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add remote_mtu to l2cap_channel_t, extract l2cap_signaling_handle_configure_request

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This commit is contained in:
matthias.ringwald 2010-06-18 20:00:05 +00:00
parent 48d5281e6e
commit 2784b77d47
2 changed files with 24 additions and 11 deletions
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24
src/l2cap.c
View File

@ -49,6 +49,9 @@
// size of HCI ACL + L2CAP Header for regular data packets
#define COMPLETE_L2CAP_HEADER 8
// minimum signaling MTU
#define L2CAP_MINIMAL_MTU 48
// offsets for L2CAP SIGNALING COMMANDS
#define L2CAP_SIGNALING_COMMAND_CODE_OFFSET 0
#define L2CAP_SIGNALING_COMMAND_SIGID_OFFSET 1
@ -69,8 +72,9 @@ static connection_t * capture_connection = NULL;
static uint8_t config_options[] = { 1, 2, 150, 0}; // mtu = 48
void l2cap_init(){
sig_buffer = malloc( 48 );
acl_buffer = malloc( 255 + 8 );
sig_buffer = malloc( L2CAP_MINIMAL_MTU );
// acl_buffer = malloc( 255 + 8 );
acl_buffer = malloc( 400 + 8 );
//
// register callbacks with HCI
@ -201,6 +205,7 @@ void l2cap_create_channel_internal(connection_t * connection, bd_addr_t address,
chan->handle = 0;
chan->connection = connection;
chan->packet_handler = NULL;
chan->remote_mtu = L2CAP_MINIMAL_MTU;
// set initial state
chan->state = L2CAP_STATE_CLOSED;
@ -362,6 +367,7 @@ 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->remote_mtu = L2CAP_MINIMAL_MTU;
// set initial state
channel->state = L2CAP_STATE_WAIT_CLIENT_ACCEPT_OR_REJECT;
@ -407,11 +413,17 @@ void l2cap_decline_connection_internal(uint16_t local_cid, uint8_t reason){
free (channel);
}
void l2cap_signaling_handle_configure_request(l2cap_channel_t *channel, uint8_t *command){
// accept the other's configuration options
uint16_t len = READ_BT_16(command, L2CAP_SIGNALING_COMMAND_LENGTH_OFFSET);
uint8_t identifier = command[L2CAP_SIGNALING_COMMAND_SIGID_OFFSET];
l2cap_send_signaling_packet(channel->handle, CONFIGURE_RESPONSE, identifier, channel->remote_cid, 0, 0, len-4, &command[8]);
}
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];
uint16_t len = READ_BT_16(command, L2CAP_SIGNALING_COMMAND_LENGTH_OFFSET);
uint16_t result = 0;
// printf("signaling handler code %u\n", code);
@ -456,8 +468,7 @@ void l2cap_signaling_handler_channel(l2cap_channel_t *channel, uint8_t *command)
channel->state = L2CAP_STATE_WAIT_CONFIG_REQ;
break;
case CONFIGURE_REQUEST:
// accept the other's configuration options
l2cap_send_signaling_packet(channel->handle, CONFIGURE_RESPONSE, identifier, channel->remote_cid, 0, 0, len-4, &command[8]);
l2cap_signaling_handle_configure_request(channel, command);
channel->state = L2CAP_STATE_WAIT_CONFIG_REQ_RSP;
break;
case DISCONNECTION_REQUEST:
@ -472,8 +483,7 @@ void l2cap_signaling_handler_channel(l2cap_channel_t *channel, uint8_t *command)
case L2CAP_STATE_WAIT_CONFIG_REQ:
switch (code) {
case CONFIGURE_REQUEST:
// accept the other's configuration options
l2cap_send_signaling_packet(channel->handle, CONFIGURE_RESPONSE, identifier, channel->remote_cid, 0, 0, len-4, &command[8]);
l2cap_signaling_handle_configure_request(channel, command);
channel->state = L2CAP_STATE_OPEN;
l2cap_emit_channel_opened(channel, 0); // success
break;

11
src/l2cap.h
View File

@ -64,15 +64,18 @@ typedef struct {
linked_item_t item;
L2CAP_STATE state;
bd_addr_t address;
hci_con_handle_t handle;
uint8_t sig_id; // other sig for conn requests
uint16_t local_cid;
uint16_t remote_cid;
bd_addr_t address;
uint16_t remote_mtu;
uint16_t psm;
hci_con_handle_t handle;
// uint16_t mtu_incoming;
// uint16_t mtu_outgoing;
// uint16_t local_mtu;
// uint16_t flush_timeout_incoming;
// uint16_t flush_timeout_outgoing;