Harald Welte has submitted this change and it was merged. ( 
https://gerrit.osmocom.org/12403 )

Change subject: tweak fsm_msc_mgcp FSM and FI name
......................................................................

tweak fsm_msc_mgcp FSM and FI name

Instead of

  MGW(MGW_99)

use a name of

  msc-mgcp(MSISDN:2331_GERAN_A:00000017_trans99)

1. The FSM is communication towards an MGW, not the MGW itself. When reading
combined logging (gsmtap_log), it is confusing to read 'MGW' in a log coming
from the MSC. The API is also called msc_mgcp_*.

2. Calling the FSM instance 'MGW_' again doesn't make sense.

3. Indicate 'trans' before the trans_id (trans_id was already shown, but not
indicated what it was).

4. Also indicate the actual subscriber's identification.

5. Also indicate the RAN connection and conn_id.

This comes up while trying to understand a call coming in on an already
established call: parsing the log with a human brain is near torture without
this info, taking extremely long to get grips on.

Change-Id: Ie5fc1ffb7eba0209fee4666a075655cd24d27473
---
M src/libmsc/msc_mgcp.c
1 file changed, 4 insertions(+), 6 deletions(-)

Approvals:
  Harald Welte: Looks good to me, approved
  Vadim Yanitskiy: Looks good to me, but someone else must approve
  Jenkins Builder: Verified



diff --git a/src/libmsc/msc_mgcp.c b/src/libmsc/msc_mgcp.c
index 08a1db0..5c88880 100644
--- a/src/libmsc/msc_mgcp.c
+++ b/src/libmsc/msc_mgcp.c
@@ -941,7 +941,7 @@

 /* State machine definition */
 static struct osmo_fsm fsm_msc_mgcp = {
-       .name = "MGW",
+       .name = "msc-mgcp",
        .states = fsm_msc_mgcp_states,
        .num_states = ARRAY_SIZE(fsm_msc_mgcp_states),
        .log_subsys = DMGCP,
@@ -977,7 +977,6 @@
 int msc_mgcp_call_assignment(struct gsm_trans *trans)
 {
        struct mgcp_ctx *mgcp_ctx;
-       char name[32];
        static bool fsm_registered = false;
        struct ran_conn *conn;
        struct mgcp_client *mgcp;
@@ -1007,9 +1006,6 @@
                conn->iu.rab_id = next_iu_rab_id++;
 #endif

-       if (snprintf(name, sizeof(name), "MGW_%i", trans->transaction_id) >= 
sizeof(name))
-               return -EINVAL;
-
        /* Register the fsm description (if not already done) */
        if (fsm_registered == false) {
                osmo_fsm_register(&fsm_msc_mgcp);
@@ -1027,8 +1023,10 @@
                     vlr_subscr_name(trans->vsub), 
osmo_quote_str(mgcp_client_rtpbridge_wildcard(mgcp), -1));
                return -EINVAL;
        }
-       mgcp_ctx->fsm = osmo_fsm_inst_alloc(&fsm_msc_mgcp, NULL, NULL, 
LOGL_DEBUG, name);
+       mgcp_ctx->fsm = osmo_fsm_inst_alloc(&fsm_msc_mgcp, NULL, NULL, 
LOGL_DEBUG, NULL);
        OSMO_ASSERT(mgcp_ctx->fsm);
+       osmo_fsm_inst_update_id_f(mgcp_ctx->fsm, "%s_%s_trans%d",
+                                 vlr_subscr_name(trans->vsub), 
ran_conn_get_conn_id(conn), trans->transaction_id);
        mgcp_ctx->fsm->priv = mgcp_ctx;
        mgcp_ctx->mgcp = mgcp;
        mgcp_ctx->trans = trans;

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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Ie5fc1ffb7eba0209fee4666a075655cd24d27473
Gerrit-Change-Number: 12403
Gerrit-PatchSet: 12
Gerrit-Owner: Neels Hofmeyr <[email protected]>
Gerrit-Reviewer: Harald Welte <[email protected]>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-Reviewer: Vadim Yanitskiy <[email protected]>

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