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-rw-r--r--net/dsa/tag_ocelot.c252
1 files changed, 89 insertions, 163 deletions
diff --git a/net/dsa/tag_ocelot.c b/net/dsa/tag_ocelot.c
index 16a1afd5b8e1..743809b5806b 100644
--- a/net/dsa/tag_ocelot.c
+++ b/net/dsa/tag_ocelot.c
@@ -1,174 +1,74 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright 2019 NXP Semiconductors
*/
+#include <linux/dsa/ocelot.h>
#include <soc/mscc/ocelot.h>
-#include <linux/packing.h>
#include "dsa_priv.h"
-/* The CPU injection header and the CPU extraction header can have 3 types of
- * prefixes: long, short and no prefix. The format of the header itself is the
- * same in all 3 cases.
- *
- * Extraction with long prefix:
- *
- * +-------------------+-------------------+------+------+------------+-------+
- * | ff:ff:ff:ff:ff:ff | ff:ff:ff:ff:ff:ff | 8880 | 000a | extraction | frame |
- * | | | | | header | |
- * +-------------------+-------------------+------+------+------------+-------+
- * 48 bits 48 bits 16 bits 16 bits 128 bits
- *
- * Extraction with short prefix:
- *
- * +------+------+------------+-------+
- * | 8880 | 000a | extraction | frame |
- * | | | header | |
- * +------+------+------------+-------+
- * 16 bits 16 bits 128 bits
- *
- * Extraction with no prefix:
- *
- * +------------+-------+
- * | extraction | frame |
- * | header | |
- * +------------+-------+
- * 128 bits
- *
- *
- * Injection with long prefix:
- *
- * +-------------------+-------------------+------+------+------------+-------+
- * | any dmac | any smac | 8880 | 000a | injection | frame |
- * | | | | | header | |
- * +-------------------+-------------------+------+------+------------+-------+
- * 48 bits 48 bits 16 bits 16 bits 128 bits
- *
- * Injection with short prefix:
- *
- * +------+------+------------+-------+
- * | 8880 | 000a | injection | frame |
- * | | | header | |
- * +------+------+------------+-------+
- * 16 bits 16 bits 128 bits
- *
- * Injection with no prefix:
- *
- * +------------+-------+
- * | injection | frame |
- * | header | |
- * +------------+-------+
- * 128 bits
- *
- * The injection header looks like this (network byte order, bit 127
- * is part of lowest address byte in memory, bit 0 is part of highest
- * address byte):
- *
- * +------+------+------+------+------+------+------+------+
- * 127:120 |BYPASS| MASQ | MASQ_PORT |REW_OP|REW_OP|
- * +------+------+------+------+------+------+------+------+
- * 119:112 | REW_OP |
- * +------+------+------+------+------+------+------+------+
- * 111:104 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 103: 96 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 95: 88 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 87: 80 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 79: 72 | RSV |
- * +------+------+------+------+------+------+------+------+
- * 71: 64 | RSV | DEST |
- * +------+------+------+------+------+------+------+------+
- * 63: 56 | DEST |
- * +------+------+------+------+------+------+------+------+
- * 55: 48 | RSV |
- * +------+------+------+------+------+------+------+------+
- * 47: 40 | RSV | SRC_PORT | RSV |TFRM_TIMER|
- * +------+------+------+------+------+------+------+------+
- * 39: 32 | TFRM_TIMER | RSV |
- * +------+------+------+------+------+------+------+------+
- * 31: 24 | RSV | DP | POP_CNT | CPUQ |
- * +------+------+------+------+------+------+------+------+
- * 23: 16 | CPUQ | QOS_CLASS |TAG_TYPE|
- * +------+------+------+------+------+------+------+------+
- * 15: 8 | PCP | DEI | VID |
- * +------+------+------+------+------+------+------+------+
- * 7: 0 | VID |
- * +------+------+------+------+------+------+------+------+
- *
- * And the extraction header looks like this:
- *
- * +------+------+------+------+------+------+------+------+
- * 127:120 | RSV | REW_OP |
- * +------+------+------+------+------+------+------+------+
- * 119:112 | REW_OP | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 111:104 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 103: 96 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 95: 88 | REW_VAL |
- * +------+------+------+------+------+------+------+------+
