struct sock change in kernel 2.6

Hello everyone! I am trying to implement a simple tcp server in the kernel. I read the ktcpvs's source code, but it works under kernel 2.4. The struct sock changed in kernel 2.6, I have two questions about the struct: 1. Is sk_wq field in 2.6 equals to sk_sleep field in 2.4? 2. How can I access the tcp accept queue in kernel 2.6? (In kernel 2.4, we could use tp_pinfo.af_tcp.accept_queue, but it was removed in 2.6) PS: Should sk_receive_queue in the struct sock be used as tp_pinfo.af_tcp.accept_queue? Thanks a lot!