ss7 protocol stack

Before we introduce the TCP send function, we need to introduce a very important structure sk_buff, in Linux, the Sk_buff structure represents a message:Then see the Send function source code, here is not concerned about the decentralized-aggregation of hardware support:/* SENDMSG system call implementation in TCP layer */int tcp_sendmsg (struct KIOCB *iocb, struct sock *sk, struct MSGHDR *msg,size_t size) {struct IOVEC *iov;struct Tcp_sock *TP = Tcp_sk (SK); struct Sk_buff *skb;/* a message */i

In the process of Bluetooth enable, multiple threads are created and the threads are bound to the queue. This article mainly analyzes the processing of HCI data this thread.voidBtu_startup (void){. .. btu_bta_msg_queue=fixed_queue_new (Size_max);Btu_general_alarm_hash_map=hash_map_new (btu_general_alarm_hash_map_size, Hash_function_pointer, NULL, (DATA_FREE_FN) alarm_free, NULL) ;Btu_general_alarm_queue=fixed_queue_new (Size_max);Btu_oneshot_alarm_hash_map=hash_map_new (btu_oneshot_alarm_hash_ma

TI ble protocol stack comes with data encryption and decryption function, there are two functions, respectively, are encrypted and decrypted, each function is three parameters, are 16 bytes, if the actual data less than 16 bytes, after the completion of their own, after the encryption via Bluetooth, the other device received this data, inverse, get 16 bytes of data, Take the number of bytes you need (if cha