1 /*
2 * Common debugging macros for use with the hisax driver
3 *
4 * Author Frode Isaksen
5 * Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
6 * 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
7 *
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
10 *
11 * How to use:
12 *
13 * Before including this file, you need to
14 * #define __debug_variable my_debug
15 * where my_debug is a variable in your code which
16 * determines the debug bitmask.
17 *
18 * If CONFIG_HISAX_DEBUG is not set, all macros evaluate to nothing
19 *
20 */
21
22 #ifndef __HISAX_DEBUG_H__
23 #define __HISAX_DEBUG_H__
24
25
26 #ifdef CONFIG_HISAX_DEBUG
27
28 #define DBG(level, format, arg...) do { \
29 if (level & __debug_variable) \
30 printk(KERN_DEBUG "%s: " format "\n" , __func__ , ## arg); \
31 } while (0)
32
33 #define DBG_PACKET(level, data, count) \
34 if (level & __debug_variable) dump_packet(__func__, data, count)
35
36 #define DBG_SKB(level, skb) \
37 if ((level & __debug_variable) && skb) dump_packet(__func__, skb->data, skb->len)
38
39
40 static void __attribute__((unused))
dump_packet(const char * name,const u_char * data,int pkt_len)41 dump_packet(const char *name, const u_char *data, int pkt_len)
42 {
43 #define DUMP_HDR_SIZE 20
44 #define DUMP_TLR_SIZE 8
45 if (pkt_len) {
46 int i, len1, len2;
47
48 printk(KERN_DEBUG "%s: length=%d,data=", name, pkt_len);
49
50 if (pkt_len > DUMP_HDR_SIZE + DUMP_TLR_SIZE) {
51 len1 = DUMP_HDR_SIZE;
52 len2 = DUMP_TLR_SIZE;
53 } else {
54 len1 = pkt_len > DUMP_HDR_SIZE ? DUMP_HDR_SIZE : pkt_len;
55 len2 = 0;
56 }
57 for (i = 0; i < len1; ++i) {
58 printk("%.2x", data[i]);
59 }
60 if (len2) {
61 printk("..");
62 for (i = pkt_len-DUMP_TLR_SIZE; i < pkt_len; ++i) {
63 printk("%.2x", data[i]);
64 }
65 }
66 printk("\n");
67 }
68 #undef DUMP_HDR_SIZE
69 #undef DUMP_TLR_SIZE
70 }
71
72 #else
73
74 #define DBG(level, format, arg...) do {} while (0)
75 #define DBG_PACKET(level, data, count) do {} while (0)
76 #define DBG_SKB(level, skb) do {} while (0)
77
78 #endif
79
80 #endif
81