Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
This commit is contained in:
commit
54831a83bf
|
@ -120,6 +120,7 @@ struct xt_counters_info {
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#define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */
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#ifndef __KERNEL__
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/* fn returns 0 to continue iteration */
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#define XT_MATCH_ITERATE(type, e, fn, args...) \
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({ \
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@ -163,6 +164,22 @@ struct xt_counters_info {
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#define XT_ENTRY_ITERATE(type, entries, size, fn, args...) \
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XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)
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#endif /* !__KERNEL__ */
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/* pos is normally a struct ipt_entry/ip6t_entry/etc. */
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#define xt_entry_foreach(pos, ehead, esize) \
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for ((pos) = (typeof(pos))(ehead); \
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(pos) < (typeof(pos))((char *)(ehead) + (esize)); \
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(pos) = (typeof(pos))((char *)(pos) + (pos)->next_offset))
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/* can only be xt_entry_match, so no use of typeof here */
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#define xt_ematch_foreach(pos, entry) \
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for ((pos) = (struct xt_entry_match *)entry->elems; \
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(pos) < (struct xt_entry_match *)((char *)(entry) + \
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(entry)->target_offset); \
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(pos) = (struct xt_entry_match *)((char *)(pos) + \
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(pos)->u.match_size))
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#ifdef __KERNEL__
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#include <linux/netdevice.h>
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@ -211,9 +211,11 @@ static __inline__ struct arpt_entry_target *arpt_get_target(struct arpt_entry *e
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return (void *)e + e->target_offset;
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}
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#ifndef __KERNEL__
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/* fn returns 0 to continue iteration */
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#define ARPT_ENTRY_ITERATE(entries, size, fn, args...) \
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XT_ENTRY_ITERATE(struct arpt_entry, entries, size, fn, ## args)
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#endif
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/*
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* Main firewall chains definitions and global var's definitions.
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@ -291,14 +293,6 @@ compat_arpt_get_target(struct compat_arpt_entry *e)
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#define COMPAT_ARPT_ALIGN(s) COMPAT_XT_ALIGN(s)
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/* fn returns 0 to continue iteration */
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#define COMPAT_ARPT_ENTRY_ITERATE(entries, size, fn, args...) \
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XT_ENTRY_ITERATE(struct compat_arpt_entry, entries, size, fn, ## args)
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#define COMPAT_ARPT_ENTRY_ITERATE_CONTINUE(entries, size, n, fn, args...) \
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XT_ENTRY_ITERATE_CONTINUE(struct compat_arpt_entry, entries, size, n, \
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fn, ## args)
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#endif /* CONFIG_COMPAT */
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#endif /*__KERNEL__*/
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#endif /* _ARPTABLES_H */
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|
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@ -223,6 +223,7 @@ ipt_get_target(struct ipt_entry *e)
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return (void *)e + e->target_offset;
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}
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#ifndef __KERNEL__
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/* fn returns 0 to continue iteration */
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#define IPT_MATCH_ITERATE(e, fn, args...) \
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XT_MATCH_ITERATE(struct ipt_entry, e, fn, ## args)
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@ -230,6 +231,7 @@ ipt_get_target(struct ipt_entry *e)
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/* fn returns 0 to continue iteration */
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#define IPT_ENTRY_ITERATE(entries, size, fn, args...) \
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XT_ENTRY_ITERATE(struct ipt_entry, entries, size, fn, ## args)
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#endif
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/*
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* Main firewall chains definitions and global var's definitions.
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@ -313,19 +315,6 @@ compat_ipt_get_target(struct compat_ipt_entry *e)
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#define COMPAT_IPT_ALIGN(s) COMPAT_XT_ALIGN(s)
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/* fn returns 0 to continue iteration */
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#define COMPAT_IPT_MATCH_ITERATE(e, fn, args...) \
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XT_MATCH_ITERATE(struct compat_ipt_entry, e, fn, ## args)
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/* fn returns 0 to continue iteration */
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#define COMPAT_IPT_ENTRY_ITERATE(entries, size, fn, args...) \
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XT_ENTRY_ITERATE(struct compat_ipt_entry, entries, size, fn, ## args)
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/* fn returns 0 to continue iteration */
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#define COMPAT_IPT_ENTRY_ITERATE_CONTINUE(entries, size, n, fn, args...) \
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XT_ENTRY_ITERATE_CONTINUE(struct compat_ipt_entry, entries, size, n, \
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fn, ## args)
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#endif /* CONFIG_COMPAT */
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#endif /*__KERNEL__*/
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#endif /* _IPTABLES_H */
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|
|
|
@ -280,6 +280,7 @@ ip6t_get_target(struct ip6t_entry *e)
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return (void *)e + e->target_offset;
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}
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#ifndef __KERNEL__
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/* fn returns 0 to continue iteration */
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#define IP6T_MATCH_ITERATE(e, fn, args...) \
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XT_MATCH_ITERATE(struct ip6t_entry, e, fn, ## args)
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|
@ -287,6 +288,7 @@ ip6t_get_target(struct ip6t_entry *e)
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/* fn returns 0 to continue iteration */
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#define IP6T_ENTRY_ITERATE(entries, size, fn, args...) \
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XT_ENTRY_ITERATE(struct ip6t_entry, entries, size, fn, ## args)
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#endif
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/*
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* Main firewall chains definitions and global var's definitions.
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|
@ -341,18 +343,6 @@ compat_ip6t_get_target(struct compat_ip6t_entry *e)
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#define COMPAT_IP6T_ALIGN(s) COMPAT_XT_ALIGN(s)
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/* fn returns 0 to continue iteration */
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#define COMPAT_IP6T_MATCH_ITERATE(e, fn, args...) \
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XT_MATCH_ITERATE(struct compat_ip6t_entry, e, fn, ## args)
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/* fn returns 0 to continue iteration */
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#define COMPAT_IP6T_ENTRY_ITERATE(entries, size, fn, args...) \
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XT_ENTRY_ITERATE(struct compat_ip6t_entry, entries, size, fn, ## args)
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#define COMPAT_IP6T_ENTRY_ITERATE_CONTINUE(entries, size, n, fn, args...) \
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XT_ENTRY_ITERATE_CONTINUE(struct compat_ip6t_entry, entries, size, n, \
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fn, ## args)
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#endif /* CONFIG_COMPAT */
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#endif /*__KERNEL__*/
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#endif /* _IP6_TABLES_H */
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|
|
@ -512,8 +512,7 @@ static inline int check_target(struct arpt_entry *e, const char *name)
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}
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static inline int
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find_check_entry(struct arpt_entry *e, const char *name, unsigned int size,
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unsigned int *i)
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find_check_entry(struct arpt_entry *e, const char *name, unsigned int size)
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{
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struct arpt_entry_target *t;
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struct xt_target *target;
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@ -538,8 +537,6 @@ find_check_entry(struct arpt_entry *e, const char *name, unsigned int size,
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ret = check_target(e, name);
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if (ret)
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goto err;
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(*i)++;
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return 0;
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err:
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module_put(t->u.kernel.target->me);
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|
@ -568,8 +565,7 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
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const unsigned char *limit,
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const unsigned int *hook_entries,
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const unsigned int *underflows,
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unsigned int valid_hooks,
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unsigned int *i)
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unsigned int valid_hooks)
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{
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unsigned int h;
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@ -606,19 +602,14 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
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/* Clear counters and comefrom */
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e->counters = ((struct xt_counters) { 0, 0 });
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e->comefrom = 0;
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(*i)++;
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return 0;
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}
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static inline int cleanup_entry(struct arpt_entry *e, unsigned int *i)
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static inline void cleanup_entry(struct arpt_entry *e)
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{
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struct xt_tgdtor_param par;
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struct arpt_entry_target *t;
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if (i && (*i)-- == 0)
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return 1;
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t = arpt_get_target(e);
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par.target = t->u.kernel.target;
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par.targinfo = t->data;
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|
@ -626,26 +617,20 @@ static inline int cleanup_entry(struct arpt_entry *e, unsigned int *i)
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if (par.target->destroy != NULL)
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par.target->destroy(&par);
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module_put(par.target->me);
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return 0;
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}
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/* Checks and translates the user-supplied table segment (held in
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* newinfo).
