diff options
| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2014-09-10 18:05:26 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-12 17:51:24 -0400 |
| commit | cab41c47d92851de71c74b1a7bdbf0fadf6ae4ba (patch) | |
| tree | 2e39ad3236decf2e77e93190eb108c99f15cee6e /net/core | |
| parent | 72b126a45eaca22fb6a8788e8a89c159f3ae2ac5 (diff) | |
skb: Add documentation for skb_clone_sk
This change adds some documentation to the call skb_clone_sk. This is
meant to help clarify the purpose of the function for other developers.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/skbuff.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index a18dfb02d944..c9da77a95e2d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3511,6 +3511,19 @@ struct sk_buff *sock_dequeue_err_skb(struct sock *sk) } EXPORT_SYMBOL(sock_dequeue_err_skb); +/** + * skb_clone_sk - create clone of skb, and take reference to socket + * @skb: the skb to clone + * + * This function creates a clone of a buffer that holds a reference on + * sk_refcnt. Buffers created via this function are meant to be + * returned using sock_queue_err_skb, or free via kfree_skb. + * + * When passing buffers allocated with this function to sock_queue_err_skb + * it is necessary to wrap the call with sock_hold/sock_put in order to + * prevent the socket from being released prior to being enqueued on + * the sk_error_queue. + */ struct sk_buff *skb_clone_sk(struct sk_buff *skb) { struct sock *sk = skb->sk; |