+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#define _GNU_SOURCE
+
#include <sys/socket.h>
#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+
+#include <net/if.h>
+#include <net/if_arp.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
#include <linux/rtnetlink.h>
#include <linux/sockios.h>
+#include <linux/ip.h>
#include <linux/if_vlan.h>
+#include <linux/if_bridge.h>
+#include <linux/if_tunnel.h>
+#include <linux/ethtool.h>
+#include <unistd.h>
#include <string.h>
#include <fcntl.h>
+#include <glob.h>
+#include <time.h>
#include <netlink/msg.h>
#include <netlink/attr.h>
#include "device.h"
#include "system.h"
+struct event_socket {
+ struct uloop_fd uloop;
+ struct nl_sock *sock;
+ struct nl_cb *cb;
+};
+
static int sock_ioctl = -1;
static struct nl_sock *sock_rtnl = NULL;
-static struct nl_sock *sock_rtnl_event = NULL;
-static void handler_rtnl_event(struct uloop_fd *u, unsigned int events);
static int cb_rtnl_event(struct nl_msg *msg, void *arg);
-static struct uloop_fd rtnl_event = {.cb = handler_rtnl_event};
-static struct nl_cb *nl_cb_rtnl_event;
+static void handle_hotplug_event(struct uloop_fd *u, unsigned int events);
+
+static char dev_buf[256];
+
+static void
+handler_nl_event(struct uloop_fd *u, unsigned int events)
+{
+ struct event_socket *ev = container_of(u, struct event_socket, uloop);
+ nl_recvmsgs(ev->sock, ev->cb);
+}
+
+static struct nl_sock *
+create_socket(int protocol, int groups)
+{
+ struct nl_sock *sock;
+
+ sock = nl_socket_alloc();
+ if (!sock)
+ return NULL;
+
+ if (groups)
+ nl_join_groups(sock, groups);
+
+ if (nl_connect(sock, protocol))
+ return NULL;
+
+ return sock;
+}
+
+static bool
+create_raw_event_socket(struct event_socket *ev, int protocol, int groups,
+ uloop_fd_handler cb)
+{
+ ev->sock = create_socket(protocol, groups);
+ if (!ev->sock)
+ return false;
+
+ ev->uloop.fd = nl_socket_get_fd(ev->sock);
+ ev->uloop.cb = cb;
+ uloop_fd_add(&ev->uloop, ULOOP_READ | ULOOP_EDGE_TRIGGER);
+ return true;
+}
+
+static bool
+create_event_socket(struct event_socket *ev, int protocol,
+ int (*cb)(struct nl_msg *msg, void *arg))
+{
+ // Prepare socket for link events
+ ev->cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (!ev->cb)
+ return false;
+
+ nl_cb_set(ev->cb, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
+
+ return create_raw_event_socket(ev, protocol, 0, handler_nl_event);
+}
int system_init(void)
{
+ static struct event_socket rtnl_event;
+ static struct event_socket hotplug_event;
+
sock_ioctl = socket(AF_LOCAL, SOCK_DGRAM, 0);
fcntl(sock_ioctl, F_SETFD, fcntl(sock_ioctl, F_GETFD) | FD_CLOEXEC);
// Prepare socket for routing / address control
- if ((sock_rtnl = nl_socket_alloc())) {
- if (nl_connect(sock_rtnl, NETLINK_ROUTE)) {
- nl_socket_free(sock_rtnl);
- sock_rtnl = NULL;
- }
- }
+ sock_rtnl = create_socket(NETLINK_ROUTE, 0);
+ if (!sock_rtnl)
+ return -1;
- // Prepare socket for link events
- if ((nl_cb_rtnl_event = nl_cb_alloc(NL_CB_DEFAULT)))
- nl_cb_set(nl_cb_rtnl_event, NL_CB_VALID, NL_CB_CUSTOM,
- cb_rtnl_event, NULL);
-
- if (nl_cb_rtnl_event && (sock_rtnl_event = nl_socket_alloc())) {
- if (nl_connect(sock_rtnl_event, NETLINK_ROUTE)) {
- nl_socket_free(sock_rtnl_event);
- sock_rtnl_event = NULL;
