From: Yangbo Lu <yangbo.lu@nxp.com>
To: netdev@vger.kernel.org, "David S . Miller" <davem@davemloft.net>,
"Allan W . Nielsen" <allan.nielsen@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
Cc: Yangbo Lu <yangbo.lu@nxp.com>
Subject: [v2, 4/4] ocelot: add VCAP IS2 rule to trap PTP Ethernet frames
Date: Tue, 13 Aug 2019 10:52:14 +0800 [thread overview]
Message-ID: <20190813025214.18601-5-yangbo.lu@nxp.com> (raw)
In-Reply-To: <20190813025214.18601-1-yangbo.lu@nxp.com>
All the PTP messages over Ethernet have etype 0x88f7 on them.
Use etype as the key to trap PTP messages.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
- Added this patch.
---
drivers/net/ethernet/mscc/ocelot.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 6932e61..40f4e0d 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -1681,6 +1681,33 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port,
}
EXPORT_SYMBOL(ocelot_probe_port);
+static int ocelot_ace_add_ptp_rule(struct ocelot *ocelot)
+{
+ struct ocelot_ace_rule *rule;
+
+ rule = kzalloc(sizeof(*rule), GFP_KERNEL);
+ if (!rule)
+ return -ENOMEM;
+
+ /* Entry for PTP over Ethernet (etype 0x88f7)
+ * Action: trap to CPU port
+ */
+ rule->ocelot = ocelot;
+ rule->prio = 1;
+ rule->type = OCELOT_ACE_TYPE_ETYPE;
+ /* Available on all ingress port except CPU port */
+ rule->ingress_port = ~BIT(ocelot->num_phys_ports);
+ rule->dmac_mc = OCELOT_VCAP_BIT_1;
+ rule->frame.etype.etype.value[0] = 0x88;
+ rule->frame.etype.etype.value[1] = 0xf7;
+ rule->frame.etype.etype.mask[0] = 0xff;
+ rule->frame.etype.etype.mask[1] = 0xff;
+ rule->action = OCELOT_ACL_ACTION_TRAP;
+
+ ocelot_ace_rule_offload_add(rule);
+ return 0;
+}
+
int ocelot_init(struct ocelot *ocelot)
{
u32 port;
@@ -1708,6 +1735,7 @@ int ocelot_init(struct ocelot *ocelot)
ocelot_mact_init(ocelot);
ocelot_vlan_init(ocelot);
ocelot_ace_init(ocelot);
+ ocelot_ace_add_ptp_rule(ocelot);
for (port = 0; port < ocelot->num_phys_ports; port++) {
/* Clear all counters (5 groups) */
--
2.7.4
next prev parent reply other threads:[~2019-08-13 2:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-13 2:52 [v2, 0/4] ocelot: support PTP Ethernet frames trapping Yangbo Lu
2019-08-13 2:52 ` [v2, 1/4] ocelot_ace: drop member port from ocelot_ace_rule structure Yangbo Lu
2019-08-13 2:52 ` [v2, 2/4] ocelot_ace: fix ingress ports setting for rule Yangbo Lu
2019-08-13 2:52 ` [v2, 3/4] ocelot_ace: fix action of trap Yangbo Lu
2019-08-13 6:16 ` Allan W . Nielsen
2019-08-13 6:30 ` Allan W . Nielsen
2019-08-14 4:35 ` Y.b. Lu
2019-08-20 4:23 ` Y.b. Lu
2019-08-13 2:52 ` Yangbo Lu [this message]
2019-08-13 6:25 ` [v2, 4/4] ocelot: add VCAP IS2 rule to trap PTP Ethernet frames Allan W . Nielsen
2019-08-14 4:56 ` Y.b. Lu
2019-08-14 9:16 ` Allan W . Nielsen
2019-08-15 12:08 ` Y.b. Lu
2019-08-15 12:45 ` Andrew Lunn
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