fixeria has submitted this change. ( https://gerrit.osmocom.org/c/libosmo-gprs/+/29393 )
Change subject: llc: check-in basic LLC definitions from osmo-sgsn.git ......................................................................
llc: check-in basic LLC definitions from osmo-sgsn.git
osmo-sgsn.git fb6cf3221ef4989441c09a650011e4a334c37d12
Change-Id: I6ed0f4820b3a12a00be71ce63757765551743101 --- M include/osmocom/gprs/llc/Makefile.am A include/osmocom/gprs/llc/llc.h 2 files changed, 97 insertions(+), 0 deletions(-)
Approvals: Jenkins Builder: Verified pespin: Looks good to me, but someone else must approve neels: Looks good to me, but someone else must approve fixeria: Looks good to me, approved
diff --git a/include/osmocom/gprs/llc/Makefile.am b/include/osmocom/gprs/llc/Makefile.am index d394413..5f44218 100644 --- a/include/osmocom/gprs/llc/Makefile.am +++ b/include/osmocom/gprs/llc/Makefile.am @@ -1,4 +1,5 @@ llc_HEADERS = \ + llc.h \ $(NULL)
llcdir = $(includedir)/osmocom/gprs/llc diff --git a/include/osmocom/gprs/llc/llc.h b/include/osmocom/gprs/llc/llc.h new file mode 100644 index 0000000..dce0f4d --- /dev/null +++ b/include/osmocom/gprs/llc/llc.h @@ -0,0 +1,96 @@ +#pragma once + +/* LLC (Logical Link Control) definitions from 3GPP TS 44.064 */ + +#include <stdint.h> + +/* Section 4.7 LLC Layer Structure */ +enum gprs_llc_sapi { + GPRS_SAPI_GMM = 1, + GPRS_SAPI_TOM2 = 2, + GPRS_SAPI_SNDCP3 = 3, + GPRS_SAPI_SNDCP5 = 5, + GPRS_SAPI_SMS = 7, + GPRS_SAPI_TOM8 = 8, + GPRS_SAPI_SNDCP9 = 9, + GPRS_SAPI_SNDCP11 = 11, +}; + +/* Section 6.4.1.6 / Table 6 */ +enum gprs_llc_xid_type { + GPRS_LLC_XID_T_VERSION = 0, + GPRS_LLC_XID_T_IOV_UI = 1, + GPRS_LLC_XID_T_IOV_I = 2, + GPRS_LLC_XID_T_T200 = 3, + GPRS_LLC_XID_T_N200 = 4, + GPRS_LLC_XID_T_N201_U = 5, + GPRS_LLC_XID_T_N201_I = 6, + GPRS_LLC_XID_T_mD = 7, + GPRS_LLC_XID_T_mU = 8, + GPRS_LLC_XID_T_kD = 9, + GPRS_LLC_XID_T_kU = 10, + GPRS_LLC_XID_T_L3_PAR = 11, + GPRS_LLC_XID_T_RESET = 12, +}; + +/* TS 04.64 Section 7.1.2 Table 7: LLC layer primitives (GMM/SNDCP/SMS/TOM) */ +/* TS 04.65 Section 5.1.2 Table 2: Service primitives used by SNDCP */ +enum gprs_llc_primitive { + /* GMM <-> LLME */ + LLGMM_ASSIGN_REQ, /* GMM tells us new TLLI: TLLI old, TLLI new, Kc, CiphAlg */ + LLGMM_RESET_REQ, /* GMM tells us to perform XID negotiation: TLLI */ + LLGMM_RESET_CNF, /* LLC informs GMM that XID has completed: TLLI */ + LLGMM_SUSPEND_REQ, /* GMM tells us MS has suspended: TLLI, Page */ + LLGMM_RESUME_REQ, /* GMM tells us MS has resumed: TLLI */ + LLGMM_PAGE_IND, /* LLC asks GMM to page MS: TLLI */ + LLGMM_IOV_REQ, /* GMM tells us to perform XID: TLLI */ + LLGMM_STATUS_IND, /* LLC informs GMM about error: TLLI, Cause */ + /* LLE <-> (GMM/SNDCP/SMS/TOM) */ + LL_RESET_IND, /* TLLI */ + LL_ESTABLISH_REQ, /* TLLI, XID Req */ + LL_ESTABLISH_IND, /* TLLI, XID Req, N201-I, N201-U */ + LL_ESTABLISH_RESP, /* TLLI, XID Negotiated */ + LL_ESTABLISH_CONF, /* TLLI, XID Neg, N201-i, N201-U */ + LL_RELEASE_REQ, /* TLLI, Local */ + LL_RELEASE_IND, /* TLLI, Cause */ + LL_RELEASE_CONF, /* TLLI */ + LL_XID_REQ, /* TLLI, XID Requested */ + LL_XID_IND, /* TLLI, XID Req, N201-I, N201-U */ + LL_XID_RESP, /* TLLI, XID Negotiated */ + LL_XID_CONF, /* TLLI, XID Neg, N201-I, N201-U */ + LL_DATA_REQ, /* TLLI, SN-PDU, Ref, QoS, Radio Prio, Ciph */ + LL_DATA_IND, /* TLLI, SN-PDU */ + LL_DATA_CONF, /* TLLI, Ref */ + LL_UNITDATA_REQ, /* TLLI, SN-PDU, Ref, QoS, Radio Prio, Ciph */ + LL_UNITDATA_IND, /* TLLI, SN-PDU */ + LL_STATUS_IND, /* TLLI, Cause */ +}; + +/* Section 4.5.2 Logical Link States + Annex C.2 */ +enum gprs_llc_lle_state { + GPRS_LLES_UNASSIGNED = 1, /* No TLLI yet */ + GPRS_LLES_ASSIGNED_ADM = 2, /* TLLI assigned */ + GPRS_LLES_LOCAL_EST = 3, /* Local Establishment */ + GPRS_LLES_REMOTE_EST = 4, /* Remote Establishment */ + GPRS_LLES_ABM = 5, + GPRS_LLES_LOCAL_REL = 6, /* Local Release */ + GPRS_LLES_TIMER_REC = 7, /* Timer Recovery */ +}; + +enum gprs_llc_llme_state { + GPRS_LLMS_UNASSIGNED = 1, /* No TLLI yet */ + GPRS_LLMS_ASSIGNED = 2, /* TLLI assigned */ +}; + +/* Section 8.9.9 LLC layer parameter default values */ +struct gprs_llc_params { + uint16_t iov_i_exp; + uint16_t t200_201; + uint16_t n200; + uint16_t n201_u; + uint16_t n201_i; + uint16_t mD; + uint16_t mU; + uint16_t kD; + uint16_t kU; +};
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fixeria