On Fri, 1 Sep 2017 18:39:06 +0200 (CEST) Michal Kubecek <mkube...@suse.cz> wrote:
> Two of our customers recently encountered problems with processing of large > messages produced by kernel in response to "ip link show" for NICs with > many (120-128) virtual functions. While some of them have been already > addressed in recent versions of iproute2, some still persist. > > Patch 1 adds check to handle the case when a message fits into the > buffer in rtnl_talk() but not into the buffer in iplink_get(). > > Patch 2 increases the buffer size in iplink_get() to suffice even for > NICs with 128 VFs. > > Note: after applying patch 2, patch 1 seems useless as both buffers have > the same size so that the check cannot actually trigger. However, as we > cannot guarantee they will always stay the same, I believe the check > should still be added. > > Michal Kubecek (2): > iplink: check for message truncation in iplink_get() > iplink: double the buffer size also in iplink_get() > > ip/iplink.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > Looks like the best set of solutions to the kernel side API issue. Applied, thanks Michal.
