prestera-objs := prestera_main.o prestera_hw.o prestera_dsa.o \
prestera_rxtx.o prestera_devlink.o prestera_ethtool.o \
prestera_switchdev.o prestera_acl.o prestera_flow.o \
- prestera_flower.o
+ prestera_flower.o prestera_span.o
obj-$(CONFIG_PRESTERA_PCI) += prestera_pci.o
};
struct prestera_switchdev;
+struct prestera_span;
struct prestera_rxtx;
struct prestera_trap_data;
struct prestera_acl;
struct prestera_switchdev *swdev;
struct prestera_rxtx *rxtx;
struct prestera_acl *acl;
+ struct prestera_span *span;
struct list_head event_handlers;
struct notifier_block netdev_nb;
struct prestera_trap_data *trap_data;
#include "prestera.h"
#include "prestera_hw.h"
#include "prestera_acl.h"
+#include "prestera_span.h"
struct prestera_acl {
struct prestera_switch *sw;
binding = kzalloc(sizeof(*binding), GFP_KERNEL);
if (!binding)
return -ENOMEM;
+ binding->span_id = PRESTERA_SPAN_INVALID_ID;
binding->port = port;
err = prestera_hw_acl_port_bind(port, block->ruleset->id);
struct prestera_flow_block_binding {
struct list_head list;
struct prestera_port *port;
+ int span_id;
};
struct prestera_flow_block {
#include "prestera.h"
#include "prestera_acl.h"
#include "prestera_flow.h"
+#include "prestera_span.h"
#include "prestera_flower.h"
static LIST_HEAD(prestera_block_cb_list);
+static int prestera_flow_block_mall_cb(struct prestera_flow_block *block,
+ struct tc_cls_matchall_offload *f)
+{
+ switch (f->command) {
+ case TC_CLSMATCHALL_REPLACE:
+ return prestera_span_replace(block, f);
+ case TC_CLSMATCHALL_DESTROY:
+ prestera_span_destroy(block);
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
static int prestera_flow_block_flower_cb(struct prestera_flow_block *block,
struct flow_cls_offload *f)
{
switch (type) {
case TC_SETUP_CLSFLOWER:
return prestera_flow_block_flower_cb(block, type_data);
+ case TC_SETUP_CLSMATCHALL:
+ return prestera_flow_block_mall_cb(block, type_data);
default:
return -EOPNOTSUPP;
}
block = flow_block_cb_priv(block_cb);
+ prestera_span_destroy(block);
+
err = prestera_acl_block_unbind(block, port);
if (err)
goto error;
PRESTERA_CMD_TYPE_STP_PORT_SET = 0x1000,
+ PRESTERA_CMD_TYPE_SPAN_GET = 0x1100,
+ PRESTERA_CMD_TYPE_SPAN_BIND = 0x1101,
+ PRESTERA_CMD_TYPE_SPAN_UNBIND = 0x1102,
+ PRESTERA_CMD_TYPE_SPAN_RELEASE = 0x1103,
+
PRESTERA_CMD_TYPE_CPU_CODE_COUNTERS_GET = 0x2000,
PRESTERA_CMD_TYPE_ACK = 0x10000,
u16 id;
};
+struct prestera_msg_span_req {
+ struct prestera_msg_cmd cmd;
+ u32 port;
+ u32 dev;
+ u8 id;
+} __packed __aligned(4);
+
+struct prestera_msg_span_resp {
+ struct prestera_msg_ret ret;
+ u8 id;
+} __packed __aligned(4);
+
struct prestera_msg_stp_req {
struct prestera_msg_cmd cmd;
u32 port;
&req.cmd, sizeof(req));
}
+int prestera_hw_span_get(const struct prestera_port *port, u8 *span_id)
+{
+ struct prestera_msg_span_resp resp;
+ struct prestera_msg_span_req req = {
+ .port = port->hw_id,
+ .dev = port->dev_id,
+ };
+ int err;
+
+ err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_SPAN_GET,
+ &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+ if (err)
+ return err;
+
+ *span_id = resp.id;
+
+ return 0;
+}
+
+int prestera_hw_span_bind(const struct prestera_port *port, u8 span_id)
+{
+ struct prestera_msg_span_req req = {
+ .port = port->hw_id,
+ .dev = port->dev_id,
+ .id = span_id,
+ };
+
+ return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_SPAN_BIND,
+ &req.cmd, sizeof(req));
+}
+
+int prestera_hw_span_unbind(const struct prestera_port *port)
+{
+ struct prestera_msg_span_req req = {
+ .port = port->hw_id,
+ .dev = port->dev_id,
+ };
+
+ return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_SPAN_UNBIND,
+ &req.cmd, sizeof(req));
+}
+
+int prestera_hw_span_release(struct prestera_switch *sw, u8 span_id)
