X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=linux_module%2Fpalacios-vnet.c;h=d4f09b030f593df0e4286c387bb22bb792c01768;hb=471edd59ca70371e97cbad759e1710433f35990d;hp=3f6f899f7b6cfd332b15feb679139cd7806aa565;hpb=6198c62287d7a33cfade156f4405c82f0f2bae0a;p=palacios.git diff --git a/linux_module/palacios-vnet.c b/linux_module/palacios-vnet.c index 3f6f899..d4f09b0 100644 --- a/linux_module/palacios-vnet.c +++ b/linux_module/palacios-vnet.c @@ -1,1011 +1,223 @@ /* - Palacios VNET interface - (c) Lei Xia, 2010 + * Palacios VNET Host Hooks Implementations + * Lei Xia 2010 */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include +#include +#include +#include #include -#include - -#include +#include +#include +#include +#include + +#include +#include "palacios.h" +#include "mm.h" #include "palacios-vnet.h" +#include "linux-exts.h" -//#define DEBUG_VNET_BRIGE - -#define VNET_UDP_PORT 9000 - -struct palacios_vnet_route { - struct v3_vnet_route route; - - int route_idx; - - struct list_head node; -}; - - -struct vnet_link { - uint32_t dst_ip; - uint16_t dst_port; - - struct socket * sock; - struct sockaddr_in sock_addr; - - int link_idx; - - struct list_head node; -}; -struct palacios_vnet_state { - uint32_t num_routes; - uint32_t num_links; - struct list_head route_list; - struct list_head link_list; - struct socket * serv_sock; - struct sockaddr_in serv_addr; +static void host_kthread_sleep(long timeout){ + set_current_state(TASK_INTERRUPTIBLE); - /* The thread recving pkts from sockets. */ - struct task_struct * serv_thread; - spinlock_t lock; - - unsigned long pkt_sent, pkt_recv, pkt_drop, pkt_udp_recv, pkt_udp_send; -}; - - -static struct palacios_vnet_state vnet_state; - - -struct vnet_link * link_by_ip(uint32_t ip) { - struct vnet_link * link = NULL; - - list_for_each_entry(link, &(vnet_state.link_list), node) { - - if (link->dst_ip == ip) { - return link; - } + if(timeout <= 0){ + schedule(); + }else { + schedule_timeout(timeout); } - return NULL; + return; } -struct vnet_link * link_by_idx(int idx) { - struct vnet_link * link = NULL; - - list_for_each_entry(link, &(vnet_state.link_list), node) { - - if (link->link_idx == idx) { - return link; - } - } - return NULL; +static void host_kthread_wakeup(void * thread){ + struct task_struct * kthread = (struct task_struct *)thread; + + wake_up_process(kthread); } -struct palacios_vnet_route * route_by_idx(int idx) { - struct palacios_vnet_route * route = NULL; - - list_for_each_entry(route, &(vnet_state.route_list), node) { +static void host_kthread_stop(void * thread){ + struct task_struct * kthread = (struct task_struct *)thread; - if (route->route_idx == idx) { - return route; - } - } - - return NULL; + while (kthread_stop(kthread)==-EINTR) + ; } - -static int parse_mac_str(char * str, uint8_t * qual, uint8_t * mac) { - char * token; - - printk("Parsing MAC (%s)\n", str); - - *qual = MAC_NOSET; - if(strnicmp("any", str, strlen(str)) == 0){ - *qual = MAC_ANY; - return 0; - }else if(strnicmp("none", str, strlen(str)) == 0){ - *qual = MAC_NONE; - return 0; - }else{ - if (strstr(str, "-")) { - token = strsep(&str, "-"); - - if (strnicmp("not", token, strlen("not")) == 0) { - *qual = MAC_NOT; - } else { - printk("Invalid MAC String token (%s)\n", token); - return -1; - } - } - - if (strstr(str, ":")) { - int i = 0; - - if(*qual == MAC_NOSET){ - *qual = MAC_ADDR; - } - - for (i = 0; i < 6; i++) { - token = strsep(&str, ":"); - if (!token) { - printk("Invalid MAC String token (%s)\n", token); - return -1; - } - mac[i] = simple_strtol(token, &token, 16); - } - printk("MAC: %2x:%2x:%2x:%2x:%2x:%2x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); - - }else { - printk("Invalid MAC String token (%s)\n", token); - return -1; - } - - } - - return 0; +static int host_kthread_should_stop(void){ + return kthread_should_stop(); } -static int str2mac(char * str, uint8_t * mac){ - int i = 0; - char *hex = NULL; - - for (i = 0; i < ETH_ALEN; i++) { - hex = strsep(&str, ":"); - if (!hex) { - printk("Invalid MAC String token (%s)\n", str); - return -1; - } - mac[i] = simple_strtol(hex, &hex, 16); - } - - return 0; +static void host_udelay(unsigned long usecs){ + udelay(usecs); } -/* Format: - * add src-MAC dst-MAC dst-TYPE [dst-ID] src-TYPE [src-ID] - * - * src-MAC = dst-MAC = not-MAC|any|none|MAC - * dst-TYPE = edge|interface - * src-TYPE = edge|interface|any - * dst-ID = src-ID = IP|MAC - * MAC=xx:xx:xx:xx:xx:xx - * IP = xxx.xxx.xxx.xxx - */ -static int parse_route_str(char * str, struct v3_vnet_route * route) { - char * token = NULL; - struct vnet_link *link = NULL; - - // src MAC - token = strsep(&str, " "); - if (!token) { - return -1; - } - parse_mac_str(token, &(route->src_mac_qual), route->src_mac); - - // dst MAC - token = strsep(&str, " "); - if (!token) { - return -1; - } - parse_mac_str(token, &(route->dst_mac_qual), route->dst_mac); - // dst LINK type - token = strsep(&str, " "); - if (!token) { - return -1; - } - printk("dst type =(%s)\n", token); - - if (strnicmp("interface", token, strlen("interface")) == 0) { - route->dst_type = LINK_INTERFACE; - } else if (strnicmp("edge", token, strlen("edge")) == 0) { - route->dst_type = LINK_EDGE; - } else { - printk("Invalid Destination Link Type (%s)\n", token); - return -1; - } - // dst link - token = strsep(&str, " "); - if (!token) { - return -1; - } - printk("dst link ID=(%s)\n", token); - - // Figure out link here - if (route->dst_type == LINK_EDGE) { - uint32_t link_ip; - - // Figure out Link Here - if (in4_pton(token, strlen(token), (uint8_t *)&(link_ip), '\0', NULL) != 1) { - printk("Invalid Dst IP address (%s)\n", token); - return -EFAULT; - } - - link = link_by_ip(link_ip); - if (link != NULL){ - route->dst_id = link->link_idx; - }else{ - printk("can not find dst link %s\n", token); - return -1; - } - - printk("link_ip = %d, link_id = %d\n", link_ip, link->link_idx); - } else if (route->dst_type == LINK_INTERFACE) { - uint8_t mac[ETH_ALEN]; - - if(str2mac(token, mac) == -1){ - printk("wrong MAC format (%s)\n", token); - return -1; - } - - route->dst_id = v3_vnet_find_dev(mac); - if (route->dst_id == -1){ - printk("can not find dst device %s\n", token); - return -1; - } - } else { - printk("Unsupported dst link type\n"); - return -1; - } - route->src_id = -1; - route->src_type = -1; - // src LINK - token = strsep(&str, " "); - printk("SRC type = %s\n", token); +struct host_timer { + struct timer_list timer; + unsigned long interval; - if (!token) { - return -1; - } + int active; + void (* timer_fun)(void * private_data); + void * pri_data; +}; - if (strnicmp("interface", token, strlen("interface")) == 0) { - route->src_type = LINK_INTERFACE; - } else if (strnicmp("edge", token, strlen("edge")) == 0) { - route->src_type = LINK_EDGE; - } else if (strnicmp("any", token, strlen("any")) == 0) { - route->src_type = LINK_ANY; - } else { - printk("Invalid Src link type (%s)\n", token); - return -1; - } +void timeout_fn(unsigned long arg){ + struct host_timer * timer = (struct host_timer *)arg; - if (route->src_type == LINK_ANY) { - route->src_id = -1; - } else if (route->src_type == LINK_EDGE) { - uint32_t src_ip; - token = strsep(&str, " "); - - if (!token) { - return -1; - } - - // Figure out Link Here - if (in4_pton(token, strlen(token), (uint8_t *)&(src_ip), '\0', NULL) != 