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Commit b4b55c9f authored by Lionel Gauthier's avatar Lionel Gauthier
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Added msc trace 

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7186 818b1a75-f10b-46b9-bf7c-635c3b92a50f
parent a22b9a17
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Showing with 44 additions and 38 deletions
openair2/LAYER2/PDCP_v10.1.0/pdcp_security.c
View file @ b4b55c9f
......@@ -44,19 +44,20 @@
#include "LAYER2/MAC/extern.h"
#include "pdcp.h"
#include "msc.h"
#include "pdcp_primitives.h"
#if defined(ENABLE_SECURITY)
static
uint32_t pdcp_get_next_count_tx(pdcp_t *const pdcp_entity, const srb_flag_t srb_flagP, const uint16_t pdcp_sn);
uint32_t pdcp_get_next_count_tx(pdcp_t *const pdcp_pP, const srb_flag_t srb_flagP, const uint16_t pdcp_sn);
static
uint32_t pdcp_get_next_count_rx(pdcp_t *const pdcp_entity, const srb_flag_t srb_flagP, const uint16_t pdcp_sn);
uint32_t pdcp_get_next_count_rx(pdcp_t *const pdcp_pP, const srb_flag_t srb_flagP, const uint16_t pdcp_sn);
//-----------------------------------------------------------------------------
static
uint32_t pdcp_get_next_count_tx(
pdcp_t * const pdcp_entity,
pdcp_t * const pdcp_pP,
const srb_flag_t srb_flagP,
const uint16_t pdcp_sn
)
......@@ -66,12 +67,12 @@ uint32_t pdcp_get_next_count_tx(
/* For TX COUNT = TX_HFN << length of SN | pdcp SN */
if (srb_flagP) {
/* 5 bits length SN */
count = ((pdcp_entity->tx_hfn << 5) | (pdcp_sn & 0x001F));
count = ((pdcp_pP->tx_hfn << 5) | (pdcp_sn & 0x001F));
} else {
if (pdcp_entity->seq_num_size == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
count = ((pdcp_entity->tx_hfn << 7) | (pdcp_sn & 0x07F));
if (pdcp_pP->seq_num_size == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
count = ((pdcp_pP->tx_hfn << 7) | (pdcp_sn & 0x07F));
} else { /*Default is the 12 bits length SN */
count = ((pdcp_entity->tx_hfn << 12) | (pdcp_sn & 0x0FFF));
count = ((pdcp_pP->tx_hfn << 12) | (pdcp_sn & 0x0FFF));
}
}
......@@ -83,7 +84,7 @@ uint32_t pdcp_get_next_count_tx(
//-----------------------------------------------------------------------------
static
uint32_t pdcp_get_next_count_rx(
pdcp_t * const pdcp_entity,
pdcp_t * const pdcp_pP,
const srb_flag_t srb_flagP,
const uint16_t pdcp_sn)
{
......@@ -92,19 +93,19 @@ uint32_t pdcp_get_next_count_rx(
/* For RX COUNT = RX_HFN << length of SN | pdcp SN of received PDU */
if (srb_flagP) {
/* 5 bits length SN */
count = (((pdcp_entity->rx_hfn + pdcp_entity->rx_hfn_offset) << 5) | (pdcp_sn & 0x001F));
count = (((pdcp_pP->rx_hfn + pdcp_pP->rx_hfn_offset) << 5) | (pdcp_sn & 0x001F));
} else {
if (pdcp_entity->seq_num_size == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
if (pdcp_pP->seq_num_size == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
/* 7 bits length SN */
count = (((pdcp_entity->rx_hfn + pdcp_entity->rx_hfn_offset) << 7) | (pdcp_sn & 0x007F));
count = (((pdcp_pP->rx_hfn + pdcp_pP->rx_hfn_offset) << 7) | (pdcp_sn & 0x007F));
} else { // default
/* 12 bits length SN */
