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authorJacob Erlbeck <jerlbeck@sysmocom.de>2014-08-27 12:51:07 +0200
committerJacob Erlbeck <jerlbeck@sysmocom.de>2014-09-08 09:27:36 +0200
commitcabd24b33f51a109242c2a9188f7405ff8de64bc (patch)
treec26e89f47a124dc1524ac490f60bdd0b4fcab545 /openbsc/src/gprs/gb_proxy.c
parentf181f9ec2a1ad61ca040e0224835a08878bda795 (diff)
gbproxy: Use secondary SGSN if IMSI matches
This patch modifies gbprox_process_bssgp_ul() to send the message to the secondary SGSN if the IMSI has matched and routing to the secondary SGSN is enabled. The destination for stored messages is modified accordingly. Ticket: OW#1261 Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/src/gprs/gb_proxy.c')
-rw-r--r--openbsc/src/gprs/gb_proxy.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/openbsc/src/gprs/gb_proxy.c b/openbsc/src/gprs/gb_proxy.c
index 539e3aef9..6e93e1493 100644
--- a/openbsc/src/gprs/gb_proxy.c
+++ b/openbsc/src/gprs/gb_proxy.c
@@ -263,6 +263,8 @@ static int gbprox_process_bssgp_ul(struct gbproxy_config *cfg,
int len_change = 0;
time_t now;
struct gbproxy_tlli_info *tlli_info = NULL;
+ uint32_t sgsn_nsei = cfg->nsip_sgsn_nsei;
+ int send_msg_directly = 0;
if (!cfg->core_mcc && !cfg->core_mnc && !cfg->core_apn &&
!cfg->acquire_imsi)
@@ -328,6 +330,11 @@ static int gbprox_process_bssgp_ul(struct gbproxy_config *cfg,
tlli_info = gbproxy_update_tlli_state_ul(peer, now, &parse_ctx);
+ if (tlli_info && tlli_info->enable_patching && cfg->route_to_sgsn2) {
+ sgsn_nsei = cfg->nsip_sgsn2_nsei;
+ send_msg_directly = 1;
+ }
+
if (tlli_info && tlli_info->imsi_acq_pending && parse_ctx.g48_hdr &&
parse_ctx.g48_hdr->proto_discr == GSM48_PDISC_MM_GPRS &&
parse_ctx.g48_hdr->msg_type == GSM48_MT_GMM_ID_RESP &&
@@ -359,7 +366,7 @@ static int gbprox_process_bssgp_ul(struct gbproxy_config *cfg,
&tmp_parse_ctx);
rc = gbprox_relay2sgsn(cfg, stored_msg, msgb_bvci(msg),
- cfg->nsip_sgsn_nsei);
+ sgsn_nsei);
if (rc < 0)
LOGP(DLLC, LOGL_ERROR,
@@ -425,6 +432,13 @@ static int gbprox_process_bssgp_ul(struct gbproxy_config *cfg,
gbproxy_update_tlli_state_after(peer, tlli_info, now, &parse_ctx);
+ if (send_msg_directly) {
+ /* Send message directly to the selected SGSN */
+ rc = gbprox_relay2sgsn(cfg, msg, msgb_bvci(msg), sgsn_nsei);
+ /* Don't let the calling code handle the transmission */
+ return 0;
+ }
+
return 1;
}