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l2cap: check can send now before sending extended information request needed for ERTM mode

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This commit is contained in:
Matthias Ringwald 2018-09-25 15:45:35 +02:00
parent 14cca92bcb
commit 93d791b29f
2 changed files with 3 additions and 1 deletions
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2
CHANGELOG.md
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@ -12,7 +12,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
### Fixed
- HCI/L2CAP: Error creating outgoing connection (e.g. Connection Limit Exceeded) now handled
- RFCOMM: Trigger l2cap request to send on rfcomm credits when client is waiting to sendtrigger l2cap request to send on rfcomm credits when client is waiting to send
- RFCOMM: Avoid use-after-free on channel finalize
- L2CAP: Evaluate 'can send now' on HCI Disconnect as ACL buffers in Bluetooth Controller have been used for the closed connection are freed implicitly
- L2CAP: Check can send now before sending extended information requeste needed for ERTM mode
- GATT Client: stop timer on disconnect - fixes use after free / crash
- L2CAP: Use valid signaling identifier for L2CAP Connection Parameter Update Request

2
src/l2cap.c
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@ -1371,8 +1371,8 @@ static void l2cap_run(void){
while(btstack_linked_list_iterator_has_next(&it)){
hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
if (connection->l2cap_state.information_state == L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST){
if (!hci_can_send_acl_packet_now(connection->con_handle)) break;
connection->l2cap_state.information_state = L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE;
// send information request for extended features
uint8_t sig_id = l2cap_next_sig_id();
uint8_t info_type = L2CAP_INFO_TYPE_EXTENDED_FEATURES_SUPPORTED;
l2cap_send_signaling_packet(connection->con_handle, INFORMATION_REQUEST, sig_id, info_type);