[PATCH 12/17] cls_flower: Convert to idr_alloc_u32
From: Matthew Wilcox <willy@infradead.org>
Date: 2017-11-28 21:34:36
Also in:
lkml
Subsystem:
networking [general], tc subsystem, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jamal Hadi Salim, Jiri Pirko, Linus Torvalds
From: Matthew Wilcox <redacted> Use the new helper which saves a temporary variable and a few lines of code. Signed-off-by: Matthew Wilcox <redacted> --- net/sched/cls_flower.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index ec0dc92f6104..77a7a3c883b7 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c@@ -858,7 +858,6 @@ 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])
@@ -889,21 +888,17 @@ 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]);
@@ -957,7 +952,6 @@ 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);
--
2.15.0