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att_server: split bearer buffer into receive buffer and request buffer

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This commit is contained in:
Matthias Ringwald 2023-05-12 23:13:26 +02:00
parent 523bb989ed
commit 735b022275
1 changed files with 17 additions and 7 deletions
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24
src/ble/att_server.c
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@ -1327,7 +1327,9 @@ typedef struct {
btstack_linked_item_t item;
uint16_t l2cap_cid;
hci_con_handle_t con_handle;
uint8_t * reassemble_buffer;
uint8_t * receive_buffer;
uint8_t * request_buffer;
uint16_t request_len;
} 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;
@ -1363,6 +1365,9 @@ static void att_server_eatt_handler(uint8_t packet_type, uint16_t channel, uint8
case L2CAP_DATA_PACKET:
printf("L2CAP data cid 0x%02x len %u: ", channel, size);
printf_hexdump(packet, size);
// TODO: copy packet into request buffer
break;
case HCI_EVENT_PACKET:
@ -1385,7 +1390,7 @@ static void att_server_eatt_handler(uint8_t packet_type, uint16_t channel, uint8
break;
}
eatt_bearers[i]->con_handle = l2cap_event_ecbm_incoming_connection_get_handle(packet);
receive_buffers[i] = eatt_bearers[i]->reassemble_buffer;
receive_buffers[i] = eatt_bearers[i]->receive_buffer;
btstack_linked_list_add(&att_server_eatt_bearer_active, (btstack_linked_item_t *) eatt_bearers[i]);
}
num_accepted_bearers = i;
@ -1433,16 +1438,21 @@ uint8_t att_server_eatt_init(uint8_t num_eatt_bearers, uint8_t * storage_buffer,
memset(storage_buffer, 0, storage_size);
att_server_num_eatt_bearer = num_eatt_bearers;
uint16_t reassemble_buffer_size = (storage_size-size_for_structs) / num_eatt_bearers;
uint16_t bearer_buffer_size = ((storage_size - size_for_structs) / num_eatt_bearers);
att_server_eatt_receive_buffer_size = bearer_buffer_size / 2;
uint16_t request_buffer_size = bearer_buffer_size / 2;
uint16_t size_per_bearer = storage_size / num_eatt_bearers;
uint8_t * reassemble_buffer = &storage_buffer[size_for_structs];
uint8_t * bearer_buffer = &storage_buffer[size_for_structs];
uint8_t i;
att_server_eatt_bearer_t * eatt_bearer = (att_server_eatt_bearer_t *) storage_buffer;
log_info("%u EATT bearers with reassemble buffer of size %u ", num_eatt_bearers, reassemble_buffer_size);
log_info("%u EATT bearers with receive buffer size %u and request buffer size %u",
num_eatt_bearers, att_server_eatt_receive_buffer_size, request_buffer_size);
for (i=0;i<num_eatt_bearers;i++){
eatt_bearer->con_handle = HCI_CON_HANDLE_INVALID;
eatt_bearer->reassemble_buffer = reassemble_buffer;
reassemble_buffer += reassemble_buffer_size;
eatt_bearer->receive_buffer = bearer_buffer;
bearer_buffer += att_server_eatt_receive_buffer_size;
eatt_bearer->request_buffer = bearer_buffer;
bearer_buffer += request_buffer_size;
btstack_linked_list_add(&att_server_eatt_bearer_pool, (btstack_linked_item_t *) eatt_bearer);
eatt_bearer++;
}