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Extraneous tokens were not being rejected on token retransmits

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that occurred during configuration changes.  The result was bad
behavior, especially with larger rings.  Also cleaned up the
token retransmit timer to be deleted if necessary.

(Logical change 1.37)


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@110 fd59a12c-fef9-0310-b244-a6a79926bd2f
This commit is contained in:
Steven Dake 2004-07-13 17:19:43 +00:00
parent edb6179338
commit 7f49b68e27
1 changed files with 59 additions and 31 deletions
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90
exec/gmi.c
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@ -77,7 +77,7 @@
#define MISSING_MCAST_WINDOW 64
#define TIMEOUT_STATE_GATHER 100
#define TIMEOUT_TOKEN 100
#define TIMEOUT_TOKEN_RETRANSMIT 100
#define TIMEOUT_TOKEN_RETRANSMIT 50
#define TIMEOUT_STATE_COMMIT 100
#define MAX_MEMBERS 16
#define HOLE_LIST_MAX MISSING_MCAST_WINDOW
@ -385,7 +385,7 @@ static int orf_token_mcast (struct orf_token *orf_token,
static void queues_pend_delv_memb_new (void);
static void calculate_group_arut (struct orf_token *orf_token);
static int messages_free (int group_arut);
static int orf_token_send (struct orf_token *orf_token);
static int orf_token_send (struct orf_token *orf_token, int reset_timer);
struct message_handlers gmi_message_handlers = {
5,
@ -1528,7 +1528,8 @@ static int orf_fcc_allowed (struct orf_token *token)
void timer_function_token_retransmit_timeout (void *data)
{
gmi_log_printf (gmi_log_level_warning, "Token being retransmitted.\n");
orf_token_send (&orf_token_retransmit);
orf_token_send (&orf_token_retransmit, 0);
}
void timer_function_form_token_timeout (void *data)
@ -1559,7 +1560,9 @@ void orf_timer_function_token_timeout (void *data)
case MEMB_STATE_GATHER:
case MEMB_STATE_COMMIT:
gmi_log_printf (gmi_log_level_warning, "Token loss in GATHER or COMMIT.\n");
memb_conf_id.rep.s_addr = memb_local_sockaddr_in.sin_addr.s_addr;
memb_list_entries = 1;
break;
case MEMB_STATE_EVS:
@ -1578,16 +1581,19 @@ void orf_timer_function_token_timeout (void *data)
* Send orf_token to next member (requires orf_token)
*/
static int orf_token_send (
struct orf_token *orf_token)
struct orf_token *orf_token,
int reset_timer)
{
struct msghdr msg_orf_token;
struct iovec iovec_orf_token;
int res;
poll_timer_delete (*gmi_poll_handle, timer_orf_token_timeout);
if (reset_timer) {
poll_timer_delete (*gmi_poll_handle, timer_orf_token_timeout);
poll_timer_add (*gmi_poll_handle, TIMEOUT_TOKEN, 0,
orf_timer_function_token_timeout, &timer_orf_token_timeout);
poll_timer_add (*gmi_poll_handle, TIMEOUT_TOKEN, 0,
orf_timer_function_token_timeout, &timer_orf_token_timeout);
}
iovec_orf_token.iov_base = (char *)orf_token;
iovec_orf_token.iov_len = sizeof (struct orf_token);
@ -1634,7 +1640,7 @@ int orf_token_send_initial (void)
orf_token.rtr_list_entries = 0;
memset (orf_token.rtr_list, 0, sizeof (struct rtr_item) * RTR_TOKEN_SIZE_MAX);
res = orf_token_send (&orf_token);
res = orf_token_send (&orf_token, 1);
return (res);
}
@ -1821,7 +1827,7 @@ static int memb_state_commit_enter (void)
memb_commit_set_entries = 0;
res = memb_join_send();
poll_timer_delete (*gmi_poll_handle, timer_memb_state_gather_timeout);
poll_timer_delete (*gmi_poll_handle, timer_memb_state_gather_timeout);
timer_memb_state_gather_timeout = 0;
@ -2087,6 +2093,13 @@ static int memb_form_token_send (
poll_timer_delete (*gmi_poll_handle, timer_orf_token_timeout);
timer_orf_token_timeout = 0;
/*
* Delete retransmit timer since a new
* membership is in progress
*/
poll_timer_delete (*gmi_poll_handle, timer_orf_token_retransmit_timeout);
timer_orf_token_retransmit_timeout = 0;
poll_timer_delete (*gmi_poll_handle, timer_form_token_timeout);
poll_timer_add (*gmi_poll_handle, TIMEOUT_TOKEN, 0,
@ -2212,7 +2225,7 @@ static int message_handler_orf_token (
int transmits_allowed;
int starting_group_arut;
#ifdef TESTTOKENDROP
#ifdef TESTTOKENRETRANSMIT
if ((random() % 500) == 0) {
