network: move sysctl related functions to networkd-sysctl.c
This commit is contained in:
parent
be9363ccab
commit
5e0534f1c1
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@ -111,6 +111,8 @@ sources = files('''
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networkd-speed-meter.h
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networkd-sriov.c
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networkd-sriov.h
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networkd-sysctl.c
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networkd-sysctl.h
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networkd-util.c
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networkd-util.h
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networkd-wifi.c
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@ -38,6 +38,7 @@
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#include "networkd-neighbor.h"
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#include "networkd-nexthop.h"
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#include "networkd-sriov.h"
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#include "networkd-sysctl.h"
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#include "networkd-radv.h"
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#include "networkd-routing-policy-rule.h"
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#include "networkd-wifi.h"
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@ -106,7 +107,7 @@ bool link_ipv6ll_enabled(Link *link) {
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return link->network->link_local & ADDRESS_FAMILY_IPV6;
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}
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static bool link_ipv6_enabled(Link *link) {
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bool link_ipv6_enabled(Link *link) {
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assert(link);
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if (!socket_ipv6_is_supported())
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@ -128,71 +129,6 @@ static bool link_ipv6_enabled(Link *link) {
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return false;
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}
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bool link_ip_forward_enabled(Link *link, int family) {
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assert(link);
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assert(IN_SET(family, AF_INET, AF_INET6));
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if (family == AF_INET6 && !socket_ipv6_is_supported())
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return false;
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if (link->flags & IFF_LOOPBACK)
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return false;
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if (!link->network)
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return false;
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return link->network->ip_forward & (family == AF_INET ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_IPV6);
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}
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static bool link_proxy_arp_enabled(Link *link) {
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assert(link);
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if (link->flags & IFF_LOOPBACK)
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return false;
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if (!link->network)
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return false;
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if (link->network->proxy_arp < 0)
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return false;
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return true;
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}
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static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) {
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assert(link);
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if (!socket_ipv6_is_supported())
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return _IPV6_PRIVACY_EXTENSIONS_INVALID;
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if (link->flags & IFF_LOOPBACK)
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return _IPV6_PRIVACY_EXTENSIONS_INVALID;
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if (!link->network)
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return _IPV6_PRIVACY_EXTENSIONS_INVALID;
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return link->network->ipv6_privacy_extensions;
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}
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static int link_update_ipv6_sysctl(Link *link) {
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bool enabled;
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int r;
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if (link->flags & IFF_LOOPBACK)
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return 0;
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enabled = link_ipv6_enabled(link);
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if (enabled) {
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r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", false);
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if (r < 0)
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return log_link_warning_errno(link, r, "Cannot enable IPv6: %m");
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log_link_info(link, "IPv6 successfully enabled");
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}
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return 0;
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}
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static bool link_is_enslaved(Link *link) {
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if (link->flags & IFF_SLAVE)
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/* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */
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@ -947,19 +883,6 @@ static int link_set_static_configs(Link *link) {
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return 0;
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}
