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allow to limit ATT Server request buffer and SDP response buffer

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This commit is contained in:
Matthias Ringwald 2015-12-17 16:20:33 +01:00
parent 2f65c2d7f4
commit 5ffbed6012
2 changed files with 12 additions and 2 deletions
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10
ble/att_server.c
View File

@ -66,6 +66,11 @@
static void att_run(void);
// max ATT request matches L2CAP PDU -- allow to use smaller buffer
#ifndef ATT_REQUEST_BUFFER_SIZE
#define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE
#endif
typedef enum {
ATT_SERVER_IDLE,
ATT_SERVER_REQUEST_RECEIVED,
@ -79,7 +84,7 @@ static att_server_state_t att_server_state;
static uint8_t att_client_addr_type;
static bd_addr_t att_client_address;
static uint16_t att_request_size = 0;
static uint8_t att_request_buffer[HCI_ACL_PAYLOAD_SIZE];
static uint8_t att_request_buffer[ATT_REQUEST_BUFFER_SIZE];
static int att_ir_le_device_db_index = -1;
static int att_ir_lookup_active = 0;
@ -146,6 +151,9 @@ static void att_event_packet_handler (uint8_t packet_type, uint16_t channel, uin
att_connection.con_handle = READ_BT_16(packet, 4);
att_connection.mtu = ATT_DEFAULT_MTU;
att_connection.max_mtu = l2cap_max_le_mtu();
if (att_connection.max_mtu > ATT_REQUEST_BUFFER_SIZE){
att_connection.max_mtu = ATT_REQUEST_BUFFER_SIZE;
}
att_connection.encryption_key_size = 0;
att_connection.authenticated = 0;
att_connection.authorized = 0;

4
src/sdp.c
View File

@ -54,8 +54,10 @@
// max reserved ServiceRecordHandle
#define maxReservedServiceRecordHandle 0xffff
// max SDP response
// max SDP response matches L2CAP PDU -- allow to use smaller buffer
#ifndef SDP_RESPONSE_BUFFER_SIZE
#define SDP_RESPONSE_BUFFER_SIZE (HCI_ACL_BUFFER_SIZE-HCI_ACL_HEADER_SIZE)
#endif
static void sdp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
uint32_t sdp_get_service_record_handle(uint8_t * record);