MF22... add bridging support to the device drivers. Without this

bridging cannot work on -current/releng3!

sys/dev/de/if_de.c

@@ -1,5 +1,5 @@
 /*	$NetBSD: if_de.c,v 1.82 1999/02/28 17:08:51 explorer Exp $	*/
-/*	$Id: if_de.c,v 1.100 1999/03/13 09:21:27 peter Exp $ */
+/*	$Id: if_de.c,v 1.101 1999/03/14 08:32:52 peter Exp $ */
 
 /*-
  * Copyright (c) 1994-1997 Matt Thomas ([email protected])
@@ -124,6 +124,10 @@
 #include <pci/dc21040reg.h>
 #define	DEVAR_INCLUDE	"pci/if_devar.h"
 #endif
+#include "opt_bdg.h"
+#ifdef BRIDGE
+#include <net/bridge.h>
+#endif
 #endif /* __FreeBSD__ */
 
 #if defined(__bsdi__)
@@ -3544,6 +3548,23 @@ tulip_rx_intr(
 	    }
 #endif
 	    sc->tulip_flags |= TULIP_RXACT;
+
+#ifdef BRIDGE /* see code in if_ed.c */
+            ms->m_pkthdr.rcvif = ifp; /* XXX */
+            ms->m_pkthdr.len = total_len; /* XXX */
+            if (do_bridge) {
+                struct ifnet *bdg_ifp ;
+                bdg_ifp = bridge_in(ms);
+                if (bdg_ifp == BDG_DROP)
+                    goto next ; /* and drop */
+                if (bdg_ifp != BDG_LOCAL)
+                    bdg_forward(&ms, bdg_ifp);
+                if (bdg_ifp != BDG_LOCAL && bdg_ifp != BDG_BCAST &&
+                        bdg_ifp != BDG_MCAST)
+                    goto next ; /* and drop */
+                /* all others accepted locally */
+            } else
+#endif
 	    if ((sc->tulip_flags & (TULIP_PROMISC|TULIP_HASHONLY))
 		    && (eh.ether_dhost[0] & 1) == 0
 		    && !TULIP_ADDREQUAL(eh.ether_dhost, sc->tulip_enaddr))

sys/dev/ed/if_ed.c

@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_ed.c,v 1.148 1999/01/19 00:21:38 peter Exp $
+ *	$Id: if_ed.c,v 1.149 1999/01/28 01:59:53 dillon Exp $
  */
 
 /*
@@ -68,6 +68,10 @@
 #if NBPFILTER > 0
 #include <net/bpf.h>
 #endif
+#include "opt_bdg.h"
+#ifdef BRIDGE
+#include <net/bridge.h>
+#endif
 
 #include <machine/clock.h>
 #include <machine/md_var.h>
@@ -2253,6 +2257,13 @@ ed_rint(sc)
 				len += ((packet_hdr.next_packet - sc->rec_page_start) +
 					(sc->rec_page_stop - sc->next_packet)) * ED_PAGE_SIZE;
 			}
+			/*
+			 * because buffers are aligned on 256-byte boundary,
+			 * the length computed above is off by 256 in almost
+			 * all cases. Fix it...
+			 */
+			if (len & 0xff)
+				len -= 256 ;
 			if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN 
 				   + sizeof(struct ed_ring)))
 				sc->mibdata.dot3StatsFrameTooLongs++;
@@ -2731,6 +2742,42 @@ ed_get_packet(sc, buf, len, multicast)
 	m->m_data += 2;
 	eh = mtod(m, struct ether_header *);
 
