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Diffstat (limited to 'openbsc/src/gprs/gb_proxy.c')
-rw-r--r--openbsc/src/gprs/gb_proxy.c190
1 files changed, 15 insertions, 175 deletions
diff --git a/openbsc/src/gprs/gb_proxy.c b/openbsc/src/gprs/gb_proxy.c
index 7a1508ee7..9a9967fce 100644
--- a/openbsc/src/gprs/gb_proxy.c
+++ b/openbsc/src/gprs/gb_proxy.c
@@ -72,91 +72,6 @@ static const struct rate_ctr_group_desc global_ctrg_desc = {
.ctr_desc = global_ctr_description,
};
-static const struct rate_ctr_desc peer_ctr_description[] = {
- { "blocked", "BVC Block " },
- { "unblocked", "BVC Unblock " },
- { "dropped", "BVC blocked, dropped packet " },
- { "inv-nsei", "NSEI mismatch " },
- { "tx-err", "NS Transmission error " },
- { "raid-mod.bss", "RAID patched (BSS )" },
- { "raid-mod.sgsn", "RAID patched (SGSN)" },
- { "apn-mod.sgsn", "APN patched " },
- { "tlli-mod.bss", "TLLI patched (BSS )" },
- { "tlli-mod.sgsn", "TLLI patched (SGSN)" },
- { "ptmsi-mod.bss", "P-TMSI patched (BSS )" },
- { "ptmsi-mod.sgsn","P-TMSI patched (SGSN)" },
- { "mod-crypt-err", "Patch error: encrypted " },
- { "mod-err", "Patch error: other " },
- { "attach-reqs", "Attach Request count " },
- { "attach-rejs", "Attach Reject count " },
- { "tlli-unknown", "TLLI from SGSN unknown " },
- { "tlli-cache", "TLLI cache size " },
-};
-
-static const struct rate_ctr_group_desc peer_ctrg_desc = {
- .group_name_prefix = "gbproxy.peer",
- .group_description = "GBProxy Peer Statistics",
- .num_ctr = ARRAY_SIZE(peer_ctr_description),
- .ctr_desc = peer_ctr_description,
-};
-
-
-/* Find the gbprox_peer by its BVCI */
-static struct gbproxy_peer *peer_by_bvci(struct gbproxy_config *cfg, uint16_t bvci)
-{
- struct gbproxy_peer *peer;
- llist_for_each_entry(peer, &cfg->bts_peers, list) {
- if (peer->bvci == bvci)
- return peer;
- }
- return NULL;
-}
-
-/* Find the gbprox_peer by its NSEI */
-struct gbproxy_peer *gbprox_peer_by_nsei(struct gbproxy_config *cfg, uint16_t nsei)
-{
- struct gbproxy_peer *peer;
- llist_for_each_entry(peer, &cfg->bts_peers, list) {
- if (peer->nsei == nsei)
- return peer;
- }
- return NULL;
-}
-
-/* look-up a peer by its Routeing Area Identification (RAI) */
-static struct gbproxy_peer *peer_by_rai(struct gbproxy_config *cfg, const uint8_t *ra)
-{
- struct gbproxy_peer *peer;
- llist_for_each_entry(peer, &cfg->bts_peers, list) {
- if (!memcmp(peer->ra, ra, 6))
- return peer;
- }
- return NULL;
-}
-
-/* look-up a peer by its Location Area Identification (LAI) */
-static struct gbproxy_peer *peer_by_lai(struct gbproxy_config *cfg, const uint8_t *la)
-{
- struct gbproxy_peer *peer;
- llist_for_each_entry(peer, &cfg->bts_peers, list) {
- if (!memcmp(peer->ra, la, 5))
- return peer;
- }
- return NULL;
-}
-
-/* look-up a peer by its Location Area Code (LAC) */
-static struct gbproxy_peer *peer_by_lac(struct gbproxy_config *cfg, const uint8_t *la)
-{
- struct gbproxy_peer *peer;
- llist_for_each_entry(peer, &cfg->bts_peers, list) {
- if (!memcmp(peer->ra + 3, la + 3, 2))
- return peer;
- }
- return NULL;
-}
-
-
static int check_peer_nsei(struct gbproxy_peer *peer, uint16_t nsei)
{
if (peer->nsei != nsei) {
@@ -170,37 +85,6 @@ static int check_peer_nsei(struct gbproxy_peer *peer, uint16_t nsei)
return 1;
}
-struct gbproxy_peer *gbproxy_peer_alloc(struct gbproxy_config *cfg, uint16_t bvci)
-{
- struct gbproxy_peer *peer;
-
- peer = talloc_zero(tall_bsc_ctx, struct gbproxy_peer);
- if (!peer)
- return NULL;
-
- peer->bvci = bvci;
- peer->ctrg = rate_ctr_group_alloc(peer, &peer_ctrg_desc, bvci);
- peer->cfg = cfg;
-
- llist_add(&peer->list, &cfg->bts_peers);
-
- INIT_LLIST_HEAD(&peer->patch_state.enabled_tllis);
-
- return peer;
-}
-
-void gbproxy_peer_free(struct gbproxy_peer *peer)
-{
- llist_del(&peer->list);
-
- gbproxy_delete_tllis(peer);
-
- rate_ctr_group_free(peer->ctrg);
- peer->ctrg = NULL;
-
- talloc_free(peer);
-}
-
/* strip off the NS header */
static void strip_ns_hdr(struct msgb *msg)
{
@@ -248,32 +132,6 @@ static void gbprox_update_current_raid(uint8_t *raid_enc,
peer->cfg->core_mcc, peer->cfg->core_mnc);
}
-struct gbproxy_peer *peer_by_bssgp_tlv(struct gbproxy_config *cfg, struct tlv_parsed *tp)
-{
- if (TLVP_PRESENT(tp, BSSGP_IE_BVCI)) {
- uint16_t bvci;
-
- bvci = ntohs(tlvp_val16_unal(tp, BSSGP_IE_BVCI));
- if (bvci >= 2)
- return peer_by_bvci(cfg, bvci);
- }
-
- if (TLVP_PRESENT(tp, BSSGP_IE_ROUTEING_AREA)) {
- uint8_t *rai = (uint8_t *)TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA);
- /* Only compare LAC part, since MCC/MNC are possibly patched.
