summaryrefslogtreecommitdiff
path: root/net/dsa
diff options
context:
space:
mode:
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/Kconfig11
-rw-r--r--net/dsa/Makefile1
-rw-r--r--net/dsa/slave.c37
-rw-r--r--net/dsa/tag_ksz.c59
-rw-r--r--net/dsa/tag_rzn1_a5psw.c113
5 files changed, 213 insertions, 8 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
index 8cb87b5067ee..3eef72ce99a4 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -87,10 +87,10 @@ config NET_DSA_TAG_MTK
Mediatek switches.
config NET_DSA_TAG_KSZ
- tristate "Tag driver for Microchip 8795/9477/9893 families of switches"
+ tristate "Tag driver for Microchip 8795/937x/9477/9893 families of switches"
help
Say Y if you want to enable support for tagging frames for the
- Microchip 8795/9477/9893 families of switches.
+ Microchip 8795/937x/9477/9893 families of switches.
config NET_DSA_TAG_OCELOT
tristate "Tag driver for Ocelot family of switches, using NPI port"
@@ -132,6 +132,13 @@ config NET_DSA_TAG_RTL8_4
Say Y or M if you want to enable support for tagging frames for Realtek
switches with 8 byte protocol 4 tags, such as the Realtek RTL8365MB-VC.
+config NET_DSA_TAG_RZN1_A5PSW
+ tristate "Tag driver for Renesas RZ/N1 A5PSW switch"
+ help
+ Say Y or M if you want to enable support for tagging frames for
+ Renesas RZ/N1 embedded switch that uses an 8 byte tag located after
+ destination MAC address.
+
config NET_DSA_TAG_LAN9303
tristate "Tag driver for SMSC/Microchip LAN9303 family of switches"
help
diff --git a/net/dsa/Makefile b/net/dsa/Makefile
index 9f75820e7c98..af28c24ead18 100644
--- a/net/dsa/Makefile
+++ b/net/dsa/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_NET_DSA_TAG_OCELOT_8021Q) += tag_ocelot_8021q.o
obj-$(CONFIG_NET_DSA_TAG_QCA) += tag_qca.o
obj-$(CONFIG_NET_DSA_TAG_RTL4_A) += tag_rtl4_a.o
obj-$(CONFIG_NET_DSA_TAG_RTL8_4) += tag_rtl8_4.o
+obj-$(CONFIG_NET_DSA_TAG_RZN1_A5PSW) += tag_rzn1_a5psw.o
obj-$(CONFIG_NET_DSA_TAG_SJA1105) += tag_sja1105.o
obj-$(CONFIG_NET_DSA_TAG_TRAILER) += tag_trailer.o
obj-$(CONFIG_NET_DSA_TAG_XRS700X) += tag_xrs700x.o
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 801a5d445833..ad6a6663feeb 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -935,10 +935,10 @@ static void dsa_slave_get_ethtool_stats(struct net_device *dev,
s = per_cpu_ptr(dev->tstats, i);
do {
start = u64_stats_fetch_begin_irq(&s->syncp);
- tx_packets = s->tx_packets;
- tx_bytes = s->tx_bytes;
- rx_packets = s->rx_packets;
- rx_bytes = s->rx_bytes;
+ tx_packets = u64_stats_read(&s->tx_packets);
+ tx_bytes = u64_stats_read(&s->tx_bytes);
+ rx_packets = u64_stats_read(&s->rx_packets);
+ rx_bytes = u64_stats_read(&s->rx_bytes);
} while (u64_stats_fetch_retry_irq(&s->syncp, start));
data[0] += tx_packets;
data[1] += tx_bytes;
@@ -1002,6 +1002,18 @@ dsa_slave_get_eth_ctrl_stats(struct net_device *dev,
ds->ops->get_eth_ctrl_stats(ds, dp->index, ctrl_stats);
}
+static void
+dsa_slave_get_rmon_stats(struct net_device *dev,
+ struct ethtool_rmon_stats *rmon_stats,
+ const struct ethtool_rmon_hist_range **ranges)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct dsa_switch *ds = dp->ds;
+
+ if (ds->ops->get_rmon_stats)
+ ds->ops->get_rmon_stats(ds, dp->index, rmon_stats, ranges);
+}
+
static void dsa_slave_net_selftest(struct net_device *ndev,
struct ethtool_test *etest, u64 *buf)
{
@@ -1097,6 +1109,16 @@ static int dsa_slave_set_link_ksettings(struct net_device *dev,
return phylink_ethtool_ksettings_set(dp->pl, cmd);
}
+static void dsa_slave_get_pause_stats(struct net_device *dev,
+ struct ethtool_pause_stats *pause_stats)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct dsa_switch *ds = dp->ds;
+
+ if (ds->ops->get_pause_stats)
+ ds->ops->get_pause_stats(ds, dp->index, pause_stats);
+}
+
static void dsa_slave_get_pauseparam(struct net_device *dev,
struct ethtool_pauseparam *pause)
{
@@ -2081,12 +2103,14 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = {