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*/
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static int translate_table(const char *name,
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unsigned int valid_hooks,
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struct xt_table_info *newinfo,
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void *entry0,
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unsigned int size,
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unsigned int number,
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const unsigned int *hook_entries,
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const unsigned int *underflows)
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static int translate_table(struct xt_table_info *newinfo, void *entry0,
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const struct arpt_replace *repl)
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{
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struct arpt_entry *iter;
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unsigned int i;
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int ret;
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int ret = 0;
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newinfo->size = size;
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newinfo->number = number;
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newinfo->size = repl->size;
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newinfo->number = repl->num_entries;
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/* Init all hooks to impossible value. */
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for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
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|
@ -657,52 +642,61 @@ static int translate_table(const char *name,
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i = 0;
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/* Walk through entries, checking offsets. */
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ret = ARPT_ENTRY_ITERATE(entry0, newinfo->size,
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check_entry_size_and_hooks,
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newinfo,
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entry0,
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entry0 + size,
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hook_entries, underflows, valid_hooks, &i);
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xt_entry_foreach(iter, entry0, newinfo->size) {
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ret = check_entry_size_and_hooks(iter, newinfo, entry0,
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entry0 + repl->size, repl->hook_entry, repl->underflow,
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repl->valid_hooks);
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if (ret != 0)
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break;
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++i;
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}
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duprintf("translate_table: ARPT_ENTRY_ITERATE gives %d\n", ret);
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if (ret != 0)
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return ret;
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|
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if (i != number) {
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if (i != repl->num_entries) {
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duprintf("translate_table: %u not %u entries\n",
|
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i, number);
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i, repl->num_entries);
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return -EINVAL;
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}
|
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|
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/* Check hooks all assigned */
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for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
|
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/* Only hooks which are valid */
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if (!(valid_hooks & (1 << i)))
|
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if (!(repl->valid_hooks & (1 << i)))
|
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continue;
|
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if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
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duprintf("Invalid hook entry %u %u\n",
|
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i, hook_entries[i]);
|
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i, repl->hook_entry[i]);
|
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return -EINVAL;
|
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}
|
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if (newinfo->underflow[i] == 0xFFFFFFFF) {
|
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duprintf("Invalid underflow %u %u\n",
|
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i, underflows[i]);
|
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i, repl->underflow[i]);
|
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return -EINVAL;
|
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}
|
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}
|
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|
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if (!mark_source_chains(newinfo, valid_hooks, entry0)) {
|
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if (!mark_source_chains(newinfo, repl->valid_hooks, entry0)) {
|
||||
duprintf("Looping hook\n");
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||||
return -ELOOP;
|
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}
|
||||
|
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/* Finally, each sanity check must pass */
|
||||
i = 0;
|
||||
ret = ARPT_ENTRY_ITERATE(entry0, newinfo->size,
|
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find_check_entry, name, size, &i);
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
ret = find_check_entry(iter, repl->name, repl->size);
|
||||
if (ret != 0)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
|
||||
if (ret != 0) {
|
||||
ARPT_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
cleanup_entry, &i);
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
if (i-- == 0)
|
||||
break;
|
||||
cleanup_entry(iter);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -715,30 +709,10 @@ static int translate_table(const char *name,
|
|||
return ret;
|
||||
}
|
||||
|
||||
/* Gets counters. */
|
||||
static inline int add_entry_to_counter(const struct arpt_entry *e,
|
||||
struct xt_counters total[],
|
||||
unsigned int *i)
|
||||
{
|
||||
ADD_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int set_entry_to_counter(const struct arpt_entry *e,
|
||||
struct xt_counters total[],
|
||||
unsigned int *i)
|
||||
{
|
||||
SET_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void get_counters(const struct xt_table_info *t,
|
||||
struct xt_counters counters[])
|
||||
{
|
||||
struct arpt_entry *iter;
|
||||
unsigned int cpu;
|
||||
unsigned int i;
|
||||
unsigned int curcpu;
|
||||
|
@ -754,22 +728,22 @@ static void get_counters(const struct xt_table_info *t,
|
|||
curcpu = smp_processor_id();
|
||||
|
||||
i = 0;
|
||||
ARPT_ENTRY_ITERATE(t->entries[curcpu],
|
||||
t->size,
|
||||
set_entry_to_counter,
|
||||
counters,
|
||||
&i);
|
||||
xt_entry_foreach(iter, t->entries[curcpu], t->size) {
|
||||
SET_COUNTER(counters[i], iter->counters.bcnt,
|
||||
iter->counters.pcnt);
|
||||
++i;
|
||||
}
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (cpu == curcpu)
|
||||
continue;
|
||||
i = 0;
|
||||
xt_info_wrlock(cpu);
|
||||
ARPT_ENTRY_ITERATE(t->entries[cpu],
|
||||
t->size,
|
||||
add_entry_to_counter,
|
||||
counters,
|
||||
&i);
|
||||
xt_entry_foreach(iter, t->entries[cpu], t->size) {
|
||||
ADD_COUNTER(counters[i], iter->counters.bcnt,
|
||||
iter->counters.pcnt);
|
||||
++i;
|
||||
}
|
||||
xt_info_wrunlock(cpu);
|
||||
}
|
||||
local_bh_enable();
|
||||
|
@ -899,7 +873,9 @@ static int compat_calc_entry(const struct arpt_entry *e,
|
|||
static int compat_table_info(const struct xt_table_info *info,
|
||||
struct xt_table_info *newinfo)
|
||||
{
|
||||
struct arpt_entry *iter;
|
||||
void *loc_cpu_entry;
|
||||
int ret;
|
||||
|
||||
if (!newinfo || !info)
|
||||
return -EINVAL;
|
||||
|
@ -908,9 +884,12 @@ static int compat_table_info(const struct xt_table_info *info,
|
|||
memcpy(newinfo, info, offsetof(struct xt_table_info, entries));
|
||||
newinfo->initial_entries = 0;
|
||||
loc_cpu_entry = info->entries[raw_smp_processor_id()];
|
||||
return ARPT_ENTRY_ITERATE(loc_cpu_entry, info->size,
|
||||
compat_calc_entry, info, loc_cpu_entry,
|
||||
newinfo);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, info->size) {
|
||||
ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
@ -1025,6 +1004,7 @@ static int __do_replace(struct net *net, const char *name,
|
|||
struct xt_table_info *oldinfo;
|
||||
struct xt_counters *counters;
|
||||
void *loc_cpu_old_entry;
|
||||
struct arpt_entry *iter;
|
||||
|
||||
ret = 0;
|
||||
counters = vmalloc_node(num_counters * sizeof(struct xt_counters),
|
||||
|
@ -1068,8 +1048,8 @@ static int __do_replace(struct net *net, const char *name,
|
|||
|
||||
/* Decrease module usage counts and free resource */
|
||||
loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
|
||||
ARPT_ENTRY_ITERATE(loc_cpu_old_entry, oldinfo->size, cleanup_entry,
|
||||
NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_old_entry, oldinfo->size)
|
||||
cleanup_entry(iter);
|
||||
|
||||
xt_free_table_info(oldinfo);
|
||||
if (copy_to_user(counters_ptr, counters,
|
||||
|
@ -1095,6 +1075,7 @@ static int do_replace(struct net *net, const void __user *user,
|
|||
struct arpt_replace tmp;
|
||||
struct xt_table_info *newinfo;
|
||||
void *loc_cpu_entry;
|
||||
struct arpt_entry *iter;
|
||||
|
||||
if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
|
||||
return -EFAULT;
|
||||
|
@ -1115,9 +1096,7 @@ static int do_replace(struct net *net, const void __user *user,
|
|||
goto free_newinfo;
|
||||
}
|
||||
|
||||
ret = translate_table(tmp.name, tmp.valid_hooks,
|
||||
newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
|
||||
tmp.hook_entry, tmp.underflow);
|
||||
ret = translate_table(newinfo, loc_cpu_entry, &tmp);
|
||||
if (ret != 0)
|
||||
goto free_newinfo;
|
||||
|
||||
|
@ -1130,25 +1109,13 @@ static int do_replace(struct net *net, const void __user *user,
|
|||
return 0;
|
||||
|
||||
free_newinfo_untrans:
|
||||
ARPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, newinfo->size)
|
||||
cleanup_entry(iter);
|
||||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* We're lazy, and add to the first CPU; overflow works its fey magic
|
||||
* and everything is OK. */
|
||||
static int
|
||||
add_counter_to_entry(struct arpt_entry *e,
|
||||
const struct xt_counters addme[],
|
||||
unsigned int *i)
|
||||
{
|
||||
ADD_COUNTER(e->counters, addme[*i].bcnt, addme[*i].pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int do_add_counters(struct net *net, const void __user *user,
|
||||
unsigned int len, int compat)
|
||||
{
|
||||
|
@ -1163,6 +1130,7 @@ static int do_add_counters(struct net *net, const void __user *user,
|
|||
const struct xt_table_info *private;
|
||||
int ret = 0;
|
||||
void *loc_cpu_entry;
|
||||
struct arpt_entry *iter;
|
||||
#ifdef CONFIG_COMPAT
|
||||
struct compat_xt_counters_info compat_tmp;
|
||||
|
||||
|
@ -1220,11 +1188,10 @@ static int do_add_counters(struct net *net, const void __user *user,
|
|||
curcpu = smp_processor_id();
|
||||
loc_cpu_entry = private->entries[curcpu];
|
||||
xt_info_wrlock(curcpu);
|
||||
ARPT_ENTRY_ITERATE(loc_cpu_entry,
|
||||
private->size,
|
||||
add_counter_to_entry,
|
||||
paddc,
|
||||
&i);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, private->size) {
|
||||
ADD_COUNTER(iter->counters, paddc[i].bcnt, paddc[i].pcnt);
|
||||
++i;
|
||||
}
|
||||
xt_info_wrunlock(curcpu);
|
||||
unlock_up_free:
|
||||
local_bh_enable();
|
||||
|
@ -1237,17 +1204,12 @@ static int do_add_counters(struct net *net, const void __user *user,
|
|||
}
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
static inline int
|
||||
compat_release_entry(struct compat_arpt_entry *e, unsigned int *i)
|
||||
static inline void compat_release_entry(struct compat_arpt_entry *e)
|
||||
{
|
||||
struct arpt_entry_target *t;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
|
||||
t = compat_arpt_get_target(e);
|
||||
module_put(t->u.kernel.target->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int
|
||||
|
@ -1258,7 +1220,6 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
|
|||
const unsigned char *limit,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows,
|
||||
unsigned int *i,
|
||||
const char *name)
|
||||
{
|
||||
struct arpt_entry_target *t;
|
||||
|
@ -1318,8 +1279,6 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
|
|||
/* Clear counters and comefrom */
|
||||
memset(&e->counters, 0, sizeof(e->counters));
|
||||
e->comefrom = 0;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
|
||||
release_target:
|
||||
|
@ -1363,19 +1322,6 @@ compat_copy_entry_from_user(struct compat_arpt_entry *e, void **dstptr,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static inline int compat_check_entry(struct arpt_entry *e, const char *name,
|
||||
unsigned int *i)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = check_target(e, name);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int translate_compat_table(const char *name,
|
||||
unsigned int valid_hooks,
|
||||
struct xt_table_info **pinfo,
|
||||
|
@ -1388,8 +1334,10 @@ static int translate_compat_table(const char *name,
|
|||
unsigned int i, j;
|
||||
struct xt_table_info *newinfo, *info;
|
||||
void *pos, *entry0, *entry1;
|
||||
struct compat_arpt_entry *iter0;
|
||||
struct arpt_entry *iter1;
|
||||
unsigned int size;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
info = *pinfo;
|
||||
entry0 = *pentry0;
|
||||
|
@ -1406,13 +1354,14 @@ static int translate_compat_table(const char *name,
|
|||
j = 0;
|
||||
xt_compat_lock(NFPROTO_ARP);
|
||||
/* Walk through entries, checking offsets. */
|
||||
ret = COMPAT_ARPT_ENTRY_ITERATE(entry0, total_size,
|
||||
check_compat_entry_size_and_hooks,
|
||||
info, &size, entry0,
|
||||
entry0 + total_size,
|
||||
hook_entries, underflows, &j, name);
|
||||
if (ret != 0)
|
||||
goto out_unlock;
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
ret = check_compat_entry_size_and_hooks(iter0, info, &size,
|
||||
entry0, entry0 + total_size, hook_entries, underflows,
|
||||
name);
|
||||
if (ret != 0)
|
||||
goto out_unlock;
|
||||
++j;
|
||||
}
|
||||
|
||||
ret = -EINVAL;
|
||||
if (j != number) {
|
||||
|
@ -1451,9 +1400,12 @@ static int translate_compat_table(const char *name,
|
|||
entry1 = newinfo->entries[raw_smp_processor_id()];
|
||||
pos = entry1;
|
||||
size = total_size;
|
||||
ret = COMPAT_ARPT_ENTRY_ITERATE(entry0, total_size,
|
||||
compat_copy_entry_from_user,
|
||||
&pos, &size, name, newinfo, entry1);
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
ret = compat_copy_entry_from_user(iter0, &pos,
|
||||
&size, name, newinfo, entry1);
|
||||
if (ret != 0)
|
||||
break;
|
||||
}
|
||||
xt_compat_flush_offsets(NFPROTO_ARP);
|
||||
xt_compat_unlock(NFPROTO_ARP);
|
||||
if (ret)
|
||||
|
@ -1464,13 +1416,32 @@ static int translate_compat_table(const char *name,
|
|||
goto free_newinfo;
|
||||
|
||||
i = 0;
|
||||
ret = ARPT_ENTRY_ITERATE(entry1, newinfo->size, compat_check_entry,
|
||||
name, &i);
|
||||
xt_entry_foreach(iter1, entry1, newinfo->size) {
|
||||
ret = check_target(iter1, name);
|
||||
if (ret != 0)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
if (ret) {
|
||||
/*
|
||||
* The first i matches need cleanup_entry (calls ->destroy)
|
||||
* because they had called ->check already. The other j-i
|
||||
* entries need only release.
