spectrum_cnt.o spectrum_fid.o \
spectrum_ipip.o spectrum_acl_flex_actions.o \
spectrum_mr.o spectrum_mr_tcam.o \
- spectrum_qdisc.o
+ spectrum_qdisc.o spectrum_span.o
mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB) += spectrum_dcb.o
mlxsw_spectrum-$(CONFIG_NET_DEVLINK) += spectrum_dpipe.o
obj-$(CONFIG_MLXSW_MINIMAL) += mlxsw_minimal.o
#include "spectrum_cnt.h"
#include "spectrum_dpipe.h"
#include "spectrum_acl_flex_actions.h"
+#include "spectrum_span.h"
#include "../mlxfw/mlxfw.h"
#define MLXSW_FWREV_MAJOR 13
return 0;
}
-static int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
-{
- int i;
-
- if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_SPAN))
- return -EIO;
-
- mlxsw_sp->span.entries_count = MLXSW_CORE_RES_GET(mlxsw_sp->core,
- MAX_SPAN);
- mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
- sizeof(struct mlxsw_sp_span_entry),
- GFP_KERNEL);
- if (!mlxsw_sp->span.entries)
- return -ENOMEM;
-
- for (i = 0; i < mlxsw_sp->span.entries_count; i++)
- INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);
-
- return 0;
-}
-
-static void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
-{
- int i;
-
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
-
- WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
- }
- kfree(mlxsw_sp->span.entries);
-}
-
-static struct mlxsw_sp_span_entry *
-mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
-{
- struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
- struct mlxsw_sp_span_entry *span_entry;
- char mpat_pl[MLXSW_REG_MPAT_LEN];
- u8 local_port = port->local_port;
- int index;
- int i;
- int err;
-
- /* find a free entry to use */
- index = -1;
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- if (!mlxsw_sp->span.entries[i].ref_count) {
- index = i;
- span_entry = &mlxsw_sp->span.entries[i];
- break;
- }
- }
- if (index < 0)
- return NULL;
-
- /* create a new port analayzer entry for local_port */
- mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
- err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
- if (err)
- return NULL;
-
- span_entry->id = index;
- span_entry->ref_count = 1;
- span_entry->local_port = local_port;
- return span_entry;
-}
-
-static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
- struct mlxsw_sp_span_entry *span_entry)
-{
- u8 local_port = span_entry->local_port;
- char mpat_pl[MLXSW_REG_MPAT_LEN];
- int pa_id = span_entry->id;
-
- mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
- mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
-}
-
-struct mlxsw_sp_span_entry *
-mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port)
-{
- int i;
-
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
-
- if (curr->ref_count && curr->local_port == local_port)
- return curr;
- }
- return NULL;
-}
-
-static struct mlxsw_sp_span_entry *
-mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
-{
- struct mlxsw_sp_span_entry *span_entry;
-
- span_entry = mlxsw_sp_span_entry_find(port->mlxsw_sp,
- port->local_port);
- if (span_entry) {
- /* Already exists, just take a reference */
- span_entry->ref_count++;
- return span_entry;
- }
-
- return mlxsw_sp_span_entry_create(port);
-}
-
-static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
- struct mlxsw_sp_span_entry *span_entry)
-{
- WARN_ON(!span_entry->ref_count);
- if (--span_entry->ref_count == 0)
- mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
- return 0;
-}
-
-static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
-{
- struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
- struct mlxsw_sp_span_inspected_port *p;
- int i;
-
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
-
- list_for_each_entry(p, &curr->bound_ports_list, list)
- if (p->local_port == port->local_port &&
- p->type == MLXSW_SP_SPAN_EGRESS)
- return true;
- }
-
- return false;
-}
-
-static int mlxsw_sp_span_mtu_to_buffsize(const struct mlxsw_sp *mlxsw_sp,
- int mtu)
-{
- return mlxsw_sp_bytes_cells(mlxsw_sp, mtu * 5 / 2) + 1;
