diff options
| author | Yangbo Lu <yangbo.lu@nxp.com> | 2021-04-27 07:21:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-28 00:10:15 +0300 |
| commit | 5c5416f5d4c75fe6aba56f6c2c45a070b5e7cc78 (patch) | |
| tree | 4695af6b67ad7e9e1fce5e93e93dd19be221ba01 /net/dsa | |
| parent | cf536ea3c7eefb26082836eb7f930b293dd38345 (diff) | |
| download | linux-5c5416f5d4c75fe6aba56f6c2c45a070b5e7cc78.tar.xz | |
net: dsa: no longer clone skb in core driver
It was a waste to clone skb directly in dsa_skb_tx_timestamp().
For one-step timestamping, a clone was not needed. For any failure of
port_txtstamp (this may usually happen), the skb clone had to be freed.
So this patch moves skb cloning for tx timestamp out of dsa core, and
let drivers clone skb in port_txtstamp if they really need.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Tested-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/slave.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c index acaa52e60d7f..85e51f46a9d5 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -555,7 +555,6 @@ static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p, struct sk_buff *skb) { struct dsa_switch *ds = p->dp->ds; - struct sk_buff *clone; if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) return; @@ -563,16 +562,7 @@ static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p, if (!ds->ops->port_txtstamp) return; - clone = skb_clone_sk(skb); - if (!clone) - return; - - if (ds->ops->port_txtstamp(ds, p->dp->index, clone)) { - DSA_SKB_CB(skb)->clone = clone; - return; - } - - kfree_skb(clone); + ds->ops->port_txtstamp(ds, p->dp->index, skb); } netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev) |