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static int link_set_proxy_arp(Link *link) {
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int r;
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if (!link_proxy_arp_enabled(link))
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return 0;
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r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "proxy_arp", link->network->proxy_arp > 0);
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m");
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return 0;
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}
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static int link_configure_continue(Link *link);
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static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
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@ -1983,179 +1906,6 @@ static int link_enter_join_netdev(Link *link) {
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return 0;
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}
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static int link_set_ipv4_forward(Link *link) {
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int r;
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if (!link_ipv4_forward_enabled(link))
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return 0;
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/* We propagate the forwarding flag from one interface to the
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* global setting one way. This means: as long as at least one
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* interface was configured at any time that had IP forwarding
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* enabled the setting will stay on for good. We do this
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* primarily to keep IPv4 and IPv6 packet forwarding behaviour
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* somewhat in sync (see below). */
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r = sysctl_write_ip_property(AF_INET, NULL, "ip_forward", "1");
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m");
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return 0;
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}
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static int link_set_ipv6_forward(Link *link) {
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int r;
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if (!link_ipv6_forward_enabled(link))
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return 0;
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/* On Linux, the IPv6 stack does not know a per-interface
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* packet forwarding setting: either packet forwarding is on
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* for all, or off for all. We hence don't bother with a
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* per-interface setting, but simply propagate the interface
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* flag, if it is set, to the global flag, one-way. Note that
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* while IPv4 would allow a per-interface flag, we expose the
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* same behaviour there and also propagate the setting from
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* one to all, to keep things simple (see above). */
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r = sysctl_write_ip_property(AF_INET6, "all", "forwarding", "1");
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m");
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return 0;
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}
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static int link_set_ipv6_privacy_extensions(Link *link) {
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IPv6PrivacyExtensions s;
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int r;
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s = link_ipv6_privacy_extensions(link);
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if (s < 0)
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return 0;
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r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "use_tempaddr", (int) link->network->ipv6_privacy_extensions);
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m");
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return 0;
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}
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static int link_set_ipv6_accept_ra(Link *link) {
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int r;
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/* Make this a NOP if IPv6 is not available */
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if (!socket_ipv6_is_supported())
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return 0;
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if (link->flags & IFF_LOOPBACK)
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return 0;
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if (!link->network)
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return 0;
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r = sysctl_write_ip_property(AF_INET6, link->ifname, "accept_ra", "0");
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m");
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return 0;
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}
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static int link_set_ipv6_dad_transmits(Link *link) {
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int r;
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/* Make this a NOP if IPv6 is not available */
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if (!socket_ipv6_is_supported())
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return 0;
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if (link->flags & IFF_LOOPBACK)
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return 0;
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if (!link->network)
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return 0;
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if (link->network->ipv6_dad_transmits < 0)
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return 0;