|
||||
*/
|
||||
int skip = i;
|
||||
j -= i;
|
||||
COMPAT_ARPT_ENTRY_ITERATE_CONTINUE(entry0, newinfo->size, i,
|
||||
compat_release_entry, &j);
|
||||
ARPT_ENTRY_ITERATE(entry1, newinfo->size, cleanup_entry, &i);
|
||||
xt_entry_foreach(iter0, entry0, newinfo->size) {
|
||||
if (skip-- > 0)
|
||||
continue;
|
||||
if (j-- == 0)
|
||||
break;
|
||||
compat_release_entry(iter0);
|
||||
}
|
||||
xt_entry_foreach(iter1, entry1, newinfo->size) {
|
||||
if (i-- == 0)
|
||||
break;
|
||||
cleanup_entry(iter1);
|
||||
}
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
}
|
||||
|
@ -1488,7 +1459,11 @@ static int translate_compat_table(const char *name,
|
|||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
out:
|
||||
COMPAT_ARPT_ENTRY_ITERATE(entry0, total_size, compat_release_entry, &j);
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
compat_release_entry(iter0);
|
||||
}
|
||||
return ret;
|
||||
out_unlock:
|
||||
xt_compat_flush_offsets(NFPROTO_ARP);
|
||||
|
@ -1515,6 +1490,7 @@ static int compat_do_replace(struct net *net, void __user *user,
|
|||
struct compat_arpt_replace tmp;
|
||||
struct xt_table_info *newinfo;
|
||||
void *loc_cpu_entry;
|
||||
struct arpt_entry *iter;
|
||||
|
||||
if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
|
||||
return -EFAULT;
|
||||
|
@ -1552,7 +1528,8 @@ static int compat_do_replace(struct net *net, void __user *user,
|
|||
return 0;
|
||||
|
||||
free_newinfo_untrans:
|
||||
ARPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, newinfo->size)
|
||||
cleanup_entry(iter);
|
||||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
|
@ -1586,7 +1563,7 @@ static int compat_do_arpt_set_ctl(struct sock *sk, int cmd, void __user *user,
|
|||
static int compat_copy_entry_to_user(struct arpt_entry *e, void __user **dstptr,
|
||||
compat_uint_t *size,
|
||||
struct xt_counters *counters,
|
||||
unsigned int *i)
|
||||
unsigned int i)
|
||||
{
|
||||
struct arpt_entry_target *t;
|
||||
struct compat_arpt_entry __user *ce;
|
||||
|
@ -1594,14 +1571,12 @@ static int compat_copy_entry_to_user(struct arpt_entry *e, void __user **dstptr,
|
|||
compat_uint_t origsize;
|
||||
int ret;
|
||||
|
||||
ret = -EFAULT;
|
||||
origsize = *size;
|
||||
ce = (struct compat_arpt_entry __user *)*dstptr;
|
||||
if (copy_to_user(ce, e, sizeof(struct arpt_entry)))
|
||||
goto out;
|
||||
|
||||
if (copy_to_user(&ce->counters, &counters[*i], sizeof(counters[*i])))
|
||||
goto out;
|
||||
if (copy_to_user(ce, e, sizeof(struct arpt_entry)) != 0 ||
|
||||
copy_to_user(&ce->counters, &counters[i],
|
||||
sizeof(counters[i])) != 0)
|
||||
return -EFAULT;
|
||||
|
||||
*dstptr += sizeof(struct compat_arpt_entry);
|
||||
*size -= sizeof(struct arpt_entry) - sizeof(struct compat_arpt_entry);
|
||||
|
@ -1611,18 +1586,12 @@ static int compat_copy_entry_to_user(struct arpt_entry *e, void __user **dstptr,
|
|||
t = arpt_get_target(e);
|
||||
ret = xt_compat_target_to_user(t, dstptr, size);
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = -EFAULT;
|
||||
return ret;
|
||||
next_offset = e->next_offset - (origsize - *size);
|
||||
if (put_user(target_offset, &ce->target_offset))
|
||||
goto out;
|
||||
if (put_user(next_offset, &ce->next_offset))
|
||||
goto out;
|
||||
|
||||
(*i)++;
|
||||
if (put_user(target_offset, &ce->target_offset) != 0 ||
|
||||
put_user(next_offset, &ce->next_offset) != 0)
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int compat_copy_entries_to_user(unsigned int total_size,
|
||||
|
@ -1636,6 +1605,7 @@ static int compat_copy_entries_to_user(unsigned int total_size,
|
|||
int ret = 0;
|
||||
void *loc_cpu_entry;
|
||||
unsigned int i = 0;
|
||||
struct arpt_entry *iter;
|
||||
|
||||
counters = alloc_counters(table);
|
||||
if (IS_ERR(counters))
|
||||
|
@ -1645,9 +1615,12 @@ static int compat_copy_entries_to_user(unsigned int total_size,
|
|||
loc_cpu_entry = private->entries[raw_smp_processor_id()];
|
||||
pos = userptr;
|
||||
size = total_size;
|
||||
ret = ARPT_ENTRY_ITERATE(loc_cpu_entry, total_size,
|
||||
compat_copy_entry_to_user,
|
||||
&pos, &size, counters, &i);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, total_size) {
|
||||
ret = compat_copy_entry_to_user(iter, &pos,
|
||||
&size, counters, i++);
|
||||
if (ret != 0)
|
||||
break;
|
||||
}
|
||||
vfree(counters);
|
||||
return ret;
|
||||
}
|
||||
|
@ -1815,12 +1788,7 @@ struct xt_table *arpt_register_table(struct net *net,
|
|||
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
|
||||
memcpy(loc_cpu_entry, repl->entries, repl->size);
|
||||
|
||||
ret = translate_table(table->name, table->valid_hooks,
|
||||
newinfo, loc_cpu_entry, repl->size,
|
||||
repl->num_entries,
|
||||
repl->hook_entry,
|
||||
repl->underflow);
|
||||
|
||||
ret = translate_table(newinfo, loc_cpu_entry, repl);
|
||||
duprintf("arpt_register_table: translate table gives %d\n", ret);
|
||||
if (ret != 0)
|
||||
goto out_free;
|
||||
|
@ -1843,13 +1811,14 @@ void arpt_unregister_table(struct xt_table *table)
|
|||
struct xt_table_info *private;
|
||||
void *loc_cpu_entry;
|
||||
struct module *table_owner = table->me;
|
||||
struct arpt_entry *iter;
|
||||
|
||||
private = xt_unregister_table(table);
|
||||
|
||||
/* Decrease module usage counts and free resources */
|
||||
loc_cpu_entry = private->entries[raw_smp_processor_id()];
|
||||
ARPT_ENTRY_ITERATE(loc_cpu_entry, private->size,
|
||||
cleanup_entry, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, private->size)
|
||||
cleanup_entry(iter);
|
||||
if (private->number > private->initial_entries)
|
||||
module_put(table_owner);
|
||||
xt_free_table_info(private);
|
||||
|
|
|
@ -288,6 +288,7 @@ static void trace_packet(const struct sk_buff *skb,
|
|||
const void *table_base;
|
||||
const struct ipt_entry *root;
|
||||
const char *hookname, *chainname, *comment;
|
||||
const struct ipt_entry *iter;
|
||||
unsigned int rulenum = 0;
|
||||
|
||||
table_base = private->entries[smp_processor_id()];
|
||||
|
@ -296,10 +297,10 @@ static void trace_packet(const struct sk_buff *skb,
|
|||
hookname = chainname = hooknames[hook];
|
||||
comment = comments[NF_IP_TRACE_COMMENT_RULE];
|
||||
|
||||
IPT_ENTRY_ITERATE(root,
|
||||
private->size - private->hook_entry[hook],
|
||||
get_chainname_rulenum,
|
||||
e, hookname, &chainname, &comment, &rulenum);
|
||||
xt_entry_foreach(iter, root, private->size - private->hook_entry[hook])
|
||||
if (get_chainname_rulenum(iter, e, hookname,
|
||||
&chainname, &comment, &rulenum) != 0)
|
||||
break;
|
||||
|
||||
nf_log_packet(AF_INET, hook, skb, in, out, &trace_loginfo,
|
||||
"TRACE: %s:%s:%s:%u ",
|
||||
|
@ -365,16 +366,21 @@ ipt_do_table(struct sk_buff *skb,
|
|||
|
||||
do {
|
||||
const struct ipt_entry_target *t;
|
||||
const struct xt_entry_match *ematch;
|
||||
|
||||
IP_NF_ASSERT(e);
|
||||
IP_NF_ASSERT(back);
|
||||
if (!ip_packet_match(ip, indev, outdev,
|
||||
&e->ip, mtpar.fragoff) ||
|
||||
IPT_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) {
|
||||
&e->ip, mtpar.fragoff)) {
|
||||
no_match:
|
||||
e = ipt_next_entry(e);
|
||||
continue;
|
||||
}
|
||||
|
||||
xt_ematch_foreach(ematch, e)
|
||||
if (do_match(ematch, skb, &mtpar) != 0)
|
||||
goto no_match;
|
||||
|
||||
ADD_COUNTER(e->counters, ntohs(ip->tot_len), 1);
|
||||
|
||||
t = ipt_get_target(e);
|
||||
|
@ -566,14 +572,10 @@ mark_source_chains(const struct xt_table_info *newinfo,
|
|||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
cleanup_match(struct ipt_entry_match *m, struct net *net, unsigned int *i)
|
||||
static void cleanup_match(struct ipt_entry_match *m, struct net *net)
|
||||
{
|
||||
struct xt_mtdtor_param par;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
|
||||
par.net = net;
|
||||
par.match = m->u.kernel.match;
|
||||
par.matchinfo = m->data;
|
||||
|
@ -581,7 +583,6 @@ cleanup_match(struct ipt_entry_match *m, struct net *net, unsigned int *i)
|
|||
if (par.match->destroy != NULL)
|
||||
par.match->destroy(&par);
|
||||
module_put(par.match->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
|
@ -606,8 +607,7 @@ check_entry(const struct ipt_entry *e, const char *name)
|
|||
}
|
||||
|
||||
static int
|
||||
check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par,
|
||||
unsigned int *i)
|
||||
check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
|
||||
{
|
||||
const struct ipt_ip *ip = par->entryinfo;
|
||||
int ret;
|
||||
|
@ -622,13 +622,11 @@ check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par,
|
|||
par.match->name);
|
||||
return ret;
|
||||
}
|
||||
++*i;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par,
|
||||
unsigned int *i)
|
||||
find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
|
||||
{
|
||||
struct xt_match *match;
|
||||
int ret;
|
||||
|
@ -642,7 +640,7 @@ find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par,
|
|||
}
|
||||
m->u.kernel.match = match;
|
||||
|
||||
ret = check_match(m, par, i);
|
||||
ret = check_match(m, par);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
|
@ -678,13 +676,14 @@ static int check_target(struct ipt_entry *e, struct net *net, const char *name)
|
|||
|
||||
static int
|
||||
find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
|
||||
unsigned int size, unsigned int *i)
|
||||
unsigned int size)
|
||||
{
|
||||
struct ipt_entry_target *t;
|
||||
struct xt_target *target;
|
||||
int ret;
|
||||
unsigned int j;
|
||||
struct xt_mtchk_param mtpar;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
ret = check_entry(e, name);
|
||||
if (ret)
|
||||
|
@ -696,9 +695,12 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
|
|||
mtpar.entryinfo = &e->ip;
|
||||
mtpar.hook_mask = e->comefrom;
|
||||
mtpar.family = NFPROTO_IPV4;
|
||||
ret = IPT_MATCH_ITERATE(e, find_check_match, &mtpar, &j);
|
||||
if (ret != 0)
|
||||
goto cleanup_matches;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = find_check_match(ematch, &mtpar);
|
||||
if (ret != 0)
|
||||
goto cleanup_matches;
|
||||
++j;
|
||||
}
|
||||
|
||||
t = ipt_get_target(e);
|
||||
target = try_then_request_module(xt_find_target(AF_INET,
|
||||
|
@ -715,13 +717,15 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
|
|||
ret = check_target(e, net, name);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
err:
|
||||
module_put(t->u.kernel.target->me);
