if_hatm_rx.c revision 121676
1116491Sharti/* 2116491Sharti * Copyright (c) 2001-2003 3116491Sharti * Fraunhofer Institute for Open Communication Systems (FhG Fokus). 4116491Sharti * All rights reserved. 5116491Sharti * 6116491Sharti * Redistribution and use in source and binary forms, with or without 7116491Sharti * modification, are permitted provided that the following conditions 8116491Sharti * are met: 9116491Sharti * 1. Redistributions of source code must retain the above copyright 10116491Sharti * notice, this list of conditions and the following disclaimer. 11116491Sharti * 2. Redistributions in binary form must reproduce the above copyright 12116491Sharti * notice, this list of conditions and the following disclaimer in the 13116491Sharti * documentation and/or other materials provided with the distribution. 14116491Sharti * 15116491Sharti * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16116491Sharti * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17116491Sharti * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18116491Sharti * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19116491Sharti * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20116491Sharti * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21116491Sharti * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22116491Sharti * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23116491Sharti * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24116491Sharti * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25116491Sharti * SUCH DAMAGE. 26116491Sharti * 27116491Sharti * Author: Hartmut Brandt <harti@freebsd.org> 28116491Sharti * 29116491Sharti * ForeHE driver. 30116491Sharti * 31116491Sharti * Receive. 32116491Sharti */ 33116491Sharti 34116519Sharti#include <sys/cdefs.h> 35116519Sharti__FBSDID("$FreeBSD: head/sys/dev/hatm/if_hatm_rx.c 121676 2003-10-29 13:14:39Z harti $"); 36116519Sharti 37116491Sharti#include "opt_inet.h" 38116491Sharti#include "opt_natm.h" 39116491Sharti 40116491Sharti#include <sys/types.h> 41116491Sharti#include <sys/param.h> 42116491Sharti#include <sys/systm.h> 43116491Sharti#include <sys/kernel.h> 44116491Sharti#include <sys/bus.h> 45116491Sharti#include <sys/errno.h> 46116491Sharti#include <sys/conf.h> 47116491Sharti#include <sys/module.h> 48116491Sharti#include <sys/queue.h> 49116491Sharti#include <sys/syslog.h> 50116491Sharti#include <sys/condvar.h> 51116491Sharti#include <sys/sysctl.h> 52116491Sharti#include <vm/uma.h> 53116491Sharti 54116491Sharti#include <sys/sockio.h> 55116491Sharti#include <sys/mbuf.h> 56116491Sharti#include <sys/socket.h> 57116491Sharti 58116491Sharti#include <net/if.h> 59116491Sharti#include <net/if_media.h> 60116491Sharti#include <net/if_atm.h> 61116491Sharti#include <net/route.h> 62116491Sharti#ifdef ENABLE_BPF 63116491Sharti#include <net/bpf.h> 64116491Sharti#endif 65116491Sharti#include <netinet/in.h> 66116491Sharti#include <netinet/if_atm.h> 67116491Sharti 68116491Sharti#include <machine/bus.h> 69116491Sharti#include <machine/resource.h> 70116491Sharti#include <sys/bus.h> 71116491Sharti#include <sys/rman.h> 72119280Simp#include <dev/pci/pcireg.h> 73119280Simp#include <dev/pci/pcivar.h> 74116491Sharti 75116491Sharti#include <dev/utopia/utopia.h> 76116491Sharti#include <dev/hatm/if_hatmconf.h> 77116491Sharti#include <dev/hatm/if_hatmreg.h> 78116491Sharti#include <dev/hatm/if_hatmvar.h> 79116491Sharti 80116491Shartivoid 81116491Shartihatm_rx(struct hatm_softc *sc, u_int cid, u_int flags, struct mbuf *m0, 82116491Sharti u_int len) 83116491Sharti{ 84116491Sharti struct hevcc *vcc; 85116491Sharti struct atm_pseudohdr aph; 86116491Sharti struct mbuf *m, *m1; 87116491Sharti u_int vpi, vci; 88116491Sharti u_char *ptr; 89116491Sharti 90116491Sharti DBG(sc, RX, ("cid=%#x flags=%#x len=%u mbuf=%p", cid, flags, len, m0)); 91116491Sharti 92116491Sharti vcc = sc->vccs[cid]; 93116491Sharti if (vcc == NULL) 94116491Sharti goto drop; 95116491Sharti 96116491Sharti if (flags & HE_REGM_RBRQ_CON_CLOSED) { 97116491Sharti if (vcc->vflags & HE_VCC_RX_CLOSING) { 98116491Sharti vcc->vflags &= ~HE_VCC_RX_CLOSING; 99118540Sharti if (vcc->param.flags & ATMIO_FLAG_ASYNC) { 100116491Sharti if (!(vcc->vflags & HE_VCC_OPEN)) 101116491Sharti hatm_vcc_closed(sc, cid); 102116491Sharti } else 103116491Sharti cv_signal(&sc->vcc_cv); 104116491Sharti } 105116491Sharti goto drop; 106116491Sharti } 107116491Sharti 108116491Sharti if (!(vcc->vflags & HE_VCC_RX_OPEN)) 109116491Sharti goto drop; 110116491Sharti 111116491Sharti if (flags & HE_REGM_RBRQ_HBUF_ERROR) { 112116491Sharti sc->istats.hbuf_error++; 113116491Sharti if (vcc->chain != NULL) { 114116491Sharti m_freem(vcc->chain); 115116491Sharti vcc->chain = vcc->last = NULL; 116116491Sharti } 117116491Sharti goto drop; 118116491Sharti } 119121676Sharti if (m0 == NULL) { 120121676Sharti sc->istats.no_rcv_mbuf++; 121121676Sharti return; 122121676Sharti } 123116491Sharti 124116491Sharti if ((m0->m_len = len) == 0) { 125116491Sharti sc->istats.empty_hbuf++; 126116491Sharti m_free(m0); 127116491Sharti 128116491Sharti } else if (vcc->chain == NULL) { 129116491Sharti sc->istats.rx_seg++; 130116491Sharti vcc->chain = vcc->last = m0; 131116491Sharti vcc->last->m_next = NULL; 132116491Sharti vcc->chain->m_pkthdr.len = m0->m_len; 133116491Sharti vcc->chain->m_pkthdr.rcvif = &sc->ifatm.ifnet; 134116491Sharti 135116491Sharti } else { 136116491Sharti sc->istats.rx_seg++; 137116491Sharti vcc->last->m_next = m0; 138116491Sharti vcc->last = m0; 139116491Sharti vcc->last->m_next = NULL; 140116491Sharti vcc->chain->m_pkthdr.len += m0->m_len; 141116491Sharti } 142116491Sharti 143116491Sharti if (!(flags & HE_REGM_RBRQ_END_PDU)) 144116491Sharti return; 145116491Sharti 146116491Sharti if (flags & HE_REGM_RBRQ_CRC_ERROR) { 147116491Sharti if (vcc->chain) 148116491Sharti m_freem(vcc->chain); 149116491Sharti vcc->chain = vcc->last = NULL; 150116491Sharti sc->istats.crc_error++; 151116491Sharti sc->ifatm.ifnet.if_ierrors++; 152116491Sharti return; 153116491Sharti } 154116491Sharti if (flags & HE_REGM_RBRQ_LEN_ERROR) { 155116491Sharti if (vcc->chain) 156116491Sharti m_freem(vcc->chain); 157116491Sharti vcc->chain = vcc->last = NULL; 158116491Sharti sc->istats.len_error++; 159116491Sharti sc->ifatm.ifnet.if_ierrors++; 160116491Sharti