e9dd255507
Add a per-link debugfs entry in iwlmvm level so we can read/write link related parameters. Do it by implementing the link_add_debugfs API introduced by mac80211. Each entry will have a path like this: .../netdev:wlan0/link-X/iwlmvm/<file_name> for each link X. For non-MLD vifs this callback is called when the original vif debugfs dir is also created, so handle that case by not creating the 'iwlmvm' directory again. Note that we don't have to worry about the cleaning the iwlmvm/* directory as it is already done by mac80211 when removing the link (or netdev). Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20231004123422.6a161f021ae8.Ic8f40f2b4682270c94036e3c11c3996ae34266fa@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2023 Intel Corporation
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* Copyright (C) 2012-2014 Intel Corporation
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* Copyright (C) 2013-2014 Intel Mobile Communications GmbH
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*/
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#define MVM_DEBUGFS_READ_FILE_OPS(name) \
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static const struct file_operations iwl_dbgfs_##name##_ops = { \
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.read = iwl_dbgfs_##name##_read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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}
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#define MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
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static ssize_t _iwl_dbgfs_##name##_write(struct file *file, \
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const char __user *user_buf, \
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size_t count, loff_t *ppos) \
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{ \
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argtype *arg = file->private_data; \
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char buf[buflen] = {}; \
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size_t buf_size = min(count, sizeof(buf) - 1); \
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\
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if (copy_from_user(buf, user_buf, buf_size)) \
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return -EFAULT; \
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\
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return iwl_dbgfs_##name##_write(arg, buf, buf_size, ppos); \
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} \
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#define _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype) \
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MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
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static const struct file_operations iwl_dbgfs_##name##_ops = { \
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.write = _iwl_dbgfs_##name##_write, \
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.read = iwl_dbgfs_##name##_read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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};
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#define _MVM_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype) \
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MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
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static const struct file_operations iwl_dbgfs_##name##_ops = { \
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.write = _iwl_dbgfs_##name##_write, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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};
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