From: David Awogbemila <awogbem...@google.com> Date: Mon, 7 Dec 2020 14:45:22 -0800
> Patchset description: > This patchset introduces "raw addressing" mode to the GVE driver. > Previously (in "queue_page_list" or "qpl" mode), the driver would > pre-allocate and dma_map buffers to be used on egress and ingress. > On egress, it would copy data from the skb provided to the > pre-allocated buffers - this was expensive. > In raw addressing mode, the driver can avoid this copy and simply > dma_map the skb's data so that the NIC can use it. > On ingress, the driver passes buffers up to the networking stack and > then frees and reallocates buffers when necessary instead of using > skb_copy_to_linear_data. > Patch 3 separates the page refcount tracking mechanism > into a function gve_rx_can_recycle_buffer which uses get_page - this will > be changed in a future patch to eliminate the use of get_page in tracking > page refcounts. > > Changes from v9: > Patch 4: Use u64, not u32 for new tx stat counters. Series applied, thanks.
