src/connectivity/wlan/drivers/third_party/intel/iwlwifi/mvm/debugfs.h

/******************************************************************************
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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#ifndef SRC_CONNECTIVITY_WLAN_DRIVERS_THIRD_PARTY_INTEL_IWLWIFI_MVM_DEBUGFS_H_
#define SRC_CONNECTIVITY_WLAN_DRIVERS_THIRD_PARTY_INTEL_IWLWIFI_MVM_DEBUGFS_H_

#define MVM_DEBUGFS_READ_FILE_OPS(name)                            \
    static const struct file_operations iwl_dbgfs_##name##_ops = { \
        .read = iwl_dbgfs_##name##_read,                           \
        .open = simple_open,                                       \
        .llseek = generic_file_llseek,                             \
    }

#define MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                                     \
    static ssize_t _iwl_dbgfs_##name##_write(struct file* file, const char __user* user_buf, \
                                             size_t count, loff_t* ppos) {                   \
        argtype* arg = file->private_data;                                                   \
        char buf[buflen] = {};                                                               \
        size_t buf_size = min(count, sizeof(buf) - 1);                                       \
                                                                                             \
        if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT;                         \
                                                                                             \
        return iwl_dbgfs_##name##_write(arg, buf, buf_size, ppos);                           \
    }

#define _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype)    \
    MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)               \
    static const struct file_operations iwl_dbgfs_##name##_ops = { \
        .write = _iwl_dbgfs_##name##_write,                        \
        .read = iwl_dbgfs_##name##_read,                           \
        .open = simple_open,                                       \
        .llseek = generic_file_llseek,                             \
    };

#define _MVM_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype)         \
    MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)               \
    static const struct file_operations iwl_dbgfs_##name##_ops = { \
        .write = _iwl_dbgfs_##name##_write,                        \
        .open = simple_open,                                       \
        .llseek = generic_file_llseek,                             \
    };

#endif  // SRC_CONNECTIVITY_WLAN_DRIVERS_THIRD_PARTY_INTEL_IWLWIFI_MVM_DEBUGFS_H_