/*
* 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>
+ * Copyright (C) 2014 Gioacchino Mazzurco <gio@eigenlab.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
#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>
+#include <linux/version.h>
+
+#ifndef RTN_FAILED_POLICY
+#define RTN_FAILED_POLICY 12
+#endif
-#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <glob.h>
struct event_socket {
struct uloop_fd uloop;
struct nl_sock *sock;
- struct nl_cb *cb;
+ int bufsize;
};
static int sock_ioctl = -1;
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);
+ int err;
+ socklen_t errlen = sizeof(err);
+
+ if (!u->error) {
+ nl_recvmsgs_default(ev->sock);
+ return;
+ }
+
+ if (getsockopt(u->fd, SOL_SOCKET, SO_ERROR, (void *)&err, &errlen))
+ goto abort;
+
+ switch(err) {
+ case ENOBUFS:
+ // Increase rx buffer size on netlink socket
+ ev->bufsize *= 2;
+ if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
+ goto abort;
+
+ // Request full dump since some info got dropped
+ struct rtgenmsg msg = { .rtgen_family = AF_UNSPEC };
+ nl_send_simple(ev->sock, RTM_GETLINK, NLM_F_DUMP, &msg, sizeof(msg));
+ break;
+
+ default:
+ goto abort;
+ }
+ u->error = false;
+ return;
+
+abort:
+ uloop_fd_delete(&ev->uloop);
+ return;
}
static struct nl_sock *
static bool
create_raw_event_socket(struct event_socket *ev, int protocol, int groups,
- uloop_fd_handler cb)
+ uloop_fd_handler cb, int flags)
{
ev->sock = create_socket(protocol, groups);
if (!ev->sock)
ev->uloop.fd = nl_socket_get_fd(ev->sock);
ev->uloop.cb = cb;
- uloop_fd_add(&ev->uloop, ULOOP_READ | ULOOP_EDGE_TRIGGER);
+ if (uloop_fd_add(&ev->uloop, ULOOP_READ|flags))
+ return false;
+
return true;
}
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)
+ if (!create_raw_event_socket(ev, protocol, 0, handler_nl_event, ULOOP_ERROR_CB))
+ return false;
+
+ // Install the valid custom callback handler
+ nl_socket_modify_cb(ev->sock, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
+
+ // Disable sequence number checking on event sockets
+ nl_socket_disable_seq_check(ev->sock);
+
+ // Increase rx buffer size to 65K on event sockets
+ ev->bufsize = 65535;
+ if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
return false;
- nl_cb_set(ev->cb, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
+ return true;
+}
+
+static bool
+system_rtn_aton(const char *src, unsigned int *dst)
+{
+ char *e;
+ unsigned int n;
+
+ if (!strcmp(src, "local"))
+ n = RTN_LOCAL;
+ else if (!strcmp(src, "nat"))
+ n = RTN_NAT;
+ else if (!strcmp(src, "broadcast"))
+ n = RTN_BROADCAST;
+ else if (!strcmp(src, "anycast"))
+ n = RTN_ANYCAST;
+ else if (!strcmp(src, "multicast"))
+ n = RTN_MULTICAST;
+ else if (!strcmp(src, "prohibit"))
+ n = RTN_PROHIBIT;
+ else if (!strcmp(src, "unreachable"))
+ n = RTN_UNREACHABLE;
+ else if (!strcmp(src, "blackhole"))
+ n = RTN_BLACKHOLE;
+ else if (!strcmp(src, "xresolve"))
+ n = RTN_XRESOLVE;
+ else if (!strcmp(src, "unicast"))
+ n = RTN_UNICAST;
+ else if (!strcmp(src, "throw"))
+ n = RTN_THROW;
+ else if (!strcmp(src, "failed_policy"))
+ n = RTN_FAILED_POLICY;
+ else {
+ n = strtoul(src, &e, 0);
+ if (!e || *e || e == src || n > 255)
+ return false;
+ }
+
+ *dst = n;
+ return true;
+}
+
+static bool
+system_tos_aton(const char *src, unsigned *dst)
+{
+ char *e;
+
+ *dst = strtoul(src, &e, 16);
+ if (e == src || *e || *dst > 255)
+ return false;
- return create_raw_event_socket(ev, protocol, 0, handler_nl_event);
+ return true;
}
int system_init(void)
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);
+ system_fd_set_cloexec(sock_ioctl);
// Prepare socket for routing / address control
sock_rtnl = create_socket(NETLINK_ROUTE, 0);
return -1;
if (!create_raw_event_socket(&hotplug_event, NETLINK_KOBJECT_UEVENT, 1,
- handle_hotplug_event))
+ handle_hotplug_event, 0))
return -1;
// Receive network link events form kernel
if (fd < 0)
return;
