mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-03-13 04:13:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

mesh: use mesh_network_pdu for unsegmented control and access messages, sort functions

Browse Source
This commit is contained in:
Matthias Ringwald 2020-03-25 18:17:12 +01:00
parent a97cf70aa5
commit e9c1630436
2 changed files with 314 additions and 336 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/mesh/mesh_lower_transport.c
View File

@ -133,6 +133,7 @@ static mesh_segmented_pdu_t lower_transport_outgoing_segmented_message_singl
static mesh_segmented_pdu_t * lower_transport_outgoing_message;
static mesh_unsegmented_pdu_t * lower_transport_outgoing_unsegmented_pdu;
static mesh_network_pdu_t * lower_transport_outgoing_network_pdu;
// segment at network layer
static int lower_transport_outgoing_segment_queued;
@ -867,9 +868,9 @@ void mesh_lower_transport_send_pdu(mesh_pdu_t *pdu){
mesh_unsegmented_pdu_t * unsegmented_pdu;
mesh_network_pdu_t * network_pdu;
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UNSEGMENTED:
unsegmented_pdu = (mesh_unsegmented_pdu_t *) pdu;
network_pdu = unsegmented_pdu->segment;
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
network_pdu = (mesh_network_pdu_t *) pdu;
btstack_assert(network_pdu->len >= 9);
break;
case MESH_PDU_TYPE_SEGMENTED:
@ -907,10 +908,12 @@ static void mesh_lower_transport_run(void){
mesh_segmented_pdu_t * message_pdu;
mesh_pdu_t * pdu = (mesh_pdu_t *) btstack_linked_list_pop(&lower_transport_outgoing);
switch (pdu->pdu_type) {
case MESH_PDU_TYPE_UNSEGMENTED:
lower_transport_outgoing_unsegmented_pdu = (mesh_unsegmented_pdu_t *) pdu;
network_pdu = lower_transport_outgoing_unsegmented_pdu->segment;
mesh_network_send_pdu(network_pdu);
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
// lower_transport_outgoing_unsegmented_pdu = (mesh_unsegmented_pdu_t *) pdu;
// network_pdu = lower_transport_outgoing_unsegmented_pdu->segment;
lower_transport_outgoing_network_pdu = (mesh_network_pdu_t *) pdu;
mesh_network_send_pdu(lower_transport_outgoing_network_pdu);
break;
case MESH_PDU_TYPE_SEGMENTED:
message_pdu = (mesh_segmented_pdu_t *) pdu;

633
src/mesh/mesh_upper_transport.c
View File

@ -90,7 +90,6 @@ static mesh_control_pdu_t incoming_control_pdu_singleton;
static mesh_control_pdu_t * incoming_control_pdu;
static mesh_segmented_pdu_t outgoing_segmented_pdu_singleton;
static mesh_unsegmented_pdu_t outgoing_unsegmented_pdu_singleton;
static mesh_upper_transport_pdu_t * outgoing_upper_transport_pdu;
static uint8_t application_nonce[13];
@ -112,36 +111,6 @@ static btstack_linked_list_t upper_transport_outgoing;
// TODO: higher layer define used for assert
#define MESH_ACCESS_OPCODE_NOT_SET 0xFFFFFFFEu
void mesh_upper_transport_send_access_pdu(mesh_pdu_t *pdu){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_SEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
break;
default:
btstack_assert(false);
break;
}
btstack_linked_list_add_tail(&upper_transport_outgoing, (btstack_linked_item_t*) pdu);
mesh_upper_transport_run();
}
void mesh_upper_transport_send_control_pdu(mesh_pdu_t * pdu){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_SEGMENTED_CONTROL:
break;
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
btstack_assert( ((mesh_network_pdu_t *) pdu)->len >= 9);
break;
default:
btstack_assert(false);
break;
}
btstack_linked_list_add_tail(&upper_transport_outgoing, (btstack_linked_item_t*) pdu);
mesh_upper_transport_run();
}
static void mesh_print_hex(const char * name, const uint8_t * data, uint16_t len){
printf("%-20s ", name);
printf_hexdump(data, len);
@ -314,6 +283,42 @@ void mesh_upper_transport_reset(void){
mesh_upper_transport_reset_pdus(&upper_transport_incoming);
}
static mesh_transport_key_t * mesh_upper_transport_get_outgoing_appkey(uint16_t netkey_index, uint16_t appkey_index){
// Device Key is fixed
