This source file includes following definitions.
- classify
- skb_clone_tx_timestamp
- skb_defer_rx_timestamp
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7 #include <linux/errqueue.h>
8 #include <linux/phy.h>
9 #include <linux/ptp_classify.h>
10 #include <linux/skbuff.h>
11 #include <linux/export.h>
12
13 static unsigned int classify(const struct sk_buff *skb)
14 {
15 if (likely(skb->dev && skb->dev->phydev &&
16 skb->dev->phydev->drv))
17 return ptp_classify_raw(skb);
18 else
19 return PTP_CLASS_NONE;
20 }
21
22 void skb_clone_tx_timestamp(struct sk_buff *skb)
23 {
24 struct phy_device *phydev;
25 struct sk_buff *clone;
26 unsigned int type;
27
28 if (!skb->sk)
29 return;
30
31 type = classify(skb);
32 if (type == PTP_CLASS_NONE)
33 return;
34
35 phydev = skb->dev->phydev;
36 if (likely(phydev->drv->txtstamp)) {
37 clone = skb_clone_sk(skb);
38 if (!clone)
39 return;
40 phydev->drv->txtstamp(phydev, clone, type);
41 }
42 }
43 EXPORT_SYMBOL_GPL(skb_clone_tx_timestamp);
44
45 bool skb_defer_rx_timestamp(struct sk_buff *skb)
46 {
47 struct phy_device *phydev;
48 unsigned int type;
49
50 if (!skb->dev || !skb->dev->phydev || !skb->dev->phydev->drv)
51 return false;
52
53 if (skb_headroom(skb) < ETH_HLEN)
54 return false;
55
56 __skb_push(skb, ETH_HLEN);
57
58 type = ptp_classify_raw(skb);
59
60 __skb_pull(skb, ETH_HLEN);
61
62 if (type == PTP_CLASS_NONE)
63 return false;
64
65 phydev = skb->dev->phydev;
66 if (likely(phydev->drv->rxtstamp))
67 return phydev->drv->rxtstamp(phydev, skb, type);
68
69 return false;
70 }
71 EXPORT_SYMBOL_GPL(skb_defer_rx_timestamp);