system-linux: allow "throw" route type
[project/netifd.git] / system-linux.c
index e0cb5bc..3e11bdf 100644 (file)
@@ -4,6 +4,7 @@
  * 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>
+ * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2
@@ -25,6 +26,7 @@
 #include <net/if_arp.h>
 
 #include <arpa/inet.h>
+#include <netinet/ether.h>
 #include <netinet/in.h>
 
 #include <linux/rtnetlink.h>
@@ -316,6 +318,11 @@ static void system_set_neigh6gcstaletime(struct device *dev, const char *val)
        system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev->ifname, val);
 }
 
+static void system_set_neigh4locktime(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev->ifname, val);
+}
+
 static void system_set_dadtransmits(struct device *dev, const char *val)
 {
        system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev->ifname, val);
@@ -484,6 +491,12 @@ static int system_get_neigh6gcstaletime(struct device *dev, char *buf, const siz
                        dev->ifname, buf, buf_sz);
 }
 
+static int system_get_neigh4locktime(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
+                       dev->ifname, buf, buf_sz);
+}
+
 static int system_get_dadtransmits(struct device *dev, char *buf, const size_t buf_sz)
 {
        return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
@@ -1345,6 +1358,11 @@ system_if_get_settings(struct device *dev, struct device_settings *s)
                s->flags |= DEV_OPT_NEIGHREACHABLETIME;
        }
 
+       if (!system_get_neigh4locktime(dev, buf, sizeof(buf))) {
+               s->neigh4locktime = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_NEIGHLOCKTIME;
+       }
+
        if (!system_get_neigh4gcstaletime(dev, buf, sizeof(buf))) {
                s->neigh4gcstaletime = strtoul(buf, NULL, 0);
                s->flags |= DEV_OPT_NEIGHGCSTALETIME;
@@ -1454,6 +1472,10 @@ system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned
                snprintf(buf, sizeof(buf), "%d", s->neigh6reachabletime);
                system_set_neigh6reachabletime(dev, buf);
        }
+       if (s->flags & DEV_OPT_NEIGHLOCKTIME & apply_mask) {
+               snprintf(buf, sizeof(buf), "%d", s->neigh4locktime);
+               system_set_neigh4locktime(dev, buf);
+       }
        if (s->flags & DEV_OPT_NEIGHGCSTALETIME & apply_mask) {
                snprintf(buf, sizeof(buf), "%d", s->neigh4gcstaletime);
                system_set_neigh4gcstaletime(dev, buf);
@@ -1874,7 +1896,8 @@ static int system_rt(struct device *dev, struct device_route *route, int cmd)
                                rtm.rtm_type == RTN_ANYCAST) {
                        rtm.rtm_scope = RT_SCOPE_LINK;
                } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
-                               rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY) {
+                               rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY ||
+                               rtm.rtm_type == RTN_THROW) {
                        rtm.rtm_scope = RT_SCOPE_UNIVERSE;
                        dev = NULL;
                }
@@ -2294,31 +2317,41 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
                }
        }
 
-       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 ((cur = tb[TUNNEL_ATTR_DATA])) {
+               struct blob_attr *tb_data[__GRE_DATA_ATTR_MAX];
 
-               if (ikey)
-                       iflags |= GRE_KEY;
+               blobmsg_parse(gre_data_attr_list.params, __GRE_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
 
-               if (okey)
-                       oflags |= GRE_KEY;
+               if ((cur = tb_data[GRE_DATA_IKEY])) {
+                       if ((ikey = blobmsg_get_u32(cur)))
+                               iflags |= GRE_KEY;
+               }
 
-               if (icsum)
-                       iflags |= GRE_CSUM;
+               if ((cur = tb_data[GRE_DATA_OKEY])) {
+                       if ((okey = blobmsg_get_u32(cur)))
+                               oflags |= GRE_KEY;
+               }
+
+               if ((cur = tb_data[GRE_DATA_ICSUM])) {
+                       if (blobmsg_get_bool(cur))
+                               iflags |= GRE_CSUM;
+               }
 
-               if (ocsum)
-                       oflags |= GRE_CSUM;
+               if ((cur = tb_data[GRE_DATA_OCSUM])) {
+                       if (blobmsg_get_bool(cur))
+                               oflags |= GRE_CSUM;
+               }
 
-               if (iseqno)
-                       iflags |= GRE_SEQ;
+               if ((cur = tb_data[GRE_DATA_ISEQNO])) {
+                       if (blobmsg_get_bool(cur))
+                               iflags |= GRE_SEQ;
+               }
 
-               if (oseqno)
-                       oflags |= GRE_SEQ;
+               if ((cur = tb[GRE_DATA_OSEQNO])) {
+                       if (blobmsg_get_bool(cur))
+                               oflags |= GRE_SEQ;
+               }
        }
 
        if (v6) {
@@ -2430,7 +2463,6 @@ static int system_add_vti_tunnel(const char *name, const char *kind,
        struct nl_msg *nlm;
        struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
        struct blob_attr *cur;
-       uint32_t ikey = 0, okey = 0;
        int ret = 0;
 
        nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
@@ -2456,14 +2488,6 @@ static int system_add_vti_tunnel(const char *name, const char *kind,
        if (link)
                nla_put_u32(nlm, IFLA_VTI_LINK, link);
 
