+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
+ * Copyright (C) 2013 Steven Barth <steven@midlink.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_link.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
+#include <linux/if_tunnel.h>
+#include <linux/ip6_tunnel.h>
#include <linux/ethtool.h>
+#include <linux/fib_rules.h>
+
+#ifndef RTN_FAILED_POLICY
+#define RTN_FAILED_POLICY 12
+#endif
#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;
return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
}
+static bool check_rule(struct nlmsghdr *hdr, int ifindex)
+{
+ return true;
+}
+
static int cb_clear_event(struct nl_msg *msg, void *arg)
{
struct clear_data *clr = arg;
cb = check_route;
break;
+ case RTM_GETRULE:
+ type = RTM_DELRULE;
+ if (hdr->nlmsg_type != RTM_NEWRULE)
+ return NL_SKIP;
+
+ cb = check_rule;
+ break;
default:
return NL_SKIP;
}
- if (!cb(hdr, clr->dev->ifindex))
+ if (!cb(hdr, clr->dev ? clr->dev->ifindex : 0))
return NL_SKIP;
- D(SYSTEM, "Remove %s from device %s\n",
- type == RTM_DELADDR ? "an address" : "a route",
- clr->dev->ifname);
+ if (type == RTM_DELRULE)
+ D(SYSTEM, "Remove a rule\n");
+ else
+ 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;
clr.type = type;
switch (type) {
case RTM_GETADDR:
+ case RTM_GETRULE:
clr.size = sizeof(struct rtgenmsg);
break;
case RTM_GETROUTE:
system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
bridge->ifname, cfg->igmp_snoop ? "1" : "0");
+ args[0] = BRCTL_SET_BRIDGE_PRIORITY;
+ args[1] = cfg->priority;
+ system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
+
if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
args[0] = BRCTL_SET_AGEING_TIME;
args[1] = sec_to_jiffies(cfg->ageing_time);
return 0;
}
+int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
+{
+ struct nl_msg *msg;
+ struct nlattr *linkinfo, *data;
+ struct ifinfomsg iim = { .ifi_family = AF_INET };
+ int ifindex = system_if_resolve(dev);
+ int i, rv;
+ static const struct {
+ const char *name;
+ enum macvlan_mode val;
+ } modes[] = {
+ { "private", MACVLAN_MODE_PRIVATE },
+ { "vepa", MACVLAN_MODE_VEPA },
+ { "bridge", MACVLAN_MODE_BRIDGE },
+ { "passthru", MACVLAN_MODE_PASSTHRU },
+ };
+
+ if (ifindex == 0)
+ return -ENOENT;
+
+ msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
+
+ if (!msg)
+ return -1;
+
+ nlmsg_append(msg, &iim, sizeof(iim), 0);
+
+ if (cfg->flags & MACVLAN_OPT_MACADDR)
+ nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
+ nla_put(msg, IFLA_IFNAME, IFNAMSIZ, macvlan->ifname);
+ nla_put_u32(msg, IFLA_LINK, ifindex);
+
+ if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
+ goto nla_put_failure;
+
+ nla_put(msg, IFLA_INFO_KIND, strlen("macvlan"), "macvlan");
+
+ if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
+ goto nla_put_failure;
+
+ if (cfg->mode) {
+ for (i = 0; i < ARRAY_SIZE(modes); i++) {
+ if (strcmp(cfg->mode, modes[i].name) != 0)
+ continue;
+
+ nla_put_u32(msg, IFLA_MACVLAN_MODE, modes[i].val);
+ break;
+ }
+ }
+
+ nla_nest_end(msg, data);
+ nla_nest_end(msg, linkinfo);
+
+ rv = system_rtnl_call(msg);
+ if (rv)