- * 87: 80 | REW_VAL | LLEN |
- * +------+------+------+------+------+------+------+------+
- * 79: 72 | LLEN | WLEN |
- * +------+------+------+------+------+------+------+------+
- * 71: 64 | WLEN | RSV |
- * +------+------+------+------+------+------+------+------+
- * 63: 56 | RSV |
- * +------+------+------+------+------+------+------+------+
- * 55: 48 | RSV |
- * +------+------+------+------+------+------+------+------+
- * 47: 40 | RSV | SRC_PORT | ACL_ID |
- * +------+------+------+------+------+------+------+------+
- * 39: 32 | ACL_ID | RSV | SFLOW_ID |
- * +------+------+------+------+------+------+------+------+
- * 31: 24 |ACL_HIT| DP | LRN_FLAGS | CPUQ |
- * +------+------+------+------+------+------+------+------+
- * 23: 16 | CPUQ | QOS_CLASS |TAG_TYPE|
- * +------+------+------+------+------+------+------+------+
- * 15: 8 | PCP | DEI | VID |
- * +------+------+------+------+------+------+------+------+
- * 7: 0 | VID |
- * +------+------+------+------+------+------+------+------+
- */
+static void ocelot_xmit_ptp(struct dsa_port *dp, void *injection,
+ struct sk_buff *clone)
+{
+ struct ocelot *ocelot = dp->ds->priv;
+ struct ocelot_port *ocelot_port;
+ u64 rew_op;
-static struct sk_buff *ocelot_xmit(struct sk_buff *skb,
- struct net_device *netdev)
+ ocelot_port = ocelot->ports[dp->index];
+ rew_op = ocelot_port->ptp_cmd;
+
+ /* Retrieve timestamp ID populated inside skb->cb[0] of the
+ * clone by ocelot_port_add_txtstamp_skb
+ */
+ if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP)
+ rew_op |= clone->cb[0] << 3;
+
+ ocelot_ifh_set_rew_op(injection, rew_op);
+}
+
+static void ocelot_xmit_common(struct sk_buff *skb, struct net_device *netdev,
+ __be32 ifh_prefix, void **ifh)
{
struct dsa_port *dp = dsa_slave_to_port(netdev);
struct sk_buff *clone = DSA_SKB_CB(skb)->clone;
struct dsa_switch *ds = dp->ds;
- struct ocelot *ocelot = ds->priv;
- struct ocelot_port *ocelot_port;
- u8 *prefix, *injection;
- u64 qos_class, rew_op;
-
- ocelot_port = ocelot->ports[dp->index];
+ void *injection;
+ __be32 *prefix;
injection = skb_push(skb, OCELOT_TAG_LEN);
-
prefix = skb_push(skb, OCELOT_SHORT_PREFIX_LEN);
- memcpy(prefix, ocelot_port->xmit_template, OCELOT_TOTAL_TAG_LEN);
-
- /* Fix up the fields which are not statically determined
- * in the template
- */
- qos_class = skb->priority;
- packing(injection, &qos_class, 19, 17, OCELOT_TAG_LEN, PACK, 0);
+ *prefix = ifh_prefix;
+ memset(injection, 0, OCELOT_TAG_LEN);
+ ocelot_ifh_set_bypass(injection, 1);
+ ocelot_ifh_set_src(injection, ds->num_ports);
+ ocelot_ifh_set_qos_class(injection, skb->priority);
/* TX timestamping was requested */
- if (clone) {
- rew_op = ocelot_port->ptp_cmd;
- /* Retrieve timestamp ID populated inside skb->cb[0] of the
- * clone by ocelot_port_add_txtstamp_skb
- */
- if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP)
- rew_op |= clone->cb[0] << 3;
+ if (clone)
+ ocelot_xmit_ptp(dp, injection, clone);
- packing(injection, &rew_op, 125, 117, OCELOT_TAG_LEN, PACK, 0);
- }
+ *ifh = injection;
+}
+
+static struct sk_buff *ocelot_xmit(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct dsa_port *dp = dsa_slave_to_port(netdev);
+ void *injection;
+
+ ocelot_xmit_common(skb, netdev, cpu_to_be32(0x8880000a), &injection);
+ ocelot_ifh_set_dest(injection, BIT_ULL(dp->index));
+
+ return skb;
+}
+
+static struct sk_buff *seville_xmit(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct dsa_port *dp = dsa_slave_to_port(netdev);
+ void *injection;
+
+ ocelot_xmit_common(skb, netdev, cpu_to_be32(0x88800005), &injection);
+ seville_ifh_set_dest(injection, BIT_ULL(dp->index));
return skb;
}
@@ -177,14 +77,13 @@ static struct sk_buff *ocelot_rcv(struct sk_buff *skb,
struct net_device *netdev,
struct packet_type *pt)
{
- struct dsa_port *cpu_dp = netdev->dsa_ptr;
- struct dsa_switch *ds = cpu_dp->ds;
- struct ocelot *ocelot = ds->priv;
u64 src_port, qos_class;
u64 vlan_tci, tag_type;
u8 *start = skb->data;
+ struct dsa_port *dp;
u8 *extraction;
u16 vlan_tpid;
+ u64 cpuq;
/* Revert skb->data by the amount consumed by the DSA master,
* so it points to the beginning of the frame.