.get_eth_phy_stats = dsa_slave_get_eth_phy_stats,
.get_eth_mac_stats = dsa_slave_get_eth_mac_stats,
.get_eth_ctrl_stats = dsa_slave_get_eth_ctrl_stats,
+ .get_rmon_stats = dsa_slave_get_rmon_stats,
.set_wol = dsa_slave_set_wol,
.get_wol = dsa_slave_get_wol,
.set_eee = dsa_slave_set_eee,
.get_eee = dsa_slave_get_eee,
.get_link_ksettings = dsa_slave_get_link_ksettings,
.set_link_ksettings = dsa_slave_set_link_ksettings,
+ .get_pause_stats = dsa_slave_get_pause_stats,
.get_pauseparam = dsa_slave_get_pauseparam,
.set_pauseparam = dsa_slave_set_pauseparam,
.get_rxnfc = dsa_slave_get_rxnfc,
@@ -2460,8 +2484,9 @@ static int dsa_slave_changeupper(struct net_device *dev,
if (!err)
dsa_bridge_mtu_normalization(dp);
if (err == -EOPNOTSUPP) {
- NL_SET_ERR_MSG_MOD(extack,
- "Offloading not supported");
+ if (!extack->_msg)
+ NL_SET_ERR_MSG_MOD(extack,
+ "Offloading not supported");
err = 0;
}
err = notifier_from_errno(err);
diff --git a/net/dsa/tag_ksz.c b/net/dsa/tag_ksz.c
index 3509fc967ca9..38fa19c1e2d5 100644
--- a/net/dsa/tag_ksz.c
+++ b/net/dsa/tag_ksz.c
@@ -193,10 +193,69 @@ static const struct dsa_device_ops ksz9893_netdev_ops = {
DSA_TAG_DRIVER(ksz9893_netdev_ops);
MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_KSZ9893);
+/* For xmit, 2 bytes are added before FCS.
+ * ---------------------------------------------------------------------------
+ * DA(6bytes)|SA(6bytes)|....|Data(nbytes)|tag0(1byte)|tag1(1byte)|FCS(4bytes)
+ * ---------------------------------------------------------------------------
+ * tag0 : represents tag override, lookup and valid
+ * tag1 : each bit represents port (eg, 0x01=port1, 0x02=port2, 0x80=port8)
+ *
+ * For rcv, 1 byte is added before FCS.
+ * ---------------------------------------------------------------------------
+ * DA(6bytes)|SA(6bytes)|....|Data(nbytes)|tag0(1byte)|FCS(4bytes)
+ * ---------------------------------------------------------------------------
+ * tag0 : zero-based value represents port
+ * (eg, 0x00=port1, 0x02=port3, 0x07=port8)
+ */
+#define LAN937X_EGRESS_TAG_LEN 2
+
+#define LAN937X_TAIL_TAG_BLOCKING_OVERRIDE BIT(11)
+#define LAN937X_TAIL_TAG_LOOKUP BIT(12)
+#define LAN937X_TAIL_TAG_VALID BIT(13)
+#define LAN937X_TAIL_TAG_PORT_MASK 7
+
+static struct sk_buff *lan937x_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ const struct ethhdr *hdr = eth_hdr(skb);
+ __be16 *tag;
+ u16 val;
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL && skb_checksum_help(skb))
+ return NULL;
+
+ tag = skb_put(skb, LAN937X_EGRESS_TAG_LEN);
+
+ val = BIT(dp->index);
+
+ if (is_link_local_ether_addr(hdr->h_dest))
+ val |= LAN937X_TAIL_TAG_BLOCKING_OVERRIDE;
+
+ /* Tail tag valid bit - This bit should always be set by the CPU */
+ val |= LAN937X_TAIL_TAG_VALID;
+
+ put_unaligned_be16(val, tag);
+
+ return skb;
+}
+
+static const struct dsa_device_ops lan937x_netdev_ops = {
+ .name = "lan937x",
+ .proto = DSA_TAG_PROTO_LAN937X,
+ .xmit = lan937x_xmit,
+ .rcv = ksz9477_rcv,
+ .needed_tailroom = LAN937X_EGRESS_TAG_LEN,
+};
+
+DSA_TAG_DRIVER(lan937x_netdev_ops);
+MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_LAN937X);
+
static struct dsa_tag_driver *dsa_tag_driver_array[] = {
&DSA_TAG_DRIVER_NAME(ksz8795_netdev_ops),
&DSA_TAG_DRIVER_NAME(ksz9477_netdev_ops),
&DSA_TAG_DRIVER_NAME(ksz9893_netdev_ops),
+ &DSA_TAG_DRIVER_NAME(lan937x_netdev_ops),
};
module_dsa_tag_drivers(dsa_tag_driver_array);
diff --git a/net/dsa/tag_rzn1_a5psw.c b/net/dsa/tag_rzn1_a5psw.c
new file mode 100644
index 000000000000..e2a5ee6ae688
--- /dev/null
+++ b/net/dsa/tag_rzn1_a5psw.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Schneider Electric
+ *
+ * Clément Léger <clement.leger@bootlin.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <net/dsa.h>
+
+#include "dsa_priv.h"
+
+/* To define the outgoing port and to discover the incoming port a TAG is
+ * inserted after Src MAC :
+ *
+ * Dest MAC Src MAC TAG Type
+ * ...| 1 2 3 4 5 6 | 1 2 3 4 5 6 | 1 2 3 4 5 6 7 8 | 1 2 |...
