openwrtv3/target/linux/generic/patches-4.1/653-disable_netlink_trim.patch
Hauke Mehrtens 93b50ade93 kernel/4.1: update to version 4.1.15
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 48223
2016-01-12 20:51:34 +00:00

30 lines
664 B
Diff

--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1776,27 +1776,7 @@ void netlink_detachskb(struct sock *sk,
static struct sk_buff *netlink_trim(struct sk_buff *skb, gfp_t allocation)
{
- int delta;
-
WARN_ON(skb->sk != NULL);
- if (netlink_skb_is_mmaped(skb))
- return skb;
-
- delta = skb->end - skb->tail;
- if (is_vmalloc_addr(skb->head) || delta * 2 < skb->truesize)
- return skb;
-
- if (skb_shared(skb)) {
- struct sk_buff *nskb = skb_clone(skb, allocation);
- if (!nskb)
- return skb;
- consume_skb(skb);
- skb = nskb;
- }
-
- if (!pskb_expand_head(skb, 0, -delta, allocation))
- skb->truesize -= delta;
-
return skb;
}