- write(fd, val, strlen(val));
+ if (write(fd, val, strlen(val))) {}
close(fd);
}
system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev->ifname, val);
}
+static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
+{
+ int fd = -1, ret = -1;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ goto out;
+
+ ssize_t len = read(fd, buf, buf_sz - 1);
+ if (len < 0)
+ goto out;
+
+ ret = buf[len] = 0;
+
+out:
+ if (fd >= 0)
+ close(fd);
+
+ return ret;
+}
+
+static int
+system_get_dev_sysctl(const char *path, const char *device, char *buf, const size_t buf_sz)
+{
+ snprintf(dev_buf, sizeof(dev_buf), path, device);
+ return system_get_sysctl(dev_buf, buf, buf_sz);
+}
+
+static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t buf_sz)
+{
+ return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
+ dev->ifname, buf, buf_sz);
+}
+
+#ifndef IFF_LOWER_UP
+#define IFF_LOWER_UP 0x10000
+#endif
+
// Evaluate netlink messages
static int cb_rtnl_event(struct nl_msg *msg, void *arg)
{
struct ifinfomsg *ifi = NLMSG_DATA(nh);
struct nlattr *nla[__IFLA_MAX];
- if (nh->nlmsg_type != RTM_DELLINK && nh->nlmsg_type != RTM_NEWLINK)
+ if (nh->nlmsg_type != RTM_NEWLINK)
goto out;
nlmsg_parse(nh, sizeof(*ifi), nla, __IFLA_MAX - 1, NULL);
if (!nla[IFLA_IFNAME])
goto out;
- struct device *dev = device_get(RTA_DATA(nla[IFLA_IFNAME]), false);
+ struct device *dev = device_get(nla_data(nla[IFLA_IFNAME]), false);
if (!dev)
goto out;
- dev->ifindex = ifi->ifi_index;
- /* TODO: parse link status */
+ device_set_ifindex(dev, ifi->ifi_index);
+ device_set_link(dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
out:
return 0;
return path + 1;
}
+static void system_bridge_set_wireless(const char *bridge, const char *dev)
+{
+ snprintf(dev_buf, sizeof(dev_buf),
+ "/sys/devices/virtual/net/%s/brif/%s/multicast_to_unicast",
+ bridge, dev);
+ system_set_sysctl(dev_buf, "1");
+}
+
int system_bridge_addif(struct device *bridge, struct device *dev)
{
char *oldbr;
+ int ret = 0;
- 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;
+ if (!oldbr || strcmp(oldbr, bridge->ifname) != 0)
+ ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
- return system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
+ if (dev->wireless)
+ system_bridge_set_wireless(bridge->ifname, dev->ifname);
+
+ return ret;
}
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 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;
hdr->nlmsg_flags = NLM_F_REQUEST;
- if (!nl_send_auto_complete(sock_rtnl, clr->msg))
- nl_wait_for_ack(sock_rtnl);
+ nl_socket_disable_auto_ack(sock_rtnl);
+ nl_send_auto_complete(sock_rtnl, clr->msg);
+ nl_socket_enable_auto_ack(sock_rtnl);
return NL_SKIP;
}
clr.type = type;
switch (type) {
case RTM_GETADDR:
+ case RTM_GETRULE:
clr.size = sizeof(struct rtgenmsg);
break;
case RTM_GETROUTE:
static char buf[256];
char *bridge;
- if (dev->external)
- return;
-
- dev->ifindex = system_if_resolve(dev);
- if (!dev->ifindex)
+ device_set_ifindex(dev, system_if_resolve(dev));
+ if (dev->external || !dev->ifindex)
return;
system_if_flags(dev->ifname, 0, IFF_UP);
system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
bridge->ifname, cfg->igmp_snoop ? "1" : "0");
+ system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
+ 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_UNSPEC, };
+ 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_string(msg, IFLA_IFNAME, macvlan->ifname);
+ nla_put_u32(msg, IFLA_LINK, ifindex);
+
+ if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
+ goto nla_put_failure;
+
+ nla_put_string(msg, IFLA_INFO_KIND, "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;
+}
+
+static int system_link_del(const char *ifname)
+{
+ struct nl_msg *msg;
+ struct ifinfomsg iim = {
+ .ifi_family = AF_UNSPEC,
+ .ifi_index = 0,
+ };
+
+ msg = nlmsg_alloc_simple(RTM_DELLINK, NLM_F_REQUEST);
+
+ if (!msg)
+ return -1;
+
+ nlmsg_append(msg, &iim, sizeof(iim), 0);
