X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fvnet_nic.c;h=ff039e2a735b3114584814ae149b01acdf756895;hb=4c4382c3fa7e7e87c260b6bb473220d0081ca1d5;hp=479593b97293906adb9d6f6e10a6298e6d72b254;hpb=acef389a3165a636b80a2efbd41f86c0226be78d;p=palacios.git diff --git a/palacios/src/devices/vnet_nic.c b/palacios/src/devices/vnet_nic.c index 479593b..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 @@ -40,11 +40,27 @@ 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; -static int vnet_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; + 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); +} + +/* 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; pkt.size = len; pkt.src_type = LINK_INTERFACE; pkt.src_id = vnetnic->vnet_dev_id; @@ -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); +} + +/* 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; - return vnetnic->net_ops.recv(pkt->data, pkt->size, vnetnic->net_ops.frontend_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, - uint8_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; } @@ -102,25 +134,36 @@ 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 str2mac(char * macstr, uint8_t mac[6]){ - uint8_t hex[2]; - int i = 0; - char * s = macstr; - while (s) { - memcpy(hex, s, 2); - mac[i++] = (char)atox(hex); +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); +} - if (i == 6) { - return 0; - } - s = strchr(s, ':'); +static int str2mac(char *macstr, char mac[6]){ + char hex[2], *s = macstr; + int i = 0; - if (s) { - s++; - } + while(s){ + memcpy(hex, s, 2); + mac[i++] = (char)atox(hex); + if (i == 6) return 0; + s=strchr(s, ':'); + if(s) s++; } return -1; @@ -128,53 +171,129 @@ static int str2mac(char * macstr, uint8_t mac[6]){ static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { struct vnet_nic_state * vnetnic = NULL; - char * dev_id = v3_cfg_val(cfg, "ID"); + char * name = v3_cfg_val(cfg, "name"); char * macstr = NULL; - int vnet_dev_id = 0; - v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend"); + char mac[6]; + int vnet_dev_id; + v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend"); macstr = v3_cfg_val(frontend_cfg, "mac"); if (macstr == NULL) { - PrintDebug("Vnet-nic configuration error: No Mac specified\n"); - return -1; + PrintDebug("Vnet-nic: No Mac specified\n"); + } else { + str2mac(macstr, mac); } vnetnic = (struct vnet_nic_state *)V3_Malloc(sizeof(struct vnet_nic_state)); memset(vnetnic, 0, sizeof(struct vnet_nic_state)); - struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, vnetnic); + 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", dev_id); + PrintError("Could not attach device %s\n", name); return -1; } - - - vnetnic->net_ops.send = vnet_send; - str2mac(macstr, vnetnic->mac); + 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; if (v3_dev_connect_net(vm, v3_cfg_val(frontend_cfg, "tag"), &(vnetnic->net_ops), frontend_cfg, vnetnic) == -1) { PrintError("Could not connect %s to frontend %s\n", - dev_id, v3_cfg_val(frontend_cfg, "tag")); + name, v3_cfg_val(frontend_cfg, "tag")); return -1; } PrintDebug("Vnet-nic: Connect %s to frontend %s\n", - dev_id, v3_cfg_val(frontend_cfg, "tag")); + name, v3_cfg_val(frontend_cfg, "tag")); - if ((vnet_dev_id = register_to_vnet(vm, vnetnic, dev_id, vnetnic->mac)) == -1) { - PrintError("Vnet-nic device %s (mac: %s) fails to registered to VNET\n", dev_id, macstr); - return -1; + if ((vnet_dev_id = register_to_vnet(vm, vnetnic, name, vnetnic->mac)) == -1) { + PrintError("Vnet-nic device %s (mac: %s) fails to registered to VNET\n", name, macstr); } - vnetnic->vnet_dev_id = vnet_dev_id; - PrintDebug("Vnet-nic device %s (mac: %s, %ld) registered to VNET\n", dev_id, macstr, *((uint32_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 0 + { + uchar_t zeromac[6] = {0,0,0,0,0,0}; + + if(!strcmp(name, "vnet_nic")){ + struct v3_vnet_route route; + + route.dst_id = vnet_dev_id; + route.dst_type = LINK_INTERFACE; + route.src_id = 0; + route.src_type = LINK_EDGE; + memcpy(route.dst_mac, zeromac, 6); + route.dst_mac_qual = MAC_ANY; + memcpy(route.src_mac, zeromac, 6); + route.src_mac_qual = MAC_ANY; + v3_vnet_add_route(route); + + + route.dst_id = 0; + route.dst_type = LINK_EDGE; + route.src_id = vnet_dev_id; + route.src_type = LINK_INTERFACE; + memcpy(route.dst_mac, zeromac, 6); + route.dst_mac_qual = MAC_ANY; + memcpy(route.src_mac, zeromac, 6); + route.src_mac_qual = MAC_ANY; + + v3_vnet_add_route(route); + } + } +#endif + +//for temporary hack for Linux bridge (w/o encapuslation) test +#if 1 + { + static int vnet_nic_guestid = -1; + static int vnet_nic_dom0 = -1; + uchar_t zeromac[6] = {0,0,0,0,0,0}; + + if(!strcmp(name, "vnet_nic")){ //domu + vnet_nic_guestid = vnet_dev_id; + } + 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; + + route.src_id = vnet_nic_guestid; + route.src_type = LINK_INTERFACE; + route.dst_id = vnet_nic_dom0; + route.dst_type = LINK_INTERFACE; + memcpy(route.dst_mac, zeromac, 6); + route.dst_mac_qual = MAC_ANY; + memcpy(route.src_mac, zeromac, 6); + route.src_mac_qual = MAC_ANY; + v3_vnet_add_route(route); + + + route.src_id = vnet_nic_dom0; + route.src_type = LINK_INTERFACE; + route.dst_id = vnet_nic_guestid; + route.dst_type = LINK_INTERFACE; + memcpy(route.dst_mac, zeromac, 6); + route.dst_mac_qual = MAC_ANY; + memcpy(route.src_mac, zeromac, 6); + route.src_mac_qual = MAC_ANY; + + v3_vnet_add_route(route); + } + } +#endif return 0; }