diff options
Diffstat (limited to 'openbsc/src/gprs/gb_proxy.c')
| -rw-r--r-- | openbsc/src/gprs/gb_proxy.c | 539 |
1 files changed, 445 insertions, 94 deletions
diff --git a/openbsc/src/gprs/gb_proxy.c b/openbsc/src/gprs/gb_proxy.c index 569104659..3c415299a 100644 --- a/openbsc/src/gprs/gb_proxy.c +++ b/openbsc/src/gprs/gb_proxy.c @@ -1,7 +1,8 @@ /* NS-over-IP proxy */ /* (C) 2010 by Harald Welte <laforge@gnumonks.org> - * (C) 2010 by On-Waves + * (C) 2010-2013 by On-Waves + * (C) 2013 by Holger Hans Peter Freyther * All Rights Reserved * * This program is free software; you can redistribute it and/or modify @@ -31,25 +32,91 @@ #include <osmocom/core/talloc.h> #include <osmocom/core/select.h> +#include <osmocom/core/rate_ctr.h> + +#include <osmocom/vty/misc.h> + +#include <osmocom/gprs/gprs_ns.h> +#include <osmocom/gprs/gprs_bssgp.h> #include <openbsc/signal.h> #include <openbsc/debug.h> -#include <openbsc/gprs_ns.h> -#include <openbsc/gprs_bssgp.h> #include <openbsc/gb_proxy.h> -static uint16_t _tlvp_val16_unal(const struct tlv_parsed *tp, int pos) +enum gbprox_global_ctr { + GBPROX_GLOB_CTR_INV_BVCI, + GBPROX_GLOB_CTR_INV_LAC, + GBPROX_GLOB_CTR_INV_RAC, + GBPROX_GLOB_CTR_INV_NSEI, + GBPROX_GLOB_CTR_PROTO_ERR_BSS, + GBPROX_GLOB_CTR_PROTO_ERR_SGSN, + GBPROX_GLOB_CTR_NOT_SUPPORTED_BSS, + GBPROX_GLOB_CTR_NOT_SUPPORTED_SGSN, + GBPROX_GLOB_CTR_RESTART_RESET_SGSN, + GBPROX_GLOB_CTR_TX_ERR_SGSN, + GBPROX_GLOB_CTR_OTHER_ERR, +}; + +static const struct rate_ctr_desc global_ctr_description[] = { + { "inv-bvci", "Invalid BVC Identifier " }, + { "inv-lac", "Invalid Location Area Code " }, + { "inv-rac", "Invalid Routing Area Code " }, + { "inv-nsei", "No BVC established for NSEI " }, + { "proto-err.bss", "BSSGP protocol error (BSS )" }, + { "proto-err.sgsn", "BSSGP protocol error (SGSN)" }, + { "not-supp.bss", "Feature not supported (BSS )" }, + { "not-supp.sgsn", "Feature not supported (SGSN)" }, + { "restart.sgsn", "Restarted RESET procedure (SGSN)" }, + { "tx-err.sgsn", "NS Transmission error (SGSN)" }, + { "error", "Other error " }, +}; + +static const struct rate_ctr_group_desc global_ctrg_desc = { + .group_name_prefix = "gbproxy.global", + .group_description = "GBProxy Global Statistics", + .num_ctr = ARRAY_SIZE(global_ctr_description), + .ctr_desc = global_ctr_description, +}; + +static struct rate_ctr_group *global_ctrg = NULL; + +static struct rate_ctr_group *get_global_ctrg() { - uint16_t res; - memcpy(&res, TLVP_VAL(tp, pos), sizeof(res)); - return res; + if (global_ctrg) + return global_ctrg; + + global_ctrg = rate_ctr_group_alloc(tall_bsc_ctx, &global_ctrg_desc, 0); + return global_ctrg; } +enum gbprox_peer_ctr { + GBPROX_PEER_CTR_BLOCKED, + GBPROX_PEER_CTR_UNBLOCKED, + GBPROX_PEER_CTR_DROPPED, + GBPROX_PEER_CTR_INV_NSEI, + GBPROX_PEER_CTR_TX_ERR, +}; + +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 " }, +}; + +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, +}; + struct gbprox_peer { struct llist_head list; - /* NS-VC over which we send/receive data to this BVC */ - struct gprs_nsvc *nsvc; + /* NSEI of the peer entity */ + uint16_t nsei; /* BVCI used for Point-to-Point to this peer */ uint16_t bvci; @@ -57,6 +124,9 @@ struct gbprox_peer { /* Routeing Area that this peer is part of (raw 04.08 encoding) */ uint8_t ra[6]; + + /* Counter */ + struct rate_ctr_group *ctrg; }; /* Linked list of all Gb peers (except SGSN) */ @@ -73,11 +143,12 @@ static struct gbprox_peer *peer_by_bvci(uint16_t bvci) return NULL; } -static struct gbprox_peer *peer_by_nsvc(struct gprs_nsvc *nsvc) +/* Find the gbprox_peer by its NSEI */ +static struct gbprox_peer *peer_by_nsei(uint16_t nsei) { struct gbprox_peer *peer; llist_for_each_entry(peer, &gbprox_bts_peers, list) { - if (peer->nsvc == nsvc) + if (peer->nsei == nsei) return peer; } return NULL; @@ -105,6 +176,19 @@ static struct gbprox_peer *peer_by_lac(const uint8_t *la) return NULL; } +static int check_peer_nsei(struct gbprox_peer *peer, uint16_t nsei) +{ + if (peer->nsei != nsei) { + LOGP(DGPRS, LOGL_NOTICE, "Peer entry doesn't match current NSEI " + "BVCI=%u via NSEI=%u (expected NSEI=%u)\n", + peer->bvci, nsei, peer->nsei); + rate_ctr_inc(&peer->ctrg->ctr[GBPROX_PEER_CTR_INV_NSEI]); + return 0; + } + + return 1; +} + static struct gbprox_peer *peer_alloc(uint16_t bvci) { struct gbprox_peer *peer; @@ -114,6 +198,8 @@ static struct gbprox_peer *peer_alloc(uint16_t bvci) return NULL; peer->bvci = bvci; + peer->ctrg = rate_ctr_group_alloc(peer, &peer_ctrg_desc, bvci); + llist_add(&peer->list, &gbprox_bts_peers); return peer; @@ -121,6 +207,7 @@ static struct gbprox_peer *peer_alloc(uint16_t bvci) static void peer_free(struct gbprox_peer *peer) { + rate_ctr_group_free(peer->ctrg); llist_del(&peer->list); talloc_free(peer); } @@ -128,7 +215,7 @@ static void peer_free(struct gbprox_peer *peer) /* FIXME: this needs to go to libosmocore/msgb.c */ static struct msgb *msgb_copy(const struct msgb *msg, const char *name) { - struct openbsc_msgb_cb *old_cb, *new_cb; + struct libgb_msgb_cb *old_cb, *new_cb; struct msgb *new_msg; new_msg = msgb_alloc(msg->data_len, name); @@ -150,8 +237,8 @@ static struct msgb *msgb_copy(const struct msgb *msg, const char *name) new_msg->l4h = new_msg->_data + (msg->l4h - msg->_data); /* copy GB specific data */ - old_cb = OBSC_MSGB_CB(msg); - new_cb = OBSC_MSGB_CB(new_msg); + old_cb = LIBGB_MSGB_CB(msg); + new_cb = LIBGB_MSGB_CB(new_msg); new_cb->bssgph = new_msg->_data + (old_cb->bssgph - msg->_data); new_cb->llch = new_msg->_data + (old_cb->llch - msg->_data); @@ -179,6 +266,7 @@ static int gbprox_relay2sgsn(struct msgb *old_msg, uint16_t ns_bvci) /* create a copy of the message so the old one can * be free()d safely when we return from gbprox_rcvmsg() */ struct msgb *msg = msgb_copy(old_msg, "msgb_relay2sgsn"); + int rc; DEBUGP(DGPRS, "NSEI=%u proxying BTS->SGSN (NS_BVCI=%u, NSEI=%u)\n", msgb_nsei(msg), ns_bvci, gbcfg.nsip_sgsn_nsei); @@ -188,7 +276,11 @@ static int gbprox_relay2sgsn(struct msgb *old_msg, uint16_t ns_bvci) strip_ns_hdr(msg); - return gprs_ns_sendmsg(bssgp_nsi, msg); + rc = gprs_ns_sendmsg(bssgp_nsi, msg); + if (rc < 0) + rate_ctr_inc(&get_global_ctrg()->ctr[GBPROX_GLOB_CTR_TX_ERR_SGSN]); + + return rc; } /* feed a message down the NS-VC associated with the specified peer */ @@ -198,17 +290,22 @@ static int gbprox_relay2peer(struct msgb *old_msg, struct gbprox_peer *peer, /* create a copy of the message so the old one can * be free()d safely when we return from gbprox_rcvmsg() */ struct msgb *msg = msgb_copy(old_msg, "msgb_relay2peer"); + int rc; DEBUGP(DGPRS, "NSEI=%u proxying SGSN->BSS (NS_BVCI=%u, NSEI=%u)\n", - msgb_nsei(msg), ns_bvci, peer->nsvc->nsei); + msgb_nsei(msg), ns_bvci, peer->nsei); msgb_bvci(msg) = ns_bvci; - msgb_nsei(msg) = peer->nsvc->nsei; + msgb_nsei(msg) = peer->nsei; /* Strip the old NS header, it will be replaced with a new one */ strip_ns_hdr(msg); - return gprs_ns_sendmsg(bssgp_nsi, msg); + rc = gprs_ns_sendmsg(bssgp_nsi, msg); + if (rc < 0) + rate_ctr_inc(&peer->ctrg->ctr[GBPROX_PEER_CTR_TX_ERR]); + + return