cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/ath/ath9k/common-debug.c

/*
 * Copyright (c) 2008-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "common.h"


static ssize_t read_file_modal_eeprom(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_hw *ah = file->private_data; u32 len = 0, size = 6000; char *buf; size_t retval; buf = kzalloc(size, GFP_KERNEL); if (buf == NULL) return -ENOMEM; len = ah->eep_ops->dump_eeprom(ah, false, buf, len, size); retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return retval; }

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static const struct file_operations fops_modal_eeprom = { .read = read_file_modal_eeprom, .open = simple_open, .owner = THIS_MODULE, .llseek = default_llseek, };
void ath9k_cmn_debug_modal_eeprom(struct dentry *debugfs_phy, struct ath_hw *ah) { debugfs_create_file("modal_eeprom", S_IRUSR, debugfs_phy, ah, &fops_modal_eeprom); }

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EXPORT_SYMBOL(ath9k_cmn_debug_modal_eeprom);
static ssize_t read_file_base_eeprom(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_hw *ah = file->private_data; u32 len = 0, size = 1500; ssize_t retval = 0; char *buf; buf = kzalloc(size, GFP_KERNEL); if (!buf) return -ENOMEM; len = ah->eep_ops->dump_eeprom(ah, true, buf, len, size); retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return retval; }

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static const struct file_operations fops_base_eeprom = { .read = read_file_base_eeprom, .open = simple_open, .owner = THIS_MODULE, .llseek = default_llseek, };
void ath9k_cmn_debug_base_eeprom(struct dentry *debugfs_phy, struct ath_hw *ah) { debugfs_create_file("base_eeprom", S_IRUSR, debugfs_phy, ah, &fops_base_eeprom); }

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EXPORT_SYMBOL(ath9k_cmn_debug_base_eeprom);
void ath9k_cmn_debug_stat_rx(struct ath_rx_stats *rxstats, struct ath_rx_status *rs) { #define RX_PHY_ERR_INC(c) rxstats->phy_err_stats[c]++ #define RX_CMN_STAT_INC(c) (rxstats->c++) RX_CMN_STAT_INC(rx_pkts_all); rxstats->rx_bytes_all += rs->rs_datalen; if (rs->rs_status & ATH9K_RXERR_CRC) RX_CMN_STAT_INC(crc_err); if (rs->rs_status & ATH9K_RXERR_DECRYPT) RX_CMN_STAT_INC(decrypt_crc_err); if (rs->rs_status & ATH9K_RXERR_MIC) RX_CMN_STAT_INC(mic_err); if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE) RX_CMN_STAT_INC(pre_delim_crc_err); if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST) RX_CMN_STAT_INC(post_delim_crc_err); if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY) RX_CMN_STAT_INC(decrypt_busy_err); if (rs->rs_status & ATH9K_RXERR_PHY) { RX_CMN_STAT_INC(phy_err); if (rs->rs_phyerr < ATH9K_PHYERR_MAX) RX_PHY_ERR_INC(rs->rs_phyerr); } #undef RX_CMN_STAT_INC #undef RX_PHY_ERR_INC }

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EXPORT_SYMBOL(ath9k_cmn_debug_stat_rx);
static ssize_t read_file_recv(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { #define RXS_ERR(s, e) \ do { \ len += scnprintf(buf + len, size - len, \ "%18s : %10u\n", s, \ rxstats->e); \ } while (0) struct ath_rx_stats *rxstats = file->private_data; char *buf; unsigned int len = 0, size = 1600; ssize_t retval = 0; buf = kzalloc(size, GFP_KERNEL); if (buf == NULL) return -ENOMEM; RXS_ERR("PKTS-ALL", rx_pkts_all); RXS_ERR("BYTES-ALL", rx_bytes_all); RXS_ERR("BEACONS", rx_beacons); RXS_ERR("FRAGS", rx_frags); RXS_ERR("SPECTRAL", rx_spectral); RXS_ERR("CRC ERR", crc_err); RXS_ERR("DECRYPT CRC ERR", decrypt_crc_err); RXS_ERR("PHY ERR", phy_err); RXS_ERR("MIC ERR", mic_err); RXS_ERR("PRE-DELIM CRC ERR", pre_delim_crc_err); RXS_ERR("POST-DELIM CRC ERR", post_delim_crc_err); RXS_ERR("DECRYPT BUSY ERR", decrypt_busy_err); RXS_ERR("LENGTH-ERR", rx_len_err); RXS_ERR("OOM-ERR", rx_oom_err); RXS_ERR("RATE-ERR", rx_rate_err); RXS_ERR("TOO-MANY-FRAGS", rx_too_many_frags_err); if (len > size) len = size; retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return retval; #undef RXS_ERR }