-       if ((cur = tb[TUNNEL_ATTR_INFO]) && (blobmsg_type(cur) == BLOBMSG_TYPE_STRING)) {
-               if (sscanf(blobmsg_get_string(cur), "%u,%u",
-                       &ikey, &okey) < 2) {
-                       ret = -EINVAL;
-                       goto failure;
-               }
-       }
-
        if (v6) {
                struct in6_addr in6buf;
                if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
@@ -2503,11 +2527,23 @@ static int system_add_vti_tunnel(const char *name, const char *kind,
 
        }
 
-       if (okey)
-               nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
+       if ((cur = tb[TUNNEL_ATTR_DATA])) {
+               struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
+               uint32_t ikey = 0, okey = 0;
 
-       if (ikey)
-               nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
+               blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
+
+               if ((cur = tb_data[VTI_DATA_IKEY])) {
+                       if ((ikey = blobmsg_get_u32(cur)))
+                               nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
+               }
+
+               if ((cur = tb_data[VTI_DATA_OKEY])) {
+                       if ((okey = blobmsg_get_u32(cur)))
+                               nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
+               }
+       }
 
        nla_nest_end(nlm, infodata);
        nla_nest_end(nlm, linkinfo);
@@ -2520,6 +2556,155 @@ failure:
 }
 #endif
 
+#ifdef IFLA_VXLAN_MAX
+static int system_add_vxlan(const char *name, const unsigned int link, struct blob_attr **tb, bool v6)
+{
+       struct blob_attr *tb_data[__VXLAN_DATA_ATTR_MAX];
+       struct nl_msg *msg;
+       struct nlattr *linkinfo, *data;
+       struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
+       struct blob_attr *cur;
+       int ret = 0;
+
+       if ((cur = tb[TUNNEL_ATTR_DATA]))
+               blobmsg_parse(vxlan_data_attr_list.params, __VXLAN_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
+       else
+               return -EINVAL;
+
+       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, name);
+
+       if ((cur = tb_data[VXLAN_DATA_ATTR_MACADDR])) {
+               struct ether_addr *ea = ether_aton(blobmsg_get_string(cur));
+               if (!ea) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+
+               nla_put(msg, IFLA_ADDRESS, ETH_ALEN, ea);
+       }
+
+       if ((cur = tb[TUNNEL_ATTR_MTU])) {
+               uint32_t mtu = blobmsg_get_u32(cur);
+               nla_put_u32(msg, IFLA_MTU, mtu);
+       }
+
+       if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO))) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       nla_put_string(msg, IFLA_INFO_KIND, "vxlan");
+
+       if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       if (link)
+               nla_put_u32(msg, IFLA_VXLAN_LINK, link);
+
+       if ((cur = tb_data[VXLAN_DATA_ATTR_ID])) {
+               uint32_t id = blobmsg_get_u32(cur);
+               if (id >= (1u << 24) - 1) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+
+               nla_put_u32(msg, IFLA_VXLAN_ID, id);
+       }
+
+       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(msg, IFLA_VXLAN_LOCAL6, 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(msg, IFLA_VXLAN_GROUP6, sizeof(in6buf), &in6buf);
+               }
+       } else {
+               struct in_addr inbuf;
+
+               if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+                       if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(msg, IFLA_VXLAN_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(msg, IFLA_VXLAN_GROUP, sizeof(inbuf), &inbuf);
+               }
+       }
+
+       uint32_t port = 4789;
+       if ((cur = tb_data[VXLAN_DATA_ATTR_PORT])) {
+               port = blobmsg_get_u32(cur);
+               if (port < 1 || port > 65535) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+       }
+       nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
+
+       if ((cur = tb[TUNNEL_ATTR_TOS])) {
+               char *str = blobmsg_get_string(cur);
+               unsigned tos = 1;
+
+               if (strcmp(str, "inherit")) {
+                       if (!system_tos_aton(str, &tos))
+                               return -EINVAL;
+               }
+
+               nla_put_u8(msg, IFLA_VXLAN_TOS, tos);
+       }
+
+       if ((cur = tb[TUNNEL_ATTR_TTL])) {
+               uint32_t ttl = blobmsg_get_u32(cur);
+               if (ttl < 1 || ttl > 255) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+
+               nla_put_u8(msg, IFLA_VXLAN_TTL, ttl);
+       }
+
+       nla_nest_end(msg, data);
+       nla_nest_end(msg, linkinfo);
+
+       ret = system_rtnl_call(msg);
+       if (ret)
+               D(SYSTEM, "Error adding vxlan '%s': %d\n", name, ret);
+
+       return ret;
+
+failure:
+       nlmsg_free(msg);
+       return ret;
+}
+#endif
+
 static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
 {
        struct blob_attr *cur;
@@ -2589,7 +2774,8 @@ static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
 
        if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
            !strcmp(str, "greip6") || !strcmp(str, "gretapip6") ||
-           !strcmp(str, "vtiip") || !strcmp(str, "vtiip6"))
+           !strcmp(str, "vtiip") || !strcmp(str, "vtiip6") ||
+           !strcmp(str, "vxlan") || !strcmp(str, "vxlan6"))
                return system_link_del(name);
        else
                return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
@@ -2813,6 +2999,12 @@ failure:
        } else if (!strcmp(str, "vtiip6")) {
                return system_add_vti_tunnel(name, "vti6", link, tb, true);
 #endif
+#ifdef IFLA_VXLAN_MAX
+       } else if(!strcmp(str, "vxlan")) {
+               return system_add_vxlan(name, link, tb, false);
+       } else if(!strcmp(str, "vxlan6")) {
+               return system_add_vxlan(name, link, tb, true);
+#endif
 #endif
        } else if (!strcmp(str, "ipip")) {
                return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);