mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-03-17 01:21:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

extracted rfcomm_channel_packet_handler

Browse Source
This commit is contained in:
matthias.ringwald 2011-07-06 11:09:43 +00:00
parent d7bd042c27
commit 48b8951948
1 changed files with 47 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

88
src/rfcomm.c
View File

@ -1199,45 +1199,12 @@ static void rfcomm_channel_state_machine(rfcomm_channel_t *channel, rfcomm_chann
}
}
void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
// multiplexer handler
int handled = 0;
switch (packet_type) {
case HCI_EVENT_PACKET:
handled = rfcomm_multiplexer_hci_event_handler(packet, size);
break;
case L2CAP_DATA_PACKET:
handled = rfcomm_multiplexer_l2cap_packet_handler(channel, packet, size);
break;
default:
break;
}
if (handled) return;
// we only handle l2cap packet over open multiplexer channel now
if (packet_type != L2CAP_DATA_PACKET) {
(*app_packet_handler)(NULL, packet_type, channel, packet, size);
return;
}
rfcomm_multiplexer_t * multiplexer = rfcomm_multiplexer_for_l2cap_cid(channel);
if (!multiplexer || multiplexer->state != RFCOMM_MULTIPLEXER_OPEN) {
(*app_packet_handler)(NULL, packet_type, channel, packet, size);
return;
}
void rfcomm_channel_packet_handler(rfcomm_multiplexer_t * multiplexer, uint8_t *packet, uint16_t size){
// rfcomm: (0) addr [76543 server channel] [2 direction: initiator uses 1] [1 C/R: CMD by initiator = 1] [0 EA=1]
const uint8_t frame_dlci = packet[0] >> 2;
uint8_t message_dlci; // used by commands in UIH(_PF) packets
uint8_t message_len; // "
// channel data
if (frame_dlci && (packet[1] == BT_RFCOMM_UIH || packet[1] == BT_RFCOMM_UIH_PF)) {
rfcomm_channel_packet_handler_uih(multiplexer, packet, size);
return;
}
// rfcomm: (1) command/control
// -- credits_offset = 1 if command == BT_RFCOMM_UIH_PF
@ -1251,15 +1218,15 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
rfcomm_channel_t * rfChannel = NULL;
rfcomm_service_t * rfService = NULL;
rfcomm_channel_event_t event;
// switch by rfcomm message type
switch(packet[1]) {
case BT_RFCOMM_SABM:
rfService = rfcomm_service_for_channel(frame_dlci >> 1);
if (rfService) {
log_dbg("Received SABM #%u\n", frame_dlci);
log_dbg("Received SABM #%u\n", frame_dlci);
// get or create channel
rfChannel = rfcomm_channel_for_multiplexer_and_dlci(multiplexer, frame_dlci);
if (!rfChannel) {
@ -1352,10 +1319,10 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
event_pn.priority = packet[payload_offset+4];
event_pn.max_frame_size = READ_BT_16(packet, payload_offset+6);
event_pn.credits_outgoing = packet[payload_offset+9];
log_dbg("UIH Parameter Negotiation Response max frame %u, credits %u\n",
event_pn.max_frame_size, event_pn.credits_outgoing);
rfcomm_channel_state_machine(rfChannel, (rfcomm_channel_event_t *) &event_pn);
break;
@ -1368,7 +1335,7 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
event.type = CH_EVT_RCVD_MSC_CMD;
rfcomm_channel_state_machine(rfChannel, &event);
break;
case BT_RFCOMM_MSC_RSP:
message_dlci = packet[payload_offset+2] >> 2;
log_dbg("Received MSC RSP for #%u\n", message_dlci);
@ -1417,7 +1384,7 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
break;
}
break;
default:
break;
}
@ -1429,6 +1396,45 @@ void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
}
}
void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
// multiplexer handler
int handled = 0;
switch (packet_type) {
case HCI_EVENT_PACKET:
handled = rfcomm_multiplexer_hci_event_handler(packet, size);
break;
case L2CAP_DATA_PACKET:
handled = rfcomm_multiplexer_l2cap_packet_handler(channel, packet, size);
break;
default:
break;
}
if (handled) return;
// we only handle l2cap packet over open multiplexer channel now
if (packet_type != L2CAP_DATA_PACKET) {
(*app_packet_handler)(NULL, packet_type, channel, packet, size);
return;
}
rfcomm_multiplexer_t * multiplexer = rfcomm_multiplexer_for_l2cap_cid(channel);
if (!multiplexer || multiplexer->state != RFCOMM_MULTIPLEXER_OPEN) {
(*app_packet_handler)(NULL, packet_type, channel, packet, size);
return;
}
// channel data ?
// rfcomm: (0) addr [76543 server channel] [2 direction: initiator uses 1] [1 C/R: CMD by initiator = 1] [0 EA=1]
const uint8_t frame_dlci = packet[0] >> 2;
if (frame_dlci && (packet[1] == BT_RFCOMM_UIH || packet[1] == BT_RFCOMM_UIH_PF)) {
rfcomm_channel_packet_handler_uih(multiplexer, packet, size);
return;
}
rfcomm_channel_packet_handler(multiplexer, packet, size);
}
//
void rfcomm_close_connection(void *connection){
linked_item_t *it;