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Diffstat (limited to 'net/core/skbuff.c')
-rw-r--r--net/core/skbuff.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 4e22e3a35359..65f7757465bd 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -149,7 +149,7 @@ void skb_under_panic(struct sk_buff *skb, int sz, void *here)
void skb_truesize_bug(struct sk_buff *skb)
{
- printk(KERN_ERR "SKB BUG: Invalid truesize (%u) "
+ WARN(net_ratelimit(), KERN_ERR "SKB BUG: Invalid truesize (%u) "
"len=%u, sizeof(sk_buff)=%Zd\n",
skb->truesize, skb->len, sizeof(struct sk_buff));
}
@@ -449,6 +449,18 @@ void kfree_skb(struct sk_buff *skb)
__kfree_skb(skb);
}
+/**
+ * skb_recycle_check - check if skb can be reused for receive
+ * @skb: buffer
+ * @skb_size: minimum receive buffer size
+ *
+ * Checks that the skb passed in is not shared or cloned, and
+ * that it is linear and its head portion at least as large as
+ * skb_size so that it can be recycled as a receive buffer.
+ * If these conditions are met, this function does any necessary
+ * reference count dropping and cleans up the skbuff as if it
+ * just came from __alloc_skb().
+ */
int skb_recycle_check(struct sk_buff *skb, int skb_size)
{
struct skb_shared_info *shinfo;
@@ -474,8 +486,8 @@ int skb_recycle_check(struct sk_buff *skb, int skb_size)
shinfo->frag_list = NULL;
memset(skb, 0, offsetof(struct sk_buff, tail));
- skb_reset_tail_pointer(skb);
skb->data = skb->head + NET_SKB_PAD;
+ skb_reset_tail_pointer(skb);
return 1;
}