- * Since the LAC of different BSS must be different when
- * MCC/MNC are patched, collisions shouldn't happen. */
- return peer_by_lac(cfg, rai);
- }
-
- if (TLVP_PRESENT(tp, BSSGP_IE_LOCATION_AREA)) {
- uint8_t *lai = (uint8_t *)TLVP_VAL(tp, BSSGP_IE_LOCATION_AREA);
- return peer_by_lac(cfg, lai);
- }
-
- return NULL;
-}
-
uint32_t gbproxy_make_bss_ptmsi(struct gbproxy_peer *peer,
uint32_t sgsn_ptmsi)
{
@@ -348,13 +206,13 @@ static void gbprox_process_bssgp_ul(struct gbproxy_config *cfg,
/* Get peer */
if (!peer && msgb_bvci(msg) >= 2)
- peer = peer_by_bvci(cfg, msgb_bvci(msg));
+ peer = gbproxy_peer_by_bvci(cfg, msgb_bvci(msg));
if (!peer)
- peer = gbprox_peer_by_nsei(cfg, msgb_nsei(msg));
+ peer = gbproxy_peer_by_nsei(cfg, msgb_nsei(msg));
if (!peer)
- peer = peer_by_bssgp_tlv(cfg, &parse_ctx.bssgp_tp);
+ peer = gbproxy_peer_by_bssgp_tlv(cfg, &parse_ctx.bssgp_tp);
if (!peer) {
LOGP(DLLC, LOGL_INFO,
@@ -425,10 +283,10 @@ static void gbprox_process_bssgp_dl(struct gbproxy_config *cfg,
}
if (!peer && msgb_bvci(msg) >= 2)
- peer = peer_by_bvci(cfg, msgb_bvci(msg));
+ peer = gbproxy_peer_by_bvci(cfg, msgb_bvci(msg));
if (!peer)
- peer = peer_by_bssgp_tlv(cfg, &parse_ctx.bssgp_tp);
+ peer = gbproxy_peer_by_bssgp_tlv(cfg, &parse_ctx.bssgp_tp);
if (!peer) {
LOGP(DLLC, LOGL_INFO,
@@ -520,7 +378,7 @@ static int block_unblock_peer(struct gbproxy_config *cfg, uint16_t ptp_bvci, uin
{
struct gbproxy_peer *peer;
- peer = peer_by_bvci(cfg, ptp_bvci);
+ peer = gbproxy_peer_by_bvci(cfg, ptp_bvci);
if (!peer) {
LOGP(DGPRS, LOGL_ERROR, "BVCI=%u: Cannot find BSS\n",
ptp_bvci);
@@ -550,7 +408,7 @@ static int gbprox_relay2bvci(struct gbproxy_config *cfg, struct msgb *msg, uint1
{
struct gbproxy_peer *peer;
- peer = peer_by_bvci(cfg, ptp_bvci);
+ peer = gbproxy_peer_by_bvci(cfg, ptp_bvci);
if (!peer) {
LOGP(DGPRS, LOGL_ERROR, "BVCI=%u: Cannot find BSS\n",
ptp_bvci);
@@ -605,7 +463,7 @@ static int gbprox_rx_sig_from_bss(struct gbproxy_config *cfg,
* BSSGP */
if (!TLVP_PRESENT(&tp, BSSGP_IE_ROUTEING_AREA))
goto err_mand_ie;
- from_peer = gbprox_peer_by_nsei(cfg, nsei);
+ from_peer = gbproxy_peer_by_nsei(cfg, nsei);
if (!from_peer)
goto err_no_peer;
memcpy(from_peer->ra, TLVP_VAL(&tp, BSSGP_IE_ROUTEING_AREA),
@@ -632,7 +490,7 @@ static int gbprox_rx_sig_from_bss(struct gbproxy_config *cfg,
return bssgp_tx_simple_bvci(BSSGP_PDUT_BVC_RESET_ACK,
nsei, 0, ns_bvci);
}
- from_peer = peer_by_bvci(cfg, bvci);
+ from_peer = gbproxy_peer_by_bvci(cfg, bvci);
if (!from_peer) {
/* if a PTP-BVC is reset, and we don't know that
* PTP-BVCI yet, we should allocate a new peer */
@@ -694,12 +552,12 @@ static int gbprox_rx_paging(struct gbproxy_config *cfg, struct msgb *msg, struct
bvci);
