X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-netdev.c;h=13338aec512fcd173acfd913cde7c388e4d2f7f1;hp=8deef0d50f9bede89ee74c1a86e5308715ba431a;hb=8469c1d329f983992805b6e6b44ff40e34adfc45;hpb=5261692fe5a4ac82f9783d57a07b0a4786dc01ab
diff --git a/src/network/networkd-netdev.c b/src/network/networkd-netdev.c
index 8deef0d50..13338aec5 100644
--- a/src/network/networkd-netdev.c
+++ b/src/network/networkd-netdev.c
@@ -19,12 +19,15 @@
along with systemd; If not, see .
***/
+#include
+
#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
@@ -33,9 +36,12 @@ static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
[NETDEV_KIND_BOND] = "bond",
[NETDEV_KIND_VLAN] = "vlan",
[NETDEV_KIND_MACVLAN] = "macvlan",
+ [NETDEV_KIND_VXLAN] = "vxlan",
[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);
@@ -88,6 +94,9 @@ static void netdev_free(NetDev *netdev) {
free(netdev->description);
free(netdev->ifname);
+ free(netdev->ifname_peer);
+ free(netdev->mac);
+ free(netdev->mac_peer);
condition_free_list(netdev->match_host);
condition_free_list(netdev->match_virt);
@@ -212,6 +221,7 @@ static int netdev_enter_ready(NetDev *netdev) {
return 0;
}
+
static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
NetDev *netdev = userdata;
int r;
@@ -222,7 +232,7 @@ static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userda
if (r == -EEXIST)
log_debug_netdev(netdev, "netdev exists, using existing");
else if (r < 0) {
- log_warning_netdev(netdev, "netdev could not be greated: %s", strerror(-r));
+ log_warning_netdev(netdev, "netdev could not be created: %s", strerror(-r));
netdev_drop(netdev);
return 1;
@@ -297,7 +307,7 @@ static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t c
return r;
}
- if(netdev->mtu) {
+ if (netdev->mtu) {
r = sd_rtnl_message_append_u32(req, IFLA_MTU, netdev->mtu);
if (r < 0) {
log_error_netdev(netdev,
@@ -307,6 +317,16 @@ static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t c
}
}
+ 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,
@@ -385,13 +405,20 @@ static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t c
int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
int r;
- if (netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN)
+ switch(netdev->kind) {
+ case NETDEV_KIND_VLAN:
+ case 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)
+ case NETDEV_KIND_VXLAN:
+ return netdev_create_vxlan(netdev, link, callback);
+ case NETDEV_KIND_IPIP:
+ case NETDEV_KIND_GRE:
+ case NETDEV_KIND_SIT:
+ case NETDEV_KIND_VTI:
return netdev_create_tunnel(link, netdev_create_handler);
+ default:
+ break;
+ }
if (netdev->state == NETDEV_STATE_READY) {
r = netdev_enslave_ready(netdev, link, callback);
@@ -446,7 +473,6 @@ int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *message) {
return r;
}
-
if (netdev->ifindex > 0) {
if (netdev->ifindex != ifindex) {
log_error_netdev(netdev, "Could not set ifindex to %d, already set to %d",
@@ -512,6 +538,52 @@ int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *message) {
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;
@@ -543,8 +615,12 @@ static int netdev_load_one(Manager *manager, const char *filename) {
netdev->kind = _NETDEV_KIND_INVALID;
netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID;
netdev->vlanid = VLANID_MAX + 1;
+ netdev->vxlanid = VXLAN_VID_MAX + 1;
+ netdev->tunnel_pmtudisc = true;
+ netdev->learning = true;
- r = config_parse(NULL, filename, file, "Match\0NetDev\0VLAN\0MACVLAN\0Tunnel\0",
+ r = config_parse(NULL, filename, file,
+ "Match\0NetDev\0VLAN\0MACVLAN\0VXLAN\0Tunnel\0Peer\0",
config_item_perf_lookup, (void*) network_netdev_gperf_lookup,
false, false, netdev);
if (r < 0) {
@@ -567,12 +643,23 @@ static int netdev_load_one(Manager *manager, const char *filename) {
return 0;
}
+ if (netdev->kind == NETDEV_KIND_VXLAN && netdev->vxlanid > VXLAN_VID_MAX) {
+ log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
+ return 0;
+ }
+
if (netdev->kind != NETDEV_KIND_VLAN && netdev->vlanid <= VLANID_MAX) {
log_warning("VLAN Id configured for a %s in %s. Ignoring",
netdev_kind_to_string(netdev->kind), filename);
return 0;
}
+ if (netdev->kind != NETDEV_KIND_VXLAN && netdev->vxlanid <= VXLAN_VID_MAX) {
+ log_warning("VXLAN Id configured for a %s in %s. Ignoring",
+ netdev_kind_to_string(netdev->kind), filename);
+ return 0;
+ }
+
if (netdev->kind != NETDEV_KIND_MACVLAN &&
netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) {
log_warning("MACVLAN Mode configured for a %s in %s. Ignoring",
@@ -590,20 +677,51 @@ static int netdev_load_one(Manager *manager, const char *filename) {
NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
return 0;
+ 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_VLAN &&
- netdev->kind != NETDEV_KIND_MACVLAN &&
- netdev->kind != NETDEV_KIND_IPIP &&
- netdev->kind != NETDEV_KIND_GRE &&
- netdev->kind != NETDEV_KIND_SIT) {
+ switch (netdev->kind) {
+ case 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;
+ }
+ }
+
+ r = netdev_create_veth(netdev, netdev_create_handler);
+ if (r < 0)
+ return r;
+
+ break;
+ case NETDEV_KIND_BRIDGE:
+ case NETDEV_KIND_BOND:
r = netdev_create(netdev, NULL, NULL);
if (r < 0)
return r;
+ break;
+ default:
+ break;
}
log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));