On Mon, Jun 25, 2007 at 10:26:37AM -0500, Brian King wrote: > 1. The add_inbuf interface passes an sg list. This causes problems for > ibmveth since its rx buffers cannot be scatterlists. > 2. The user of this API does not have access to the sk_buf. This causes > issues for ibmveth since it needs to reserve the first 8 bytes of the > rx buffer for use by the firmware. It currently uses skb_reserve to do this. > > Would it be simpler to just pass an sk_buf rather than the scatterlist > on these interfaces for virtio_net users? It probably should pass the sk_buff. Then again the network layer really should be using struct scaterrlist for skb fragments - on a lot of iommu a dma_map_sg is a lot more efficient than a lot of dma_map_page calls, not to mention the benefit of a common data structure for things like network attached storage protocols that have to talk to both worlds. And yes, this is getting a little out of scope for the virtualization discussion. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
