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Message-ID: <20140908161748.13099.29093.stgit@ahduyck-bv4.jf.intel.com> Date: Mon, 08 Sep 2014 12:18:22 -0400 From: Alexander Duyck <alexander.h.duyck@...el.com> To: netdev@...r.kernel.org Cc: richardcochran@...il.com, davem@...emloft.net Subject: [PATCH net-next] 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@...el.com> --- net/core/skbuff.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index a18dfb0..3f83a8a 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3511,6 +3511,17 @@ 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 + * + * For functions such as timestamping it is necessary to clone an skb and + * hold a reference to the socket for it until the hardware delivers the + * actual timestamp or the timestamp is timed out. As as such this + * function is useful for creating a clone to later be handed off to + * skb_complete_tx_timestamp or kfree_skb to take care of cleaning up + * the reference handling for the socket. + */ struct sk_buff *skb_clone_sk(struct sk_buff *skb) { struct sock *sk = skb->sk; -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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