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| author | Patrick McHardy <kaber@trash.net> | 2007-12-17 21:46:59 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:58:29 -0800 |
| commit | 89c002d66aafab93814b38d8dae43fa50aec390a (patch) | |
| tree | cb6bcd4e8d4bd95217ab3c1adf71c92d1f211ef1 /include/linux/netfilter | |
| parent | 8956695131b8a7878891667469899d667eb5892b (diff) | |
| download | lwn-89c002d66aafab93814b38d8dae43fa50aec390a.tar.gz lwn-89c002d66aafab93814b38d8dae43fa50aec390a.zip | |
[NETFILTER]: {ip,ip6,arp}_tables: consolidate iterator macros
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netfilter')
| -rw-r--r-- | include/linux/netfilter/x_tables.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 616e6f4ede59..8ab754e14ec0 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -126,6 +126,49 @@ struct xt_counters_info #define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */ +/* fn returns 0 to continue iteration */ +#define XT_MATCH_ITERATE(type, e, fn, args...) \ +({ \ + unsigned int __i; \ + int __ret = 0; \ + struct xt_entry_match *__m; \ + \ + for (__i = sizeof(type); \ + __i < (e)->target_offset; \ + __i += __m->u.match_size) { \ + __m = (void *)e + __i; \ + \ + __ret = fn(__m , ## args); \ + if (__ret != 0) \ + break; \ + } \ + __ret; \ +}) + +/* fn returns 0 to continue iteration */ +#define XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...) \ +({ \ + unsigned int __i, __n; \ + int __ret = 0; \ + type *__entry; \ + \ + for (__i = 0, __n = 0; __i < (size); \ + __i += __entry->next_offset, __n++) { \ + __entry = (void *)(entries) + __i; \ + if (__n < n) \ + continue; \ + \ + __ret = fn(__entry , ## args); \ + if (__ret != 0) \ + break; \ + } \ + __ret; \ +}) + +/* fn returns 0 to continue iteration */ +#define XT_ENTRY_ITERATE(type, entries, size, fn, args...) \ + XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args) + #ifdef __KERNEL__ #include <linux/netdevice.h> |