if (appkey_index == MESH_DEVICE_KEY_INDEX) {
return mesh_transport_key_get(appkey_index);
}
// Get key refresh state from subnet
mesh_subnet_t * subnet = mesh_subnet_get_by_netkey_index(netkey_index);
if (subnet == NULL) return NULL;
// identify old and new app keys for given appkey_index
mesh_transport_key_t * old_key = NULL;
mesh_transport_key_t * new_key = NULL;
mesh_transport_key_iterator_t it;
mesh_transport_key_iterator_init(&it, netkey_index);
while (mesh_transport_key_iterator_has_more(&it)){
mesh_transport_key_t * transport_key = mesh_transport_key_iterator_get_next(&it);
if (transport_key->appkey_index != appkey_index) continue;
if (transport_key->old_key == 0) {
new_key = transport_key;
} else {
old_key = transport_key;
}
}
// if no key is marked as old, just use the current one
if (old_key == NULL) return new_key;
// use new key if it exists in phase two
if ((subnet->key_refresh == MESH_KEY_REFRESH_SECOND_PHASE) && (new_key != NULL)){
return new_key;
} else {
return old_key;
}
}
static uint32_t iv_index_for_ivi_nid(uint8_t ivi_nid){
// get IV Index and IVI
uint32_t iv_index = mesh_get_iv_index();
@ -528,258 +533,7 @@ static void mesh_upper_transport_message_received(mesh_pdu_t * pdu){
mesh_upper_transport_run();
}
static void mesh_upper_transport_send_segmented_pdu(mesh_upper_transport_pdu_t * upper_pdu){
outgoing_upper_transport_pdu = upper_pdu;
mesh_segmented_pdu_t * message_pdu = &outgoing_segmented_pdu_singleton;
message_pdu->pdu_header.pdu_type = MESH_PDU_TYPE_SEGMENTED;
// lend segments to lower transport pdu
message_pdu->segments = upper_pdu->segments;
upper_pdu->segments = NULL;
// copy meta
message_pdu->len = upper_pdu->len;
message_pdu->netkey_index = upper_pdu->netkey_index;
message_pdu->transmic_len =0; // no TransMIC for control
message_pdu->akf_aid_control = upper_pdu->akf_aid_control;
message_pdu->flags = upper_pdu->flags;
// setup message_pdu header
// TODO: use fields in mesh_segmented_pdu_t and setup network header in lower transport
message_pdu->network_header[0] = upper_pdu->ivi_nid;
message_pdu->network_header[1] = upper_pdu->ctl_ttl;
big_endian_store_24(message_pdu->network_header, 2, upper_pdu->seq);
big_endian_store_16(message_pdu->network_header, 5, upper_pdu->src);
big_endian_store_16(message_pdu->network_header, 7, upper_pdu->dst);
mesh_lower_transport_send_pdu((mesh_pdu_t*) message_pdu);
}
static uint8_t mesh_upper_transport_setup_unsegmented_control_pdu(mesh_network_pdu_t * network_pdu, uint16_t netkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t opcode,
const uint8_t * control_pdu_data, uint16_t control_pdu_len){
if (control_pdu_len > 11) return 1;
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
uint8_t transport_pdu_data[12];
transport_pdu_data[0] = opcode;
(void)memcpy(&transport_pdu_data[1], control_pdu_data, control_pdu_len);
uint16_t transport_pdu_len = control_pdu_len + 1;
// setup network_pdu
mesh_network_setup_pdu(network_pdu, netkey_index, network_key->nid, 1, ttl, 0, src, dest, transport_pdu_data, transport_pdu_len);
return 0;
}
static uint8_t mesh_upper_transport_setup_segmented_control_pdu(mesh_upper_transport_pdu_t * upper_pdu, uint16_t netkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t opcode,
const uint8_t * control_pdu_data, uint16_t control_pdu_len){
if (control_pdu_len > 256) return 1;
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
upper_pdu->ivi_nid = network_key->nid | ((mesh_get_iv_index_for_tx() & 1) << 7);
upper_pdu->ctl_ttl = ttl;
upper_pdu->src = src;
upper_pdu->dst = dest;
upper_pdu->transmic_len = 0; // no TransMIC for control
upper_pdu->netkey_index = netkey_index;
upper_pdu->akf_aid_control = opcode;
mesh_segmented_append_payload(control_pdu_data, control_pdu_len, &upper_pdu->segments);
upper_pdu->len = control_pdu_len;
return 0;
}
uint8_t mesh_upper_transport_setup_control_pdu(mesh_pdu_t * pdu, uint16_t netkey_index,