rc; } static int block_unblock_peer(uint16_t ptp_bvci, uint8_t pdu_type) @@ -219,15 +316,18 @@ static int block_unblock_peer(uint16_t ptp_bvci, uint8_t pdu_type) if (!peer) { LOGP(DGPRS, LOGL_ERROR, "BVCI=%u: Cannot find BSS\n", ptp_bvci); + rate_ctr_inc(&get_global_ctrg()->ctr[GBPROX_GLOB_CTR_INV_BVCI]); return -ENOENT; } switch (pdu_type) { case BSSGP_PDUT_BVC_BLOCK_ACK: peer->blocked = 1; + rate_ctr_inc(&peer->ctrg->ctr[GBPROX_PEER_CTR_BLOCKED]); break; case BSSGP_PDUT_BVC_UNBLOCK_ACK: peer->blocked = 0; + rate_ctr_inc(&peer->ctrg->ctr[GBPROX_PEER_CTR_UNBLOCKED]); break; default: break; @@ -246,14 +346,20 @@ static int gbprox_relay2bvci(struct msgb *msg, uint16_t ptp_bvci, if (!peer) { LOGP(DGPRS, LOGL_ERROR, "BVCI=%u: Cannot find BSS\n", ptp_bvci); + rate_ctr_inc(&get_global_ctrg()->ctr[GBPROX_GLOB_CTR_INV_BVCI]); return -ENOENT; } return gbprox_relay2peer(msg, peer, ns_bvci); } +int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) +{ + return 0; +} + /* Receive an incoming signalling message from a BSS-side NS-VC */ -static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, +static int gbprox_rx_sig_from_bss(struct msgb *msg, uint16_t nsei, uint16_t ns_bvci) { struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); @@ -265,7 +371,7 @@ static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, if (ns_bvci != 0 && ns_bvci != 1) { LOGP(DGPRS, LOGL_NOTICE, "NSEI=%u BVCI=%u is not signalling\n", - nsvc->nsei, ns_bvci); + nsei, ns_bvci); return -EINVAL; } @@ -274,7 +380,7 @@ static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, if (pdu_type == BSSGP_PDUT_UL_UNITDATA || pdu_type == BSSGP_PDUT_DL_UNITDATA) { LOGP(DGPRS, LOGL_NOTICE, "NSEI=%u UNITDATA not allowed in " - "signalling\n", nsvc->nsei); + "signalling\n", nsei); return -EINVAL; } @@ -290,16 +396,16 @@ static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, * the correct BSSGP */ if (!TLVP_PRESENT(&tp, BSSGP_IE_ROUTEING_AREA)) goto err_mand_ie; - from_peer = peer_by_nsvc(nsvc); + from_peer = peer_by_nsei(nsei); if (!from_peer) goto err_no_peer; memcpy(from_peer->ra, TLVP_VAL(&tp, BSSGP_IE_ROUTEING_AREA), sizeof(from_peer->ra)); gsm48_parse_ra(&raid, from_peer->ra); LOGP(DGPRS, LOGL_INFO, "NSEI=%u BSSGP SUSPEND/RESUME " - "RAC snooping: RAC %u-%u-%u-%u behind BVCI=%u, " - "NSVCI=%u\n",nsvc->nsei, raid.mcc, raid.mnc, raid.lac, - raid.rac , from_peer->bvci, nsvc->nsvci); + "RAC snooping: RAC %u-%u-%u-%u behind BVCI=%u\n", + nsei, raid.mcc, raid.mnc, raid.lac, + raid.rac , from_peer->bvci); /* FIXME: This only supports one BSS per RA */ break; case BSSGP_PDUT_BVC_RESET: @@ -307,26 +413,29 @@ static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, * don't want the SGSN to reset, as the signalling endpoint * is common for all point-to-point BVCs (and thus all BTS) */ if (TLVP_PRESENT(&tp, BSSGP_IE_BVCI)) { - uint16_t bvci = ntohs(_tlvp_val16_unal(&tp, BSSGP_IE_BVCI)); + uint16_t bvci = ntohs(tlvp_val16_unal(&tp, BSSGP_IE_BVCI)); LOGP(DGPRS, LOGL_INFO, "NSEI=%u Rx BVC RESET (BVCI=%u)\n", - nsvc->nsei, bvci); + nsei, bvci); if (bvci == 0) { /* FIXME: only do this if SGSN is alive! */ LOGP(DGPRS, LOGL_INFO, "NSEI=%u Tx fake " - "BVC RESET ACK of BVCI=0\n", nsvc->nsei); + "BVC RESET ACK of BVCI=0\n", nsei); return bssgp_tx_simple_bvci(BSSGP_PDUT_BVC_RESET_ACK, - nsvc->nsei, 0, ns_bvci); + nsei, 0, ns_bvci); } from_peer = peer_by_bvci(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 */ LOGP(DGPRS, LOGL_INFO, "Allocationg new peer for " - "BVCI=%u via