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Change bridge(4) to use if_transmit for forwarding packets to underlying

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interfaces instead of queueing.

Tested by:	ray
This commit is contained in:
Gleb Smirnoff 2012-09-03 10:08:20 +00:00
parent 6a8dada257
commit 3582a9f6c6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=240071
1 changed files with 33 additions and 33 deletions
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66
sys/net/if_bridge.c
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@ -245,11 +245,12 @@ static void bridge_ifdetach(void *arg __unused, struct ifnet *);
static void bridge_init(void *);
static void bridge_dummynet(struct mbuf *, struct ifnet *);
static void bridge_stop(struct ifnet *, int);
static void bridge_start(struct ifnet *);
static int bridge_transmit(struct ifnet *, struct mbuf *);
static void bridge_qflush(struct ifnet *);
static struct mbuf *bridge_input(struct ifnet *, struct mbuf *);
static int bridge_output(struct ifnet *, struct mbuf *, struct sockaddr *,
struct rtentry *);
static void bridge_enqueue(struct bridge_softc *, struct ifnet *,
static int bridge_enqueue(struct bridge_softc *, struct ifnet *,
struct mbuf *);
static void bridge_rtdelete(struct bridge_softc *, struct ifnet *ifp, int);
@ -600,12 +601,10 @@ bridge_clone_create(struct if_clone *ifc, int unit, caddr_t params)
if_initname(ifp, ifc->ifc_name, unit);
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = bridge_ioctl;
ifp->if_start = bridge_start;
ifp->if_transmit = bridge_transmit;
ifp->if_qflush = bridge_qflush;
ifp->if_init = bridge_init;
ifp->if_type = IFT_BRIDGE;
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_READY(&ifp->if_snd);
/*
* Generate an ethernet address with a locally administered address.
@ -1780,7 +1779,7 @@ bridge_stop(struct ifnet *ifp, int disable)
* Enqueue a packet on a bridge member interface.
*
*/
static void
static int
bridge_enqueue(struct bridge_softc *sc, struct ifnet *dst_ifp, struct mbuf *m)
{
int len, err = 0;
@ -1823,6 +1822,8 @@ bridge_enqueue(struct bridge_softc *sc, struct ifnet *dst_ifp, struct mbuf *m)
if (mflags & M_MCAST)
sc->sc_ifp->if_omcasts++;
}
return (err);
}
/*
@ -1981,44 +1982,43 @@ bridge_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *sa,
}
/*
* bridge_start:
* bridge_transmit:
*
* Start output on a bridge.
* Do output on a bridge.
*
*/
static void
bridge_start(struct ifnet *ifp)
static int
bridge_transmit(struct ifnet *ifp, struct mbuf *m)
{
struct bridge_softc *sc;
struct mbuf *m;
struct ether_header *eh;
struct ifnet *dst_if;
int error = 0;
sc = ifp->if_softc;
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
for (;;) {
IFQ_DEQUEUE(&ifp->if_snd, m);
if (m == 0)
break;
ETHER_BPF_MTAP(ifp, m);
ETHER_BPF_MTAP(ifp, m);
BRIDGE_LOCK(sc);
if ((m->m_flags & (M_BCAST|M_MCAST)) == 0) {
struct ether_header *eh;
struct ifnet *dst_if;
eh = mtod(m, struct ether_header *);
dst_if = NULL;
dst_if = bridge_rtlookup(sc, eh->ether_dhost, 1);
BRIDGE_UNLOCK(sc);
error = bridge_enqueue(sc, dst_if, m);
} else
bridge_broadcast(sc, ifp, m, 0);
BRIDGE_LOCK(sc);
if ((m->m_flags & (M_BCAST|M_MCAST)) == 0) {
dst_if = bridge_rtlookup(sc, eh->ether_dhost, 1);
}
return (error);
}
if (dst_if == NULL)
bridge_broadcast(sc, ifp, m, 0);
else {
BRIDGE_UNLOCK(sc);
bridge_enqueue(sc, dst_if, m);
}
}
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
/*
* The ifp->if_qflush entry point for if_bridge(4) is no-op.
*/
static void
bridge_qflush(struct ifnet *ifp __unused)
{
}
/*