From: Vladimir Oltean <olteanv@gmail.com>
To: f.fainelli@gmail.com, vivien.didelot@gmail.com, andrew@lunn.ch,
davem@davemloft.net, vinicius.gomes@intel.com,
vedang.patel@intel.com, richardcochran@gmail.com
Cc: weifeng.voon@intel.com, jiri@mellanox.com, m-karicheri2@ti.com,
Jose.Abreu@synopsys.com, ilias.apalodimas@linaro.org,
jhs@mojatatu.com, xiyou.wangcong@gmail.com,
kurt.kanzenbach@linutronix.de, netdev@vger.kernel.org,
Vladimir Oltean <olteanv@gmail.com>
Subject: [PATCH v1 net-next 08/15] net: dsa: sja1105: Advertise the 8 TX queues
Date: Mon, 2 Sep 2019 19:25:37 +0300 [thread overview]
Message-ID: <20190902162544.24613-9-olteanv@gmail.com> (raw)
In-Reply-To: <20190902162544.24613-1-olteanv@gmail.com>
This is a preparation patch for the tc-taprio offload (and potentially
for other future offloads such as tc-mqprio).
Instead of looking directly at skb->priority during xmit, let's get the
netdev queue and the queue-to-traffic-class mapping, and put the
resulting traffic class into the dsa_8021q PCP field. The switch is
configured with a 1-to-1 PCP-to-ingress-queue-to-egress-queue mapping
(see vlan_pmap in sja1105_main.c), so the effect is that we can inject
into a front-panel's egress traffic class through VLAN tagging from
Linux, completely transparently.
Unfortunately the switch doesn't look at the VLAN PCP in the case of
management traffic to/from the CPU (link-local frames at
01-80-C2-xx-xx-xx or 01-1B-19-xx-xx-xx) so we can't alter the
transmission queue of this type of traffic on a frame-by-frame basis. It
is only selected through the "hostprio" setting which ATM is harcoded in
the driver to 7.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
---
Changes since RFC:
- None.
drivers/net/dsa/sja1105/sja1105_main.c | 7 ++++++-
net/dsa/tag_sja1105.c | 3 ++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 670c069722d5..8b930cc2dabc 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -384,7 +384,9 @@ static int sja1105_init_general_params(struct sja1105_private *priv)
/* Disallow dynamic changing of the mirror port */
.mirr_ptacu = 0,
.switchid = priv->ds->index,
- /* Priority queue for link-local frames trapped to CPU */
+ /* Priority queue for link-local management frames
+ * (both ingress to and egress from CPU - PTP, STP etc)
+ */
.hostprio = 7,
.mac_fltres1 = SJA1105_LINKLOCAL_FILTER_A,
.mac_flt1 = SJA1105_LINKLOCAL_FILTER_A_MASK,
@@ -1745,6 +1747,9 @@ static int sja1105_setup(struct dsa_switch *ds)
*/
ds->vlan_filtering_is_global = true;
+ /* Advertise the 8 egress queues */
+ ds->num_tx_queues = SJA1105_NUM_TC;
+
/* The DSA/switchdev model brings up switch ports in standalone mode by
* default, and that means vlan_filtering is 0 since they're not under
* a bridge, so it's safe to set up switch tagging at this time.
diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c
index 47ee88163a9d..9c9aff3e52cf 100644
--- a/net/dsa/tag_sja1105.c
+++ b/net/dsa/tag_sja1105.c
@@ -89,7 +89,8 @@ static struct sk_buff *sja1105_xmit(struct sk_buff *skb,
struct dsa_port *dp = dsa_slave_to_port(netdev);
struct dsa_switch *ds = dp->ds;
u16 tx_vid = dsa_8021q_tx_vid(ds, dp->index);
- u8 pcp = skb->priority;
+ u16 queue_mapping = skb_get_queue_mapping(skb);
+ u8 pcp = netdev_txq_to_tc(netdev, queue_mapping);
/* Transmitting management traffic does not rely upon switch tagging,
* but instead SPI-installed management routes. Part 2 of this
--
2.17.1
next prev parent reply other threads:[~2019-09-02 16:26 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-02 16:25 [PATCH v1 net-next 00/15] tc-taprio offload for SJA1105 DSA Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 01/15] net: dsa: sja1105: Change the PTP command access pattern Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 02/15] net: dsa: sja1105: Get rid of global declaration of struct ptp_clock_info Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 03/15] net: dsa: sja1105: Switch to hardware operations for PTP Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 04/15] net: dsa: sja1105: Implement the .gettimex64 system call " Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 05/15] net: dsa: sja1105: Restore PTP time after switch reset Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 06/15] net: dsa: sja1105: Disallow management xmit during " Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 07/15] net: dsa: sja1105: Move PTP data to its own private structure Vladimir Oltean
2019-09-02 16:25 ` Vladimir Oltean [this message]
2019-09-02 16:25 ` [PATCH v1 net-next 09/15] taprio: Add support for hardware offloading Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 10/15] net: dsa: Pass ndo_setup_tc slave callback to drivers Vladimir Oltean
2019-09-04 7:50 ` Kurt Kanzenbach
2019-09-02 16:25 ` [PATCH v1 net-next 11/15] net: dsa: sja1105: Add static config tables for scheduling Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 12/15] net: dsa: sja1105: Configure the Time-Aware Scheduler via tc-taprio offload Vladimir Oltean
2019-09-11 19:45 ` Vinicius Costa Gomes
2019-09-12 1:30 ` Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 13/15] net: dsa: sja1105: Make HOSTPRIO a kernel config Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 14/15] net: dsa: sja1105: Make the PTP command read-write Vladimir Oltean
2019-09-02 16:25 ` [PATCH v1 net-next 15/15] net: dsa: sja1105: Implement state machine for TAS with PTP clock source Vladimir Oltean
2019-09-11 19:43 ` Vinicius Costa Gomes
2019-09-06 12:54 ` [PATCH v1 net-next 00/15] tc-taprio offload for SJA1105 DSA David Miller
2019-09-07 14:45 ` Andrew Lunn
2019-09-08 11:07 ` Vladimir Oltean
2019-09-08 20:42 ` Andrew Lunn
2019-09-09 6:52 ` Richard Cochran
2019-09-09 12:36 ` Joergen Andreasen
2019-09-10 1:46 ` Vladimir Oltean
2019-09-09 7:04 ` Richard Cochran
2019-09-07 13:55 ` David Miller
2019-09-09 23:49 ` Gomes, Vinicius
2019-09-10 1:06 ` Vladimir Oltean
2019-09-11 0:45 ` Gomes, Vinicius
2019-09-11 11:51 ` Vladimir Oltean
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