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r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits);
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m");
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return 0;
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}
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static int link_set_ipv6_hop_limit(Link *link) {
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int r;
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/* Make this a NOP if IPv6 is not available */
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if (!socket_ipv6_is_supported())
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return 0;
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if (link->flags & IFF_LOOPBACK)
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return 0;
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if (!link->network)
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return 0;
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if (link->network->ipv6_hop_limit < 0)
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return 0;
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r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "hop_limit", link->network->ipv6_hop_limit);
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m");
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return 0;
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}
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static int link_set_ipv6_mtu(Link *link) {
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int r;
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/* Make this a NOP if IPv6 is not available */
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if (!socket_ipv6_is_supported())
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return 0;
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if (link->flags & IFF_LOOPBACK)
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return 0;
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if (link->network->ipv6_mtu == 0)
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return 0;
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/* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes
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* on the interface. Bump up IPv6 MTU bytes to IPV6_MTU_MIN. */
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if (link->network->ipv6_mtu < IPV6_MIN_MTU) {
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log_link_notice(link, "Bumping IPv6 MTU to "STRINGIFY(IPV6_MIN_MTU)" byte minimum required");
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link->network->ipv6_mtu = IPV6_MIN_MTU;
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}
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r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu);
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if (r < 0) {
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if (link->mtu < link->network->ipv6_mtu)
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log_link_warning(link, "Cannot set IPv6 MTU %"PRIu32" higher than device MTU %"PRIu32,
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link->network->ipv6_mtu, link->mtu);
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else
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log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m");
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}
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link->ipv6_mtu_set = true;
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return 0;
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}
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static int link_set_ipv4_accept_local(Link *link) {
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int r;
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if (link->flags & IFF_LOOPBACK)
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return 0;
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if (link->network->ipv4_accept_local < 0)
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return 0;
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r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "accept_local", link->network->ipv4_accept_local);
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if (r < 0)
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log_link_warning_errno(link, r, "Cannot set IPv4 accept_local flag for interface: %m");
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return 0;
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}
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static int link_enumerate_ipv6_tentative_addresses(Link *link) {
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_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
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sd_netlink_message *addr;
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@ -2258,46 +2008,14 @@ int link_configure(Link *link) {
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if (link->iftype == ARPHRD_CAN)
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return link_configure_can(link);
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/* If IPv6 configured that is static IPv6 address and IPv6LL autoconfiguration is enabled
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* for this interface, then enable IPv6 */
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(void) link_update_ipv6_sysctl(link);
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r = link_set_proxy_arp(link);
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r = link_set_sysctl(link);
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if (r < 0)
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return r;
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return r;
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r = link_set_ipv6_proxy_ndp_addresses(link);
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if (r < 0)
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return r;
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r = link_set_ipv4_forward(link);
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if (r < 0)
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return r;
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r = link_set_ipv6_forward(link);
