/*---------------------------------------------------------------------------*
* Q.921 timer T200 timeout function
*---------------------------------------------------------------------------*/
static void
i4b_T200_timeout(l2_softc_t *l2sc)
{
NDBGL2(L2_T_ERR, "bri %d, RC = %d", l2sc->drv->bri, l2sc->RC);
i4b_next_l2state(l2sc, l2sc->drv, EV_T200EXP);
}
/*---------------------------------------------------------------------------*
* process a received U-frame
*---------------------------------------------------------------------------*/
void
i4b_rxd_u_frame(int unit, struct mbuf *m)
{
l2_softc_t *l2sc = &l2_softc[unit];
u_char *ptr = m->m_data;
int sapi = GETSAPI(*(ptr + OFF_SAPI));
int tei = GETTEI(*(ptr + OFF_TEI));
int pfbit = GETUPF(*(ptr + OFF_CNTL));
switch(*(ptr + OFF_CNTL) & ~UPFBIT)
{
/* commands */
case SABME:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
l2sc->stat.rx_sabme++;
NDBGL2(L2_U_MSG, "SABME, sapi = %d, tei = %d", sapi, tei);
l2sc->rxd_PF = pfbit;
i4b_next_l2state(l2sc, EV_RXSABME);
}
i4b_Dfreembuf(m);
break;
case UI:
if(sapi == SAPI_L2M &&
tei == GROUP_TEI &&
*(ptr + OFF_MEI) == MEI)
{
/* layer 2 management (SAPI = 63) */
l2sc->stat.rx_tei++;
i4b_tei_rxframe(unit, m);
}
else if(sapi == SAPI_CCP && tei == GROUP_TEI)
{
/* call control (SAPI = 0) */
l2sc->stat.rx_ui++;
/* strip ui header */
m_adj(m, UI_HDR_LEN);
/* to upper layer */
DL_Unit_Data_Ind(unit, m);
}
else
{
l2sc->stat.err_rx_badui++;
NDBGL2(L2_U_ERR, "unknown UI frame!");
i4b_Dfreembuf(m);
}
break;
case DISC:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
l2sc->stat.rx_disc++;
NDBGL2(L2_U_MSG, "DISC, sapi = %d, tei = %d", sapi, tei);
l2sc->rxd_PF = pfbit;
i4b_next_l2state(l2sc, EV_RXDISC);
}
i4b_Dfreembuf(m);
break;
case XID:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
l2sc->stat.rx_xid++;
NDBGL2(L2_U_MSG, "XID, sapi = %d, tei = %d", sapi, tei);
}
i4b_Dfreembuf(m);
break;
/* responses */
case DM:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
l2sc->stat.rx_dm++;
NDBGL2(L2_U_MSG, "DM, sapi = %d, tei = %d", sapi, tei);
i4b_print_frame(m->m_len, m->m_data);
l2sc->rxd_PF = pfbit;
i4b_next_l2state(l2sc, EV_RXDM);
}
i4b_Dfreembuf(m);
break;
case UA:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
l2sc->stat.rx_ua++;
NDBGL2(L2_U_MSG, "UA, sapi = %d, tei = %d", sapi, tei);
l2sc->rxd_PF = pfbit;
i4b_next_l2state(l2sc, EV_RXUA);
}
i4b_Dfreembuf(m);
break;
case FRMR:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
l2sc->stat.rx_frmr++;
NDBGL2(L2_U_MSG, "FRMR, sapi = %d, tei = %d", sapi, tei);
l2sc->rxd_PF = pfbit;
i4b_next_l2state(l2sc, EV_RXFRMR);
}
i4b_Dfreembuf(m);
break;
default:
if((l2sc->tei_valid == TEI_VALID) &&
(l2sc->tei == GETTEI(*(ptr+OFF_TEI))))
{
NDBGL2(L2_U_ERR, "UNKNOWN TYPE ERROR, sapi = %d, tei = %d, frame = ", sapi, tei);
i4b_print_frame(m->m_len, m->m_data);
}
else
{
NDBGL2(L2_U_ERR, "not mine - UNKNOWN TYPE ERROR, sapi = %d, tei = %d, frame = ", sapi, tei);
i4b_print_frame(m->m_len, m->m_data);
}
l2sc->stat.err_rx_badui++;
i4b_Dfreembuf(m);
break;
}
}
static void
i4b_T203_timeout(l2_softc_t *l2sc)
{
NDBGL2(L2_T_ERR, "bri %d", l2sc->bri);
i4b_next_l2state(l2sc, EV_T203EXP);
}