along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include <net/if.h>
+
#include "networkd.h"
#include "network-internal.h"
#include "path-util.h"
#include "conf-files.h"
#include "conf-parser.h"
#include "list.h"
+#include "siphash24.h"
#define VLANID_MAX 4094
[NETDEV_KIND_BOND] = "bond",
[NETDEV_KIND_VLAN] = "vlan",
[NETDEV_KIND_MACVLAN] = "macvlan",
+ [NETDEV_KIND_IPIP] = "ipip",
+ [NETDEV_KIND_GRE] = "gre",
+ [NETDEV_KIND_SIT] = "sit",
+ [NETDEV_KIND_VETH] = "veth",
+ [NETDEV_KIND_VTI] = "vti"
};
DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);
DEFINE_STRING_TABLE_LOOKUP(macvlan_mode, MacVlanMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode, "Failed to parse macvlan mode");
-static void netdev_free(NetDev *netdev) {
+static void netdev_cancel_callbacks(NetDev *netdev) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
netdev_enslave_callback *callback;
if (!netdev)
return;
+ rtnl_message_new_synthetic_error(-ENODEV, 0, &m);
+
while ((callback = netdev->callbacks)) {
+ if (m) {
+ assert(callback->link);
+ assert(callback->callback);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+
+ callback->callback(netdev->manager->rtnl, m, link);
+ }
+
LIST_REMOVE(callbacks, netdev->callbacks, callback);
free(callback);
}
+}
- if (netdev->name)
- hashmap_remove(netdev->manager->netdevs, netdev->name);
+static void netdev_free(NetDev *netdev) {
+ if (!netdev)
+ return;
+
+ netdev_cancel_callbacks(netdev);
+
+ if (netdev->ifname)
+ hashmap_remove(netdev->manager->netdevs, netdev->ifname);
free(netdev->filename);
free(netdev->description);
- free(netdev->name);
+ free(netdev->ifname);
+ free(netdev->mac);
+ free(netdev->mac_peer);
condition_free_list(netdev->match_host);
condition_free_list(netdev->match_virt);
return netdev;
}
+void netdev_drop(NetDev *netdev) {
+ if (!netdev || netdev->state == NETDEV_STATE_LINGER)
+ return;
+
+ netdev->state = NETDEV_STATE_LINGER;
+
+ log_debug_netdev(netdev, "netdev removed");
+
+ netdev_cancel_callbacks(netdev);
+
+ netdev_unref(netdev);
+
+ return;
+}
+
int netdev_get(Manager *manager, const char *name, NetDev **ret) {
NetDev *netdev;
netdev_enslave_callback *callback;
assert(netdev);
- assert(netdev->name);
+ assert(netdev->ifname);
if (netdev->state != NETDEV_STATE_CREATING)
return 0;
if (r == -EEXIST)
log_debug_netdev(netdev, "netdev exists, using existing");
else if (r < 0) {
- log_warning_netdev(netdev, "netdev failed: %s", strerror(-r));
- netdev_enter_failed(netdev);
+ log_warning_netdev(netdev, "netdev could not be created: %s", strerror(-r));
+ netdev_drop(netdev);
return 1;
}
return 1;
}
+int config_parse_tunnel_address(const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+ NetDev *n = data;
+ unsigned char family = AF_INET;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = net_parse_inaddr(rvalue, &family, n);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Tunnel address is invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+ return 0;
+}
+
static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
const char *kind;
assert(netdev);
assert(!(netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN) ||
(link && callback));
- assert(netdev->name);
+ assert(netdev->ifname);
assert(netdev->manager);
assert(netdev->manager->rtnl);
}
}
- r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->name);
+ r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->ifname);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IFNAME attribute: %s",
return r;
}
+ if (netdev->mtu) {
+ r = sd_rtnl_message_append_u32(req, IFLA_MTU, netdev->mtu);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_MTU attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (netdev->mac) {
+ r = sd_rtnl_message_append_ether_addr(req, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
if (r < 0) {
log_error_netdev(netdev,
if (netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN)
return netdev_create(netdev, link, callback);
