diff options
Diffstat (limited to 'src/gsm/gsm0808_utils.c')
| -rw-r--r-- | src/gsm/gsm0808_utils.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/gsm/gsm0808_utils.c b/src/gsm/gsm0808_utils.c index 78cbe92e..040872b8 100644 --- a/src/gsm/gsm0808_utils.c +++ b/src/gsm/gsm0808_utils.c @@ -831,6 +831,10 @@ static void cell_id_to_cgi(struct osmo_cell_global_id *dst, dst->lai.lac = u->lac; return; + case CELL_IDENT_SAI: + dst->lai = u->sai.lai; + return; + case CELL_IDENT_NO_CELL: case CELL_IDENT_BSS: case CELL_IDENT_UTRAN_PLMN_LAC_RNC: @@ -858,6 +862,8 @@ int gsm0808_cell_id_size(enum CELL_IDENT discr) case CELL_IDENT_BSS: case CELL_IDENT_NO_CELL: return 0; + case CELL_IDENT_SAI: + return 7; case CELL_IDENT_WHOLE_GLOBAL_PS: return 8; default: @@ -904,6 +910,12 @@ int gsm0808_decode_cell_id_u(union gsm0808_cell_id_u *out, enum CELL_IDENT discr case CELL_IDENT_NO_CELL: /* Does not have any list items */ break; + case CELL_IDENT_SAI: + if (len < 7) + return -EINVAL; + decode_lai(buf, &out->sai.lai); + out->sai.sac = osmo_load16be(buf + sizeof(struct gsm48_loc_area_id)); + break; case CELL_IDENT_WHOLE_GLOBAL_PS: /* 3GPP TS 48.018 sec 11.3.9 "Cell Identifier" */ if (len < 8) @@ -953,6 +965,16 @@ void gsm0808_msgb_put_cell_id_u(struct msgb *msg, enum CELL_IDENT id_discr, cons case CELL_IDENT_NO_CELL: /* Does not have any list items */ break; + + case CELL_IDENT_SAI: { + const struct osmo_service_area_id *id = &u->sai; + struct gsm48_loc_area_id lai; + gsm48_generate_lai2(&lai, &id->lai); + memcpy(msgb_put(msg, sizeof(lai)), &lai, sizeof(lai)); + msgb_put_u16(msg, id->sac); + break; + } + case CELL_IDENT_WHOLE_GLOBAL_PS: { /* 3GPP TS 48.018 sec 11.3.9 "Cell Identifier" */ const struct osmo_cell_global_id_ps *id = &u->global_ps; @@ -1166,6 +1188,31 @@ static int parse_cell_id_lac_list(struct gsm0808_cell_id_list2 *cil, const uint8 return i; } +static int parse_cell_id_sai_list(struct gsm0808_cell_id_list2 *cil, const uint8_t *data, size_t remain, size_t *consumed) +{ + struct osmo_service_area_id *id; + uint16_t *sac_be; + size_t lai_offset; + int i = 0; + const size_t elemlen = sizeof(struct gsm48_loc_area_id) + sizeof(*sac_be); + + *consumed = 0; + while (remain >= elemlen) { + if (i >= GSM0808_CELL_ID_LIST2_MAXLEN) + return -ENOSPC; + id = &cil->id_list[i].sai; + lai_offset = i * elemlen; + decode_lai(&data[lai_offset], &id->lai); + sac_be = (uint16_t *)(&data[lai_offset + sizeof(struct gsm48_loc_area_id)]); + id->sac = osmo_load16be(sac_be); + *consumed += elemlen; + remain -= elemlen; + i++; + } + + return i; +} + /*! Decode Cell Identifier List IE * \param[out] cil Caller-provided memory to store Cell ID list * \param[in] elem IE value to be decoded @@ -1210,6 +1257,12 @@ int gsm0808_dec_cell_id_list2(struct gsm0808_cell_id_list2 *cil, case CELL_IDENT_NO_CELL: /* Does not have any list items */ break; + case CELL_IDENT_SAI: + list_len = parse_cell_id_sai_list(cil, elem, len, &bytes_elem); + break; + case CELL_IDENT_UTRAN_PLMN_LAC_RNC: + case CELL_IDENT_UTRAN_RNC: + case CELL_IDENT_UTRAN_LAC_RNC: default: /* Remaining cell identification types are not implemented. */ return -EINVAL; @@ -1703,6 +1756,8 @@ int gsm0808_cell_id_u_name(char *buf, size_t buflen, return snprintf(buf, buflen, "%s", osmo_cgi_name(&u->global)); case CELL_IDENT_WHOLE_GLOBAL_PS: return snprintf(buf, buflen, "%s", osmo_cgi_ps_name(&u->global_ps)); + case CELL_IDENT_SAI: + return snprintf(buf, buflen, "%s", osmo_sai_name(&u->sai)); default: /* For CELL_IDENT_BSS and CELL_IDENT_NO_CELL, just print the discriminator. * Same for kinds we have no string representation of yet. */ @@ -1859,6 +1914,12 @@ void gsm0808_cell_id_from_cgi(struct gsm0808_cell_id *cid, enum CELL_IDENT id_di cid->id.lac = cgi->lai.lac; return; + case CELL_IDENT_SAI: + cid->id.sai = (struct osmo_service_area_id){ + .lai = cgi->lai, + }; + return; + case CELL_IDENT_NO_CELL: case CELL_IDENT_BSS: case CELL_IDENT_UTRAN_PLMN_LAC_RNC: @@ -1905,6 +1966,10 @@ int gsm0808_cell_id_to_cgi(struct osmo_cell_global_id *cgi, const struct gsm0808 cgi->lai.lac = cid->id.lac; return OSMO_CGI_PART_LAC; + case CELL_IDENT_SAI: + cgi->lai = cid->id.sai.lai; + return OSMO_CGI_PART_PLMN | OSMO_CGI_PART_LAC; + case CELL_IDENT_NO_CELL: case CELL_IDENT_BSS: case CELL_IDENT_UTRAN_PLMN_LAC_RNC: @@ -1927,6 +1992,7 @@ const struct value_string gsm0808_cell_id_discr_names[] = { { CELL_IDENT_UTRAN_PLMN_LAC_RNC, "UTRAN-PLMN-LAC-RNC" }, { CELL_IDENT_UTRAN_RNC, "UTRAN-RNC" }, { CELL_IDENT_UTRAN_LAC_RNC, "UTRAN-LAC-RNC" }, + { CELL_IDENT_SAI, "SAI" }, { CELL_IDENT_WHOLE_GLOBAL_PS, "CGI-PS"}, { 0, NULL } }; |