uint8_t ttl, uint16_t src, uint16_t dest, uint8_t opcode, const uint8_t * control_pdu_data, uint16_t control_pdu_len){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
return mesh_upper_transport_setup_unsegmented_control_pdu((mesh_network_pdu_t *) pdu, netkey_index, ttl, src, dest, opcode, control_pdu_data, control_pdu_len);
case MESH_PDU_TYPE_UPPER_SEGMENTED_CONTROL:
return mesh_upper_transport_setup_segmented_control_pdu((mesh_upper_transport_pdu_t *) pdu, netkey_index, ttl, src, dest, opcode, control_pdu_data, control_pdu_len);
default:
btstack_assert(0);
return 1;
}
}
static uint8_t mesh_upper_transport_setup_unsegmented_access_pdu_header(mesh_unsegmented_pdu_t * unsegmented_pdu, uint16_t netkey_index,
uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest){
mesh_network_pdu_t * network_pdu = unsegmented_pdu->segment;
// get app or device key
const mesh_transport_key_t * appkey;
appkey = mesh_transport_key_get(appkey_index);
if (appkey == NULL){
printf("appkey_index %x unknown\n", appkey_index);
return 1;
}
uint8_t akf_aid = (appkey->akf << 6) | appkey->aid;
// lookup network by netkey_index
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
unsegmented_pdu->appkey_index = appkey_index;
network_pdu->data[9] = akf_aid;
// setup network_pdu
mesh_network_setup_pdu_header(network_pdu, netkey_index, network_key->nid, 0, ttl, 0, src, dest);
return 0;
}
static uint8_t mesh_upper_transport_setup_segmented_access_pdu_header(mesh_access_pdu_t * access_pdu, uint16_t netkey_index,
uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic){
// get app or device key
const mesh_transport_key_t *appkey;
appkey = mesh_transport_key_get(appkey_index);
if (appkey == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - appkey_index %x unknown\n", appkey_index);
return 1;
}
uint8_t akf_aid = (appkey->akf << 6) | appkey->aid;
// lookup network by netkey_index
const mesh_network_key_t *network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
if (network_key == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - netkey_index %x unknown\n", appkey_index);
return 1;
}
const uint8_t trans_mic_len = szmic ? 8 : 4;
// store in transport pdu
access_pdu->transmic_len = trans_mic_len;
access_pdu->netkey_index = netkey_index;
access_pdu->appkey_index = appkey_index;
access_pdu->akf_aid_control = akf_aid;
mesh_access_set_nid_ivi(access_pdu, network_key->nid | ((mesh_get_iv_index_for_tx() & 1) << 7));
mesh_access_set_src(access_pdu, src);
mesh_access_set_dest(access_pdu, dest);
mesh_access_set_ctl_ttl(access_pdu, ttl);
return 0;
}
static uint8_t mesh_upper_transport_setup_upper_access_pdu_header(mesh_upper_transport_pdu_t * upper_pdu, uint16_t netkey_index,
uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic){
// get app or device key
const mesh_transport_key_t *appkey;
appkey = mesh_transport_key_get(appkey_index);
if (appkey == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - appkey_index %x unknown\n", appkey_index);
return 1;
}
uint8_t akf_aid = (appkey->akf << 6) | appkey->aid;
// lookup network by netkey_index
const mesh_network_key_t *network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
if (network_key == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - netkey_index %x unknown\n", appkey_index);
return 1;
}
const uint8_t trans_mic_len = szmic ? 8 : 4;
// store in transport pdu
upper_pdu->ivi_nid = network_key->nid | ((mesh_get_iv_index_for_tx() & 1) << 7);
upper_pdu->ctl_ttl = ttl;
upper_pdu->src = src;
upper_pdu->dst = dest;
upper_pdu->transmic_len = trans_mic_len;
upper_pdu->netkey_index = netkey_index;
upper_pdu->appkey_index = appkey_index;
upper_pdu->akf_aid_control = akf_aid;
return 0;
}
static uint8_t mesh_upper_transport_setup_upper_access_pdu(mesh_upper_transport_pdu_t * upper_pdu, uint16_t netkey_index, uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest,
uint8_t szmic, const uint8_t * access_pdu_data, uint8_t access_pdu_len){
