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l2cap-ertm: emit L2CAP_EVENT_ERTM_BUFFER_RELEASED for remote without ERTM support only if ERTM was requested by client

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This commit is contained in:
Matthias Ringwald 2019-10-07 11:26:30 +02:00
parent bd539f2b3e
commit dae3b2ab07
1 changed files with 8 additions and 7 deletions
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15
src/l2cap.c
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@ -2902,11 +2902,11 @@ static void l2cap_signaling_handler_dispatch(hci_con_handle_t handle, uint8_t *
// outgoing connection
if (channel->state == L2CAP_STATE_WAIT_OUTGOING_EXTENDED_FEATURES){
// verify ERTM requirements
// if ERTM was requested, but is not listed in extended feature mask:
if ((channel->mode == L2CAP_CHANNEL_MODE_ENHANCED_RETRANSMISSION) && ((connection->l2cap_state.extended_feature_mask & 0x08) == 0)){
// bail if ERTM was requested but is not supported
if (channel->ertm_mandatory){
// channel closed
// bail if ERTM is mandatory
channel->state = L2CAP_STATE_CLOSED;
// map l2cap connection response result to BTstack status enumeration
l2cap_handle_channel_open_failed(channel, L2CAP_CONNECTION_RESPONSE_RESULT_ERTM_NOT_SUPPORTED);
@ -2914,11 +2914,12 @@ static void l2cap_signaling_handler_dispatch(hci_con_handle_t handle, uint8_t *
btstack_linked_list_remove(&l2cap_channels, (btstack_linked_item_t *) channel);
l2cap_free_channel_entry(channel);
continue;
} else {
// fallback to Basic mode
l2cap_emit_simple_event_with_cid(channel, L2CAP_EVENT_ERTM_BUFFER_RELEASED);
channel->mode = L2CAP_CHANNEL_MODE_BASIC;
}
} else {
// fallback to Basic mode
l2cap_emit_simple_event_with_cid(channel, L2CAP_EVENT_ERTM_BUFFER_RELEASED);
channel->mode = L2CAP_CHANNEL_MODE_BASIC;
}
// respond to connection request