-}
-
-static int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
-{
- struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
- char sbib_pl[MLXSW_REG_SBIB_LEN];
- int err;
-
- /* If port is egress mirrored, the shared buffer size should be
- * updated according to the mtu value
- */
- if (mlxsw_sp_span_is_egress_mirror(port)) {
- u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp, mtu);
-
- mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
- err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
- if (err) {
- netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
- return err;
- }
- }
-
- return 0;
-}
-
-static struct mlxsw_sp_span_inspected_port *
-mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
- struct mlxsw_sp_span_entry *span_entry)
-{
- struct mlxsw_sp_span_inspected_port *p;
-
- list_for_each_entry(p, &span_entry->bound_ports_list, list)
- if (port->local_port == p->local_port)
- return p;
- return NULL;
-}
-
-static int
-mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
- struct mlxsw_sp_span_entry *span_entry,
- enum mlxsw_sp_span_type type,
- bool bind)
-{
- struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
- char mpar_pl[MLXSW_REG_MPAR_LEN];
- int pa_id = span_entry->id;
-
- /* bind the port to the SPAN entry */
- mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
- (enum mlxsw_reg_mpar_i_e) type, bind, pa_id);
- return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
-}
-
-static int
-mlxsw_sp_span_inspected_port_add(struct mlxsw_sp_port *port,
- struct mlxsw_sp_span_entry *span_entry,
- enum mlxsw_sp_span_type type,
- bool bind)
-{
- struct mlxsw_sp_span_inspected_port *inspected_port;
- struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
- char sbib_pl[MLXSW_REG_SBIB_LEN];
- int err;
-
- /* if it is an egress SPAN, bind a shared buffer to it */
- if (type == MLXSW_SP_SPAN_EGRESS) {
- u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp,
- port->dev->mtu);
-
- mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
- err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
- if (err) {
- netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
- return err;
- }
- }
-
- if (bind) {
- err = mlxsw_sp_span_inspected_port_bind(port, span_entry, type,
- true);
- if (err)
- goto err_port_bind;
- }
-
- inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
- if (!inspected_port) {
- err = -ENOMEM;
- goto err_inspected_port_alloc;
- }
- inspected_port->local_port = port->local_port;
- inspected_port->type = type;
- list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);
-
- return 0;
-
-err_inspected_port_alloc:
- if (bind)
- mlxsw_sp_span_inspected_port_bind(port, span_entry, type,
- false);
-err_port_bind:
- if (type == MLXSW_SP_SPAN_EGRESS) {
- mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
- mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
- }
- return err;
-}
-
-static void
-mlxsw_sp_span_inspected_port_del(struct mlxsw_sp_port *port,
- struct mlxsw_sp_span_entry *span_entry,
- enum mlxsw_sp_span_type type,
- bool bind)
-{
- struct mlxsw_sp_span_inspected_port *inspected_port;
- struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
- char sbib_pl[MLXSW_REG_SBIB_LEN];
-
- inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
- if (!inspected_port)
- return;
-
- if (bind)
- mlxsw_sp_span_inspected_port_bind(port, span_entry, type,
- false);
- /* remove the SBIB buffer if it was egress SPAN */
- if (type == MLXSW_SP_SPAN_EGRESS) {
- mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
- mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
- }
-
- mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
-
- list_del(&inspected_port->list);
- kfree(inspected_port);
-}
-
-int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
- struct mlxsw_sp_port *to,
- enum mlxsw_sp_span_type type, bool bind)
-{
- struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
- struct mlxsw_sp_span_entry *span_entry;
- int err;