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if (r < 0)
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return r;
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r = link_set_ipv6_privacy_extensions(link);
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if (r < 0)
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return r;
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r = link_set_ipv6_accept_ra(link);
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if (r < 0)
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return r;
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r = link_set_ipv6_dad_transmits(link);
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if (r < 0)
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return r;
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r = link_set_ipv6_hop_limit(link);
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if (r < 0)
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return r;
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r = link_set_ipv4_accept_local(link);
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if (r < 0)
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return r;
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r = link_set_flags(link);
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if (r < 0)
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return r;
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@ -2395,7 +2113,7 @@ static int link_configure_continue(Link *link) {
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* we must set this here, after we've set device mtu */
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r = link_set_ipv6_mtu(link);
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if (r < 0)
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return r;
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log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface, ignoring: %m");
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if (link_has_carrier(link) || link->network->configure_without_carrier) {
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r = link_acquire_conf(link);
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@ -221,17 +221,10 @@ int link_save_and_clean(Link *link);
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int link_carrier_reset(Link *link);
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bool link_has_carrier(Link *link);
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bool link_ipv6_enabled(Link *link);
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bool link_ipv6ll_enabled(Link *link);
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int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
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bool link_ip_forward_enabled(Link *link, int family);
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static inline bool link_ipv4_forward_enabled(Link *link) {
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return link_ip_forward_enabled(link, AF_INET);
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}
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static inline bool link_ipv6_forward_enabled(Link *link) {
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return link_ip_forward_enabled(link, AF_INET6);
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}
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int link_set_mtu(Link *link, uint32_t mtu);
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bool link_ipv4ll_enabled(Link *link, AddressFamily mask);
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@ -14,6 +14,7 @@
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#include "networkd-dhcp6.h"
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#include "networkd-manager.h"
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#include "networkd-ndisc.h"
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#include "networkd-sysctl.h"
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#include "string-table.h"
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#include "string-util.h"
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#include "strv.h"
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@ -57,7 +58,7 @@ bool link_ipv6_accept_ra_enabled(Link *link) {
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*/
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if (link->network->ipv6_accept_ra < 0)
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/* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */
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return !link_ipv6_forward_enabled(link);
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return !link_ip_forward_enabled(link, AF_INET6);
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else if (link->network->ipv6_accept_ra > 0)
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/* accept RA even if ip_forward is enabled */
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return true;
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@ -991,50 +991,6 @@ int config_parse_ipv6token(
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return 0;
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}
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static const char* const ipv6_privacy_extensions_table[_IPV6_PRIVACY_EXTENSIONS_MAX] = {
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[IPV6_PRIVACY_EXTENSIONS_NO] = "no",
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[IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC] = "prefer-public",
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[IPV6_PRIVACY_EXTENSIONS_YES] = "yes",
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};
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DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(ipv6_privacy_extensions, IPv6PrivacyExtensions,
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IPV6_PRIVACY_EXTENSIONS_YES);
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int config_parse_ipv6_privacy_extensions(
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const char* unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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IPv6PrivacyExtensions s, *ipv6_privacy_extensions = data;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(ipv6_privacy_extensions);