1) { - printk("Invalid SRC IP address (%s)\n", token); - return -EFAULT; - } - - link = link_by_ip(src_ip); - if (link != NULL){ - route->src_id = link->link_idx; - }else{ - printk("can not find src link %s\n", token); - return -1; - } - } else if(route->src_type == LINK_INTERFACE){ - uint8_t mac[ETH_ALEN]; + if(timer->active){ + timer->timer_fun(timer->pri_data); - if(str2mac(token, mac) == -1){ - printk("wrong MAC format (%s)\n", token); - return -1; - } - - route->src_id = v3_vnet_find_dev(mac); - if (route->src_id == -1){ - printk("can not find dst device %s\n", token); - return -1; - } - } else { - printk("Invalid link type\n"); - return -1; + mod_timer(&(timer->timer), timer->interval); } - - return 0; } +static void * +host_create_timer(unsigned long interval, + void (* timer_fun)(void * priv_data), + void * data){ + struct host_timer * timer = (struct host_timer *)palacios_alloc(sizeof(struct host_timer)); - - -static void * route_seq_start(struct seq_file * s, loff_t * pos) { - struct palacios_vnet_route * route_iter = NULL; - loff_t i = 0; - - - if (*pos >= vnet_state.num_routes) { - return NULL; - } - - list_for_each_entry(route_iter, &(vnet_state.route_list), node) { - - if (i == *pos) { - break; - } - - i++; - } - - return route_iter; -} - - -static void * link_seq_start(struct seq_file * s, loff_t * pos) { - struct vnet_link * link_iter = NULL; - loff_t i = 0; - - if (*pos >= vnet_state.num_links) { + if (!timer) { + ERROR("Unable to allocate timer in VNET\n"); return NULL; } - list_for_each_entry(link_iter, &(vnet_state.link_list), node) { + timer->interval = interval; + timer->timer_fun = timer_fun; + timer->pri_data = data; - if (i == *pos) { - break; - } + init_timer(&(timer->timer)); - i++; - } + timer->timer.data = (unsigned long)timer; + timer->timer.function = timeout_fn; + timer->timer.expires = interval; - return link_iter; + return timer; } +static void +host_start_timer(void * vnet_timer){ + struct host_timer * timer = (struct host_timer *)vnet_timer; - -static void * route_seq_next(struct seq_file * s, void * v, loff_t * pos) { - struct palacios_vnet_route * route_iter = NULL; - - route_iter = list_entry(((struct palacios_vnet_route *)v)->node.next, struct palacios_vnet_route, node); - - // Check if the list has looped - if (&(route_iter->node) == &(vnet_state.route_list)) { - return NULL; - } - - *pos += 1; - - return route_iter; + timer->active = 1; + add_timer(&(timer->timer)); } +static void +host_reset_timer(void * vnet_timer, unsigned long interval){ + struct host_timer * timer = (struct host_timer *)vnet_timer; -static void * link_seq_next(struct seq_file * s, void * v, loff_t * pos) { - struct vnet_link * link_iter = NULL; - - - link_iter = list_entry(((struct vnet_link *)v)->node.next, struct vnet_link, node); - - // Check if the list has looped - if (&(link_iter->node) == &(vnet_state.link_list)) { - return NULL; - } - - *pos += 1; - - return link_iter; + timer->interval = interval; } +static void +host_stop_timer(void * vnet_timer){ + struct host_timer * timer = (struct host_timer *)vnet_timer; -static void route_seq_stop(struct seq_file * s, void * v) { - printk("route_seq_stop\n"); - - return; + timer->active = 0; + del_timer(&(timer->timer)); } +static void +host_del_timer(void * vnet_timer){ + struct host_timer * timer = (struct host_timer *)vnet_timer; -static void link_seq_stop(struct seq_file * s, void * v) { - printk("link_seq_stop\n"); + del_timer(&(timer->timer)); - return; + palacios_free(timer); } -static int route_seq_show(struct seq_file * s, void * v) { - struct palacios_vnet_route * route_iter = v; - struct v3_vnet_route * route = &(route_iter->route); - - seq_printf(s, "%d:\t", route_iter->route_idx); - - seq_printf(s, "\nSrc:\t"); - switch (route->src_mac_qual) { - case MAC_ANY: - seq_printf(s, "any "); - break; - case MAC_NONE: - seq_printf(s, "none "); - break; - case MAC_NOT: - seq_printf(s, "not-%2x:%2x:%2x:%2x:%2x:%2x ", - route->src_mac[0], route->src_mac[1], route->src_mac[2], - route->src_mac[3], route->src_mac[4], route->src_mac[5]); - break; - default: - seq_printf(s, "%x:%x:%x:%x:%x:%x ", - route->src_mac[0], route->src_mac[1], route->src_mac[2], - route->src_mac[3], route->src_mac[4], route->src_mac[5]); - break; - } - - seq_printf(s, "\nDst:\t"); - switch (route->dst_mac_qual) { - case MAC_ANY: - seq_printf(s, "any "); - break; - case MAC_NONE: - seq_printf(s, "none "); - break; - case MAC_NOT: - seq_printf(s, "not-%x:%x:%x:%x:%x:%x ", - route->src_mac[0], route->src_mac[1], route->src_mac[2], - route->src_mac[3], route->src_mac[4], route->src_mac[5]); - break; - default: - seq_printf(s, "%x:%x:%x:%x:%x:%x ", - route->src_mac[0], route->src_mac[1], route->src_mac[2], - route->src_mac[3], route->src_mac[4], route->src_mac[5]); - break; - } - - seq_printf(s, "\nDst-Type:\t"); - switch (route->dst_type) { - case LINK_EDGE: { - struct vnet_link * link = (struct vnet_link *)link_by_idx(route->dst_id); - seq_printf(s, "EDGE %pI4", &link->dst_ip); - break; - } - case LINK_INTERFACE: { - seq_printf(s, "INTERFACE "); - seq_printf(s, "%d ", route->dst_id); - break; - } - default: - seq_printf(s, "Invalid Dst Link Type (%d) ", route->dst_type); - break; - } - - seq_printf(s, "\nSrc-Type:\t"); - switch (route->src_type) { - case LINK_EDGE: { - struct vnet_link * link = (struct vnet_link *)link_by_idx(route->src_id); - seq_printf(s, "EDGE %pI4", &link->dst_ip); - break; - } - case LINK_INTERFACE: { - seq_printf(s, "INTERFACE %d", route->src_id); - break; - } - case LINK_ANY: - seq_printf(s, "ANY"); - break; - default: - seq_printf(s, "Invalid Src Link Type (%d) ", route->src_type); - break; - } - - seq_printf(s, "\n"); - - return 0; +static void * +host_allocate_pages(int num_pages, unsigned int alignment, int node_id, int constraint) +{ + // allocates pages preferentially on the caller's node + return palacios_allocate_pages(num_pages, alignment, node_id, constraint); } -static int link_seq_show(struct seq_file * s, void * v) { - struct vnet_link * link_iter = v; - - seq_printf(s, "%d:\t%pI4\t%d\n", - link_iter->link_idx, - &link_iter->dst_ip, - link_iter->dst_port); - - return 0; -} +static struct vnet_host_hooks vnet_host_hooks = { + .timer_create = host_create_timer, + .timer_del = host_del_timer, + .timer_start = host_start_timer, + .timer_stop = host_stop_timer, + .timer_reset = host_reset_timer, -static struct seq_operations route_seq_ops = { - .start = route_seq_start, - .next = route_seq_next, - .stop = route_seq_stop, - .show = route_seq_show -}; + .thread_start = palacios_create_and_start_kernel_thread, + .thread_sleep = host_kthread_sleep, + .thread_wakeup = host_kthread_wakeup, + .thread_stop = host_kthread_stop, + .thread_should_stop = host_kthread_should_stop, + .udelay = host_udelay, + .yield_cpu = palacios_yield_cpu, + .mutex_alloc = palacios_mutex_alloc, + .mutex_free = palacios_mutex_free, + .mutex_lock = palacios_mutex_lock, + .mutex_unlock = palacios_mutex_unlock, + .mutex_lock_irqsave = palacios_mutex_lock_irqsave, + .mutex_unlock_irqrestore = palacios_mutex_unlock_irqrestore, -static struct seq_operations link_seq_ops = { - .start = link_seq_start, - .next = link_seq_next, - .stop = link_seq_stop, - .show = link_seq_show + .print = palacios_print_scoped, + .allocate_pages = host_allocate_pages, + .free_pages = palacios_free_pages, + .malloc = palacios_alloc, + .free = palacios_free, + .vaddr_to_paddr = palacios_vaddr_to_paddr, + .paddr_to_vaddr = palacios_paddr_to_vaddr, }; -static int route_open(struct inode * inode, struct file * file) { - return seq_open(file, &route_seq_ops); -} - - -static int link_open(struct inode * inode, struct file * file) { - return seq_open(file, &link_seq_ops); -} - -static int inject_route(struct palacios_vnet_route * route) { - unsigned long flags; - - v3_vnet_add_route(route->route); - - spin_lock_irqsave(&(vnet_state.lock), flags); - list_add(&(route->node), &(vnet_state.route_list)); - route->route_idx = vnet_state.num_routes++; - spin_unlock_irqrestore(&(vnet_state.lock), flags); - printk("Palacios-vnet: One route added to VNET core\n"); - - return 0; -} - -static ssize_t -route_write(struct file * file, - const char * buf, - size_t size, - loff_t * ppos) { - char route_buf[256]; - char * buf_iter = NULL; - char * line_str = route_buf; - char * token = NULL; - - if (size >= 256) { - return -EFAULT; - } - - if (copy_from_user(route_buf, buf, size)) { - return -EFAULT; - } - - printk("Route written: %s\n", route_buf); - - while ((buf_iter = strsep(&line_str, "\r\n"))) { - - token = strsep(&buf_iter, " "); - if (!token) { - return -EFAULT; - } - - if (strnicmp("ADD", token, strlen("ADD")) == 0) { - struct palacios_vnet_route * new_route = NULL; - new_route = kmalloc(sizeof(struct palacios_vnet_route), GFP_KERNEL); - - if (!new_route) { - return -ENOMEM; - } - - memset(new_route, 0, sizeof(struct palacios_vnet_route)); - - if (parse_route_str(buf_iter, &(new_route->route)) == -1) { - kfree(new_route); - return -EFAULT; - } - - if (inject_route(new_route) != 0) { - return -EFAULT; - } - } else if (strnicmp("DEL", token, strlen("DEL")) == 0) { - printk("I should delete the route here\n"); - } else { - printk("Invalid Route command string\n"); - } - } - - return size; -} - - -static int create_link(struct vnet_link * link) { - int err; - unsigned long flags; - - if ( (err = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &link->sock)) < 0) { - printk("Could not create socket\n"); - return -1; - } - - memset(&link->sock_addr, 0, sizeof(struct sockaddr)); - - link->sock_addr.sin_family = AF_INET; - link->sock_addr.sin_addr.s_addr = link->dst_ip; - link->sock_addr.sin_port = htons(link->dst_port); - - if ((err = link->sock->ops->connect(link->sock, (struct sockaddr *)&(link->sock_addr), sizeof(struct sockaddr), 0) < 0)) { - printk("Could not connect to remote host\n"); - return -1; - } - - // We use the file pointer because we are in the kernel - // This is only used to assigned File Descriptors for user space, so it is available here - // link->sock->file = link; - - spin_lock_irqsave(&(vnet_state.lock), flags); - list_add(&(link->node), &(vnet_state.link_list)); - link->link_idx = vnet_state.num_links++; - spin_unlock_irqrestore(&(vnet_state.lock), flags); - - printk("VNET Bridge: Link created, ip %d, port: %d, idx: %d, link: %p\n", - link->dst_ip, - link->dst_port, - link->link_idx, - link); - - return 0; -} - - -/* ADD dst-ip 9000 */ -static ssize_t -link_write(struct file * file, const char * buf, size_t size, loff_t * ppos) { - char link_buf[256]; - char * link_iter = NULL; - char * line_str = link_buf; - char * token = NULL; - - if (size >= 256) { - return -EFAULT; - } - - if (copy_from_user(link_buf, buf, size)) { - return -EFAULT; - } - - while ((link_iter = strsep(&line_str, "\r\n"))) { - printk("Link written: %s\n", link_buf); - - token = strsep(&link_iter, " "); - - if (!token) { - return -EFAULT; - } - - if (strnicmp("ADD", token, strlen("ADD")) == 0) { - struct