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allow specify MTU for outgoing l2cap connections (was 150 before)

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This commit is contained in:
matthias.ringwald 2010-08-10 20:43:55 +00:00
parent fa2b26270d
commit 15470d2718
6 changed files with 19 additions and 5 deletions

1
include/btstack/hci_cmds.h

@ -238,6 +238,7 @@ extern const hci_cmd_t hci_write_simple_pairing_mode;
extern const hci_cmd_t l2cap_accept_connection;
extern const hci_cmd_t l2cap_create_channel;
extern const hci_cmd_t l2cap_create_channel_mtu;
extern const hci_cmd_t l2cap_decline_connection;
extern const hci_cmd_t l2cap_disconnect;
extern const hci_cmd_t l2cap_register_service;

8
src/daemon.c

@ -132,10 +132,16 @@ static int btstack_command_handler(connection_t *connection, uint8_t *packet, ui
hci_emit_system_bluetooth_enabled(0);
break;
#endif
case L2CAP_CREATE_CHANNEL_MTU:
bt_flip_addr(addr, &packet[3]);
psm = READ_BT_16(packet, 9);
mtu = READ_BT_16(packet, 11);
l2cap_create_channel_internal( connection, NULL, addr, psm, mtu);
break;
case L2CAP_CREATE_CHANNEL:
bt_flip_addr(addr, &packet[3]);
psm = READ_BT_16(packet, 9);
l2cap_create_channel_internal( connection, NULL, addr, psm );
l2cap_create_channel_internal( connection, NULL, addr, psm, 150); // until r865
break;
case L2CAP_DISCONNECT:
cid = READ_BT_16(packet, 3);

3
src/hci.h

@ -102,6 +102,9 @@
// decline l2cap disconnect,@param bd_addr(48), dest cid (16), reason(8)
#define L2CAP_DECLINE_CONNECTION 0x25
// create l2cap channel: @param bd_addr(48), psm (16), mtu (16)
#define L2CAP_CREATE_CHANNEL_MTU 0x26
// register SDP Service Record: service record (size)
#define SDP_REGISTER_SERVICE_RECORD 0x30

5
src/hci_cmds.c

@ -346,7 +346,10 @@ const hci_cmd_t l2cap_create_channel = {
OPCODE(OGF_BTSTACK, L2CAP_CREATE_CHANNEL), "B2"
// @param bd_addr(48), psm (16)
};
const hci_cmd_t l2cap_create_channel_mtu = {
OPCODE(OGF_BTSTACK, L2CAP_CREATE_CHANNEL), "B22"
// @param bd_addr(48), psm (16), mtu (16)
};
const hci_cmd_t l2cap_disconnect = {
OPCODE(OGF_BTSTACK, L2CAP_DISCONNECT), "21"
// @param channel(16), reason(8)

5
src/l2cap.c

@ -229,7 +229,8 @@ int l2cap_send_internal(uint16_t local_cid, uint8_t *data, uint16_t len){
}
// open outgoing L2CAP channel
void l2cap_create_channel_internal(void * connection, btstack_packet_handler_t packet_handler, bd_addr_t address, uint16_t psm){
void l2cap_create_channel_internal(void * connection, btstack_packet_handler_t packet_handler,
bd_addr_t address, uint16_t psm, uint16_t mtu){
// alloc structure
l2cap_channel_t * chan = malloc(sizeof(l2cap_channel_t));
@ -243,7 +244,7 @@ void l2cap_create_channel_internal(void * connection, btstack_packet_handler_t p
chan->connection = connection;
chan->packet_handler = packet_handler;
chan->remote_mtu = L2CAP_MINIMAL_MTU;
chan->local_mtu = 150; // TODO allow to specify this
chan->local_mtu = mtu;
// flow control
chan->packets_granted = 0;

2
src/l2cap.h

@ -112,7 +112,7 @@ typedef struct {
void l2cap_init();
void l2cap_register_packet_handler(void (*handler)(void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size));
void l2cap_create_channel_internal(void * connection, btstack_packet_handler_t packet_handler, bd_addr_t address, uint16_t psm);
void l2cap_create_channel_internal(void * connection, btstack_packet_handler_t packet_handler, bd_addr_t address, uint16_t psm, uint16_t mtu);
void l2cap_disconnect_internal(uint16_t local_cid, uint8_t reason);
int l2cap_send_internal(uint16_t local_cid, uint8_t *data, uint16_t len);
uint16_t l2cap_get_remote_mtu_for_local_cid(uint16_t local_cid);