return; 161116491Sharti } 162116491Sharti 163116491Sharti#if 0 164116491Sharti { 165116491Sharti struct mbuf *tmp; 166116491Sharti 167116491Sharti for (tmp = vcc->chain; tmp != NULL; tmp = tmp->m_next) { 168116491Sharti printf("mbuf %p: len=%u\n", tmp, tmp->m_len); 169116491Sharti for (ptr = mtod(tmp, u_char *); 170116491Sharti ptr < mtod(tmp, u_char *) + tmp->m_len; ptr++) 171116491Sharti printf("%02x ", *ptr); 172116491Sharti printf("\n"); 173116491Sharti } 174116491Sharti } 175116491Sharti#endif 176116491Sharti 177116491Sharti if (vcc->param.aal == ATMIO_AAL_5) { 178116491Sharti /* 179116491Sharti * Need to remove padding and the trailer. The trailer 180116491Sharti * may be split accross buffers according to 2.10.1.2 181116491Sharti * Assume that mbufs sizes are even (buffer sizes and cell 182116491Sharti * payload sizes are) and that there are no empty mbufs. 183116491Sharti */ 184116491Sharti m = vcc->last; 185116491Sharti if (m->m_len == 2) { 186116491Sharti /* Ah, oh, only part of CRC */ 187116491Sharti if (m == vcc->chain) { 188116491Sharti /* ups */ 189116491Sharti sc->istats.short_aal5++; 190116491Sharti m_freem(vcc->chain); 191116491Sharti vcc->chain = vcc->last = NULL; 192116491Sharti return; 193116491Sharti } 194116491Sharti for (m1 = vcc->chain; m1->m_next != m; m1 = m1->m_next) 195116491Sharti ; 196116491Sharti ptr = (u_char *)m1->m_data + m1->m_len - 4; 197116491Sharti 198116491Sharti } else if (m->m_len == 4) { 199116491Sharti /* Ah, oh, only CRC */ 200116491Sharti if (m == vcc->chain) { 201116491Sharti /* ups */ 202116491Sharti sc->istats.short_aal5++; 203116491Sharti m_freem(vcc->chain); 204116491Sharti vcc->chain = vcc->last = NULL; 205116491Sharti return; 206116491Sharti } 207116491Sharti for (m1 = vcc->chain; m1->m_next != m; m1 = m1->m_next) 208116491Sharti ; 209116491Sharti ptr = (u_char *)m1->m_data + m1->m_len - 2; 210116491Sharti 211116491Sharti } else if (m->m_len >= 6) { 212116491Sharti ptr = (u_char *)m->m_data + m->m_len - 6; 213116491Sharti } else 214116491Sharti panic("hatm_rx: bad mbuf len %d", m->m_len); 215116491Sharti 216116491Sharti len = (ptr[0] << 8) + ptr[1]; 217116491Sharti if (len > (u_int)vcc->chain->m_pkthdr.len - 4) { 218116491Sharti sc->istats.badlen_aal5++; 219116491Sharti m_freem(vcc->chain); 220116491Sharti vcc->chain = vcc->last = NULL; 221116491Sharti return; 222116491Sharti } 223116491Sharti m_adj(vcc->chain, -(vcc->chain->m_pkthdr.len - len)); 224116491Sharti } 225116491Sharti m = vcc->chain; 226116491Sharti vcc->chain = vcc->last = NULL; 227116491Sharti 228116491Sharti#ifdef ENABLE_BPF 229116491Sharti if (!(vcc->param.flags & ATMIO_FLAG_NG) && 230118540Sharti (vcc->param.aal == ATMIO_AAL_5) && 231116491Sharti (vcc->param.flags & ATM_PH_LLCSNAP)) 232116491Sharti BPF_MTAP(&sc->ifatm.ifnet, m); 233116491Sharti#endif 234116491Sharti 235116491Sharti vpi = HE_VPI(cid); 236116491Sharti vci = HE_VCI(cid); 237116491Sharti 238116491Sharti ATM_PH_FLAGS(&aph) = vcc->param.flags & 0xff; 239116491Sharti ATM_PH_VPI(&aph) = vpi; 240116491Sharti ATM_PH_SETVCI(&aph, vci); 241116491Sharti 242116491Sharti sc->ifatm.ifnet.if_ipackets++; 243116491Sharti /* this