hisax_debug.h

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/*
 * Common debugging macros for use with the hisax driver
 *
 * Author       Frode Isaksen
 * Copyright    2001 by Frode Isaksen      <[email protected]>
 *              2001 by Kai Germaschewski  <[email protected]>
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 * How to use:
 *
 * Before including this file, you need to
 *   #define __debug_variable my_debug
 * where my_debug is a variable in your code which
 * determines the debug bitmask.
 *
 * If CONFIG_HISAX_DEBUG is not set, all macros evaluate to nothing
 *
 */

#ifndef __HISAX_DEBUG_H__
#define __HISAX_DEBUG_H__


#ifdef CONFIG_HISAX_DEBUG

#define DBG(level, format, arg...) do {                 \
        if (level & __debug_variable)               \
            printk(KERN_DEBUG "%s: " format "\n" , __func__ , ## arg); \
    } while (0)

#define DBG_PACKET(level, data, count)                  \
    if (level & __debug_variable) dump_packet(__func__, data, count)

#define DBG_SKB(level, skb)                     \
    if ((level & __debug_variable) && skb) dump_packet(__func__, skb->data, skb->len)


static void __attribute__((unused))
dump_packet(const char *name, const u_char *data, int pkt_len)
{
#define DUMP_HDR_SIZE 20
#define DUMP_TLR_SIZE 8
    if (pkt_len) {
        int i, len1, len2;

        printk(KERN_DEBUG "%s: length=%d,data=", name, pkt_len);

        if (pkt_len > DUMP_HDR_SIZE + DUMP_TLR_SIZE) {
            len1 = DUMP_HDR_SIZE;
            len2 = DUMP_TLR_SIZE;
        } else {
            len1 = pkt_len > DUMP_HDR_SIZE ? DUMP_HDR_SIZE : pkt_len;
            len2 = 0;
        }
        for (i = 0; i < len1; ++i) {
            printk("%.2x", data[i]);
        }
        if (len2) {
            printk("..");
            for (i = pkt_len-DUMP_TLR_SIZE; i < pkt_len; ++i) {
                printk("%.2x", data[i]);
            }
        }
        printk("\n");
    }
#undef DUMP_HDR_SIZE
#undef DUMP_TLR_SIZE
}

#else

#define DBG(level, format, arg...) do {} while (0)
#define DBG_PACKET(level, data, count) do {} while (0)
#define DBG_SKB(level, skb) do {} while (0)

#endif

#endif