int status = mesh_upper_transport_setup_upper_access_pdu_header(upper_pdu, netkey_index, appkey_index, ttl, src,
dest, szmic);
if (status) return status;
// store in transport pdu
mesh_segmented_append_payload(access_pdu_data, access_pdu_len, &upper_pdu->segments);
upper_pdu->len = access_pdu_len;
return 0;
}
uint8_t mesh_upper_transport_setup_access_pdu_header(mesh_pdu_t * pdu, uint16_t netkey_index, uint16_t appkey_index,
uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_ACCESS:
return mesh_upper_transport_setup_segmented_access_pdu_header((mesh_access_pdu_t *) pdu, netkey_index, appkey_index, ttl, src, dest, szmic);
case MESH_PDU_TYPE_UNSEGMENTED:
return mesh_upper_transport_setup_unsegmented_access_pdu_header((mesh_unsegmented_pdu_t *) pdu, netkey_index, appkey_index, ttl, src, dest);
default:
btstack_assert(false);
return 1;
}
}
uint8_t mesh_upper_transport_setup_access_pdu(mesh_pdu_t * pdu, uint16_t netkey_index, uint16_t appkey_index,
uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic,
const uint8_t * access_pdu_data, uint8_t access_pdu_len){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_SEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
return mesh_upper_transport_setup_upper_access_pdu((mesh_upper_transport_pdu_t *) pdu, netkey_index,
appkey_index, ttl, src, dest, szmic, access_pdu_data,
access_pdu_len);
default:
btstack_assert(false);
return 1;
}
}
static mesh_transport_key_t * mesh_upper_transport_get_outgoing_appkey(uint16_t netkey_index, uint16_t appkey_index){
// Device Key is fixed
if (appkey_index == MESH_DEVICE_KEY_INDEX) {
return mesh_transport_key_get(appkey_index);
}
// Get key refresh state from subnet
mesh_subnet_t * subnet = mesh_subnet_get_by_netkey_index(netkey_index);
if (subnet == NULL) return NULL;
// identify old and new app keys for given appkey_index
mesh_transport_key_t * old_key = NULL;
mesh_transport_key_t * new_key = NULL;
mesh_transport_key_iterator_t it;
mesh_transport_key_iterator_init(&it, netkey_index);
while (mesh_transport_key_iterator_has_more(&it)){
mesh_transport_key_t * transport_key = mesh_transport_key_iterator_get_next(&it);
if (transport_key->appkey_index != appkey_index) continue;
if (transport_key->old_key == 0) {
new_key = transport_key;
} else {
old_key = transport_key;
}
}
// if no key is marked as old, just use the current one
if (old_key == NULL) return new_key;
// use new key if it exists in phase two
if ((subnet->key_refresh == MESH_KEY_REFRESH_SECOND_PHASE) && (new_key != NULL)){
return new_key;
} else {
return old_key;
}
}
static void mesh_upper_transport_send_upper_segmented_pdu(mesh_upper_transport_pdu_t * upper_pdu){
static void mesh_upper_transport_send_access_segmented(mesh_upper_transport_pdu_t * upper_pdu){
// TODO: store upper pdu in outgoing pdus active or similar
outgoing_upper_transport_pdu = upper_pdu;
@ -809,20 +563,17 @@ static void mesh_upper_transport_send_upper_segmented_pdu(mesh_upper_transport_p
mesh_lower_transport_send_pdu((mesh_pdu_t*) message_pdu);
}
static void mesh_upper_transport_send_upper_unsegmented_pdu(mesh_upper_transport_pdu_t * upper_pdu){
static void mesh_upper_transport_send_access_unsegmented(mesh_upper_transport_pdu_t * upper_pdu){
// TODO: store upper pdu in outgoing pdus active or similar
outgoing_upper_transport_pdu = upper_pdu;
mesh_unsegmented_pdu_t * unsegmented_pdu = &outgoing_unsegmented_pdu_singleton;
unsegmented_pdu->pdu_header.pdu_type = MESH_PDU_TYPE_UNSEGMENTED;
// provide segment
mesh_network_pdu_t * network_pdu = mesh_network_pdu_get();
btstack_assert(network_pdu);
unsegmented_pdu->segment = network_pdu;
// setup network pdu
network_pdu->pdu_header.pdu_type = MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS;
network_pdu->data[0] = upper_pdu->ivi_nid;
network_pdu->data[1] = upper_pdu->ctl_ttl;
big_endian_store_24(network_pdu->data, 2, upper_pdu->seq);
