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authorDavid S. Miller <davem@davemloft.net>2014-07-22 00:44:59 -0700
committerDavid S. Miller <davem@davemloft.net>2014-07-22 00:44:59 -0700
commit8fd90bb889635fa1e7f80a3950948cc2e74c1446 (patch)
tree1490343b5ad9f88b9333e53fa9457c00cbf6c2d1 /net/sched
parent1bb4238b17b5de6cdc120970a9d00dd8a44f40df (diff)
parent15ba2236f3556fc01b9ca91394465152b5ea74b6 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts: drivers/infiniband/hw/cxgb4/device.c The cxgb4 conflict was simply overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/cls_u32.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index c39b583ace3..70c0be8d012 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -38,6 +38,7 @@
#include <linux/errno.h>
#include <linux/rtnetlink.h>
#include <linux/skbuff.h>
+#include <linux/bitmap.h>
#include <net/netlink.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>
@@ -460,17 +461,25 @@ static int u32_delete(struct tcf_proto *tp, unsigned long arg)
return 0;
}
+#define NR_U32_NODE (1<<12)
static u32 gen_new_kid(struct tc_u_hnode *ht, u32 handle)
{
struct tc_u_knode *n;
- unsigned int i = 0x7FF;
+ unsigned long i;
+ unsigned long *bitmap = kzalloc(BITS_TO_LONGS(NR_U32_NODE) * sizeof(unsigned long),
+ GFP_KERNEL);
+ if (!bitmap)
+ return handle | 0xFFF;
for (n = ht->ht[TC_U32_HASH(handle)]; n; n = n->next)
- if (i < TC_U32_NODE(n->handle))
- i = TC_U32_NODE(n->handle);
- i++;
+ set_bit(TC_U32_NODE(n->handle), bitmap);
- return handle | (i > 0xFFF ? 0xFFF : i);
+ i = find_next_zero_bit(bitmap, NR_U32_NODE, 0x800);
+ if (i >= NR_U32_NODE)
+ i = find_next_zero_bit(bitmap, NR_U32_NODE, 1);
+
+ kfree(bitmap);
+ return handle | (i >= NR_U32_NODE ? 0xFFF : i);
}
static const struct nla_policy u32_policy[TCA_U32_MAX + 1] = {