+ D(SYSTEM, "Error adding macvlan '%s' over '%s': %d\n", macvlan->ifname, dev->ifname, rv);
+
+ return rv;
+
+nla_put_failure:
+ nlmsg_free(msg);
+ return -ENOMEM;
+}
+
+int system_macvlan_del(struct device *macvlan)
+{
+ struct nl_msg *msg;
+ struct ifinfomsg iim;
+
+ iim.ifi_family = AF_INET;
+ iim.ifi_index = 0;
+
+ msg = nlmsg_alloc_simple(RTM_DELLINK, 0);
+
+ if (!msg)
+ return -1;
+
+ nlmsg_append(msg, &iim, sizeof(iim), 0);
+
+ nla_put(msg, IFLA_INFO_KIND, strlen("macvlan"), "macvlan");
+ nla_put(msg, IFLA_IFNAME, sizeof(macvlan->ifname), macvlan->ifname);
+
+ system_rtnl_call(msg);
+
+ return 0;
+}
+
static int system_vlan(struct device *dev, int id)
{
struct vlan_ioctl_args ifr = {
}
if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
- memcpy(s->macaddr, &ifr.ifr_hwaddr, sizeof(s->macaddr));
+ memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
s->flags |= DEV_OPT_MACADDR;
}
}
-static void
+void
system_if_apply_settings(struct device *dev, struct device_settings *s)
{
struct ifreq ifr;
if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
s->flags &= ~DEV_OPT_TXQUEUELEN;
}
- if (s->flags & DEV_OPT_MACADDR) {
- memcpy(&ifr.ifr_hwaddr, s->macaddr, sizeof(s->macaddr));
+ 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_down(struct device *dev)
{
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;
}
}
static bool
-read_int_file(int dir_fd, const char *file, int *val)
+read_uint64_file(int dir_fd, const char *file, uint64_t *val)
{
char buf[64];
bool ret = false;
ret = read_string_file(dir_fd, file, buf, sizeof(buf));
if (ret)
- *val = strtoul(buf, NULL, 0);
+ *val = strtoull(buf, NULL, 0);
return ret;
}
}
}
+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 ifreq ifr;
char buf[64], *s;
void *c;
- int dir_fd, val = 0;
+ int dir_fd;
+ uint64_t 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))
+ if (read_uint64_file(dir_fd, "carrier", &val))
blobmsg_add_u8(b, "link", !!val);
memset(&ecmd, 0, sizeof(ecmd));
};
char buf[64];
int stats_dir;
- int i, val = 0;
+ int i;
+ uint64_t val = 0;
snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics", dev->ifname);
stats_dir = open(buf, O_DIRECTORY);
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);
+ if (read_uint64_file(stats_dir, counters[i], &val))
+ blobmsg_add_u64(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;
+ unsigned int flags = 0;
struct ifaddrmsg ifa = {
.ifa_family = (alen == 4) ? AF_INET : AF_INET6,
.ifa_prefixlen = addr->mask,
};
struct nl_msg *msg;
+ if (cmd == RTM_NEWADDR)
+ flags |= NLM_F_CREATE | NLM_F_REPLACE;
- msg = nlmsg_alloc_simple(cmd, 0);
+ msg = nlmsg_alloc_simple(cmd, flags);
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);
+ } else {
+ time_t now = system_get_rtime();
+ struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
+
+ if (addr->preferred_until) {
+ int64_t preferred = addr->preferred_until - now;
+ if (preferred < 0)
+ preferred = 0;
+ else if (preferred > UINT32_MAX)
+ preferred = UINT32_MAX;
+
+ cinfo.ifa_prefered = preferred;
+ }
+
+ if (addr->valid_until) {
+ int64_t valid = addr->valid_until - now;
