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 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