@ -830,17 +581,17 @@ static void mesh_upper_transport_send_upper_unsegmented_pdu(mesh_upper_transport
big_endian_store_16(network_pdu->data, 7, upper_pdu->dst);
network_pdu->netkey_index = upper_pdu->netkey_index;
// setup acess message
// setup access message
network_pdu->data[9] = upper_pdu->akf_aid_control;
btstack_assert(upper_pdu->len < 15);
(void)memcpy(&network_pdu->data[10], crypto_buffer, upper_pdu->len);
network_pdu->len = 10 + upper_pdu->len;
network_pdu->flags = 0;
mesh_lower_transport_send_pdu((mesh_pdu_t*) unsegmented_pdu);
mesh_lower_transport_send_pdu((mesh_pdu_t*) network_pdu);
}
static void mesh_upper_transport_send_upper_access_pdu_ccm(void * arg){
static void mesh_upper_transport_send_access_ccm(void * arg){
crypto_active = 0;
mesh_upper_transport_pdu_t * upper_pdu = (mesh_upper_transport_pdu_t *) arg;
@ -852,24 +603,24 @@ static void mesh_upper_transport_send_upper_access_pdu_ccm(void * arg){
mesh_print_hex("UpperTransportPDU", crypto_buffer, upper_pdu->len);
switch (upper_pdu->pdu_header.pdu_type){
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
mesh_upper_transport_send_upper_unsegmented_pdu(upper_pdu);
mesh_upper_transport_send_access_unsegmented(upper_pdu);
break;
case MESH_PDU_TYPE_UPPER_SEGMENTED_ACCESS:
mesh_upper_transport_send_upper_segmented_pdu(upper_pdu);
mesh_upper_transport_send_access_segmented(upper_pdu);
break;
default:
btstack_assert(false);
}
}
static void mesh_upper_transport_send_upper_access_pdu_digest(void *arg){
static void mesh_upper_transport_send_access_digest(void *arg){
mesh_upper_transport_pdu_t * upper_pdu = (mesh_upper_transport_pdu_t *) arg;
uint16_t access_pdu_len = upper_pdu->len;
btstack_crypto_ccm_encrypt_block(&ccm, access_pdu_len, crypto_buffer, crypto_buffer,
&mesh_upper_transport_send_upper_access_pdu_ccm, upper_pdu);
&mesh_upper_transport_send_access_ccm, upper_pdu);
}
static void mesh_upper_transport_send_upper_access_pdu(mesh_upper_transport_pdu_t * upper_pdu){
static void mesh_upper_transport_send_access(mesh_upper_transport_pdu_t * upper_pdu){
// if dst is virtual address, lookup label uuid and hash
uint16_t aad_len = 0;
@ -932,9 +683,9 @@ static void mesh_upper_transport_send_upper_access_pdu(mesh_upper_transport_pdu_
if (virtual_address){
mesh_print_hex("LabelUUID", virtual_address->label_uuid, 16);
btstack_crypto_ccm_digest(&ccm, virtual_address->label_uuid, 16,
&mesh_upper_transport_send_upper_access_pdu_digest, upper_pdu);
&mesh_upper_transport_send_access_digest, upper_pdu);
} else {
mesh_upper_transport_send_upper_access_pdu_digest(upper_pdu);
mesh_upper_transport_send_access_digest(upper_pdu);
}
}
@ -948,13 +699,9 @@ static void mesh_upper_transport_send_unsegmented_control_pdu(mesh_network_pdu_t
uint8_t opcode = network_pdu->data[9];
printf("[+] Upper transport, send unsegmented Control PDU %p - seq %06x opcode %02x\n", network_pdu, seq, opcode);
mesh_print_hex("Access Payload", &network_pdu->data[10], network_pdu->len - 10);
// wrap into mesh-unsegmented-pdu
outgoing_unsegmented_pdu_singleton.pdu_header.pdu_type = MESH_PDU_TYPE_UNSEGMENTED;
outgoing_unsegmented_pdu_singleton.segment = network_pdu;
outgoing_unsegmented_pdu_singleton.flags = MESH_TRANSPORT_FLAG_CONTROL;
// send
mesh_lower_transport_send_pdu((mesh_pdu_t *) &outgoing_unsegmented_pdu_singleton);
mesh_lower_transport_send_pdu((mesh_pdu_t *) network_pdu);
}
static void mesh_upper_transport_send_segmented_control_pdu(mesh_upper_transport_pdu_t * upper_pdu){
@ -969,7 +716,30 @@ static void mesh_upper_transport_send_segmented_control_pdu(mesh_upper_transport
// printf("[+] Upper transport, send segmented Control PDU %p - seq %06x opcode %02x\n", upper_pdu, seq, opcode);
// mesh_print_hex("Access Payload", &upper_pdu->data[1], upper_pdu->len - 1);
// send
mesh_upper_transport_send_segmented_pdu(upper_pdu);
outgoing_upper_transport_pdu = upper_pdu;
