vdpa_sim_net: should not drop the multicast/broadcast packet

[ Upstream commit 72455a1142527e607e1d69439f3ffa2ef6d09e26 ]

In the receive_filter(), should not drop the packet with the
broadcast/multicast address. Add the check for this

Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20221214054306.24145-1-lulu@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
index 11f5a12..584b975 100644 (file)
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
@@ -62,6 +62,9 @@ static bool receive_filter(struct vdpasim *vdpasim, size_t len)
        if (len < ETH_ALEN + hdr_len)
                return false;
 
+       if (is_broadcast_ether_addr(vdpasim->buffer + hdr_len) ||
+           is_multicast_ether_addr(vdpasim->buffer + hdr_len))
+               return true;
        if (!strncmp(vdpasim->buffer + hdr_len, vio_config->mac, ETH_ALEN))
                return true;