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virtcontainers: network: Use multiqueue flag only when appropriate

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The multiqueue flag associated with the TUNTAP network device cannot
be used if the number of queues indicates 0. When 0, this means the
multiqueue is not supported, and we cannot use the according flag.

Fixes #1051

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2018-12-18 11:06:06 -08:00
parent 5d91edd695
commit 0f1fde498d
1 changed files with 5 additions and 1 deletions
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6
virtcontainers/network.go
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@ -407,11 +407,15 @@ func createLink(netHandle *netlink.Handle, name string, expectedLink netlink.Lin
MulticastSnooping: expectedLink.(*netlink.Bridge).MulticastSnooping,
}
case (&netlink.Tuntap{}).Type():
flags := netlink.TUNTAP_VNET_HDR
if queues > 0 {
flags |= netlink.TUNTAP_MULTI_QUEUE_DEFAULTS
}
newLink = &netlink.Tuntap{
LinkAttrs: netlink.LinkAttrs{Name: name},
Mode: netlink.TUNTAP_MODE_TAP,
Queues: queues,
Flags: netlink.TUNTAP_MULTI_QUEUE_DEFAULTS | netlink.TUNTAP_VNET_HDR,
Flags: flags,
}
case (&netlink.Macvtap{}).Type():
qlen := expectedLink.Attrs().TxQLen