ipv4: Kill RT_CACHE_DEBUG

It's way past it's usefulness.  And this gets rid of a bunch
of stray ->rt_{dst,src} references.

Even the comment documenting the macro was inaccurate (stated
default was 1 when it's 0).

If reintroduced, it should be done properly, with dynamic debug
facilities.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 22 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index cb93c32027d7..9c5ad86bc783 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -968,10 +968,6 @@ static int rt_garbage_collect(struct dst_ops *ops)
                         break;
 
                 expire >>= 1;
-#if RT_CACHE_DEBUG >= 2
-                printk(KERN_DEBUG "expire>> %u %d %d %d\n", expire,
-                                dst_entries_get_fast(&ipv4_dst_ops), goal, i);
-#endif
 
                 if (dst_entries_get_fast(&ipv4_dst_ops) < ip_rt_max_size)
                         goto out;
@@ -992,10 +988,6 @@ work_done:
             dst_entries_get_fast(&ipv4_dst_ops) < ipv4_dst_ops.gc_thresh ||
             dst_entries_get_slow(&ipv4_dst_ops) < ipv4_dst_ops.gc_thresh)
                 expire = ip_rt_gc_timeout;
-#if RT_CACHE_DEBUG >= 2
-        printk(KERN_DEBUG "expire++ %u %d %d %d\n", expire,
-                        dst_entries_get_fast(&ipv4_dst_ops), goal, rover);
-#endif
 out:    return 0;
 }
 
@@ -1179,16 +1171,6 @@ restart:
 
         rt->dst.rt_next = rt_hash_table[hash].chain;
 
-#if RT_CACHE_DEBUG >= 2
-        if (rt->dst.rt_next) {
-                struct rtable *trt;
-                printk(KERN_DEBUG "rt_cache @%02x: %pI4",
-                       hash, &rt->rt_dst);
-                for (trt = rt->dst.rt_next; trt; trt = trt->dst.rt_next)
-                        printk(" . %pI4", &trt->rt_dst);
-                printk("\n");
-        }
-#endif
         /*
          * Since lookup is lockfree, we must make sure
          * previous writes to rt are committed to memory
@@ -1347,10 +1329,6 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
                         unsigned hash = rt_hash(rt->rt_key_dst, rt->rt_key_src,
                                                 rt->rt_oif,
                                                 rt_genid(dev_net(dst->dev)));
-#if RT_CACHE_DEBUG >= 1
-                        printk(KERN_DEBUG "ipv4_negative_advice: redirect to %pI4/%02x dropped\n",
-                                &rt->rt_dst, rt->rt_key_tos);
-#endif
                         rt_del(hash, rt);
                         ret = NULL;
                 } else if (rt->peer &&