diff options
| author | Neels Hofmeyr <neels@hofmeyr.de> | 2018-12-26 18:13:38 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@osmocom.org> | 2019-09-28 14:34:07 +0200 |
| commit | 1b729ce106f474e29e7bbd57c01c3472e75a8b25 (patch) | |
| tree | 9d5116c2ab5d98e484e0e10d9229917e69934a71 /src/gsm | |
| parent | 2e286a5429fd90c02c217c94591c690b40a93888 (diff) | |
gsup: add OSMO_GSUP_SUPPORTED_RAT_TYPES_IE and OSMO_GSUP_CURRENT_RAT_TYPE_IE
OSMO_GSUP_SUPPORTED_RAT_TYPES_IE corresponds to the Supported RAT Types
Indicator from 3GPP TS 29.002. See 8.1.2 MAP_UPDATE_LOCATION service,
which indicates the capabilities of the MSC/VLR to the HLR.
So far, have room for eight RAT types in the gsup_msg. That is an arbitrary
random choice without any rationale.
OSMO_GSUP_CURRENT_RAT_TYPE_IE is useful to communicate the currently
used RAN / RAT type of the current subscriber during Location Updating Request.
Change-Id: I93850710ab55a605bf61b95063a69682a2899bb1
Diffstat (limited to 'src/gsm')
| -rw-r--r-- | src/gsm/gsup.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/gsm/gsup.c b/src/gsm/gsup.c index 2e6690ee..2f9d85d8 100644 --- a/src/gsm/gsup.c +++ b/src/gsm/gsup.c @@ -297,6 +297,7 @@ int osmo_gsup_decode(const uint8_t *const_data, size_t data_len, struct osmo_gsup_message *gsup_msg) { int rc; + int i; uint8_t tag; /* the shift/match functions expect non-const pointers, but we'll * either copy the data or cast pointers back to const before returning @@ -459,6 +460,21 @@ int osmo_gsup_decode(const uint8_t *const_data, size_t data_len, gsup_msg->cn_domain = *value; break; + case OSMO_GSUP_SUPPORTED_RAT_TYPES_IE: + if (value_len > ARRAY_SIZE(gsup_msg->supported_rat_types)) { + LOGP(DLGSUP, LOGL_ERROR, "nr of supported RAT types %zu > %zu\n", + value_len, ARRAY_SIZE(gsup_msg->supported_rat_types)); + return -GMM_CAUSE_COND_IE_ERR; + } + for (i = 0; i < value_len; i++) + gsup_msg->supported_rat_types[i] = value[i]; + gsup_msg->supported_rat_types_len = value_len; + break; + + case OSMO_GSUP_CURRENT_RAT_TYPE_IE: + gsup_msg->current_rat_type = *value; + break; + case OSMO_GSUP_CHARG_CHAR_IE: gsup_msg->pdp_charg_enc = value; gsup_msg->pdp_charg_enc_len = value_len; @@ -856,6 +872,25 @@ int osmo_gsup_encode(struct msgb *msg, const struct osmo_gsup_message *gsup_msg) if ((u8 = gsup_msg->cause_sm)) msgb_tlv_put(msg, OSMO_GSUP_CAUSE_SM_IE, sizeof(u8), &u8); + if (gsup_msg->supported_rat_types_len) { + int i; + uint8_t *len = msgb_tl_put(msg, OSMO_GSUP_SUPPORTED_RAT_TYPES_IE); + *len = gsup_msg->supported_rat_types_len; + for (i = 0; i < gsup_msg->supported_rat_types_len; i++) { + if (!gsup_msg->supported_rat_types[i] || + gsup_msg->supported_rat_types[i] >= OSMO_RAT_COUNT) { + LOGP(DLGSUP, LOGL_ERROR, "Failed to encode RAT type %s (nr %d)\n", + osmo_rat_type_name(gsup_msg->supported_rat_types[i]), i); + return -EINVAL; + } + msgb_v_put(msg, gsup_msg->supported_rat_types[i]); + } + } + if (gsup_msg->current_rat_type != OSMO_RAT_UNKNOWN) { + u8 = gsup_msg->current_rat_type; + msgb_tlv_put(msg, OSMO_GSUP_CURRENT_RAT_TYPE_IE, sizeof(u8), &u8); + } + return 0; } |