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authorPhilipp Maier <pmaier@sysmocom.de>2017-03-29 11:35:50 +0200
committerHarald Welte <laforge@gnumonks.org>2017-04-08 07:44:46 +0000
commit783047e86ec64677f3894bd22576315eee631275 (patch)
treeaae96bdea3f2588b98e180ee6909bd9efc09d788 /include/osmocom/gsm
parent14e76b9958b6cb93944a991ffaa5125f601f3d20 (diff)
gsm0808: Add utils for Cell Identifier List
The planned support for true A over IP requires the encoding of the a Cell Identifier List element (see also BSS_MAP_MSG_PAGING). This commt adds encoding/decoding functionality and tests for the element mentioned above, however, it is not yet actively used. Change-Id: I625245dd1dd396fc2bc189e8cd2c444a33042528
Diffstat (limited to 'include/osmocom/gsm')
-rw-r--r--include/osmocom/gsm/gsm0808_utils.h8
-rw-r--r--include/osmocom/gsm/protocol/gsm_08_08.h8
2 files changed, 16 insertions, 0 deletions
diff --git a/include/osmocom/gsm/gsm0808_utils.h b/include/osmocom/gsm/gsm0808_utils.h
index 5bd27c76..e6e55a7e 100644
--- a/include/osmocom/gsm/gsm0808_utils.h
+++ b/include/osmocom/gsm/gsm0808_utils.h
@@ -63,3 +63,11 @@ uint8_t gsm0808_enc_encrypt_info(struct msgb *msg,
/* Decode Encryption Information element */
int gsm0808_dec_encrypt_info(struct gsm0808_encrypt_info *ei,
const uint8_t *elem, uint8_t len);
+
+/* Encode Cell Identifier List element */
+uint8_t gsm0808_enc_cell_id_list(struct msgb *msg,
+ const struct gsm0808_cell_id_list *cil);
+
+/* Decode Cell Identifier List element */
+int gsm0808_dec_cell_id_list(struct gsm0808_cell_id_list *cil,
+ const uint8_t *elem, uint8_t len);
diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h
index 3939aedd..e5e7e1ef 100644
--- a/include/osmocom/gsm/protocol/gsm_08_08.h
+++ b/include/osmocom/gsm/protocol/gsm_08_08.h
@@ -457,3 +457,11 @@ struct gsm0808_encrypt_info {
uint8_t key[ENCRY_INFO_KEY_MAXLEN];
unsigned int key_len;
};
+
+/* 3GPP TS 48.008 3.2.2.27 Cell Identifier List */
+#define CELL_ID_LIST_LAC_MAXLEN 127
+struct gsm0808_cell_id_list {
+ uint8_t id_discr;
+ uint16_t id_list_lac[CELL_ID_LIST_LAC_MAXLEN];
+ unsigned int id_list_len;
+};