On Thu, 23 Feb 2017 18:07:07 -0700 David Ahern <d...@cumulusnetworks.com> wrote:
> On 2/23/17 5:30 PM, Stephen Hemminger wrote: > > On Thu, 23 Feb 2017 16:39:52 -0700 > > David Ahern <d...@cumulusnetworks.com> wrote: > > > >> On 2/23/17 12:50 PM, Stephen Hemminger wrote: > >>> Some use cases create Linux networking devices which are not intended for > >>> use > >>> by normal networking. This is an enhancement to ip command to hide network > >>> devices starting with period (like files in normal directory). > >>> Interfaces whose > >>> name start with "." are not shown by default, and the -a (or -all) flag > >>> must > >>> be used to show these devices. > >> > >> Agree that some devices need to be hidden by default -- not just from > >> users but also other processes. > >> > >> This solution is very narrow, only affecting iproute2 users. Any other > >> programs that use netlink or /proc files will continue to see those > >> devices. > > > > I want solution that works broadly. And this works for sysfs already. > > for 'ls' maybe, but not general walking of /sys. It does not hide > devices from snmpd, from ifconfig, etc., etc. > > > >> I started a patch a year ago that allows devices to marked as invisible > >> (attribute can be toggled at any time). Invisible devices do not show up > >> in netlink dumps, proc files or notifications. Netlink dumps can request > >> invisible devices to be included in a link dump. While it is more > >> intrusive, it is also more complete covering all of the paths in which > >> the device is shows up. > >> > >> Also, changing the default behavior for iproute2 could break existing > >> users that have such device names. > > > > I am less worried about this. The only people using . in name already > > are probably Brocade, and they have similar thing in CLI to hide these > > devices. > > > seems like a big assumption. Need a solution now, not something that requires kernel and command changes.
