ipacess-config: Handle NVATTR NACKs in ipaccess-config
Currently we send the attribute changes in a send and forget
fashion. But sometimes the nanoBTS is sending us a NACK, e.g
with a invalid unit id. Start handling the NACK and provide
an error message to the user. The error message is not yet
describing the cause of the error but this is a slight progress
to the previous silent failure.
diff --git a/openbsc/src/ipaccess-config.c b/openbsc/src/ipaccess-config.c
index ec145e5..52e9cc9 100644
--- a/openbsc/src/ipaccess-config.c
+++ b/openbsc/src/ipaccess-config.c
@@ -37,6 +37,7 @@
#include <openbsc/gsm_data.h>
#include <openbsc/e1_input.h>
#include <openbsc/abis_nm.h>
+#include <openbsc/signal.h>
static struct gsm_network *gsmnet;
@@ -51,6 +52,33 @@
static u_int8_t unit_id_attr[] = { 0x91, 0x00, 9, '2', '3', '4', '2', '/' , '0', '/', '0', 0x00 };
*/
+/*
+ * Callback function for NACK on the OML NM
+ *
+ * Currently we send the config requests but don't check the
+ * result. The nanoBTS will send us a NACK when we did something the
+ * BTS didn't like.
+ */
+static int ipacc_msg_nack(int mt)
+{
+ fprintf(stderr, "Failure to set attribute. This seems fatal\n");
+ exit(-1);
+ return 0;
+}
+
+static int nm_sig_cb(unsigned int subsys, unsigned int signal,
+ void *handler_data, void *signal_data)
+{
+ switch (signal) {
+ case S_NM_IPACC_NACK:
+ return ipacc_msg_nack((int)signal_data);
+ default:
+ break;
+ }
+
+ return 0;
+}
+
static void bootstrap_om(struct gsm_bts *bts)
{
int len;
@@ -223,6 +251,7 @@
bts = gsm_bts_alloc(gsmnet, GSM_BTS_TYPE_NANOBTS_900, HARDCODED_TSC,
HARDCODED_BSIC);
+ register_signal_handler(SS_NM, nm_sig_cb, NULL);
printf("Trying to connect to ip.access BTS ...\n");
memset(&sin, 0, sizeof(sin));