X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fvnet_nic.c;h=ff039e2a735b3114584814ae149b01acdf756895;hb=35a7784f058e9f6948e1ec455ce2c6c3d467330b;hp=7a7dac01c91c7a4bc6083e7ac2388c362202a426;hpb=abe79f30c8babe9d9e3989cf4a61ae4f3b5ce7e9;p=palacios.git diff --git a/palacios/src/devices/vnet_nic.c b/palacios/src/devices/vnet_nic.c index 7a7dac0..ff039e2 100644 --- a/palacios/src/devices/vnet_nic.c +++ b/palacios/src/devices/vnet_nic.c @@ -7,8 +7,8 @@ * 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 + * Copyright (c) 2010, Lei Xia + * Copyright (c) 2010, The V3VEE Project * All rights reserved. * * Author: Lei Xia @@ -40,8 +40,24 @@ struct vnet_nic_state { int vnet_dev_id; }; +/* called by frontend device, + * tell the VNET can start sending pkt to it */ +static void start_rx(void *private_data){ + struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; + + v3_vnet_enable_device(vnetnic->vnet_dev_id); +} + +/* called by frontend device, + * tell the VNET stop sending pkt to it */ +static void stop_rx(void *private_data){ + struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; + + v3_vnet_disable_device(vnetnic->vnet_dev_id); +} -static int vnet_send(uint8_t * buf, uint32_t len, void * private_data, struct vm_device *dest_dev){ +/* called by frontend, send pkt to VNET */ +static int vnet_nic_send(uint8_t * buf, uint32_t len, void * private_data, struct vm_device *dest_dev){ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; struct v3_vnet_pkt pkt; @@ -58,39 +74,55 @@ static int vnet_send(uint8_t * buf, uint32_t len, void * private_data, struct vm v3_hexdump(buf, len, NULL, 0); } #endif -/* - v3_vnet_rx(buf, len, vnetnic->vnet_dev_id, LINK_INTERFACE); - - //if on the dom0 core, interrupt the domU core to poll pkts - //otherwise, call the polling directly - int cpu = V3_Get_CPU(); - cpu = (cpu == 0)?1:0; - v3_interrupt_cpu(vnetnic->vm, cpu, V3_VNET_POLLING_VECTOR); - */ - - v3_vnet_send_pkt(&pkt, NULL); - return 0; + return v3_vnet_send_pkt(&pkt, NULL);; } + +/* called by VNET, + * send pkt to frontend device */ static int virtio_input(struct v3_vm_info *info, struct v3_vnet_pkt * pkt, void * private_data){ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; - PrintDebug("Vnet-nic: In input: vnet_nic state %p\n", vnetnic); + return vnetnic->net_ops.recv(pkt->data, + pkt->size, + vnetnic->net_ops.frontend_data); +} - return vnetnic->net_ops.recv(pkt->data, pkt->size, vnetnic->net_ops.frontend_data); +/* called by VNET, + * tell frontend device to poll data from guest */ +static void virtio_poll(struct v3_vm_info *info, void * private_data){ + struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; + + vnetnic->net_ops.poll(info, vnetnic->net_ops.frontend_data); } -static int register_to_vnet(struct v3_vm_info * vm, - struct vnet_nic_state *vnet_nic, - char *dev_name, - uchar_t mac[6]) { - - PrintDebug("Vnet-nic: register Vnet-nic device %s, state %p to VNET\n", dev_name, vnet_nic); - - return v3_vnet_add_dev(vm, mac, virtio_input, (void *)vnet_nic); +/* called by VNET, from different processor */ +static void virtio_poll_xcall(void *data){ + struct v3_vnet_dev_xcall_args *args = (struct v3_vnet_dev_xcall_args *)data; + struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)args->private_data; + + if(args->vm == vnetnic->vm) /*only do polling on the same Virtual Machine */ + virtio_poll(args->vm, args->private_data); +} + +/* called by VNET, + * tell the frontend to start sending pkt to VNET*/ +static void start_tx(void *private_data){ + struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; + + vnetnic->net_ops.start_tx(vnetnic->net_ops.frontend_data); +} + +/* called by VNET + * tell the frontend device to stop sending pkt to VNET*/ +static void stop_tx(void *private_data){ + struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data; + + vnetnic->net_ops.stop_tx(vnetnic->net_ops.frontend_data); } + static int vnet_nic_free(struct vm_device * dev) { return 0; } @@ -102,6 +134,25 @@ static struct v3_device_ops dev_ops = { .stop = NULL, }; +static struct v3_vnet_dev_ops vnet_dev_ops = { + .input = virtio_input, + .poll = virtio_poll, + .poll_xcall = virtio_poll_xcall, + .start_tx = start_tx, + .stop_tx = stop_tx, +}; + + +static int register_to_vnet(struct v3_vm_info * vm, + struct vnet_nic_state *vnet_nic, + char *dev_name, + uchar_t mac[6]) { + + PrintDebug("Vnet-nic: register Vnet-nic device %s, state %p to VNET\n", dev_name, vnet_nic); + + return v3_vnet_add_dev(vm, mac, &vnet_dev_ops, (void *)vnet_nic); +} + static int str2mac(char *macstr, char mac[6]){ char hex[2], *s = macstr; @@ -144,7 +195,9 @@ static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { return -1; } - vnetnic->net_ops.send = vnet_send; + vnetnic->net_ops.send = vnet_nic_send; + vnetnic->net_ops.start_rx = start_rx; + vnetnic->net_ops.stop_rx = stop_rx; memcpy(vnetnic->mac, mac, 6); vnetnic->vm = vm; @@ -163,11 +216,12 @@ static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { } vnetnic->vnet_dev_id = vnet_dev_id; - PrintDebug("Vnet-nic device %s (mac: %s, %ld) registered to VNET\n", name, macstr, *((ulong_t *)vnetnic->mac)); + PrintDebug("Vnet-nic device %s (mac: %s, %ld) registered to VNET\n", + name, macstr, *((ulong_t *)vnetnic->mac)); //for temporary hack for vnet bridge test -#if 1 +#if 0 { uchar_t zeromac[6] = {0,0,0,0,0,0}; @@ -200,7 +254,7 @@ static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { #endif //for temporary hack for Linux bridge (w/o encapuslation) test -#if 0 +#if 1 { static int vnet_nic_guestid = -1; static int vnet_nic_dom0 = -1; @@ -211,7 +265,7 @@ static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { } if (!strcmp(name, "vnet_nic_dom0")){ vnet_nic_dom0 = vnet_dev_id; - } + } if(vnet_nic_guestid != -1 && vnet_nic_dom0 !=-1){ struct v3_vnet_route route;