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-rw-r--r--openbsc/src/libmsc/db.c61
-rw-r--r--openbsc/src/libmsc/sms_queue.c68
-rw-r--r--openbsc/src/libmsc/vty_interface_layer3.c11
-rw-r--r--openbsc/src/libvlr/vlr.c4
4 files changed, 88 insertions, 56 deletions
diff --git a/openbsc/src/libmsc/db.c b/openbsc/src/libmsc/db.c
index 035d5488f..28e978213 100644
--- a/openbsc/src/libmsc/db.c
+++ b/openbsc/src/libmsc/db.c
@@ -643,20 +643,21 @@ struct gsm_sms *db_sms_get(struct gsm_network *net, unsigned long long id)
return sms;
}
-/* retrieve the next unsent SMS with ID >= min_id */
-struct gsm_sms *db_sms_get_unsent(struct gsm_network *net, unsigned long long min_id)
+struct gsm_sms *db_sms_get_next_unsent(struct gsm_network *net,
+ unsigned long long min_sms_id,
+ unsigned int max_failed)
{
dbi_result result;
struct gsm_sms *sms;
result = dbi_conn_queryf(conn,
- "SELECT SMS.* "
- "FROM SMS JOIN Subscriber ON "
- "SMS.dest_addr = Subscriber.extension "
- "WHERE SMS.id >= %llu AND SMS.sent IS NULL "
- "AND Subscriber.lac > 0 "
- "ORDER BY SMS.id LIMIT 1",
- min_id);
+ "SELECT * FROM SMS"
+ " WHERE sent IS NULL"
+ " AND id >= %llu"
+ " AND deliver_attempts <= %u"
+ " ORDER BY id LIMIT 1",
+ min_sms_id, max_failed);
+
if (!result)
return NULL;
@@ -672,21 +673,24 @@ struct gsm_sms *db_sms_get_unsent(struct gsm_network *net, unsigned long long mi
return sms;
}
-struct gsm_sms *db_sms_get_unsent_by_subscr(struct gsm_network *net,
- unsigned long long min_subscr_id,
- unsigned int failed)
+/* retrieve the next unsent SMS for a given subscriber */
+struct gsm_sms *db_sms_get_unsent_for_subscr(struct vlr_subscr *vsub,
+ unsigned int max_failed)
{
+ struct gsm_network *net = vsub->vlr->user_ctx;
dbi_result result;
struct gsm_sms *sms;
+ if (!vsub->lu_complete)
+ return NULL;
+
result = dbi_conn_queryf(conn,
- "SELECT SMS.* "
- "FROM SMS JOIN Subscriber ON "
- "SMS.dest_addr = Subscriber.extension "
- "WHERE Subscriber.id >= %llu AND SMS.sent IS NULL "
- "AND Subscriber.lac > 0 AND SMS.deliver_attempts < %u "
- "ORDER BY Subscriber.id, SMS.id LIMIT 1",
- min_subscr_id, failed);
+ "SELECT * FROM SMS"
+ " WHERE sent IS NULL"
+ " AND dest_addr=%s"
+ " AND deliver_attempts <= %u"
+ " ORDER BY id LIMIT 1",
+ vsub->msisdn, max_failed);
if (!result)
return NULL;
@@ -702,21 +706,20 @@ struct gsm_sms *db_sms_get_unsent_by_subscr(struct gsm_network *net,
return sms;
}
-/* retrieve the next unsent SMS for a given subscriber */
-struct gsm_sms *db_sms_get_unsent_for_subscr(struct vlr_subscr *vsub)
+struct gsm_sms *db_sms_get_next_unsent_rr_msisdn(struct gsm_network *net,
+ const char *last_msisdn,
+ unsigned int max_failed)
{
- struct gsm_network *net = vsub->vlr->user_ctx;
dbi_result result;
struct gsm_sms *sms;
result = dbi_conn_queryf(conn,
- "SELECT SMS.* "
- "FROM SMS JOIN Subscriber ON "
- "SMS.dest_addr = Subscriber.extension "
- "WHERE Subscriber.id = %llu AND SMS.sent IS NULL "
- "AND Subscriber.lac > 0 "
- "ORDER BY SMS.id LIMIT 1",
- vsub->id);
+ "SELECT * FROM SMS"
+ " WHERE sent IS NULL"
+ " AND dest_addr > '%s'"
+ " AND deliver_attempts <= %u"
+ " ORDER BY dest_addr, id LIMIT 1",
+ last_msisdn, max_failed);
if (!result)
return NULL;
diff --git a/openbsc/src/libmsc/sms_queue.c b/openbsc/src/libmsc/sms_queue.c
index e3b554d88..a01177dac 100644
--- a/openbsc/src/libmsc/sms_queue.c
+++ b/openbsc/src/libmsc/sms_queue.c
@@ -28,6 +28,8 @@
* things up by collecting data from other parts of the system.