+ nla_put_string(msg, IFLA_IFNAME, ifname);
+ return system_rtnl_call(msg);
+}
+
+int system_macvlan_del(struct device *macvlan)
+{
+ return system_link_del(macvlan->ifname);
+}
+
static int system_vlan(struct device *dev, int id)
{
struct vlan_ioctl_args ifr = {
return system_vlan(dev, -1);
}
+int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlandev_config *cfg)
+{
+ struct nl_msg *msg;
+ struct nlattr *linkinfo, *data;
+ struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
+ int ifindex = system_if_resolve(dev);
+ int rv;
+
+ 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);
+ nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
+ nla_put_u32(msg, IFLA_LINK, ifindex);
+
+ if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
+ goto nla_put_failure;
+
+ nla_put_string(msg, IFLA_INFO_KIND, "vlan");
+
+ if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
+ goto nla_put_failure;
+
+ nla_put_u16(msg, IFLA_VLAN_ID, cfg->vid);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
+ nla_put_u16(msg, IFLA_VLAN_PROTOCOL, htons(cfg->proto));
+#else
+ if(cfg->proto == VLAN_PROTO_8021AD)
+ netifd_log_message(L_WARNING, "%s Your kernel is older than linux 3.10.0, 802.1ad is not supported defaulting to 802.1q", vlandev->type->name);
+#endif
+
+ nla_nest_end(msg, data);
+ nla_nest_end(msg, linkinfo);
+
+ rv = system_rtnl_call(msg);
+ if (rv)
+ D(SYSTEM, "Error adding vlandev '%s' over '%s': %d\n", vlandev->ifname, dev->ifname, rv);
+
+ return rv;
+
+nla_put_failure:
+ nlmsg_free(msg);
+ return -ENOMEM;
+}
+
+int system_vlandev_del(struct device *vlandev)
+{
+ return system_link_del(vlandev->ifname);
+}
+
static void
system_if_get_settings(struct device *dev, struct device_settings *s)
{
struct ifreq ifr;
+ char buf[10];
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
s->flags |= DEV_OPT_MACADDR;
}
+
+ if (!system_get_disable_ipv6(dev, buf, sizeof(buf))) {
+ s->ipv6 = !strtoul(buf, NULL, 0);
+ s->flags |= DEV_OPT_IPV6;
+ }
+
+ if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
+ s->promisc = ifr.ifr_flags & IFF_PROMISC;
+ s->flags |= DEV_OPT_PROMISC;
+ }
}
void
-system_if_apply_settings(struct device *dev, struct device_settings *s)
+system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
{
struct ifreq ifr;
+ if (!apply_mask)
+ return;
+
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
- if (s->flags & DEV_OPT_MTU) {
+ if (s->flags & DEV_OPT_MTU & apply_mask) {
ifr.ifr_mtu = s->mtu;
if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
s->flags &= ~DEV_OPT_MTU;
}
- if (s->flags & DEV_OPT_TXQUEUELEN) {
+ if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
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) {
+ if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !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;
}
+ if (s->flags & DEV_OPT_IPV6 & apply_mask)
+ system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
+ if (s->flags & DEV_OPT_PROMISC & apply_mask) {
+ if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
+ !s->promisc ? IFF_PROMISC : 0) < 0)
+ s->flags &= ~DEV_OPT_PROMISC;
+ }
}
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);
+ system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
+ device_set_ifindex(dev, system_if_resolve(dev));
return system_if_flags(dev->ifname, IFF_UP, 0);
}
{
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);
+ system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
return ret;
}
+struct if_check_data {
+ struct device *dev;
+ int pending;
+ int ret;
+};
+
+static int cb_if_check_valid(struct nl_msg *msg, void *arg)
+{
+ struct nlmsghdr *nh = nlmsg_hdr(msg);
+ struct ifinfomsg *ifi = NLMSG_DATA(nh);
+ struct if_check_data *chk = (struct if_check_data *)arg;
+
+ if (nh->nlmsg_type != RTM_NEWLINK)
+ return NL_SKIP;
+
+ device_set_present(chk->dev, ifi->ifi_index > 0 ? true : false);
