[PATCH 14/20] IPVS: Conditinally use sysctl_lblc{r}_expiration

[Simon Horman <horms@xxxxxxxxxxxx>]

In preparation for not including sysctl_lblc{r}_expiration in
struct netns_ipvs when CONFIG_SYCTL is not defined.

Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
 net/netfilter/ipvs/ip_vs_lblc.c  |   16 +++++++++++++---
 net/netfilter/ipvs/ip_vs_lblcr.c |   21 +++++++++++++++------
 2 files changed, 28 insertions(+), 9 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 6bf7a80..51a27f5 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -63,6 +63,8 @@
 #define CHECK_EXPIRE_INTERVAL   (60*HZ)
 #define ENTRY_TIMEOUT           (6*60*HZ)
 
+#define DEFAULT_EXPIRATION     (24*60*60*HZ)
+
 /*
  *    It is for full expiration check.
  *    When there is no partial expiration check (garbage collection)
@@ -238,6 +240,15 @@ static void ip_vs_lblc_flush(struct ip_vs_lblc_table *tbl)
        }
 }
 
+static int sysctl_lblc_expiration(struct ip_vs_service *svc)
+{
+#ifdef CONFIG_SYSCTL
+       struct netns_ipvs *ipvs = net_ipvs(svc->net);
+       return ipvs->sysctl_lblc_expiration;
+#else
+       return DEFAULT_EXPIRATION;
+#endif
+}
 
 static inline void ip_vs_lblc_full_check(struct ip_vs_service *svc)
 {
@@ -245,7 +256,6 @@ static inline void ip_vs_lblc_full_check(struct 
ip_vs_service *svc)
        struct ip_vs_lblc_entry *en, *nxt;
        unsigned long now = jiffies;
        int i, j;
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
 
        for (i=0, j=tbl->rover; i<IP_VS_LBLC_TAB_SIZE; i++) {
                j = (j + 1) & IP_VS_LBLC_TAB_MASK;
@@ -254,7 +264,7 @@ static inline void ip_vs_lblc_full_check(struct 
ip_vs_service *svc)
                list_for_each_entry_safe(en, nxt, &tbl->bucket[j], list) {
                        if (time_before(now,
                                        en->lastuse +
-                                       ipvs->sysctl_lblc_expiration))
+                                       sysctl_lblc_expiration(svc)))
                                continue;
 
                        ip_vs_lblc_free(en);
@@ -550,7 +560,7 @@ static int __net_init __ip_vs_lblc_init(struct net *net)
                        return -ENOMEM;
        } else
                ipvs->lblc_ctl_table = vs_vars_table;
-       ipvs->sysctl_lblc_expiration = 24*60*60*HZ;
+       ipvs->sysctl_lblc_expiration = DEFAULT_EXPIRATION;
        ipvs->lblc_ctl_table[0].data = &ipvs->sysctl_lblc_expiration;
 
 #ifdef CONFIG_SYSCTL
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 0063176..7fb9190 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -63,6 +63,8 @@
 #define CHECK_EXPIRE_INTERVAL   (60*HZ)
 #define ENTRY_TIMEOUT           (6*60*HZ)
 
+#define DEFAULT_EXPIRATION     (24*60*60*HZ)
+
 /*
  *    It is for full expiration check.
  *    When there is no partial expiration check (garbage collection)
@@ -410,6 +412,15 @@ static void ip_vs_lblcr_flush(struct ip_vs_lblcr_table 
*tbl)
        }
 }
 
+static int sysctl_lblcr_expiration(struct ip_vs_service *svc)
+{
+#ifdef CONFIG_SYSCTL
+       struct netns_ipvs *ipvs = net_ipvs(svc->net);
+       return ipvs->sysctl_lblcr_expiration;
+#else
+       return DEFAULT_EXPIRATION;
+#endif
+}
 
 static inline void ip_vs_lblcr_full_check(struct ip_vs_service *svc)
 {
@@ -417,15 +428,14 @@ static inline void ip_vs_lblcr_full_check(struct 
ip_vs_service *svc)
        unsigned long now = jiffies;
        int i, j;
        struct ip_vs_lblcr_entry *en, *nxt;
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
 
        for (i=0, j=tbl->rover; i<IP_VS_LBLCR_TAB_SIZE; i++) {
                j = (j + 1) & IP_VS_LBLCR_TAB_MASK;
 
                write_lock(&svc->sched_lock);
                list_for_each_entry_safe(en, nxt, &tbl->bucket[j], list) {
-                       if (time_after(en->lastuse
-                                       + ipvs->sysctl_lblcr_expiration, now))
+                       if (time_after(en->lastuse +
+                                      sysctl_lblcr_expiration(svc), now))
                                continue;
 
                        ip_vs_lblcr_free(en);
@@ -650,7 +660,6 @@ ip_vs_lblcr_schedule(struct ip_vs_service *svc, const 
struct sk_buff *skb)
        read_lock(&svc->sched_lock);
        en = ip_vs_lblcr_get(svc->af, tbl, &iph.daddr);
        if (en) {
-               struct netns_ipvs *ipvs = net_ipvs(svc->net);
                /* We only hold a read lock, but this is atomic */
                en->lastuse = jiffies;
 
@@ -662,7 +671,7 @@ ip_vs_lblcr_schedule(struct ip_vs_service *svc, const 
struct sk_buff *skb)
                /* More than one destination + enough time passed by, cleanup */
                if (atomic_read(&en->set.size) > 1 &&
                                time_after(jiffies, en->set.lastmod +
-                               ipvs->sysctl_lblcr_expiration)) {
+                               sysctl_lblcr_expiration(svc))) {
                        struct ip_vs_dest *m;
 
                        write_lock(&en->set.lock);
@@ -746,7 +755,7 @@ static int __net_init __ip_vs_lblcr_init(struct net *net)
                        return -ENOMEM;
        } else
                ipvs->lblcr_ctl_table = vs_vars_table;
-       ipvs->sysctl_lblcr_expiration = 24*60*60*HZ;
+       ipvs->sysctl_lblcr_expiration = DEFAULT_EXPIRATION;
        ipvs->lblcr_ctl_table[0].data = &ipvs->sysctl_lblcr_expiration;
 
 #ifdef CONFIG_SYSCTL
-- 
1.7.2.3

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