iwlwifi: fw dump: add infrastructure for dump scrubbing

In firmware dumps, currently all kinds of key material may be
included, e.g. in host commands (if firmware crashes during the
processing of a key-related command) or in the TX FIFO(s) if
we have been using in-TX-command key material.

Additionally, some firmware versions will advertise sections
of their internal data to not dump, due to them containing some
sensitive data.

Add some infrastructure to allow scrubbing this data out, as
dependent on the opmode's idea of what will need to be done.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Luca Coelho <[email protected]>
Link: https://lore.kernel.org/r/iwlwifi.20211017123741.360cc8fe55b1.Ie3bd3ece38043969f7e116e61a6ec1197a58d78b@changeid
Signed-off-by: Luca Coelho <[email protected]>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/init.c b/drivers/net/wireless/intel/iwlwifi/fw/init.c
index 2ecec00db9da..566957ac4539 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/init.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/init.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
  * Copyright (C) 2017 Intel Deutschland GmbH
- * Copyright (C) 2019-2020 Intel Corporation
+ * Copyright (C) 2019-2021 Intel Corporation
  */
 #include "iwl-drv.h"
 #include "runtime.h"
@@ -16,6 +16,8 @@
 void iwl_fw_runtime_init(struct iwl_fw_runtime *fwrt, struct iwl_trans *trans,
 			const struct iwl_fw *fw,
 			const struct iwl_fw_runtime_ops *ops, void *ops_ctx,
+			const struct iwl_dump_sanitize_ops *sanitize_ops,
+			void *sanitize_ctx,
 			struct dentry *dbgfs_dir)
 {
 	int i;
@@ -26,6 +28,8 @@ void iwl_fw_runtime_init(struct iwl_fw_runtime *fwrt, struct iwl_trans *trans,
 	fwrt->dev = trans->dev;
 	fwrt->dump.conf = FW_DBG_INVALID;
 	fwrt->ops = ops;
+	fwrt->sanitize_ops = sanitize_ops;
+	fwrt->sanitize_ctx = sanitize_ctx;
 	fwrt->ops_ctx = ops_ctx;
 	for (i = 0; i < IWL_FW_RUNTIME_DUMP_WK_NUM; i++) {
 		fwrt->dump.wks[i].idx = i;