- }
- // Receive network link events form kernel
- nl_socket_add_membership(sock_rtnl_event, RTNLGRP_LINK);
-
- // Synthesize initial link messages
- struct nl_msg *m = nlmsg_alloc_simple(RTM_GETLINK, NLM_F_DUMP);
- if (m && nlmsg_reserve(m, sizeof(struct ifinfomsg), 0)) {
- nl_send_auto_complete(sock_rtnl_event, m);
- nlmsg_free(m);
- }
+ if (!create_event_socket(&rtnl_event, NETLINK_ROUTE, cb_rtnl_event))
+ return -1;
- rtnl_event.fd = nl_socket_get_fd(sock_rtnl_event);
- uloop_fd_add(&rtnl_event, ULOOP_READ | ULOOP_EDGE_TRIGGER);
- }
+ if (!create_raw_event_socket(&hotplug_event, NETLINK_KOBJECT_UEVENT, 1,
+ handle_hotplug_event))
+ return -1;
+
+ // Receive network link events form kernel
+ nl_socket_add_membership(rtnl_event.sock, RTNLGRP_LINK);
- return -(sock_ioctl < 0 || !sock_rtnl);
+ return 0;
}
-// If socket is ready for reading parse netlink events
-static void handler_rtnl_event(struct uloop_fd *u, unsigned int events)
+static void system_set_sysctl(const char *path, const char *val)
{
- nl_recvmsgs(sock_rtnl_event, nl_cb_rtnl_event);
+ int fd;
+
+ fd = open(path, O_WRONLY);
+ if (fd < 0)
+ return;
+
+ write(fd, val, strlen(val));
+ close(fd);
+}
+
+static void system_set_dev_sysctl(const char *path, const char *device, const char *val)
+{
+ snprintf(dev_buf, sizeof(dev_buf), path, val);
+ system_set_sysctl(dev_buf, val);
+}
+
+static void system_set_disable_ipv6(struct device *dev, const char *val)
+{
+ system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev->ifname, val);
}
// Evaluate netlink messages
goto out;
dev->ifindex = ifi->ifi_index;
- device_set_present(dev, (nh->nlmsg_type == RTM_NEWLINK));
+ /* TODO: parse link status */
out:
return 0;
}
-static int system_rtnl_call(struct nl_msg *msg)
+static void
+handle_hotplug_msg(char *data, int size)
{
- int s = -(nl_send_auto_complete(sock_rtnl, msg)
- || nl_wait_for_ack(sock_rtnl));
- nlmsg_free(msg);
- return s;
+ const char *subsystem = NULL, *interface = NULL;
+ char *cur, *end, *sep;
+ struct device *dev;
+ int skip;
+ bool add;
+
+ if (!strncmp(data, "add@", 4))
+ add = true;
+ else if (!strncmp(data, "remove@", 7))
+ add = false;
+ else
+ return;
+
+ skip = strlen(data) + 1;
+ end = data + size;
+
+ for (cur = data + skip; cur < end; cur += skip) {
+ skip = strlen(cur) + 1;
+
+ sep = strchr(cur, '=');
+ if (!sep)
+ continue;
+
+ *sep = 0;
+ if (!strcmp(cur, "INTERFACE"))
+ interface = sep + 1;
+ else if (!strcmp(cur, "SUBSYSTEM")) {
+ subsystem = sep + 1;
+ if (strcmp(subsystem, "net") != 0)
+ return;
+ }
+ if (subsystem && interface)
+ goto found;
+ }
+ return;
+
+found:
+ dev = device_get(interface, false);
+ if (!dev)
+ return;
+
+ if (dev->type != &simple_device_type)
+ return;
+
+ device_set_present(dev, add);
+}
+
+static void
+handle_hotplug_event(struct uloop_fd *u, unsigned int events)
+{
+ struct event_socket *ev = container_of(u, struct event_socket, uloop);
+ struct sockaddr_nl nla;
+ unsigned char *buf = NULL;
+ int size;
+
+ while ((size = nl_recv(ev->sock, &nla, &buf, NULL)) > 0) {
+ if (nla.nl_pid == 0)
+ handle_hotplug_msg((char *) buf, size);
+
+ free(buf);
+ }
}
-int system_bridge_addbr(struct device *bridge)
+static int system_rtnl_call(struct nl_msg *msg)
{