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s = ipv6_privacy_extensions_from_string(rvalue);
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if (s < 0) {
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if (streq(rvalue, "kernel"))
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s = _IPV6_PRIVACY_EXTENSIONS_INVALID;
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else {
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log_syntax(unit, LOG_WARNING, filename, line, 0,
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"Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue);
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return 0;
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}
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}
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*ipv6_privacy_extensions = s;
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return 0;
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}
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int config_parse_hostname(
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const char *unit,
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const char *filename,
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@ -21,20 +21,12 @@
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#include "networkd-lldp-tx.h"
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#include "networkd-ndisc.h"
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#include "networkd-radv.h"
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#include "networkd-sysctl.h"
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#include "networkd-util.h"
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#include "ordered-set.h"
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#include "resolve-util.h"
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#include "socket-netlink.h"
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typedef enum IPv6PrivacyExtensions {
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/* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
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IPV6_PRIVACY_EXTENSIONS_NO,
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IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
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IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
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_IPV6_PRIVACY_EXTENSIONS_MAX,
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_IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
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} IPv6PrivacyExtensions;
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typedef enum KeepConfiguration {
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KEEP_CONFIGURATION_NO = 0,
|
||||
KEEP_CONFIGURATION_DHCP_ON_START = 1 << 0,
|
||||
|
@ -329,7 +321,6 @@ bool network_has_static_ipv6_configurations(Network *network);
|
|||
CONFIG_PARSER_PROTOTYPE(config_parse_stacked_netdev);
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_tunnel);
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_ipv6token);
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_privacy_extensions);
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_domains);
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_dns);
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_hostname);
|
||||
|
@ -342,9 +333,6 @@ CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_link_local_address_gen_mode);
|
|||
|
||||
const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
|
||||
|
||||
const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
|
||||
IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
|
||||
|
||||
const char* keep_configuration_to_string(KeepConfiguration i) _const_;
|
||||
KeepConfiguration keep_configuration_from_string(const char *s) _pure_;
|
||||
|
||||
|
|
284
src/network/networkd-sysctl.c
Normal file
284
src/network/networkd-sysctl.c
Normal file
|
@ -0,0 +1,284 @@
|
|||
/* SPDX-License-Identifier: LGPL-2.1+ */
|
||||
|
||||
#include <netinet/in.h>
|
||||
#include <linux/if.h>
|
||||
|
||||
#include "missing_network.h"
|
||||
#include "networkd-link.h"
|
||||
#include "networkd-network.h"
|
||||
#include "networkd-sysctl.h"
|
||||
#include "socket-util.h"
|
||||
#include "string-table.h"
|
||||
#include "sysctl-util.h"
|
||||
|
||||
static int link_update_ipv6_sysctl(Link *link) {
|
||||
assert(link);
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (!link_ipv6_enabled(link))
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", false);
|
||||
}
|
||||
|
||||
static int link_set_proxy_arp(Link *link) {
|
||||
assert(link);
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (!link->network)
|
||||
return 0;
|
||||
|
||||
if (link->network->proxy_arp < 0)
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property_boolean(AF_INET, link->ifname, "proxy_arp", link->network->proxy_arp > 0);
|
||||
}
|
||||
|
||||
bool link_ip_forward_enabled(Link *link, int family) {
|
||||
assert(link);
|
||||
assert(IN_SET(family, AF_INET, AF_INET6));
|
||||
|
||||
if (family == AF_INET6 && !socket_ipv6_is_supported())
|
||||
return false;
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return false;
|
||||
|
||||
if (!link->network)
|
||||
return false;
|
||||
|
||||
return link->network->ip_forward & (family == AF_INET ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_IPV6);
|
||||
}
|
||||
|
||||
static int link_set_ipv4_forward(Link *link) {
|
||||
assert(link);
|
||||
|
||||
if (!link_ip_forward_enabled(link, AF_INET))
|
||||
return 0;
|
||||
|
||||
/* We propagate the forwarding flag from one interface to the
|
||||
* global setting one way. This means: as long as at least one
|
||||
* interface was configured at any time that had IP forwarding
|
||||
* enabled the setting will stay on for good. We do this
|
||||
* primarily to keep IPv4 and IPv6 packet forwarding behaviour
|
||||
* somewhat in sync (see below). */
|
||||
|
||||
return sysctl_write_ip_property(AF_INET, NULL, "ip_forward", "1");
|
||||
}
|
||||
|
||||
static int link_set_ipv6_forward(Link *link) {
|
||||
assert(link);
|
||||
|
||||
if (!link_ip_forward_enabled(link, AF_INET6))
|
||||
return 0;
|
||||
|
||||
/* On Linux, the IPv6 stack does not know a per-interface
|
||||
* packet forwarding setting: either packet forwarding is on
|
||||
* for all, or off for all. We hence don't bother with a
|
||||