count = (((pdcp_entity->rx_hfn + pdcp_entity->rx_hfn_offset) << 12) | (pdcp_sn & 0x0FFF));
count = (((pdcp_pP->rx_hfn + pdcp_pP->rx_hfn_offset) << 12) | (pdcp_sn & 0x0FFF));
}
}
// reset the hfn offset
pdcp_entity->rx_hfn_offset =0;
pdcp_pP->rx_hfn_offset =0;
LOG_D(PDCP, "[OSA] RX COUNT = 0x%08x\n", count);
return count;
......@@ -114,8 +115,8 @@ uint32_t pdcp_get_next_count_rx(
//-----------------------------------------------------------------------------
int
pdcp_apply_security(
const protocol_ctxt_t* const ctxtP,
pdcp_t *const pdcp_entity,
const protocol_ctxt_t* const ctxt_pP,
pdcp_t *const pdcp_pP,
const srb_flag_t srb_flagP,
const rb_id_t rb_id,
const uint8_t pdcp_header_len,
......@@ -127,15 +128,15 @@ pdcp_apply_security(
uint8_t *buffer_encrypted = NULL;
stream_cipher_t encrypt_params;
DevAssert(pdcp_entity != NULL);
DevAssert(pdcp_pP != NULL);
DevAssert(pdcp_pdu_buffer != NULL);
DevCheck(rb_id < NB_RB_MAX && rb_id >= 0, rb_id, NB_RB_MAX, 0);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_APPLY_SECURITY, VCD_FUNCTION_IN);
encrypt_params.direction = (pdcp_entity->is_ue == 1) ? SECU_DIRECTION_UPLINK : SECU_DIRECTION_DOWNLINK;
encrypt_params.direction = (pdcp_pP->is_ue == 1) ? SECU_DIRECTION_UPLINK : SECU_DIRECTION_DOWNLINK;
encrypt_params.bearer = rb_id - 1;
encrypt_params.count = pdcp_get_next_count_tx(pdcp_entity, srb_flagP, current_sn);
encrypt_params.count = pdcp_get_next_count_tx(pdcp_pP, srb_flagP, current_sn);
encrypt_params.key_length = 16;
if (srb_flagP) {
......@@ -143,26 +144,26 @@ pdcp_apply_security(
uint8_t *mac_i;
LOG_D(PDCP, "[OSA][RB %d] %s Applying control-plane security %d \n",
rb_id, (pdcp_entity->is_ue != 0) ? "UE -> eNB" : "eNB -> UE", pdcp_entity->integrityProtAlgorithm);
rb_id, (pdcp_pP->is_ue != 0) ? "UE -> eNB" : "eNB -> UE", pdcp_pP->integrityProtAlgorithm);
encrypt_params.message = pdcp_pdu_buffer;
encrypt_params.blength = (pdcp_header_len + sdu_buffer_size) << 3;
encrypt_params.key = pdcp_entity->kRRCint + 16; // + 128;
encrypt_params.key = pdcp_pP->kRRCint + 16; // + 128;
mac_i = &pdcp_pdu_buffer[pdcp_header_len + sdu_buffer_size];
/* Both header and data parts are integrity protected for
* control-plane PDUs */
stream_compute_integrity(pdcp_entity->integrityProtAlgorithm,
stream_compute_integrity(pdcp_pP->integrityProtAlgorithm,
&encrypt_params,
mac_i);
encrypt_params.key = pdcp_entity->kRRCenc; // + 128 // bit key
encrypt_params.key = pdcp_pP->kRRCenc; // + 128 // bit key
} else {
LOG_D(PDCP, "[OSA][RB %d] %s Applying user-plane security\n",
rb_id, (pdcp_entity->is_ue != 0) ? "UE -> eNB" : "eNB -> UE");
rb_id, (pdcp_pP->is_ue != 0) ? "UE -> eNB" : "eNB -> UE");
encrypt_params.key = pdcp_entity->kUPenc;// + 128;
encrypt_params.key = pdcp_pP->kUPenc;// + 128;
}
encrypt_params.message = &pdcp_pdu_buffer[pdcp_header_len];
......@@ -171,7 +172,7 @@ pdcp_apply_security(
buffer_encrypted = &pdcp_pdu_buffer[pdcp_header_len];
/* Apply ciphering if any requested */
stream_encrypt(pdcp_entity->cipheringAlgorithm,
stream_encrypt(pdcp_pP->cipheringAlgorithm,
&encrypt_params,
&buffer_encrypted);
