OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h],
[skb_copy_from_linear_data_offset],
[OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])])
OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h],
[skb_copy_from_linear_data_offset],
[OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])])