+ if (valid <= 0)
+ return -1;
+ else if (valid > UINT32_MAX)
+ valid = UINT32_MAX;
+
+ cinfo.ifa_valid = valid;
+ }
+
+ nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
+ }
+
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;
unsigned char scope = (cmd == RTM_DELROUTE) ? RT_SCOPE_NOWHERE :
(have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
+ unsigned int table = (route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))
+ ? route->table : RT_TABLE_MAIN;
+
struct rtmsg rtm = {
.rtm_family = (alen == 4) ? AF_INET : AF_INET6,
.rtm_dst_len = route->mask,
- .rtm_table = RT_TABLE_MAIN,
- .rtm_protocol = RTPROT_BOOT,
+ .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
+ .rtm_protocol = (route->flags & DEVADDR_KERNEL) ? RTPROT_KERNEL : RTPROT_STATIC,
.rtm_scope = scope,
.rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
};
struct nl_msg *msg;
- if (cmd == RTM_NEWROUTE)
+ if (cmd == RTM_NEWROUTE) {
flags |= NLM_F_CREATE | NLM_F_REPLACE;
+ if (!dev) { // Add null-route
+ rtm.rtm_scope = RT_SCOPE_UNIVERSE;
+ rtm.rtm_type = RTN_UNREACHABLE;
+ }
+ }
+
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)
+ 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);
+ if (dev)
+ nla_put_u32(msg, RTA_OIF, dev->ifindex);
+
+ if (table >= 256)
+ nla_put_u32(msg, RTA_TABLE, table);
return system_rtnl_call(msg);
}
return 0;
}
+bool system_resolve_rt_table(const char *name, unsigned int *id)
+{
+ FILE *f;
+ char *e, buf[128];
+ unsigned int n, table = RT_TABLE_UNSPEC;
+
+ /* first try to parse table as number */
+ if ((n = strtoul(name, &e, 0)) > 0 && !*e)
+ table = n;
+
+ /* handle well known aliases */
+ else if (!strcmp(name, "default"))
+ table = RT_TABLE_DEFAULT;
+ else if (!strcmp(name, "main"))
+ table = RT_TABLE_MAIN;
+ else if (!strcmp(name, "local"))
+ table = RT_TABLE_LOCAL;
+
+ /* try to look up name in /etc/iproute2/rt_tables */
+ else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
+ {
+ while (fgets(buf, sizeof(buf) - 1, f) != NULL)
+ {
+ if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
+ continue;
+
+ n = strtoul(e, NULL, 10);
+ e = strtok(NULL, " \t\n");
+
+ if (e && !strcmp(e, name))
+ {
+ table = n;
+ break;
+ }
+ }
+
+ fclose(f);
+ }
+
+ if (table == RT_TABLE_UNSPEC)
+ return false;
+
+ /* do not consider main table special */
+ if (table == RT_TABLE_MAIN)
+ table = RT_TABLE_UNSPEC;
+
+ *id = table;
+ return true;
+}
+
+static int system_iprule(struct iprule *rule, int cmd)
+{
+ int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
+
+ struct nl_msg *msg;
+ struct rtmsg rtm = {
+ .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
+ .rtm_protocol = RTPROT_STATIC,
+ .rtm_scope = RT_SCOPE_UNIVERSE,
+ .rtm_table = RT_TABLE_UNSPEC,
+ .rtm_type = RTN_UNSPEC,
+ .rtm_flags = 0,
+ };
+
+ if (cmd == RTM_NEWRULE) {
+ rtm.rtm_type = RTN_UNICAST;
+ rtm.rtm_flags |= NLM_F_REPLACE | NLM_F_EXCL;
+ }
+
+ if (rule->invert)
+ rtm.rtm_flags |= FIB_RULE_INVERT;
+
+ if (rule->flags & IPRULE_SRC)
+ rtm.rtm_src_len = rule->src_mask;
+
+ if (rule->flags & IPRULE_DEST)
