#include <netinet/in.h>
#include <linux/if.h>
+#include <linux/if_arp.h>
#include <unistd.h>
#include "alloc-util.h"
return &link->manager->duid;
}
-int link_sysctl_ipv6_enabled(Link *link) {
- _cleanup_free_ char *value = NULL;
- int r;
-
- assert(link);
- assert(link->ifname);
-
- if (link->sysctl_ipv6_enabled >= 0)
- return link->sysctl_ipv6_enabled;
-
- const char *ifname = link->ifname; /* work around bogus gcc warning */
- r = sysctl_read_ip_property(AF_INET6, ifname, "disable_ipv6", &value);
- if (r < 0)
- return log_link_warning_errno(link, r,
- "Failed to read net.ipv6.conf.%s.disable_ipv6 sysctl property: %m",
- ifname);
-
- link->sysctl_ipv6_enabled = value[0] == '0';
- return link->sysctl_ipv6_enabled;
-}
-
static bool link_dhcp6_enabled(Link *link) {
assert(link);
if (link->network->bond)
return false;
- if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
- return false;
-
- if (link_sysctl_ipv6_enabled(link) == 0)
+ if (link->iftype == ARPHRD_CAN)
return false;
return link->network->dhcp & ADDRESS_FAMILY_IPV6;
if (link->network->bond)
return false;
- if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+ if (link->iftype == ARPHRD_CAN)
return false;
return link->network->dhcp & ADDRESS_FAMILY_IPV4;
if (link->network->bond)
return false;
- if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+ if (link->iftype == ARPHRD_CAN)
return false;
return link->network->dhcp_server;
}
-bool link_ipv4ll_enabled(Link *link, AddressFamilyBoolean mask) {
+bool link_ipv4ll_enabled(Link *link, AddressFamily mask) {
assert(link);
assert((mask & ~(ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) == 0);
if (!link->network)
return false;
+ if (link->iftype == ARPHRD_CAN)
+ return false;
+
if (STRPTR_IN_SET(link->kind,
"vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti",
- "vti6", "can", "vcan", "vxcan", "nlmon", "xfrm"))
+ "vti6", "nlmon", "xfrm"))
return false;
/* L3 or L3S mode do not support ARP. */
if (!link->network)
return false;
- if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "can", "vcan", "vxcan", "nlmon"))
+ if (link->iftype == ARPHRD_CAN)
return false;
- if (link->network->bond)
+ if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon"))
return false;
- if (link_sysctl_ipv6_enabled(link) == 0)
+ if (link->network->bond)
return false;
return link->network->link_local & ADDRESS_FAMILY_IPV6;
if (link->network->bond)
return false;
- if (link_sysctl_ipv6_enabled(link) == 0)
- return false;
-
- if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+ if (link->iftype == ARPHRD_CAN)
return false;
/* DHCPv6 client will not be started if no IPv6 link-local address is configured. */
- return link_ipv6ll_enabled(link) || network_has_static_ipv6_addresses(link->network);
+ if (link_ipv6ll_enabled(link))
+ return true;
+
+ if (network_has_static_ipv6_configurations(link->network))
+ return true;
+
+ return false;
}
static bool link_radv_enabled(Link *link) {
if (!link->network)
return false;
- if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID)
+ if (link->network->ip_forward == _ADDRESS_FAMILY_INVALID)
return false;
return link->network->ip_forward & ADDRESS_FAMILY_IPV4;
if (!link->network)
return false;
- if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID)
- return false;
-
- if (link_sysctl_ipv6_enabled(link) == 0)
+ if (link->network->ip_forward == _ADDRESS_FAMILY_INVALID)
return false;
return link->network->ip_forward & ADDRESS_FAMILY_IPV6;
return link->network->ipv6_privacy_extensions;
}
-static int link_enable_ipv6(Link *link) {
- bool disabled;
+static int link_update_ipv6_sysctl(Link *link) {
+ bool enabled;
int r;
if (link->flags & IFF_LOOPBACK)
return 0;
- disabled = !link_ipv6_enabled(link);
+ enabled = link_ipv6_enabled(link);
+ if (enabled) {
+ r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", false);
+ if (r < 0)
+ return log_link_warning_errno(link, r, "Cannot enable IPv6: %m");
- r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", disabled);
- if (r < 0)
- log_link_warning_errno(link, r, "Cannot %s IPv6: %m", enable_disable(!disabled));
- else
- log_link_info(link, "IPv6 successfully %sd", enable_disable(!disabled));
+ log_link_info(link, "IPv6 successfully enabled");
+ }
return 0;
}
.state = LINK_STATE_PENDING,
.ifindex = ifindex,
.iftype = iftype,
- .sysctl_ipv6_enabled = -1,
.n_dns = (unsigned) -1,
.dns_default_route = -1,
