diff options
Diffstat (limited to 'sys/net/bpf.c')
| -rw-r--r-- | sys/net/bpf.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/sys/net/bpf.c b/sys/net/bpf.c index 5d6dc02..05682ff 100644 --- a/sys/net/bpf.c +++ b/sys/net/bpf.c @@ -102,7 +102,7 @@ static void bpf_attachd(struct bpf_d *, struct bpf_if *); static void bpf_detachd(struct bpf_d *); static void bpf_freed(struct bpf_d *); static void bpf_mcopy(const void *, void *, size_t); -static int bpf_movein(struct uio *, int, int, struct mbuf **, +static int bpf_movein(struct uio *, int, struct ifnet *, struct mbuf **, struct sockaddr *, int *, struct bpf_insn *); static int bpf_setif(struct bpf_d *, struct ifreq *); static void bpf_timed_out(void *); @@ -158,10 +158,11 @@ static struct filterops bpfread_filtops = { 1, NULL, filt_bpfdetach, filt_bpfread }; static int -bpf_movein(struct uio *uio, int linktype, int mtu, struct mbuf **mp, +bpf_movein(struct uio *uio, int linktype, struct ifnet *ifp, struct mbuf **mp, struct sockaddr *sockp, int *hdrlen, struct bpf_insn *wfilter) { const struct ieee80211_bpf_params *p; + struct ether_header *eh; struct mbuf *m; int error; int len; @@ -241,7 +242,7 @@ bpf_movein(struct uio *uio, int linktype, int mtu, struct mbuf **mp, len = uio->uio_resid; - if (len - hlen > mtu) + if (len - hlen > ifp->if_mtu) return (EMSGSIZE); if ((unsigned)len > MCLBYTES) @@ -273,6 +274,20 @@ bpf_movein(struct uio *uio, int linktype, int mtu, struct mbuf **mp, goto bad; } + /* Check for multicast destination */ + switch (linktype) { + case DLT_EN10MB: + eh = mtod(m, struct ether_header *); + if (ETHER_IS_MULTICAST(eh->ether_dhost)) { + if (bcmp(ifp->if_broadcastaddr, eh->ether_dhost, + ETHER_ADDR_LEN) == 0) + m->m_flags |= M_BCAST; + else + m->m_flags |= M_MCAST; + } + break; + } + /* * Make room for link header, and copy it to sockaddr */ @@ -615,7 +630,7 @@ bpfwrite(struct cdev *dev, struct uio *uio, int ioflag) bzero(&dst, sizeof(dst)); m = NULL; hlen = 0; - error = bpf_movein(uio, (int)d->bd_bif->bif_dlt, ifp->if_mtu, + error = bpf_movein(uio, (int)d->bd_bif->bif_dlt, ifp, &m, &dst, &hlen, d->bd_wfilter); if (error) return (error); |
