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-rw-r--r--net/bridge/br_if.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 849deaf14108..7b4ce9113be2 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -368,10 +368,18 @@ void br_features_recompute(struct net_bridge *br)
list_for_each_entry(p, &br->port_list, list) {
unsigned long feature = p->dev->features;
+ /* if device needs checksumming, downgrade to hw checksumming */
if (checksum & NETIF_F_NO_CSUM && !(feature & NETIF_F_NO_CSUM))
checksum ^= NETIF_F_NO_CSUM | NETIF_F_HW_CSUM;
+
+ /* if device can't do all checksum, downgrade to ipv4/ipv6 */
if (checksum & NETIF_F_HW_CSUM && !(feature & NETIF_F_HW_CSUM))
- checksum ^= NETIF_F_HW_CSUM | NETIF_F_IP_CSUM;
+ checksum ^= NETIF_F_HW_CSUM
+ | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+
+ if (checksum & NETIF_F_IPV6_CSUM && !(feature & NETIF_F_IPV6_CSUM))
+ checksum &= ~NETIF_F_IPV6_CSUM;
+
if (!(feature & NETIF_F_IP_CSUM))
checksum = 0;