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l2cap: use table for fixed channels

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This commit is contained in:
Matthias Ringwald 2016-02-05 19:59:31 +01:00
parent b31d33b270
commit 5628cf69b5
1 changed files with 42 additions and 28 deletions
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70
src/l2cap.c
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@ -66,6 +66,12 @@
#define L2CAP_SIGNALING_COMMAND_LENGTH_OFFSET 2
#define L2CAP_SIGNALING_COMMAND_DATA_OFFSET 4
// internal table
#define L2CAP_FIXED_CHANNEL_TABLE_INDEX_ATTRIBUTE_PROTOCOL 0
#define L2CAP_FIXED_CHANNEL_TABLE_INDEX_SECURITY_MANAGER_PROTOCOL 1
#define L2CAP_FIXED_CHANNEL_TABLE_INDEX_CONNECTIONLESS_CHANNEL 2
#define L2CAP_FIXED_CHANNEL_TABLE_SIZE (L2CAP_FIXED_CHANNEL_TABLE_INDEX_CONNECTIONLESS_CHANNEL+1)
// prototypes
static void l2cap_finialize_channel_close(l2cap_channel_t *channel);
static inline l2cap_service_t * l2cap_get_service(uint16_t psm);
@ -77,6 +83,15 @@ static int l2cap_channel_ready_for_open(l2cap_channel_t *channel);
static void l2cap_hci_event_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
static void l2cap_acl_handler(uint8_t packet_type, uint8_t *packet, uint16_t size );
typedef struct l2cap_fixed_channel {
btstack_packet_handler_t callback;
// uint8_t waiting_for_can_send_now;
} l2cap_fixed_channel_t;
static btstack_linked_list_t l2cap_channels;
static btstack_linked_list_t l2cap_services;
static btstack_linked_list_t l2cap_le_channels;
static btstack_linked_list_t l2cap_le_services;
// used to cache l2cap rejects, echo, and informational requests
static l2cap_signaling_response_t signaling_responses[NR_PENDING_SIGNALING_RESPONSES];
@ -86,16 +101,25 @@ static uint8_t require_security_level2_for_outgoing_sdp;
static btstack_packet_callback_registration_t hci_event_callback_registration;
static btstack_linked_list_t l2cap_channels;
static btstack_linked_list_t l2cap_services;
static btstack_linked_list_t l2cap_le_channels;
static btstack_linked_list_t l2cap_le_services;
static btstack_packet_handler_t attribute_protocol_packet_handler;
static btstack_packet_handler_t security_protocol_packet_handler;
static btstack_packet_handler_t connectionless_channel_packet_handler;
static btstack_packet_handler_t l2cap_event_packet_handler;
static l2cap_fixed_channel_t fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_SIZE];
// static btstack_packet_handler_t fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_ATTRIBUTE_PROTOCOL];
// static btstack_packet_handler_t fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_SECURITY_MANAGER_PROTOCOL];
// static btstack_packet_handler_t fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_CONNECTIONLESS_CHANNEL];
static int l2cap_fixed_channel_table_index_for_channel_id(uint16_t channel_id){
switch (channel_id){
case L2CAP_CID_ATTRIBUTE_PROTOCOL:
return L2CAP_FIXED_CHANNEL_TABLE_INDEX_ATTRIBUTE_PROTOCOL;
case L2CAP_CID_SECURITY_MANAGER_PROTOCOL:
return L2CAP_FIXED_CHANNEL_TABLE_INDEX_SECURITY_MANAGER_PROTOCOL;
case L2CAP_CID_CONNECTIONLESS_CHANNEL:
return L2CAP_FIXED_CHANNEL_TABLE_INDEX_CONNECTIONLESS_CHANNEL;
default:
return -1;
}
}
void l2cap_init(void){
signaling_responses_pending = 0;
@ -106,9 +130,7 @@ void l2cap_init(void){
l2cap_le_channels = NULL;
l2cap_event_packet_handler = NULL;
attribute_protocol_packet_handler = NULL;
security_protocol_packet_handler = NULL;
connectionless_channel_packet_handler = NULL;
memset(fixed_channels, 0, sizeof(fixed_channels));
require_security_level2_for_outgoing_sdp = 0;
@ -1348,20 +1370,20 @@ static void l2cap_acl_handler(uint8_t packet_type, uint8_t *packet, uint16_t siz
}
case L2CAP_CID_ATTRIBUTE_PROTOCOL:
if (attribute_protocol_packet_handler) {
(*attribute_protocol_packet_handler)(ATT_DATA_PACKET, handle, &packet[COMPLETE_L2CAP_HEADER], size-COMPLETE_L2CAP_HEADER);
if (fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_ATTRIBUTE_PROTOCOL].callback) {
(*fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_ATTRIBUTE_PROTOCOL].callback)(ATT_DATA_PACKET, handle, &packet[COMPLETE_L2CAP_HEADER], size-COMPLETE_L2CAP_HEADER);
}
break;
case L2CAP_CID_SECURITY_MANAGER_PROTOCOL:
if (security_protocol_packet_handler) {
(*security_protocol_packet_handler)(SM_DATA_PACKET, handle, &packet[COMPLETE_L2CAP_HEADER], size-COMPLETE_L2CAP_HEADER);
if (fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_SECURITY_MANAGER_PROTOCOL].callback) {
(*fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_SECURITY_MANAGER_PROTOCOL].callback)(SM_DATA_PACKET, handle, &packet[COMPLETE_L2CAP_HEADER], size-COMPLETE_L2CAP_HEADER);
}
break;
case L2CAP_CID_CONNECTIONLESS_CHANNEL:
if (connectionless_channel_packet_handler) {
(*connectionless_channel_packet_handler)(UCD_DATA_PACKET, handle, &packet[COMPLETE_L2CAP_HEADER], size-COMPLETE_L2CAP_HEADER);
if (fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_CONNECTIONLESS_CHANNEL].callback) {
(*fixed_channels[L2CAP_FIXED_CHANNEL_TABLE_INDEX_CONNECTIONLESS_CHANNEL].callback)(UCD_DATA_PACKET, handle, &packet[COMPLETE_L2CAP_HEADER], size-COMPLETE_L2CAP_HEADER);
}
break;
@ -1520,17 +1542,9 @@ void l2cap_unregister_service(uint16_t psm){
// Bluetooth 4.0 - allows to register handler for Attribute Protocol and Security Manager Protocol
void l2cap_register_fixed_channel(btstack_packet_handler_t the_packet_handler, uint16_t channel_id) {
switch(channel_id){
case L2CAP_CID_ATTRIBUTE_PROTOCOL:
attribute_protocol_packet_handler = the_packet_handler;
break;
case L2CAP_CID_SECURITY_MANAGER_PROTOCOL:
security_protocol_packet_handler = the_packet_handler;
break;
case L2CAP_CID_CONNECTIONLESS_CHANNEL:
connectionless_channel_packet_handler = the_packet_handler;
break;
}
int index = l2cap_fixed_channel_table_index_for_channel_id(channel_id);
if (index < 0) return;
fixed_channels[index].callback = the_packet_handler;
}
#ifdef ENABLE_BLE