[RFC BK 6/22] xfrm offload v2: add a parameter to xfrm_prune_bundles()

[David Dillow <dave@xxxxxxxxxxxxxx>]

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2005/01/10 00:44:12-05:00 dave@xxxxxxxxxxxxxx 
#   Add a parameter to the decision function(s) used by
#   xfrm_prune_bundles(). This will allow us to have more
#   fine grained selection of bundles pruned (like, say,
#   per device.)
#   
#   Signed-off-by: David Dillow <dave@xxxxxxxxxxxxxx>
# 
# net/xfrm/xfrm_policy.c
#   2005/01/10 00:43:55-05:00 dave@xxxxxxxxxxxxxx +11 -10
#   Add a parameter to the decision function(s) used by
#   xfrm_prune_bundles(). This will allow us to have more
#   fine grained selection of bundles pruned (like, say,
#   per device.)
#   
#   Signed-off-by: David Dillow <dave@xxxxxxxxxxxxxx>
# 
diff -Nru a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
--- a/net/xfrm/xfrm_policy.c    2005-01-10 01:19:37 -05:00
+++ b/net/xfrm/xfrm_policy.c    2005-01-10 01:19:37 -05:00
@@ -724,7 +724,7 @@
        }
 }
 
-static int stale_bundle(struct dst_entry *dst);
+static int stale_bundle(struct dst_entry *dst, void *unused);
 
 static void xfrm_accel_task(void *data)
 {
@@ -744,7 +744,7 @@
                /* stale_bundle() validates that we have a dev, and that it
                * is currently running.
                */
-               if (!stale_bundle(dst) && (dev->features & NETIF_F_IPSEC))
+               if (!stale_bundle(dst, NULL) && (dev->features & NETIF_F_IPSEC))
                        dev->xfrm_bundle_add(dev, dst);
 
                dst_release(dst);
@@ -861,7 +861,7 @@
                }
 
                write_lock_bh(&policy->lock);
-               if (unlikely(policy->dead || stale_bundle(dst))) {
+               if (unlikely(policy->dead || stale_bundle(dst, NULL))) {
                        /* Wow! While we worked on resolving, this
                         * policy has gone. Retry. It is not paranoia,
                         * we just cannot enlist new bundle to dead object.
@@ -1042,14 +1042,14 @@
 
 static struct dst_entry *xfrm_dst_check(struct dst_entry *dst, u32 cookie)
 {
-       if (!stale_bundle(dst))
+       if (!stale_bundle(dst, NULL))
                return dst;
 
        dst_release(dst);
        return NULL;
 }
 
-static int stale_bundle(struct dst_entry *dst)
+static int stale_bundle(struct dst_entry *dst, void *unused)
 {
        struct dst_entry *child = dst;
 
@@ -1092,7 +1092,8 @@
        return dst;
 }
 
-static void xfrm_prune_bundles(int (*func)(struct dst_entry *))
+static void xfrm_prune_bundles(int (*func)(struct dst_entry *, void *),
+                                       void *data)
 {
        int i;
        struct xfrm_policy *pol;
@@ -1104,7 +1105,7 @@
                        write_lock(&pol->lock);
                        dstp = &pol->bundles;
                        while ((dst=*dstp) != NULL) {
-                               if (func(dst)) {
+                               if (func(dst, data)) {
                                        *dstp = dst->next;
                                        dst->next = gc_list;
                                        gc_list = dst;
@@ -1124,19 +1125,19 @@
        }
 }
 
-static int unused_bundle(struct dst_entry *dst)
+static int unused_bundle(struct dst_entry *dst, void *unused)
 {
        return !atomic_read(&dst->__refcnt);
 }
 
 static void __xfrm_garbage_collect(void)
 {
-       xfrm_prune_bundles(unused_bundle);
+       xfrm_prune_bundles(unused_bundle, NULL);
 }
 
 int xfrm_flush_bundles(void)
 {
-       xfrm_prune_bundles(stale_bundle);
+       xfrm_prune_bundles(stale_bundle, NULL);
        return 0;
 }