is in if_atmsubr.c */ 244116491Sharti /* sc->ifatm.ifnet.if_ibytes += len; */ 245116491Sharti 246116491Sharti vcc->ibytes += len; 247116491Sharti vcc->ipackets++; 248116491Sharti 249116491Sharti#if 0 250116491Sharti { 251116491Sharti struct mbuf *tmp; 252116491Sharti 253116491Sharti for (tmp = m; tmp != NULL; tmp = tmp->m_next) { 254116491Sharti printf("mbuf %p: len=%u\n", tmp, tmp->m_len); 255116491Sharti for (ptr = mtod(tmp, u_char *); 256116491Sharti ptr < mtod(tmp, u_char *) + tmp->m_len; ptr++) 257116491Sharti printf("%02x ", *ptr); 258116491Sharti printf("\n"); 259116491Sharti } 260116491Sharti } 261116491Sharti#endif 262116491Sharti 263116491Sharti atm_input(&sc->ifatm.ifnet, &aph, m, vcc->rxhand); 264116491Sharti 265116491Sharti return; 266116491Sharti 267116491Sharti drop: 268116491Sharti if (m0 != NULL) 269116491Sharti m_free(m0); 270116491Sharti} 271116491Sharti 272116491Shartivoid 273116491Shartihatm_rx_vcc_open(struct hatm_softc *sc, u_int cid) 274116491Sharti{ 275116491Sharti struct hevcc *vcc = sc->vccs[cid]; 276116491Sharti uint32_t rsr0, rsr1, rsr4; 277116491Sharti 278116491Sharti rsr0 = rsr1 = rsr4 = 0; 279116491Sharti 280116491Sharti if (vcc->param.traffic == ATMIO_TRAFFIC_ABR) { 281116491Sharti rsr1 |= HE_REGM_RSR1_AQI; 282116491Sharti rsr4 |= HE_REGM_RSR4_AQI; 283116491Sharti } 284116491Sharti 285116491Sharti if (vcc->param.aal == ATMIO_AAL_5) { 286116491Sharti rsr0 |= HE_REGM_RSR0_STARTPDU | HE_REGM_RSR0_AAL_5; 287116491Sharti } else if (vcc->param.aal == ATMIO_AAL_0) { 288116491Sharti rsr0 |= HE_REGM_RSR0_AAL_0; 289116491Sharti } else { 290116491Sharti if (sc->rbp_s1.size != 0) { 291116491Sharti rsr1 |= (1 << HE_REGS_RSR1_GROUP); 292116491Sharti rsr4 |= (1 << HE_REGS_RSR4_GROUP); 293116491Sharti } 294117382Sharti rsr0 |= HE_REGM_RSR0_AAL_RAW | HE_REGM_RSR0_PTI7 | 295117382Sharti HE_REGM_RSR0_RM | HE_REGM_RSR0_F5OAM; 296116491Sharti } 297116491Sharti rsr0 |= HE_REGM_RSR0_OPEN; 298116491Sharti 299116491Sharti WRITE_RSR(sc, cid, 0, 0xf, rsr0); 300116491Sharti WRITE_RSR(sc, cid, 1, 0xf, rsr1); 301116491Sharti WRITE_RSR(sc, cid, 4, 0xf, rsr4); 302116491Sharti 303116491Sharti vcc->vflags |= HE_VCC_RX_OPEN; 304116491Sharti} 305116491Sharti 306116491Sharti/* 307116491Sharti * Close the RX side of a VCC. 308116491Sharti */ 309116491Shartivoid 310116491Shartihatm_rx_vcc_close(struct hatm_softc *sc, u_int cid) 311116491Sharti{ 312116491Sharti struct hevcc *vcc = sc->vccs[cid]; 313116491Sharti uint32_t v; 314116491Sharti 315116491Sharti vcc->vflags |= HE_VCC_RX_CLOSING; 316116491Sharti WRITE_RSR(sc, cid, 0, 0xf, 0); 317116491Sharti 318116491Sharti v = READ4(sc, HE_REGO_RCCSTAT); 319116491Sharti while ((sc->ifatm.ifnet.if_flags & IFF_RUNNING) && 320116491Sharti (READ4(sc, HE_REGO_RCCSTAT) & HE_REGM_RCCSTAT_PROG)) 321116491Sharti cv_timedwait(&sc->cv_rcclose, &sc->mtx, 1); 322116491Sharti 323116491Sharti if (!(sc->ifatm.ifnet.if_flags & IFF_RUNNING)) 324116491Sharti return; 325116491Sharti 326116491Sharti WRITE_MBOX4(sc, HE_REGO_RCON_CLOSE, cid); 327116491Sharti 328116491Sharti vcc->vflags |= HE_VCC_RX_CLOSING; 329116491Sharti vcc->vflags &= ~HE_VCC_RX_OPEN; 330116491Sharti} 331