vnet_link * new_link = NULL; - char * ip_str = NULL; - uint32_t ip; - - ip_str = strsep(&link_iter, " "); - - if ((!ip_str) || (!link_iter)) { - printk("Missing fields in ADD Link command\n"); - return -EFAULT; - } - - if (in4_pton(ip_str, strlen(ip_str), (uint8_t *)&(ip), '\0', NULL) != 1) { - printk("Invalid Dst IP address (%s)\n", ip_str); - return -EFAULT; - } - - new_link = kmalloc(sizeof(struct vnet_link), GFP_KERNEL); - - if (!new_link) { - return -ENOMEM; - } - - memset(new_link, 0, sizeof(struct vnet_link)); - - new_link->dst_ip = ip; - new_link->dst_port = simple_strtol(link_iter, &link_iter, 10); - - if (create_link(new_link) != 0) { - printk("Could not create link\n"); - kfree(new_link); - return -EFAULT; - } - - } else if (strnicmp("DEL", token, strlen("DEL")) == 0) { - printk("Link deletion not supported\n"); - } else { - printk("Invalid Link command string\n"); - } - } - - return size; -} - - -static struct file_operations route_fops = { - .owner = THIS_MODULE, - .open = route_open, - .read = seq_read, - .write = route_write, - .llseek = seq_lseek, - .release = seq_release -}; - - -static struct file_operations link_fops = { - .owner = THIS_MODULE, - .open = link_open, - .read = seq_read, - .write = link_write, - .llseek = seq_lseek, - .release = seq_release -}; - - -static int init_proc_files(void) { - struct proc_dir_entry * route_entry = NULL; - struct proc_dir_entry * link_entry = NULL; - struct proc_dir_entry * vnet_root = NULL; - - - vnet_root = proc_mkdir("vnet", NULL); - if (vnet_root == NULL) { - return -1; - } - - route_entry = create_proc_entry("routes", 0, vnet_root); - - if (route_entry == NULL) { - remove_proc_entry("vnet", NULL); - return -1; - } - - route_entry->proc_fops = &route_fops; - - - link_entry = create_proc_entry("links", 0, vnet_root); - - if (link_entry == NULL) { - remove_proc_entry("routes", vnet_root); - remove_proc_entry("vnet", NULL); - return -1; - } - - link_entry->proc_fops = &link_fops; - - return 0; - -} - - - -static int -udp_send(struct socket * sock, - struct sockaddr_in * addr, - unsigned char * buf, int len) { - struct msghdr msg; - struct iovec iov; - mm_segment_t oldfs; - int size = 0; - - - if (sock->sk == NULL) { - return 0; - } - - iov.iov_base = buf; - iov.iov_len = len; - - msg.msg_flags = 0; - msg.msg_name = addr; - msg.msg_namelen = sizeof(struct sockaddr_in); - msg.msg_control = NULL; - msg.msg_controllen = 0; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = NULL; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - size = sock_sendmsg(sock, &msg, len); - set_fs(oldfs); - - return size; -} - - - -static int -udp_recv(struct socket * sock, - struct sockaddr_in * addr, - unsigned char * buf, int len) { - struct msghdr msg; - struct iovec iov; - mm_segment_t oldfs; - int size = 0; - - if (sock->sk == NULL) { - return 0; - } - - iov.iov_base = buf; - iov.iov_len = len; - - msg.msg_flags = 0; - msg.msg_name = addr; - msg.msg_namelen = sizeof(struct sockaddr_in); - msg.msg_control = NULL; - msg.msg_controllen = 0; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = NULL; - - oldfs = get_fs(); - set_fs(KERNEL_DS); - size = sock_recvmsg(sock, &msg, len, msg.msg_flags); +static int vnet_init( void ) { + init_vnet(&vnet_host_hooks); - set_fs(oldfs); - - return size; -} - -//send packets from Network to VNET core -static int -send_to_palacios(unsigned char * buf, - int len, - int link_id){ - struct v3_vnet_pkt pkt; - pkt.size = len; - pkt.src_type = LINK_EDGE; - pkt.src_id = link_id; - memcpy(pkt.header, buf, ETHERNET_HEADER_LEN); - pkt.data = buf; - -#ifdef CONFIG_PALACIOS_VNET_DEBUG - { - printk("VNET Lnx Bridge: send pkt to VNET