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authorStephen Hemminger <stephen@networkplumber.org>2018-03-27 11:28:48 -0700
committerDavid S. Miller <davem@davemloft.net>2018-03-29 11:45:06 -0400
commitf03dbb06dc380274e351ca4b1ee1587ed4529e62 (patch)
tree4eb44328d5d95796eef10bd3c17a25fbb1bde3ba
parent5568cdc368c349eee7b5fc48bc956234a0828d71 (diff)
downloadlinux-sh-f03dbb06dc380274e351ca4b1ee1587ed4529e62.tar.gz
hv_netvsc: enable multicast if necessary
My recent change to netvsc drive in how receive flags are handled broke multicast. The Hyper-v/Azure virtual interface there is not a multicast filter list, filtering is only all or none. The driver must enable all multicast if any multicast address is present. Fixes: 009f766ca238 ("hv_netvsc: filter multicast/broadcast") Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/hyperv/rndis_filter.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index a6ec41c399d6..465c42e30508 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -858,7 +858,7 @@ static void rndis_set_multicast(struct work_struct *w)
if (flags & IFF_PROMISC) {
filter = NDIS_PACKET_TYPE_PROMISCUOUS;
} else {
- if (flags & IFF_ALLMULTI)
+ if (!netdev_mc_empty(rdev->ndev) || (flags & IFF_ALLMULTI))
filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
if (flags & IFF_BROADCAST)
filter |= NDIS_PACKET_TYPE_BROADCAST;