*/
+#include <limits.h>
+
#include <openbsc/sms_queue.h>
#include <openbsc/chan_alloc.h>
#include <openbsc/db.h>
@@ -63,7 +65,8 @@ struct gsm_sms_queue {
int pending;
struct llist_head pending_sms;
- unsigned long long last_subscr_id;
+
+ char last_msisdn[GSM_EXTENSION_LENGTH+1];
};
static int sms_subscr_cb(unsigned int, unsigned int, void *, void *);
@@ -189,29 +192,49 @@ static void sms_resend_pending(void *_data)
}
}
-static struct gsm_sms *take_next_sms(struct gsm_sms_queue *smsq)
+/* Find the next pending SMS by cycling through the recipients. We could also
+ * cycle through the pending SMS, but that might cause us to keep trying to
+ * send SMS to the same few subscribers repeatedly while not servicing other
+ * subscribers for a long time. By walking the list of recipient MSISDNs, we
+ * ensure that all subscribers get their fair time to receive SMS. */
+struct gsm_sms *smsq_take_next_sms(struct gsm_network *net,
+ char *last_msisdn,
+ size_t last_msisdn_buflen)
{
struct gsm_sms *sms;
+ int wrapped = 0;
+ int sanity = 100;
+ char started_with_msisdn[last_msisdn_buflen];
+
+ osmo_strlcpy(started_with_msisdn, last_msisdn,
+ sizeof(started_with_msisdn));
+
+ while (wrapped < 2 && (--sanity)) {
+ /* If we wrapped around and passed the first msisdn, we're
+ * through the entire SMS DB; end it. */
+ if (wrapped && strcmp(last_msisdn, started_with_msisdn) >= 0)
+ break;
+
+ sms = db_sms_get_next_unsent_rr_msisdn(net, last_msisdn, 9);
+ if (!sms) {
+ last_msisdn[0] = '\0';
+ wrapped ++;
+ continue;
+ }
+
+ /* Whatever happens, next time around service another recipient
+ */
+ osmo_strlcpy(last_msisdn, sms->dst.addr, last_msisdn_buflen);
+
+ /* Is the subscriber attached? If not, go to next SMS */
+ if (!sms->receiver || !sms->receiver->lu_complete)
+ continue;
- sms = db_sms_get_unsent_by_subscr(smsq->network, smsq->last_subscr_id, 10);
- DEBUGP(DLSMS, "db_sms_get_unsent_by_subscr(id = %llu) returned %p\n",
- smsq->last_subscr_id, sms);
- if (sms) {
- smsq->last_subscr_id = sms->receiver->id + 1;
- DEBUGP(DLSMS, "take_next_sms() returns %p\n", sms);
return sms;
}
- /* need to wrap around */
- smsq->last_subscr_id = 0;
- sms = db_sms_get_unsent_by_subscr(smsq->network,
- smsq->last_subscr_id, 10);
- DEBUGP(DLSMS, "db_sms_get_unsent_by_subscr(id = %llu) returned %p\n",
- smsq->last_subscr_id, sms);
- if (sms)
- smsq->last_subscr_id = sms->receiver->id + 1;
- DEBUGP(DLSMS, "take_next_sms() returns %p\n", sms);
- return sms;
+ DEBUGP(DLSMS, "SMS queue: no SMS to be sent\n");
+ return NULL;
}
/**
@@ -233,7 +256,8 @@ static void sms_submit_pending(void *_data)
struct gsm_sms *sms;
- sms = take_next_sms(smsq);
+ sms = smsq_take_next_sms(smsq->network, smsq->last_msisdn,
