP_CMD_LAST } sctp_verb_t; diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 795f488..7df327a 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1993,7 +1993,7 @@ void sctp_assoc_clean_asconf_ack_cache(const struct sctp_association *asoc); struct sctp_chunk *sctp_assoc_lookup_asconf_ack( const struct sctp_association *asoc, __be32 serial); - +void sctp_asconf_queue_teardown(struct sctp_association *asoc); int sctp_cmp_addr_exact(const union sctp_addr *ss1, const union sctp_addr *ss2); diff --git a/net/sctp/associola.c b/net/sctp/associola.c index 525f97c..4a62888 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -444,15 +444,7 @@ void sctp_association_free(struct sctp_association *asoc) asoc->peer.transport_count = 0; - /* Free any cached ASCONF_ACK chunk. */ - sctp_assoc_free_asconf_acks(asoc); - - /* Free the ASCONF queue. */ - sctp_assoc_free_asconf_queue(asoc); - - /* Free any cached ASCONF chunk. */ - if (asoc->addip_last_asconf) - sctp_chunk_free(asoc->addip_last_asconf); + sctp_asconf_queue_teardown(asoc); /* AUTH - Free the endpoint shared keys */ sctp_auth_destroy_keys(&asoc->endpoint_shared_keys); @@ -1646,3 +1638,16 @@ struct sctp_chunk *sctp_assoc_lookup_asconf_ack( return NULL; } + +void sctp_asconf_queue_teardown(struct sctp_association *asoc) +{ + /* Free any cached ASCONF_ACK chunk. */ + sctp_assoc_free_asconf_acks(asoc); + + /* Free the ASCONF queue. */ + sctp_assoc_free_asconf_queue(asoc); + + /* Free any cached ASCONF chunk. */ + if (asoc->addip_last_asconf) + sctp_chunk_free(asoc->addip_last_asconf); +} diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index d612ca1..534c2e5 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -1670,6 +1670,9 @@ static int sctp_cmd_interpreter(sctp_event_t event_type, case SCTP_CMD_SEND_NEXT_ASCONF: sctp_cmd_send_asconf(asoc); break; + case SCTP_CMD_PURGE_ASCONF_QUEUE: + sctp_asconf_queue_teardown(asoc); + break; default: pr_warn("Impossible command: %u, %p\n", cmd->verb, cmd->obj.ptr); diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 7f4a4f8..a297283 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -1718,11 +1718,21 @@ static sctp_disposition_t sctp_sf_do_dupcook_a(const struct sctp_endpoint *ep, return SCTP_DISPOSITION_CONSUME; } - /* For now, fail any unsent/unacked data. Consider the optional - * choice of resending of this data. + /* For now, stop pending T3-rtx and SACK timers, fail any unsent/unacked + * data. Consider the optional choice of resending of this data. */ + sctp_add_cmd_sf(commands, SCTP_CMD_T3_RTX_TIMERS_STOP, SCTP_NULL()); + sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP, + SCTP_TO(SCTP_EVENT_TIMEOUT_SACK)); sctp_add_cmd_sf(commands, SCTP_CMD_PURGE_OUTQUEUE, SCTP_NULL()); + /* Stop pending T4-rto timer, teardown ASCONF queue, ASCONF-ACK queue + * and ASCONF-ACK cache. + */ + sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP, + SCTP_TO(SCTP_EVENT_TIMEOUT_T4_RTO)); + sctp_add_cmd_sf(commands, SCTP_CMD_PURGE_ASCONF_QUEUE, SCTP_NULL()); + repl = sctp_make_cookie_ack(new_asoc, chunk); if (!repl) goto nomem; |