NSVCI=%u/NSEI=%u\n", bvci, - nsvc->nsvci, nsvc->nsei); + "BVCI=%u via NSEI=%u\n", bvci, nsei); from_peer = peer_alloc(bvci); - from_peer->nsvc = nsvc; + from_peer->nsei = nsei; } + + if (!check_peer_nsei(from_peer, nsei)) + from_peer->nsei = nsei; + if (TLVP_PRESENT(&tp, BSSGP_IE_CELL_ID)) { struct gprs_ra_id raid; /* We have a Cell Identifier present in this @@ -338,7 +447,7 @@ static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, sizeof(from_peer->ra)); gsm48_parse_ra(&raid, from_peer->ra); LOGP(DGPRS, LOGL_INFO, "NSEI=%u/BVCI=%u " - "Cell ID %u-%u-%u-%u\n", nsvc->nsei, + "Cell ID %u-%u-%u-%u\n", nsei, bvci, raid.mcc, raid.mnc, raid.lac, raid.rac); } @@ -350,41 +459,48 @@ static int gbprox_rx_sig_from_bss(struct msgb *msg, struct gprs_nsvc *nsvc, * SGSN */ return gbprox_relay2sgsn(msg, ns_bvci); err_no_peer: - LOGP(DGPRS, LOGL_ERROR, "NSEI=%u(BSS) cannot find peer based on RAC\n", - nsvc->nsei); + LOGP(DGPRS, LOGL_ERROR, "NSEI=%u(BSS) cannot find peer based on NSEI\n", + nsei); + rate_ctr_inc(&get_global_ctrg()->ctr[GBPROX_GLOB_CTR_INV_NSEI]); return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg); err_mand_ie: LOGP(DGPRS, LOGL_ERROR, "NSEI=%u(BSS) missing mandatory RA IE\n", - nsvc->nsei); + nsei); + rate_ctr_inc(&get_global_ctrg()->ctr[GBPROX_GLOB_CTR_PROTO_ERR_BSS]); return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); } /* Receive paging request from SGSN, we need to relay to proper BSS */ static int gbprox_rx_paging(struct msgb *msg, struct tlv_parsed *tp, - struct gprs_nsvc *nsvc, uint16_t ns_bvci) + uint32_t nsei, uint16_t ns_bvci) { struct gbprox_peer *peer = NULL; + int errctr = GBPROX_GLOB_CTR_PROTO_ERR_SGSN; LOGP(DGPRS, LOGL_INFO, "NSEI=%u(SGSN) BSSGP PAGING ", - nsvc->nsei); + nsei); if (TLVP_PRESENT(tp, BSSGP_IE_BVCI)) { - uint16_t bvci = ntohs(_tlvp_val16_unal(tp, BSSGP_IE_BVCI)); + uint16_t bvci = ntohs(tlvp_val16_unal(tp, BSSGP_IE_BVCI)); LOGPC(DGPRS, LOGL_INFO, "routing by BVCI to peer BVCI=%u\n", bvci); + errctr = GBPROX_GLOB_CTR_OTHER_ERR; } else if (TLVP_PRESENT(tp, BSSGP_IE_ROUTEING_AREA)) { peer = peer_by_rac(TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA)); LOGPC(DGPRS, LOGL_INFO, "routing by RAC to peer BVCI=%u\n", peer ? peer->bvci : -1); + errctr = GBPROX_GLOB_CTR_INV_RAC; } else if (TLVP_PRESENT(tp, BSSGP_IE_LOCATION_AREA)) { peer = peer_by_lac(TLVP_VAL(tp, BSSGP_IE_LOCATION_AREA)); LOGPC(DGPRS, LOGL_INFO, "routing by LAC to peer BVCI=%u\n", peer ? peer->bvci : -1); + errctr = GBPROX_GLOB_CTR_INV_LAC; } else LOGPC(DGPRS, LOGL_INFO, "\n"); if (!peer) { LOGP(DGPRS, LOGL_ERROR, "NSEI=%u(SGSN) BSSGP PAGING: " - "unable to route, missing IE\n", nsvc->nsei); + "unable to route, missing IE\n", nsei); + rate_ctr_inc(&get_global_ctrg()->ctr[errctr]); return -EINVAL; } return gbprox_relay2peer(msg, peer, ns_bvci); @@ -392,16 +508,18 @@ static int gbprox_rx_paging(struct msgb *msg, struct tlv_parsed *tp, /* Receive an incoming BVC-RESET message from the SGSN */ static int rx_reset_from_sgsn(struct msgb *msg, struct tlv_parsed *tp, - struct gprs_nsvc *nsvc, uint16_t ns_bvci) + uint32_t nsei, uint16_t ns_bvci) { struct gbprox_peer *peer; uint16_t ptp_bvci; if (!TLVP_PRESENT(tp, BSSGP_IE_BVCI)) { + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_PROTO_ERR_SGSN]); return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); } - ptp_bvci = ntohs(_tlvp_val16_unal(tp, BSSGP_IE_BVCI)); + ptp_bvci = ntohs(tlvp_val16_unal(tp, BSSGP_IE_BVCI)); if (ptp_bvci >= 2) { /* A reset for a PTP BVC was received, forward it to its @@ -409,7 +527,9 @@ static