diff options
Diffstat (limited to 'openbsc/src/osmo-bsc_nat/bsc_ussd.c')
| -rw-r--r-- | openbsc/src/osmo-bsc_nat/bsc_ussd.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/openbsc/src/osmo-bsc_nat/bsc_ussd.c b/openbsc/src/osmo-bsc_nat/bsc_ussd.c index f7753fb49..d422f9e93 100644 --- a/openbsc/src/osmo-bsc_nat/bsc_ussd.c +++ b/openbsc/src/osmo-bsc_nat/bsc_ussd.c @@ -69,6 +69,20 @@ static void bsc_nat_ussd_destroy(struct bsc_nat_ussd_con *con) talloc_free(con); } +static void ussd_pong(struct bsc_nat_ussd_con *conn) +{ + struct msgb *msg; + + msg = msgb_alloc_headroom(4096, 128, "pong message"); + if (!msg) { + LOGP(DNAT, LOGL_ERROR, "Failed to allocate pong msg\n"); + return; + } + + msgb_v_put(msg, IPAC_MSGT_PONG); + bsc_do_write(&conn->queue, msg, IPAC_PROTO_IPACCESS); +} + static int forward_sccp(struct bsc_nat *nat, struct msgb *msg) { struct nat_sccp_connection *con; @@ -133,6 +147,11 @@ static int ussd_read_cb(struct osmo_fd *bfd) } if (TLVP_PRESENT(&tvp, IPAC_IDTAG_UNITNAME)) ussd_auth_con(&tvp, conn); + } else if (msg->l2h[0] == IPAC_MSGT_PING) { + LOGP(DNAT, LOGL_DEBUG, "Got USSD ping request.\n"); + ussd_pong(conn); + } else { + LOGP(DNAT, LOGL_NOTICE, "Got unknown IPACCESS message 0x%02x.\n", msg->l2h[0]); } msgb_free(msg); |