link->routes = set_free_with_destructor(link->routes, route_free);
link->routes_foreign = set_free_with_destructor(link->routes_foreign, route_free);
+ link->neighbors = set_free_with_destructor(link->neighbors, neighbor_free);
+ link->neighbors_foreign = set_free_with_destructor(link->neighbors_foreign, neighbor_free);
+
link->addresses = set_free_with_destructor(link->addresses, address_free);
link->addresses_foreign = set_free_with_destructor(link->addresses_foreign, address_free);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
- /* If IPv6 not configured (no static IPv6 address and IPv6LL autoconfiguration is disabled)
- * for this interface, then disable IPv6 else enable it. */
- (void) link_enable_ipv6(link);
-
/* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes
* on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */
if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) {
r = set_put(master->slaves, link);
if (r < 0)
return r;
+ if (r == 0)
+ return 0;
link_ref(link);
return 0;
return false;
}
+static bool link_is_neighbor_configured(Link *link, Neighbor *neighbor) {
+ Neighbor *net_neighbor;
+
+ assert(link);
+ assert(neighbor);
+
+ if (!link->network)
+ return false;
+
+ LIST_FOREACH(neighbors, net_neighbor, link->network->neighbors)
+ if (neighbor_equal(net_neighbor, neighbor))
+ return true;
+
+ return false;
+}
+
static bool link_is_static_route_configured(Link *link, Route *route) {
Route *net_route;
static int link_drop_foreign_config(Link *link) {
Address *address;
+ Neighbor *neighbor;
Route *route;
Iterator i;
int r;
}
}
+ SET_FOREACH(neighbor, link->neighbors_foreign, i) {
+ if (link_is_neighbor_configured(link, neighbor)) {
+ r = neighbor_add(link, neighbor->family, &neighbor->in_addr, &neighbor->lladdr, neighbor->lladdr_size, NULL);
+ if (r < 0)
+ return r;
+ } else {
+ r = neighbor_remove(neighbor, link, NULL);
+ if (r < 0)
+ return r;
+ }
+ }
+
SET_FOREACH(route, link->routes_foreign, i) {
/* do not touch routes managed by the kernel */
if (route->protocol == RTPROT_KERNEL)
continue;
+ /* do not touch multicast route added by kernel */
+ /* FIXME: Why the kernel adds this route with protocol RTPROT_BOOT??? We need to investigate that.
+ * https://tools.ietf.org/html/rfc4862#section-5.4 may explain why. */
+ if (route->protocol == RTPROT_BOOT &&
+ route->family == AF_INET6 &&
+ route->dst_prefixlen == 8 &&
+ in_addr_equal(AF_INET6, &route->dst, &(union in_addr_union) { .in6 = {{{ 0xff,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 }}} }))
+ continue;
+
if (route->protocol == RTPROT_STATIC &&
FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC))
continue;
continue;
if (link_is_static_route_configured(link, route)) {
- r = route_add(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, NULL);
+ r = route_add(link, route->family, &route->dst, route->dst_prefixlen, &route->gw, route->tos, route->priority, route->table, NULL);
if (r < 0)
return r;
} else {
static int link_drop_config(Link *link) {
Address *address, *pool_address;
+ Neighbor *neighbor;
Route *route;
Iterator i;
int r;
}
}
+ SET_FOREACH(neighbor, link->neighbors, i) {
+ r = neighbor_remove(neighbor, link, NULL);
+ if (r < 0)
+ return r;
+ }
+
SET_FOREACH(route, link->routes, i) {
/* do not touch routes managed by the kernel */
if (route->protocol == RTPROT_KERNEL)
assert(link->network);
assert(link->state == LINK_STATE_INITIALIZED);
- if (STRPTR_IN_SET(link->kind, "can", "vcan", "vxcan"))
+ if (link->iftype == ARPHRD_CAN)
return link_configure_can(link);
/* Drop foreign config, but ignore loopback or critical devices.
return r;
}
+ /* If IPv6 configured that is static IPv6 address and IPv6LL autoconfiguration is enabled
+ * for this interface, then enable IPv6 */
+ (void) link_update_ipv6_sysctl(link);
+
r = link_set_proxy_arp(link);
if (r < 0)
return r;
configure:
while ((link = set_steal_first(manager->links_requesting_uuid))) {
+ link_unref(link);
+
r = link_configure(link);
if (r < 0)
link_enter_failed(link);
r = set_put(m->duids_requesting_uuid, duid);
if (r < 0)
return log_oom();
+
+ link_ref(link);
}
return 0;
continue;
}
- r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route);
+ r = route_add(link, family, &route_dst, prefixlen, NULL, tos, priority, table, &route);
if (r < 0)
return log_link_error_errno(link, r, "Failed to add route: %m");
projects / thirdparty / systemd.git / blobdiff