......@@ -183,8 +184,8 @@ pdcp_apply_security(
//-----------------------------------------------------------------------------
int
pdcp_validate_security(
const protocol_ctxt_t* const ctxtP,
pdcp_t * const pdcp_entity,
const protocol_ctxt_t* const ctxt_pP,
pdcp_t * const pdcp_pP,
const srb_flag_t srb_flagP,
const rb_id_t rb_id,
const uint8_t pdcp_header_len,
......@@ -196,7 +197,7 @@ pdcp_validate_security(
uint8_t *buffer_decrypted = NULL;
stream_cipher_t decrypt_params;
DevAssert(pdcp_entity != NULL);
DevAssert(pdcp_pP != NULL);
DevAssert(pdcp_pdu_buffer != NULL);
DevCheck(rb_id < NB_RB_MAX && rb_id >= 0, rb_id, NB_RB_MAX, 0);
......@@ -205,25 +206,25 @@ pdcp_validate_security(
buffer_decrypted = (uint8_t*)&pdcp_pdu_buffer[pdcp_header_len];
decrypt_params.direction = (pdcp_entity->is_ue == 1) ? SECU_DIRECTION_DOWNLINK : SECU_DIRECTION_UPLINK ;
decrypt_params.direction = (pdcp_pP->is_ue == 1) ? SECU_DIRECTION_DOWNLINK : SECU_DIRECTION_UPLINK ;
decrypt_params.bearer = rb_id - 1;
decrypt_params.count = pdcp_get_next_count_rx(pdcp_entity, srb_flagP, current_sn);
decrypt_params.count = pdcp_get_next_count_rx(pdcp_pP, srb_flagP, current_sn);
decrypt_params.message = &pdcp_pdu_buffer[pdcp_header_len];
decrypt_params.blength = (sdu_buffer_size - pdcp_header_len) << 3;
decrypt_params.key_length = 16;
if (srb_flagP) {
LOG_D(PDCP, "[OSA][RB %d] %s Validating control-plane security\n",
rb_id, (pdcp_entity->is_ue != 0) ? "eNB -> UE" : "UE -> eNB");
decrypt_params.key = pdcp_entity->kRRCenc;// + 128;
rb_id, (pdcp_pP->is_ue != 0) ? "eNB -> UE" : "UE -> eNB");
decrypt_params.key = pdcp_pP->kRRCenc;// + 128;
} else {
LOG_D(PDCP, "[OSA][RB %d] %s Validating user-plane security\n",
rb_id, (pdcp_entity->is_ue != 0) ? "eNB -> UE" : "UE -> eNB");
decrypt_params.key = pdcp_entity->kUPenc;// + 128;
rb_id, (pdcp_pP->is_ue != 0) ? "eNB -> UE" : "UE -> eNB");
decrypt_params.key = pdcp_pP->kUPenc;// + 128;
}
/* Uncipher the block */
stream_decrypt(pdcp_entity->cipheringAlgorithm,
stream_decrypt(pdcp_pP->cipheringAlgorithm,
&decrypt_params,
&buffer_decrypted);
......@@ -231,13 +232,18 @@ pdcp_validate_security(
/* Now check the integrity of the complete PDU */
decrypt_params.message = pdcp_pdu_buffer;
decrypt_params.blength = sdu_buffer_size << 3;
decrypt_params.key = pdcp_entity->kRRCint + 16;// 128;
decrypt_params.key = pdcp_pP->kRRCint + 16;// 128;
if (stream_check_integrity(pdcp_entity->integrityProtAlgorithm,
if (stream_check_integrity(pdcp_pP->integrityProtAlgorithm,
&decrypt_params,
&pdcp_pdu_buffer[sdu_buffer_size]) != 0) {
MSC_LOG_EVENT(
(ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE,
" Security: failed MAC-I Algo %X UE %"PRIx16" ",
pdcp_pP->integrityProtAlgorithm,
ctxt_pP->rnti);
LOG_E(PDCP, "[OSA][RB %d] %s failed to validate MAC-I of incoming PDU\n",
rb_id, (pdcp_entity->is_ue != 0) ? "UE" : "eNB");
rb_id, (pdcp_pP->is_ue != 0) ? "UE" : "eNB");
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_VALIDATE_SECURITY, VCD_FUNCTION_OUT);
return -1;
}
......
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