On Wed, 2015-11-18 at 10:52 +0900, Lorenzo Colitti wrote:
>
> +static int kill_inet_sock(const struct sockaddr_nl *addr,
> + struct nlmsghdr *h, void *arg)
> +{
> + struct rtnl_handle rth;
> + if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
> + return -1;
> +
> + struct inet_diag_arg *diag_arg = arg;
> + struct inet_diag_msg *d = NLMSG_DATA(h);
> + DIAG_REQUEST(req, struct inet_diag_req_v2 r);
> + req.nlh.nlmsg_type = SOCK_DESTROY;
> + req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
> + req.r.sdiag_family = d->idiag_family;
> + req.r.sdiag_protocol = diag_arg->protocol;
> + req.r.id = d->id;
> +
> + int err = rtnl_talk(&rth, &req.nlh, NULL, 0);
> + rtnl_close(&rth);
> + return err;
> +}
1) Please do not mix variables and code.
2) opening/closing a control socket for every killed TCP socket is going
to consume a lot of cpu cycles.
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