commit
a50af86dd49ee1851d1ccf06dd0019c05b95e297 upstream.
Hyper-V (and Azure) support using NVGRE which requires some extra space
for encapsulation headers. Because of this the largest allowed TSO
packet is reduced.
For older releases, hard code a fixed reduced value. For next release,
there is a better solution which uses result of host offload
negotiation.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
struct work_struct work;
};
+/* Restrict GSO size to account for NVGRE */
+#define NETVSC_GSO_MAX_SIZE 62768
+
#define RING_SIZE_MIN 64
static int ring_size = 128;
module_param(ring_size, int, S_IRUGO);
SET_ETHTOOL_OPS(net, ðtool_ops);
SET_NETDEV_DEV(net, &dev->device);
+ netif_set_gso_max_size(net, NETVSC_GSO_MAX_SIZE);
ret = register_netdev(net);
if (ret != 0) {