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Subject[net-next, v3, 1/7] net: dsa: check tx timestamp request in core driver
Date
Check tx timestamp request in core driver at very beginning of
dsa_skb_tx_timestamp(), so that most skbs not requiring tx
timestamp just return. And drop such checking in device drivers.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Tested-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
---
Changes for v2:
- Split from tx timestamp optimization big patch.
Changes for v3:
- None.
---
drivers/net/dsa/hirschmann/hellcreek_hwtstamp.c | 4 ----
drivers/net/dsa/mv88e6xxx/hwtstamp.c | 3 ---
drivers/net/dsa/ocelot/felix.c | 3 +--
net/dsa/slave.c | 3 +++
4 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/net/dsa/hirschmann/hellcreek_hwtstamp.c b/drivers/net/dsa/hirschmann/hellcreek_hwtstamp.c
index 69dd9a2e8bb6..6ba5e2333066 100644
--- a/drivers/net/dsa/hirschmann/hellcreek_hwtstamp.c
+++ b/drivers/net/dsa/hirschmann/hellcreek_hwtstamp.c
@@ -382,10 +382,6 @@ bool hellcreek_port_txtstamp(struct dsa_switch *ds, int port,

ps = &hellcreek->ports[port].port_hwtstamp;

- /* Check if the driver is expected to do HW timestamping */
- if (!(skb_shinfo(clone)->tx_flags & SKBTX_HW_TSTAMP))
- return false;
-
/* Make sure the message is a PTP message that needs to be timestamped
* and the interaction with the HW timestamping is enabled. If not, stop
* here
diff --git a/drivers/net/dsa/mv88e6xxx/hwtstamp.c b/drivers/net/dsa/mv88e6xxx/hwtstamp.c
index 094d17a1d037..05ca1d3c6498 100644
--- a/drivers/net/dsa/mv88e6xxx/hwtstamp.c
+++ b/drivers/net/dsa/mv88e6xxx/hwtstamp.c
@@ -475,9 +475,6 @@ bool mv88e6xxx_port_txtstamp(struct dsa_switch *ds, int port,
struct mv88e6xxx_port_hwtstamp *ps = &chip->port_hwtstamp[port];
struct ptp_header *hdr;

- if (!(skb_shinfo(clone)->tx_flags & SKBTX_HW_TSTAMP))
- return false;
-
hdr = mv88e6xxx_should_tstamp(chip, port, clone, type);
if (!hdr)
return false;
diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index 6b5442be0230..1379f86d71ec 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -1401,8 +1401,7 @@ static bool felix_txtstamp(struct dsa_switch *ds, int port,
struct ocelot *ocelot = ds->priv;
struct ocelot_port *ocelot_port = ocelot->ports[port];

- if (ocelot->ptp && (skb_shinfo(clone)->tx_flags & SKBTX_HW_TSTAMP) &&
- ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
+ if (ocelot->ptp && ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
ocelot_port_add_txtstamp_skb(ocelot, port, clone);
return true;
}
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 77b33bd161b8..b2a802e9330e 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -559,6 +559,9 @@ static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p,
struct sk_buff *clone;
unsigned int type;

+ if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
+ return;
+
type = ptp_classify_raw(skb);
if (type == PTP_CLASS_NONE)
return;
--
2.25.1
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