errctr = GBPROX_GLOB_CTR_OTHER_ERR;
} else if (TLVP_PRESENT(tp, BSSGP_IE_ROUTEING_AREA)) {
- peer = peer_by_rai(cfg, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA));
+ peer = gbproxy_peer_by_rai(cfg, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA));
LOGPC(DGPRS, LOGL_INFO, "routing by RAI to peer BVCI=%u\n",
peer ? peer->bvci : -1);
errctr = GBPROX_GLOB_CTR_INV_RAI;
} else if (TLVP_PRESENT(tp, BSSGP_IE_LOCATION_AREA)) {
- peer = peer_by_lai(cfg, TLVP_VAL(tp, BSSGP_IE_LOCATION_AREA));
+ peer = gbproxy_peer_by_lai(cfg, TLVP_VAL(tp, BSSGP_IE_LOCATION_AREA));
LOGPC(DGPRS, LOGL_INFO, "routing by LAI to peer BVCI=%u\n",
peer ? peer->bvci : -1);
errctr = GBPROX_GLOB_CTR_INV_LAI;
@@ -734,7 +592,7 @@ static int rx_reset_from_sgsn(struct gbproxy_config *cfg,
if (ptp_bvci >= 2) {
/* A reset for a PTP BVC was received, forward it to its
* respective peer */
- peer = peer_by_bvci(cfg, ptp_bvci);
+ peer = gbproxy_peer_by_bvci(cfg, ptp_bvci);
if (!peer) {
LOGP(DGPRS, LOGL_ERROR, "NSEI=%u BVCI=%u: Cannot find BSS\n",
nsei, ptp_bvci);
@@ -830,7 +688,7 @@ static int gbprox_rx_sig_from_sgsn(struct gbproxy_config *cfg,
/* RAI IE is mandatory */
if (!TLVP_PRESENT(&tp, BSSGP_IE_ROUTEING_AREA))
goto err_mand_ie;
- peer = peer_by_rai(cfg, TLVP_VAL(&tp, BSSGP_IE_ROUTEING_AREA));
+ peer = gbproxy_peer_by_rai(cfg, TLVP_VAL(&tp, BSSGP_IE_ROUTEING_AREA));
if (!peer)
goto err_no_peer;
rc = gbprox_relay2peer(msg, peer, ns_bvci);
@@ -901,7 +759,7 @@ int gbprox_rcvmsg(struct gbproxy_config *cfg, struct msgb *msg, uint16_t nsei,
else
rc = gbprox_rx_sig_from_bss(cfg, msg, nsei, ns_bvci);
} else {
- peer = peer_by_bvci(cfg, ns_bvci);
+ peer = gbproxy_peer_by_bvci(cfg, ns_bvci);
/* All other BVCI are PTP and thus can be simply forwarded */
if (!remote_end_is_sgsn) {
@@ -976,7 +834,7 @@ int gbprox_signal(unsigned int subsys, unsigned int signal,
if (!nsvc->remote_end_is_sgsn) {
/* from BSS to SGSN */
- peer = gbprox_peer_by_nsei(cfg, nsvc->nsei);
+ peer = gbproxy_peer_by_nsei(cfg, nsvc->nsei);
if (!peer) {
LOGP(DGPRS, LOGL_NOTICE, "signal %u for unknown peer "
"NSEI=%u/NSVCI=%u\n", signal, nsvc->nsei,
@@ -1033,24 +891,6 @@ void gbprox_reset(struct gbproxy_config *cfg)
gbproxy_init_config(cfg);
}
-int gbprox_cleanup_peers(struct gbproxy_config *cfg, uint16_t nsei, uint16_t bvci)
-{
- int counter = 0;
- struct gbproxy_peer *peer, *tmp;
-
- llist_for_each_entry_safe(peer, tmp, &cfg->bts_peers, list) {
- if (peer->nsei != nsei)
- continue;
- if (bvci && peer->bvci != bvci)
- continue;
-
- gbproxy_peer_free(peer);
- counter += 1;
- }
-
- return counter;
-}
-
int gbproxy_init_config(struct gbproxy_config *cfg)
{
struct timespec tp;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 08:46:43 +0000