From: Maxime Chevallier <maxime.chevallier@bootlin.com>
To: davem@davemloft.net
Cc: Antoine Tenart <antoine.tenart@bootlin.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
thomas.petazzoni@bootlin.com, gregory.clement@bootlin.com,
miquel.raynal@bootlin.com, nadavh@marvell.com,
stefanc@marvell.com, ymarkman@marvell.com, mw@semihalf.com,
Maxime Chevallier <maxime.chevallier@bootlin.com>
Subject: [PATCH net-next 11/18] net: mvpp2: RSS indirection table support
Date: Thu, 12 Jul 2018 13:54:20 +0200 [thread overview]
Message-ID: <20180712115427.27375-12-maxime.chevallier@bootlin.com> (raw)
In-Reply-To: <20180712115427.27375-1-maxime.chevallier@bootlin.com>
From: Antoine Tenart <antoine.tenart@bootlin.com>
This patch adds the RSS indirection table support, allowing to use the
ethtool -x and -X options to dump and set this table.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
[Maxime: Small warning fixes, use one table per port]
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2.h | 3 ++
drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c | 24 ++++++---
drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h | 2 +
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 70 +++++++++++++++++++++++++
4 files changed, 92 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index e6b182d8be5b..2afbbf5e71e2 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -801,6 +801,9 @@ struct mvpp2_port {
bool has_tx_irqs;
u32 tx_time_coal;
+
+ /* RSS indirection table */
+ u32 indir[MVPP22_RSS_TABLE_ENTRIES];
};
/* The mvpp2_tx_desc and mvpp2_rx_desc structures describe the
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
index c8cf3db85ffe..c80a1a549224 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
@@ -107,6 +107,20 @@ void mvpp2_cls_oversize_rxq_set(struct mvpp2_port *port)
mvpp2_write(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG, val);
}
+void mvpp22_rss_fill_table(struct mvpp2_port *port, u32 table)
+{
+ struct mvpp2 *priv = port->priv;
+ int i;
+
+ for (i = 0; i < MVPP22_RSS_TABLE_ENTRIES; i++) {
+ u32 sel = MVPP22_RSS_INDEX_TABLE(table) |
+ MVPP22_RSS_INDEX_TABLE_ENTRY(i);
+ mvpp2_write(priv, MVPP22_RSS_INDEX, sel);
+
+ mvpp2_write(priv, MVPP22_RSS_TABLE_ENTRY, port->indir[i]);
+ }
+}
+
void mvpp22_init_rss(struct mvpp2_port *port)
{
struct mvpp2 *priv = port->priv;
@@ -129,12 +143,8 @@ void mvpp22_init_rss(struct mvpp2_port *port)
/* Configure the first table to evenly distribute the packets across
* real Rx Queues. The table entries map a hash to a port Rx Queue.
*/
- for (i = 0; i < MVPP22_RSS_TABLE_ENTRIES; i++) {
- u32 sel = MVPP22_RSS_INDEX_TABLE(port->id) |
- MVPP22_RSS_INDEX_TABLE_ENTRY(i);
- mvpp2_write(priv, MVPP22_RSS_INDEX, sel);
-
- mvpp2_write(priv, MVPP22_RSS_TABLE_ENTRY, i % port->nrxqs);
- }
+ for (i = 0; i < MVPP22_RSS_TABLE_ENTRIES; i++)
+ port->indir[i] = ethtool_rxfh_indir_default(i, port->nrxqs);
+ mvpp22_rss_fill_table(port, port->id);
}
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h
index e571238a83cc..4c7be7469a92 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h
@@ -32,6 +32,8 @@ struct mvpp2_cls_lookup_entry {
u32 data;
};
+void mvpp22_rss_fill_table(struct mvpp2_port *port, u32 table);
+
void mvpp22_init_rss(struct mvpp2_port *port);
void mvpp2_cls_init(struct mvpp2 *priv);
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 4bc0b893b026..f0b5fb78cd67 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -3821,6 +3821,71 @@ static int mvpp2_ethtool_set_link_ksettings(struct net_device *dev,
return phylink_ethtool_ksettings_set(port->phylink, cmd);
}
+static int mvpp2_ethtool_get_rxnfc(struct net_device *dev,
+ struct ethtool_rxnfc *info, u32 *rules)
+{
+ struct mvpp2_port *port = netdev_priv(dev);
+
+ if (!mvpp22_rss_is_supported())
+ return -EOPNOTSUPP;
+
+ switch (info->cmd) {
+ case ETHTOOL_GRXRINGS:
+ info->data = port->nrxqs;
+ break;
+ default:
+ return -ENOTSUPP;
+ }
+
+ return 0;
