diff options
Diffstat (limited to 'openbsc/src')
-rw-r--r-- | openbsc/src/nat/bsc_sccp.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/openbsc/src/nat/bsc_sccp.c b/openbsc/src/nat/bsc_sccp.c index 59d0cd574..2edfc5983 100644 --- a/openbsc/src/nat/bsc_sccp.c +++ b/openbsc/src/nat/bsc_sccp.c @@ -85,6 +85,28 @@ int create_sccp_src_ref(struct bsc_connection *bsc, struct msgb *msg, struct bsc { struct sccp_connections *conn; + /* Some commercial BSCs like to reassign there SRC ref */ + llist_for_each_entry(conn, &bsc->nat->sccp_connections, list_entry) { + if (conn->bsc != bsc) + continue; + if (memcmp(&conn->real_ref, parsed->src_local_ref, sizeof(conn->real_ref)) != 0) + continue; + + /* the BSC has reassigned the SRC ref and we failed to keep track */ + memset(&conn->remote_ref, 0, sizeof(conn->remote_ref)); + if (assign_src_local_reference(&conn->patched_ref, bsc->nat) != 0) { + LOGP(DNAT, LOGL_ERROR, "BSC %d reused src ref: %d and we failed to generate a new id.\n", + bsc->cfg->nr, sccp_src_ref_to_int(parsed->src_local_ref)); + llist_del(&conn->list_entry); + talloc_free(conn); + return -1; + } else { + bsc_mgcp_clear(conn); + return 0; + } + } + + conn = talloc_zero(bsc->nat, struct sccp_connections); if (!conn) { LOGP(DNAT, LOGL_ERROR, "Memory allocation failure.\n"); |