GRE_FEATURES 930 net/ipv4/ip_gre.c dev->features |= GRE_FEATURES; GRE_FEATURES 931 net/ipv4/ip_gre.c dev->hw_features |= GRE_FEATURES; GRE_FEATURES 1263 net/ipv4/ip_gre.c dev->features |= GRE_FEATURES; GRE_FEATURES 1264 net/ipv4/ip_gre.c dev->hw_features |= GRE_FEATURES;