+{
+ struct prestera_msg_span_req req = {
+ .id = span_id
+ };
+
+ return prestera_cmd(sw, PRESTERA_CMD_TYPE_SPAN_RELEASE,
+ &req.cmd, sizeof(req));
+}
+
int prestera_hw_port_type_get(const struct prestera_port *port, u8 *type)
{
struct prestera_msg_port_attr_req req = {
int prestera_hw_acl_port_unbind(const struct prestera_port *port,
u16 ruleset_id);
+/* SPAN API */
+int prestera_hw_span_get(const struct prestera_port *port, u8 *span_id);
+int prestera_hw_span_bind(const struct prestera_port *port, u8 span_id);
+int prestera_hw_span_unbind(const struct prestera_port *port);
+int prestera_hw_span_release(struct prestera_switch *sw, u8 span_id);
+
/* Event handlers */
int prestera_hw_event_handler_register(struct prestera_switch *sw,
enum prestera_event_type type,
#include "prestera_hw.h"
#include "prestera_acl.h"
#include "prestera_flow.h"
+#include "prestera_span.h"
#include "prestera_rxtx.h"
#include "prestera_devlink.h"
#include "prestera_ethtool.h"
if (err)
goto err_acl_init;
+ err = prestera_span_init(sw);
+ if (err)
+ goto err_span_init;
+
err = prestera_devlink_register(sw);
if (err)
goto err_dl_register;
err_lag_init:
prestera_devlink_unregister(sw);
err_dl_register:
+ prestera_span_fini(sw);
+err_span_init:
prestera_acl_fini(sw);
err_acl_init:
prestera_event_handlers_unregister(sw);
prestera_destroy_ports(sw);
prestera_lag_fini(sw);
prestera_devlink_unregister(sw);
+ prestera_span_fini(sw);
prestera_acl_fini(sw);
prestera_event_handlers_unregister(sw);
prestera_rxtx_switch_fini(sw);
--- /dev/null
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2020 Marvell International Ltd. All rights reserved */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+
+#include "prestera.h"
+#include "prestera_hw.h"
+#include "prestera_acl.h"
+#include "prestera_span.h"
+
+struct prestera_span_entry {
+ struct list_head list;
+ struct prestera_port *port;
+ refcount_t ref_count;
+ u8 id;
+};
+
+struct prestera_span {
+ struct prestera_switch *sw;
+ struct list_head entries;
+};
+
+static struct prestera_span_entry *
+prestera_span_entry_create(struct prestera_port *port, u8 span_id)
+{
+ struct prestera_span_entry *entry;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return ERR_PTR(-ENOMEM);
+
+ refcount_set(&entry->ref_count, 1);
+ entry->port = port;
+ entry->id = span_id;
+ list_add_tail(&entry->list, &port->sw->span->entries);
+
+ return entry;
+}
+
+static void prestera_span_entry_del(struct prestera_span_entry *entry)
+{
+ list_del(&entry->list);
+ kfree(entry);
+}
+
+static struct prestera_span_entry *
+prestera_span_entry_find_by_id(struct prestera_span *span, u8 span_id)
+{
+ struct prestera_span_entry *entry;
+
+ list_for_each_entry(entry, &span->entries, list) {
+ if (entry->id == span_id)
+ return entry;
+ }
+
+ return NULL;
+}
+
+static struct prestera_span_entry *
+prestera_span_entry_find_by_port(struct prestera_span *span,
+ struct prestera_port *port)
+{
+ struct prestera_span_entry *entry;
+
+ list_for_each_entry(entry, &span->entries, list) {
+ if (entry->port == port)
+ return entry;
+ }
+
+ return NULL;
+}
+
+static int prestera_span_get(struct prestera_port *port, u8 *span_id)
+{
+ u8 new_span_id;
+ struct prestera_switch *sw = port->sw;
+ struct prestera_span_entry *entry;
+ int err;
+
+ entry = prestera_span_entry_find_by_port(sw->span, port);
+ if (entry) {
+ refcount_inc(&entry->ref_count);
+ *span_id = entry->id;
+ return 0;
+ }
+
+ err = prestera_hw_span_get(port, &new_span_id);
+ if (err)
+ return err;
+
+ entry = prestera_span_entry_create(port, new_span_id);
+ if (IS_ERR(entry)) {
+ prestera_hw_span_release(sw, new_span_id);
+ return PTR_ERR(entry);
+ }
+
+ *span_id = new_span_id;
+ return 0;
+}
+
