Hi Holger,

Sorry for slow response.
Actually I think that we should implement more intellectual behavior of PCU for handling restarts and disconnections of BTS and SGSN.
I should try to find the way to solve this problem, but I will commit this patch, because it fixes current problems.


2013/7/13 Holger Hans Peter Freyther <holger@moiji-mobile.com>
The PCU does not properly re-set the state when the connection to the
BTS is lost (and the SGSN potentially is re-started during that). This
results in the BSSGP BVCI > 1 remaining blocked and no data will be
accepted by the SGSN.

Add the '-e' option and exit the PCU when the BSSGP/NS are getting
destroyed.
---
 src/gprs_bssgp_pcu.cpp | 13 ++++++++++++-
 src/gprs_bssgp_pcu.h   |  3 ++-
 src/openbts_sock.cpp   |  2 +-
 src/pcu_l1_if.cpp      |  2 +-
 src/pcu_main.cpp       |  7 ++++++-
 src/sysmo_sock.cpp     |  2 +-
 6 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/src/gprs_bssgp_pcu.cpp b/src/gprs_bssgp_pcu.cpp
index c791913..59185e3 100644
--- a/src/gprs_bssgp_pcu.cpp
+++ b/src/gprs_bssgp_pcu.cpp
@@ -27,6 +27,7 @@ struct bssgp_bvc_ctx *bctx = NULL;
 struct gprs_nsvc *nsvc = NULL;
 static int bvc_sig_reset = 0, bvc_reset = 0, bvc_unblocked = 0;
 extern uint16_t spoof_mcc, spoof_mnc;
+static int exit_on_destroy = 0;

 struct osmo_timer_list bvc_timer;

@@ -640,8 +641,13 @@ int gprs_bssgp_create(uint16_t local_port, uint32_t sgsn_ip,
        return 0;
 }

-void gprs_bssgp_destroy(void)
+void gprs_bssgp_destroy_or_exit(void)
 {
+       if (exit_on_destroy) {
+               LOGP(DBSSGP, LOGL_NOTICE, "Exiting on BSSGP destruction.\n");
+               exit(0);
+       }
+
        if (!bssgp_nsi)
                return;

@@ -662,3 +668,8 @@ void gprs_bssgp_destroy(void)
        bssgp_nsi = NULL;
 }

+void gprs_bssgp_exit_on_destroy(void)
+{
+       LOGP(DBSSGP, LOGL_NOTICE, "Going to quit on BSSGP destruction\n");
+       exit_on_destroy = 1;
+}
diff --git a/src/gprs_bssgp_pcu.h b/src/gprs_bssgp_pcu.h
index d669c3a..dc57e4f 100644
--- a/src/gprs_bssgp_pcu.h
+++ b/src/gprs_bssgp_pcu.h
@@ -56,6 +56,7 @@ int gprs_bssgp_create(uint16_t local_port, uint32_t sgsn_ip, uint16_t
                uint16_t mcc, uint16_t mnc, uint16_t lac, uint16_t rac,
                uint16_t cell_id);

-void gprs_bssgp_destroy(void);
+void gprs_bssgp_exit_on_destroy(void);
+void gprs_bssgp_destroy_or_exit(void);

 #endif // GPRS_BSSGP_PCU_H
diff --git a/src/openbts_sock.cpp b/src/openbts_sock.cpp
index 845aa77..a09f834 100644
--- a/src/openbts_sock.cpp
+++ b/src/openbts_sock.cpp
@@ -179,7 +179,7 @@ int pcu_l1if_open()

 void pcu_l1if_close(void)
 {
-       gprs_bssgp_destroy();
+       gprs_bssgp_destroy_or_exit();

        /* FIXME: cleanup l1if */
        talloc_free(l1fh->fl1h);
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index 923070f..037cf60 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -369,7 +369,7 @@ bssgp_failed:
                                                trx, ts);
                        }
                }
-               gprs_bssgp_destroy();
+               gprs_bssgp_destroy_or_exit();
                return 0;
        }
        LOGP(DL1IF, LOGL_INFO, "BTS available\n");
diff --git a/src/pcu_main.cpp b/src/pcu_main.cpp
index 041831f6..754043f 100644
--- a/src/pcu_main.cpp
+++ b/src/pcu_main.cpp
@@ -60,6 +60,7 @@ static void print_help()
                        "provided by BTS\n"
                "  -r   --realtime PRIO Use SCHED_RR with the specified "
                        "priority\n"
+               "  -e   --exit          Exit the application on disconnect\n"
                );
 }

@@ -75,10 +76,11 @@ static void handle_options(int argc, char **argv)
                        { "mnc", 1, 0, 'n' },
                        { "version", 0, 0, 'V' },
                        { "realtime", 1, 0, 'r' },
+                       { "exit", 0, 0, 'e' },
                        { 0, 0, 0, 0 }
                };

-               c = getopt_long(argc, argv, "hc:m:n:Vr:",
+               c = getopt_long(argc, argv, "hc:m:n:Vr:e",
                                long_options, &option_idx);
                if (c == -1)
                        break;
@@ -105,6 +107,9 @@ static void handle_options(int argc, char **argv)
                case 'r':
                        rt_prio = atoi(optarg);
                        break;
+               case 'e':
+                       gprs_bssgp_exit_on_destroy();
+                       break;
                default:
                        fprintf(stderr, "Unknown option '%c'\n", c);
                        exit(0);
diff --git a/src/sysmo_sock.cpp b/src/sysmo_sock.cpp
index d4fb5a6..e116e5a 100644
--- a/src/sysmo_sock.cpp
+++ b/src/sysmo_sock.cpp
@@ -117,7 +117,7 @@ static void pcu_sock_close(struct pcu_sock_state *state, int lost)
                }
        }

-       gprs_bssgp_destroy();
+       gprs_bssgp_destroy_or_exit();

        if (lost) {
                state->timer.cb = pcu_sock_timeout;
--
1.8.3.2





--
Regards,
Ivan Kluchnikov.
http://fairwaves.ru