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16#define xt_alloc_initial_table(type, typ2) ({ \
17 unsigned int hook_mask = info->valid_hooks; \
18 unsigned int nhooks = hweight32(hook_mask); \
19 unsigned int bytes = 0, hooknum = 0, i = 0; \
20 struct { \
21 struct type##_replace repl; \
22 struct type##_standard entries[]; \
23 } *tbl; \
24 struct type##_error *term; \
25 size_t term_offset = (offsetof(typeof(*tbl), entries[nhooks]) + \
26 __alignof__(*term) - 1) & ~(__alignof__(*term) - 1); \
27 tbl = kzalloc(term_offset + sizeof(*term), GFP_KERNEL); \
28 if (tbl == NULL) \
29 return NULL; \
30 term = (struct type##_error *)&(((char *)tbl)[term_offset]); \
31 strncpy(tbl->repl.name, info->name, sizeof(tbl->repl.name)); \
32 *term = (struct type##_error)typ2##_ERROR_INIT; \
33 tbl->repl.valid_hooks = hook_mask; \
34 tbl->repl.num_entries = nhooks + 1; \
35 tbl->repl.size = nhooks * sizeof(struct type##_standard) + \
36 sizeof(struct type##_error); \
37 for (; hook_mask != 0; hook_mask >>= 1, ++hooknum) { \
38 if (!(hook_mask & 1)) \
39 continue; \
40 tbl->repl.hook_entry[hooknum] = bytes; \
41 tbl->repl.underflow[hooknum] = bytes; \
42 tbl->entries[i++] = (struct type##_standard) \
43 typ2##_STANDARD_INIT(NF_ACCEPT); \
44 bytes += sizeof(struct type##_standard); \
45 } \
46 tbl; \
47})
48