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1da177e4 LT |
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 | #include <linux/config.h> | |
26 | ||
27 | #ifdef CONFIG_HISAX_DEBUG | |
28 | ||
29 | #define DBG(level, format, arg...) do { \ | |
30 | if (level & __debug_variable) \ | |
31 | printk(KERN_DEBUG "%s: " format "\n" , __FUNCTION__ , ## arg); \ | |
32 | } while (0) | |
33 | ||
34 | #define DBG_PACKET(level,data,count) \ | |
35 | if (level & __debug_variable) dump_packet(__FUNCTION__,data,count) | |
36 | ||
37 | #define DBG_SKB(level,skb) \ | |
38 | if ((level & __debug_variable) && skb) dump_packet(__FUNCTION__,skb->data,skb->len) | |
39 | ||
40 | ||
41 | static void __attribute__((unused)) | |
42 | dump_packet(const char *name,const u_char *data,int pkt_len) | |
43 | { | |
44 | #define DUMP_HDR_SIZE 20 | |
45 | #define DUMP_TLR_SIZE 8 | |
46 | if (pkt_len) { | |
47 | int i,len1,len2; | |
48 | ||
49 | printk(KERN_DEBUG "%s: length=%d,data=",name,pkt_len); | |
50 | ||
51 | if (pkt_len > DUMP_HDR_SIZE+ DUMP_TLR_SIZE) { | |
52 | len1 = DUMP_HDR_SIZE; | |
53 | len2 = DUMP_TLR_SIZE; | |
54 | } else { | |
55 | len1 = pkt_len > DUMP_HDR_SIZE ? DUMP_HDR_SIZE : pkt_len; | |
56 | len2 = 0; | |
57 | } | |
58 | for (i = 0; i < len1; ++i) { | |
59 | printk ("%.2x", data[i]); | |
60 | } | |
61 | if (len2) { | |
62 | printk (".."); | |
63 | for (i = pkt_len-DUMP_TLR_SIZE; i < pkt_len; ++i) { | |
64 | printk ("%.2x", data[i]); | |
65 | } | |
66 | } | |
67 | printk ("\n"); | |
68 | } | |
69 | #undef DUMP_HDR_SIZE | |
70 | #undef DUMP_TLR_SIZE | |
71 | } | |
72 | ||
73 | #else | |
74 | ||
75 | #define DBG(level, format, arg...) do {} while (0) | |
76 | #define DBG_PACKET(level,data,count) do {} while (0) | |
77 | #define DBG_SKB(level,skb) do {} while (0) | |
78 | ||
79 | #endif | |
80 | ||
81 | #endif |