+ device_set_link(chk->dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
+
+ return NL_OK;
+}
+
+static int cb_if_check_ack(struct nl_msg *msg, void *arg)
+{
+ struct if_check_data *chk = (struct if_check_data *)arg;
+ chk->pending = 0;
+ return NL_STOP;
+}
+
+static int cb_if_check_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
+{
+ struct if_check_data *chk = (struct if_check_data *)arg;
+
+ device_set_present(chk->dev, false);
+ device_set_link(chk->dev, false);
+ chk->pending = err->error;
+
+ return NL_STOP;
+}
+
int system_if_check(struct device *dev)
{
- device_set_present(dev, (system_if_resolve(dev) > 0));
- return 0;
+ struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
+ struct nl_msg *msg;
+ struct ifinfomsg ifi = {
+ .ifi_family = AF_UNSPEC,
+ .ifi_index = 0,
+ };
+ struct if_check_data chk = {
+ .dev = dev,
+ .pending = 1,
+ };
+ int ret = 1;
+
+ msg = nlmsg_alloc_simple(RTM_GETLINK, 0);
+ if (!msg || nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
+ nla_put_string(msg, IFLA_IFNAME, dev->ifname))
+ goto out;
+
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_check_valid, &chk);
+ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_check_ack, &chk);
+ nl_cb_err(cb, NL_CB_CUSTOM, cb_if_check_error, &chk);
+
+ nl_send_auto_complete(sock_rtnl, msg);
+ while (chk.pending > 0)
+ nl_recvmsgs(sock_rtnl, cb);
+
+ nlmsg_free(msg);
+ ret = chk.pending;
+
+out:
+ nl_cb_put(cb);
+ return ret;
}
struct device *
}
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;
}
struct ifreq ifr;
char buf[64], *s;
void *c;
- int dir_fd, val = 0;
+ int dir_fd;
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);
};
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;
{
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;
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;
route->nexthop.in6.s6_addr32[2] ||
route->nexthop.in6.s6_addr32[3];
- 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_src_len = route->sourcemask,
+ .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
.rtm_protocol = (route->flags & DEVADDR_KERNEL) ? RTPROT_KERNEL : RTPROT_STATIC,
- .rtm_scope = scope,
+ .rtm_scope = RT_SCOPE_NOWHERE,
.rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
+ .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
};
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;
+ }
+ else
+ rtm.rtm_scope = (have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
+ }
+
+ if (route->flags & DEVROUTE_TYPE) {
+ rtm.rtm_type = route->type;
+ if (!(route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))) {
+ if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_BROADCAST ||
+ rtm.rtm_type == RTN_NAT || rtm.rtm_type == RTN_ANYCAST)
+ rtm.rtm_table = RT_TABLE_LOCAL;
+ }
+
+ if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT)
+ rtm.rtm_scope = RT_SCOPE_HOST;
+ else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
+ rtm.rtm_type == RTN_ANYCAST)
+ rtm.rtm_scope = RT_SCOPE_LINK;
+ }
+
msg = nlmsg_alloc_simple(cmd, flags);
if (!msg)
return -1;
if (route->mask)
nla_put(msg, RTA_DST, alen, &route->addr);
+ if (route->sourcemask)
+ nla_put(msg, RTA_SRC, alen, &route->source);
+
if (route->metric > 0)
nla_put_u32(msg, RTA_PRIORITY, route->metric);
if (have_gw)
nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
- 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);
+
+ if (route->flags & DEVROUTE_MTU) {
+ struct nlattr *metrics;
+
+ if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
+ goto nla_put_failure;
+
+ nla_put_u32(msg, RTAX_MTU, route->mtu);
+
+ nla_nest_end(msg, metrics);
+ }
return system_rtnl_call(msg);
+
+nla_put_failure:
+ nlmsg_free(msg);
+ return -ENOMEM;
}
int system_add_route(struct device *dev, struct device_route *route)
if (fd < 0)
continue;
- write(fd, "-1", 2);
+ if (write(fd, "-1", 2)) {}
close(fd);
}
return 0;
}
+bool system_resolve_rt_type(const char *type, unsigned int *id)
