129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
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/*
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* Copyright (C) 2011 Samsung Electronics.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/miscdevice.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/ip.h>
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#include <net/ip.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#include <linux/rtc.h>
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#include <linux/time.h>
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#include <linux/uaccess.h>
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#include <linux/fs.h>
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#include <linux/io.h>
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#include <linux/wait.h>
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#include <linux/time.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/mutex.h>
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#include <linux/irq.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/wakelock.h>
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#include "gnss_prj.h"
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#include "gnss_utils.h"
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static const char *hex = "0123456789abcdef";
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/* dump2hex
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* dump data to hex as fast as possible.
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* the length of @buff must be greater than "@len * 3"
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* it need 3 bytes per one data byte to print.
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*/
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static inline int dump2hex(char *buff, const char *data, size_t len)
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{
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char *dest = buff;
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int i;
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for (i = 0; i < len; i++) {
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*dest++ = hex[(data[i] >> 4) & 0xf];
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*dest++ = hex[data[i] & 0xf];
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*dest++ = ' ';
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}
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if (likely(len > 0))
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dest--; /* last space will be overwrited with null */
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*dest = '\0';
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return dest - buff;
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}
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static inline void pr_ipc_msg(int level, u8 ch, const char *prefix,
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const u8 *msg, unsigned int len)
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{
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size_t offset;
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char str[MAX_STR_LEN] = {0, };
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if (prefix)
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snprintf(str, MAX_STR_LEN, "%s", prefix);
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offset = strlen(str);
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dump2hex((str + offset), msg, (len > MAX_HEX_LEN ? MAX_HEX_LEN : len));
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gif_err("%s\n", str);
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}
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void gnss_log_ipc_pkt(struct sk_buff *skb, enum direction dir)
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{
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struct io_device *iod;
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struct link_device *ld;
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char prefix[MAX_PREFIX_LEN] = {0, };
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unsigned int hdr_len;
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unsigned int msg_len;
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u8 *msg;
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u8 *hdr;
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u8 ch;
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/*
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if (!log_info.debug_log)
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return;
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*/
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iod = skbpriv(skb)->iod;
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ld = skbpriv(skb)->ld;
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ch = skbpriv(skb)->exynos_ch;
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/**
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* Make a string of the route
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*/
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snprintf(prefix, MAX_PREFIX_LEN, "%s %s: %s: ",
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"LNK", dir_str(dir), ld->name);
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hdr = skbpriv(skb)->lnk_hdr ? skb->data : NULL;
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hdr_len = hdr ? EXYNOS_HEADER_SIZE : 0;
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if (hdr_len > 0) {
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char *separation = " | ";
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size_t offset = strlen(prefix);
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dump2hex((prefix + offset), hdr, hdr_len);
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strncat(prefix, separation, strlen(separation));
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}
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/**
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* Print an IPC message with the prefix
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*/
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msg = skb->data + hdr_len;
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msg_len = (skb->len - hdr_len);
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pr_ipc_msg(log_info.fmt_msg, ch, prefix, msg, msg_len);
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}
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