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As multi-queue nics were commonly used for high-end servers, current single queue based tap can not satisfy the requirement of scaling guest network performance as the numbers of vcpus increase. So the following series implements multiple queue support in tun/tap. In order to take advantages of this, a multi-queue capable driver and qemu were also needed. I just rebase the latest version of

As multi-queue nics were commonly used for high-end servers, current single queue based tap can not satisfy the requirement of scaling guest network performance as the numbers of vcpus increase. So the following series implements multiple queue support in tun/tap. In order to take advantages of this, a multi-queue capable driver and qemu were also needed. I just rebase the latest version of

...; to virtqueue patch #3: virtio_net driver changes patch #4: vhost_net changes patch #5: Implement find_vqs_irq() patch #6: Convert virtio_net driver to use find_vqs_irq() Changes from rev2: Michael: ------- 1. Added functions to handle setting RX/TX/CTRL vq's. 2. num_queue_pairs instead of numtxqs. 3. Experimental support for fewer irq's in find_vqs. Rusty: ------ 4. Cleaned up some existing "while (1)". 5. rvq/svq and rx_sg/tx_sg changed to vq and sg respectively. 6. Cleaned up some "#if 1" code. Issue when using patch5: ------------------------- The new API is...

...; to virtqueue patch #3: virtio_net driver changes patch #4: vhost_net changes patch #5: Implement find_vqs_irq() patch #6: Convert virtio_net driver to use find_vqs_irq() Changes from rev2: Michael: ------- 1. Added functions to handle setting RX/TX/CTRL vq's. 2. num_queue_pairs instead of numtxqs. 3. Experimental support for fewer irq's in find_vqs. Rusty: ------ 4. Cleaned up some existing "while (1)". 5. rvq/svq and rx_sg/tx_sg changed to vq and sg respectively. 6. Cleaned up some "#if 1" code. Issue when using patch5: ------------------------- The new API is...