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hci: provide usable sco packet types

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This commit is contained in:
Matthias Ringwald 2023-06-01 11:12:03 +02:00
parent 29e39de45a
commit c92ca2c818
3 changed files with 49 additions and 2 deletions
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37
src/hci.c
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@ -1364,6 +1364,37 @@ uint16_t hci_usable_acl_packet_types(void){
return hci_stack->usable_packet_types_acl ^ 0x3306;
}
static const struct {
uint8_t feature_index;
uint16_t feature_packet_mask;
} hci_sco_packet_type_feature_requirements[] = {
{ 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets
{ 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets
{ 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets)
{ 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets
{ 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s
{ 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s
{ 47, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_3EV3 }, // 3-slot EDR eSCO packets
};
static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){
uint16_t packet_types = SCO_PACKET_TYPES_ALL;
unsigned int i;
// disable packet types due to missing local supported features
for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){
unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index;
bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0;
if (feature_set) continue;
log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask);
packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask;
}
return packet_types;
}
uint16_t hci_usable_sco_packet_types(void){
return hci_stack->usable_packet_types_sco;
}
#endif
uint8_t* hci_get_outgoing_packet_buffer(void){
@ -2790,7 +2821,11 @@ static void handle_command_complete_event(uint8_t * packet, uint16_t size){
#ifdef ENABLE_CLASSIC
// determine usable ACL packet types based on host buffer size and supported features
hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]);
log_info("ACL Packet types %04x, eSCO %u", hci_stack->usable_packet_types_acl, hci_extended_sco_link_supported());
log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl);
// determine usable SCO packet types based on supported features
hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features(
&hci_stack->local_supported_features[0]);
log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported());
#endif
// Classic/LE
log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported());

8
src/hci.h
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@ -1102,6 +1102,9 @@ typedef struct {
// usable ACL packet types given HCI_ACL_BUFFER_SIZE and local supported features
uint16_t usable_packet_types_acl;
// usable SCO packet types given local supported features
uint16_t usable_packet_types_sco;
/* hci state machine */
HCI_STATE state;
hci_substate_t substate;
@ -1569,6 +1572,11 @@ uint16_t hci_max_acl_data_packet_length(void);
*/
uint16_t hci_usable_acl_packet_types(void);
/**
* Get supported SCO packet types. Not flipped. Called by HFP
*/
uint16_t hci_usable_sco_packet_types(void);
/**
* Check if ACL packets marked as non flushable can be sent. Called by L2CAP
*/

6
test/hfp/mock.c
View File

@ -406,4 +406,8 @@ bool hci_extended_sco_link_supported(void){
bool gap_secure_connection(hci_con_handle_t con_handle){
UNUSED(con_handle);
return true;
}
}
uint16_t hci_usable_sco_packet_types(void){
return SCO_PACKET_TYPES_ALL;
}