+ rtm.rtm_dst_len = rule->dest_mask;
+
+ if (rule->flags & IPRULE_TOS)
+ rtm.rtm_tos = rule->tos;
+
+ if (rule->flags & IPRULE_LOOKUP) {
+ if (rule->lookup < 256)
+ rtm.rtm_table = rule->lookup;
+ }
+
+ if (rule->flags & IPRULE_ACTION)
+ rtm.rtm_type = rule->action;
+ else if (rule->flags & IPRULE_GOTO)
+ rtm.rtm_type = FR_ACT_GOTO;
+ else if (!(rule->flags & (IPRULE_LOOKUP | IPRULE_ACTION | IPRULE_GOTO)))
+ rtm.rtm_type = FR_ACT_NOP;
+
+ msg = nlmsg_alloc_simple(cmd, NLM_F_REQUEST);
+
+ if (!msg)
+ return -1;
+
+ nlmsg_append(msg, &rtm, sizeof(rtm), 0);
+
+ if (rule->flags & IPRULE_IN)
+ nla_put(msg, FRA_IFNAME, strlen(rule->in_dev) + 1, rule->in_dev);
+
+ if (rule->flags & IPRULE_OUT)
+ nla_put(msg, FRA_OIFNAME, strlen(rule->out_dev) + 1, rule->out_dev);
+
+ if (rule->flags & IPRULE_SRC)
+ nla_put(msg, FRA_SRC, alen, &rule->src_addr);
+
+ if (rule->flags & IPRULE_DEST)
+ nla_put(msg, FRA_DST, alen, &rule->dest_addr);
+
+ if (rule->flags & IPRULE_PRIORITY)
+ nla_put_u32(msg, FRA_PRIORITY, rule->priority);
+ else if (cmd == RTM_NEWRULE)
+ nla_put_u32(msg, FRA_PRIORITY, rule->order);
+
+ if (rule->flags & IPRULE_FWMARK)
+ nla_put_u32(msg, FRA_FWMARK, rule->fwmark);
+
+ if (rule->flags & IPRULE_FWMASK)
+ nla_put_u32(msg, FRA_FWMASK, rule->fwmask);
+
+ if (rule->flags & IPRULE_LOOKUP) {
+ if (rule->lookup >= 256)
+ nla_put_u32(msg, FRA_TABLE, rule->lookup);
+ }
+
+ if (rule->flags & IPRULE_GOTO)
+ nla_put_u32(msg, FRA_GOTO, rule->gotoid);
+
+ return system_rtnl_call(msg);
+}
+
+int system_add_iprule(struct iprule *rule)
+{
+ return system_iprule(rule, RTM_NEWRULE);
+}
+
+int system_del_iprule(struct iprule *rule)
+{
+ return system_iprule(rule, RTM_DELRULE);
+}
+
+int system_flush_iprules(void)
+{
+ int rv = 0;
+ struct iprule rule;
+
+ system_if_clear_entries(NULL, RTM_GETRULE, AF_INET);
+ system_if_clear_entries(NULL, RTM_GETRULE, AF_INET6);
+
+ memset(&rule, 0, sizeof(rule));
+
+
+ rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
+
+ rule.priority = 0;
+ rule.lookup = RT_TABLE_LOCAL;
+ rv |= system_iprule(&rule, RTM_NEWRULE);
+
+ rule.priority = 32766;
+ rule.lookup = RT_TABLE_MAIN;
+ rv |= system_iprule(&rule, RTM_NEWRULE);
+
+ rule.priority = 32767;
+ rule.lookup = RT_TABLE_DEFAULT;
+ rv |= system_iprule(&rule, RTM_NEWRULE);
+
+
+ rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
+
+ rule.priority = 0;
+ rule.lookup = RT_TABLE_LOCAL;
+ rv |= system_iprule(&rule, RTM_NEWRULE);
+
+ rule.priority = 32766;
+ rule.lookup = RT_TABLE_MAIN;
+ rv |= system_iprule(&rule, RTM_NEWRULE);
+
+ return rv;
+}
+
+bool system_resolve_iprule_action(const char *action, unsigned int *id)
+{
+ char *e;
+ unsigned int n;
+
+ if (!strcmp(action, "local"))
+ n = RTN_LOCAL;
+ else if (!strcmp(action, "nat"))
+ n = RTN_NAT;
+ else if (!strcmp(action, "broadcast"))
+ n = RTN_BROADCAST;
+ else if (!strcmp(action, "anycast"))
+ n = RTN_ANYCAST;
+ else if (!strcmp(action, "multicast"))
+ n = RTN_MULTICAST;
+ else if (!strcmp(action, "prohibit"))
+ n = RTN_PROHIBIT;
+ else if (!strcmp(action, "unreachable"))
+ n = RTN_UNREACHABLE;
+ else if (!strcmp(action, "blackhole"))