mesh_segmented_pdu_t *messagePdu = &outgoing_segmented_pdu_singleton;
messagePdu->pdu_header.pdu_type = MESH_PDU_TYPE_SEGMENTED;
// lend segments to lower transport pdu
messagePdu->segments = upper_pdu->segments;
upper_pdu->segments = NULL;
// copy meta
messagePdu->len = upper_pdu->len;
messagePdu->netkey_index = upper_pdu->netkey_index;
messagePdu->transmic_len = 0; // no TransMIC for control
messagePdu->akf_aid_control = upper_pdu->akf_aid_control;
messagePdu->flags = upper_pdu->flags;
// setup message_pdu header
// TODO: use fields in mesh_segmented_pdu_t and setup network header in lower transport
messagePdu->network_header[0] = upper_pdu->ivi_nid;
messagePdu->network_header[1] = upper_pdu->ctl_ttl;
big_endian_store_24(messagePdu->network_header, 2, upper_pdu->seq);
big_endian_store_16(messagePdu->network_header, 5, upper_pdu->src);
big_endian_store_16(messagePdu->network_header, 7, upper_pdu->dst);
mesh_lower_transport_send_pdu((mesh_pdu_t *) messagePdu);
}
static void mesh_upper_transport_run(void){
@ -1109,16 +879,18 @@ static void mesh_upper_transport_run(void){
(void) btstack_linked_list_pop(&upper_transport_outgoing);
mesh_unsegmented_pdu_t * unsegmented_pdu;
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
btstack_assert(mesh_pdu_ctl(pdu) != 0);
mesh_upper_transport_send_unsegmented_control_pdu((mesh_network_pdu_t *) pdu);
break;
case MESH_PDU_TYPE_UPPER_SEGMENTED_CONTROL:
mesh_upper_transport_send_segmented_control_pdu((mesh_upper_transport_pdu_t *) pdu);
break;
case MESH_PDU_TYPE_UPPER_SEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
mesh_upper_transport_send_upper_access_pdu((mesh_upper_transport_pdu_t *) pdu);
mesh_upper_transport_send_access((mesh_upper_transport_pdu_t *) pdu);
break;
default:
btstack_assert(false);
@ -1127,11 +899,9 @@ static void mesh_upper_transport_run(void){
}
}
static void mesh_upper_transport_pdu_handler(mesh_transport_callback_type_t callback_type, mesh_transport_status_t status, mesh_pdu_t * pdu){
mesh_pdu_t * pdu_to_report;
mesh_unsegmented_pdu_t * unsegmented_pdu;
mesh_upper_transport_pdu_t * upper_pdu;
switch (callback_type){
case MESH_TRANSPORT_PDU_RECEIVED:
mesh_upper_transport_message_received(pdu);
@ -1153,26 +923,13 @@ static void mesh_upper_transport_pdu_handler(mesh_transport_callback_type_t call
mesh_access_message_handler(callback_type, status, pdu_to_report);
}
break;
case MESH_PDU_TYPE_UNSEGMENTED:
unsegmented_pdu = (mesh_unsegmented_pdu_t *) pdu;
if (unsegmented_pdu == &outgoing_unsegmented_pdu_singleton){
if ((unsegmented_pdu->flags & MESH_TRANSPORT_FLAG_CONTROL) == 0){
// notify upper layer but use network pdu (control pdu)
mesh_network_pdu_t * network_pdu = outgoing_unsegmented_pdu_singleton.segment;
outgoing_unsegmented_pdu_singleton.segment = NULL;
mesh_control_message_handler(callback_type, status, (mesh_pdu_t *) network_pdu);
} else {
// notify upper layer but use upper access pdu
mesh_network_pdu_t * network_pdu = outgoing_unsegmented_pdu_singleton.segment;
outgoing_unsegmented_pdu_singleton.segment = NULL;
mesh_network_pdu_free(network_pdu);
pdu_to_report = (mesh_pdu_t *) outgoing_upper_transport_pdu;
mesh_access_message_handler(callback_type, status, pdu_to_report);
}
} else {
btstack_assert((unsegmented_pdu->flags & MESH_TRANSPORT_FLAG_CONTROL) == 0);
mesh_access_message_handler(callback_type, status, pdu);
}
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
upper_pdu = outgoing_upper_transport_pdu;
outgoing_upper_transport_pdu = NULL;
mesh_access_message_handler(callback_type, status, (mesh_pdu_t*) upper_pdu);
break;
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
mesh_access_message_handler(callback_type, status, pdu);
break;
default:
btstack_assert(false);
@ -1216,6 +973,224 @@ void mesh_upper_transport_message_processed_by_higher_layer(mesh_pdu_t * pdu){
}
}
void mesh_upper_transport_send_access_pdu(mesh_pdu_t *pdu){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_SEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
