C++ (Cpp) G_TCPOPT_WSCALE_OK 예제들

예제 #1

파일: t4_cpl_io.c 프로젝트: ornarium/freebsd

/*
 * Called when a connection is established to translate the TCP options
 * reported by HW to FreeBSD's native format.
 */
static void
assign_rxopt(struct tcpcb *tp, unsigned int opt)
{
	struct toepcb *toep = tp->t_toe;
	struct adapter *sc = td_adapter(toep->td);

	INP_LOCK_ASSERT(tp->t_inpcb);

	tp->t_maxseg = tp->t_maxopd = sc->params.mtus[G_TCPOPT_MSS(opt)] - 40;

	if (G_TCPOPT_TSTAMP(opt)) {
		tp->t_flags |= TF_RCVD_TSTMP;	/* timestamps ok */
		tp->ts_recent = 0;		/* hmmm */
		tp->ts_recent_age = tcp_ts_getticks();
		tp->t_maxseg -= TCPOLEN_TSTAMP_APPA;
	}

	if (G_TCPOPT_SACK(opt))
		tp->t_flags |= TF_SACK_PERMIT;	/* should already be set */
	else
		tp->t_flags &= ~TF_SACK_PERMIT;	/* sack disallowed by peer */

	if (G_TCPOPT_WSCALE_OK(opt))
		tp->t_flags |= TF_RCVD_SCALE;

	/* Doing window scaling? */
	if ((tp->t_flags & (TF_RCVD_SCALE | TF_REQ_SCALE)) ==
	    (TF_RCVD_SCALE | TF_REQ_SCALE)) {
		tp->rcv_scale = tp->request_r_scale;
		tp->snd_scale = G_TCPOPT_SND_WSCALE(opt);
	}
}

예제 #2

파일: t4_cpl_io.c 프로젝트: outbackdingo/uBSD

/*
 * Called when a connection is established to translate the TCP options
 * reported by HW to FreeBSD's native format.
 */
static void
assign_rxopt(struct tcpcb *tp, unsigned int opt)
{
	struct toepcb *toep = tp->t_toe;
	struct inpcb *inp = tp->t_inpcb;
	struct adapter *sc = td_adapter(toep->td);
	int n;

	INP_LOCK_ASSERT(inp);

	if (inp->inp_inc.inc_flags & INC_ISIPV6)
		n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr);
	else
		n = sizeof(struct ip) + sizeof(struct tcphdr);
	tp->t_maxseg = sc->params.mtus[G_TCPOPT_MSS(opt)] - n;

	CTR4(KTR_CXGBE, "%s: tid %d, mtu_idx %u (%u)", __func__, toep->tid,
	    G_TCPOPT_MSS(opt), sc->params.mtus[G_TCPOPT_MSS(opt)]);

	if (G_TCPOPT_TSTAMP(opt)) {
		tp->t_flags |= TF_RCVD_TSTMP;	/* timestamps ok */
		tp->ts_recent = 0;		/* hmmm */
		tp->ts_recent_age = tcp_ts_getsbintime();
		tp->t_maxseg -= TCPOLEN_TSTAMP_APPA;
	}

	if (G_TCPOPT_SACK(opt))
		tp->t_flags |= TF_SACK_PERMIT;	/* should already be set */
	else
		tp->t_flags &= ~TF_SACK_PERMIT;	/* sack disallowed by peer */

	if (G_TCPOPT_WSCALE_OK(opt))
		tp->t_flags |= TF_RCVD_SCALE;

	/* Doing window scaling? */
	if ((tp->t_flags & (TF_RCVD_SCALE | TF_REQ_SCALE)) ==
	    (TF_RCVD_SCALE | TF_REQ_SCALE)) {
		tp->rcv_scale = tp->request_r_scale;
		tp->snd_scale = G_TCPOPT_SND_WSCALE(opt);
	}
}