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From c0c92f8d9a093faf64397b1874f074e071a5b4e2 Mon Sep 17 00:00:00 2001
From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Wed, 20 Nov 2019 16:23:16 +0800
Subject: [PATCH] net: mscc: ocelot: convert to use
ocelot_port_add_txtstamp_skb()
Convert to use ocelot_port_add_txtstamp_skb() for adding skbs which
require TX timestamp into list. Export it so that DSA Felix driver
could reuse it too.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/mscc/ocelot.c | 43 ++++++++++++++++++++++++--------------
include/soc/mscc/ocelot.h | 2 ++
2 files changed, 29 insertions(+), 16 deletions(-)
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -575,6 +575,32 @@ static int ocelot_gen_ifh(u32 *ifh, stru
return 0;
}
+int ocelot_port_add_txtstamp_skb(struct ocelot_port *ocelot_port,
+ struct sk_buff *skb)
+{
+ struct skb_shared_info *shinfo = skb_shinfo(skb);
+ struct ocelot *ocelot = ocelot_port->ocelot;
+
+ if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP &&
+ ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
+ struct ocelot_skb *oskb =
+ kzalloc(sizeof(struct ocelot_skb), GFP_ATOMIC);
+
+ if (unlikely(!oskb))
+ return -ENOMEM;
+
+ shinfo->tx_flags |= SKBTX_IN_PROGRESS;
+
+ oskb->skb = skb;
+ oskb->id = ocelot_port->ts_id % 4;
+
+ list_add_tail(&oskb->head, &ocelot_port->skbs);
+ return 0;
+ }
+ return -ENODATA;
+}
+EXPORT_SYMBOL(ocelot_port_add_txtstamp_skb);
+
static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ocelot_port_private *priv = netdev_priv(dev);
@@ -637,26 +663,11 @@ static int ocelot_port_xmit(struct sk_bu
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
- if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP &&
- ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
- struct ocelot_skb *oskb =
- kzalloc(sizeof(struct ocelot_skb), GFP_ATOMIC);
-
- if (unlikely(!oskb))
- goto out;
-
- skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-
- oskb->skb = skb;
- oskb->id = ocelot_port->ts_id % 4;
+ if (!ocelot_port_add_txtstamp_skb(ocelot_port, skb)) {
ocelot_port->ts_id++;
-
- list_add_tail(&oskb->head, &ocelot_port->skbs);
-
return NETDEV_TX_OK;
}
-out:
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -543,6 +543,8 @@ int ocelot_vlan_del(struct ocelot *ocelo
int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr);
int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr);
int ocelot_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts);
+int ocelot_port_add_txtstamp_skb(struct ocelot_port *ocelot_port,
+ struct sk_buff *skb);
void ocelot_get_txtstamp(struct ocelot *ocelot);
#endif
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