+ * |<--------------->|
+ *
+ * See struct a5psw_tag for layout
+ */
+
+#define ETH_P_DSA_A5PSW 0xE001
+#define A5PSW_TAG_LEN 8
+#define A5PSW_CTRL_DATA_FORCE_FORWARD BIT(0)
+/* This is both used for xmit tag and rcv tagging */
+#define A5PSW_CTRL_DATA_PORT GENMASK(3, 0)
+
+struct a5psw_tag {
+ __be16 ctrl_tag;
+ __be16 ctrl_data;
+ __be16 ctrl_data2_hi;
+ __be16 ctrl_data2_lo;
+};
+
+static struct sk_buff *a5psw_tag_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct a5psw_tag *ptag;
+ u32 data2_val;
+
+ BUILD_BUG_ON(sizeof(*ptag) != A5PSW_TAG_LEN);
+
+ /* The Ethernet switch we are interfaced with needs packets to be at
+ * least 60 bytes otherwise they will be discarded when they enter the
+ * switch port logic.
+ */
+ if (__skb_put_padto(skb, ETH_ZLEN, false))
+ return NULL;
+
+ /* provide 'A5PSW_TAG_LEN' bytes additional space */
+ skb_push(skb, A5PSW_TAG_LEN);
+
+ /* make room between MACs and Ether-Type to insert tag */
+ dsa_alloc_etype_header(skb, A5PSW_TAG_LEN);
+
+ ptag = dsa_etype_header_pos_tx(skb);
+
+ data2_val = FIELD_PREP(A5PSW_CTRL_DATA_PORT, BIT(dp->index));
+ ptag->ctrl_tag = htons(ETH_P_DSA_A5PSW);
+ ptag->ctrl_data = htons(A5PSW_CTRL_DATA_FORCE_FORWARD);
+ ptag->ctrl_data2_lo = htons(data2_val);
+ ptag->ctrl_data2_hi = 0;
+
+ return skb;
+}
+
+static struct sk_buff *a5psw_tag_rcv(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct a5psw_tag *tag;
+ int port;
+
+ if (unlikely(!pskb_may_pull(skb, A5PSW_TAG_LEN))) {
+ dev_warn_ratelimited(&dev->dev,
+ "Dropping packet, cannot pull\n");
+ return NULL;
+ }
+
+ tag = dsa_etype_header_pos_rx(skb);
+
+ if (tag->ctrl_tag != htons(ETH_P_DSA_A5PSW)) {
+ dev_warn_ratelimited(&dev->dev, "Dropping packet due to invalid TAG marker\n");
+ return NULL;
+ }
+
+ port = FIELD_GET(A5PSW_CTRL_DATA_PORT, ntohs(tag->ctrl_data));
+
+ skb->dev = dsa_master_find_slave(dev, 0, port);
+ if (!skb->dev)
+ return NULL;
+
+ skb_pull_rcsum(skb, A5PSW_TAG_LEN);
+ dsa_strip_etype_header(skb, A5PSW_TAG_LEN);
+
+ dsa_default_offload_fwd_mark(skb);
+
+ return skb;
+}
+
+static const struct dsa_device_ops a5psw_netdev_ops = {
+ .name = "a5psw",
+ .proto = DSA_TAG_PROTO_RZN1_A5PSW,
+ .xmit = a5psw_tag_xmit,
+ .rcv = a5psw_tag_rcv,
+ .needed_headroom = A5PSW_TAG_LEN,
+};
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_A5PSW);
+module_dsa_tag_driver(a5psw_netdev_ops);
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-07 11:37:06 +0300