+#ifdef BRIDGE
+	/*
+	 * Get link layer header, invoke brige_in, then
+	 * depending on the outcome of the test fetch the rest of the
+	 * packet and either pass up or call bdg_forward.
+	 */
+	if (do_bridge) {
+		struct ifnet *ifp ;
+		int need_more = 1 ; /* in case not bpf */
+
+#if NBPFILTER > 0
+		if (sc->arpcom.ac_if.if_bpf) {
+			need_more = 0 ;
+			ed_ring_copy(sc, buf, (char *)eh, len);
+			bpf_mtap(&sc->arpcom.ac_if, m);
+		} else
+#endif
+			ed_ring_copy(sc, buf, (char *)eh, 14);
+		ifp = bridge_in(m);
+		if (ifp == BDG_DROP) {
+			m_freem(m);
+			return ;
+		}
+		/* else fetch rest of pkt and continue */
+		if (need_more && len > 14)
+			ed_ring_copy(sc, buf+14, (char *)(eh+1), len - 14);
+		if (ifp != BDG_LOCAL )
+			bdg_forward(&m, ifp); /* not local, need forwarding */
+		if (ifp == BDG_LOCAL || ifp == BDG_BCAST || ifp == BDG_MCAST)
+			goto getit ;
+		/* not local and not multicast, just drop it */
+		if (m)
+			m_freem(m);
+		return ;
+	}
+#endif
 	/*
 	 * Get packet, including link layer address, from interface.
 	 */
@@ -2742,23 +2789,21 @@ ed_get_packet(sc, buf, len, multicast)
 	 * Check if there's a BPF listener on this interface. If so, hand off
 	 * the raw packet to bpf.
 	 */
-	if (sc->arpcom.ac_if.if_bpf) {
+	if (sc->arpcom.ac_if.if_bpf)
 		bpf_mtap(&sc->arpcom.ac_if, m);
-
-		/*
-		 * Note that the interface cannot be in promiscuous mode if
-		 * there are no BPF listeners.  And if we are in promiscuous
-		 * mode, we have to check if this packet is really ours.
-		 */
-		if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) &&
-		    bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
+#endif
+	/*
+	 * If we are in promiscuous mode, we have to check whether
+	 * this packet is really for us.
+	 */
+	if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) &&
+		bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
 		      sizeof(eh->ether_dhost)) != 0 && multicast == 0) {
-			m_freem(m);
-			return;
-		}
+		m_freem(m);
+		return;
 	}
-#endif
 
+getit:
 	/*
 	 * Remove link layer address.
 	 */

sys/dev/fxp/if_fxp.c

@@ -27,7 +27,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: if_fxp.c,v 1.63 1999/02/11 21:47:09 julian Exp $
+ *	$Id: if_fxp.c,v 1.64 1999/02/12 17:56:23 julian Exp $
  */
 