break;
default:
btstack_assert(false);
break;
}
btstack_linked_list_add_tail(&upper_transport_outgoing, (btstack_linked_item_t*) pdu);
mesh_upper_transport_run();
}
void mesh_upper_transport_send_control_pdu(mesh_pdu_t * pdu){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_SEGMENTED_CONTROL:
break;
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
btstack_assert( ((mesh_network_pdu_t *) pdu)->len >= 9);
break;
default:
btstack_assert(false);
break;
}
btstack_linked_list_add_tail(&upper_transport_outgoing, (btstack_linked_item_t*) pdu);
mesh_upper_transport_run();
}
static uint8_t mesh_upper_transport_setup_unsegmented_control_pdu(mesh_network_pdu_t * network_pdu, uint16_t netkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t opcode,
const uint8_t * control_pdu_data, uint16_t control_pdu_len){
if (control_pdu_len > 11) return 1;
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
uint8_t transport_pdu_data[12];
transport_pdu_data[0] = opcode;
(void)memcpy(&transport_pdu_data[1], control_pdu_data, control_pdu_len);
uint16_t transport_pdu_len = control_pdu_len + 1;
// setup network_pdu
mesh_network_setup_pdu(network_pdu, netkey_index, network_key->nid, 1, ttl, 0, src, dest, transport_pdu_data, transport_pdu_len);
return 0;
}
static uint8_t mesh_upper_transport_setup_segmented_control_pdu(mesh_upper_transport_pdu_t * upper_pdu, uint16_t netkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t opcode,
const uint8_t * control_pdu_data, uint16_t control_pdu_len){
if (control_pdu_len > 256) return 1;
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
upper_pdu->ivi_nid = network_key->nid | ((mesh_get_iv_index_for_tx() & 1) << 7);
upper_pdu->ctl_ttl = ttl;
upper_pdu->src = src;
upper_pdu->dst = dest;
upper_pdu->transmic_len = 0; // no TransMIC for control
upper_pdu->netkey_index = netkey_index;
upper_pdu->akf_aid_control = opcode;
mesh_segmented_append_payload(control_pdu_data, control_pdu_len, &upper_pdu->segments);
upper_pdu->len = control_pdu_len;
return 0;
}
uint8_t mesh_upper_transport_setup_control_pdu(mesh_pdu_t * pdu, uint16_t netkey_index,
uint8_t ttl, uint16_t src, uint16_t dest, uint8_t opcode, const uint8_t * control_pdu_data, uint16_t control_pdu_len){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_CONTROL:
return mesh_upper_transport_setup_unsegmented_control_pdu((mesh_network_pdu_t *) pdu, netkey_index, ttl, src, dest, opcode, control_pdu_data, control_pdu_len);
case MESH_PDU_TYPE_UPPER_SEGMENTED_CONTROL:
return mesh_upper_transport_setup_segmented_control_pdu((mesh_upper_transport_pdu_t *) pdu, netkey_index, ttl, src, dest, opcode, control_pdu_data, control_pdu_len);
default:
btstack_assert(0);
return 1;
}
}
static uint8_t mesh_upper_transport_setup_unsegmented_access_pdu_header(mesh_unsegmented_pdu_t * unsegmented_pdu, uint16_t netkey_index,
uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest){
mesh_network_pdu_t * network_pdu = unsegmented_pdu->segment;
// get app or device key
const mesh_transport_key_t * appkey;
appkey = mesh_transport_key_get(appkey_index);
if (appkey == NULL){
printf("appkey_index %x unknown\n", appkey_index);
return 1;
}
uint8_t akf_aid = (appkey->akf << 6) | appkey->aid;
// lookup network by netkey_index
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
unsegmented_pdu->appkey_index = appkey_index;
network_pdu->data[9] = akf_aid;
// setup network_pdu
mesh_network_setup_pdu_header(network_pdu, netkey_index, network_key->nid, 0, ttl, 0, src, dest);
return 0;
}
static uint8_t mesh_upper_transport_setup_segmented_access_pdu_header(mesh_access_pdu_t * access_pdu, uint16_t netkey_index,
uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic){
// get app or device key
const mesh_transport_key_t *appkey;
appkey = mesh_transport_key_get(appkey_index);