+}
+
+static u32 mvpp2_ethtool_get_rxfh_indir_size(struct net_device *dev)
+{
+ return mvpp22_rss_is_supported() ? MVPP22_RSS_TABLE_ENTRIES : 0;
+}
+
+static int mvpp2_ethtool_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
+ u8 *hfunc)
+{
+ struct mvpp2_port *port = netdev_priv(dev);
+
+ if (!mvpp22_rss_is_supported())
+ return -EOPNOTSUPP;
+
+ if (indir)
+ memcpy(indir, port->indir,
+ ARRAY_SIZE(port->indir) * sizeof(port->indir[0]));
+
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_CRC32;
+
+ return 0;
+}
+
+static int mvpp2_ethtool_set_rxfh(struct net_device *dev, const u32 *indir,
+ const u8 *key, const u8 hfunc)
+{
+ struct mvpp2_port *port = netdev_priv(dev);
+
+ if (!mvpp22_rss_is_supported())
+ return -EOPNOTSUPP;
+
+ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_CRC32)
+ return -EOPNOTSUPP;
+
+ if (key)
+ return -EOPNOTSUPP;
+
+ if (indir) {
+ memcpy(port->indir, indir,
+ ARRAY_SIZE(port->indir) * sizeof(port->indir[0]));
+ mvpp22_rss_fill_table(port, port->id);
+ }
+
+ return 0;
+}
+
/* Device ops */
static const struct net_device_ops mvpp2_netdev_ops = {
@@ -3852,6 +3917,11 @@ static const struct ethtool_ops mvpp2_eth_tool_ops = {
.set_pauseparam = mvpp2_ethtool_set_pause_param,
.get_link_ksettings = mvpp2_ethtool_get_link_ksettings,
.set_link_ksettings = mvpp2_ethtool_set_link_ksettings,
+ .get_rxnfc = mvpp2_ethtool_get_rxnfc,
+ .get_rxfh_indir_size = mvpp2_ethtool_get_rxfh_indir_size,
+ .get_rxfh = mvpp2_ethtool_get_rxfh,
+ .set_rxfh = mvpp2_ethtool_set_rxfh,
+
};
/* Used for PPv2.1, or PPv2.2 with the old Device Tree binding that
--
2.11.0
next prev parent reply other threads:[~2018-07-12 11:54 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-12 11:54 [PATCH net-next 00/18] net: mvpp2: add RSS support Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 01/18] net: mvpp2: fix include guards in mvpp2_prs.h Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 02/18] net: mvpp2: define the number of RSS entries per table in mvpp2.h Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 03/18] net: mvpp2: make sure we use single queue mode on PPv2.1 Maxime Chevallier
2018-07-12 14:10 ` Sergei Shtylyov
2018-07-12 11:54 ` [PATCH net-next 04/18] net: mvpp2: make multi queue mode the default mode Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 05/18] net: mvpp2: use RSS only when using multi-queue mode Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 06/18] net: mvpp2: fix hardcoded number of rx queues Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 07/18] net: mvpp2: use only one rx queue per port per CPU Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 08/18] net: mvpp2: fix a typo in the RSS code Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 09/18] net: mvpp2: fix RSS register definitions Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 10/18] net: mvpp2: use one RSS table per port Maxime Chevallier
2018-07-12 11:54 ` Maxime Chevallier [this message]
2018-07-12 11:54 ` [PATCH net-next 12/18] net: mvpp2: improve the distribution of packets on CPUs when using RSS Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 13/18] net: mvpp2: make sure we don't spread load on disabled CPUs Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 14/18] net: mvpp2: rename per-port RSS init function Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 15/18] net: mvpp2: use classifier to assign default rx queue Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 16/18] net: mvpp2: split ingress traffic into multiple flows Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 17/18] net: mvpp2: add an RSS classification step for each flow Maxime Chevallier
2018-07-12 11:54 ` [PATCH net-next 18/18] net: mvpp2: allow setting RSS flow hash parameters with ethtool Maxime Chevallier
2018-07-13 0:31 ` [PATCH net-next 00/18] net: mvpp2: add RSS support David Miller
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