diff options
author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2014-09-12 15:09:56 +0200 |
---|---|---|
committer | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2014-09-19 10:46:23 +0200 |
commit | 7430da621a25337d614cd08acb578905aa52337d (patch) | |
tree | 0def31a783b198da3bf6b4c894377191743ce9f6 /openbsc/src/gprs/gprs_gb_parse.c | |
parent | cba4c0cc600da7b9548e9267cb0486806820a9ef (diff) |
gbproxy: Keep tlli_info after detach
Currently a tlli_info entry is deleted when the TLLI gets invalidated
by a Detach message.
This patch introduces the possibility to keep tlli_info entries in
the list. Those entries then have cleared TLLI fields, are marked as
de-registered, and can only be retrieved by a message containing an
IMSI or a P-TMSI.
The following VTY configuration commands are added to the gbproxy
node:
- tlli-list keep-mode never : Don't keep the entries (default)
- tlli-list keep-mode re-attach : Only keep them, when a Detach
message with re-attach required has been received
- tlli-list keep-mode identified : Only keep entries which are
associated with an IMSI
- tlli-list keep-mode always : Keep all entries
Note that at least one of max-length or max-age should be set when
this feature is used to limit the number of entries.
Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/src/gprs/gprs_gb_parse.c')
-rw-r--r-- | openbsc/src/gprs/gprs_gb_parse.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/openbsc/src/gprs/gprs_gb_parse.c b/openbsc/src/gprs/gprs_gb_parse.c index f361951a1..7ae792a62 100644 --- a/openbsc/src/gprs/gprs_gb_parse.c +++ b/openbsc/src/gprs/gprs_gb_parse.c @@ -224,6 +224,7 @@ static int gprs_gb_parse_gmm_detach_req(uint8_t *data, size_t data_len, { uint8_t *value; size_t value_len; + int detach_type; int power_off; parse_ctx->llc_msg_name = "DETACH_REQ"; @@ -234,9 +235,14 @@ static int gprs_gb_parse_gmm_detach_req(uint8_t *data, size_t data_len, /* invalid */ return 0; + detach_type = *value & 0x07; power_off = *value & 0x08 ? 1 : 0; - if (!parse_ctx->to_bss) { + if (parse_ctx->to_bss) { + /* Network originated */ + if (detach_type == GPRS_DET_T_MT_REATT_REQ) + parse_ctx->await_reattach = 1; + } else { /* Mobile originated */ if (power_off) @@ -651,6 +657,10 @@ void gprs_gb_log_parse_context(struct gprs_gb_parse_context *parse_ctx, LOGP(DGPRS, LOGL_DEBUG, "%s invalidate", sep); sep = ","; } + if (parse_ctx->await_reattach) { + LOGP(DGPRS, LOGL_DEBUG, "%s re-attach", sep); + sep = ","; + } LOGP(DGPRS, LOGL_DEBUG, "\n"); } |