 /*
@@ -103,6 +103,12 @@
 
 #endif /* __NetBSD__ */
 
+#include "opt_bdg.h"
+#ifdef BRIDGE
+#include <net/if_types.h>
+#include <net/bridge.h>
+#endif
+
 /*
  * NOTE!  On the Alpha, we have an alignment constraint.  The
  * card DMAs the packet immediately following the RFA.  However,
@@ -1010,31 +1016,50 @@ fxp_intr(arg)
 					}
 					m->m_pkthdr.rcvif = ifp;
 					m->m_pkthdr.len = m->m_len =
-					    total_len -
-					    sizeof(struct ether_header);
+					    total_len ;
 					eh = mtod(m, struct ether_header *);
 #if NBPFILTER > 0
-					if (ifp->if_bpf) {
+					if (ifp->if_bpf)
 						bpf_tap(FXP_BPFTAP_ARG(ifp),
 						    mtod(m, caddr_t),
 						    total_len); 
-						/*
-						 * Only pass this packet up
-						 * if it is for us.
-						 */
-						if ((ifp->if_flags &
-						    IFF_PROMISC) &&
-						    (rfa->rfa_status &
-						    FXP_RFA_STATUS_IAMATCH) &&
-						    (eh->ether_dhost[0] & 1)
-						    == 0) {
-							m_freem(m);
-							goto rcvloop;
-						}
-					}
 #endif /* NBPFILTER > 0 */
+#ifdef BRIDGE
+                                        if (do_bridge) {
+                                            struct ifnet *bdg_ifp ;
+                                            bdg_ifp = bridge_in(m);
+                                            if (bdg_ifp == BDG_DROP)
+                                                goto dropit ;
+                                            if (bdg_ifp != BDG_LOCAL)
+                                                bdg_forward(&m, bdg_ifp);
+                                            if (bdg_ifp != BDG_LOCAL &&
+                                                    bdg_ifp != BDG_BCAST &&
+                                                    bdg_ifp != BDG_MCAST)
+                                                goto dropit ;
+                                            goto getit ;
+                                        }
+#endif
+					/*
+					 * Only pass this packet up
+					 * if it is for us.
+					 */
+					if ((ifp->if_flags &
+					    IFF_PROMISC) &&
+					    (rfa->rfa_status &
+					    FXP_RFA_STATUS_IAMATCH) &&
+					    (eh->ether_dhost[0] & 1)
+					    == 0) {
+dropit:
+					    if (m)
+						m_freem(m);
+					    goto rcvloop;
+					}
+getit:
 					m->m_data +=
 					    sizeof(struct ether_header);
+					m->m_len -=
+					    sizeof(struct ether_header);
+					m->m_pkthdr.len = m->m_len ;
 					ether_input(ifp, eh, m);
 				}
 				goto rcvloop;

sys/dev/lnc/if_lnc.c

@@ -30,7 +30,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: if_lnc.c,v 1.52 1999/01/31 00:39:20 paul Exp $
+ * $Id: if_lnc.c,v 1.53 1999/01/31 00:44:37 paul Exp $
  */
 
 /*
@@ -92,6 +92,11 @@
 #include <net/bpf.h>
 #endif
 
+#include "opt_bdg.h"
+#ifdef BRIDGE
+#include <net/bridge.h>
+#endif
+
 #ifdef PC98
 #include <machine/clock.h>
 #endif
@@ -597,7 +602,7 @@ lnc_rint(struct lnc_softc *sc)
 				 * ethernet and packet headers
 				 */
 				head->m_pkthdr.rcvif = &sc->arpcom.ac_if;
-				head->m_pkthdr.len = pkt_len - sizeof *eh;
+				head->m_pkthdr.len = pkt_len ;
 
 				/*
 				 * BPF expects the ether header to be in the first
@@ -611,7 +616,26 @@ lnc_rint(struct lnc_softc *sc)
 #if NBPFILTER > 0
 				if (sc->arpcom.ac_if.if_bpf)
 					bpf_mtap(&sc->arpcom.ac_if, head);
-
+#endif
+#ifdef BRIDGE
+				if (do_bridge) {
+				    struct ifnet *bdg_ifp ;
+
+				    bdg_ifp = bridge_in(head);
+				    if (bdg_ifp == BDG_DROP)
+					m_freem(head);
+				    else {
+					if (bdg_ifp != BDG_LOCAL)
+					    bdg_forward(&head, bdg_ifp);
+					if (  bdg_ifp == BDG_LOCAL ||
+				  	      bdg_ifp == BDG_BCAST ||
+				  	      bdg_ifp == BDG_MCAST )
+					    goto getit;
+					else if (head)
+					    m_freem(head);
+				    }
+				} else
+#endif
 				/* Check this packet is really for us */
 
 				if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) &&
@@ -620,11 +644,12 @@ lnc_rint(struct lnc_softc *sc)
 							sizeof(eh->ether_dhost))))
 						m_freem(head);
 				else
-#endif
 				{
+getit:
 					/* Skip over the ether header */
 					head->m_data += sizeof *eh;
 					head->m_len -= sizeof *eh;
+					head->m_pkthdr.len -= sizeof *eh;
 
 					ether_input(&sc->arpcom.ac_if, eh, head);
 				}