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authorWilliam Tu <u9012063@gmail.com>2016-06-20 17:26:17 +0300
committerDavid S. Miller <davem@davemloft.net>2016-06-22 23:34:39 +0300
commitb95e5928fcc76d156352570858abdea7b2628efd (patch)
treea1957ca55d8e3a9d49af276d1b347340de0256c7 /net/can
parent904632a224b2ea39920e526cdc93565aaf1fb43e (diff)
downloadlinux-b95e5928fcc76d156352570858abdea7b2628efd.tar.xz
openvswitch: Add packet len info to upcall.
The commit f2a4d086ed4c ("openvswitch: Add packet truncation support.") introduces packet truncation before sending to userspace upcall receiver. This patch passes up the skb->len before truncation so that the upcall receiver knows the original packet size. Potentially this will be used by sFlow, where OVS translates sFlow config header=N to a sample action, truncating packet to N byte in kernel datapath. Thus, only N bytes instead of full-packet size is copied from kernel to userspace, saving the kernel-to-userspace bandwidth. Signed-off-by: William Tu <u9012063@gmail.com> Cc: Pravin Shelar <pshelar@nicira.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can')
0 files changed, 0 insertions, 0 deletions