Navid Nikaein
286c092cfc
* update PDCP security and count calculation git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5307 818b1a75-f10b-46b9-bf7c-635c3b92a50f
170 lines
5.4 KiB
C
Executable File
170 lines
5.4 KiB
C
Executable File
/*
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pdcp_primitives.h
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-------------------
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AUTHOR : Baris Demiray
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COMPANY : EURECOM
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EMAIL : Baris.Demiray@eurecom.fr
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***************************************************************************/
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#ifndef PDCP_PRIMITIVES_H
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#define PDCP_PRIMITIVES_H
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/*
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* 3GPP TS 36.323 V10.1.0 (2011-03)
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*/
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/*
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* Data or control (1-bit, see 6.3.7)
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*/
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#define PDCP_CONTROL_PDU_BIT_SET 0x00
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#define PDCP_DATA_PDU_BIT_SET 0x01
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/*
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* PDU-type (3-bit, see 6.3.8)
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*/
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#define PDCP_STATUS_REPORT 0x00
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#define INTERSPERSED_ROHC_FEEDBACK_PACKET 0x01
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/*
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* 6.1 Protocol Data Units
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* 6.2.2 Control Plane PDCP Data PDU
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*/
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#define PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE 1
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#define PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE 4
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typedef struct {
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uint8_t sn; // PDCP sequence number will wrap around 2^5-1 so
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// reserved field is unnecessary here
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uint8_t mac_i[PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE]; // Integration protection is not implemented (pad with 0)
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} pdcp_control_plane_data_pdu_header;
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/*
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* 6.2.3 User Plane PDCP Data PDU with long PDCP SN (12-bit)
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*/
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typedef struct {
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uint8_t dc; // Data or control (see 6.3.7)
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uint16_t sn; // 12-bit sequence number
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} pdcp_user_plane_data_pdu_header_with_long_sn;
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#define PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE 2
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/*
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* 6.2.4 User Plane PDCP Data PDU with short PDCP SN (7-bit)
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*/
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typedef struct {
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uint8_t dc;
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uint8_t sn; // 7-bit sequence number
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} pdcp_user_plane_data_pdu_header_with_short_sn;
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#define PDCP_USER_PLANE_DATA_PDU_SHORT_SN_HEADER_SIZE 1
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/*
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* 6.2.5 PDCP Control PDU for interspersed ROHC feedback packet
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*/
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typedef struct {
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uint8_t dc;
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uint8_t pdu_type; // PDU type (see 6.3.8)
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} pdcp_control_pdu_for_interspersed_rohc_feedback_packet_header;
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#define PDCP_CONTROL_PDU_INTERSPERSED_ROHC_FEEDBACK_HEADER_SIZE 1
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/*
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* 6.2.6 PDCP Control PDU for PDCP status report
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*/
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typedef struct {
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uint8_t dc;
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uint8_t pdu_type; // PDU type (see 6.3.8)
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uint16_t first_missing_sn; // First missing PDCP SN
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unsigned char* window_bitmap; // Ack/Nack information coded as a bitmap
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uint16_t window_bitmap_size;
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} pdcp_control_pdu_for_pdcp_status_report;
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/*
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* Following symbolic constant is the size of FIXED part of this PDU
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* so bitmap size should be added to find total header size
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*/
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#define PDCP_CONTROL_PDU_STATUS_REPORT_HEADER_SIZE 2
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/*
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* Parses data/control field out of buffer of User Plane PDCP Data PDU with
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* long PDCP SN (12-bit)
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*
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* @param pdu_buffer PDCP PDU buffer
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* @return 1 bit dc
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*/
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uint8_t pdcp_get_dc_filed(unsigned char* pdu_buffer);
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/*
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* Parses sequence number out of buffer of User Plane PDCP Data PDU with
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* long PDCP SN (12-bit)
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*
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* @param pdu_buffer PDCP PDU buffer
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* @return 12-bit sequence number
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*/
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uint16_t pdcp_get_sequence_number_of_pdu_with_long_sn(unsigned char* pdu_buffer);
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/*
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* Parses sequence number out of buffer of User Plane PDCP Data PDU with
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* short PDCP SN (7-bit)
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*
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* @param pdu_buffer PDCP PDU buffer
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* @return 7-bit sequence number
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*/
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uint8_t pdcp_get_sequence_number_of_pdu_with_short_sn(unsigned char* pdu_buffer);
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/*
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* Parses sequence number out of buffer of Control Plane PDCP Data PDU with
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* short PDCP SN (5-bit)
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*
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* @param pdu_buffer PDCP PDU buffer
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* @return 5-bit sequence number
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*/
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uint8_t pdcp_get_sequence_number_of_pdu_with_SRB_sn(unsigned char* pdu_buffer);
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/*
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* Fills the incoming buffer with the fields of the header for SRB1
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*
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* @param pdu_buffer PDCP PDU buffer
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* @return TRUE on success, FALSE otherwise
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*/
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boolean_t pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer(unsigned char* pdu_buffer, \
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pdcp_control_plane_data_pdu_header* pdu);
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/*
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* Fills the incoming buffer with the fields of the header for long SN (RLC UM and AM)
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*
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* @param pdu_buffer PDCP PDU buffer
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* @return TRUE on success, FALSE otherwise
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*/
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boolean_t pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer(unsigned char* pdu_buffer, \
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pdcp_user_plane_data_pdu_header_with_long_sn* pdu);
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/*
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* Fills the incoming status report header with given value of bitmap
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* and 'first missing pdu' sequence number
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*
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* @param FMS First Missing PDCP SN
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* @param bitmap Received/Missing sequence number bitmap
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* @param pdu A status report header
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* @return TRUE on success, FALSE otherwise
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*/
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boolean_t pdcp_serialize_control_pdu_for_pdcp_status_report(unsigned char* pdu_buffer, \
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uint8_t bitmap[512], pdcp_control_pdu_for_pdcp_status_report* pdu);
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int pdcp_netlink_dequeue_element(module_id_t enb_mod_idP, module_id_t ue_mod_idP, eNB_flag_t eNB_flagP,
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struct pdcp_netlink_element_s **data_ppP);
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void pdcp_config_set_security(pdcp_t *pdcp_pP, module_id_t enb_mod_idP, module_id_t ue_mod_idP, frame_t frameP, eNB_flag_t eNB_flagP, rb_id_t rb_idP,
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uint16_t lc_idP, uint8_t security_modeP, uint8_t *kRRCenc_pP, uint8_t *kRRCint_pP, uint8_t *kUPenc_pP);
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#if defined(ENABLE_SECURITY)
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int pdcp_apply_security(pdcp_t *pdcp_entity,
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srb_flag_t srb_flagP,
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rb_id_t rb_id,
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uint8_t pdcp_header_len, uint16_t current_sn, uint8_t *pdcp_pdu_buffer,
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uint16_t sdu_buffer_size);
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int pdcp_validate_security(pdcp_t *pdcp_entity,
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srb_flag_t srb_flagP,
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rb_id_t rb_id,
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uint8_t pdcp_header_len, uint16_t current_sn, uint8_t *pdcp_pdu_buffer,
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uint16_t sdu_buffer_size);
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#endif /* defined(ENABLE_SECURITY) */
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#endif
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