+ n = RTN_BLACKHOLE;
+ else if (!strcmp(action, "xresolve"))
+ n = RTN_XRESOLVE;
+ else if (!strcmp(action, "unicast"))
+ n = RTN_UNICAST;
+ else if (!strcmp(action, "throw"))
+ n = RTN_THROW;
+ else if (!strcmp(action, "failed_policy"))
+ n = RTN_FAILED_POLICY;
+ else {
+ n = strtoul(action, &e, 0);
+ if (!e || *e || e == action || n > 255)
+ return false;
+ }
+
+ *id = n;
+ return true;
+}
+
time_t system_get_rtime(void)
{
struct timespec ts;
return 0;
}
+
+#ifndef IP_DF
+#define IP_DF 0x4000
+#endif
+
+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)
+{
+ return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
+}
+
+int system_update_ipv6_mtu(struct device *dev, int mtu)
+{
+ int ret = -1;
+ char buf[64];
+ snprintf(buf, sizeof(buf), "/proc/sys/net/ipv6/conf/%s/mtu",
+ dev->ifname);
+
+ int fd = open(buf, O_RDWR);
+ ssize_t len = read(fd, buf, sizeof(buf) - 1);
+ if (len < 0)
+ goto out;
+
+ buf[len] = 0;
+ ret = atoi(buf);
+
+ if (!mtu || ret <= mtu)
+ goto out;
+
+ lseek(fd, 0, SEEK_SET);
+ if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) <= 0)
+ ret = -1;
+
+out:
+ close(fd);
+ return ret;
+}
+
+
+int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
+{
+ struct blob_attr *tb[__TUNNEL_ATTR_MAX];
+ struct blob_attr *cur;
+ const char *str;
+
+ system_del_ip_tunnel(name);
+
+ 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);
+
+ unsigned int ttl = 0;
+ if ((cur = tb[TUNNEL_ATTR_TTL]) && (ttl = blobmsg_get_u32(cur)) > 255)
+ return -EINVAL;
+
+ unsigned int link = 0;
+ if ((cur = tb[TUNNEL_ATTR_LINK])) {
+ struct interface *iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
+ if (!iface)
+ return -EINVAL;
+
+ if (iface->l3_dev.dev)
+ link = iface->l3_dev.dev->ifindex;
+ }
+
+
+ if (!strcmp(str, "sit")) {
+ struct ip_tunnel_parm p = {
+ .link = link,
+ .iph = {
+ .version = 4,
+ .ihl = 5,
+ .frag_off = htons(IP_DF),
+ .protocol = IPPROTO_IPV6,
+ .ttl = ttl
+ }
+ };
+
+ if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
+ inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
+ return -EINVAL;
+
+ if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
+ inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
+ return -EINVAL;
+
+ strncpy(p.name, name, sizeof(p.name));
+ if (tunnel_ioctl("sit0", SIOCADDTUNNEL, &p) < 0)
+ return -1;
+
+#ifdef SIOCADD6RD
+ if ((cur = tb[TUNNEL_ATTR_6RD_PREFIX])) {
+ 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
+ } else if (!strcmp(str, "ipip6")) {
+ struct ip6_tnl_parm p = {
+ .link = link,
+ .proto = IPPROTO_IPIP,
+ .hop_limit = (ttl) ? ttl : 64,
+ .encap_limit = 4,
+ };
+
+ if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
+ inet_pton(AF_INET6, blobmsg_data(cur), &p.laddr) < 1)
+ return -EINVAL;
+
+ if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
+ inet_pton(AF_INET6, blobmsg_data(cur), &p.raddr) < 1)
+ return -EINVAL;
+
+ strncpy(p.name, name, sizeof(p.name));
+ if (tunnel_ioctl("ip6tnl0", SIOCADDTUNNEL, &p) < 0)
+ return -1;
+ } else
+ return -EINVAL;
+
+ return 0;
+}
projects / project / netifd.git / blobdiff