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-rw-r--r--include/linux/skbuff.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index c5cd016f5120..88d4f2ebbec6 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1715,6 +1715,11 @@ static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)
skb->mac_header += offset;
}
+static inline void skb_pop_mac_header(struct sk_buff *skb)
+{
+ skb->mac_header = skb->network_header;
+}
+
static inline void skb_probe_transport_header(struct sk_buff *skb,
const int offset_hint)
{
@@ -2621,6 +2626,10 @@ static inline void sw_tx_timestamp(struct sk_buff *skb)
* Ethernet MAC Drivers should call this function in their hard_xmit()
* function immediately before giving the sk_buff to the MAC hardware.
*
+ * Specifically, one should make absolutely sure that this function is
+ * called before TX completion of this packet can trigger. Otherwise
+ * the packet could potentially already be freed.
+ *
* @skb: A socket buffer.
*/
static inline void skb_tx_timestamp(struct sk_buff *skb)

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