- return ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname);
+ int ret;
+
+ ret = nl_send_auto_complete(sock_rtnl, msg);
+ nlmsg_free(msg);
+
+ if (ret < 0)
+ return ret;
+
+ return nl_wait_for_ack(sock_rtnl);
}
int system_bridge_delbr(struct device *bridge)
return ioctl(sock_ioctl, SIOCBRDELBR, bridge->ifname);
}
-static int system_bridge_if(struct device *bridge, struct device *dev, int cmd)
+static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
{
struct ifreq ifr;
- ifr.ifr_ifindex = dev->ifindex;
- strncpy(ifr.ifr_name, bridge->ifname, sizeof(ifr.ifr_name));
+ if (dev)
+ ifr.ifr_ifindex = dev->ifindex;
+ else
+ ifr.ifr_data = data;
+ strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
return ioctl(sock_ioctl, cmd, &ifr);
}
+static bool system_is_bridge(const char *name, char *buf, int buflen)
+{
+ struct stat st;
+
+ snprintf(buf, buflen, "/sys/devices/virtual/net/%s/bridge", name);
+ if (stat(buf, &st) < 0)
+ return false;
+
+ return true;
+}
+
+static char *system_get_bridge(const char *name, char *buf, int buflen)
+{
+ char *path;
+ ssize_t len;
+ glob_t gl;
+
+ snprintf(buf, buflen, "/sys/devices/virtual/net/*/brif/%s/bridge", name);
+ if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
+ return NULL;
+
+ if (gl.gl_pathc == 0)
+ return NULL;
+
+ len = readlink(gl.gl_pathv[0], buf, buflen);
+ if (len < 0)
+ return NULL;
+
+ buf[len] = 0;
+ path = strrchr(buf, '/');
+ if (!path)
+ return NULL;
+
+ return path + 1;
+}
+
int system_bridge_addif(struct device *bridge, struct device *dev)
{
- return system_bridge_if(bridge, dev, SIOCBRADDIF);
+ char *oldbr;
+
+ system_set_disable_ipv6(dev, "1");
+ oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
+ if (oldbr && !strcmp(oldbr, bridge->ifname))
+ return 0;
+
+ return system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
}
int system_bridge_delif(struct device *bridge, struct device *dev)
{
- return system_bridge_if(bridge, dev, SIOCBRDELIF);
+ system_set_disable_ipv6(dev, "0");
+ return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
+}
+
+static int system_if_resolve(struct device *dev)
+{
+ struct ifreq ifr;
+ strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
+ if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
+ return ifr.ifr_ifindex;
+ else
+ return 0;
+}
+
+static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
+{
+ struct ifreq ifr;
+ strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
+ ifr.ifr_flags |= add;
+ ifr.ifr_flags &= ~rem;
+ return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
+}
+
+struct clear_data {
+ struct nl_msg *msg;
+ struct device *dev;
+ int type;
+ int size;
+ int af;
+};
+
+
+static bool check_ifaddr(struct nlmsghdr *hdr, int ifindex)
+{
+ struct ifaddrmsg *ifa = NLMSG_DATA(hdr);
+
+ return ifa->ifa_index == ifindex;
+}
+
+static bool check_route(struct nlmsghdr *hdr, int ifindex)
+{
+ struct nlattr *tb[__RTA_MAX];
+
+ nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
+ if (!tb[RTA_OIF])
+ return false;
+
+ return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
+}
+
+static int cb_clear_event(struct nl_msg *msg, void *arg)
+{
+ struct clear_data *clr = arg;
+ struct nlmsghdr *hdr = nlmsg_hdr(msg);
+ bool (*cb)(struct nlmsghdr *, int ifindex);
