core: support creating ip6-config setting with disabled methodbg/ipv6-disabled

Create the new setting with method=disabled if IPv6 is disabled in the
sysctl.

1 files changed, 28 insertions, 3 deletions

diff --git a/src/nm-ip6-config.c b/src/nm-ip6-config.c
index baef60bd08..6e3eb88bd9 100644
--- a/src/nm-ip6-config.c
+++ b/src/nm-ip6-config.c
@@ -26,6 +26,7 @@
 #include <arpa/inet.h>
 #include <resolv.h>
 #include <linux/rtnetlink.h>
+#include <linux/if.h>
 
 #include "nm-glib-aux/nm-dedup-multi.h"
 
@@ -77,6 +78,7 @@ typedef struct {
 		NMIPConfigDedupMultiIdxType idx_ip6_routes_;
 		NMDedupMultiIdxType idx_ip6_routes;
 	};
+	bool ipv6_disabled;
 } NMIP6ConfigPrivate;
 
 struct _NMIP6Config {
@@ -382,6 +384,8 @@ nm_ip6_config_capture (NMDedupMultiIndex *multi_idx, NMPlatform *platform, int i
 	const NMDedupMultiHeadEntry *head_entry;
 	NMDedupMultiIter iter;
 	const NMPObject *plobj = NULL;
+	char ifname[IFNAMSIZ];
+	char *path;
 
 	nm_assert (ifindex > 0);
 
@@ -423,6 +427,12 @@ nm_ip6_config_capture (NMDedupMultiIndex *multi_idx, NMPlatform *platform, int i
 	nmp_cache_iter_for_each (&iter, head_entry, &plobj)
 		_add_route (self, plobj, NULL, NULL);
 
+	if (nm_platform_if_indextoname (platform, ifindex, ifname)) {
+		path = nm_sprintf_bufa (128, "/proc/sys/net/ipv6/conf/%s/disable_ipv6", ifname);
+		if (nm_platform_sysctl_get_int32 (platform, NMP_SYSCTL_PATHID_ABSOLUTE (path), 0) != 0)
+			priv->ipv6_disabled = TRUE;
+	}
+
 	return self;
 }
 
@@ -772,8 +782,11 @@ nm_ip6_config_create_setting (const NMIP6Config *self)
 	}
 
 	/* Use 'ignore' if the method wasn't previously set */
-	if (!method)
-		method = NM_SETTING_IP6_CONFIG_METHOD_IGNORE;
+	if (!method) {
+		method = priv->ipv6_disabled
+		    ? NM_SETTING_IP6_CONFIG_METHOD_DISABLED
+		    : NM_SETTING_IP6_CONFIG_METHOD_IGNORE;
+	}
 
 	g_object_set (s_ip6,
 	              NM_SETTING_IP_CONFIG_METHOD, method,
@@ -838,10 +851,15 @@ nm_ip6_config_merge (NMIP6Config *dst,
 	guint32 i;
 	NMDedupMultiIter ipconf_iter;
 	const NMPlatformIP6Address *address = NULL;
+	const NMIP6ConfigPrivate *src_priv;
+	NMIP6ConfigPrivate *dst_priv;
 
 	g_return_if_fail (src != NULL);
 	g_return_if_fail (dst != NULL);
 
+	src_priv = NM_IP6_CONFIG_GET_PRIVATE (src);
+	dst_priv = NM_IP6_CONFIG_GET_PRIVATE (dst);
+
 	g_object_freeze_notify (G_OBJECT (dst));
 
 	/* addresses */
@@ -896,6 +914,9 @@ nm_ip6_config_merge (NMIP6Config *dst,
 	if (nm_ip6_config_get_dns_priority (src))
 		nm_ip6_config_set_dns_priority (dst, nm_ip6_config_get_dns_priority (src));
 
+	if (src_priv->ipv6_disabled)
+		dst_priv->ipv6_disabled = src_priv->ipv6_disabled;
+
 	g_object_thaw_notify (G_OBJECT (dst));
 }
 
@@ -1501,6 +1522,11 @@ nm_ip6_config_replace (NMIP6Config *dst, const NMIP6Config *src, gboolean *relev
 		has_minor_changes = TRUE;
 	}
 
+	if (src_priv->ipv6_disabled != dst_priv->ipv6_disabled) {
+		dst_priv->ipv6_disabled = src_priv->ipv6_disabled;
+		has_minor_changes = TRUE;
+	}
+
 #if NM_MORE_ASSERTS
 	/* config_equal does not compare *all* the fields, therefore, we might have has_minor_changes
 	 * regardless of config_equal. But config_equal must correspond to has_relevant_changes. */
@@ -2291,7 +2317,6 @@ nm_ip6_config_get_dns_priority (const NMIP6Config *self)
 
 	return priv->dns_priority;
 }
-
 /*****************************************************************************/
 
 const NMPObject *