diff options
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 700189604f3d..d11bbe0da355 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -4151,6 +4151,18 @@ err_free: } EXPORT_SYMBOL(skb_vlan_untag); +int skb_ensure_writable(struct sk_buff *skb, int write_len) +{ + if (!pskb_may_pull(skb, write_len)) + return -ENOMEM; + + if (!skb_cloned(skb) || skb_clone_writable(skb, write_len)) + return 0; + + return pskb_expand_head(skb, 0, 0, GFP_ATOMIC); +} +EXPORT_SYMBOL(skb_ensure_writable); + /** * alloc_skb_with_frags - allocate skb with page frags * |