+ int type;
+
+ switch(clr->type) {
+ case RTM_GETADDR:
+ type = RTM_DELADDR;
+ if (hdr->nlmsg_type != RTM_NEWADDR)
+ return NL_SKIP;
+
+ cb = check_ifaddr;
+ break;
+ case RTM_GETROUTE:
+ type = RTM_DELROUTE;
+ if (hdr->nlmsg_type != RTM_NEWROUTE)
+ return NL_SKIP;
+
+ cb = check_route;
+ break;
+ default:
+ return NL_SKIP;
+ }
+
+ if (!cb(hdr, clr->dev->ifindex))
+ return NL_SKIP;
+
+ D(SYSTEM, "Remove %s from device %s\n",
+ type == RTM_DELADDR ? "an address" : "a route",
+ clr->dev->ifname);
+ memcpy(nlmsg_hdr(clr->msg), hdr, hdr->nlmsg_len);
+ hdr = nlmsg_hdr(clr->msg);
+ hdr->nlmsg_type = type;
+ hdr->nlmsg_flags = NLM_F_REQUEST;
+
+ if (!nl_send_auto_complete(sock_rtnl, clr->msg))
+ nl_wait_for_ack(sock_rtnl);
+
+ return NL_SKIP;
+}
+
+static int
+cb_finish_event(struct nl_msg *msg, void *arg)
+{
+ int *pending = arg;
+ *pending = 0;
+ return NL_STOP;
+}
+
+static int
+error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
+{
+ int *pending = arg;
+ *pending = err->error;
+ return NL_STOP;
+}
+
+static void
+system_if_clear_entries(struct device *dev, int type, int af)
+{
+ struct clear_data clr;
+ struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
+ struct rtmsg rtm = {
+ .rtm_family = af,
+ .rtm_flags = RTM_F_CLONED,
+ };
+ int flags = NLM_F_DUMP;
+ int pending = 1;
+
+ clr.af = af;
+ clr.dev = dev;
+ clr.type = type;
+ switch (type) {
+ case RTM_GETADDR:
+ clr.size = sizeof(struct rtgenmsg);
+ break;
+ case RTM_GETROUTE:
+ clr.size = sizeof(struct rtmsg);
+ break;
+ default:
+ return;
+ }
+
+ if (!cb)
+ return;
+
+ clr.msg = nlmsg_alloc_simple(type, flags);
+ if (!clr.msg)
+ goto out;
+
+ nlmsg_append(clr.msg, &rtm, clr.size, 0);
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_clear_event, &clr);
+ nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_finish_event, &pending);
+ nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &pending);
+
+ nl_send_auto_complete(sock_rtnl, clr.msg);
+ while (pending > 0)
+ nl_recvmsgs(sock_rtnl, cb);
+
+ nlmsg_free(clr.msg);
+out:
+ nl_cb_put(cb);
+}
+
+/*
+ * Clear bridge (membership) state and bring down device
+ */
+void system_if_clear_state(struct device *dev)
+{
+ static char buf[256];
+ char *bridge;
+
+ if (dev->external)
+ return;
+
+ dev->ifindex = system_if_resolve(dev);
+ if (!dev->ifindex)
+ return;
+
+ system_if_flags(dev->ifname, 0, IFF_UP);
+
+ if (system_is_bridge(dev->ifname, buf, sizeof(buf))) {
+ D(SYSTEM, "Delete existing bridge named '%s'\n", dev->ifname);
+ system_bridge_delbr(dev);
+ return;
+ }
+
+ bridge = system_get_bridge(dev->ifname, buf, sizeof(buf));
+ if (bridge) {
+ D(SYSTEM, "Remove device '%s' from bridge '%s'\n", dev->ifname, bridge);
+ system_bridge_if(bridge, dev, SIOCBRDELIF, NULL);
+ }
+
+ system_if_clear_entries(dev, RTM_GETROUTE, AF_INET);
+ system_if_clear_entries(dev, RTM_GETADDR, AF_INET);
+ system_if_clear_entries(dev, RTM_GETROUTE, AF_INET6);
+ system_if_clear_entries(dev, RTM_GETADDR, AF_INET6);
+ system_set_disable_ipv6(dev, "0");
+}
+
+static inline unsigned long
+sec_to_jiffies(int val)
+{
+ return (unsigned long) val * 100;
+}
+
+int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
+{
+ unsigned long args[4] = {};
+