core (size: %d, src_id: %d, src_type: %d)\n", - pkt.size, pkt.src_id, pkt.src_type); - - print_hex_dump(NULL, "pkt_data: ", 0, 20, 20, pkt.data, pkt.size, 0); - } -#endif - - return v3_vnet_send_pkt(&pkt, NULL);; -} - - -//send packet from VNET core to Network -static int -bridge_send_pkt(struct v3_vm_info * vm, - struct v3_vnet_pkt * pkt, - void * private_data) { - struct vnet_link * link; - - #ifdef CONFIG_PALACIOS_VNET_DEBUG - { - printk("VNET Lnx Host Bridge: packet received from VNET Core ... len: %d, pkt size: %d, link: %d\n", - len, - pkt->size, - pkt->dst_id); - - print_hex_dump(NULL, "pkt_data: ", 0, 20, 20, pkt->data, pkt->size, 0); - } - #endif - - vnet_state.pkt_recv ++; - - link = link_by_idx(pkt->dst_id); - if (link != NULL) { - udp_send(link->sock, &(link->sock_addr), pkt->data, pkt->size); - vnet_state.pkt_udp_send ++; - } else { - printk("VNET Bridge Linux Host: wrong dst link, idx: %d, discards the packet\n", pkt->dst_id); - vnet_state.pkt_drop ++; - } + vnet_bridge_init(); + vnet_ctrl_init(); + INFO("V3 VNET Inited\n"); + return 0; } -static void -poll_pkt(struct v3_vm_info * vm, - void * private_data) { - - -} - - - -static int init_vnet_serv(void) { - - if (sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &vnet_state.serv_sock) < 0) { - printk("Could not create socket\n"); - return -1; - } - - memset(&vnet_state.serv_addr, 0, sizeof(struct sockaddr)); - - vnet_state.serv_addr.sin_family = AF_INET; - vnet_state.serv_addr.sin_addr.s_addr = htonl(INADDR_ANY); - vnet_state.serv_addr.sin_port = htons(VNET_UDP_PORT); +static int vnet_deinit( void ) { - if (vnet_state.serv_sock->ops->bind(vnet_state.serv_sock, (struct sockaddr *)&(vnet_state.serv_addr), sizeof(struct sockaddr)) < 0) { - printk("Could not bind VNET server socket to port %d\n", VNET_UDP_PORT); - return -1; - } + INFO("V3 Control Deinit Start\n"); - printk("VNET server bind to port: %d\n", VNET_UDP_PORT); + vnet_ctrl_deinit(); - return 0; -} + INFO("V3 Bridge Deinit Start\n"); -static int vnet_server(void * arg) { - unsigned char pkt[ETHERNET_PACKET_LEN]; - struct sockaddr_in pkt_addr; - struct vnet_link *link = NULL; - int len; - int link_id; + vnet_bridge_deinit(); - printk("Palacios VNET Bridge: UDP receiving server ..... \n"); + INFO("V3 VNET Deinit Start\n"); - while (!kthread_should_stop()) { - - len = udp_recv(vnet_state.serv_sock, &pkt_addr, pkt, ETHERNET_PACKET_LEN); - if(len < 0) { - printk("Receive error: Could not get packet, error %d\n", len); - continue; - } - - link = link_by_ip(ntohl(pkt_addr.sin_addr.s_addr)); - if (link != NULL){ - link_id= link->link_idx; - } - else { - link_id= 0; - } - - vnet_state.pkt_udp_recv ++; + deinit_vnet(); - send_to_palacios(pkt, len, link_id); - } + INFO("V3 VNET Deinited\n"); return 0; } +static struct linux_ext vnet_ext = { + .name = "VNET", + .init = vnet_init, + .deinit = vnet_deinit, + .guest_init = NULL, + .guest_deinit = NULL +}; -int palacios_init_vnet(void) { - struct v3_vnet_bridge_ops bridge_ops; - - memset(&vnet_state, 0, sizeof(struct palacios_vnet_state)); - - INIT_LIST_HEAD(&(vnet_state.link_list)); - INIT_LIST_HEAD(&(vnet_state.route_list)); - spin_lock_init(&(vnet_state.lock)); - - init_proc_files(); - if(init_vnet_serv() < 0){ - printk("Failure to initiate VNET server\n"); - return -1; - } - - vnet_state.serv_thread = kthread_run(vnet_server, NULL, "vnet-server"); - - //kthread_run(profiling, NULL, "Profiling"); - - bridge_ops.input = bridge_send_pkt; - bridge_ops.poll = poll_pkt; - - v3_vnet_add_bridge(NULL, &bridge_ops, HOST_LNX_BRIDGE, NULL); - - printk("Palacios VNET Linux Bridge initiated\n"); - - return 0; -} - +register_extension(&vnet_ext);