+ if(netdev->kind == NETDEV_KIND_IPIP ||
+ netdev->kind == NETDEV_KIND_GRE ||
+ netdev->kind == NETDEV_KIND_SIT ||
+ netdev->kind == NETDEV_KIND_VTI)
+ return netdev_create_tunnel(link, netdev_create_handler);
+
if (netdev->state == NETDEV_STATE_READY) {
r = netdev_enslave_ready(netdev, link, callback);
if (r < 0)
return r;
}
-
if (netdev->ifindex > 0) {
if (netdev->ifindex != ifindex) {
log_error_netdev(netdev, "Could not set ifindex to %d, already set to %d",
return r;
}
- if (!streq(netdev->name, received_name)) {
+ if (!streq(netdev->ifname, received_name)) {
log_error_netdev(netdev, "Received newlink with wrong IFNAME %s",
received_name);
netdev_enter_failed(netdev);
netdev->ifindex = ifindex;
+ log_debug_netdev(netdev, "netdev has index %d", netdev->ifindex);
+
netdev_enter_ready(netdev);
return 0;
}
+#define HASH_KEY SD_ID128_MAKE(52,e1,45,bd,00,6f,29,96,21,c6,30,6d,83,71,04,48)
+
+static int netdev_get_mac(const char *ifname, struct ether_addr **ret) {
+ _cleanup_free_ struct ether_addr *mac = NULL;
+ uint8_t result[8];
+ size_t l, sz;
+ uint8_t *v;
+ int r;
+
+ assert(ifname);
+ assert(ret);
+
+ mac = new0(struct ether_addr, 1);
+ if (!mac)
+ return -ENOMEM;
+
+ l = strlen(ifname);
+ sz = sizeof(sd_id128_t) + l;
+ v = alloca(sz);
+
+ /* fetch some persistent data unique to the machine */
+ r = sd_id128_get_machine((sd_id128_t*) v);
+ if (r < 0)
+ return r;
+
+ /* combine with some data unique (on this machine) to this
+ * netdev */
+ memcpy(v + sizeof(sd_id128_t), ifname, l);
+
+ /* Let's hash the host machine ID plus the container name. We
+ * use a fixed, but originally randomly created hash key here. */
+ siphash24(result, v, sz, HASH_KEY.bytes);
+
+ assert_cc(ETH_ALEN <= sizeof(result));
+ memcpy(mac->ether_addr_octet, result, ETH_ALEN);
+
+ /* see eth_random_addr in the kernel */
+ mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */
+ mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */
+
+ *ret = mac;
+ mac = NULL;
+
+ return 0;
+}
+
static int netdev_load_one(Manager *manager, const char *filename) {
_cleanup_netdev_unref_ NetDev *netdev = NULL;
_cleanup_fclose_ FILE *file = NULL;
netdev->kind = _NETDEV_KIND_INVALID;
netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID;
netdev->vlanid = VLANID_MAX + 1;
+ netdev->tunnel_pmtudisc = true;
- r = config_parse(NULL, filename, file, "Match\0NetDev\0VLAN\0MACVLAN\0",
+ r = config_parse(NULL, filename, file, "Match\0NetDev\0VLAN\0MACVLAN\0Tunnel\0Peer\0",
config_item_perf_lookup, (void*) network_netdev_gperf_lookup,
false, false, netdev);
if (r < 0) {
return 0;
}
- if (!netdev->name) {
+ if (!netdev->ifname) {
log_warning("NetDev without Name configured in %s. Ignoring", filename);
return 0;
}
NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
return 0;
- r = hashmap_put(netdev->manager->netdevs, netdev->name, netdev);
+ if (!netdev->mac) {
+ r = netdev_get_mac(netdev->ifname, &netdev->mac);
+ if (r < 0) {
+ log_error("Failed to generate predictable MAC address for %s",
+ netdev->ifname);
+ return r;
+ }
+ }
+
+ r = hashmap_put(netdev->manager->netdevs, netdev->ifname, netdev);
if (r < 0)
return r;
LIST_HEAD_INIT(netdev->callbacks);
+ if(netdev->kind == NETDEV_KIND_VETH) {
+ if (netdev->ifname_peer) {
+ log_warning("Veth NetDev without Peer Name configured "
+ "in %s. Ignoring", filename);
+ return 0;
+ }
+
+ if (!netdev->mac) {
+ r = netdev_get_mac(netdev->ifname_peer, &netdev->mac_peer);
+ if (r < 0) {
+ log_error("Failed to generate predictable MAC address for %s",
+ netdev->ifname_peer);
+ return r;
+ }
+ }
+
+ return netdev_create_veth(netdev, netdev_create_handler);
+ }
+
if (netdev->kind != NETDEV_KIND_VLAN &&
- netdev->kind != NETDEV_KIND_MACVLAN) {
+ netdev->kind != NETDEV_KIND_MACVLAN &&
+ netdev->kind != NETDEV_KIND_IPIP &&
+ netdev->kind != NETDEV_KIND_GRE &&
+ netdev->kind != NETDEV_KIND_SIT &&
+ netdev->kind != NETDEV_KIND_VTI) {
r = netdev_create(netdev, NULL, NULL);
if (r < 0)
return r;