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l2cap-ertm: track remote mps

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This commit is contained in:
Matthias Ringwald 2017-07-21 15:36:26 +02:00
parent 2bea1b8d8a
commit 3844aeadb3
1 changed files with 7 additions and 5 deletions
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12
src/l2cap.c
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@ -1900,12 +1900,13 @@ static void l2cap_signaling_handle_configure_request(l2cap_channel_t *channel, u
while (pos < end_pos){
uint8_t option_hint = command[pos] >> 7;
uint8_t option_type = command[pos] & 0x7f;
log_info("l2cap cid %u, hint %u, type %u", channel->local_cid, option_hint, option_type);
// log_info("l2cap cid %u, hint %u, type %u", channel->local_cid, option_hint, option_type);
pos++;
uint8_t length = command[pos++];
// MTU { type(8): 1, len(8):2, MTU(16) }
if (option_type == 1 && length == 2){
channel->remote_mtu = little_endian_read_16(command, pos);
log_info("Remote MTU %u", channel->remote_mtu);
if (channel->remote_mtu > l2cap_max_mtu()){
log_info("Remote MTU %u larger than outgoing buffer, only using MTU = %u", channel->remote_mtu, l2cap_max_mtu());
channel->remote_mtu = l2cap_max_mtu();
@ -1915,6 +1916,7 @@ static void l2cap_signaling_handle_configure_request(l2cap_channel_t *channel, u
// Flush timeout { type(8):2, len(8): 2, Flush Timeout(16)}
if (option_type == 2 && length == 2){
channel->flush_timeout = little_endian_read_16(command, pos);
log_info("Flush timeout: %u ms", channel->flush_timeout);
}
#ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE
@ -1928,13 +1930,13 @@ static void l2cap_signaling_handle_configure_request(l2cap_channel_t *channel, u
channel->remote_max_transmit = command[pos+2];
channel->remote_retransmission_timeout_ms = little_endian_read_16(command, pos + 3);
channel->remote_monitor_timeout_ms = little_endian_read_16(command, pos + 5);
log_info("FC&C config: tx window: %u, max transmit %u, retrans timeout %u, monitor timeout %u",
channel->remote_mps = little_endian_read_16(command, pos + 7);
log_info("FC&C config: tx window: %u, max transmit %u, retrans timeout %u, monitor timeout %u, mps %u",
channel->remote_tx_window_size,
channel->remote_max_transmit,
channel->remote_retransmission_timeout_ms,
channel->remote_monitor_timeout_ms);
// we store remote MPS in remote_mtu, might need to get re-evaluated
channel->remote_mtu = little_endian_read_16(command, pos + 7);
channel->remote_monitor_timeout_ms,
channel->remote_mps);
// If ERTM mandatory, but remote doens't offer ERTM -> disconnect
if (channel->ertm_mandatory && mode != L2CAP_CHANNEL_MODE_ENHANCED_RETRANSMISSION){
channel->state = L2CAP_STATE_WILL_SEND_DISCONNECT_REQUEST;