@@ -210,10 +109,11 @@ static struct sk_buff *ocelot_rcv(struct sk_buff *skb,
/* Remove from inet csum the extraction header */
skb_postpull_rcsum(skb, start, OCELOT_TOTAL_TAG_LEN);
- packing(extraction, &src_port, 46, 43, OCELOT_TAG_LEN, UNPACK, 0);
- packing(extraction, &qos_class, 19, 17, OCELOT_TAG_LEN, UNPACK, 0);
- packing(extraction, &tag_type, 16, 16, OCELOT_TAG_LEN, UNPACK, 0);
- packing(extraction, &vlan_tci, 15, 0, OCELOT_TAG_LEN, UNPACK, 0);
+ ocelot_xfh_get_src_port(extraction, &src_port);
+ ocelot_xfh_get_qos_class(extraction, &qos_class);
+ ocelot_xfh_get_tag_type(extraction, &tag_type);
+ ocelot_xfh_get_vlan_tci(extraction, &vlan_tci);
+ ocelot_xfh_get_cpuq(extraction, &cpuq);
skb->dev = dsa_master_find_slave(netdev, 0, src_port);
if (!skb->dev)
@@ -228,6 +128,12 @@ static struct sk_buff *ocelot_rcv(struct sk_buff *skb,
skb->offload_fwd_mark = 1;
skb->priority = qos_class;
+#if IS_ENABLED(CONFIG_BRIDGE_MRP)
+ if (eth_hdr(skb)->h_proto == cpu_to_be16(ETH_P_MRP) &&
+ cpuq & BIT(OCELOT_MRP_CPUQ))
+ skb->offload_fwd_mark = 0;
+#endif
+
/* Ocelot switches copy frames unmodified to the CPU. However, it is
* possible for the user to request a VLAN modification through
* VCAP_IS1_ACT_VID_REPLACE_ENA. In this case, what will happen is that
@@ -243,9 +149,10 @@ static struct sk_buff *ocelot_rcv(struct sk_buff *skb,
* equal to the pvid of the ingress port and should not be used for
* processing.
*/
+ dp = dsa_slave_to_port(skb->dev);
vlan_tpid = tag_type ? ETH_P_8021AD : ETH_P_8021Q;
- if (ocelot->ports[src_port]->vlan_aware &&
+ if (dsa_port_is_vlan_filtering(dp) &&
eth_hdr(skb)->h_proto == htons(vlan_tpid)) {
u16 dummy_vlan_tci;
@@ -267,7 +174,26 @@ static const struct dsa_device_ops ocelot_netdev_ops = {
.promisc_on_master = true,
};
-MODULE_LICENSE("GPL v2");
+DSA_TAG_DRIVER(ocelot_netdev_ops);
MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_OCELOT);
-module_dsa_tag_driver(ocelot_netdev_ops);
+static const struct dsa_device_ops seville_netdev_ops = {
+ .name = "seville",
+ .proto = DSA_TAG_PROTO_SEVILLE,
+ .xmit = seville_xmit,
+ .rcv = ocelot_rcv,
+ .overhead = OCELOT_TOTAL_TAG_LEN,
+ .promisc_on_master = true,
+};
+
+DSA_TAG_DRIVER(seville_netdev_ops);
+MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_SEVILLE);
+
+static struct dsa_tag_driver *ocelot_tag_driver_array[] = {
+ &DSA_TAG_DRIVER_NAME(ocelot_netdev_ops),
+ &DSA_TAG_DRIVER_NAME(seville_netdev_ops),
+};
+
+module_dsa_tag_drivers(ocelot_tag_driver_array);
+
+MODULE_LICENSE("GPL v2");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.