From: Ido Schimmel <idosch@mellanox.com>
Date: Thu, 20 Feb 2020 09:07:48 +0200
Subject: mlxsw: spectrum_span: Do no expose mirroring agents to entire driver
Patch-mainline: v5.7-rc1
Git-commit: 9a9f8d1e749a5c4df167bc964277c75b952e32b5
References: bsc#1176774
The struct holding the different mirroring agents is currently allocated
as part of the main driver struct. This is unlike other driver modules.
Allocate the memory required to store the different mirroring agents as
part of the initialization of the mirroring module.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 6 -
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c | 72 ++++++++++++--------
2 files changed, 46 insertions(+), 32 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -168,12 +168,8 @@ struct mlxsw_sp {
struct notifier_block netdevice_nb;
struct mlxsw_sp_ptp_clock *clock;
struct mlxsw_sp_ptp_state *ptp_state;
-
struct mlxsw_sp_counter_pool *counter_pool;
- struct {
- struct mlxsw_sp_span_entry *entries;
- int entries_count;
- } span;
+ struct mlxsw_sp_span *span;
const struct mlxsw_fw_rev *req_rev;
const char *fw_filename;
const struct mlxsw_sp_kvdl_ops *kvdl_ops;
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
@@ -14,14 +14,19 @@
#include "spectrum_span.h"
#include "spectrum_switchdev.h"
+struct mlxsw_sp_span {
+ struct mlxsw_sp_span_entry *entries;
+ int entries_count;
+};
+
static u64 mlxsw_sp_span_occ_get(void *priv)
{
const struct mlxsw_sp *mlxsw_sp = priv;
u64 occ = 0;
int i;
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- if (mlxsw_sp->span.entries[i].ref_count)
+ for (i = 0; i < mlxsw_sp->span->entries_count; i++) {
+ if (mlxsw_sp->span->entries[i].ref_count)
occ++;
}
@@ -31,21 +36,29 @@ static u64 mlxsw_sp_span_occ_get(void *p
int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
- int i;
+ struct mlxsw_sp_span *span;
+ int i, err;
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)
+ span = kzalloc(sizeof(*span), GFP_KERNEL);
+ if (!span)
return -ENOMEM;
+ mlxsw_sp->span = span;
+
+ 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) {
+ err = -ENOMEM;
+ goto err_alloc_span_entries;
+ }
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
+ for (i = 0; i < mlxsw_sp->span->entries_count; i++) {
+ struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span->entries[i];
INIT_LIST_HEAD(&curr->bound_ports_list);
curr->id = i;
@@ -55,6 +68,10 @@ int mlxsw_sp_span_init(struct mlxsw_sp *
mlxsw_sp_span_occ_get, mlxsw_sp);
return 0;
+
+err_alloc_span_entries:
+ kfree(span);
+ return err;
}
void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
@@ -64,12 +81,13 @@ void mlxsw_sp_span_fini(struct mlxsw_sp
devlink_resource_occ_get_unregister(devlink, MLXSW_SP_RESOURCE_SPAN);
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[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);
+ kfree(mlxsw_sp->span->entries);
+ kfree(mlxsw_sp->span);
}
static int
@@ -645,9 +663,9 @@ mlxsw_sp_span_entry_create(struct mlxsw_
int i;
/* find a free entry to use */
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- if (!mlxsw_sp->span.entries[i].ref_count) {
- span_entry = &mlxsw_sp->span.entries[i];
+ for (i = 0; i < mlxsw_sp->span->entries_count; i++) {
+ if (!mlxsw_sp->span->entries[i].ref_count) {
+ span_entry = &mlxsw_sp->span->entries[i];
break;
}
}
@@ -673,8 +691,8 @@ mlxsw_sp_span_entry_find_by_port(struct
{
int i;
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[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->to_dev == to_dev)
return curr;
@@ -694,8 +712,8 @@ mlxsw_sp_span_entry_find_by_id(struct ml
{
int i;
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[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->id == span_id)
return curr;
@@ -736,8 +754,8 @@ static bool mlxsw_sp_span_is_egress_mirr
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];
+ 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 &&
@@ -842,9 +860,9 @@ mlxsw_sp_span_inspected_port_add(struct
* so if a binding is requested, check for conflicts.
*/
if (bind)
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
+ for (i = 0; i < mlxsw_sp->span->entries_count; i++) {
struct mlxsw_sp_span_entry *curr =
- &mlxsw_sp->span.entries[i];
+ &mlxsw_sp->span->entries[i];
if (mlxsw_sp_span_entry_bound_port_find(curr, type,
port, bind))
@@ -994,8 +1012,8 @@ void mlxsw_sp_span_respin(struct mlxsw_s
int err;
ASSERT_RTNL();
- for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
- struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
+ for (i = 0; i < mlxsw_sp->span->entries_count; i++) {
+ struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span->entries[i];
struct mlxsw_sp_span_parms sparms = {NULL};
if (!curr->ref_count)