|
||||
cleanup_matches:
|
||||
IPT_MATCH_ITERATE(e, cleanup_match, net, &j);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
cleanup_match(ematch, net);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -747,8 +751,7 @@ check_entry_size_and_hooks(struct ipt_entry *e,
|
|||
const unsigned char *limit,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows,
|
||||
unsigned int valid_hooks,
|
||||
unsigned int *i)
|
||||
unsigned int valid_hooks)
|
||||
{
|
||||
unsigned int h;
|
||||
|
||||
|
@ -785,22 +788,19 @@ check_entry_size_and_hooks(struct ipt_entry *e,
|
|||
/* Clear counters and comefrom */
|
||||
e->counters = ((struct xt_counters) { 0, 0 });
|
||||
e->comefrom = 0;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
cleanup_entry(struct ipt_entry *e, struct net *net, unsigned int *i)
|
||||
static void
|
||||
cleanup_entry(struct ipt_entry *e, struct net *net)
|
||||
{
|
||||
struct xt_tgdtor_param par;
|
||||
struct ipt_entry_target *t;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
/* Cleanup all matches */
|
||||
IPT_MATCH_ITERATE(e, cleanup_match, net, NULL);
|
||||
xt_ematch_foreach(ematch, e)
|
||||
cleanup_match(ematch, net);
|
||||
t = ipt_get_target(e);
|
||||
|
||||
par.net = net;
|
||||
|
@ -810,27 +810,20 @@ cleanup_entry(struct ipt_entry *e, struct net *net, unsigned int *i)
|
|||
if (par.target->destroy != NULL)
|
||||
par.target->destroy(&par);
|
||||
module_put(par.target->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Checks and translates the user-supplied table segment (held in
|
||||
newinfo) */
|
||||
static int
|
||||
translate_table(struct net *net,
|
||||
const char *name,
|
||||
unsigned int valid_hooks,
|
||||
struct xt_table_info *newinfo,
|
||||
void *entry0,
|
||||
unsigned int size,
|
||||
unsigned int number,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows)
|
||||
translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
|
||||
const struct ipt_replace *repl)
|
||||
{
|
||||
struct ipt_entry *iter;
|
||||
unsigned int i;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
newinfo->size = size;
|
||||
newinfo->number = number;
|
||||
newinfo->size = repl->size;
|
||||
newinfo->number = repl->num_entries;
|
||||
|
||||
/* Init all hooks to impossible value. */
|
||||
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
|
||||
|
@ -841,49 +834,56 @@ translate_table(struct net *net,
|
|||
duprintf("translate_table: size %u\n", newinfo->size);
|
||||
i = 0;
|
||||
/* Walk through entries, checking offsets. */
|
||||
ret = IPT_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
check_entry_size_and_hooks,
|
||||
newinfo,
|
||||
entry0,
|
||||
entry0 + size,
|
||||
hook_entries, underflows, valid_hooks, &i);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
ret = check_entry_size_and_hooks(iter, newinfo, entry0,
|
||||
entry0 + repl->size, repl->hook_entry, repl->underflow,
|
||||
repl->valid_hooks);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
++i;
|
||||
}
|
||||
|
||||
if (i != number) {
|
||||
if (i != repl->num_entries) {
|
||||
duprintf("translate_table: %u not %u entries\n",
|
||||
i, number);
|
||||
i, repl->num_entries);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Check hooks all assigned */
|
||||
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
|
||||
/* Only hooks which are valid */
|
||||
if (!(valid_hooks & (1 << i)))
|
||||
if (!(repl->valid_hooks & (1 << i)))
|
||||
continue;
|
||||
if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
|
||||
duprintf("Invalid hook entry %u %u\n",
|
||||
i, hook_entries[i]);
|
||||
i, repl->hook_entry[i]);
|
||||
return -EINVAL;
|
||||
}
|
||||
if (newinfo->underflow[i] == 0xFFFFFFFF) {
|
||||
duprintf("Invalid underflow %u %u\n",
|
||||
i, underflows[i]);
|
||||
i, repl->underflow[i]);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
if (!mark_source_chains(newinfo, valid_hooks, entry0))
|
||||
if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
|
||||
return -ELOOP;
|
||||
|
||||
/* Finally, each sanity check must pass */
|
||||
i = 0;
|
||||
ret = IPT_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
find_check_entry, net, name, size, &i);
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
ret = find_check_entry(iter, net, repl->name, repl->size);
|
||||
if (ret != 0)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
|
||||
if (ret != 0) {
|
||||
IPT_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
cleanup_entry, net, &i);
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
if (i-- == 0)
|
||||
break;
|
||||
cleanup_entry(iter, net);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -896,33 +896,11 @@ translate_table(struct net *net,
|
|||
return ret;
|
||||
}
|
||||
|
||||
/* Gets counters. */
|
||||
static inline int
|
||||
add_entry_to_counter(const struct ipt_entry *e,
|
||||
struct xt_counters total[],
|
||||
unsigned int *i)
|
||||
{
|
||||
ADD_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int
|
||||
set_entry_to_counter(const struct ipt_entry *e,
|
||||
struct ipt_counters total[],
|
||||
unsigned int *i)
|
||||
{
|
||||
SET_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
get_counters(const struct xt_table_info *t,
|
||||
struct xt_counters counters[])
|
||||
{
|
||||
struct ipt_entry *iter;
|
||||
unsigned int cpu;
|
||||
unsigned int i;
|
||||
unsigned int curcpu;
|
||||
|
@ -938,22 +916,22 @@ get_counters(const struct xt_table_info *t,
|
|||
curcpu = smp_processor_id();
|
||||
|
||||
i = 0;
|
||||
IPT_ENTRY_ITERATE(t->entries[curcpu],
|
||||
t->size,
|
||||
set_entry_to_counter,
|
||||
counters,
|
||||
&i);
|
||||
xt_entry_foreach(iter, t->entries[curcpu], t->size) {
|
||||
SET_COUNTER(counters[i], iter->counters.bcnt,
|
||||
iter->counters.pcnt);
|
||||
++i;
|
||||
}
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (cpu == curcpu)
|
||||
continue;
|
||||
i = 0;
|
||||
xt_info_wrlock(cpu);
|
||||
IPT_ENTRY_ITERATE(t->entries[cpu],
|
||||
t->size,
|
||||
add_entry_to_counter,
|
||||
counters,
|
||||
&i);
|
||||
xt_entry_foreach(iter, t->entries[cpu], t->size) {
|
||||
ADD_COUNTER(counters[i], iter->counters.bcnt,
|
||||
iter->counters.pcnt);
|
||||
++i; /* macro does multi eval of i */
|
||||
}
|
||||
xt_info_wrunlock(cpu);
|
||||
}
|
||||
local_bh_enable();
|
||||
|
@ -1072,24 +1050,19 @@ static int compat_standard_to_user(void __user *dst, const void *src)
|
|||
return copy_to_user(dst, &cv, sizeof(cv)) ? -EFAULT : 0;
|
||||
}
|
||||
|
||||
static inline int
|
||||
compat_calc_match(const struct ipt_entry_match *m, int *size)
|
||||
{
|
||||
*size += xt_compat_match_offset(m->u.kernel.match);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int compat_calc_entry(const struct ipt_entry *e,
|
||||
const struct xt_table_info *info,
|
||||
const void *base, struct xt_table_info *newinfo)
|
||||
{
|
||||
const struct xt_entry_match *ematch;
|
||||
const struct ipt_entry_target *t;
|
||||
unsigned int entry_offset;
|
||||
int off, i, ret;
|
||||
|
||||
off = sizeof(struct ipt_entry) - sizeof(struct compat_ipt_entry);
|
||||
entry_offset = (void *)e - base;
|
||||
IPT_MATCH_ITERATE(e, compat_calc_match, &off);
|
||||
xt_ematch_foreach(ematch, e)
|
||||
off += xt_compat_match_offset(ematch->u.kernel.match);
|
||||
t = ipt_get_target_c(e);
|
||||
off += xt_compat_target_offset(t->u.kernel.target);
|
||||
newinfo->size -= off;
|
||||
|
@ -1111,7 +1084,9 @@ static int compat_calc_entry(const struct ipt_entry *e,
|
|||
static int compat_table_info(const struct xt_table_info *info,
|
||||
struct xt_table_info *newinfo)
|
||||
{
|
||||
struct ipt_entry *iter;
|
||||
void *loc_cpu_entry;
|
||||
int ret;
|
||||
|
||||
if (!newinfo || !info)
|
||||
return -EINVAL;
|
||||
|
@ -1120,9 +1095,12 @@ static int compat_table_info(const struct xt_table_info *info,
|
|||
memcpy(newinfo, info, offsetof(struct xt_table_info, entries));
|
||||
newinfo->initial_entries = 0;
|
||||
loc_cpu_entry = info->entries[raw_smp_processor_id()];
|
||||
return IPT_ENTRY_ITERATE(loc_cpu_entry, info->size,
|
||||
compat_calc_entry, info, loc_cpu_entry,
|
||||
newinfo);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, info->size) {
|
||||
ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
@ -1236,6 +1214,7 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks,
|
|||
struct xt_table_info *oldinfo;
|
||||
struct xt_counters *counters;
|
||||
void *loc_cpu_old_entry;
|
||||
struct ipt_entry *iter;
|
||||
|
||||
ret = 0;
|
||||
counters = vmalloc(num_counters * sizeof(struct xt_counters));
|
||||
|
@ -1278,8 +1257,9 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks,
|
|||
|
||||
/* Decrease module usage counts and free resource */
|
||||
loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
|
||||
IPT_ENTRY_ITERATE(loc_cpu_old_entry, oldinfo->size, cleanup_entry,
|
||||
net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_old_entry, oldinfo->size)
|
||||
cleanup_entry(iter, net);
|
||||
|
||||
xt_free_table_info(oldinfo);
|
||||
if (copy_to_user(counters_ptr, counters,
|
||||
sizeof(struct xt_counters) * num_counters) != 0)
|
||||
|
@ -1304,6 +1284,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
|
|||
struct ipt_replace tmp;
|
||||
struct xt_table_info *newinfo;
|
||||
void *loc_cpu_entry;
|
||||
struct ipt_entry *iter;
|
||||
|
||||
if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
|
||||
return -EFAULT;
|
||||
|
@ -1324,9 +1305,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
|
|||
goto free_newinfo;
|
||||
}
|
||||
|
||||
ret = translate_table(net, tmp.name, tmp.valid_hooks,
|
||||
newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
|
||||
tmp.hook_entry, tmp.underflow);
|
||||
ret = translate_table(net, newinfo, loc_cpu_entry, &tmp);
|
||||
if (ret != 0)
|
||||
goto free_newinfo;
|
||||
|
||||
|
@ -1339,25 +1318,13 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
|
|||
return 0;
|
||||
|
||||
free_newinfo_untrans:
|
||||
IPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, newinfo->size)
|
||||
cleanup_entry(iter, net);
|
||||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* We're lazy, and add to the first CPU; overflow works its fey magic
|
||||
* and everything is OK. */
|
||||
static int
|
||||
add_counter_to_entry(struct ipt_entry *e,
|
||||
const struct xt_counters addme[],
|
||||
