Hello Jon, No strong opinion on my side, but I'd just like to notice that there might be cases where multiple interfaces, in linux, have the same name, if they are in different network namespaces. VPP could literally control the back-end of thousands of containers' interfaces, all called eth0.
I know this is a rather specific use-case, so I understand it might be helpful to change the default, but don't make the assumption that linux interface names are unique. - Pierre > Le 23 mars 2017 à 20:55, Jon Loeliger <j...@netgate.com> a écrit : > > Guys, > > Why do tap interfaces use the name "tap-%d" internally? The user has > given an actual name (that corresponds to the underlying Linux tap name), > and yet VPP makes up a non-correlatable different name in the form "tap-%d" > by making up some number and assigning it to the IF. > > This issue is precisely the same problem that loopback IF names had, > and for which I submitted a patch to at least allow deterministically > predictable > IF names for user-assigned names on loopbacks. > > Later, there is some form of ability to "renumber" tap interfaces. Will this > affect the numbering of the IF names the user sees? > > Specifically, I'm wondering if we can somehow unify the tap name prefix > with the other interface prefixing styles in a more standard, cohesive and > predictable way. In the case of tap IFs, having VPP instead at least use > the name "tap-%s", formatted with the user-supplied name would make > it predictable and somewhat similar to the other IF types. > > I *think* this table summarizes the current state of IF names for many > of the interface types. > > Thanks, > jdl > > > > DPDK: > User says : TenGigabitEthernet6/0/0 > VPP uses : TenGigabitEthernet6/0/0 > Linux uses: <doesn't see it> > > Loopback: > User says : <n> - for "create" and "delete" commands > VPP uses : loop<n> - for any other reference to the IF > Linux : <doesn't see it> > > Host AF_PACKET > User says : <name> - for "create" and "delete" commands > VPP uses : host-<name> - for any other reference to the IF > Linux uses: <name> > Note: Leftover(?) use of "veth" in all VPP Wiki pages still? > > Tap: > User says : <name> - for "create" and "delete" commands > VPP uses : tap-<n> - for any other reference to the IF > Linux uses: <name> > Note: No relationship between <name> and <n> > > netmap: > User says : <name> - for "create" and "delete" commands > VPP uses : netmap-<name> - for any other reference to the IF > Linux uses: <name> > > _______________________________________________ > vpp-dev mailing list > vpp-dev@lists.fd.io > https://lists.fd.io/mailman/listinfo/vpp-dev _______________________________________________ vpp-dev mailing list vpp-dev@lists.fd.io https://lists.fd.io/mailman/listinfo/vpp-dev