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static const struct file_operations fops_recv = { .read = read_file_recv, .open = simple_open, .owner = THIS_MODULE, .llseek = default_llseek, };
void ath9k_cmn_debug_recv(struct dentry *debugfs_phy, struct ath_rx_stats *rxstats) { debugfs_create_file("recv", S_IRUSR, debugfs_phy, rxstats, &fops_recv); }

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EXPORT_SYMBOL(ath9k_cmn_debug_recv);
static ssize_t read_file_phy_err(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { #define PHY_ERR(s, p) \ len += scnprintf(buf + len, size - len, "%22s : %10u\n", s, \ rxstats->phy_err_stats[p]); struct ath_rx_stats *rxstats = file->private_data; char *buf; unsigned int len = 0, size = 1600; ssize_t retval = 0; buf = kzalloc(size, GFP_KERNEL); if (buf == NULL) return -ENOMEM; PHY_ERR("UNDERRUN ERR", ATH9K_PHYERR_UNDERRUN); PHY_ERR("TIMING ERR", ATH9K_PHYERR_TIMING); PHY_ERR("PARITY ERR", ATH9K_PHYERR_PARITY); PHY_ERR("RATE ERR", ATH9K_PHYERR_RATE); PHY_ERR("LENGTH ERR", ATH9K_PHYERR_LENGTH); PHY_ERR("RADAR ERR", ATH9K_PHYERR_RADAR); PHY_ERR("SERVICE ERR", ATH9K_PHYERR_SERVICE); PHY_ERR("TOR ERR", ATH9K_PHYERR_TOR); PHY_ERR("OFDM-TIMING ERR", ATH9K_PHYERR_OFDM_TIMING); PHY_ERR("OFDM-SIGNAL-PARITY ERR", ATH9K_PHYERR_OFDM_SIGNAL_PARITY); PHY_ERR("OFDM-RATE ERR", ATH9K_PHYERR_OFDM_RATE_ILLEGAL); PHY_ERR("OFDM-LENGTH ERR", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL); PHY_ERR("OFDM-POWER-DROP ERR", ATH9K_PHYERR_OFDM_POWER_DROP); PHY_ERR("OFDM-SERVICE ERR", ATH9K_PHYERR_OFDM_SERVICE); PHY_ERR("OFDM-RESTART ERR", ATH9K_PHYERR_OFDM_RESTART); PHY_ERR("CCK-BLOCKER ERR", ATH9K_PHYERR_CCK_BLOCKER); PHY_ERR("CCK-TIMING ERR", ATH9K_PHYERR_CCK_TIMING); PHY_ERR("CCK-HEADER-CRC ERR", ATH9K_PHYERR_CCK_HEADER_CRC); PHY_ERR("CCK-RATE ERR", ATH9K_PHYERR_CCK_RATE_ILLEGAL); PHY_ERR("CCK-LENGTH ERR", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL); PHY_ERR("CCK-POWER-DROP ERR", ATH9K_PHYERR_CCK_POWER_DROP); PHY_ERR("CCK-SERVICE ERR", ATH9K_PHYERR_CCK_SERVICE); PHY_ERR("CCK-RESTART ERR", ATH9K_PHYERR_CCK_RESTART); PHY_ERR("HT-CRC ERR", ATH9K_PHYERR_HT_CRC_ERROR); PHY_ERR("HT-LENGTH ERR", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); PHY_ERR("HT-RATE ERR", ATH9K_PHYERR_HT_RATE_ILLEGAL); PHY_ERR("HT-ZLF ERR", ATH9K_PHYERR_HT_ZLF); PHY_ERR("FALSE-RADAR-EXT ERR", ATH9K_PHYERR_FALSE_RADAR_EXT); PHY_ERR("GREEN-FIELD ERR", ATH9K_PHYERR_GREEN_FIELD); PHY_ERR("SPECTRAL ERR", ATH9K_PHYERR_SPECTRAL); if (len > size) len = size; retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return retval; #undef PHY_ERR }

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static const struct file_operations fops_phy_err = { .read = read_file_phy_err, .open = simple_open, .owner = THIS_MODULE, .llseek = default_llseek, };
void ath9k_cmn_debug_phy_err(struct dentry *debugfs_phy, struct ath_rx_stats *rxstats) { debugfs_create_file("phy_err", S_IRUSR, debugfs_phy, rxstats, &fops_phy_err); }

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EXPORT_SYMBOL(ath9k_cmn_debug_phy_err);

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