unsigned int *i)
|
||||
{
|
||||
ADD_COUNTER(e->counters, addme[*i].bcnt, addme[*i].pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
do_add_counters(struct net *net, const void __user *user,
|
||||
unsigned int len, int compat)
|
||||
|
@ -1373,6 +1340,7 @@ do_add_counters(struct net *net, const void __user *user,
|
|||
const struct xt_table_info *private;
|
||||
int ret = 0;
|
||||
void *loc_cpu_entry;
|
||||
struct ipt_entry *iter;
|
||||
#ifdef CONFIG_COMPAT
|
||||
struct compat_xt_counters_info compat_tmp;
|
||||
|
||||
|
@ -1430,11 +1398,10 @@ do_add_counters(struct net *net, const void __user *user,
|
|||
curcpu = smp_processor_id();
|
||||
loc_cpu_entry = private->entries[curcpu];
|
||||
xt_info_wrlock(curcpu);
|
||||
IPT_ENTRY_ITERATE(loc_cpu_entry,
|
||||
private->size,
|
||||
add_counter_to_entry,
|
||||
paddc,
|
||||
&i);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, private->size) {
|
||||
ADD_COUNTER(iter->counters, paddc[i].bcnt, paddc[i].pcnt);
|
||||
++i;
|
||||
}
|
||||
xt_info_wrunlock(curcpu);
|
||||
unlock_up_free:
|
||||
local_bh_enable();
|
||||
|
@ -1462,45 +1429,40 @@ struct compat_ipt_replace {
|
|||
static int
|
||||
compat_copy_entry_to_user(struct ipt_entry *e, void __user **dstptr,
|
||||
unsigned int *size, struct xt_counters *counters,
|
||||
unsigned int *i)
|
||||
unsigned int i)
|
||||
{
|
||||
struct ipt_entry_target *t;
|
||||
struct compat_ipt_entry __user *ce;
|
||||
u_int16_t target_offset, next_offset;
|
||||
compat_uint_t origsize;
|
||||
int ret;
|
||||
const struct xt_entry_match *ematch;
|
||||
int ret = 0;
|
||||
|
||||
ret = -EFAULT;
|
||||
origsize = *size;
|
||||
ce = (struct compat_ipt_entry __user *)*dstptr;
|
||||
if (copy_to_user(ce, e, sizeof(struct ipt_entry)))
|
||||
goto out;
|
||||
|
||||
if (copy_to_user(&ce->counters, &counters[*i], sizeof(counters[*i])))
|
||||
goto out;
|
||||
if (copy_to_user(ce, e, sizeof(struct ipt_entry)) != 0 ||
|
||||
copy_to_user(&ce->counters, &counters[i],
|
||||
sizeof(counters[i])) != 0)
|
||||
return -EFAULT;
|
||||
|
||||
*dstptr += sizeof(struct compat_ipt_entry);
|
||||
*size -= sizeof(struct ipt_entry) - sizeof(struct compat_ipt_entry);
|
||||
|
||||
ret = IPT_MATCH_ITERATE(e, xt_compat_match_to_user, dstptr, size);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = xt_compat_match_to_user(ematch, dstptr, size);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
target_offset = e->target_offset - (origsize - *size);
|
||||
if (ret)
|
||||
goto out;
|
||||
t = ipt_get_target(e);
|
||||
ret = xt_compat_target_to_user(t, dstptr, size);
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = -EFAULT;
|
||||
return ret;
|
||||
next_offset = e->next_offset - (origsize - *size);
|
||||
if (put_user(target_offset, &ce->target_offset))
|
||||
goto out;
|
||||
if (put_user(next_offset, &ce->next_offset))
|
||||
goto out;
|
||||
|
||||
(*i)++;
|
||||
if (put_user(target_offset, &ce->target_offset) != 0 ||
|
||||
put_user(next_offset, &ce->next_offset) != 0)
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int
|
||||
|
@ -1508,7 +1470,7 @@ compat_find_calc_match(struct ipt_entry_match *m,
|
|||
const char *name,
|
||||
const struct ipt_ip *ip,
|
||||
unsigned int hookmask,
|
||||
int *size, unsigned int *i)
|
||||
int *size)
|
||||
{
|
||||
struct xt_match *match;
|
||||
|
||||
|
@ -1522,34 +1484,19 @@ compat_find_calc_match(struct ipt_entry_match *m,
|
|||
}
|
||||
m->u.kernel.match = match;
|
||||
*size += xt_compat_match_offset(match);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
compat_release_match(struct ipt_entry_match *m, unsigned int *i)
|
||||
{
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
|
||||
module_put(m->u.kernel.match->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
compat_release_entry(struct compat_ipt_entry *e, unsigned int *i)
|
||||
static void compat_release_entry(struct compat_ipt_entry *e)
|
||||
{
|
||||
struct ipt_entry_target *t;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
/* Cleanup all matches */
|
||||
COMPAT_IPT_MATCH_ITERATE(e, compat_release_match, NULL);
|
||||
xt_ematch_foreach(ematch, e)
|
||||
module_put(ematch->u.kernel.match->me);
|
||||
t = compat_ipt_get_target(e);
|
||||
module_put(t->u.kernel.target->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
|
@ -1560,9 +1507,9 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
|
|||
const unsigned char *limit,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows,
|
||||
unsigned int *i,
|
||||
const char *name)
|
||||
{
|
||||
struct xt_entry_match *ematch;
|
||||
struct ipt_entry_target *t;
|
||||
struct xt_target *target;
|
||||
unsigned int entry_offset;
|
||||
|
@ -1591,10 +1538,13 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
|
|||
off = sizeof(struct ipt_entry) - sizeof(struct compat_ipt_entry);
|
||||
entry_offset = (void *)e - (void *)base;
|
||||
j = 0;
|
||||
ret = COMPAT_IPT_MATCH_ITERATE(e, compat_find_calc_match, name,
|
||||
&e->ip, e->comefrom, &off, &j);
|
||||
if (ret != 0)
|
||||
goto release_matches;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = compat_find_calc_match(ematch, name,
|
||||
&e->ip, e->comefrom, &off);
|
||||
if (ret != 0)
|
||||
goto release_matches;
|
||||
++j;
|
||||
}
|
||||
|
||||
t = compat_ipt_get_target(e);
|
||||
target = try_then_request_module(xt_find_target(AF_INET,
|
||||
|
@ -1626,14 +1576,16 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
|
|||
/* Clear counters and comefrom */
|
||||
memset(&e->counters, 0, sizeof(e->counters));
|
||||
e->comefrom = 0;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
|
||||
out:
|
||||
module_put(t->u.kernel.target->me);
|
||||
release_matches:
|
||||
IPT_MATCH_ITERATE(e, compat_release_match, &j);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
module_put(ematch->u.kernel.match->me);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1647,6 +1599,7 @@ compat_copy_entry_from_user(struct compat_ipt_entry *e, void **dstptr,
|
|||
struct ipt_entry *de;
|
||||
unsigned int origsize;
|
||||
int ret, h;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
ret = 0;
|
||||
origsize = *size;
|
||||
|
@ -1657,10 +1610,11 @@ compat_copy_entry_from_user(struct compat_ipt_entry *e, void **dstptr,
|
|||
*dstptr += sizeof(struct ipt_entry);
|
||||
*size += sizeof(struct ipt_entry) - sizeof(struct compat_ipt_entry);
|
||||
|
||||
ret = COMPAT_IPT_MATCH_ITERATE(e, xt_compat_match_from_user,
|
||||
dstptr, size);
|
||||
if (ret)
|
||||
return ret;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = xt_compat_match_from_user(ematch, dstptr, size);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
de->target_offset = e->target_offset - (origsize - *size);
|
||||
t = compat_ipt_get_target(e);
|
||||
target = t->u.kernel.target;
|
||||
|
@ -1677,12 +1631,12 @@ compat_copy_entry_from_user(struct compat_ipt_entry *e, void **dstptr,
|
|||
}
|
||||
|
||||
static int
|
||||
compat_check_entry(struct ipt_entry *e, struct net *net, const char *name,
|
||||
unsigned int *i)
|
||||
compat_check_entry(struct ipt_entry *e, struct net *net, const char *name)
|
||||
{
|
||||
struct xt_entry_match *ematch;
|
||||
struct xt_mtchk_param mtpar;
|
||||
unsigned int j;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
j = 0;
|
||||
mtpar.net = net;
|
||||
|
@ -1690,19 +1644,24 @@ compat_check_entry(struct ipt_entry *e, struct net *net, const char *name,
|
|||
mtpar.entryinfo = &e->ip;
|
||||
mtpar.hook_mask = e->comefrom;
|
||||
mtpar.family = NFPROTO_IPV4;
|
||||
ret = IPT_MATCH_ITERATE(e, check_match, &mtpar, &j);
|
||||
if (ret)
|
||||
goto cleanup_matches;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = check_match(ematch, &mtpar);
|
||||
if (ret != 0)
|
||||
goto cleanup_matches;
|
||||
++j;
|
||||
}
|
||||
|
||||
ret = check_target(e, net, name);
|
||||
if (ret)
|
||||
goto cleanup_matches;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
|
||||
cleanup_matches:
|
||||
IPT_MATCH_ITERATE(e, cleanup_match, net, &j);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
cleanup_match(ematch, net);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1720,6 +1679,8 @@ translate_compat_table(struct net *net,
|
|||
unsigned int i, j;
|
||||
struct xt_table_info *newinfo, *info;
|
||||
void *pos, *entry0, *entry1;
|
||||
struct compat_ipt_entry *iter0;
|
||||
struct ipt_entry *iter1;
|
||||
unsigned int size;
|
||||
int ret;
|
||||
|
||||
|
@ -1738,13 +1699,14 @@ translate_compat_table(struct net *net,
|
|||
j = 0;
|
||||
xt_compat_lock(AF_INET);
|
||||
/* Walk through entries, checking offsets. */
|
||||
ret = COMPAT_IPT_ENTRY_ITERATE(entry0, total_size,
|
||||
check_compat_entry_size_and_hooks,
|
||||
info, &size, entry0,
|
||||
entry0 + total_size,
|
||||
hook_entries, underflows, &j, name);
|
||||
if (ret != 0)
|
||||
goto out_unlock;
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
ret = check_compat_entry_size_and_hooks(iter0, info, &size,
|
||||
entry0, entry0 + total_size, hook_entries, underflows,
|
||||
name);
|
||||
if (ret != 0)
|
||||
goto out_unlock;
|
||||
++j;
|
||||
}
|
||||
|
||||
ret = -EINVAL;
|
||||
if (j != number) {
|
||||
|
@ -1783,9 +1745,12 @@ translate_compat_table(struct net *net,
|
|||
entry1 = newinfo->entries[raw_smp_processor_id()];
|
||||
pos = entry1;
|
||||
size = total_size;
|
||||
ret = COMPAT_IPT_ENTRY_ITERATE(entry0, total_size,
|
||||
compat_copy_entry_from_user,
|
||||
&pos, &size, name, newinfo, entry1);
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
ret = compat_copy_entry_from_user(iter0, &pos,
|
||||
&size, name, newinfo, entry1);
|
||||
if (ret != 0)
|
||||
break;
|
||||
}
|
||||
xt_compat_flush_offsets(AF_INET);
|
||||
xt_compat_unlock(AF_INET);
|
||||
if (ret)
|
||||
|
@ -1796,13 +1761,32 @@ translate_compat_table(struct net *net,
|
|||
goto free_newinfo;
|
||||
|
||||
i = 0;
|
||||
ret = IPT_ENTRY_ITERATE(entry1, newinfo->size, compat_check_entry,
|
||||
net, name, &i);
|
||||
xt_entry_foreach(iter1, entry1, newinfo->size) {
|
||||
ret = compat_check_entry(iter1, net, name);
|
||||
if (ret != 0)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
if (ret) {
|
||||
/*
|
||||
* The first i matches need cleanup_entry (calls ->destroy)
|
||||
* because they had called ->check already. The other j-i
|
||||
* entries need only release.
