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path: root/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c73
1 files changed, 42 insertions, 31 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
index b658cf228fbe..561d0c261123 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright (C) 2018-2023 Intel Corporation
+ * Copyright (C) 2018-2024 Intel Corporation
*/
#include <linux/firmware.h>
#include "iwl-drv.h"
@@ -64,21 +64,22 @@ dbg_ver_table[IWL_DBG_TLV_TYPE_NUM] = {
[IWL_DBG_TLV_TYPE_CONF_SET] = {.min_ver = 1, .max_ver = 1,},
};
-static int iwl_dbg_tlv_add(const struct iwl_ucode_tlv *tlv,
- struct list_head *list)
+/* add a new TLV node, returning it so it can be modified */
+static struct iwl_ucode_tlv *iwl_dbg_tlv_add(const struct iwl_ucode_tlv *tlv,
+ struct list_head *list)
{
u32 len = le32_to_cpu(tlv->length);
struct iwl_dbg_tlv_node *node;
- node = kzalloc(sizeof(*node) + len, GFP_KERNEL);
+ node = kzalloc(struct_size(node, tlv.data, len), GFP_KERNEL);
if (!node)
- return -ENOMEM;
+ return NULL;
memcpy(&node->tlv, tlv, sizeof(node->tlv));
memcpy(node->tlv.data, tlv->data, len);
list_add_tail(&node->list, list);
- return 0;
+ return &node->tlv;
}
static bool iwl_dbg_tlv_ver_support(const struct iwl_ucode_tlv *tlv)
@@ -103,10 +104,18 @@ static int iwl_dbg_tlv_alloc_debug_info(struct iwl_trans *trans,
if (le32_to_cpu(tlv->length) != sizeof(*debug_info))
return -EINVAL;
+ /* we use this as a string, ensure input was NUL terminated */
+ if (strnlen(debug_info->debug_cfg_name,
+ sizeof(debug_info->debug_cfg_name)) ==
+ sizeof(debug_info->debug_cfg_name))
+ return -EINVAL;
+
IWL_DEBUG_FW(trans, "WRT: Loading debug cfg: %s\n",
debug_info->debug_cfg_name);
- return iwl_dbg_tlv_add(tlv, &trans->dbg.debug_info_tlv_list);
+ if (!iwl_dbg_tlv_add(tlv, &trans->dbg.debug_info_tlv_list))
+ return -ENOMEM;
+ return 0;
}
static int iwl_dbg_tlv_alloc_buf_alloc(struct iwl_trans *trans,
@@ -175,7 +184,9 @@ static int iwl_dbg_tlv_alloc_hcmd(struct iwl_trans *trans,
return -EINVAL;
}
- return iwl_dbg_tlv_add(tlv, &trans->dbg.time_point[tp].hcmd_list);
+ if (!iwl_dbg_tlv_add(tlv, &trans->dbg.time_point[tp].hcmd_list))
+ return -ENOMEM;
+ return 0;
}
static int iwl_dbg_tlv_alloc_region(struct iwl_trans *trans,
@@ -246,11 +257,9 @@ static int iwl_dbg_tlv_alloc_trigger(struct iwl_trans *trans,
const struct iwl_ucode_tlv *tlv)
{
const struct iwl_fw_ini_trigger_tlv *trig = (const void *)tlv->data;
- struct iwl_fw_ini_trigger_tlv *dup_trig;
u32 tp = le32_to_cpu(trig->time_point);
u32 rf = le32_to_cpu(trig->reset_fw);
- struct iwl_ucode_tlv *dup = NULL;
- int ret;
+ struct iwl_ucode_tlv *new_tlv;
if (le32_to_cpu(tlv->length) < sizeof(*trig))
return -EINVAL;
@@ -267,20 +276,18 @@ static int iwl_dbg_tlv_alloc_trigger(struct iwl_trans *trans,
"WRT: time point %u for trigger TLV with reset_fw %u\n",
tp, rf);
trans->dbg.last_tp_resetfw = 0xFF;
+
+ new_tlv = iwl_dbg_tlv_add(tlv, &trans->dbg.time_point[tp].trig_list);
+ if (!new_tlv)
+ return -ENOMEM;
+
if (!le32_to_cpu(trig->occurrences)) {
- dup = kmemdup(tlv, sizeof(*tlv) + le32_to_cpu(tlv->length),
- GFP_KERNEL);
- if (!dup)
- return -ENOMEM;
- dup_trig = (void *)dup->data;
- dup_trig->occurrences = cpu_to_le32(-1);