+ sizeof(smsq->last_msisdn));
if (!sms) {
LOGP(DLSMS, LOGL_DEBUG, "Sending SMS done (%d attempted)\n",
attempted);
@@ -309,11 +333,11 @@ static void sms_send_next(struct vlr_subscr *vsub)
OSMO_ASSERT(!sms_subscriber_is_pending(smsq, vsub));
/* check for more messages for this subscriber */
- sms = db_sms_get_unsent_for_subscr(vsub);
+ sms = db_sms_get_unsent_for_subscr(vsub, UINT_MAX);
if (!sms)
goto no_pending_sms;
- /* No sms should be scheduled right now */
+ /* The sms should not be scheduled right now */
OSMO_ASSERT(!sms_is_in_pending(smsq, sms));
/* Remember that we deliver this SMS and send it */
@@ -408,7 +432,7 @@ static int sub_ready_for_sm(struct gsm_network *net, struct vlr_subscr *vsub)
return -1;
/* Now try to deliver any pending SMS to this sub */
- sms = db_sms_get_unsent_for_subscr(vsub);
+ sms = db_sms_get_unsent_for_subscr(vsub, UINT_MAX);
if (!sms)
return -1;
gsm411_send_sms(conn, sms);
diff --git a/openbsc/src/libmsc/vty_interface_layer3.c b/openbsc/src/libmsc/vty_interface_layer3.c
index 5ed0b0fe1..7fa66d3e4 100644
--- a/openbsc/src/libmsc/vty_interface_layer3.c
+++ b/openbsc/src/libmsc/vty_interface_layer3.c
@@ -158,16 +158,17 @@ DEFUN(sms_send_pend,
{
struct gsm_network *gsmnet = gsmnet_from_vty(vty);
struct gsm_sms *sms;
- int id = 0;
+ unsigned long long sms_id = 0;
while (1) {
- sms = db_sms_get_unsent_by_subscr(gsmnet, id, UINT_MAX);
+ sms = db_sms_get_next_unsent(gsmnet, sms_id, UINT_MAX);
if (!sms)
break;
- gsm411_send_sms_subscr(sms->receiver, sms);
+ if (sms->receiver)
+ gsm411_send_sms_subscr(sms->receiver, sms);
- id = sms->receiver->id + 1;
+ sms_id = sms->id + 1;
}
return CMD_SUCCESS;
@@ -268,7 +269,7 @@ DEFUN(subscriber_send_pending_sms,
return CMD_WARNING;
}
- sms = db_sms_get_unsent_by_subscr(gsmnet, vsub->id, UINT_MAX);
+ sms = db_sms_get_unsent_for_subscr(vsub, UINT_MAX);
if (sms)
gsm411_send_sms_subscr(sms->receiver, sms);
diff --git a/openbsc/src/libvlr/vlr.c b/openbsc/src/libvlr/vlr.c
index f0123012b..bc8d43d92 100644
--- a/openbsc/src/libvlr/vlr.c
+++ b/openbsc/src/libvlr/vlr.c
@@ -176,6 +176,8 @@ static int vlr_tx_gsup_error_reply(struct vlr_instance *vlr,
struct vlr_subscr *_vlr_subscr_get(struct vlr_subscr *sub, const char *file, int line)
{
+ if (!sub)
+ return NULL;
OSMO_ASSERT(sub->use_count < INT_MAX);
sub->use_count++;
LOGPSRC(DREF, LOGL_DEBUG, file, line,
@@ -186,6 +188,8 @@ struct vlr_subscr *_vlr_subscr_get(struct vlr_subscr *sub, const char *file, int
struct vlr_subscr *_vlr_subscr_put(struct vlr_subscr *sub, const char *file, int line)
{
+ if (!sub)
+ return NULL;
sub->use_count--;
LOGPSRC(DREF, sub->use_count >= 0? LOGL_DEBUG : LOGL_ERROR,
file, line,
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-28 19:34:37 +0000