recv_ack_n 127 net/nfc/llcp.h u8 recv_ack_n; recv_ack_n 671 net/nfc/llcp_core.c sock->recv_ack_n = (sock->recv_n - 1) % 16; recv_ack_n 972 net/nfc/llcp_sock.c llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;