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authorHarald Welte <laforge@gnumonks.org>2018-03-19 10:00:01 +0100
committerHarald Welte <laforge@gnumonks.org>2018-03-19 10:00:01 +0100
commit05cd0f2628d09c0867dd726f2f8a5cb3e5506755 (patch)
tree73dcdab7a7b1f7285d672751f41da0e310b721fe
parentcdc5e591bb871ec04b9d79ddb411fcc87a5fd508 (diff)
comments
-rw-r--r--src/mncc.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mncc.c b/src/mncc.c
index 45c062f..66c73a3 100644
--- a/src/mncc.c
+++ b/src/mncc.c
@@ -82,6 +82,7 @@ static void stop_cmd_timer(struct mncc_call_leg *leg, uint32_t got_res)
osmo_timer_del(&leg->cmd_timeout);
}
+/* Find a MNCC Call leg (whether MO or MT) by given callref */
static struct mncc_call_leg *mncc_find_leg(uint32_t callref)
{
struct call *call;
@@ -146,6 +147,7 @@ static void mncc_rtp_send(struct mncc_connection *conn, uint32_t msg_type, uint3
}
}
+/* Send a MNCC_RTP_CONNET to the MSC for the given call legs */
static bool send_rtp_connect(struct mncc_call_leg *leg, struct call_leg *other)
{
struct gsm_mncc_rtp mncc = { 0, };
@@ -174,6 +176,7 @@ static bool send_rtp_connect(struct mncc_call_leg *leg, struct call_leg *other)
return true;
}
+/* CONNECT call-back for MNCC call leg */
static void mncc_call_leg_connect(struct call_leg *_leg)
{
struct mncc_call_leg *leg;
@@ -192,6 +195,7 @@ static void mncc_call_leg_connect(struct call_leg *_leg)
mncc_send(leg->conn, MNCC_SETUP_RSP, leg->callref);
}
+/* RING call-back for MNCC call leg */
static void mncc_call_leg_ring(struct call_leg *_leg)
{
struct gsm_mncc out_mncc = { 0, };
@@ -219,6 +223,7 @@ static void mncc_call_leg_ring(struct call_leg *_leg)
send_rtp_connect(leg, other_leg);
}
+/* RELEASE call-back for MNCC call leg */
static void mncc_call_leg_release(struct call_leg *_leg)
{
struct mncc_call_leg *leg;
@@ -262,6 +267,7 @@ static void mncc_call_leg_release(struct call_leg *_leg)
}
}
+/* Close the MNCC connection/socket */
static void close_connection(struct mncc_connection *conn)
{
osmo_fd_unregister(&conn->fd);
@@ -389,6 +395,7 @@ static int continue_setup(struct mncc_connection *conn, struct gsm_mncc *mncc)
return 1;
}
+/* Check + Process MNCC_SETUP_IND (MO call) */
static void check_setup(struct mncc_connection *conn, char *buf, int rc)
{
struct gsm_mncc *data;
@@ -452,6 +459,12 @@ static void check_setup(struct mncc_connection *conn, char *buf, int rc)
mncc_rtp_send(conn, MNCC_RTP_CREATE, data->callref);
}
+/*! Find MNCC Call leg by given MNCC message
+ * \param conn MNCC socket/connection
+ * \param[in] buf buffer containing MNCC message
+ * \param[in] rc length of message in \a buf
+ * \param[out] mncc return pointer to MNCC message
+ * \returns call leg (if found) or NULL */
static struct mncc_call_leg *find_leg(struct mncc_connection *conn,
char *buf, int rc, struct gsm_mncc **mncc)
{
@@ -787,6 +800,7 @@ static void mncc_reconnect(void *data)
conn->state = MNCC_WAIT_VERSION;
}
+/* osmo-fd read call-back for MNCC socket: read MNCC message + dispatch it */
static int mncc_data(struct osmo_fd *fd, unsigned int what)
{
char buf[4096];