|
||||
*/
|
||||
int skip = i;
|
||||
j -= i;
|
||||
COMPAT_IPT_ENTRY_ITERATE_CONTINUE(entry0, newinfo->size, i,
|
||||
compat_release_entry, &j);
|
||||
IPT_ENTRY_ITERATE(entry1, newinfo->size, cleanup_entry, net, &i);
|
||||
xt_entry_foreach(iter0, entry0, newinfo->size) {
|
||||
if (skip-- > 0)
|
||||
continue;
|
||||
if (j-- == 0)
|
||||
break;
|
||||
compat_release_entry(iter0);
|
||||
}
|
||||
xt_entry_foreach(iter1, entry1, newinfo->size) {
|
||||
if (i-- == 0)
|
||||
break;
|
||||
cleanup_entry(iter1, net);
|
||||
}
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
}
|
||||
|
@ -1820,7 +1804,11 @@ translate_compat_table(struct net *net,
|
|||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
out:
|
||||
COMPAT_IPT_ENTRY_ITERATE(entry0, total_size, compat_release_entry, &j);
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
compat_release_entry(iter0);
|
||||
}
|
||||
return ret;
|
||||
out_unlock:
|
||||
xt_compat_flush_offsets(AF_INET);
|
||||
|
@ -1835,6 +1823,7 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
|
|||
struct compat_ipt_replace tmp;
|
||||
struct xt_table_info *newinfo;
|
||||
void *loc_cpu_entry;
|
||||
struct ipt_entry *iter;
|
||||
|
||||
if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
|
||||
return -EFAULT;
|
||||
|
@ -1873,7 +1862,8 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
|
|||
return 0;
|
||||
|
||||
free_newinfo_untrans:
|
||||
IPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, newinfo->size)
|
||||
cleanup_entry(iter, net);
|
||||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
|
@ -1922,6 +1912,7 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
|
|||
int ret = 0;
|
||||
const void *loc_cpu_entry;
|
||||
unsigned int i = 0;
|
||||
struct ipt_entry *iter;
|
||||
|
||||
counters = alloc_counters(table);
|
||||
if (IS_ERR(counters))
|
||||
|
@ -1934,9 +1925,12 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
|
|||
loc_cpu_entry = private->entries[raw_smp_processor_id()];
|
||||
pos = userptr;
|
||||
size = total_size;
|
||||
ret = IPT_ENTRY_ITERATE(loc_cpu_entry, total_size,
|
||||
compat_copy_entry_to_user,
|
||||
&pos, &size, counters, &i);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, total_size) {
|
||||
ret = compat_copy_entry_to_user(iter, &pos,
|
||||
&size, counters, i++);
|
||||
if (ret != 0)
|
||||
break;
|
||||
}
|
||||
|
||||
vfree(counters);
|
||||
return ret;
|
||||
|
@ -2110,11 +2104,7 @@ struct xt_table *ipt_register_table(struct net *net,
|
|||
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
|
||||
memcpy(loc_cpu_entry, repl->entries, repl->size);
|
||||
|
||||
ret = translate_table(net, table->name, table->valid_hooks,
|
||||
newinfo, loc_cpu_entry, repl->size,
|
||||
repl->num_entries,
|
||||
repl->hook_entry,
|
||||
repl->underflow);
|
||||
ret = translate_table(net, newinfo, loc_cpu_entry, repl);
|
||||
if (ret != 0)
|
||||
goto out_free;
|
||||
|
||||
|
@ -2137,12 +2127,14 @@ void ipt_unregister_table(struct net *net, struct xt_table *table)
|
|||
struct xt_table_info *private;
|
||||
void *loc_cpu_entry;
|
||||
struct module *table_owner = table->me;
|
||||
struct ipt_entry *iter;
|
||||
|
||||
private = xt_unregister_table(table);
|
||||
|
||||
/* Decrease module usage counts and free resources */
|
||||
loc_cpu_entry = private->entries[raw_smp_processor_id()];
|
||||
IPT_ENTRY_ITERATE(loc_cpu_entry, private->size, cleanup_entry, net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, private->size)
|
||||
cleanup_entry(iter, net);
|
||||
if (private->number > private->initial_entries)
|
||||
module_put(table_owner);
|
||||
xt_free_table_info(private);
|
||||
|
|
|
@ -318,6 +318,7 @@ static void trace_packet(const struct sk_buff *skb,
|
|||
const void *table_base;
|
||||
const struct ip6t_entry *root;
|
||||
const char *hookname, *chainname, *comment;
|
||||
const struct ip6t_entry *iter;
|
||||
unsigned int rulenum = 0;
|
||||
|
||||
table_base = private->entries[smp_processor_id()];
|
||||
|
@ -326,10 +327,10 @@ static void trace_packet(const struct sk_buff *skb,
|
|||
hookname = chainname = hooknames[hook];
|
||||
comment = comments[NF_IP6_TRACE_COMMENT_RULE];
|
||||
|
||||
IP6T_ENTRY_ITERATE(root,
|
||||
private->size - private->hook_entry[hook],
|
||||
get_chainname_rulenum,
|
||||
e, hookname, &chainname, &comment, &rulenum);
|
||||
xt_entry_foreach(iter, root, private->size - private->hook_entry[hook])
|
||||
if (get_chainname_rulenum(iter, e, hookname,
|
||||
&chainname, &comment, &rulenum) != 0)
|
||||
break;
|
||||
|
||||
nf_log_packet(AF_INET6, hook, skb, in, out, &trace_loginfo,
|
||||
"TRACE: %s:%s:%s:%u ",
|
||||
|
@ -392,16 +393,21 @@ ip6t_do_table(struct sk_buff *skb,
|
|||
|
||||
do {
|
||||
const struct ip6t_entry_target *t;
|
||||
const struct xt_entry_match *ematch;
|
||||
|
||||
IP_NF_ASSERT(e);
|
||||
IP_NF_ASSERT(back);
|
||||
if (!ip6_packet_match(skb, indev, outdev, &e->ipv6,
|
||||
&mtpar.thoff, &mtpar.fragoff, &hotdrop) ||
|
||||
IP6T_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) {
|
||||
&mtpar.thoff, &mtpar.fragoff, &hotdrop)) {
|
||||
no_match:
|
||||
e = ip6t_next_entry(e);
|
||||
continue;
|
||||
}
|
||||
|
||||
xt_ematch_foreach(ematch, e)
|
||||
if (do_match(ematch, skb, &mtpar) != 0)
|
||||
goto no_match;
|
||||
|
||||
ADD_COUNTER(e->counters,
|
||||
ntohs(ipv6_hdr(skb)->payload_len) +
|
||||
sizeof(struct ipv6hdr), 1);
|
||||
|
@ -597,14 +603,10 @@ mark_source_chains(const struct xt_table_info *newinfo,
|
|||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
cleanup_match(struct ip6t_entry_match *m, struct net *net, unsigned int *i)
|
||||
static void cleanup_match(struct ip6t_entry_match *m, struct net *net)
|
||||
{
|
||||
struct xt_mtdtor_param par;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
|
||||
par.net = net;
|
||||
par.match = m->u.kernel.match;
|
||||
par.matchinfo = m->data;
|
||||
|
@ -612,7 +614,6 @@ cleanup_match(struct ip6t_entry_match *m, struct net *net, unsigned int *i)
|
|||
if (par.match->destroy != NULL)
|
||||
par.match->destroy(&par);
|
||||
module_put(par.match->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
|
@ -636,8 +637,7 @@ check_entry(const struct ip6t_entry *e, const char *name)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par,
|
||||
unsigned int *i)
|
||||
static int check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par)
|
||||
{
|
||||
const struct ip6t_ip6 *ipv6 = par->entryinfo;
|
||||
int ret;
|
||||
|
@ -652,13 +652,11 @@ static int check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par,
|
|||
par.match->name);
|
||||
return ret;
|
||||
}
|
||||
++*i;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
find_check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par,
|
||||
unsigned int *i)
|
||||
find_check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par)
|
||||
{
|
||||
struct xt_match *match;
|
||||
int ret;
|
||||
|
@ -672,7 +670,7 @@ find_check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par,
|
|||
}
|
||||
m->u.kernel.match = match;
|
||||
|
||||
ret = check_match(m, par, i);
|
||||
ret = check_match(m, par);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
|
@ -709,13 +707,14 @@ static int check_target(struct ip6t_entry *e, struct net *net, const char *name)
|
|||
|
||||
static int
|
||||
find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
|
||||
unsigned int size, unsigned int *i)
|
||||
unsigned int size)
|
||||
{
|
||||
struct ip6t_entry_target *t;
|
||||
struct xt_target *target;
|
||||
int ret;
|
||||
unsigned int j;
|
||||
struct xt_mtchk_param mtpar;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
ret = check_entry(e, name);
|
||||
if (ret)
|
||||
|
@ -727,9 +726,12 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
|
|||
mtpar.entryinfo = &e->ipv6;
|
||||
mtpar.hook_mask = e->comefrom;
|
||||
mtpar.family = NFPROTO_IPV6;
|
||||
ret = IP6T_MATCH_ITERATE(e, find_check_match, &mtpar, &j);
|
||||
if (ret != 0)
|
||||
goto cleanup_matches;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = find_check_match(ematch, &mtpar);
|
||||
if (ret != 0)
|
||||
goto cleanup_matches;
|
||||
++j;
|
||||
}
|
||||
|
||||
t = ip6t_get_target(e);
|
||||
target = try_then_request_module(xt_find_target(AF_INET6,
|
||||
|
@ -746,13 +748,15 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
|
|||
ret = check_target(e, net, name);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
err:
|
||||
module_put(t->u.kernel.target->me);
|
||||
cleanup_matches:
|
||||
IP6T_MATCH_ITERATE(e, cleanup_match, net, &j);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
cleanup_match(ematch, net);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -778,8 +782,7 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
|
|||
const unsigned char *limit,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows,
|
||||
unsigned int valid_hooks,
|
||||
unsigned int *i)
|
||||
unsigned int valid_hooks)
|
||||
{
|
||||
unsigned int h;
|
||||
|
||||
|
@ -816,22 +819,18 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
|
|||
/* Clear counters and comefrom */
|
||||
e->counters = ((struct xt_counters) { 0, 0 });
|
||||
e->comefrom = 0;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
cleanup_entry(struct ip6t_entry *e, struct net *net, unsigned int *i)
|
||||
static void cleanup_entry(struct ip6t_entry *e, struct net *net)
|
||||
{
|
||||
struct xt_tgdtor_param par;
|
||||
struct ip6t_entry_target *t;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
/* Cleanup all matches */
|
||||
IP6T_MATCH_ITERATE(e, cleanup_match, net, NULL);
|
||||
xt_ematch_foreach(ematch, e)
|
||||
cleanup_match(ematch, net);
|
||||
t = ip6t_get_target(e);
|
||||
|
||||
par.net = net;
|
||||
|
@ -841,27 +840,20 @@ cleanup_entry(struct ip6t_entry *e, struct net *net, unsigned int *i)
|
|||
if (par.target->destroy != NULL)
|
||||
par.target->destroy(&par);
|
||||
module_put(par.target->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Checks and translates the user-supplied table segment (held in
|
||||
newinfo) */
|
||||
static int
|
||||
translate_table(struct net *net,
|
||||
const char *name,
|
||||
unsigned int valid_hooks,
|
||||
struct xt_table_info *newinfo,
|
||||
void *entry0,
|
||||
unsigned int size,
|
||||
unsigned int number,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows)
|
||||
translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
|
||||
const struct ip6t_replace *repl)
|
||||
{
|
||||
struct ip6t_entry *iter;
|
||||