- tlv = dup;
- }
+ struct iwl_fw_ini_trigger_tlv *new_trig = (void *)new_tlv->data;
- ret = iwl_dbg_tlv_add(tlv, &trans->dbg.time_point[tp].trig_list);
- kfree(dup);
+ new_trig->occurrences = cpu_to_le32(-1);
+ }
- return ret;
+ return 0;
}
static int iwl_dbg_tlv_config_set(struct iwl_trans *trans,
@@ -304,7 +311,9 @@ static int iwl_dbg_tlv_config_set(struct iwl_trans *trans,
return -EINVAL;
}
- return iwl_dbg_tlv_add(tlv, &trans->dbg.time_point[tp].config_list);
+ if (!iwl_dbg_tlv_add(tlv, &trans->dbg.time_point[tp].config_list))
+ return -ENOMEM;
+ return 0;
}
static int (*dbg_tlv_alloc[])(struct iwl_trans *trans,
@@ -1096,7 +1105,7 @@ static int iwl_dbg_tlv_override_trig_node(struct iwl_fw_runtime *fwrt,
node_trig = (void *)node_tlv->data;
}
- memcpy(node_trig->data + offset, trig->data, trig_data_len);
+ memcpy((u8 *)node_trig->data + offset, trig->data, trig_data_len);
node_tlv->length = cpu_to_le32(size);
if (policy & IWL_FW_INI_APPLY_POLICY_OVERRIDE_CFG) {
@@ -1148,7 +1157,9 @@ iwl_dbg_tlv_add_active_trigger(struct iwl_fw_runtime *fwrt,
if (!match) {
IWL_DEBUG_FW(fwrt, "WRT: Enabling trigger (time point %u)\n",
le32_to_cpu(trig->time_point));
- return iwl_dbg_tlv_add(trig_tlv, trig_list);
+ if (!iwl_dbg_tlv_add(trig_tlv, trig_list))
+ return -ENOMEM;
+ return 0;
}
return iwl_dbg_tlv_override_trig_node(fwrt, trig_tlv, match);
@@ -1234,7 +1245,7 @@ iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, bool sync,
}
}
- fwrt->trans->dbg.restart_required = FALSE;
+ fwrt->trans->dbg.restart_required = false;
IWL_DEBUG_FW(fwrt, "WRT: tp %d, reset_fw %d\n",
tp, dump_data.trig->reset_fw);
IWL_DEBUG_FW(fwrt,
@@ -1244,22 +1255,22 @@ iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, bool sync,
if (fwrt->trans->trans_cfg->device_family ==
IWL_DEVICE_FAMILY_9000) {
- fwrt->trans->dbg.restart_required = TRUE;
+ fwrt->trans->dbg.restart_required = true;
} else if (tp == IWL_FW_INI_TIME_POINT_FW_ASSERT &&
fwrt->trans->dbg.last_tp_resetfw ==
IWL_FW_INI_RESET_FW_MODE_STOP_FW_ONLY) {
- fwrt->trans->dbg.restart_required = FALSE;
+ fwrt->trans->dbg.restart_required = false;
fwrt->trans->dbg.last_tp_resetfw = 0xFF;
IWL_DEBUG_FW(fwrt, "WRT: FW_ASSERT due to reset_fw_mode-no restart\n");
} else if (le32_to_cpu(dump_data.trig->reset_fw) ==
IWL_FW_INI_RESET_FW_MODE_STOP_AND_RELOAD_FW) {
IWL_DEBUG_FW(fwrt, "WRT: stop and reload firmware\n");
- fwrt->trans->dbg.restart_required = TRUE;
+ fwrt->trans->dbg.restart_required = true;
} else if (le32_to_cpu(dump_data.trig->reset_fw) ==
IWL_FW_INI_RESET_FW_MODE_STOP_FW_ONLY) {
IWL_DEBUG_FW(fwrt,
"WRT: stop only and no reload firmware\n");
- fwrt->trans->dbg.restart_required = FALSE;
+ fwrt->trans->dbg.restart_required = false;
fwrt->trans->dbg.last_tp_resetfw =
le32_to_cpu(dump_data.trig->reset_fw);
} else if (le32_to_cpu(dump_data.trig->reset_fw) ==
@@ -1274,7 +1285,7 @@ iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, bool sync,
return 0;
}
-static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt)
+void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt)
{
enum iwl_fw_ini_buffer_location *ini_dest = &fwrt->trans->dbg.ini_dest;
int ret, i;
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