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| H A D | tun.c | diff 043d222f93ab8c76b56a3b315cd8692e35affb6c Tue Sep 11 22:17:07 CDT 2018 Jason Wang <jasowang@redhat.com> tuntap: accept an array of XDP buffs through sendmsg()
This patch implement TUN_MSG_PTR msg_control type. This type allows
the caller to pass an array of XDP buffs to tuntap through ptr field
of the tun_msg_control. If an XDP program is attached, tuntap can run
XDP program directly. If not, tuntap will build skb and do a fast
receiving since part of the work has been done by vhost_net.
This will avoid lots of indirect calls thus improves the icache
utilization and allows to do XDP batched flushing when doing XDP
redirection.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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