]> git.ozlabs.org Git - petitboot/blobdiff - discover/network.c
discover: Add platform-dummy
[petitboot] / discover / network.c
index 6ae44175ab134dd408f52060b20773b7e6884fbf..2057525e2fe690cf82ec5a012240f10515eb85b0 100644 (file)
@@ -23,6 +23,7 @@
 #include "sysinfo.h"
 #include "platform.h"
 #include "device-handler.h"
+#include "paths.h"
 
 #define HWADDR_SIZE    6
 #define PIDFILE_BASE   (LOCAL_STATE_DIR "/petitboot/")
@@ -52,7 +53,9 @@ struct interface {
 
        struct list_item list;
        struct process *udhcpc_process;
+       struct process *udhcpc6_process;
        struct discover_device *dev;
+       bool ready;
 };
 
 struct network {
@@ -277,6 +280,13 @@ static int interface_change(struct interface *interface, bool up)
                process_stop_async(interface->udhcpc_process);
                process_release(interface->udhcpc_process);
        }
+       if (!up && interface->udhcpc6_process) {
+               /* we don't care about the callback from here */
+               interface->udhcpc6_process->exit_cb = NULL;
+               interface->udhcpc6_process->data = NULL;
+               process_stop_async(interface->udhcpc6_process);
+               process_release(interface->udhcpc6_process);
+       }
 
        if (!up) {
                rc = process_run_simple(interface, pb_system_apps.ip,
@@ -310,9 +320,17 @@ static int interface_down(struct interface *interface)
 static void udhcpc_process_exit(struct process *process)
 {
        struct interface *interface = process->data;
-       pb_debug("udhcp client [pid %d] for interface %s exited, rc %d\n",
-                       process->pid, interface->name, process->exit_status);
-       interface->udhcpc_process = NULL;
+
+       if (process == interface->udhcpc_process) {
+               pb_debug("udhcpc client [pid %d] for interface %s exited, rc %d\n",
+                               process->pid, interface->name, process->exit_status);
+               interface->udhcpc_process = NULL;
+       } else {
+               pb_debug("udhcpc6 client [pid %d] for interface %s exited, rc %d\n",
+                               process->pid, interface->name, process->exit_status);
+               interface->udhcpc6_process = NULL;
+       }
+
        process_release(process);
 }
 
@@ -320,18 +338,33 @@ static void configure_interface_dhcp(struct network *network,
                struct interface *interface)
 {
        const struct platform *platform;
-       char pidfile[256], id[10];
-       struct process *process;
+       char pidfile[256], idv4[10], idv6[10];
+       struct process *p_v4, *p_v6;
        int rc;
-       const char *argv[] = {
+       const char *argv_ipv4[] = {
                pb_system_apps.udhcpc,
                "-R",
                "-f",
                "-O", "pxeconffile",
                "-O", "pxepathprefix",
+               "-O", "reboottime",
+               "-p", pidfile,
+               "-i", interface->name,
+               "-x", idv4, /* [11,12] - dhcp client identifier */
+               NULL,
+       };
+
+       const char *argv_ipv6[] = {
+               pb_system_apps.udhcpc6,
+               "-R",
+               "-f",
+               "-O", "bootfile_url",
+               "-O", "bootfile_param",
+               "-O", "pxeconffile",
+               "-O", "pxepathprefix",
                "-p", pidfile,
                "-i", interface->name,
-               "-x", id, /* [11,12] - dhcp client identifier */
+               "-x", idv6, /* [15,16] - dhcp client identifier */
                NULL,
        };
 
@@ -342,24 +375,40 @@ static void configure_interface_dhcp(struct network *network,
                        PIDFILE_BASE, interface->name);
 
        platform = platform_get();
-       if (platform && platform->dhcp_arch_id != 0xffff)
-               snprintf(id, sizeof(id), "0x5d:%04x", platform->dhcp_arch_id);
-       else
-               argv[11] = NULL;
+       if (platform && platform->dhcp_arch_id != 0xffff) {
+               snprintf(idv6, sizeof(idv6), "0x3d:%04x",
+                               platform->dhcp_arch_id);
+               snprintf(idv4, sizeof(idv4), "0x5d:%04x",
+                               platform->dhcp_arch_id);
+       } else {
+               argv_ipv4[11] = argv_ipv6[15] =  NULL;
+       }
 
