pespin has uploaded this change for review.
default_lm_fsm: Trigger ASP restart by disconnecting the stream
Previous behavior was to restart the ASP top-to-bottom in the stack,
which doesn't play well with the disconnect_cb().
For instance, upon LM FSM timer callback, osmo_ss7_asp_restart() would call
osmo_stream_cli_open() which in turn would call osmo_stream_close(). As
a result, in that code path events were being sent to the LM FSM itself
notifying the disconnection of the SCTP conn, which in turn would call
osmo_ss7_asp_restart() again, and everything ended up in a weird state
where it couldn't create sockets properly.
The better approach is to, from LM FSM, trigger disconnection of the
SCTP conn, which will in turn, through disconnect_cb(), send the SCTP
disconnect notification up the stack, which should then trigger
re-establishment of the SCTP conn in the SCTP client case.
Change-Id: I21ebc3cd716a0bcc74da0a789032570f038e119d
---
M src/xua_default_lm_fsm.c
1 file changed, 6 insertions(+), 6 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmo-sigtran refs/changes/35/39635/1
diff --git a/src/xua_default_lm_fsm.c b/src/xua_default_lm_fsm.c
index 7c27b19..fc01605 100644
--- a/src/xua_default_lm_fsm.c
+++ b/src/xua_default_lm_fsm.c
@@ -207,7 +207,7 @@
/* we have been waiting for the ASP to come up, but it
* failed to do so */
LOGPFSML(fi, LOGL_NOTICE, "Peer didn't send any ASP_UP in time! Restarting ASP\n");
- restart_asp(fi);
+ ss7_asp_disconnect_stream(lmp->asp);
break;
case SS7_ASP_LM_T_WAIT_NOTIFY:
if (lmp->asp->cfg.quirks & OSMO_SS7_ASP_QUIRK_NO_NOTIFY) {
@@ -226,7 +226,7 @@
as = find_first_as_in_asp(lmp->asp);
if (!as) {
LOGPFSML(fi, LOGL_ERROR, "Unable to find AS!\n");
- restart_asp(fi);
+ ss7_asp_disconnect_stream(lmp->asp);
return 0;
}
/* Fill in settings from first AS (TODO: multiple AS support) */
@@ -237,11 +237,11 @@
case SS7_ASP_LM_T_WAIT_NOTIY_RKM:
/* No AS has reported via NOTIFY even after dynamic RKM
* configuration */
- restart_asp(fi);
+ ss7_asp_disconnect_stream(lmp->asp);
break;
case SS7_ASP_LM_T_WAIT_RK_REG_RESP:
/* timeout of registration of routing key */
- restart_asp(fi);
+ ss7_asp_disconnect_stream(lmp->asp);
break;
}
return 0;
@@ -285,12 +285,12 @@
oxp = data;
if (oxp->u.rk_reg.status != M3UA_RKM_REG_SUCCESS) {
LOGPFSML(fi, LOGL_NOTICE, "Received RKM_REG_RSP with negative result\n");
- restart_asp(fi);
+ ss7_asp_disconnect_stream(lmp->asp);
} else {
unsigned long timeout_sec;
rc = handle_reg_conf(fi, oxp->u.rk_reg.key.l_rk_id, oxp->u.rk_reg.key.context);
if (rc < 0)
- restart_asp(fi);
+ ss7_asp_disconnect_stream(lmp->asp);
/* RKM registration was successful, we can transition to WAIT_NOTIFY
* state and assume that an NOTIFY/AS-INACTIVE arrives within
* T_WAIT_NOTIFY_RKM seconds */
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