+static int prestera_span_put(struct prestera_switch *sw, u8 span_id)
+{
+ struct prestera_span_entry *entry;
+ int err;
+
+ entry = prestera_span_entry_find_by_id(sw->span, span_id);
+ if (!entry)
+ return false;
+
+ if (!refcount_dec_and_test(&entry->ref_count))
+ return 0;
+
+ err = prestera_hw_span_release(sw, span_id);
+ if (err)
+ return err;
+
+ prestera_span_entry_del(entry);
+ return 0;
+}
+
+static int prestera_span_rule_add(struct prestera_flow_block_binding *binding,
+ struct prestera_port *to_port)
+{
+ struct prestera_switch *sw = binding->port->sw;
+ u8 span_id;
+ int err;
+
+ if (binding->span_id != PRESTERA_SPAN_INVALID_ID)
+ /* port already in mirroring */
+ return -EEXIST;
+
+ err = prestera_span_get(to_port, &span_id);
+ if (err)
+ return err;
+
+ err = prestera_hw_span_bind(binding->port, span_id);
+ if (err) {
+ prestera_span_put(sw, span_id);
+ return err;
+ }
+
+ binding->span_id = span_id;
+ return 0;
+}
+
+static int prestera_span_rule_del(struct prestera_flow_block_binding *binding)
+{
+ int err;
+
+ err = prestera_hw_span_unbind(binding->port);
+ if (err)
+ return err;
+
+ err = prestera_span_put(binding->port->sw, binding->span_id);
+ if (err)
+ return err;
+
+ binding->span_id = PRESTERA_SPAN_INVALID_ID;
+ return 0;
+}
+
+int prestera_span_replace(struct prestera_flow_block *block,
+ struct tc_cls_matchall_offload *f)
+{
+ struct prestera_flow_block_binding *binding;
+ __be16 protocol = f->common.protocol;
+ struct flow_action_entry *act;
+ struct prestera_port *port;
+ int err;
+
+ if (!flow_offload_has_one_action(&f->rule->action)) {
+ NL_SET_ERR_MSG(f->common.extack,
+ "Only singular actions are supported");
+ return -EOPNOTSUPP;
+ }
+
+ act = &f->rule->action.entries[0];
+
+ if (!prestera_netdev_check(act->dev)) {
+ NL_SET_ERR_MSG(f->common.extack,
+ "Only Marvell Prestera port is supported");
+ return -EINVAL;
+ }
+ if (!tc_cls_can_offload_and_chain0(act->dev, &f->common))
+ return -EOPNOTSUPP;
+ if (act->id != FLOW_ACTION_MIRRED)
+ return -EOPNOTSUPP;
+ if (protocol != htons(ETH_P_ALL))
+ return -EOPNOTSUPP;
+
+ port = netdev_priv(act->dev);
+
+ list_for_each_entry(binding, &block->binding_list, list) {
+ err = prestera_span_rule_add(binding, port);
+ if (err)
+ goto rollback;
+ }
+
+ return 0;
+
+rollback:
+ list_for_each_entry_continue_reverse(binding,
+ &block->binding_list, list)
+ prestera_span_rule_del(binding);
+ return err;
+}
+
+void prestera_span_destroy(struct prestera_flow_block *block)
+{
+ struct prestera_flow_block_binding *binding;
+
+ list_for_each_entry(binding, &block->binding_list, list)
+ prestera_span_rule_del(binding);
+}
+
+int prestera_span_init(struct prestera_switch *sw)
+{
+ struct prestera_span *span;
+
+ span = kzalloc(sizeof(*span), GFP_KERNEL);
+ if (!span)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&span->entries);
+
+ sw->span = span;
+ span->sw = sw;
+
+ return 0;
+}
+
+void prestera_span_fini(struct prestera_switch *sw)
+{
+ struct prestera_span *span = sw->span;
+
+ WARN_ON(!list_empty(&span->entries));
+ kfree(span);
+}
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
+/* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved. */
+
+#ifndef _PRESTERA_SPAN_H_
+#define _PRESTERA_SPAN_H_
+
+#include <net/pkt_cls.h>
+
+#define PRESTERA_SPAN_INVALID_ID -1
+
+struct prestera_switch;
+struct prestera_flow_block;
+
+int prestera_span_init(struct prestera_switch *sw);
+void prestera_span_fini(struct prestera_switch *sw);
+int prestera_span_replace(struct prestera_flow_block *block,
+ struct tc_cls_matchall_offload *f);
+void prestera_span_destroy(struct prestera_flow_block *block);
+
+#endif /* _PRESTERA_SPAN_H_ */
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