-       process = process_create(interface);
+       p_v4 = process_create(interface);
+       p_v4->path = pb_system_apps.udhcpc;
+       p_v4->argv = argv_ipv4;
+       p_v4->exit_cb = udhcpc_process_exit;
+       p_v4->data = interface;
 
-       process->path = pb_system_apps.udhcpc;
-       process->argv = argv;
-       process->exit_cb = udhcpc_process_exit;
-       process->data = interface;
+       pb_log("Running DHCPv4 client\n");
+       rc = process_run_async(p_v4);
+       if (rc)
+               process_release(p_v4);
+       else
+               interface->udhcpc_process = p_v4;
 
-       rc = process_run_async(process);
+       pb_log("Running DHCPv6 client\n");
+       p_v6 = process_create(interface);
+       p_v6->path = pb_system_apps.udhcpc6;
+       p_v6->argv = argv_ipv6;
+       p_v6->exit_cb = udhcpc_process_exit;
+       p_v6->data = interface;
 
+       rc = process_run_async(p_v6);
        if (rc)
-               process_release(process);
+               process_release(p_v6);
        else
-               interface->udhcpc_process = process;
+               interface->udhcpc6_process = p_v6;
 
        return;
 }
@@ -415,6 +464,8 @@ static void configure_interface_static(struct network *network,
                                                interface->hwaddr,
                                                sizeof(interface->hwaddr)),
                                config->static_config.address);
+               device_handler_start_requery_timeout(network->handler,
+                               interface->dev, -1);
        }
 
        return;
@@ -489,20 +540,65 @@ static void configure_interface(struct network *network,
 
        } else if (config->method == CONFIG_METHOD_STATIC) {
                configure_interface_static(network, interface, config);
+               /* Nothing left to do for static interfaces */
+               pending_network_jobs_start();
        }
 
        interface->state = IFSTATE_CONFIGURED;
 }
 
+void network_requery_device(struct network *network,
+               struct discover_device *dev)
+{
+       const struct interface_config *config;
+       struct interface *interface;
+
+       interface = find_interface_by_uuid(network, dev->uuid);
+       if (!interface)
+               return;
+
+       if (interface->udhcpc_process) {
+               interface->udhcpc_process->exit_cb = NULL;
+               interface->udhcpc_process->data = NULL;
+               process_stop_async(interface->udhcpc_process);
+               process_release(interface->udhcpc_process);
+       }
+
+       config = find_config_by_hwaddr(interface->hwaddr);
+
+       if (config && config->ignore)
+               return;
+
+       if (!config || config->method == CONFIG_METHOD_DHCP) {
+               /* Restart DHCP. Once we acquire a lease, we'll re-start
+                * the requery timeout (based on any reboottime DHCP option)
+                */
+               configure_interface_dhcp(network, interface);
+
+       } else if (config->method == CONFIG_METHOD_STATIC &&
+                       config->static_config.url) {
+               /* Redownload statically-provided URL, and manually restart
+                * requery timeout */
+               device_handler_process_url(network->handler,
+                               config->static_config.url,
+                               mac_bytes_to_string(interface->dev,
+                                               interface->hwaddr,
+                                               sizeof(interface->hwaddr)),
+                               config->static_config.address);
+               device_handler_start_requery_timeout(network->handler,
+                               dev, -1);
+       }
+}
+
 static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
 {
        bool have_ifaddr, have_ifname;
-       struct interface *interface;
+       struct interface *interface, *tmp;
        struct ifinfomsg *info;
        struct rtattr *attr;
        unsigned int mtu;
        uint8_t ifaddr[6];
-       char ifname[IFNAMSIZ+1];
+       char ifname[IFNAMSIZ];
        int attrlen, type;
 
 
@@ -530,6 +626,7 @@ static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
 
                case IFLA_IFNAME:
                        strncpy(ifname, data, IFNAMSIZ);
+                       ifname[IFNAMSIZ - 1] = '\0';
                        have_ifname = true;
                        break;
 
