From: Ming Lei <ming.lei@xxxxxxxxxxxxx> Date: Thu, 8 Aug 2013 21:48:21 +0800 > This patchset allows drivers to pass sg buffers which size can't be divided > by max packet size of endpoint if the host controllers(such ax xHCI) support > this kind of sg buffers. > > Previously we added check[1] on the situation and don't allow these sg buffers > passed to USB HCD, looks the check is too strict to make use of new feature of > new hardware(xHCI) for some applications(such as network stack) which can't > provide this kind of sg buffers to usbnet driver, so the patch looses the check > in case that the host controller supports it. > > Patch 3/4 implements DMA SG on usbnet driver, and patch 4/4 uses it on ax88179_178a > USB3 NIC for supporting TSO, so both CPU utilization and tx throughput can be > improved with TSO and DMA SG in case of the USB NIC is attached to xHCI controller. > > This patchset depends on both net-next and usb-next tree, so hope David and Greg > to figure out one elegent way to merge it. Greg feel free to merge this in via your USB tree with my: Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