-
- span_entry = mlxsw_sp_span_entry_get(to);
- if (!span_entry)
- return -ENOENT;
-
- netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
- span_entry->id);
-
- err = mlxsw_sp_span_inspected_port_add(from, span_entry, type, bind);
- if (err)
- goto err_port_bind;
-
- return 0;
-
-err_port_bind:
- mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
- return err;
-}
-
-void mlxsw_sp_span_mirror_del(struct mlxsw_sp_port *from, u8 destination_port,
- enum mlxsw_sp_span_type type, bool bind)
-{
- struct mlxsw_sp_span_entry *span_entry;
-
- span_entry = mlxsw_sp_span_entry_find(from->mlxsw_sp,
- destination_port);
- if (!span_entry) {
- netdev_err(from->dev, "no span entry found\n");
- return;
- }
-
- netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
- span_entry->id);
- mlxsw_sp_span_inspected_port_del(from, span_entry, type, bind);
-}
-
static int mlxsw_sp_port_sample_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool enable, u32 rate)
{
struct mlxsw_sp_port;
struct mlxsw_sp_rif;
+struct mlxsw_sp_span_entry;
struct mlxsw_sp_upper {
struct net_device *dev;
unsigned long *ports_in_mid; /* bits array */
};
-enum mlxsw_sp_span_type {
- MLXSW_SP_SPAN_EGRESS,
- MLXSW_SP_SPAN_INGRESS
-};
-
-struct mlxsw_sp_span_inspected_port {
- struct list_head list;
- enum mlxsw_sp_span_type type;
- u8 local_port;
-};
-
-struct mlxsw_sp_span_entry {
- u8 local_port;
- struct list_head bound_ports_list;
- int ref_count;
- int id;
-};
-
enum mlxsw_sp_port_mall_action_type {
MLXSW_SP_PORT_MALL_MIRROR,
MLXSW_SP_PORT_MALL_SAMPLE,
struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev);
void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port);
struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find_rcu(struct net_device *dev);
-int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
- struct mlxsw_sp_port *to,
- enum mlxsw_sp_span_type type,
- bool bind);
-void mlxsw_sp_span_mirror_del(struct mlxsw_sp_port *from,
- u8 destination_port,
- enum mlxsw_sp_span_type type,
- bool bind);
-struct mlxsw_sp_span_entry *
-mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port);
/* spectrum_dcb.c */
#ifdef CONFIG_MLXSW_SPECTRUM_DCB
#include "spectrum_acl_flex_actions.h"
#include "core_acl_flex_actions.h"
+#include "spectrum_span.h"
#define MLXSW_SP_KVDL_ACT_EXT_SIZE 1
--- /dev/null
+/*
+ * drivers/net/ethernet/mellanox/mlxsw/mlxsw_span.c
+ * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/list.h>
+
+#include "spectrum.h"
+#include "spectrum_span.h"
+
+int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
+{
+ int i;
+
+ if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_SPAN))
+ return -EIO;
+
+ mlxsw_sp->span.entries_count = MLXSW_CORE_RES_GET(mlxsw_sp->core,
+ MAX_SPAN);
+ mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
+ sizeof(struct mlxsw_sp_span_entry),
+ GFP_KERNEL);
+ if (!mlxsw_sp->span.entries)
+ return -ENOMEM;
+
+ for (i = 0; i < mlxsw_sp->span.entries_count; i++)
+ INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);
+
+ return 0;
+}
+
+void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ int i;
+
+ for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
+ struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
+
+ WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
+ }
+ kfree(mlxsw_sp->span.entries);
+}
+
+static struct mlxsw_sp_span_entry *
+mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
+{
+ struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
+ struct mlxsw_sp_span_entry *span_entry;
+ char mpat_pl[MLXSW_REG_MPAT_LEN];
+ u8 local_port = port->local_port;
+ int index;
+ int i;
+ int err;
+
+ /* find a free entry to use */
+ index = -1;
+ for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
+ if (!mlxsw_sp->span.entries[i].ref_count) {
+ index = i;
+ span_entry = &mlxsw_sp->span.entries[i];
+ break;
+ }
+ }
+ if (index < 0)
+ return NULL;
+
+ /* create a new port analayzer entry for local_port */
+ mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
+ if (err)
+ return NULL;
+
+ span_entry->id = index;
+ span_entry->ref_count = 1;
+ span_entry->local_port = local_port;
+ return span_entry;
+}
+
+static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_span_entry *span_entry)
+{
+ u8 local_port = span_entry->local_port;
+ char mpat_pl[MLXSW_REG_MPAT_LEN];
+ int pa_id = span_entry->id;
+
+ mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
+ mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
+}
+
+struct mlxsw_sp_span_entry *
+mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port)
+{
+ int i;
+
+ for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
+ struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
+
+ if (curr->ref_count && curr->local_port == local_port)
+ return curr;
+ }
+ return NULL;
+}
+
+static struct mlxsw_sp_span_entry *
+mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
+{
+ struct mlxsw_sp_span_entry *span_entry;
+
+ span_entry = mlxsw_sp_span_entry_find(port->mlxsw_sp,
+ port->local_port);
+ if (span_entry) {
+ /* Already exists, just take a reference */
+ span_entry->ref_count++;
+ return span_entry;
+ }
+
+ return mlxsw_sp_span_entry_create(port);
+}
+
+static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_span_entry *span_entry)
+{
+ WARN_ON(!span_entry->ref_count);
+ if (--span_entry->ref_count == 0)
+ mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
+ return 0;
+}
+
+static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
+{
+ struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
+ struct mlxsw_sp_span_inspected_port *p;
+ int i;
+
+ for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
+ struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
+
+ list_for_each_entry(p, &curr->bound_ports_list, list)
+ if (p->local_port == port->local_port &&
+ p->type == MLXSW_SP_SPAN_EGRESS)
+ return true;
+ }
+
+ return false;
+}
+
+static int mlxsw_sp_span_mtu_to_buffsize(const struct mlxsw_sp *mlxsw_sp,
+ int mtu)
+{
+ return mlxsw_sp_bytes_cells(mlxsw_sp, mtu * 5 / 2) + 1;
+}
+
+int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
+{
+ struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
+ char sbib_pl[MLXSW_REG_SBIB_LEN];
+ int err;
+
+ /* If port is egress mirrored, the shared buffer size should be
+ * updated according to the mtu value
+ */
+ if (mlxsw_sp_span_is_egress_mirror(port)) {
+ u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp, mtu);
+
+ mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
+ if (err) {
+ netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static struct mlxsw_sp_span_inspected_port *
+mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
+ struct mlxsw_sp_span_entry *span_entry)
+{
+ struct mlxsw_sp_span_inspected_port *p;
+
+ list_for_each_entry(p, &span_entry->bound_ports_list, list)
+ if (port->local_port == p->local_port)
+ return p;
+ return NULL;
+}
+
+static int
+mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
+ struct mlxsw_sp_span_entry *span_entry,
+ enum mlxsw_sp_span_type type,
+ bool bind)
+{
+ struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
+ char mpar_pl[MLXSW_REG_MPAR_LEN];
+ int pa_id = span_entry->id;
+
+ /* bind the port to the SPAN entry */
+ mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
+ (enum mlxsw_reg_mpar_i_e)type, bind, pa_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
+}
+
+static int
+mlxsw_sp_span_inspected_port_add(struct mlxsw_sp_port *port,
+ struct mlxsw_sp_span_entry *span_entry,
+ enum mlxsw_sp_span_type type,
+ bool bind)
+{
+ struct mlxsw_sp_span_inspected_port *inspected_port;
+ struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
+ char sbib_pl[MLXSW_REG_SBIB_LEN];
+ int err;
+
+ /* if it is an egress SPAN, bind a shared buffer to it */
+ if (type == MLXSW_SP_SPAN_EGRESS) {
+ u32 buffsize = mlxsw_sp_span_mtu_to_buffsize(mlxsw_sp,
+ port->dev->mtu);
+
+ mlxsw_reg_sbib_pack(sbib_pl, port->local_port, buffsize);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
