This is necessary to validate that we're not accidentally enabling
heterogeneous pool incompatible features like syncing.
Signed-off-by: Alex Gartrell <agartrell@xxxxxx>
---
include/net/ip_vs.h | 4 ++++
net/netfilter/ipvs/ip_vs_ctl.c | 9 +++++++++
2 files changed, 13 insertions(+)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 7600dbe..576d7f0 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -990,6 +990,10 @@ struct netns_ipvs {
char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
/* net name space ptr */
struct net *net; /* Needed by timer routines */
+ /* Number of heterogeneous destinations, needed because
+ * heterogeneous are not supported when synchronization is
+ * enabled */
+ unsigned int mixed_address_family_dests;
};
#define DEFAULT_SYNC_THRESHOLD 3
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 01c813e..beffb8f 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -779,6 +779,12 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
struct ip_vs_scheduler *sched;
int conn_flags;
+ /* We cannot modify an address and change the address family */
+ BUG_ON(!add && udest->af != dest->af);
+
+ if (add && udest->af != svc->af)
+ ipvs->mixed_address_family_dests++;
+
/* set the weight and the flags */
atomic_set(&dest->weight, udest->weight);
conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK;
@@ -1061,6 +1067,9 @@ static void __ip_vs_unlink_dest(struct ip_vs_service *svc,
list_del_rcu(&dest->n_list);
svc->num_dests--;
+ if (dest->af != svc->af)
+ net_ipvs(svc->net)->mixed_address_family_dests--;
+
if (svcupd) {
struct ip_vs_scheduler *sched;
--
1.8.1
--
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