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tun: allow to attach ebpf socket filter

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This patch allows userspace to attach eBPF filter to tun. This will
allow to implement VM dataplane filtering in a more efficient way
compared to cBPF filter by allowing either qemu or libvirt to
attach eBPF filter to tun.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Wang
2018-01-16 16:31:02 +08:00
committed by David S. Miller
parent cd5681d7d8
commit aff3d70a07
2 changed files with 35 additions and 4 deletions
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1
include/uapi/linux/if_tun.h
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@@ -58,6 +58,7 @@
#define TUNSETVNETBE _IOW('T', 222, int)
#define TUNGETVNETBE _IOR('T', 223, int)
#define TUNSETSTEERINGEBPF _IOR('T', 224, int)
#define TUNSETFILTEREBPF _IOR('T', 225, int)
/* TUNSETIFF ifr flags */
#define IFF_TUN 0x0001