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docs: Update documentation related to multiqueue network

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Just updating the documentation regarding the pre-creation of a tap
interface supporting multiqueue, by adding what the cloud-hypervisor
--net parameter should look like.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
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Sebastien Boeuf 2020-02-12 14:23:34 +01:00 committed by Rob Bradford
parent 4dd16c2686
commit 53481aabe5
1 changed files with 5 additions and 0 deletions
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docs/networking.md
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@ -51,6 +51,11 @@ If the tap device is pre-created on host before guest boot up. To use multiple q
[root@localhost ~]# ip tuntap add name ich0 mode tap multi_queue
```
And the `--net` device should specify support for multiple queues. `num_queues` must be a multiple of 2 starting at least from 4 since multiple queues really means multiple queue pairs. We need at least 2 pairs for this configuration to be correct:
```bash
--net tap=ich0,mac=a4:a1:c2:00:00:01,ip=192.168.4.2,mask=255.255.255.0,num_queues=4,queue_size=256
```
## Configure the tap devices