+{
+ return system_rtn_aton(type, id);
+}
+
+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;
+
+ *id = table;
+ return true;
+}
+
+bool system_is_default_rt_table(unsigned int id)
+{
+ return (id == RT_TABLE_MAIN);
+}
+
+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)
+{
+ return system_rtn_aton(action, id);
+}
+
time_t system_get_rtime(void)
{
struct timespec ts;
#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;
return ioctl(sock_ioctl, cmd, &ifr);
}
-int system_del_ip_tunnel(const char *name)
+#ifdef IFLA_IPTUN_MAX
+#define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
+static int system_add_gre_tunnel(const char *name, const char *kind,
+ const unsigned int link, struct blob_attr **tb, bool v6)
{
- struct ip_tunnel_parm p;
+ struct nl_msg *nlm;
+ struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
+ struct blob_attr *cur;
+ uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0;
+ uint16_t iflags = 0, oflags = 0;
+ uint8_t tos = 0;
+ int ret = 0, ttl = 64;
+
+ nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
+ if (!nlm)
+ return -1;
+
+ nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
+ nla_put_string(nlm, IFLA_IFNAME, name);
+
+ struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
+ if (!linkinfo) {
+ ret = -ENOMEM;
+ goto failure;
+ }
+
+ nla_put_string(nlm, IFLA_INFO_KIND, kind);
+ struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
+ if (!infodata) {
+ ret = -ENOMEM;
+ goto failure;
+ }
+
+ if (link)
+ nla_put_u32(nlm, IFLA_GRE_LINK, link);
+
+ if ((cur = tb[TUNNEL_ATTR_TTL]))
+ ttl = blobmsg_get_u32(cur);
+
+ nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
+
+ if ((cur = tb[TUNNEL_ATTR_TOS])) {
+ char *str = blobmsg_get_string(cur);
+ if (strcmp(str, "inherit")) {
+ unsigned uval;
+
+ if (!system_tos_aton(str, &uval)) {
+ ret = -EINVAL;
+ goto failure;
+ }
+
+ if (v6)
+ flowinfo |= htonl(uval << 20) & IP6_FLOWINFO_TCLASS;
+ else
+ tos = uval;
+ } else {
+ if (v6)
+ flags |= IP6_TNL_F_USE_ORIG_TCLASS;
+ else
+ tos = 1;
+ }
+ }
+
+ if ((cur = tb[TUNNEL_ATTR_INFO]) && (blobmsg_type(cur) == BLOBMSG_TYPE_STRING)) {
+ uint8_t icsum, ocsum, iseqno, oseqno;
+ if (sscanf(blobmsg_get_string(cur), "%u,%u,%hhu,%hhu,%hhu,%hhu",
+ &ikey, &okey, &icsum, &ocsum, &iseqno, &oseqno) < 6) {
+ ret = -EINVAL;
+ goto failure;
+ }
+
+ if (ikey)
+ iflags |= GRE_KEY;
+
+ if (okey)
+ oflags |= GRE_KEY;
+
+ if (icsum)
+ iflags |= GRE_CSUM;
- tunnel_parm_init(&p);
- return tunnel_ioctl(name, SIOCDELTUNNEL, &p);
+ if (ocsum)
+ oflags |= GRE_CSUM;
+
+ if (iseqno)
+ iflags |= GRE_SEQ;
+
+ if (oseqno)
+ oflags |= GRE_SEQ;
+ }
+
+ if (v6) {
+ struct in6_addr in6buf;
+ if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+ if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+ nla_put(nlm, IFLA_GRE_LOCAL, sizeof(in6buf), &in6buf);
+ }
+
+ if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+ if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+ nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf);
+ }
+ nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, 4);
+
+ if (flowinfo)
+ nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo);
+
+ if (flags)
+ nla_put_u32(nlm, IFLA_GRE_FLAGS, flags);
+ } else {
+ struct in_addr inbuf;
+ bool set_df = true;
+
+ if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+ if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+ nla_put(nlm, IFLA_GRE_LOCAL, sizeof(inbuf), &inbuf);
+ }
+
+ if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+ if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+ nla_put(nlm, IFLA_GRE_REMOTE, sizeof(inbuf), &inbuf);
+
+ if (IN_MULTICAST(ntohl(inbuf.s_addr))) {
+ if (!okey) {
+ okey = inbuf.s_addr;
+ oflags |= GRE_KEY;
+ }
+
+ if (!ikey) {
+ ikey = inbuf.s_addr;
+ iflags |= GRE_KEY;
+ }
+ }
+ }
+
+ if ((cur = tb[TUNNEL_ATTR_DF]))
+ set_df = blobmsg_get_bool(cur);
+
+ /* ttl !=0 and nopmtudisc are incompatible */