int rx_reset_from_sgsn(struct msgb *msg, struct tlv_parsed *tp, peer = peer_by_bvci(ptp_bvci); if (!peer) { LOGP(DGPRS, LOGL_ERROR, "NSEI=%u BVCI=%u: Cannot find BSS\n", - nsvc->nsei, ptp_bvci); + nsei, ptp_bvci); + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_INV_BVCI]); return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg); } @@ -427,7 +547,7 @@ static int rx_reset_from_sgsn(struct msgb *msg, struct tlv_parsed *tp, } /* Receive an incoming signalling message from the SGSN-side NS-VC */ -static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, +static int gbprox_rx_sig_from_sgsn(struct msgb *msg, uint32_t nsei, uint16_t ns_bvci) { struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); @@ -440,7 +560,7 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, if (ns_bvci != 0 && ns_bvci != 1) { LOGP(DGPRS, LOGL_NOTICE, "NSEI=%u(SGSN) BVCI=%u is not " - "signalling\n", nsvc->nsei, ns_bvci); + "signalling\n", nsei, ns_bvci); /* FIXME: Send proper error message */ return -EINVAL; } @@ -450,7 +570,7 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, if (pdu_type == BSSGP_PDUT_UL_UNITDATA || pdu_type == BSSGP_PDUT_DL_UNITDATA) { LOGP(DGPRS, LOGL_NOTICE, "NSEI=%u(SGSN) UNITDATA not allowed in " - "signalling\n", nsvc->nsei); + "signalling\n", nsei); return bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); } @@ -458,25 +578,25 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, switch (pdu_type) { case BSSGP_PDUT_BVC_RESET: - rc = rx_reset_from_sgsn(msg, &tp, nsvc, ns_bvci); + rc = rx_reset_from_sgsn(msg, &tp, nsei, ns_bvci); break; case BSSGP_PDUT_FLUSH_LL: case BSSGP_PDUT_BVC_RESET_ACK: /* simple case: BVCI IE is mandatory */ if (!TLVP_PRESENT(&tp, BSSGP_IE_BVCI)) goto err_mand_ie; - bvci = ntohs(_tlvp_val16_unal(&tp, BSSGP_IE_BVCI)); + bvci = ntohs(tlvp_val16_unal(&tp, BSSGP_IE_BVCI)); rc = gbprox_relay2bvci(msg, bvci, ns_bvci); break; case BSSGP_PDUT_PAGING_PS: case BSSGP_PDUT_PAGING_CS: /* process the paging request (LAC/RAC lookup) */ - rc = gbprox_rx_paging(msg, &tp, nsvc, ns_bvci); + rc = gbprox_rx_paging(msg, &tp, nsei, ns_bvci); break; case BSSGP_PDUT_STATUS: /* Some exception has occurred */ LOGP(DGPRS, LOGL_NOTICE, - "NSEI=%u(SGSN) BSSGP STATUS ", nsvc->nsei); + "NSEI=%u(SGSN) BSSGP STATUS ", nsei); if (!TLVP_PRESENT(&tp, BSSGP_IE_CAUSE)) { LOGPC(DGPRS, LOGL_NOTICE, "\n"); goto err_mand_ie; @@ -485,7 +605,7 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, "cause=0x%02x(%s) ", *TLVP_VAL(&tp, BSSGP_IE_CAUSE), bssgp_cause_str(*TLVP_VAL(&tp, BSSGP_IE_CAUSE))); if (TLVP_PRESENT(&tp, BSSGP_IE_BVCI)) { - uint16_t bvci = _tlvp_val16_unal(&tp, BSSGP_IE_BVCI); + uint16_t bvci = tlvp_val16_unal(&tp, BSSGP_IE_BVCI); LOGPC(DGPRS, LOGL_NOTICE, "BVCI=%u\n", ntohs(bvci)); } else @@ -508,12 +628,14 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, case BSSGP_PDUT_BVC_UNBLOCK_ACK: if (!TLVP_PRESENT(&tp, BSSGP_IE_BVCI)) goto err_mand_ie; - bvci = ntohs(_tlvp_val16_unal(&tp, BSSGP_IE_BVCI)); + bvci = ntohs(tlvp_val16_unal(&tp, BSSGP_IE_BVCI)); if (bvci == 0) { LOGP(DGPRS, LOGL_NOTICE, "NSEI=%u(SGSN) BSSGP " - "%sBLOCK_ACK for signalling BVCI ?!?\n", nsvc->nsei, + "%sBLOCK_ACK for signalling BVCI ?!?