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authorMatthew Wilcox <mawilcox@microsoft.com>2017-11-28 10:53:03 -0500
committerMatthew Wilcox <mawilcox@microsoft.com>2018-02-06 16:41:26 -0500
commit85bd0438a249e7a7a0622e0b0b6663595fadcc27 (patch)
tree53120e72ee90b2540145b4079dd03da1044ca43b /net
parent0b4ce8da79d65f9773601619bfc90d096f0a170e (diff)
cls_flower: Convert to idr_alloc_u32
Use the new helper which saves a temporary variable and a few lines of code. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Diffstat (limited to 'net')
-rw-r--r--net/sched/cls_flower.c26
1 files changed, 10 insertions, 16 deletions
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 2162e1c1f382..7d0ce2c40f93 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -865,7 +865,6 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
struct cls_fl_filter *fnew;
struct nlattr **tb;
struct fl_flow_mask mask = {};
- unsigned long idr_index;
int err;
if (!tca[TCA_OPTIONS])
@@ -896,21 +895,17 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
goto errout;
if (!handle) {
- err = idr_alloc_ext(&head->handle_idr, fnew, &idr_index,
- 1, 0x80000000, GFP_KERNEL);
- if (err)
- goto errout;
- fnew->handle = idr_index;
- }
-
- /* user specifies a handle and it doesn't exist */
- if (handle && !fold) {
- err = idr_alloc_ext(&head->handle_idr, fnew, &idr_index,
- handle, handle + 1, GFP_KERNEL);
- if (err)
- goto errout;
- fnew->handle = idr_index;
+ handle = 1;
+ err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
+ INT_MAX, GFP_KERNEL);
+ } else if (!fold) {
+ /* user specifies a handle and it doesn't exist */
+ err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
+ handle, GFP_KERNEL);
}
+ if (err)
+ goto errout;
+ fnew->handle = handle;
if (tb[TCA_FLOWER_FLAGS]) {
fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
@@ -966,7 +961,6 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
*arg = fnew;
if (fold) {
- fnew->handle = handle;
idr_replace(&head->handle_idr, fnew, fnew->handle);
list_replace_rcu(&fold->list, &fnew->list);
tcf_unbind_filter(tp, &fold->res);