+ if (ttl && !set_df) {
+ ret = -EINVAL;
+ goto failure;
+ }
+
+ nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
+
+ nla_put_u8(nlm, IFLA_GRE_TOS, tos);
+ }
+
+ if (oflags)
+ nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
+
+ if (iflags)
+ nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
+
+ if (okey)
+ nla_put_u32(nlm, IFLA_GRE_OKEY, okey);
+
+ if (ikey)
+ nla_put_u32(nlm, IFLA_GRE_IKEY, ikey);
+
+ nla_nest_end(nlm, infodata);
+ nla_nest_end(nlm, linkinfo);
+
+ return system_rtnl_call(nlm);
+
+failure:
+ nlmsg_free(nlm);
+ return ret;
}
+#endif
-static int parse_ipaddr(struct blob_attr *attr, __be32 *addr)
+static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
{
- if (!attr)
- return 1;
+ struct blob_attr *cur;
+ bool set_df = true;
+ struct ip_tunnel_parm p = {
+ .link = link,
+ .iph = {
+ .version = 4,
+ .ihl = 5,
+ .protocol = proto,
+ }
+ };
- return inet_pton(AF_INET, blobmsg_data(attr), (void *) addr);
-}
+ 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;
-int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
+ if ((cur = tb[TUNNEL_ATTR_DF]))
+ set_df = blobmsg_get_bool(cur);
+
+ if ((cur = tb[TUNNEL_ATTR_TTL]))
+ p.iph.ttl = blobmsg_get_u32(cur);
+
+ if ((cur = tb[TUNNEL_ATTR_TOS])) {
+ char *str = blobmsg_get_string(cur);
+ if (strcmp(str, "inherit")) {
+ unsigned uval;
+
+ if (!system_tos_aton(str, &uval))
+ return -EINVAL;
+
+ p.iph.tos = uval;
+ } else
+ p.iph.tos = 1;
+ }
+
+ p.iph.frag_off = set_df ? htons(IP_DF) : 0;
+ /* ttl !=0 and nopmtudisc are incompatible */
+ if (p.iph.ttl && p.iph.frag_off == 0)
+ return -EINVAL;
+
+ strncpy(p.name, name, sizeof(p.name));
+
+ switch (p.iph.protocol) {
+ case IPPROTO_IPIP:
+ return tunnel_ioctl("tunl0", SIOCADDTUNNEL, &p);
+ case IPPROTO_IPV6:
+ return tunnel_ioctl("sit0", SIOCADDTUNNEL, &p);
+ default:
+ break;
+ }
+ return -1;
+}
+
+static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
{
- struct blob_attr *tb[__TUNNEL_ATTR_MAX];
struct blob_attr *cur;
- struct ip_tunnel_parm p;
- const char *base, *str;
- bool is_sit;
+ const char *str;
- system_del_ip_tunnel(name);
+ if (!(cur = tb[TUNNEL_ATTR_TYPE]))
+ return -EINVAL;
+ str = blobmsg_data(cur);
- tunnel_parm_init(&p);
+ if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
+ !strcmp(str, "greip6") || !strcmp(str, "gretapip6"))
+ return system_link_del(name);
+ else
+ return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
+}
+
+int system_del_ip_tunnel(const char *name, struct blob_attr *attr)
+{
+ struct blob_attr *tb[__TUNNEL_ATTR_MAX];
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");
+ return __system_del_ip_tunnel(name, tb);
+}
- if (is_sit) {
- p.iph.protocol = IPPROTO_IPV6;
- base = "sit0";
- } else
- return -EINVAL;
+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);
- if (!parse_ipaddr(tb[TUNNEL_ATTR_LOCAL], &p.iph.saddr))
- return -EINVAL;
+ 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;
- if (!parse_ipaddr(tb[TUNNEL_ATTR_REMOTE], &p.iph.daddr))
+ 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;
+
+ blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
+ blob_data(attr), blob_len(attr));
+
+ __system_del_ip_tunnel(name, tb);
+
+ if (!(cur = tb[TUNNEL_ATTR_TYPE]))
return -EINVAL;
+ str = blobmsg_data(cur);
+ unsigned int ttl = 0;
if ((cur = tb[TUNNEL_ATTR_TTL])) {
- unsigned int val = blobmsg_get_u32(cur);
+ ttl = blobmsg_get_u32(cur);
+ if (ttl > 255)
+ return -EINVAL;
+ }
- if (val > 255)
+ 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;
- p.iph.ttl = val;
+ if (iface->l3_dev.dev)
+ link = iface->l3_dev.dev->ifindex;
}
- strncpy(p.name, name, sizeof(p.name));
- if (tunnel_ioctl(base, SIOCADDTUNNEL, &p) < 0)
- return -1;
+ if (!strcmp(str, "sit")) {
+ if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
+ return -1;
#ifdef SIOCADD6RD
- cur = tb[TUNNEL_ATTR_6RD_PREFIX];
- if (cur && is_sit) {
- unsigned int mask;
