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6.1 do_matchº¯Êý ip_tables.c
do_matchͨ¹ýIPT_MATCH_ITERATEºêÀ´µ÷ÓÃ,
IPT_MATCH_ITERATEÊÇÔÚipt_do_tableº¯ÊýÖе÷Óõĺê
IPT_MATCH_ITERATE(e, do_match,
*pskb, in, out,
offset, &hotdrop)
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#define IPT_MATCH_ITERATE(e, fn, args...) \
({ \
unsigned int __i; \
int __ret = 0; \
struct ipt_entry_match *__match; \
\
for (__i = sizeof(struct ipt_entry); \
__i < (e)->target_offset; \
__i += __match->u.match_size) { \
__match = (void *)(e) + __i; \
&
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