From: Lei Xia Date: Tue, 16 Feb 2010 18:08:17 +0000 (-0600) Subject: Added backend device for Virtio NIC connected with VNET X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=commitdiff_plain;h=73f9a9166e3588c28204d5c053a48cec8e9a5ba2;p=palacios.git Added backend device for Virtio NIC connected with VNET --- diff --git a/palacios/src/devices/vnet_nic.c b/palacios/src/devices/vnet_nic.c new file mode 100644 index 0000000..ae1238f --- /dev/null +++ b/palacios/src/devices/vnet_nic.c @@ -0,0 +1,180 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2008, Lei Xia + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Lei Xia + * + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ +//backend device for Virtio NIC + +#include +#include +#include +#include +#include +#include + +struct vnet_nic_state { + char mac[6]; + + +}; + +//used when virtio_nic get a packet from guest and send it to the backend +// send packet to all of the virtio nic devices other than the sender +static int send(uint8_t * buf, uint32_t len, void * private_data, struct vm_device *dest_dev){ + PrintDebug("Virito NIC: In vnet_send: guest net state %p\n", private_data); + + v3_vnet_send_rawpkt(buf, len, private_data); + return 0; +} + +static int receive(uint8_t * buf, uint32_t count, void * private_data, struct vm_device *src_dev){ + + return 0; +} + + +static struct v3_dev_net_ops net_ops = { + .send = send, + .receive = receive, +}; + + +#if 0 +static int input(struct v3_vm_info *info, uchar_t * buf, uint_t len, void * private_data){ + PrintDebug("Virito NIC: In virtio_input: guest net state %p\n", private_data); + + return __virtio_dev_send(buf, len, private_data); +} + + +//register a virtio device to the vnet as backend +void register_to_vnet(struct vm_device *dev, + char *dev_name, + uchar_t mac[6]){ + struct virtio_net_state * net_state; + struct virtio_dev_state *virtio_state = (struct virtio_dev_state *)dev->private_data; + uchar_t tapmac[6] = {0x00,0x02,0x55,0x67,0x42,0x39}; //for Intel-VT test HW + //uchar_t tapmac[6] = {0x6e,0xa8,0x75,0xf4,0x82,0x95}; + uchar_t dstmac[6] = {0xff,0xff,0xff,0xff,0xff,0xff}; + uchar_t zeromac[6] = {0,0,0,0,0,0}; + + + net_state = (struct virtio_net_state *)V3_Malloc(sizeof(struct virtio_net_state)); + memset(net_state, 0, sizeof(struct virtio_net_state)); + net_state->net_ops = (struct v3_dev_net_ops *)V3_Malloc(sizeof(struct v3_dev_net_ops)); + net_state->net_ops->send = &vnet_send; + net_state->net_ops->receive = &vnet_receive; + net_state->dev = dev; + + register_dev(virtio_state, net_state); + + PrintDebug("Virtio NIC register Device %s: queue size: %d, %d\n", dev->name, + net_state->rx_vq.queue_size, net_state->tx_vq.queue_size); + PrintDebug("Virtio NIC: connect virtio device %s, state %p, to vnet\n", dev->name, net_state); + + int idx = vnet_register_device(dev, dev_name, mac, &virtio_input, net_state); + //vnet_add_route_entry(zeromac, dstmac, MAC_ANY, MAC_NONE, idx, LINK_INTERFACE, -1, LINK_INTERFACE); + if (!strcmp(dev_name, "net_virtiodom0")){ + vnet_add_route_entry(zeromac, tapmac, MAC_ANY, MAC_NONE, idx, LINK_INTERFACE, -1, LINK_INTERFACE); + vnet_add_route_entry(zeromac, dstmac, MAC_ANY, MAC_NONE, idx, LINK_INTERFACE, -1, LINK_INTERFACE); + } + if (!strcmp(dev_name, "net_virtio")) + vnet_add_route_entry(tapmac, zeromac, MAC_NONE, MAC_ANY, idx, LINK_INTERFACE, -1, LINK_INTERFACE); + + + v3_vnet_add_node(dev_name, mac, input, priv_data); + struct v3_vnet_route route; + //add default route + memset(&route, 0, sizeof(struct v3_vnet_route)); + memcpy(&route.dest_mac, mac, 6); + route.src_mac_qual = MAC_ANY; + route.dest_mac_qual = MAC_NONE; + route.link_idx = idx; + route.link_type = LINK_EDGE; + route.src_link_idx = -1; + route.src_type = LINK_ANY; + v3_vnet_add_route(&route); + + char mac + memset(&route, 0, sizeof(struct v3_vnet_route)); + memcpy(&route.dest_mac, mac, 6); + route.src_mac_qual = MAC_ANY; + route.dest_mac_qual = MAC_NONE; + route.link_idx = idx; + route.link_type = LINK_EDGE; + route.src_link_idx = -1; + route.src_type = LINK_ANY; + v3_vnet_add_route(&route); + +} + + +/* + *called in svm/vmx handler + *iteative handled the unsent packet in incoming packet queues for + *all virtio nic devices in this guest + */ +int v3_vnetnic_pktprocess(struct guest_info * info) +{ + + return 0; +} + +#endif + +static int vnet_nic_free(struct vm_device * dev) { + return 0; +} + +static struct v3_device_ops dev_ops = { + .free = vnet_nic_free, + .reset = NULL, + .start = NULL, + .stop = NULL, +}; + +static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + struct vnet_nic_state * vnetnic = NULL; + char * name = v3_cfg_val(cfg, "name"); + + v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend"); + + vnetnic = (struct vnet_nic_state *)V3_Malloc(sizeof(struct vnet_nic_state)); + memset(vnetnic, 0, sizeof(struct vnet_nic_state)); + + + PrintDebug("Registering vnet_nic device at\n"); + + struct vm_device * dev = v3_allocate_device(name, &dev_ops, vnetnic); + + if (v3_attach_device(vm, dev) == -1) { + PrintError("Could not attach device %s\n", name); + return -1; + } + + if (v3_dev_connect_net(vm, v3_cfg_val(frontend_cfg, "tag"), + &net_ops, frontend_cfg, vnetnic) == -1) { + PrintError("Could not connect %s to frontend %s\n", + name, v3_cfg_val(frontend_cfg, "tag")); + return -1; + } + + + return 0; +} + +device_register("VNET_NIC", vnet_nic_init)