- struct ip_tunnel_6rd p6;
+ 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;
+ memset(&p6, 0, sizeof(p6));
- if ((cur = tb[TUNNEL_ATTR_6RD_RELAY_PREFIX])) {
- if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
- &p6.relay_prefix, &mask) || mask > 32)
+ if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
+ &p6.prefix, &mask) || mask > 128)
return -EINVAL;
- p6.relay_prefixlen = mask;
+ 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, tb);
+ return -1;
+ }
}
-
- if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
- system_del_ip_tunnel(name);
+#endif
+#ifdef IFLA_IPTUN_MAX
+ } else if (!strcmp(str, "ipip6")) {
+ struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
+ NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
+ struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
+ int ret = 0;
+
+ if (!nlm)
return -1;
+
+ nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
+ nla_put_string(nlm, IFLA_IFNAME, name);
+
+ if (link)
+ nla_put_u32(nlm, IFLA_LINK, link);
+
+ struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
+ if (!linkinfo) {
+ ret = -ENOMEM;
+ goto failure;
+ }
+ nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
+ struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
+ if (!infodata) {
+ ret = -ENOMEM;
+ goto failure;
+ }
+
+ if (link)
+ nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
+
+ nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
+ nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
+ nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
+
+ struct in6_addr in6buf;
+ if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+ if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+ nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
+ }
+
+ if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+ if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+ nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
+ }
+
+#ifdef IFLA_IPTUN_FMR_MAX
+ if ((cur = tb[TUNNEL_ATTR_FMRS])) {
+ struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
+
+ struct blob_attr *fmr;
+ unsigned rem, fmrcnt = 0;
+ blobmsg_for_each_attr(fmr, cur, rem) {
+ if (blobmsg_type(fmr) != BLOBMSG_TYPE_STRING)
+ continue;
+
+ unsigned ip4len, ip6len, ealen, offset = 6;
+ char ip6buf[48];
+ char ip4buf[16];
+
+ if (sscanf(blobmsg_get_string(fmr), "%47[^/]/%u,%15[^/]/%u,%u,%u",
+ ip6buf, &ip6len, ip4buf, &ip4len, &ealen, &offset) < 5) {
+ ret = -EINVAL;
+ goto failure;
+ }
+
+ struct in6_addr ip6prefix;
+ struct in_addr ip4prefix;
+ if (inet_pton(AF_INET6, ip6buf, &ip6prefix) != 1 ||
+ inet_pton(AF_INET, ip4buf, &ip4prefix) != 1) {
+ ret = -EINVAL;
+ goto failure;
+ }
+
+ struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
+
+ nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
+ nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
+ nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
+ nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
+ nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
+ nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
+
+ nla_nest_end(nlm, rule);
+ }
+
+ nla_nest_end(nlm, fmrs);
}
- }
#endif
+ nla_nest_end(nlm, infodata);
+ nla_nest_end(nlm, linkinfo);
+
+ return system_rtnl_call(nlm);
+failure:
+ nlmsg_free(nlm);
+ return ret;
+ } else if (!strcmp(str, "greip")) {
+ return system_add_gre_tunnel(name, "gre", link, tb, false);
+ } else if (!strcmp(str, "gretapip")) {
+ return system_add_gre_tunnel(name, "gretap", link, tb, false);
+ } else if (!strcmp(str, "greip6")) {
+ return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
+ } else if (!strcmp(str, "gretapip6")) {
+ return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
+#endif
+ } else if (!strcmp(str, "ipip")) {
+ return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);
+ }
+ else
+ return -EINVAL;
+
return 0;
}
projects / project / netifd.git / blobdiff