if (appkey == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - appkey_index %x unknown\n", appkey_index);
return 1;
}
uint8_t akf_aid = (appkey->akf << 6) | appkey->aid;
// lookup network by netkey_index
const mesh_network_key_t *network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
if (network_key == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - netkey_index %x unknown\n", appkey_index);
return 1;
}
const uint8_t trans_mic_len = szmic ? 8 : 4;
// store in transport pdu
access_pdu->transmic_len = trans_mic_len;
access_pdu->netkey_index = netkey_index;
access_pdu->appkey_index = appkey_index;
access_pdu->akf_aid_control = akf_aid;
mesh_access_set_nid_ivi(access_pdu, network_key->nid | ((mesh_get_iv_index_for_tx() & 1) << 7));
mesh_access_set_src(access_pdu, src);
mesh_access_set_dest(access_pdu, dest);
mesh_access_set_ctl_ttl(access_pdu, ttl);
return 0;
}
static uint8_t mesh_upper_transport_setup_upper_access_pdu_header(mesh_upper_transport_pdu_t * upper_pdu, uint16_t netkey_index,
uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic){
// get app or device key
const mesh_transport_key_t *appkey;
appkey = mesh_transport_key_get(appkey_index);
if (appkey == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - appkey_index %x unknown\n", appkey_index);
return 1;
}
uint8_t akf_aid = (appkey->akf << 6) | appkey->aid;
// lookup network by netkey_index
const mesh_network_key_t *network_key = mesh_network_key_list_get(netkey_index);
if (!network_key) return 1;
if (network_key == NULL) {
printf("[!] Upper transport, setup segmented Access PDU - netkey_index %x unknown\n", appkey_index);
return 1;
}
const uint8_t trans_mic_len = szmic ? 8 : 4;
// store in transport pdu
upper_pdu->ivi_nid = network_key->nid | ((mesh_get_iv_index_for_tx() & 1) << 7);
upper_pdu->ctl_ttl = ttl;
upper_pdu->src = src;
upper_pdu->dst = dest;
upper_pdu->transmic_len = trans_mic_len;
upper_pdu->netkey_index = netkey_index;
upper_pdu->appkey_index = appkey_index;
upper_pdu->akf_aid_control = akf_aid;
return 0;
}
static uint8_t mesh_upper_transport_setup_upper_access_pdu(mesh_upper_transport_pdu_t * upper_pdu, uint16_t netkey_index, uint16_t appkey_index, uint8_t ttl, uint16_t src, uint16_t dest,
uint8_t szmic, const uint8_t * access_pdu_data, uint8_t access_pdu_len){
int status = mesh_upper_transport_setup_upper_access_pdu_header(upper_pdu, netkey_index, appkey_index, ttl, src,
dest, szmic);
if (status) return status;
// store in transport pdu
mesh_segmented_append_payload(access_pdu_data, access_pdu_len, &upper_pdu->segments);
upper_pdu->len = access_pdu_len;
return 0;
}
uint8_t mesh_upper_transport_setup_access_pdu_header(mesh_pdu_t * pdu, uint16_t netkey_index, uint16_t appkey_index,
uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_ACCESS:
return mesh_upper_transport_setup_segmented_access_pdu_header((mesh_access_pdu_t *) pdu, netkey_index, appkey_index, ttl, src, dest, szmic);
case MESH_PDU_TYPE_UNSEGMENTED:
return mesh_upper_transport_setup_unsegmented_access_pdu_header((mesh_unsegmented_pdu_t *) pdu, netkey_index, appkey_index, ttl, src, dest);
default:
btstack_assert(false);
return 1;
}
}
uint8_t mesh_upper_transport_setup_access_pdu(mesh_pdu_t * pdu, uint16_t netkey_index, uint16_t appkey_index,
uint8_t ttl, uint16_t src, uint16_t dest, uint8_t szmic,
const uint8_t * access_pdu_data, uint8_t access_pdu_len){
switch (pdu->pdu_type){
case MESH_PDU_TYPE_UPPER_SEGMENTED_ACCESS:
case MESH_PDU_TYPE_UPPER_UNSEGMENTED_ACCESS:
return mesh_upper_transport_setup_upper_access_pdu((mesh_upper_transport_pdu_t *) pdu, netkey_index,
appkey_index, ttl, src, dest, szmic, access_pdu_data,
access_pdu_len);
default:
btstack_assert(false);
return 1;
}
}
void mesh_upper_transport_register_access_message_handler(void (*callback)(mesh_transport_callback_type_t callback_type, mesh_transport_status_t status, mesh_pdu_t * pdu)) {
mesh_access_message_handler = callback;
}