nat: Make mode-set patching optional
diff --git a/openbsc/src/osmo-bsc_nat/bsc_mgcp_utils.c b/openbsc/src/osmo-bsc_nat/bsc_mgcp_utils.c
index 9759303..5a024db 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_mgcp_utils.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_mgcp_utils.c
@@ -552,7 +552,8 @@
bsc_msg = bsc_mgcp_rewrite((char *) nat->mgcp_msg, nat->mgcp_length,
sccp->bsc_endp, nat->mgcp_cfg->source_addr,
mgcp_endp->bts_end.local_port, osmux_cid,
- &mgcp_endp->net_end.codec.payload_type);
+ &mgcp_endp->net_end.codec.payload_type,
+ nat->sdp_ensure_amr_mode_set);
if (!bsc_msg) {
LOGP(DMGCP, LOGL_ERROR, "Failed to patch the msg.\n");
return MGCP_POLICY_CONT;
@@ -746,7 +747,8 @@
output = bsc_mgcp_rewrite((char * ) msg->l2h, msgb_l2len(msg), -1,
bsc->nat->mgcp_cfg->source_addr,
endp->net_end.local_port, -1,
- &endp->bts_end.codec.payload_type);
+ &endp->bts_end.codec.payload_type,
+ bsc->nat->sdp_ensure_amr_mode_set);
if (!output) {
LOGP(DMGCP, LOGL_ERROR, "Failed to rewrite MGCP msg.\n");
return;
@@ -813,7 +815,7 @@
/* we need to replace some strings... */
struct msgb *bsc_mgcp_rewrite(char *input, int length, int endpoint,
const char *ip, int port, int osmux_cid,
- int *payload_type)
+ int *payload_type, int ensure_mode_set)
{
static const char crcx_str[] = "CRCX ";
static const char dlcx_str[] = "DLCX ";
@@ -898,7 +900,7 @@
* the above code made sure that we have 128 bytes lefts. So we can
* safely append another line.
*/
- if (!found_fmtp && payload != -1) {
+ if (ensure_mode_set && !found_fmtp && payload != -1) {
snprintf(buf, sizeof(buf) - 1, "a=fmtp:%d mode-set=2%s",
payload, cr ? "\r\n" : "\n");
buf[sizeof(buf) - 1] = '\0';