datapath: Don't pass __GFP_ZERO to kmalloc on older kernels.

[openvswitch] / datapath / datapath.h

diff --git a/datapath/datapath.h b/datapath/datapath.h
index a0649064bf956d37ebcee149632ec4e796841519..15a989892862a99392a70e261bd581edc2cf3e41 100644 (file)
--- a/datapath/datapath.h
+++ b/datapath/datapath.h
@@ -102,9 +102,11 @@ struct datapath {
  * struct ovs_skb_cb - OVS data in skb CB
  * @vport: The datapath port on which the skb entered the switch.
  * @flow: The flow associated with this packet.  May be %NULL if no flow.
+ * @tun_id: ID of the tunnel that encapsulated this packet.  It is 0 if the
  * @ip_summed: Consistently stores L4 checksumming status across different
  * kernel versions.
- * @tun_id: ID of the tunnel that encapsulated this packet.  It is 0 if the
+ * @csum_start: Stores the offset from which to start checksumming independent
+ * of the transport header on all kernel versions.
  * packet was not received on a tunnel.
  * @vlan_tci: Provides a substitute for the skb->vlan_tci field on kernels
  * before 2.6.27.
@@ -112,10 +114,11 @@ struct datapath {
 struct ovs_skb_cb {
        struct vport            *vport;
        struct sw_flow          *flow;
+       __be64                  tun_id;
 #ifdef NEED_CSUM_NORMALIZE
        enum csum_type          ip_summed;
+       u16                     csum_start;
 #endif
-       __be64                  tun_id;
 #ifdef NEED_VLAN_FIELD
        u16                     vlan_tci;
 #endif