[NETNS][DST] dst: pass the dst_ops as parameter to the gc functions

The garbage collection function receive the dst_ops structure as
parameter. This is useful for the next incoming patchset because it
will need the dst_ops (there will be several instances) and the
network namespace pointer (contained in the dst_ops).

The protocols which do not take care of the namespaces will not be
impacted by this change (expect for the function signature), they do
just ignore the parameter.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/dst.h b/include/net/dst.h
index e03ea0c..e24a416 100644 (file)
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -89,7 +89,7 @@ struct dst_ops
        __be16                  protocol;
        unsigned                gc_thresh;
 
-       int                     (*gc)(void);
+       int                     (*gc)(struct dst_ops *ops);
        struct dst_entry *      (*check)(struct dst_entry *, __u32 cookie);
        void                    (*destroy)(struct dst_entry *);
        void                    (*ifdown)(struct dst_entry *,

diff --git a/net/core/dst.c b/net/core/dst.c
index 7eceeba..7deef48 100644 (file)
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -165,7 +165,7 @@ void * dst_alloc(struct dst_ops * ops)
        struct dst_entry * dst;
 
        if (ops->gc && atomic_read(&ops->entries) > ops->gc_thresh) {
-               if (ops->gc())
+               if (ops->gc(ops))
                        return NULL;
        }
        dst = kmem_cache_zalloc(ops->kmem_cachep, GFP_ATOMIC);

diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 938ba7d..31be29b 100644 (file)
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -107,7 +107,7 @@ static const int dn_rt_mtu_expires = 10 * 60 * HZ;
 
 static unsigned long dn_rt_deadline;
 
-static int dn_dst_gc(void);
+static int dn_dst_gc(struct dst_ops *ops);
 static struct dst_entry *dn_dst_check(struct dst_entry *, __u32);
 static struct dst_entry *dn_dst_negative_advice(struct dst_entry *);
 static void dn_dst_link_failure(struct sk_buff *);
@@ -185,7 +185,7 @@ static void dn_dst_check_expire(unsigned long dummy)
        mod_timer(&dn_route_timer, now + decnet_dst_gc_interval * HZ);
 }
 
-static int dn_dst_gc(void)
+static int dn_dst_gc(struct dst_ops *ops)
 {
        struct dn_route *rt, **rtp;
        int i;

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1e59c0d..fc01453 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -154,7 +154,7 @@ static void          ipv4_dst_ifdown(struct dst_entry *dst,
 static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst);
 static void             ipv4_link_failure(struct sk_buff *skb);
 static void             ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu);
-static int rt_garbage_collect(void);
+static int rt_garbage_collect(struct dst_ops *ops);
 
 
 static struct dst_ops ipv4_dst_ops = {
@@ -820,7 +820,7 @@ static void rt_secret_rebuild(unsigned long dummy)
    and when load increases it reduces to limit cache size.
  */
 
-static int rt_garbage_collect(void)
+static int rt_garbage_collect(struct dst_ops *ops)
 {
        static unsigned long expire = RT_GC_TIMEOUT;
        static unsigned long last_gc;
@@ -1035,7 +1035,7 @@ restart:
                                int saved_int = ip_rt_gc_min_interval;
                                ip_rt_gc_elasticity     = 1;
                                ip_rt_gc_min_interval   = 0;
-                               rt_garbage_collect();
+                               rt_garbage_collect(&ipv4_dst_ops);
                                ip_rt_gc_min_interval   = saved_int;
                                ip_rt_gc_elasticity     = saved_elasticity;
                                goto restart;

diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 656345f..f04516c 100644 (file)
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -185,7 +185,7 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
        fl->fl4_tos = iph->tos;
 }
 
-static inline int xfrm4_garbage_collect(void)
+static inline int xfrm4_garbage_collect(struct dst_ops *ops)
 {
        xfrm4_policy_afinfo.garbage_collect();
        return (atomic_read(&xfrm4_dst_ops.entries) > xfrm4_dst_ops.gc_thresh*2);

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a429900..4004c5f 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -79,7 +79,7 @@ static struct dst_entry *ip6_negative_advice(struct dst_entry *);
 static void            ip6_dst_destroy(struct dst_entry *);
 static void            ip6_dst_ifdown(struct dst_entry *,
                                       struct net_device *dev, int how);
-static int              ip6_dst_gc(void);
+static int              ip6_dst_gc(struct dst_ops *ops);
 
 static int             ip6_pkt_discard(struct sk_buff *skb);
 static int             ip6_pkt_discard_out(struct sk_buff *skb);
@@ -983,7 +983,7 @@ int ndisc_dst_gc(int *more)
        return freed;
 }
 
-static int ip6_dst_gc(void)
+static int ip6_dst_gc(struct dst_ops *ops)
 {
        static unsigned expire = 30*HZ;
        static unsigned long last_gc;

diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index cf373b4..c25a6b5 100644 (file)
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -212,7 +212,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl, int reverse)
        }
 }
 
-static inline int xfrm6_garbage_collect(void)
+static inline int xfrm6_garbage_collect(struct dst_ops *ops)
 {
        xfrm6_policy_afinfo.garbage_collect();
        return (atomic_read(&xfrm6_dst_ops.entries) > xfrm6_dst_ops.gc_thresh*2);