+/*
+ * 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/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>
static int cb_rtnl_event(struct nl_msg *msg, void *arg);
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)
{
static void system_set_dev_sysctl(const char *path, const char *device, const char *val)
{
- static char buf[256];
-
- snprintf(buf, sizeof(buf), path, val);
- system_set_sysctl(buf, val);
+ snprintf(dev_buf, sizeof(dev_buf), path, device);
+ system_set_sysctl(dev_buf, val);
}
static void system_set_disable_ipv6(struct device *dev, const char *val)
if (dev->type != &simple_device_type)
return;
+ if (add && system_if_force_external(dev->ifname))
+ return;
+
device_set_present(dev, add);
}
static int system_rtnl_call(struct nl_msg *msg)
{
- int s = -(nl_send_auto_complete(sock_rtnl, msg)
- || nl_wait_for_ack(sock_rtnl));
+ int ret;
+
+ ret = nl_send_auto_complete(sock_rtnl, msg);
nlmsg_free(msg);
- return s;
+
+ if (ret < 0)
+ return ret;
+
+ return nl_wait_for_ack(sock_rtnl);
}
int system_bridge_delbr(struct device *bridge)
static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
{
struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
if (dev)
ifr.ifr_ifindex = dev->ifindex;
else
return ioctl(sock_ioctl, cmd, &ifr);
}
-int system_bridge_addif(struct device *bridge, struct device *dev)
-{
- system_set_disable_ipv6(dev, "1");
- return system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
-}
-
-int system_bridge_delif(struct device *bridge, struct device *dev)
-{
- system_set_disable_ipv6(dev, "0");
- return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
-}
-
static bool system_is_bridge(const char *name, char *buf, int buflen)
{
struct stat st;
return path + 1;
}
+int system_bridge_addif(struct device *bridge, struct device *dev)
+{
+ 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)
+{
+ 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;
static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
{
struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
ifr.ifr_flags |= add;
static bool check_route(struct nlmsghdr *hdr, int ifindex)
{
+ struct rtmsg *r = NLMSG_DATA(hdr);
struct nlattr *tb[__RTA_MAX];
+ if (r->rtm_protocol == RTPROT_KERNEL &&
+ r->rtm_family == AF_INET6)
+ return false;
+
nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
if (!tb[RTA_OIF])
return false;
}
static void
-system_if_apply_settings(struct device *dev)
+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));
- if (dev->flags & DEV_OPT_MTU) {
- ifr.ifr_mtu = dev->mtu;
- ioctl(sock_ioctl, SIOCSIFMTU, &ifr);
+
+ if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
+ s->mtu = ifr.ifr_mtu;
+ s->flags |= DEV_OPT_MTU;
}
- if (dev->flags & DEV_OPT_TXQUEUELEN) {
- ifr.ifr_qlen = dev->txqueuelen;
- ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr);
+
+ if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
+ s->txqueuelen = ifr.ifr_qlen;
+ s->flags |= DEV_OPT_TXQUEUELEN;
}
- if (dev->flags & DEV_OPT_MACADDR) {
- memcpy(&ifr.ifr_hwaddr, dev->macaddr, sizeof(dev->macaddr));
- ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr);
+
+ if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
+ memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
+ s->flags |= DEV_OPT_MACADDR;
}
+}
- dev->ifindex = system_if_resolve(dev);
+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 (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) && !dev->external) {
+ 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_apply_settings(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->ifname, IFF_UP, 0);
}
int system_if_down(struct device *dev)
{
- return system_if_flags(dev->ifname, 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)
}
static bool
-read_int_file(int dir_fd, const char *file, int *val)
+read_string_file(int dir_fd, const char *file, char *buf, int len)
{
- char buf[64];
- int len, fd;
bool ret = false;
+ char *c;
+ int fd;
fd = openat(dir_fd, file, O_RDONLY);
if (fd < 0)
return false;
retry:
- len = read(fd, buf, sizeof(buf));
+ len = read(fd, buf, len - 1);
if (len < 0) {
if (errno == EINTR)
goto retry;
} else if (len > 0) {
buf[len] = 0;
- *val = strtoul(buf, NULL, 0);
+
+ c = strchr(buf, '\n');
+ if (c)
+ *c = 0;
+
ret = true;
}
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)
{
- char buf[64];
+ 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);
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;
}
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,
struct nl_msg *msg;
- dev = addr->device;
- if (dev) {
- if (!dev->ifindex)
- return -1;
-
- ifa.ifa_index = dev->ifindex;
- }
-
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);
}
.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_STATIC,
.rtm_scope = scope,
.rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
};
if (cmd == RTM_NEWROUTE)
flags |= NLM_F_CREATE | NLM_F_REPLACE;
- dev = route->device;
- if (dev) {
- if (!dev->ifindex)
- return -1;
-
- ifindex = dev->ifindex;
- }
-
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, ifindex);
+ nla_put_u32(msg, RTA_OIF, ifindex);
return system_rtnl_call(msg);
}
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;
+}