@@ -561,7 +658,17 @@ static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
                interface->ifindex = info->ifi_index;
                interface->state = IFSTATE_NEW;
                memcpy(interface->hwaddr, ifaddr, sizeof(interface->hwaddr));
-               strncpy(interface->name, ifname, sizeof(interface->name) - 1);
+               strncpy(interface->name, ifname, sizeof(interface->name));
+
+               list_for_each_entry(&network->interfaces, tmp, list)
+                       if (memcmp(interface->hwaddr, tmp->hwaddr,
+                                  sizeof(interface->hwaddr)) == 0) {
+                               pb_log("%s: %s has duplicate MAC address, ignoring\n",
+                                      __func__, interface->name);
+                               talloc_free(interface);
+                               return -1;
+                       }
+
                list_add(&network->interfaces, &interface->list);
                create_interface_dev(network, interface);
        }
@@ -569,7 +676,7 @@ static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
        /* A repeated RTM_NEWLINK can represent an interface name change */
        if (strncmp(interface->name, ifname, IFNAMSIZ)) {
                pb_debug("ifname update: %s -> %s\n", interface->name, ifname);
-               strncpy(interface->name, ifname, sizeof(interface->name) - 1);
+               strncpy(interface->name, ifname, sizeof(interface->name));
                talloc_free(interface->dev->device->id);
                interface->dev->device->id =
                        talloc_strdup(interface->dev->device, ifname);
@@ -585,6 +692,11 @@ static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
        if (!interface->dev)
                create_interface_dev(network, interface);
 
+       if (!interface->ready && strncmp(interface->name, "lo", strlen("lo"))) {
+               pb_log("%s not marked ready yet\n", interface->name);
+               return 0;
+       }
+
        configure_interface(network, interface,
                        info->ifi_flags & IFF_UP,
                        info->ifi_flags & IFF_LOWER_UP);
@@ -592,6 +704,72 @@ static int network_handle_nlmsg(struct network *network, struct nlmsghdr *nlmsg)
        return 0;
 }
 
+void network_mark_interface_ready(struct device_handler *handler,
+               int ifindex, const char *ifname, uint8_t *mac, int hwsize)
+{
+       struct network *network = device_handler_get_network(handler);
+       struct interface *interface, *tmp = NULL;
+       char *macstr;
+
+       if (!network) {
+               pb_log("Network not ready - can not mark interface ready\n");
+               return;
+       }
+
+       if (hwsize != HWADDR_SIZE)
+               return;
+
+       if (strncmp(ifname, "lo", strlen("lo")) == 0)
+               return;
+
+       interface = find_interface_by_ifindex(network, ifindex);
+       if (!interface) {
+               pb_debug("Creating ready interface %d - %s\n",
+                               ifindex, ifname);
+               interface = talloc_zero(network, struct interface);
+               interface->ifindex = ifindex;
+               interface->state = IFSTATE_NEW;
+               memcpy(interface->hwaddr, mac, HWADDR_SIZE);
+               strncpy(interface->name, ifname, sizeof(interface->name) - 1);
+
+               list_for_each_entry(&network->interfaces, tmp, list)
+                       if (memcmp(interface->hwaddr, tmp->hwaddr,
+                                  sizeof(interface->hwaddr)) == 0) {
+                               pb_log("%s: %s has duplicate MAC address, ignoring\n",
+                                      __func__, interface->name);
+                               talloc_free(interface);
+                               return;
+                       }
+
+               list_add(&network->interfaces, &interface->list);
+               create_interface_dev(network, interface);
+       }
+
+       if (interface->ready) {
+               pb_log("%s already ready\n", interface->name);
+               return;
+       }
+
+       if (strncmp(interface->name, ifname, strlen(ifname)) != 0) {
+               pb_debug("ifname update from udev: %s -> %s\n", interface->name, ifname);
+               strncpy(interface->name, ifname, sizeof(interface->name) - 1);
+               talloc_free(interface->dev->device->id);
+               interface->dev->device->id =
+                       talloc_strdup(interface->dev->device, ifname);
+       }
+
+       if (memcmp(interface->hwaddr, mac, HWADDR_SIZE) != 0) {
+               macstr = mac_bytes_to_string(interface, mac, hwsize);
+               pb_log("Warning - new MAC for interface %d does not match: %s\n",
+                               ifindex, macstr);
+               talloc_free(macstr);
+       }
+
+       pb_log("Interface %s ready\n", ifname);
+       interface->ready = true;
+       configure_interface(network, interface, false, false);
+}
+
 static int network_netlink_process(void *arg)
 {
        struct network *network = arg;