ipvs: add backup_only flag to avoid loops

[karo-tx-linux.git] / include / net / ip_vs.h

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 68c69d54d39281ee033d765a1b9b66567c55d06f..fce8e6b66d558d8ff8bb629c4da5e358113a675e 100644 (file)
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -976,6 +976,7 @@ struct netns_ipvs {
        int                     sysctl_sync_retries;
        int                     sysctl_nat_icmp_send;
        int                     sysctl_pmtu_disc;
+       int                     sysctl_backup_only;
 
        /* ip_vs_lblc */
        int                     sysctl_lblc_expiration;
@@ -1067,6 +1068,12 @@ static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs)
        return ipvs->sysctl_pmtu_disc;
 }
 
+static inline int sysctl_backup_only(struct netns_ipvs *ipvs)
+{
+       return ipvs->sync_state & IP_VS_STATE_BACKUP &&
+              ipvs->sysctl_backup_only;
+}
+
 #else
 
 static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs)
@@ -1114,6 +1121,11 @@ static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs)
        return 1;
 }
 
+static inline int sysctl_backup_only(struct netns_ipvs *ipvs)
+{
+       return 0;
+}
+
 #endif
 
 /*