\n", nsei, pdu_type == BSSGP_PDUT_BVC_UNBLOCK_ACK ? "UN":""); /* should we send STATUS ? */ + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_INV_BVCI]); } else { /* Mark BVC as (un)blocked */ block_unblock_peer(bvci, pdu_type); @@ -522,12 +644,16 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, break; case BSSGP_PDUT_SGSN_INVOKE_TRACE: LOGP(DGPRS, LOGL_ERROR, - "NSEI=%u(SGSN) BSSGP INVOKE TRACE not supported\n",nsvc->nsei); + "NSEI=%u(SGSN) BSSGP INVOKE TRACE not supported\n",nsei); + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_NOT_SUPPORTED_SGSN]); rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg); break; default: LOGP(DGPRS, LOGL_NOTICE, "BSSGP PDU type 0x%02x unknown\n", pdu_type); + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_PROTO_ERR_SGSN]); rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); break; } @@ -535,44 +661,55 @@ static int gbprox_rx_sig_from_sgsn(struct msgb *msg, struct gprs_nsvc *nsvc, return rc; err_mand_ie: LOGP(DGPRS, LOGL_ERROR, "NSEI=%u(SGSN) missing mandatory IE\n", - nsvc->nsei); + nsei); + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_PROTO_ERR_SGSN]); return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); err_no_peer: LOGP(DGPRS, LOGL_ERROR, "NSEI=%u(SGSN) cannot find peer based on RAC\n", - nsvc->nsei); + nsei); + rate_ctr_inc(&get_global_ctrg()-> ctr[GBPROX_GLOB_CTR_INV_RAC]); return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg); } /* Main input function for Gb proxy */ -int gbprox_rcvmsg(struct msgb *msg, struct gprs_nsvc *nsvc, uint16_t ns_bvci) +int gbprox_rcvmsg(struct msgb *msg, uint16_t nsei, uint16_t ns_bvci, uint16_t nsvci) { int rc; struct gbprox_peer *peer; + int remote_end_is_sgsn = nsei == gbcfg.nsip_sgsn_nsei; /* Only BVCI=0 messages need special treatment */ if (ns_bvci == 0 || ns_bvci == 1) { - if (nsvc->remote_end_is_sgsn) - rc = gbprox_rx_sig_from_sgsn(msg, nsvc, ns_bvci); + if (remote_end_is_sgsn) + rc = gbprox_rx_sig_from_sgsn(msg, nsei, ns_bvci); else - rc = gbprox_rx_sig_from_bss(msg, nsvc, ns_bvci); + rc = gbprox_rx_sig_from_bss(msg, nsei, ns_bvci); } else { + peer = peer_by_bvci(ns_bvci); + /* All other BVCI are PTP and thus can be simply forwarded */ - if (!nsvc->remote_end_is_sgsn) { + if (!remote_end_is_sgsn) { + if (peer) + check_peer_nsei(peer, nsei); return gbprox_relay2sgsn(msg, ns_bvci); } + /* else: SGSN -> BSS direction */ - peer = peer_by_bvci(ns_bvci); if (!peer) { - LOGP(DGPRS, LOGL_INFO, "Allocationg new peer for " - "BVCI=%u via NSVC=%u/NSEI=%u\n", ns_bvci, - nsvc->nsvci, nsvc->nsei); - peer = peer_alloc(ns_bvci); - peer->nsvc = nsvc; + LOGP(DGPRS, LOGL_INFO, "Didn't find peer for " + "BVCI=%u for message from NSVC=%u/NSEI=%u (SGSN)\n", + ns_bvci, nsvci, nsei); + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_INV_BVCI]); + return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, + &ns_bvci, msg); } if (peer->blocked) { LOGP(DGPRS, LOGL_NOTICE, "Dropping PDU for " "blocked BVCI=%u via NSVC=%u/NSEI=%u\n", - ns_bvci, nsvc->nsvci, nsvc->nsei); + ns_bvci, nsvci, nsei); + rate_ctr_inc(&peer->ctrg->ctr[GBPROX_PEER_CTR_DROPPED]); return bssgp_tx_status(BSSGP_CAUSE_BVCI_BLOCKED, NULL, msg); } rc = gbprox_relay2peer(msg, peer, ns_bvci); @@ -601,7 +738,7 @@ int gbprox_signal(unsigned int subsys, unsigned int signal, struct gprs_nsvc *nsvc = nssd->nsvc; struct gbprox_peer *peer; - if (subsys != SS_NS) + if (subsys != SS_L_NS) return 0; if (signal == S_NS_RESET && nsvc->nsei == gbcfg.nsip_sgsn_nsei) { @@ -615,13 +752,15 @@ int gbprox_signal(unsigned int subsys, unsigned int signal, if (signal == S_NS_ALIVE_EXP && nsvc->remote_end_is_sgsn) { LOGP(DGPRS, LOGL_NOTICE, "Tns alive expired too often, " "re-starting RESET procedure\n"); - nsip_connect(nsvc->nsi, &nsvc->ip.bts_addr, nsvc->nsei, - nsvc->nsvci); + rate_ctr_inc(&get_global_ctrg()-> + ctr[GBPROX_GLOB_CTR_RESTART_RESET_SGSN]); + gprs_ns_nsip_connect(nsvc->nsi, &nsvc->ip.bts_addr, + nsvc->nsei, nsvc->nsvci); } if (!nsvc->remote_end_is_sgsn) { /* from BSS to SGSN */ - peer = peer_by_nsvc(nsvc); + peer = peer_by_nsei(nsvc->nsei); if (!peer) { LOGP(DGPRS, LOGL_NOTICE, "signal %u for unknown peer " "NSEI=%u/NSVCI=%u\n", signal, nsvc->nsei, @@ -641,17 +780,25 @@ int gbprox_signal(unsigned int subsys, unsigned int signal, break; } } else { - /* iterate over all BTS peers and send the respective PDU */ - llist_for_each_entry(peer, &gbprox_bts_peers, list) { + /* Forward this message to all NS-VC to BSS */ + struct gprs_ns_inst *nsi = gbcfg.nsi; + struct gprs_nsvc *next_nsvc; + + llist_for_each_entry(next_nsvc, &nsi->gprs_nsvcs, list) { + if (next_nsvc->remote_end_is_sgsn) + continue; + + /* Note that the following does not start the full + * procedures including timer based retransmissions. */ switch (signal) { case S_NS_RESET: - gprs_ns_tx_reset(peer->nsvc, nssd->cause); + gprs_ns_tx_reset(next_nsvc, nssd->cause); break; case S_NS_BLOCK: - gprs_ns_tx_block(peer->nsvc, nssd->cause); + gprs_ns_tx_block(next_nsvc, nssd->cause); break; case S_NS_UNBLOCK: - gprs_ns_tx_unblock(peer->nsvc); + gprs_ns_tx_unblock(next_nsvc); break; } } @@ -659,31 +806,235 @@ int gbprox_signal(unsigned int subsys, unsigned int signal, return 0; } +int gbprox_dump_global(FILE *stream, int indent, int verbose) +{ + unsigned int i; + const struct rate_ctr_group_desc *desc; + int rc; + + rc = fprintf(stream, "%*sGbproxy global:\n", indent, ""); + if (rc < 0) + return rc; -#include <osmocom/vty/command.h> + if (!verbose) + return 0; -gDEFUN(show_gbproxy, show_gbproxy_cmd, "show gbproxy", - SHOW_STR "Display information about the Gb proxy") + desc = get_global_ctrg()->desc; + + for (i = 0; i < desc->num_ctr; i++) { + struct rate_ctr *ctr = &get_global_ctrg()->ctr[i]; + if (ctr->current) { + rc = fprintf(stream, "%*s %s: %llu\n", + indent, "", + desc->ctr_desc[i].description, + (long long)ctr->current); + + if (rc < 0) + return rc; + } + } + + return 0; +} + +int gbprox_dump_peers(FILE *stream, int indent, int verbose) { struct gbprox_peer *peer; + struct gprs_ra_id raid; + unsigned int i; + const struct rate_ctr_group_desc *desc; + int rc; + + rc = fprintf(stream, "%*sPeers:\n", indent, ""); + if (rc < 0) + return rc; llist_for_each_entry(peer, &gbprox_bts_peers, list) { - struct gprs_nsvc *nsvc = peer->nsvc; - struct gprs_ra_id raid; gsm48_parse_ra(&raid, peer->ra); - vty_out(vty, "NSEI %5u, NS-VC %5u, PTP-BVCI %5u, " - "RAC %u-%u-%u-%u", - nsvc->nsei, nsvc->nsvci, peer->bvci, - raid.mcc, raid.mnc, raid.lac, raid.rac); - if (nsvc->ll == GPRS_NS_LL_UDP || nsvc->ll == GPRS_NS_LL_FR_GRE) - vty_out(vty, " %s:%u", - inet_ntoa(nsvc->ip.bts_addr.sin_addr), - ntohs(nsvc->ip.bts_addr.sin_port)); - if (peer->blocked) - vty_out(vty, " [BVC-BLOCKED]"); - - vty_out(vty, "%s", VTY_NEWLINE); + rc = fprintf(stream, "%*s NSEI %u, BVCI %u, %sblocked, " + "RAC %u-%u-%u-%u\n", + indent, "", + peer->nsei, peer->bvci, + peer->blocked ? "" : "not ", + raid.mcc, raid.mnc, raid.lac, raid.rac); + + if (rc < 0) + return rc; + + if (!verbose) + continue; + + desc = peer->ctrg->desc; + + for (i = 0; i < desc->num_ctr; i++) { + struct rate_ctr *ctr = &peer->ctrg->ctr[i]; + if (ctr->current) { + rc = fprintf(stream, "%*s %s: %llu\n", + indent, "", + desc->ctr_desc[i].description, + (long long)ctr->current); + + if (rc < 0) + return rc; + } + } + } + + return 0; +} + +void gbprox_reset() +{ + struct gbprox_peer *peer, *tmp; + + llist_for_each_entry_safe(peer, tmp, &gbprox_bts_peers, list) + peer_free(peer); + + rate_ctr_group_free(global_ctrg); + global_ctrg = NULL; +} + +static int gbprox_cleanup_peers(uint16_t nsei, uint16_t bvci) +{ + int counter = 0; + struct gbprox_peer *peer, *tmp; + + llist_for_each_entry_safe(peer, tmp, &gbprox_bts_peers, list) { + if (peer->nsei != nsei) + continue; + if (bvci && peer->bvci != bvci) + continue; + + peer_free(peer); + counter += 1; + } + + return counter; +} + +#include <osmocom/vty/command.h> + +static void gbprox_vty_print_peer(struct vty *vty, struct gbprox_peer *peer) +{ + struct gprs_ra_id raid; + gsm48_parse_ra(&raid, peer->ra); + + vty_out(vty, "NSEI %5u, PTP-BVCI %5u, " + "RAC %u-%u-%u-%u", + peer->nsei, peer->bvci, + raid.mcc, raid.mnc, raid.lac, raid.rac); + if (peer->blocked) + vty_out(vty, " [BVC-BLOCKED]"); + + vty_out(vty, "%s", VTY_NEWLINE); +} + +gDEFUN(show_gbproxy, show_gbproxy_cmd, "show gbproxy [stats]", + SHOW_STR "Display information about the Gb proxy\n" "Show statistics\n") +{ + struct gbprox_peer *peer; + int show_stats = argc >= 1; + + if (show_stats) + vty_out_rate_ctr_group(vty, "", get_global_ctrg()); + + llist_for_each_entry(peer, &gbprox_bts_peers, list) { + gbprox_vty_print_peer(vty, peer); + + if (show_stats) + vty_out_rate_ctr_group(vty, " ", peer->ctrg); + } + return CMD_SUCCESS; +} + +gDEFUN(delete_gb_bvci, delete_gb_bvci_cmd, + "delete-gbproxy-peer <0-65534> bvci <2-65534>", + "Delete a GBProxy peer by NSEI and optionally BVCI\n" + "NSEI number\n" + "Only delete peer with a matching BVCI\n" + "BVCI number\n") +{ + const uint16_t nsei = atoi(argv[0]); + const uint16_t bvci = atoi(argv[1]); + int counter; + + counter = gbprox_cleanup_peers(nsei, bvci); + + if (counter == 0) { + vty_out(vty, "BVC not found%s", VTY_NEWLINE); + return CMD_WARNING; } + + return CMD_SUCCESS; +} + +gDEFUN(delete_gb_nsei, delete_gb_nsei_cmd, + "delete-gbproxy-peer <0-65534> (only-bvc|only-nsvc|all) [dry-run]", + "Delete a GBProxy peer by NSEI and optionally BVCI\n" + "NSEI number\n" + "Only delete BSSGP connections (BVC)\n" + "Only delete dynamic NS connections (NS-VC)\n" + "Delete BVC and dynamic NS connections\n" + "Show what would be deleted instead of actually deleting\n" + ) +{ + const uint16_t nsei = atoi(argv[0]); + const char *mode = argv[1]; + int dry_run = argc > 2; + int delete_bvc = 0; + int delete_nsvc = 0; + int counter; + + if (strcmp(mode, "only-bvc") == 0) + delete_bvc = 1; + else if (strcmp(mode, "only-nsvc") == 0) + delete_nsvc = 1; + else + delete_bvc = delete_nsvc = 1; + + if (delete_bvc) { + if (!dry_run) + counter = gbprox_cleanup_peers(nsei, 0); + else { + struct gbprox_peer *peer; + counter = 0; + llist_for_each_entry(peer, &gbprox_bts_peers, list) { + if (peer->nsei != nsei) + continue; + + vty_out(vty, "BVC: "); + gbprox_vty_print_peer(vty, peer); + counter += 1; + } + } + vty_out(vty, "%sDeleted %d BVC%s", + dry_run ? "Not " : "", counter, VTY_NEWLINE); + } + + if (delete_nsvc) { + struct gprs_ns_inst *nsi = gbcfg.nsi; + struct gprs_nsvc *nsvc, *nsvc2; + + counter = 0; + llist_for_each_entry_safe(nsvc, nsvc2, &nsi->gprs_nsvcs, list) { + if (nsvc->nsei != nsei) + continue; + if (nsvc->persistent) + continue; + + if (!dry_run) + gprs_nsvc_delete(nsvc); + else + vty_out(vty, "NS-VC: NSEI %5u, NS-VCI %5u, " + "remote %s%s", + nsvc->nsei, nsvc->nsvci, + gprs_ns_ll_str(nsvc), VTY_NEWLINE); + counter += 1; + } + vty_out(vty, "%sDeleted %d NS-VC%s", + dry_run ? "Not " : "", counter, VTY_NEWLINE); + } + return CMD_SUCCESS; } |