+ if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
+ return -1;
+
+ args[0] = BRCTL_SET_BRIDGE_STP_STATE;
+ args[1] = !!cfg->stp;
+ system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
+
+ args[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY;
+ args[1] = sec_to_jiffies(cfg->forward_delay);
+ system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
+
+ system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
+ bridge->ifname, cfg->igmp_snoop ? "1" : "0");
+
+ if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
+ args[0] = BRCTL_SET_AGEING_TIME;
+ args[1] = sec_to_jiffies(cfg->ageing_time);
+ system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
+ }
+
+ if (cfg->flags & BRIDGE_OPT_HELLO_TIME) {
+ args[0] = BRCTL_SET_BRIDGE_HELLO_TIME;
+ args[1] = sec_to_jiffies(cfg->hello_time);
+ system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
+ }
+
+ if (cfg->flags & BRIDGE_OPT_MAX_AGE) {
+ args[0] = BRCTL_SET_BRIDGE_MAX_AGE;
+ args[1] = sec_to_jiffies(cfg->max_age);
+ system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
+ }
+
+ return 0;
}
static int system_vlan(struct device *dev, int id)
{
struct vlan_ioctl_args ifr = {
- .cmd = (id == 0) ? DEL_VLAN_CMD : ADD_VLAN_CMD,
- .u = {.VID = id},
+ .cmd = SET_VLAN_NAME_TYPE_CMD,
+ .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
};
+
+ ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
+
+ if (id < 0) {
+ ifr.cmd = DEL_VLAN_CMD;
+ ifr.u.VID = 0;
+ } else {
+ ifr.cmd = ADD_VLAN_CMD;
+ ifr.u.VID = id;
+ }
strncpy(ifr.device1, dev->ifname, sizeof(ifr.device1));
return ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
}
int system_vlan_del(struct device *dev)
{
- return system_vlan(dev, 0);
+ return system_vlan(dev, -1);
}
-static int system_if_flags(struct device *dev, unsigned add, unsigned rem)
+static void
+system_if_get_settings(struct device *dev, struct device_settings *s)
{
struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
- ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
- ifr.ifr_flags |= add;
- ifr.ifr_flags &= ~rem;
- return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
+
+ if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
+ s->mtu = ifr.ifr_mtu;
+ s->flags |= DEV_OPT_MTU;
+ }
+
+ if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
+ s->txqueuelen = ifr.ifr_qlen;
+ s->flags |= DEV_OPT_TXQUEUELEN;
+ }
+
+ if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
+ memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
+ s->flags |= DEV_OPT_MACADDR;
+ }
}
-static int system_if_resolve(struct device *dev)
+static void
+system_if_apply_settings(struct device *dev, struct device_settings *s)
{
struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
- if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
- return ifr.ifr_ifindex;
- else
- return 0;
+ if (s->flags & DEV_OPT_MTU) {
+ ifr.ifr_mtu = s->mtu;
+ if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
+ s->flags &= ~DEV_OPT_MTU;
+ }
+ if (s->flags & DEV_OPT_TXQUEUELEN) {
+ ifr.ifr_qlen = s->txqueuelen;
+ if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
+ s->flags &= ~DEV_OPT_TXQUEUELEN;
+ }
+ if (s->flags & DEV_OPT_MACADDR) {
+ ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
+ memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
+ if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
+ s->flags &= ~DEV_OPT_MACADDR;
+ }
}
int system_if_up(struct device *dev)
{
+ system_if_get_settings(dev, &dev->orig_settings);
+ system_if_apply_settings(dev, &dev->settings);
dev->ifindex = system_if_resolve(dev);
- return system_if_flags(dev, IFF_UP, 0);
+ return system_if_flags(dev->ifname, IFF_UP, 0);
}
int system_if_down(struct device *dev)
{
- return system_if_flags(dev, 0, IFF_UP);
+ int ret = system_if_flags(dev->ifname, 0, IFF_UP);
+ dev->orig_settings.flags &= dev->settings.flags;
+ system_if_apply_settings(dev, &dev->orig_settings);
+ return ret;
}
int system_if_check(struct device *dev)
{
- device_set_present(dev, (system_if_resolve(dev) >= 0));
+ device_set_present(dev, (system_if_resolve(dev) > 0));
+ return 0;
+}
+
+struct device *
+system_if_get_parent(struct device *dev)
+{
+ char buf[64], *devname;
+ int ifindex, iflink, len;
+ FILE *f;
+
+ snprintf(buf, sizeof(buf), "/sys/class/net/%s/iflink", dev->ifname);
+ f = fopen(buf, "r");
+ if (!f)
+ return NULL;
+
+ len = fread(buf, 1, sizeof(buf) - 1, f);
+ fclose(f);
+
+ if (len <= 0)
+ return NULL;
+
+ buf[len] = 0;
+ iflink = strtoul(buf, NULL, 0);
+ ifindex = system_if_resolve(dev);
+ if (!iflink || iflink == ifindex)
+ return NULL;
+
+ devname = if_indextoname(iflink, buf);
+ if (!devname)
+ return NULL;
+
+ return device_get(devname, true);
+}
+
+static bool
+read_string_file(int dir_fd, const char *file, char *buf, int len)
+{
+ bool ret = false;
+ char *c;
+ int fd;
+
+ fd = openat(dir_fd, file, O_RDONLY);
+ if (fd < 0)
+ return false;
+
+retry:
+ len = read(fd, buf, len - 1);
+ if (len < 0) {
+ if (errno == EINTR)
+ goto retry;
+ } else if (len > 0) {
+ buf[len] = 0;
+
+ c = strchr(buf, '\n');
+ if (c)
+ *c = 0;
+
+ ret = true;
+ }
+
+ close(fd);
+
+ return ret;
+}
+
+static bool
+read_int_file(int dir_fd, const char *file, int *val)
+{
+ char buf[64];
+ bool ret = false;
+
+ ret = read_string_file(dir_fd, file, buf, sizeof(buf));
+ if (ret)
+ *val = strtoul(buf, NULL, 0);
+
+ return ret;
+}
+
+/* Assume advertised flags == supported flags */
+static const struct {
+ uint32_t mask;
+ const char *name;
+} ethtool_link_modes[] = {
+ { ADVERTISED_10baseT_Half, "10H" },
+ { ADVERTISED_10baseT_Full, "10F" },
+ { ADVERTISED_100baseT_Half, "100H" },
+ { ADVERTISED_100baseT_Full, "100F" },
+ { ADVERTISED_1000baseT_Half, "1000H" },
+ { ADVERTISED_1000baseT_Full, "1000F" },
+};
+
+static void system_add_link_modes(struct blob_buf *b, __u32 mask)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(ethtool_link_modes); i++) {
+ if (mask & ethtool_link_modes[i].mask)
+ blobmsg_add_string(b, NULL, ethtool_link_modes[i].name);
+ }
+}
+
+bool
+system_if_force_external(const char *ifname)
+{
+ char buf[64];
+ struct stat s;
+
+ snprintf(buf, sizeof(buf), "/sys/class/net/%s/phy80211", ifname);
+ return stat(buf, &s) == 0;
+}
+
+int
+system_if_dump_info(struct device *dev, struct blob_buf *b)
+{
+ struct ethtool_cmd ecmd;
+ struct ifreq ifr;
+ char buf[64], *s;
+ void *c;
+ int dir_fd, val = 0;
+
+ snprintf(buf, sizeof(buf), "/sys/class/net/%s", dev->ifname);
+ dir_fd = open(buf, O_DIRECTORY);
+
