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l2cap: split l2cap_run into sub statemachines

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This commit is contained in:
Matthias Ringwald 2020-04-09 09:57:49 +02:00
parent 67c6c9dce6
commit ea6a43fa4b
1 changed files with 52 additions and 29 deletions
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81
src/l2cap.c
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@ -50,6 +50,7 @@
#include "hci_dump.h"
#include "bluetooth_sdp.h"
#include "bluetooth_psm.h"
#include "btstack_bool.h"
#include "btstack_debug.h"
#include "btstack_event.h"
#include "btstack_memory.h"
@ -1640,17 +1641,13 @@ static void l2cap_run_for_classic_channel(l2cap_channel_t * channel){
}
#endif
// MARK: L2CAP_RUN
// process outstanding signaling tasks
static void l2cap_run(void){
// log_info("l2cap_run: entered");
static void l2cap_run_signaling_response() {
// check pending signaling responses
while (signaling_responses_pending){
hci_con_handle_t handle = signaling_responses[0].handle;
if (!hci_can_send_acl_packet_now(handle)) break;
uint8_t sig_id = signaling_responses[0].sig_id;
@ -1704,7 +1701,7 @@ static void l2cap_run(void){
default:
// all other types are not supported
l2cap_send_signaling_packet(handle, INFORMATION_RESPONSE, sig_id, info_type, 1, 0, NULL);
break;
break;
}
break;
case COMMAND_REJECT:
@ -1724,13 +1721,12 @@ static void l2cap_run(void){
break;
}
}
#if defined(ENABLE_CLASSIC) || defined(ENABLE_BLE)
btstack_linked_list_iterator_t it;
#endif
}
#ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE
static bool l2ap_run_ertm(void){
// send l2cap information request if neccessary
btstack_linked_list_iterator_t it;
hci_connections_get_iterator(&it);
while(btstack_linked_list_iterator_has_next(&it)){
hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it);
@ -1740,25 +1736,16 @@ static void l2cap_run(void){
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);
return;
return true;
}
}
#endif
#ifdef ENABLE_CLASSIC
btstack_linked_list_iterator_init(&it, &l2cap_channels);
while (btstack_linked_list_iterator_has_next(&it)){
l2cap_channel_t * channel = (l2cap_channel_t *) btstack_linked_list_iterator_next(&it);
if (channel->channel_type != L2CAP_CHANNEL_TYPE_CLASSIC) continue;
// log_info("l2cap_run: channel %p, state %u, var 0x%02x", channel, channel->state, channel->state_var);
l2cap_run_for_classic_channel(channel);
}
return false;
}
#endif
#ifdef ENABLE_LE_DATA_CHANNELS
static void l2cap_run_le_data_channels(void){
btstack_linked_list_iterator_t it;
btstack_linked_list_iterator_init(&it, &l2cap_channels);
while (btstack_linked_list_iterator_has_next(&it)){
uint16_t mps;
@ -1788,7 +1775,7 @@ static void l2cap_run(void){
l2cap_send_le_signaling_packet(channel->con_handle, LE_CREDIT_BASED_CONNECTION_RESPONSE, channel->remote_sig_id, channel->local_cid, channel->local_mtu, mps, channel->credits_incoming, 0);
// notify client
l2cap_emit_le_channel_opened(channel, 0);
break;
break;
case L2CAP_STATE_WILL_SEND_LE_CONNECTION_RESPONSE_DECLINE:
if (!hci_can_send_acl_packet_now(channel->con_handle)) break;
channel->state = L2CAP_STATE_INVALID;
@ -1815,20 +1802,56 @@ static void l2cap_run(void){
if (!hci_can_send_acl_packet_now(channel->con_handle)) break;
channel->local_sig_id = l2cap_next_sig_id();
channel->state = L2CAP_STATE_WAIT_DISCONNECT;
l2cap_send_le_signaling_packet( channel->con_handle, DISCONNECTION_REQUEST, channel->local_sig_id, channel->remote_cid, channel->local_cid);
l2cap_send_le_signaling_packet( channel->con_handle, DISCONNECTION_REQUEST, channel->local_sig_id, channel->remote_cid, channel->local_cid);
break;
case L2CAP_STATE_WILL_SEND_DISCONNECT_RESPONSE:
if (!hci_can_send_acl_packet_now(channel->con_handle)) break;
channel->state = L2CAP_STATE_INVALID;
l2cap_send_le_signaling_packet( channel->con_handle, DISCONNECTION_RESPONSE, channel->remote_sig_id, channel->local_cid, channel->remote_cid);
l2cap_send_le_signaling_packet( channel->con_handle, DISCONNECTION_RESPONSE, channel->remote_sig_id, channel->local_cid, channel->remote_cid);
l2cap_le_finialize_channel_close(channel); // -- remove from list
break;
default:
break;
}
}
}
#endif
// MARK: L2CAP_RUN
// process outstanding signaling tasks
static void l2cap_run(void){
// log_info("l2cap_run: entered");
l2cap_run_signaling_response();
bool done;
#ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE
done = l2ap_run_ertm();
if (done) return;
#endif
#if defined(ENABLE_CLASSIC) || defined(ENABLE_BLE)
btstack_linked_list_iterator_t it;
#endif
#ifdef ENABLE_CLASSIC
btstack_linked_list_iterator_init(&it, &l2cap_channels);
while (btstack_linked_list_iterator_has_next(&it)){
l2cap_channel_t * channel = (l2cap_channel_t *) btstack_linked_list_iterator_next(&it);
if (channel->channel_type != L2CAP_CHANNEL_TYPE_CLASSIC) continue;
// log_info("l2cap_run: channel %p, state %u, var 0x%02x", channel, channel->state, channel->state_var);
l2cap_run_for_classic_channel(channel);
}
#endif
#ifdef ENABLE_LE_DATA_CHANNELS
l2cap_run_le_data_channels();
#endif
#ifdef ENABLE_BLE
// send l2cap con paramter update if necessary
hci_connections_get_iterator(&it);