diff options
| -rw-r--r-- | src/hnbgw_cn.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/hnbgw_cn.c b/src/hnbgw_cn.c index 8124ce5..e967260 100644 --- a/src/hnbgw_cn.c +++ b/src/hnbgw_cn.c @@ -240,6 +240,31 @@ static int handle_cn_ranap(struct hnbgw_cnlink *cnlink, const uint8_t *data, return rc; } +static bool pc_and_ssn_match(const struct osmo_sccp_addr *a, const struct osmo_sccp_addr *b) +{ + return (a == b) + || ((a->pc == b->pc) + && (a->ssn == b->ssn)); +} + +static int classify_cn_remote_addr(const struct hnb_gw *gw, + const struct osmo_sccp_addr *cn_remote_addr, + bool *is_ps) +{ + if (pc_and_ssn_match(cn_remote_addr, &gw->sccp.remote_addr_cs)) { + if (is_ps) + *is_ps = false; + return 0; + } + if (pc_and_ssn_match(cn_remote_addr, &gw->sccp.remote_addr_ps)) { + if (is_ps) + *is_ps = true; + return 0; + } + LOGP(DMAIN, LOGL_ERROR, "Unexpected remote address, matches neither CS nor PS address: %s\n", + osmo_sccp_addr_dump(cn_remote_addr)); + return -1; +} static int handle_cn_unitdata(struct hnbgw_cnlink *cnlink, const struct osmo_scu_unitdata_param *param, @@ -251,6 +276,9 @@ static int handle_cn_unitdata(struct hnbgw_cnlink *cnlink, return -1; } + if (classify_cn_remote_addr(cnlink->gw, ¶m->calling_addr, NULL) < 0) + return -1; + return handle_cn_ranap(cnlink, msgb_l2(oph->msg), msgb_l2len(oph->msg)); } |