Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / net / ipv4 / route.c

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 5fe2fcf..b873cbc 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -64,7 +64,6 @@
  *             2 of the License, or (at your option) any later version.
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -105,6 +104,7 @@
 #include <net/icmp.h>
 #include <net/xfrm.h>
 #include <net/ip_mp_alg.h>
+#include <net/netevent.h>
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
 #endif
@@ -206,21 +206,27 @@ __u8 ip_tos2prio[16] = {
 struct rt_hash_bucket {
        struct rtable   *chain;
 };
-#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
+#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) || \
+       defined(CONFIG_PROVE_LOCKING)
 /*
  * Instead of using one spinlock for each rt_hash_bucket, we use a table of spinlocks
  * The size of this table is a power of two and depends on the number of CPUS.
+ * (on lockdep we have a quite big spinlock_t, so keep the size down there)
  */
-#if NR_CPUS >= 32
-#define RT_HASH_LOCK_SZ        4096
-#elif NR_CPUS >= 16
-#define RT_HASH_LOCK_SZ        2048
-#elif NR_CPUS >= 8
-#define RT_HASH_LOCK_SZ        1024
-#elif NR_CPUS >= 4
-#define RT_HASH_LOCK_SZ        512
+#ifdef CONFIG_LOCKDEP
+# define RT_HASH_LOCK_SZ       256
 #else
-#define RT_HASH_LOCK_SZ        256
+# if NR_CPUS >= 32
+#  define RT_HASH_LOCK_SZ      4096
+# elif NR_CPUS >= 16
+#  define RT_HASH_LOCK_SZ      2048
+# elif NR_CPUS >= 8
+#  define RT_HASH_LOCK_SZ      1024
+# elif NR_CPUS >= 4
+#  define RT_HASH_LOCK_SZ      512
+# else
+#  define RT_HASH_LOCK_SZ      256
+# endif
 #endif
 
 static spinlock_t      *rt_hash_locks;
@@ -244,7 +250,7 @@ static unsigned int         rt_hash_rnd;
 
 static DEFINE_PER_CPU(struct rt_cache_stat, rt_cache_stat);
 #define RT_CACHE_STAT_INC(field) \
-       (per_cpu(rt_cache_stat, raw_smp_processor_id()).field++)
+       (__raw_get_cpu_var(rt_cache_stat).field++)
 
 static int rt_intern_hash(unsigned hash, struct rtable *rth,
                                struct rtable **res);
@@ -1120,6 +1126,7 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
        struct rtable *rth, **rthp;
        u32  skeys[2] = { saddr, 0 };
        int  ikeys[2] = { dev->ifindex, 0 };
+       struct netevent_redirect netevent;
 
        if (!in_dev)
                return;
@@ -1211,6 +1218,11 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
                                        rt_drop(rt);
                                        goto do_next;
                                }
+                               
+                               netevent.old = &rth->u.dst;
+                               netevent.new = &rt->u.dst;
+                               call_netevent_notifiers(NETEVENT_REDIRECT, 
+                                                       &netevent);
 
                                rt_del(hash, rth);
                                if (!rt_intern_hash(hash, rt, &rt))
@@ -1447,6 +1459,7 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
                }
                dst->metrics[RTAX_MTU-1] = mtu;
                dst_set_expires(dst, ip_rt_mtu_expires);
+               call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
        }
 }