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document hci_read_buffer_size result, better docuement l2cap mtu handling

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matthias.ringwald 2011-06-12 07:46:50 +00:00
parent c68bdf905b
commit 1d279b2064
2 changed files with 6 additions and 7 deletions
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1
src/hci.c
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@ -351,6 +351,7 @@ static void event_handler(uint8_t *packet, int size){
if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){ if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){
// from offset 5 // from offset 5
// status // status
// "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets"
hci_stack.acl_data_packet_length = READ_BT_16(packet, 6); hci_stack.acl_data_packet_length = READ_BT_16(packet, 6);
// ignore: SCO data packet len (8) // ignore: SCO data packet len (8)
hci_stack.total_num_acl_packets = packet[9]; hci_stack.total_num_acl_packets = packet[9];

12
src/l2cap.c
View File

@ -240,11 +240,11 @@ void l2cap_create_channel_internal(void * connection, btstack_packet_handler_t p
// TODO: emit error event // TODO: emit error event
if (!chan) return; if (!chan) return;
// validate mtu // limit local mtu to max acl packet length
if (hci_max_acl_data_packet_length() < mtu) { if (mtu > hci_max_acl_data_packet_length()) {
mtu = hci_max_acl_data_packet_length(); mtu = hci_max_acl_data_packet_length();
} }
// fill in // fill in
BD_ADDR_COPY(chan->address, address); BD_ADDR_COPY(chan->address, address);
chan->psm = psm; chan->psm = psm;
@ -461,8 +461,8 @@ static void l2cap_handle_connection_request(hci_con_handle_t handle, uint8_t sig
channel->local_mtu = service->mtu; channel->local_mtu = service->mtu;
channel->remote_mtu = L2CAP_DEFAULT_MTU; channel->remote_mtu = L2CAP_DEFAULT_MTU;
// validate mtu // limit local mtu to max acl packet length
if (hci_max_acl_data_packet_length() < channel->local_mtu) { if (channel->local_mtu > hci_max_acl_data_packet_length()) {
channel->local_mtu = hci_max_acl_data_packet_length(); channel->local_mtu = hci_max_acl_data_packet_length();
} }
@ -529,8 +529,6 @@ void l2cap_signaling_handle_configure_request(l2cap_channel_t *channel, uint8_t
pos += length; pos += length;
} }
uint8_t identifier = command[L2CAP_SIGNALING_COMMAND_SIGID_OFFSET]; uint8_t identifier = command[L2CAP_SIGNALING_COMMAND_SIGID_OFFSET];
// send back received options
// l2cap_send_signaling_packet(channel->handle, CONFIGURE_RESPONSE, identifier, channel->remote_cid, 0, 0, len-4, &command[8]);
// send back OK // send back OK
l2cap_send_signaling_packet(channel->handle, CONFIGURE_RESPONSE, identifier, channel->remote_cid, 0, 0, 0, NULL); l2cap_send_signaling_packet(channel->handle, CONFIGURE_RESPONSE, identifier, channel->remote_cid, 0, 0, 0, NULL);
} }