From: Vladimir Oltean <olteanv@gmail•com>
To: andrew@lunn•ch, f.fainelli@gmail•com, vivien.didelot@gmail•com,
davem@davemloft•net, jakub.kicinski@netronome•com
Cc: murali.policharla@broadcom•com, stephen@networkplumber•org,
jiri@resnulli•us, idosch@idosch•org, kuba@kernel•org,
nikolay@cumulusnetworks•com, netdev@vger•kernel.org
Subject: [PATCH v3 net-next 7/8] net: dsa: vsc73xx: make the MTU configurable
Date: Fri, 27 Mar 2020 00:40:39 +0200 [thread overview]
Message-ID: <20200326224040.32014-8-olteanv@gmail.com> (raw)
In-Reply-To: <20200326224040.32014-1-olteanv@gmail.com>
From: Vladimir Oltean <vladimir.oltean@nxp•com>
Instead of hardcoding the MTU to the maximum value allowed by the
hardware, obey the value known by the operating system.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp•com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail•com>
---
Changes in v3:
None.
Changes in v2:
None.
drivers/net/dsa/vitesse-vsc73xx-core.c | 30 +++++++++++++++++---------
1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c
index 6e21a2a5cf01..19ce4aa0973b 100644
--- a/drivers/net/dsa/vitesse-vsc73xx-core.c
+++ b/drivers/net/dsa/vitesse-vsc73xx-core.c
@@ -664,16 +664,6 @@ static void vsc73xx_init_port(struct vsc73xx *vsc, int port)
VSC73XX_MAC_CFG_TX_EN |
VSC73XX_MAC_CFG_RX_EN);
- /* Max length, we can do up to 9.6 KiB, so allow that.
- * According to application not "VSC7398 Jumbo Frames" setting
- * up the MTU to 9.6 KB does not affect the performance on standard
- * frames, so just enable it. It is clear from the application note
- * that "9.6 kilobytes" == 9600 bytes.
- */
- vsc73xx_write(vsc, VSC73XX_BLOCK_MAC,
- port,
- VSC73XX_MAXLEN, 9600);
-
/* Flow control for the CPU port:
* Use a zero delay pause frame when pause condition is left
* Obey pause control frames
@@ -1030,6 +1020,24 @@ static void vsc73xx_get_ethtool_stats(struct dsa_switch *ds, int port,
}
}
+static int vsc73xx_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
+{
+ struct vsc73xx *vsc = ds->priv;
+
+ return vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port,
+ VSC73XX_MAXLEN, new_mtu);
+}
+
+/* According to application not "VSC7398 Jumbo Frames" setting
+ * up the MTU to 9.6 KB does not affect the performance on standard
+ * frames. It is clear from the application note that
+ * "9.6 kilobytes" == 9600 bytes.
+ */
+static int vsc73xx_get_max_mtu(struct dsa_switch *ds, int port)
+{
+ return 9600;
+}
+
static const struct dsa_switch_ops vsc73xx_ds_ops = {
.get_tag_protocol = vsc73xx_get_tag_protocol,
.setup = vsc73xx_setup,
@@ -1041,6 +1049,8 @@ static const struct dsa_switch_ops vsc73xx_ds_ops = {
.get_sset_count = vsc73xx_get_sset_count,
.port_enable = vsc73xx_port_enable,
.port_disable = vsc73xx_port_disable,
+ .port_change_mtu = vsc73xx_change_mtu,
+ .port_max_mtu = vsc73xx_get_max_mtu,
};
static int vsc73xx_gpio_get(struct gpio_chip *chip, unsigned int offset)
--
2.17.1
next prev parent reply other threads:[~2020-03-26 22:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 22:40 [PATCH v3 net-next 0/8] Configure the MTU on DSA switches Vladimir Oltean
2020-03-26 22:40 ` [PATCH v3 net-next 1/8] net: phy: bcm7xx: add jumbo frame configuration to PHY Vladimir Oltean
2020-03-26 23:17 ` Florian Fainelli
2020-03-26 22:40 ` [PATCH v3 net-next 2/8] bgmac: configure MTU and add support for frames beyond 8192 byte size Vladimir Oltean
2020-03-26 22:40 ` [PATCH v3 net-next 3/8] net: dsa: configure the MTU for switch ports Vladimir Oltean
2020-03-27 0:06 ` Andrew Lunn
2020-03-27 10:00 ` Vladimir Oltean
2020-03-26 22:40 ` [PATCH v3 net-next 4/8] net: dsa: implement auto-normalization of MTU for bridge hardware datapath Vladimir Oltean
2020-04-02 1:25 ` kbuild test robot
2020-03-26 22:40 ` [PATCH v3 net-next 5/8] net: dsa: b53: add MTU configuration support Vladimir Oltean
2020-03-26 23:16 ` Florian Fainelli
2020-03-27 13:01 ` Vladimir Oltean
2020-03-26 22:40 ` [PATCH v3 net-next 6/8] net: dsa: sja1105: implement the port MTU callbacks Vladimir Oltean
2020-03-26 22:40 ` Vladimir Oltean [this message]
2020-03-26 22:40 ` [PATCH v3 net-next 8/8] net: dsa: felix: support changing the MTU Vladimir Oltean
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200326224040.32014-8-olteanv@gmail.com \
--to=olteanv@gmail$(echo .)com \
--cc=andrew@lunn$(echo .)ch \
--cc=davem@davemloft$(echo .)net \
--cc=f.fainelli@gmail$(echo .)com \
--cc=idosch@idosch$(echo .)org \
--cc=jakub.kicinski@netronome$(echo .)com \
--cc=jiri@resnulli$(echo .)us \
--cc=kuba@kernel$(echo .)org \
--cc=murali.policharla@broadcom$(echo .)com \
--cc=netdev@vger$(echo .)kernel.org \
--cc=nikolay@cumulusnetworks$(echo .)com \
--cc=stephen@networkplumber$(echo .)org \
--cc=vivien.didelot@gmail$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox