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L2CAP: validate packet size with remote MTU -> log_error

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This commit is contained in:
mila@ringwald.ch 2014-10-23 19:43:04 +00:00
parent aeb32d01e7
commit f0efaa575f
2 changed files with 6 additions and 0 deletions
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1
include/btstack/hci_cmds.h
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@ -473,6 +473,7 @@ extern "C" {
#define L2CAP_CONNECTION_RESPONSE_RESULT_RTX_TIMEOUT 0x68
#define L2CAP_SERVICE_ALREADY_REGISTERED 0x69
#define L2CAP_DATA_LEN_EXCEEDS_REMOTE_MTU 0x6A
#define RFCOMM_MULTIPLEXER_STOPPED 0x70
#define RFCOMM_CHANNEL_ALREADY_REGISTERED 0x71

5
src/l2cap.c
View File

@ -464,6 +464,11 @@ int l2cap_send_internal(uint16_t local_cid, uint8_t *data, uint16_t len){
return -1; // TODO: define error
}
if (len > channel->remote_mtu){
log_error("l2cap_send_internal cid 0x%02x, data length exceeds remote MTU.", local_cid);
return L2CAP_DATA_LEN_EXCEEDS_REMOTE_MTU;
}
if (!hci_can_send_acl_packet_now(channel->handle)){
log_info("l2cap_send_internal cid 0x%02x, cannot send", local_cid);
return BTSTACK_ACL_BUFFERS_FULL;