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use user specified MTU instead of 150

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matthias.ringwald 2010-08-10 19:29:16 +00:00
parent 7d592cf44a
commit fa2b26270d
2 changed files with 16 additions and 6 deletions
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18
src/l2cap.c
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@ -69,8 +69,6 @@ static linked_list_t l2cap_services = NULL;
static uint8_t * acl_buffer = NULL;
static void (*packet_handler) (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) = null_packet_handler;
static uint8_t config_options[] = { 1, 2, 150, 0}; // mtu = 48
void l2cap_init(){
sig_buffer = malloc( L2CAP_MINIMAL_MTU );
acl_buffer = malloc( HCI_ACL_3DH5_SIZE);
@ -245,6 +243,7 @@ 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
// flow control
chan->packets_granted = 0;
@ -444,6 +443,7 @@ static void l2cap_handle_connection_request(hci_con_handle_t handle, uint8_t sig
channel->packet_handler = service->packet_handler;
channel->local_cid = l2cap_next_local_cid();
channel->remote_cid = source_cid;
channel->local_mtu = service->mtu;
channel->remote_mtu = L2CAP_MINIMAL_MTU;
// set initial state
@ -472,6 +472,10 @@ void l2cap_accept_connection_internal(uint16_t local_cid){
// set real sig and state and start config
channel->sig_id = l2cap_next_sig_id();
channel->state = L2CAP_STATE_WAIT_CONFIG_REQ_RSP_OR_CONFIG_REQ;
uint8_t config_options[4];
config_options[0] = 1; // MTU
config_options[1] = 2; // len param
bt_store_16( (uint8_t*)&config_options, 2, channel->local_mtu);
l2cap_send_signaling_packet(channel->handle, CONFIGURE_REQUEST, channel->sig_id, channel->remote_cid, 0, 4, &config_options);
// log_dbg("new state %u\n", channel->state);
@ -513,10 +517,11 @@ void l2cap_signaling_handle_configure_request(l2cap_channel_t *channel, uint8_t
void l2cap_signaling_handler_channel(l2cap_channel_t *channel, uint8_t *command){
uint8_t code = command[L2CAP_SIGNALING_COMMAND_CODE_OFFSET];
uint8_t identifier = command[L2CAP_SIGNALING_COMMAND_SIGID_OFFSET];
uint8_t code = command[L2CAP_SIGNALING_COMMAND_CODE_OFFSET];
uint8_t identifier = command[L2CAP_SIGNALING_COMMAND_SIGID_OFFSET];
uint16_t result = 0;
uint8_t config_options[4];
// log_dbg("signaling handler code %u\n", code);
switch (channel->state) {
@ -530,6 +535,9 @@ void l2cap_signaling_handler_channel(l2cap_channel_t *channel, uint8_t *command)
// successful connection
channel->remote_cid = READ_BT_16(command, L2CAP_SIGNALING_COMMAND_DATA_OFFSET);
channel->sig_id = l2cap_next_sig_id();
config_options[0] = 1; // MTU
config_options[1] = 2; // len param
bt_store_16( (uint8_t*)&config_options, 2, channel->local_mtu);
l2cap_send_signaling_packet(channel->handle, CONFIGURE_REQUEST, channel->sig_id, channel->remote_cid, 0, 4, &config_options);
channel->state = L2CAP_STATE_WAIT_CONFIG_REQ_RSP_OR_CONFIG_REQ;
break;

4
src/l2cap.h
View File

@ -68,8 +68,11 @@ typedef struct {
hci_con_handle_t handle;
uint8_t sig_id; // other sig for conn requests
uint16_t local_cid;
uint16_t remote_cid;
uint16_t local_mtu;
uint16_t remote_mtu;
uint16_t psm;
@ -77,7 +80,6 @@ typedef struct {
uint8_t packets_granted; // number of L2CAP/ACL packets client is allowed to send
uint8_t packets_outgoing; // number of L2CAP/ACL packets send to BT module
// uint16_t local_mtu;
// uint16_t flush_timeout_incoming;
// uint16_t flush_timeout_outgoing;