unsigned int i;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
newinfo->size = size;
|
||||
newinfo->number = number;
|
||||
newinfo->size = repl->size;
|
||||
newinfo->number = repl->num_entries;
|
||||
|
||||
/* Init all hooks to impossible value. */
|
||||
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
|
||||
|
@ -872,49 +864,56 @@ translate_table(struct net *net,
|
|||
duprintf("translate_table: size %u\n", newinfo->size);
|
||||
i = 0;
|
||||
/* Walk through entries, checking offsets. */
|
||||
ret = IP6T_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
check_entry_size_and_hooks,
|
||||
newinfo,
|
||||
entry0,
|
||||
entry0 + size,
|
||||
hook_entries, underflows, valid_hooks, &i);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
ret = check_entry_size_and_hooks(iter, newinfo, entry0,
|
||||
entry0 + repl->size, repl->hook_entry, repl->underflow,
|
||||
repl->valid_hooks);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
++i;
|
||||
}
|
||||
|
||||
if (i != number) {
|
||||
if (i != repl->num_entries) {
|
||||
duprintf("translate_table: %u not %u entries\n",
|
||||
i, number);
|
||||
i, repl->num_entries);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Check hooks all assigned */
|
||||
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
|
||||
/* Only hooks which are valid */
|
||||
if (!(valid_hooks & (1 << i)))
|
||||
if (!(repl->valid_hooks & (1 << i)))
|
||||
continue;
|
||||
if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
|
||||
duprintf("Invalid hook entry %u %u\n",
|
||||
i, hook_entries[i]);
|
||||
i, repl->hook_entry[i]);
|
||||
return -EINVAL;
|
||||
}
|
||||
if (newinfo->underflow[i] == 0xFFFFFFFF) {
|
||||
duprintf("Invalid underflow %u %u\n",
|
||||
i, underflows[i]);
|
||||
i, repl->underflow[i]);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
if (!mark_source_chains(newinfo, valid_hooks, entry0))
|
||||
if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
|
||||
return -ELOOP;
|
||||
|
||||
/* Finally, each sanity check must pass */
|
||||
i = 0;
|
||||
ret = IP6T_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
find_check_entry, net, name, size, &i);
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
ret = find_check_entry(iter, net, repl->name, repl->size);
|
||||
if (ret != 0)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
|
||||
if (ret != 0) {
|
||||
IP6T_ENTRY_ITERATE(entry0, newinfo->size,
|
||||
cleanup_entry, net, &i);
|
||||
xt_entry_foreach(iter, entry0, newinfo->size) {
|
||||
if (i-- == 0)
|
||||
break;
|
||||
cleanup_entry(iter, net);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -927,33 +926,11 @@ translate_table(struct net *net,
|
|||
return ret;
|
||||
}
|
||||
|
||||
/* Gets counters. */
|
||||
static inline int
|
||||
add_entry_to_counter(const struct ip6t_entry *e,
|
||||
struct xt_counters total[],
|
||||
unsigned int *i)
|
||||
{
|
||||
ADD_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int
|
||||
set_entry_to_counter(const struct ip6t_entry *e,
|
||||
struct ip6t_counters total[],
|
||||
unsigned int *i)
|
||||
{
|
||||
SET_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
get_counters(const struct xt_table_info *t,
|
||||
struct xt_counters counters[])
|
||||
{
|
||||
struct ip6t_entry *iter;
|
||||
unsigned int cpu;
|
||||
unsigned int i;
|
||||
unsigned int curcpu;
|
||||
|
@ -969,22 +946,22 @@ get_counters(const struct xt_table_info *t,
|
|||
curcpu = smp_processor_id();
|
||||
|
||||
i = 0;
|
||||
IP6T_ENTRY_ITERATE(t->entries[curcpu],
|
||||
t->size,
|
||||
set_entry_to_counter,
|
||||
counters,
|
||||
&i);
|
||||
xt_entry_foreach(iter, t->entries[curcpu], t->size) {
|
||||
SET_COUNTER(counters[i], iter->counters.bcnt,
|
||||
iter->counters.pcnt);
|
||||
++i;
|
||||
}
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (cpu == curcpu)
|
||||
continue;
|
||||
i = 0;
|
||||
xt_info_wrlock(cpu);
|
||||
IP6T_ENTRY_ITERATE(t->entries[cpu],
|
||||
t->size,
|
||||
add_entry_to_counter,
|
||||
counters,
|
||||
&i);
|
||||
xt_entry_foreach(iter, t->entries[cpu], t->size) {
|
||||
ADD_COUNTER(counters[i], iter->counters.bcnt,
|
||||
iter->counters.pcnt);
|
||||
++i;
|
||||
}
|
||||
xt_info_wrunlock(cpu);
|
||||
}
|
||||
local_bh_enable();
|
||||
|
@ -1103,24 +1080,19 @@ static int compat_standard_to_user(void __user *dst, const void *src)
|
|||
return copy_to_user(dst, &cv, sizeof(cv)) ? -EFAULT : 0;
|
||||
}
|
||||
|
||||
static inline int
|
||||
compat_calc_match(const struct ip6t_entry_match *m, int *size)
|
||||
{
|
||||
*size += xt_compat_match_offset(m->u.kernel.match);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int compat_calc_entry(const struct ip6t_entry *e,
|
||||
const struct xt_table_info *info,
|
||||
const void *base, struct xt_table_info *newinfo)
|
||||
{
|
||||
const struct xt_entry_match *ematch;
|
||||
const struct ip6t_entry_target *t;
|
||||
unsigned int entry_offset;
|
||||
int off, i, ret;
|
||||
|
||||
off = sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
|
||||
entry_offset = (void *)e - base;
|
||||
IP6T_MATCH_ITERATE(e, compat_calc_match, &off);
|
||||
xt_ematch_foreach(ematch, e)
|
||||
off += xt_compat_match_offset(ematch->u.kernel.match);
|
||||
t = ip6t_get_target_c(e);
|
||||
off += xt_compat_target_offset(t->u.kernel.target);
|
||||
newinfo->size -= off;
|
||||
|
@ -1142,7 +1114,9 @@ static int compat_calc_entry(const struct ip6t_entry *e,
|
|||
static int compat_table_info(const struct xt_table_info *info,
|
||||
struct xt_table_info *newinfo)
|
||||
{
|
||||
struct ip6t_entry *iter;
|
||||
void *loc_cpu_entry;
|
||||
int ret;
|
||||
|
||||
if (!newinfo || !info)
|
||||
return -EINVAL;
|
||||
|
@ -1151,9 +1125,12 @@ static int compat_table_info(const struct xt_table_info *info,
|
|||
memcpy(newinfo, info, offsetof(struct xt_table_info, entries));
|
||||
newinfo->initial_entries = 0;
|
||||
loc_cpu_entry = info->entries[raw_smp_processor_id()];
|
||||
return IP6T_ENTRY_ITERATE(loc_cpu_entry, info->size,
|
||||
compat_calc_entry, info, loc_cpu_entry,
|
||||
newinfo);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, info->size) {
|
||||
ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
@ -1267,6 +1244,7 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks,
|
|||
struct xt_table_info *oldinfo;
|
||||
struct xt_counters *counters;
|
||||
const void *loc_cpu_old_entry;
|
||||
struct ip6t_entry *iter;
|
||||
|
||||
ret = 0;
|
||||
counters = vmalloc_node(num_counters * sizeof(struct xt_counters),
|
||||
|
@ -1310,8 +1288,9 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks,
|
|||
|
||||
/* Decrease module usage counts and free resource */
|
||||
loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
|
||||
IP6T_ENTRY_ITERATE(loc_cpu_old_entry, oldinfo->size, cleanup_entry,
|
||||
net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_old_entry, oldinfo->size)
|
||||
cleanup_entry(iter, net);
|
||||
|
||||
xt_free_table_info(oldinfo);
|
||||
if (copy_to_user(counters_ptr, counters,
|
||||
sizeof(struct xt_counters) * num_counters) != 0)
|
||||
|
@ -1336,6 +1315,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
|
|||
struct ip6t_replace tmp;
|
||||
struct xt_table_info *newinfo;
|
||||
void *loc_cpu_entry;
|
||||
struct ip6t_entry *iter;
|
||||
|
||||
if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
|
||||
return -EFAULT;
|
||||
|
@ -1356,9 +1336,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
|
|||
goto free_newinfo;
|
||||
}
|
||||
|
||||
ret = translate_table(net, tmp.name, tmp.valid_hooks,
|
||||
newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
|
||||
tmp.hook_entry, tmp.underflow);
|
||||
ret = translate_table(net, newinfo, loc_cpu_entry, &tmp);
|
||||
if (ret != 0)
|
||||
goto free_newinfo;
|
||||
|
||||
|
@ -1371,25 +1349,13 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
|
|||
return 0;
|
||||
|
||||
free_newinfo_untrans:
|
||||
IP6T_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, newinfo->size)
|
||||
cleanup_entry(iter, net);
|
||||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* We're lazy, and add to the first CPU; overflow works its fey magic
|
||||
* and everything is OK. */
|
||||
static int
|
||||
add_counter_to_entry(struct ip6t_entry *e,
|
||||
const struct xt_counters addme[],
|
||||
unsigned int *i)
|
||||
{
|
||||
ADD_COUNTER(e->counters, addme[*i].bcnt, addme[*i].pcnt);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
do_add_counters(struct net *net, const void __user *user, unsigned int len,
|
||||
int compat)
|
||||
|
@ -1405,6 +1371,7 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
|
|||
const struct xt_table_info *private;
|
||||
int ret = 0;
|
||||
const void *loc_cpu_entry;
|
||||
struct ip6t_entry *iter;
|
||||
#ifdef CONFIG_COMPAT
|
||||
struct compat_xt_counters_info compat_tmp;
|
||||
|
||||
|
@ -1463,11 +1430,10 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
|
|||
curcpu = smp_processor_id();
|
||||
xt_info_wrlock(curcpu);
|
||||
loc_cpu_entry = private->entries[curcpu];
|
||||
IP6T_ENTRY_ITERATE(loc_cpu_entry,
|
||||
private->size,
|
||||
add_counter_to_entry,
|
||||
paddc,
|
||||
&i);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, private->size) {
|
||||
ADD_COUNTER(iter->counters, paddc[i].bcnt, paddc[i].pcnt);
|
||||
++i;
|
||||
}
|
||||
xt_info_wrunlock(curcpu);
|
||||
|
||||
unlock_up_free:
|
||||
|
@ -1496,45 +1462,40 @@ struct compat_ip6t_replace {
|
|||
static int
|
||||
compat_copy_entry_to_user(struct ip6t_entry *e, void __user **dstptr,
|
||||
unsigned int *size, struct xt_counters *counters,
|
||||
unsigned int *i)
|
||||
unsigned int i)
|
||||
{
|
||||
struct ip6t_entry_target *t;
|
||||
struct compat_ip6t_entry __user *ce;
|
||||
u_int16_t target_offset, next_offset;
|
||||
compat_uint_t origsize;
|
||||
int ret;
|
||||
const struct xt_entry_match *ematch;
|
||||
int ret = 0;
|
||||
|
||||
ret = -EFAULT;
|
||||
origsize = *size;
|
||||
ce = (struct compat_ip6t_entry __user *)*dstptr;
|
||||
if (copy_to_user(ce, e, sizeof(struct ip6t_entry)))
|
||||
goto out;
|
||||
|
||||
if (copy_to_user(&ce->counters, &counters[*i], sizeof(counters[*i])))
|
||||
goto out;
|
||||
if (copy_to_user(ce, e, sizeof(struct ip6t_entry)) != 0 ||
|
||||
copy_to_user(&ce->counters, &counters[i],
|
||||
sizeof(counters[i])) != 0)
|
||||
return -EFAULT;
|
||||
|
||||
*dstptr += sizeof(struct compat_ip6t_entry);
|
||||
*size -= sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
|
||||
|
||||