+ if (err) {
+ netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
+ return err;
+ }
+ }
+
+ if (bind) {
+ err = mlxsw_sp_span_inspected_port_bind(port, span_entry, type,
+ true);
+ if (err)
+ goto err_port_bind;
+ }
+
+ inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
+ if (!inspected_port) {
+ err = -ENOMEM;
+ goto err_inspected_port_alloc;
+ }
+ inspected_port->local_port = port->local_port;
+ inspected_port->type = type;
+ list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);
+
+ return 0;
+
+err_inspected_port_alloc:
+ if (bind)
+ mlxsw_sp_span_inspected_port_bind(port, span_entry, type,
+ false);
+err_port_bind:
+ if (type == MLXSW_SP_SPAN_EGRESS) {
+ mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
+ mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
+ }
+ return err;
+}
+
+static void
+mlxsw_sp_span_inspected_port_del(struct mlxsw_sp_port *port,
+ struct mlxsw_sp_span_entry *span_entry,
+ enum mlxsw_sp_span_type type,
+ bool bind)
+{
+ struct mlxsw_sp_span_inspected_port *inspected_port;
+ struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
+ char sbib_pl[MLXSW_REG_SBIB_LEN];
+
+ inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
+ if (!inspected_port)
+ return;
+
+ if (bind)
+ mlxsw_sp_span_inspected_port_bind(port, span_entry, type,
+ false);
+ /* remove the SBIB buffer if it was egress SPAN */
+ if (type == MLXSW_SP_SPAN_EGRESS) {
+ mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
+ mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
+ }
+
+ mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
+
+ list_del(&inspected_port->list);
+ kfree(inspected_port);
+}
+
+int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
+ struct mlxsw_sp_port *to,
+ enum mlxsw_sp_span_type type, bool bind)
+{
+ struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
+ struct mlxsw_sp_span_entry *span_entry;
+ int err;
+
+ span_entry = mlxsw_sp_span_entry_get(to);
+ if (!span_entry)
+ return -ENOENT;
+
+ netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
+ span_entry->id);
+
+ err = mlxsw_sp_span_inspected_port_add(from, span_entry, type, bind);
+ if (err)
+ goto err_port_bind;
+
+ return 0;
+
+err_port_bind:
+ mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
+ return err;
+}
+
+void mlxsw_sp_span_mirror_del(struct mlxsw_sp_port *from, u8 destination_port,
+ enum mlxsw_sp_span_type type, bool bind)
+{
+ struct mlxsw_sp_span_entry *span_entry;
+
+ span_entry = mlxsw_sp_span_entry_find(from->mlxsw_sp,
+ destination_port);
+ if (!span_entry) {
+ netdev_err(from->dev, "no span entry found\n");
+ return;
+ }
+
+ netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
+ span_entry->id);
+ mlxsw_sp_span_inspected_port_del(from, span_entry, type, bind);
+}
--- /dev/null
+/*
+ * drivers/net/ethernet/mellanox/mlxsw/mlxsw_span.h
+ * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _MLXSW_SPECTRUM_SPAN_H
+#define _MLXSW_SPECTRUM_SPAN_H
+
+#include <linux/types.h>
+
+struct mlxsw_sp;
+struct mlxsw_sp_port;
+
+enum mlxsw_sp_span_type {
+ MLXSW_SP_SPAN_EGRESS,
+ MLXSW_SP_SPAN_INGRESS
+};
+
+struct mlxsw_sp_span_inspected_port {
+ struct list_head list;
+ enum mlxsw_sp_span_type type;
+ u8 local_port;
+};
+
+struct mlxsw_sp_span_entry {
+ u8 local_port;
+ struct list_head bound_ports_list;
+ int ref_count;
+ int id;
+};
+
+int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp);
+void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp);
+
+int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
+ struct mlxsw_sp_port *to,
+ enum mlxsw_sp_span_type type, bool bind);
+void mlxsw_sp_span_mirror_del(struct mlxsw_sp_port *from, u8 destination_port,
+ enum mlxsw_sp_span_type type, bool bind);
+struct mlxsw_sp_span_entry *
+mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port);
+
+int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu);
+
+#endif
projects / platform / kernel / linux-starfive.git / commitdiff