[PATCHv4 net-next 1/2] udp: call udp_encap_enable for v6 sockets when enabling encap

When enabling encap for a ipv6 socket without udp_encap_needed_key increased, UDP GRO won't work for v4 mapped v6 address packets as sk will be NULL in udp4_gro_receive(). This patch is to enable it by increasing udp_encap_needed_key for v6 sockets in udp_tunnel_encap_enable(), and correspondingly

Re: [PATCHv4 net-next 1/2] udp: call udp_encap_enable for v6 sockets when enabling encap

On Tue, Jan 26, 2021 at 5:59 PM Xin Long wrote: > > When enabling encap for a ipv6 socket without udp_encap_needed_key > increased, UDP GRO won't work for v4 mapped v6 address packets as > sk will be NULL in udp4_gro_receive(). > > This patch is to enable it by increasing udp_encap_needed_key for