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net_util: Add multiple queue support for tap

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Add support to allow VMMs to open the same tap device many times, it will
create multiple file descriptors meanwhile.

Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
This commit is contained in:
Cathy Zhang
2020-01-10 00:03:24 +08:00
committed by Sebastien Boeuf
parent cf7e0cdf95
commit 4ab88a8173
3 changed files with 28 additions and 17 deletions
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2
vm-virtio/src/net_util.rs
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@@ -427,7 +427,7 @@ pub fn open_tap(ip_addr: Ipv4Addr, netmask: Ipv4Addr) -> Result<Tap> {
let vnet_hdr_size = vnet_hdr_len() as i32;
let flag = net_gen::TUN_F_CSUM | net_gen::TUN_F_UFO | net_gen::TUN_F_TSO4 | net_gen::TUN_F_TSO6;
let tap = Tap::new().map_err(Error::TapOpen)?;
let tap = Tap::new(1).map_err(Error::TapOpen)?;
tap.set_ip_addr(ip_addr).map_err(Error::TapSetIp)?;
tap.set_netmask(netmask).map_err(Error::TapSetNetmask)?;
tap.enable().map_err(Error::TapEnable)?;