printf ("randomly dropping token to test token retransmit.\n");
return (0);
@ -2225,9 +2238,13 @@ static int message_handler_orf_token (
* to this processor because the retransmit timer on a previous
* processor timed out, so ignore the token
*/
if (gmi_token_seqid > orf_token->token_seqid) {
if (orf_token->token_seqid > 0 && gmi_token_seqid >= orf_token->token_seqid) {
printf ("already received token %d %d\n", orf_token->token_seqid, gmi_token_seqid);
//exit(1);
return (0);
}
gmi_token_seqid = orf_token->token_seqid;
poll_timer_delete (*gmi_poll_handle, timer_orf_token_retransmit_timeout);
timer_orf_token_retransmit_timeout = 0;
@ -2241,6 +2258,14 @@ static int message_handler_orf_token (
gmi_log_printf (gmi_log_level_notice, "swallowing ORF token %d.\n", stats_orf_token);
poll_timer_delete (*gmi_poll_handle, timer_orf_token_timeout);
timer_orf_token_timeout = 0;
/*
* Delete retransmit timer since a new
* membership is in progress
*/
poll_timer_delete (*gmi_poll_handle, timer_orf_token_retransmit_timeout);
timer_orf_token_retransmit_timeout = 0;
return (0);
}
@ -2303,15 +2328,17 @@ static int message_handler_orf_token (
*/
orf_token->token_seqid += 1;
memcpy (&orf_token_retransmit, orf_token, sizeof (struct orf_token));
poll_timer_delete (*gmi_poll_handle, timer_orf_token_retransmit_timeout);
poll_timer_add (*gmi_poll_handle, TIMEOUT_TOKEN_RETRANSMIT, 0,
timer_function_token_retransmit_timeout,
&timer_orf_token_retransmit_timeout);
/*
* Transmit orf_token to next member
*/
orf_token_send (orf_token);
orf_token_send (orf_token, 1);
return (0);
}
@ -2377,7 +2404,7 @@ struct pend_delv *pend_delv_next_delivery_find (void)
int i;
/*
* Find first_delivery queue that is not mepty
* Find first_delivery queue that is not empty
* this sets the first pend_delv
*/
for (i = 0; i < memb_list_entries_confchg; i++) {
@ -2453,6 +2480,7 @@ static int user_deliver ()
* the queue that should be delivered from next
*/
pend_delv = pend_delv_next_delivery_find ();
assert (pend_delv); // TODO this assertion fails sometimes
//printf ("Delivering from queue %s\n", inet_ntoa (pend_delv->ip));
/*
@ -2641,6 +2669,10 @@ static void pending_queues_deliver (void)
assert (mcast->source.s_addr != 0);
pend_delv = pend_delv_find (mcast->source);
if (pend_delv == 0) {
printf ("mcast source is %s\n", inet_ntoa (mcast->source));
}
assert (pend_delv != 0);
assert (pend_delv->ip.s_addr != 0);
@ -2736,32 +2768,18 @@ static int message_handler_memb_attempt_join (
int iov_len,
int bytes_received)
{
int token_lost;
int found;
int i;
gmi_log_printf (gmi_log_level_notice, "Got attempt join from %s\n", inet_ntoa (system_from->sin_addr));
for (token_lost = 0, i = 0; i < memb_list_entries; i++) {
if (memb_list[i].sin_addr.s_addr == system_from->sin_addr.s_addr &&
memb_conf_id.rep.s_addr != system_from->sin_addr.s_addr) {
gmi_log_printf (gmi_log_level_notice, "ATTEMPT JOIN, token lost, taking attempt join msg.\n");
poll_timer_delete (*gmi_poll_handle, timer_orf_token_timeout);
timer_orf_token_timeout = 0;
memb_conf_id.rep.s_addr = memb_local_sockaddr_in.sin_addr.s_addr;
memb_list_entries = 1;
token_lost = 1;
break;
}
}
/*
* Not representative
*/
if (token_lost == 0 &&
memb_conf_id.rep.s_addr != memb_local_sockaddr_in.sin_addr.s_addr) {
if (memb_conf_id.rep.s_addr != memb_local_sockaddr_in.sin_addr.s_addr) {
gmi_log_printf (gmi_log_level_notice, "not the rep for this ring, not handling attempt join.\n");
gmi_log_printf (gmi_log_level_notice, "rep is %s, not handling attempt join.\n",
inet_ntoa (memb_conf_id.rep));
return (0);
}
@ -2940,6 +2958,14 @@ printf ("Got membership form token\n");
*/
poll_timer_delete (*gmi_poll_handle, timer_orf_token_timeout);
timer_orf_token_timeout = 0;
/*
* Delete retransmit timer since a new
* membership is in progress
*/
poll_timer_delete (*gmi_poll_handle, timer_orf_token_retransmit_timeout);
timer_orf_token_retransmit_timeout = 0;
/*
* Find next member
*/
@ -2974,6 +3000,8 @@ printf ("Got membership form token\n");
break;
case MEMB_STATE_FORM:
gmi_token_seqid = 0;
memb_state = MEMB_STATE_EVS;
memb_form_token_update_highest_seq (&memb_form_token);