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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>
This commit is contained in:
Yangbo Lu 2019-11-20 16:23:16 +08:00 committed by David S. Miller
parent e23a7b3e8d
commit 400928bf92
2 changed files with 29 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/net/ethernet/mscc/ocelot.c
View File

@ -575,6 +575,32 @@ static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info)
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_buff *skb, struct net_device *dev)
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;
}

2
include/soc/mscc/ocelot.h
View File

@ -543,6 +543,8 @@ int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid);
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