+ if (read_int_file(dir_fd, "carrier", &val))
+ blobmsg_add_u8(b, "link", !!val);
+
+ memset(&ecmd, 0, sizeof(ecmd));
+ memset(&ifr, 0, sizeof(ifr));
+ strcpy(ifr.ifr_name, dev->ifname);
+ ifr.ifr_data = (caddr_t) &ecmd;
+ ecmd.cmd = ETHTOOL_GSET;
+
+ if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) == 0) {
+ c = blobmsg_open_array(b, "link-advertising");
+ system_add_link_modes(b, ecmd.advertising);
+ blobmsg_close_array(b, c);
+
+ c = blobmsg_open_array(b, "link-supported");
+ system_add_link_modes(b, ecmd.supported);
+ blobmsg_close_array(b, c);
+
+ s = blobmsg_alloc_string_buffer(b, "speed", 8);
+ snprintf(s, 8, "%d%c", ethtool_cmd_speed(&ecmd),
+ ecmd.duplex == DUPLEX_HALF ? 'H' : 'F');
+ blobmsg_add_string_buffer(b);
+ }
+
+ close(dir_fd);
+ return 0;
+}
+
+int
+system_if_dump_stats(struct device *dev, struct blob_buf *b)
+{
+ const char *const counters[] = {
+ "collisions", "rx_frame_errors", "tx_compressed",
+ "multicast", "rx_length_errors", "tx_dropped",
+ "rx_bytes", "rx_missed_errors", "tx_errors",
+ "rx_compressed", "rx_over_errors", "tx_fifo_errors",
+ "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
+ "rx_dropped", "tx_aborted_errors", "tx_packets",
+ "rx_errors", "tx_bytes", "tx_window_errors",
+ "rx_fifo_errors", "tx_carrier_errors",
+ };
+ char buf[64];
+ int stats_dir;
+ int i, val = 0;
+
+ snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics", dev->ifname);
+ stats_dir = open(buf, O_DIRECTORY);
+ if (stats_dir < 0)
+ return -1;
+
+ for (i = 0; i < ARRAY_SIZE(counters); i++)
+ if (read_int_file(stats_dir, counters[i], &val))
+ blobmsg_add_u32(b, counters[i], val);
+
+ close(stats_dir);
return 0;
}
static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
{
- int alen = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
+ bool v4 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4);
+ int alen = v4 ? 4 : 16;
struct ifaddrmsg ifa = {
.ifa_family = (alen == 4) ? AF_INET : AF_INET6,
.ifa_prefixlen = addr->mask,
.ifa_index = dev->ifindex,
};
- struct nl_msg *msg = nlmsg_alloc_simple(cmd, 0);
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc_simple(cmd, 0);
if (!msg)
return -1;
nlmsg_append(msg, &ifa, sizeof(ifa), 0);
nla_put(msg, IFA_LOCAL, alen, &addr->addr);
+ if (v4) {
+ if (addr->broadcast)
+ nla_put_u32(msg, IFA_BROADCAST, addr->broadcast);
+ if (addr->point_to_point)
+ nla_put_u32(msg, IFA_ADDRESS, addr->point_to_point);
+ }
+
return system_rtnl_call(msg);
}
{
int alen = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
bool have_gw;
+ unsigned int flags = 0;
+ int ifindex = dev->ifindex;
if (alen == 4)
have_gw = !!route->nexthop.in.s_addr;
.rtm_family = (alen == 4) ? AF_INET : AF_INET6,
.rtm_dst_len = route->mask,
.rtm_table = RT_TABLE_MAIN,
- .rtm_protocol = RTPROT_BOOT,
+ .rtm_protocol = (route->flags & DEVADDR_KERNEL) ? RTPROT_KERNEL : RTPROT_BOOT,
.rtm_scope = scope,
.rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
};
+ struct nl_msg *msg;
- struct nl_msg *msg = nlmsg_alloc_simple(cmd, 0);
+ if (cmd == RTM_NEWROUTE)
+ flags |= NLM_F_CREATE | NLM_F_REPLACE;
+
+ msg = nlmsg_alloc_simple(cmd, flags);
if (!msg)
return -1;
if (route->mask)
nla_put(msg, RTA_DST, alen, &route->addr);
+ if (route->metric > 0)
