* 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
#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 <unistd.h>
+#ifndef RTN_FAILED_POLICY
+#define RTN_FAILED_POLICY 12
+#endif
+
#include <string.h>
#include <fcntl.h>
#include <glob.h>
struct event_socket {
struct uloop_fd uloop;
struct nl_sock *sock;
- struct nl_cb *cb;
};
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);
+ nl_recvmsgs_default(ev->sock);
}
static struct nl_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))
+ 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))
return false;
- nl_cb_set(ev->cb, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
+ // 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);
- return create_raw_event_socket(ev, protocol, 0, handler_nl_event);
+ // Increase rx buffer size to 65K on event sockets
+ if (nl_socket_set_buffer_size(ev->sock, 65535, 0))
+ return false;
+
+ 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);
system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev->ifname, val);
}
+#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;
if (dev->external)
return;
- dev->ifindex = system_if_resolve(dev);
+ device_set_ifindex(dev, system_if_resolve(dev));
if (!dev->ifindex)
return;
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 = {
{
system_if_get_settings(dev, &dev->orig_settings);
system_if_apply_settings(dev, &dev->settings);
- dev->ifindex = system_if_resolve(dev);
+ device_set_ifindex(dev, system_if_resolve(dev));
return system_if_flags(dev->ifname, IFF_UP, 0);
}
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 *
char buf[64], *s;
void *c;
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_uint64_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);
struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
if (addr->preferred_until) {
- int preferred = addr->preferred_until - now;
+ 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) {
- int valid = addr->valid_until - now;
+ int64_t valid = addr->valid_until - now;
if (valid <= 0)
return -1;
+ else if (valid > UINT32_MAX)
+ valid = UINT32_MAX;
cinfo.ifa_valid = valid;
}
unsigned char scope = (cmd == RTM_DELROUTE) ? RT_SCOPE_NOWHERE :
(have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
- unsigned int table = (route->flags & DEVROUTE_TABLE) ? route->table : RT_TABLE_MAIN;
+ 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_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,
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 (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);
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)
#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;
int system_del_ip_tunnel(const char *name)
{
- struct ip_tunnel_parm p;
-
- tunnel_parm_init(&p);
- return tunnel_ioctl(name, SIOCDELTUNNEL, &p);
+ return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
}
int system_update_ipv6_mtu(struct device *dev, int mtu)
return ret;
}
-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;
+ bool set_df = true;
+ const char *str;
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_DF]))
+ set_df = blobmsg_get_bool(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 || (!set_df && ttl))
+ 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;
-
-#ifdef SIOCADD6RD
- cur = tb[TUNNEL_ATTR_6RD_PREFIX];
- if (cur && is_sit) {
- unsigned int mask;
- struct ip_tunnel_6rd p6;
+ if (!strcmp(str, "sit")) {
+ struct ip_tunnel_parm p = {
+ .link = link,
+ .iph = {
+ .version = 4,
+ .ihl = 5,
+ .frag_off = set_df ? htons(IP_DF) : 0,
+ .protocol = IPPROTO_IPV6,
+ .ttl = ttl
+ }
+ };
- memset(&p6, 0, sizeof(p6));
+ if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
+ inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
+ return -EINVAL;
- if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
- &p6.prefix, &mask) || mask > 128)
+ if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
+ inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
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)
+ 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.relay_prefixlen = mask;
- }
+ p6.prefixlen = mask;
- if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
- system_del_ip_tunnel(name);
- return -1;
+ 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