1 #ifndef DRBD_TAG_MAGIC_H
2 #define DRBD_TAG_MAGIC_H
5 #define TT_REMOVED 0xE000
7 /* declare packet_type enums */
9 #define NL_PACKET(name, number, fields) P_ ## name = number,
10 #define NL_RESPONSE(name, number) P_ ## name = number,
11 #define NL_INTEGER(pn, pr, member)
12 #define NL_INT64(pn, pr, member)
13 #define NL_BIT(pn, pr, member)
14 #define NL_STRING(pn, pr, member, len)
16 P_nl_after_last_packet
,
19 /* These struct are used to deduce the size of the tag lists: */
20 #define NL_PACKET(name, number, fields) \
21 struct name ## _tag_len_struct { fields };
22 #define NL_INTEGER(pn, pr, member) \
23 int member; int tag_and_len ## member;
24 #define NL_INT64(pn, pr, member) \
25 __u64 member; int tag_and_len ## member;
26 #define NL_BIT(pn, pr, member) \
27 unsigned char member:1; int tag_and_len ## member;
28 #define NL_STRING(pn, pr, member, len) \
29 unsigned char member[len]; int member ## _len; \
30 int tag_and_len ## member;
31 #include <linux/drbd_nl.h>
33 /* declare tag-list-sizes */
34 static const int tag_list_sizes
[] = {
35 #define NL_PACKET(name, number, fields) 2 fields ,
36 #define NL_INTEGER(pn, pr, member) + 4 + 4
37 #define NL_INT64(pn, pr, member) + 4 + 8
38 #define NL_BIT(pn, pr, member) + 4 + 1
39 #define NL_STRING(pn, pr, member, len) + 4 + (len)
43 /* The two highest bits are used for the tag type */
44 #define TT_MASK 0xC000
45 #define TT_INTEGER 0x0000
46 #define TT_INT64 0x4000
48 #define TT_STRING 0xC000
49 /* The next bit indicates if processing of the tag is mandatory */
50 #define T_MANDATORY 0x2000
51 #define T_MAY_IGNORE 0x0000
52 #define TN_MASK 0x1fff
53 /* The remaining 13 bits are used to enumerate the tags */
55 #define tag_type(T) ((T) & TT_MASK)
56 #define tag_number(T) ((T) & TN_MASK)
58 /* declare tag enums */
59 #define NL_PACKET(name, number, fields) fields
61 #define NL_INTEGER(pn, pr, member) T_ ## member = pn | TT_INTEGER | pr ,
62 #define NL_INT64(pn, pr, member) T_ ## member = pn | TT_INT64 | pr ,
63 #define NL_BIT(pn, pr, member) T_ ## member = pn | TT_BIT | pr ,
64 #define NL_STRING(pn, pr, member, len) T_ ## member = pn | TT_STRING | pr ,
74 /* declare tag names */
75 #define NL_PACKET(name, number, fields) fields
76 static const struct tag tag_descriptions
[] = {
77 #define NL_INTEGER(pn, pr, member) [ pn ] = { #member, TT_INTEGER | pr, sizeof(int) },
78 #define NL_INT64(pn, pr, member) [ pn ] = { #member, TT_INT64 | pr, sizeof(__u64) },
79 #define NL_BIT(pn, pr, member) [ pn ] = { #member, TT_BIT | pr, sizeof(int) },
80 #define NL_STRING(pn, pr, member, len) [ pn ] = { #member, TT_STRING | pr, (len) },
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