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att_server: support ecbm connections

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This commit is contained in:
Matthias Ringwald 2023-05-17 14:59:03 +02:00
parent 7a293e2207
commit c2cbe11787
1 changed files with 37 additions and 15 deletions
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52
src/ble/att_server.c
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@ -112,6 +112,18 @@ static att_write_callback_t att_server_client_write_callback;
// round robin
static hci_con_handle_t att_server_last_can_send_now = HCI_CON_HANDLE_INVALID;
#ifdef ENABLE_GATT_OVER_EATT
typedef struct {
btstack_linked_item_t item;
att_server_t att_server;
att_connection_t att_connection;
uint8_t * receive_buffer;
uint8_t * send_buffer;
} att_server_eatt_bearer_t;
static btstack_linked_list_t att_server_eatt_bearer_pool;
static btstack_linked_list_t att_server_eatt_bearer_active;
#endif
#ifdef ENABLE_LE_SIGNED_WRITE
static bool att_server_connections_for_state(att_server_state_t state, att_server_t ** att_server_out, att_connection_t ** att_connection_out){
btstack_linked_list_iterator_t it;
@ -124,6 +136,19 @@ static bool att_server_connections_for_state(att_server_state_t state, att_serve
return true;
}
}
#ifdef ENABLE_GATT_OVER_EATT
btstack_linked_list_iterator_init(&it, &att_server_eatt_bearer_active);
while(btstack_linked_list_iterator_has_next(&it)){
att_server_eatt_bearer_t * eatt_bearer = (att_server_eatt_bearer_t *) btstack_linked_list_iterator_next(&it);
if (eatt_bearer->att_server.state == state) {
*att_server_out = &eatt_bearer->att_server;
*att_connection_out = &eatt_bearer->att_connection;
return true;
}
}
#endif
return false;
}
#endif
@ -559,6 +584,10 @@ static void att_signed_write_handle_cmac_result(uint8_t hash[8]){
att_connection_t * att_connection = NULL;
bool found = att_server_connections_for_state(ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, &att_server, &att_connection);
if (found == false){
return;
}
uint8_t hash_flipped[8];
reverse_64(hash, hash_flipped);
if (memcmp(hash_flipped, &att_server->request_buffer[att_server->request_size-8], 8) != 0){
@ -1370,16 +1399,6 @@ void att_server_deinit(void){
static uint16_t att_server_eatt_receive_buffer_size;
static uint16_t att_server_eatt_send_buffer_size;
typedef struct {
btstack_linked_item_t item;
att_server_t att_server;
att_connection_t att_connection;
uint8_t * receive_buffer;
uint8_t * send_buffer;
} att_server_eatt_bearer_t;
static btstack_linked_list_t att_server_eatt_bearer_pool;
static btstack_linked_list_t att_server_eatt_bearer_active;
static att_server_eatt_bearer_t * att_server_eatt_bearer_for_cid(uint16_t cid){
btstack_linked_list_iterator_t it;
@ -1446,7 +1465,7 @@ static void att_server_eatt_handler(uint8_t packet_type, uint16_t channel, uint8
cid = l2cap_event_ecbm_incoming_connection_get_local_cid(packet);
num_requested_bearers = l2cap_event_ecbm_incoming_connection_get_num_channels(packet);
for (i = 0; i < num_requested_bearers; i++){
eatt_bearers[i] = (att_server_eatt_bearer_t *) btstack_linked_list_get_first_item(&att_server_eatt_bearer_pool);
eatt_bearers[i] = (att_server_eatt_bearer_t *) btstack_linked_list_pop(&att_server_eatt_bearer_pool);
if (eatt_bearers[i] == NULL) {
break;
}
@ -1458,18 +1477,21 @@ static void att_server_eatt_handler(uint8_t packet_type, uint16_t channel, uint8
num_accepted_bearers = i;
status = l2cap_ecbm_accept_channels(cid, num_accepted_bearers, initial_credits, att_server_eatt_receive_buffer_size, receive_buffers, cids);
btstack_assert(status == ERROR_CODE_SUCCESS);
log_info("requested %u, accepted %u", num_requested_bearers, num_accepted_bearers);
for (i=0;i<num_accepted_bearers;i++){
log_info("eatt l2cap cid: 0x%04x", cids[i]);
eatt_bearers[i]->att_server.l2cap_cid = cids[i];
}
log_info("requested %u, accepted %u", num_requested_bearers, num_accepted_bearers);
break;
case L2CAP_EVENT_ECBM_CHANNEL_OPENED:
cid = l2cap_event_ecbm_channel_opened_get_local_cid(packet);
status = l2cap_event_channel_opened_get_status(packet);
remote_mtu = l2cap_event_channel_opened_get_remote_mtu(packet);
cid = l2cap_event_ecbm_channel_opened_get_local_cid(packet);
status = l2cap_event_ecbm_channel_opened_get_status(packet);
remote_mtu = l2cap_event_ecbm_channel_opened_get_remote_mtu(packet);
eatt_bearer = att_server_eatt_bearer_for_cid(cid);
btstack_assert(eatt_bearer != NULL);
eatt_bearer->att_connection.mtu_exchanged = true;
eatt_bearer->att_connection.mtu = remote_mtu;
eatt_bearer->att_connection.max_mtu = remote_mtu;
log_info("L2CAP_EVENT_ECBM_CHANNEL_OPENED - cid 0x%04x mtu %u, status 0x%02x", cid, remote_mtu, status);
break;