diff options
Diffstat (limited to 'openbsc/src/osmo-bsc_nat/bsc_nat.c')
| -rw-r--r-- | openbsc/src/osmo-bsc_nat/bsc_nat.c | 55 |
1 files changed, 45 insertions, 10 deletions
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat.c b/openbsc/src/osmo-bsc_nat/bsc_nat.c index 2146da1c4..ba273417a 100644 --- a/openbsc/src/osmo-bsc_nat/bsc_nat.c +++ b/openbsc/src/osmo-bsc_nat/bsc_nat.c @@ -549,6 +549,50 @@ send_refuse: bsc_write(bsc, refuse, IPAC_PROTO_SCCP); } +static void bsc_nat_send_paging(struct bsc_connection *bsc, struct msgb *msg) +{ + if (bsc->cfg->forbid_paging) { + LOGP(DNAT, LOGL_DEBUG, "Paging forbidden for BTS: %d\n", bsc->cfg->nr); + return; + } + + bsc_send_data(bsc, msg->l2h, msgb_l2len(msg), IPAC_PROTO_SCCP); +} + +static void bsc_nat_handle_paging(struct bsc_nat *nat, struct msgb *msg) +{ + struct bsc_connection *bsc; + const uint8_t *paging_start; + int paging_length, i; + + if (bsc_nat_find_paging(msg, &paging_start, &paging_length) != 0) { + LOGP(DNAT, LOGL_ERROR, "Could not parse paging message.\n"); + return; + } + + /* This is quite expensive now */ + for (i = 0; i < paging_length; i += 2) { + unsigned int _lac = ntohs(*(unsigned int *) &paging_start[i]); + unsigned int paged = 0; + llist_for_each_entry(bsc, &nat->bsc_connections, list_entry) { + if (!bsc->cfg) + continue; + if (!bsc->authenticated) + continue; + if (!bsc_config_handles_lac(bsc->cfg, _lac)) + continue; + bsc_nat_send_paging(bsc, msg); + paged += 1; + } + + /* highlight a possible config issue */ + if (paged == 0) + LOGP(DNAT, LOGL_ERROR, "No BSC for LAC %d/0x%d\n", _lac, _lac); + + } +} + + /* * Update the auth status. This can be either a CIPHER MODE COMAMND or * a CM Serivce Accept. Maybe also LU Accept or such in the future. @@ -677,16 +721,7 @@ send_to_all: * message and then send it to the authenticated messages... */ if (parsed->ipa_proto == IPAC_PROTO_SCCP && parsed->gsm_type == BSS_MAP_MSG_PAGING) { - int lac; - bsc = bsc_nat_find_bsc(nat, msg, &lac); - if (bsc && bsc->cfg->forbid_paging) - LOGP(DNAT, LOGL_DEBUG, "Paging forbidden for BTS: %d\n", bsc->cfg->nr); - else if (bsc) - bsc_send_data(bsc, msg->l2h, msgb_l2len(msg), parsed->ipa_proto); - else if (lac != -1) - LOGP(DNAT, LOGL_ERROR, "Could not determine BSC for paging on lac: %d/0x%x\n", - lac, lac); - + bsc_nat_handle_paging(nat, msg); goto exit; } /* currently send this to every BSC connected */ |