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authorPatrick McHardy <kaber@trash.net>2006-08-11 10:10:46 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-23 01:54:26 +0400
commit1af5a8c4a11cfed0c9a7f30fcfb689981750599c (patch)
tree9affafefd0b4a023d527e3f5d386957bd1dace7b /net/ipv4/fib_hash.c
parent9e762a4a89b302cb3b26a1f9bb33eff459eaeca9 (diff)
downloadlinux-1af5a8c4a11cfed0c9a7f30fcfb689981750599c.tar.xz
[IPV4]: Increase number of possible routing tables to 2^32
Increase the number of possible routing tables to 2^32 by replacing the fixed sized array of pointers by a hash table and replacing iterations over all possible table IDs by hash table walking. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_hash.c')
-rw-r--r--net/ipv4/fib_hash.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index f8d5c8024ccb..b5bee1a71e5c 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -684,7 +684,7 @@ fn_hash_dump_bucket(struct sk_buff *skb, struct netlink_callback *cb,
struct fib_node *f;
int i, s_i;
- s_i = cb->args[3];
+ s_i = cb->args[4];
i = 0;
hlist_for_each_entry(f, node, head, fn_hash) {
struct fib_alias *fa;
@@ -704,14 +704,14 @@ fn_hash_dump_bucket(struct sk_buff *skb, struct netlink_callback *cb,
fa->fa_tos,
fa->fa_info,
NLM_F_MULTI) < 0) {
- cb->args[3] = i;
+ cb->args[4] = i;
return -1;
}
next:
i++;
}
}
- cb->args[3] = i;
+ cb->args[4] = i;
return skb->len;
}
@@ -722,21 +722,21 @@ fn_hash_dump_zone(struct sk_buff *skb, struct netlink_callback *cb,
{
int h, s_h;
- s_h = cb->args[2];
+ s_h = cb->args[3];
for (h=0; h < fz->fz_divisor; h++) {
if (h < s_h) continue;
if (h > s_h)
- memset(&cb->args[3], 0,
- sizeof(cb->args) - 3*sizeof(cb->args[0]));
+ memset(&cb->args[4], 0,
+ sizeof(cb->args) - 4*sizeof(cb->args[0]));
if (fz->fz_hash == NULL ||
hlist_empty(&fz->fz_hash[h]))
continue;
if (fn_hash_dump_bucket(skb, cb, tb, fz, &fz->fz_hash[h])<0) {
- cb->args[2] = h;
+ cb->args[3] = h;
return -1;
}
}
- cb->args[2] = h;
+ cb->args[3] = h;
return skb->len;
}
@@ -746,21 +746,21 @@ static int fn_hash_dump(struct fib_table *tb, struct sk_buff *skb, struct netlin
struct fn_zone *fz;
struct fn_hash *table = (struct fn_hash*)tb->tb_data;
- s_m = cb->args[1];
+ s_m = cb->args[2];
read_lock(&fib_hash_lock);
for (fz = table->fn_zone_list, m=0; fz; fz = fz->fz_next, m++) {
if (m < s_m) continue;
if (m > s_m)
- memset(&cb->args[2], 0,
- sizeof(cb->args) - 2*sizeof(cb->args[0]));
+ memset(&cb->args[3], 0,
+ sizeof(cb->args) - 3*sizeof(cb->args[0]));
if (fn_hash_dump_zone(skb, cb, tb, fz) < 0) {
- cb->args[1] = m;
+ cb->args[2] = m;
read_unlock(&fib_hash_lock);
return -1;
}
}
read_unlock(&fib_hash_lock);
- cb->args[1] = m;
+ cb->args[2] = m;
return skb->len;
}