From: zhangliping <zhanglkk1...@163.com> Date: Sat, 25 Nov 2017 22:02:12 +0800
> From: zhangliping <zhanglipin...@baidu.com> > > If we want to add a datapath flow, which has more than 500 vxlan outputs' > action, we will get the following error reports: > openvswitch: netlink: Flow action size 32832 bytes exceeds max > openvswitch: netlink: Flow action size 32832 bytes exceeds max > openvswitch: netlink: Actions may not be safe on all matching packets > ... ... > > It seems that we can simply enlarge the MAX_ACTIONS_BUFSIZE to fix it, but > this is not the root cause. For example, for a vxlan output action, we need > about 60 bytes for the nlattr, but after it is converted to the flow > action, it only occupies 24 bytes. This means that we can still support > more than 1000 vxlan output actions for a single datapath flow under the > the current 32k max limitation. > > So even if the nla_len(attr) is larger than MAX_ACTIONS_BUFSIZE, we > shouldn't report EINVAL and keep it move on, as the judgement can be > done by the reserve_sfa_size. > > Signed-off-by: zhangliping <zhanglipin...@baidu.com> Applied, thanks.