* per-interface setting, but simply propagate the interface
|
||||
* flag, if it is set, to the global flag, one-way. Note that
|
||||
* while IPv4 would allow a per-interface flag, we expose the
|
||||
* same behaviour there and also propagate the setting from
|
||||
* one to all, to keep things simple (see above). */
|
||||
|
||||
return sysctl_write_ip_property(AF_INET6, "all", "forwarding", "1");
|
||||
}
|
||||
|
||||
static int link_set_ipv6_privacy_extensions(Link *link) {
|
||||
assert(link);
|
||||
|
||||
if (!socket_ipv6_is_supported())
|
||||
return 0;
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (!link->network)
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property_int(AF_INET6, link->ifname, "use_tempaddr", (int) link->network->ipv6_privacy_extensions);
|
||||
}
|
||||
|
||||
static int link_set_ipv6_accept_ra(Link *link) {
|
||||
assert(link);
|
||||
|
||||
/* Make this a NOP if IPv6 is not available */
|
||||
if (!socket_ipv6_is_supported())
|
||||
return 0;
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (!link->network)
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property(AF_INET6, link->ifname, "accept_ra", "0");
|
||||
}
|
||||
|
||||
static int link_set_ipv6_dad_transmits(Link *link) {
|
||||
assert(link);
|
||||
|
||||
/* Make this a NOP if IPv6 is not available */
|
||||
if (!socket_ipv6_is_supported())
|
||||
return 0;
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (!link->network)
|
||||
return 0;
|
||||
|
||||
if (link->network->ipv6_dad_transmits < 0)
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits);
|
||||
}
|
||||
|
||||
static int link_set_ipv6_hop_limit(Link *link) {
|
||||
assert(link);
|
||||
|
||||
/* Make this a NOP if IPv6 is not available */
|
||||
if (!socket_ipv6_is_supported())
|
||||
return 0;
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (!link->network)
|
||||
return 0;
|
||||
|
||||
if (link->network->ipv6_hop_limit < 0)
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property_int(AF_INET6, link->ifname, "hop_limit", link->network->ipv6_hop_limit);
|
||||
}
|
||||
|
||||
static int link_set_ipv4_accept_local(Link *link) {
|
||||
assert(link);
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (link->network->ipv4_accept_local < 0)
|
||||
return 0;
|
||||
|
||||
return sysctl_write_ip_property_boolean(AF_INET, link->ifname, "accept_local", link->network->ipv4_accept_local > 0);
|
||||
}
|
||||
|
||||
int link_set_sysctl(Link *link) {
|
||||
int r;
|
||||
|
||||
assert(link);
|
||||
|
||||
/* If IPv6 configured that is static IPv6 address and IPv6LL autoconfiguration is enabled
|
||||
* for this interface, then enable IPv6 */
|
||||
r = link_update_ipv6_sysctl(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot enable IPv6, ignoring: %m");
|
||||
|
||||
r = link_set_proxy_arp(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface, ignoring: %m");
|
||||
|
||||
r = link_set_ipv4_forward(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m");
|
||||
|
||||
r = link_set_ipv6_forward(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m");;
|
||||
|
||||
r = link_set_ipv6_privacy_extensions(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface, ignorign: %m");
|
||||
|
||||
r = link_set_ipv6_accept_ra(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface, ignoring: %m");
|
||||
|
||||
r = link_set_ipv6_dad_transmits(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface, ignoring: %m");
|
||||
|
||||
r = link_set_ipv6_hop_limit(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface, ignoring: %m");
|
||||
|
||||
r = link_set_ipv4_accept_local(link);
|
||||
if (r < 0)
|
||||
log_link_warning_errno(link, r, "Cannot set IPv4 accept_local flag for interface, ignoring: %m");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int link_set_ipv6_mtu(Link *link) {
|
||||
int r;
|
||||
|
||||
assert(link);
|
||||
|
||||
/* Make this a NOP if IPv6 is not available */
|
||||
if (!socket_ipv6_is_supported())
|
||||
return 0;
|
||||
|
||||
if (link->flags & IFF_LOOPBACK)
|
||||
return 0;
|
||||
|
||||
if (link->network->ipv6_mtu == 0)
|
||||
return 0;
|
||||
|
||||
r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
link->ipv6_mtu_set = true;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const char* const ipv6_privacy_extensions_table[_IPV6_PRIVACY_EXTENSIONS_MAX] = {
|
||||
[IPV6_PRIVACY_EXTENSIONS_NO] = "no",
|
||||
[IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC] = "prefer-public",
|
||||
[IPV6_PRIVACY_EXTENSIONS_YES] = "yes",
|
||||
};
|
||||
|
||||
DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(ipv6_privacy_extensions, IPv6PrivacyExtensions,
|
||||
IPV6_PRIVACY_EXTENSIONS_YES);
|
||||
|
||||
int config_parse_ipv6_privacy_extensions(
|
||||
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) {
|
||||
|
||||
IPv6PrivacyExtensions s, *ipv6_privacy_extensions = data;
|
||||
|
||||
assert(filename);
|
||||
assert(lvalue);
|
||||
assert(rvalue);
|
||||
assert(ipv6_privacy_extensions);
|
||||
|
||||
s = ipv6_privacy_extensions_from_string(rvalue);
|
||||
if (s < 0) {
|
||||
if (streq(rvalue, "kernel"))
|
||||
s = _IPV6_PRIVACY_EXTENSIONS_INVALID;
|
||||
else {
|
||||
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
||||
"Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
*ipv6_privacy_extensions = s;
|
||||
|
||||
return 0;
|
||||
}
|
26
src/network/networkd-sysctl.h
Normal file
26
src/network/networkd-sysctl.h
Normal file
|
@ -0,0 +1,26 @@
|
|||
/* SPDX-License-Identifier: LGPL-2.1+ */
|
||||
#pragma once
|
||||
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "conf-parser.h"
|
||||
|
||||
typedef struct Link Link;
|
||||
|
||||
typedef enum IPv6PrivacyExtensions {
|
||||
/* The values map to the kernel's /proc/sys/net/ipv6/conf/xxx/use_tempaddr values */
|
||||
IPV6_PRIVACY_EXTENSIONS_NO,
|
||||
IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC,
|
||||
IPV6_PRIVACY_EXTENSIONS_YES, /* aka prefer-temporary */
|
||||
_IPV6_PRIVACY_EXTENSIONS_MAX,
|
||||
_IPV6_PRIVACY_EXTENSIONS_INVALID = -1,
|
||||
} IPv6PrivacyExtensions;
|
||||
|
||||
bool link_ip_forward_enabled(Link *link, int family);
|
||||
int link_set_sysctl(Link *link);
|
||||
int link_set_ipv6_mtu(Link *link);
|
||||
|
||||
const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
|
||||
IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
|
||||
|
||||
CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_privacy_extensions);
|
Loading…
Reference in a new issue