+ nla_put_u32(msg, RTA_PRIORITY, route->metric);
+
if (have_gw)
nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
- if (route->flags & DEVADDR_DEVICE)
- nla_put_u32(msg, RTA_OIF, dev->ifindex);
+ nla_put_u32(msg, RTA_OIF, ifindex);
return system_rtnl_call(msg);
}
{
return system_rt(dev, route, RTM_DELROUTE);
}
+
+int system_flush_routes(void)
+{
+ const char *names[] = {
+ "/proc/sys/net/ipv4/route/flush",
+ "/proc/sys/net/ipv6/route/flush"
+ };
+ int fd, i;
+
+ for (i = 0; i < ARRAY_SIZE(names); i++) {
+ fd = open(names[i], O_WRONLY);
+ if (fd < 0)
+ continue;
+
+ write(fd, "-1", 2);
+ close(fd);
+ }
+ return 0;
+}
+
+time_t system_get_rtime(void)
+{
+ struct timespec ts;
+ struct timeval tv;
+
+ if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts) == 0)
+ return ts.tv_sec;
+
+ if (gettimeofday(&tv, NULL) == 0)
+ return tv.tv_sec;
+
+ return 0;
+}
+
+#ifndef IP_DF
+#define IP_DF 0x4000
+#endif
+
+static void tunnel_parm_init(struct ip_tunnel_parm *p)
+{
+ memset(p, 0, sizeof(*p));
+ p->iph.version = 4;
+ p->iph.ihl = 5;
+ p->iph.frag_off = htons(IP_DF);
+}
+
+static int tunnel_ioctl(const char *name, int cmd, void *p)
+{
+ struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+ ifr.ifr_ifru.ifru_data = p;
+ return ioctl(sock_ioctl, cmd, &ifr);
+}
+
+int system_del_ip_tunnel(const char *name)
+{
+ struct ip_tunnel_parm p;
+
+ tunnel_parm_init(&p);
+ return tunnel_ioctl(name, SIOCDELTUNNEL, &p);
+}
+
+static int parse_ipaddr(struct blob_attr *attr, __be32 *addr)
+{
+ if (!attr)
+ return 1;
+
+ return inet_pton(AF_INET, blobmsg_data(attr), (void *) addr);
+}
+
+
+int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
+{
+ struct blob_attr *tb[__TUNNEL_ATTR_MAX];
+ struct blob_attr *cur;
+ struct ip_tunnel_parm p;
+ const char *base, *str;
+ bool is_sit;
+
+ system_del_ip_tunnel(name);
+
+ tunnel_parm_init(&p);
+
+ blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
+ blob_data(attr), blob_len(attr));
+
+ if (!(cur = tb[TUNNEL_ATTR_TYPE]))
+ return -EINVAL;
+ str = blobmsg_data(cur);
+ is_sit = !strcmp(str, "sit");
+
+ if (is_sit) {
+ p.iph.protocol = IPPROTO_IPV6;
+ base = "sit0";
+ } else
+ return -EINVAL;
+
+ if (!parse_ipaddr(tb[TUNNEL_ATTR_LOCAL], &p.iph.saddr))
+ return -EINVAL;
+
+ if (!parse_ipaddr(tb[TUNNEL_ATTR_REMOTE], &p.iph.daddr))
+ return -EINVAL;
+
+ if ((cur = tb[TUNNEL_ATTR_TTL])) {
+ unsigned int val = blobmsg_get_u32(cur);
+
+ if (val > 255)
+ return -EINVAL;
+
+ p.iph.ttl = val;
+ }
+
+ strncpy(p.name, name, sizeof(p.name));
+ if (tunnel_ioctl(base, SIOCADDTUNNEL, &p) < 0)
+ return -1;
+
+#ifdef SIOCADD6RD
+ cur = tb[TUNNEL_ATTR_6RD_PREFIX];
+ if (cur && is_sit) {
+ unsigned int mask;
+ struct ip_tunnel_6rd p6;
+
+ memset(&p6, 0, sizeof(p6));
+
+ if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
+ &p6.prefix, &mask) || mask > 128)
+ return -EINVAL;
+ p6.prefixlen = mask;
+
+ if ((cur = tb[TUNNEL_ATTR_6RD_RELAY_PREFIX])) {
+ if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
+ &p6.relay_prefix, &mask) || mask > 32)
+ return -EINVAL;
+ p6.relay_prefixlen = mask;
+ }
+
+ if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
+ system_del_ip_tunnel(name);
+ return -1;
+ }
+ }
+#endif
+
+ return 0;
+}
projects / project / netifd.git / blobdiff