search for: allow_zero_num_buffers

Displaying 4 results from an estimated 4 matches for "allow_zero_num_buffers".

2017 Mar 01
1
[virtio-dev] packed ring layout proposal v2
...struct sk_buff *curr_skb = head_skb; 373 374 if (unlikely(!curr_skb)) 375 goto err_skb; ==> 376 while (--num_buf) { That means, if we want to do that, it needs an extra feature flag (either a global feature flag or a desc flag), something like ALLOW_ZERO_NUM_BUFFERS. Or even, make it allowable in virtio 1.1 (virtio 0.95/1.0 won't benifit from it though). Does it make sense to you? > Make each buffer > MTU sized and it'll fit without merging. Linux used not to, it only > started doing this to save memory aggressively. I don't think >...
2017 Mar 01
2
[virtio-dev] packed ring layout proposal v2
On Tue, Feb 28, 2017 at 01:02:18PM +0800, Yuanhan Liu wrote: > On Wed, Feb 08, 2017 at 05:20:14AM +0200, Michael S. Tsirkin wrote: > > This is an update from v1 version. > > Changes: > > - update event suppression mechanism > > - separate options for indirect and direct s/g > > - lots of new features > > > > --- > > > > Performance
2017 Mar 01
2
[virtio-dev] packed ring layout proposal v2
On Tue, Feb 28, 2017 at 01:02:18PM +0800, Yuanhan Liu wrote: > On Wed, Feb 08, 2017 at 05:20:14AM +0200, Michael S. Tsirkin wrote: > > This is an update from v1 version. > > Changes: > > - update event suppression mechanism > > - separate options for indirect and direct s/g > > - lots of new features > > > > --- > > > > Performance
2017 Mar 01
0
[virtio-dev] packed ring layout proposal v2
...skb; > 373 > 374 if (unlikely(!curr_skb)) > 375 goto err_skb; > ==> 376 while (--num_buf) { > > That means, if we want to do that, it needs an extra feature flag > (either a global feature flag or a desc flag), something like > ALLOW_ZERO_NUM_BUFFERS. Or even, make it allowable in virtio 1.1 > (virtio 0.95/1.0 won't benifit from it though). > > Does it make sense to you? Right and then we could use a descriptor flag "header is all 0s". For virtio 1.0 we could put these in the used ring instead. > > > Make eac...