Hi Dronen,
Thanks for ur reply. I am using kernel-2.2.15, but there is no
such sock_put function. All the other functions r there. Can you give some
idea for 2.2.x type of kernel?
Regards,
Saibal
>
> This code is from 2.4.0-test13-pre4.
>
> See, for example, the call to sock_put() (which calls sk_free())
> at the bottom of net/ipv4/tcp.c:tcp_close(). tcp_close() takes
> a struct sock as an argument and, when all is said and done, it
> frees it.
>
> bh_unlock_sock(sk);
> local_bh_enable();
> sock_put(sk);
>
> tcp_close() is a member of struct proto tcp_prot, which is
> defined in net/ipv4/tcp_ipv4.c. tcp_prot is assigned to
> sk->prot in net/ipv4/af_inet.c:inet_create().
>
> sk->prot = prot;
>
> net/af_inet.c:inet_release() calls the close function
> of the struct sock's struct proto (sk->prot):
>
> sk->prot->close(sk, timeout);
>
> To wrap things up (for an AF_INET, SOCK_STREAM socket), the above
> line calls tcp_close(), which calls sock_put(sk), which calls
> sk_free().
>
> Hope this helps.
>
> Regards,
>
> Nick Dronen
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