ret = IP6T_MATCH_ITERATE(e, xt_compat_match_to_user, dstptr, size);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = xt_compat_match_to_user(ematch, dstptr, size);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
target_offset = e->target_offset - (origsize - *size);
|
||||
if (ret)
|
||||
goto out;
|
||||
t = ip6t_get_target(e);
|
||||
ret = xt_compat_target_to_user(t, dstptr, size);
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = -EFAULT;
|
||||
return ret;
|
||||
next_offset = e->next_offset - (origsize - *size);
|
||||
if (put_user(target_offset, &ce->target_offset))
|
||||
goto out;
|
||||
if (put_user(next_offset, &ce->next_offset))
|
||||
goto out;
|
||||
|
||||
(*i)++;
|
||||
if (put_user(target_offset, &ce->target_offset) != 0 ||
|
||||
put_user(next_offset, &ce->next_offset) != 0)
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int
|
||||
|
@ -1542,7 +1503,7 @@ compat_find_calc_match(struct ip6t_entry_match *m,
|
|||
const char *name,
|
||||
const struct ip6t_ip6 *ipv6,
|
||||
unsigned int hookmask,
|
||||
int *size, unsigned int *i)
|
||||
int *size)
|
||||
{
|
||||
struct xt_match *match;
|
||||
|
||||
|
@ -1556,34 +1517,19 @@ compat_find_calc_match(struct ip6t_entry_match *m,
|
|||
}
|
||||
m->u.kernel.match = match;
|
||||
*size += xt_compat_match_offset(match);
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
compat_release_match(struct ip6t_entry_match *m, unsigned int *i)
|
||||
{
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
|
||||
module_put(m->u.kernel.match->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
compat_release_entry(struct compat_ip6t_entry *e, unsigned int *i)
|
||||
static void compat_release_entry(struct compat_ip6t_entry *e)
|
||||
{
|
||||
struct ip6t_entry_target *t;
|
||||
|
||||
if (i && (*i)-- == 0)
|
||||
return 1;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
/* Cleanup all matches */
|
||||
COMPAT_IP6T_MATCH_ITERATE(e, compat_release_match, NULL);
|
||||
xt_ematch_foreach(ematch, e)
|
||||
module_put(ematch->u.kernel.match->me);
|
||||
t = compat_ip6t_get_target(e);
|
||||
module_put(t->u.kernel.target->me);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
|
@ -1594,9 +1540,9 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
|
|||
const unsigned char *limit,
|
||||
const unsigned int *hook_entries,
|
||||
const unsigned int *underflows,
|
||||
unsigned int *i,
|
||||
const char *name)
|
||||
{
|
||||
struct xt_entry_match *ematch;
|
||||
struct ip6t_entry_target *t;
|
||||
struct xt_target *target;
|
||||
unsigned int entry_offset;
|
||||
|
@ -1625,10 +1571,13 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
|
|||
off = sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
|
||||
entry_offset = (void *)e - (void *)base;
|
||||
j = 0;
|
||||
ret = COMPAT_IP6T_MATCH_ITERATE(e, compat_find_calc_match, name,
|
||||
&e->ipv6, e->comefrom, &off, &j);
|
||||
if (ret != 0)
|
||||
goto release_matches;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = compat_find_calc_match(ematch, name,
|
||||
&e->ipv6, e->comefrom, &off);
|
||||
if (ret != 0)
|
||||
goto release_matches;
|
||||
++j;
|
||||
}
|
||||
|
||||
t = compat_ip6t_get_target(e);
|
||||
target = try_then_request_module(xt_find_target(AF_INET6,
|
||||
|
@ -1660,14 +1609,16 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
|
|||
/* Clear counters and comefrom */
|
||||
memset(&e->counters, 0, sizeof(e->counters));
|
||||
e->comefrom = 0;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
|
||||
out:
|
||||
module_put(t->u.kernel.target->me);
|
||||
release_matches:
|
||||
IP6T_MATCH_ITERATE(e, compat_release_match, &j);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
module_put(ematch->u.kernel.match->me);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1681,6 +1632,7 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
|
|||
struct ip6t_entry *de;
|
||||
unsigned int origsize;
|
||||
int ret, h;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
ret = 0;
|
||||
origsize = *size;
|
||||
|
@ -1691,10 +1643,11 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
|
|||
*dstptr += sizeof(struct ip6t_entry);
|
||||
*size += sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
|
||||
|
||||
ret = COMPAT_IP6T_MATCH_ITERATE(e, xt_compat_match_from_user,
|
||||
dstptr, size);
|
||||
if (ret)
|
||||
return ret;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = xt_compat_match_from_user(ematch, dstptr, size);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
}
|
||||
de->target_offset = e->target_offset - (origsize - *size);
|
||||
t = compat_ip6t_get_target(e);
|
||||
target = t->u.kernel.target;
|
||||
|
@ -1711,11 +1664,12 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
|
|||
}
|
||||
|
||||
static int compat_check_entry(struct ip6t_entry *e, struct net *net,
|
||||
const char *name, unsigned int *i)
|
||||
const char *name)
|
||||
{
|
||||
unsigned int j;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
struct xt_mtchk_param mtpar;
|
||||
struct xt_entry_match *ematch;
|
||||
|
||||
j = 0;
|
||||
mtpar.net = net;
|
||||
|
@ -1723,19 +1677,24 @@ static int compat_check_entry(struct ip6t_entry *e, struct net *net,
|
|||
mtpar.entryinfo = &e->ipv6;
|
||||
mtpar.hook_mask = e->comefrom;
|
||||
mtpar.family = NFPROTO_IPV6;
|
||||
ret = IP6T_MATCH_ITERATE(e, check_match, &mtpar, &j);
|
||||
if (ret)
|
||||
goto cleanup_matches;
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
ret = check_match(ematch, &mtpar);
|
||||
if (ret != 0)
|
||||
goto cleanup_matches;
|
||||
++j;
|
||||
}
|
||||
|
||||
ret = check_target(e, net, name);
|
||||
if (ret)
|
||||
goto cleanup_matches;
|
||||
|
||||
(*i)++;
|
||||
return 0;
|
||||
|
||||
cleanup_matches:
|
||||
IP6T_MATCH_ITERATE(e, cleanup_match, net, &j);
|
||||
xt_ematch_foreach(ematch, e) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
cleanup_match(ematch, net);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1753,8 +1712,10 @@ translate_compat_table(struct net *net,
|
|||
unsigned int i, j;
|
||||
struct xt_table_info *newinfo, *info;
|
||||
void *pos, *entry0, *entry1;
|
||||
struct compat_ip6t_entry *iter0;
|
||||
struct ip6t_entry *iter1;
|
||||
unsigned int size;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
info = *pinfo;
|
||||
entry0 = *pentry0;
|
||||
|
@ -1771,13 +1732,14 @@ translate_compat_table(struct net *net,
|
|||
j = 0;
|
||||
xt_compat_lock(AF_INET6);
|
||||
/* Walk through entries, checking offsets. */
|
||||
ret = COMPAT_IP6T_ENTRY_ITERATE(entry0, total_size,
|
||||
check_compat_entry_size_and_hooks,
|
||||
info, &size, entry0,
|
||||
entry0 + total_size,
|
||||
hook_entries, underflows, &j, name);
|
||||
if (ret != 0)
|
||||
goto out_unlock;
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
ret = check_compat_entry_size_and_hooks(iter0, info, &size,
|
||||
entry0, entry0 + total_size, hook_entries, underflows,
|
||||
name);
|
||||
if (ret != 0)
|
||||
goto out_unlock;
|
||||
++j;
|
||||
}
|
||||
|
||||
ret = -EINVAL;
|
||||
if (j != number) {
|
||||
|
@ -1816,9 +1778,12 @@ translate_compat_table(struct net *net,
|
|||
entry1 = newinfo->entries[raw_smp_processor_id()];
|
||||
pos = entry1;
|
||||
size = total_size;
|
||||
ret = COMPAT_IP6T_ENTRY_ITERATE(entry0, total_size,
|
||||
compat_copy_entry_from_user,
|
||||
&pos, &size, name, newinfo, entry1);
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
ret = compat_copy_entry_from_user(iter0, &pos,
|
||||
&size, name, newinfo, entry1);
|
||||
if (ret != 0)
|
||||
break;
|
||||
}
|
||||
xt_compat_flush_offsets(AF_INET6);
|
||||
xt_compat_unlock(AF_INET6);
|
||||
if (ret)
|
||||
|
@ -1829,13 +1794,32 @@ translate_compat_table(struct net *net,
|
|||
goto free_newinfo;
|
||||
|
||||
i = 0;
|
||||
ret = IP6T_ENTRY_ITERATE(entry1, newinfo->size, compat_check_entry,
|
||||
net, name, &i);
|
||||
xt_entry_foreach(iter1, entry1, newinfo->size) {
|
||||
ret = compat_check_entry(iter1, net, name);
|
||||
if (ret != 0)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
if (ret) {
|
||||
/*
|
||||
* The first i matches need cleanup_entry (calls ->destroy)
|
||||
* because they had called ->check already. The other j-i
|
||||
* entries need only release.
|
||||
*/
|
||||
int skip = i;
|
||||
j -= i;
|
||||
COMPAT_IP6T_ENTRY_ITERATE_CONTINUE(entry0, newinfo->size, i,
|
||||
compat_release_entry, &j);
|
||||
IP6T_ENTRY_ITERATE(entry1, newinfo->size, cleanup_entry, net, &i);
|
||||
xt_entry_foreach(iter0, entry0, newinfo->size) {
|
||||
if (skip-- > 0)
|
||||
continue;
|
||||
if (j-- == 0)
|
||||
break;
|
||||
compat_release_entry(iter0);
|
||||
}
|
||||
xt_entry_foreach(iter1, entry1, newinfo->size) {
|
||||
if (i-- == 0)
|
||||
break;
|
||||
cleanup_entry(iter1, net);
|
||||
}
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
}
|
||||
|
@ -1853,7 +1837,11 @@ translate_compat_table(struct net *net,
|
|||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
out:
|
||||
COMPAT_IP6T_ENTRY_ITERATE(entry0, total_size, compat_release_entry, &j);
|
||||
xt_entry_foreach(iter0, entry0, total_size) {
|
||||
if (j-- == 0)
|
||||
break;
|
||||
compat_release_entry(iter0);
|
||||
}
|
||||
return ret;
|
||||
out_unlock:
|
||||
xt_compat_flush_offsets(AF_INET6);
|
||||
|
@ -1868,6 +1856,7 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
|
|||
struct compat_ip6t_replace tmp;
|
||||
struct xt_table_info *newinfo;
|
||||
void *loc_cpu_entry;
|
||||
struct ip6t_entry *iter;
|
||||
|
||||
if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
|
||||
return -EFAULT;
|
||||
|
@ -1906,7 +1895,8 @@ compat_do_replace(struct net *net, void __user *user, unsigned int len)
|
|||
return 0;
|
||||
|
||||
free_newinfo_untrans:
|
||||
IP6T_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, newinfo->size)
|
||||
cleanup_entry(iter, net);
|
||||
free_newinfo:
|
||||
xt_free_table_info(newinfo);
|
||||
return ret;
|
||||
|
@ -1955,6 +1945,7 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
|
|||
int ret = 0;
|
||||
const void *loc_cpu_entry;
|
||||
unsigned int i = 0;
|
||||
struct ip6t_entry *iter;
|
||||
|
||||
counters = alloc_counters(table);
|
||||
if (IS_ERR(counters))
|
||||
|
@ -1967,9 +1958,12 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
|
|||
loc_cpu_entry = private->entries[raw_smp_processor_id()];
|
||||
pos = userptr;
|
||||
size = total_size;
|
||||
ret = IP6T_ENTRY_ITERATE(loc_cpu_entry, total_size,
|
||||
compat_copy_entry_to_user,
|
||||
&pos, &size, counters, &i);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, total_size) {
|
||||
ret = compat_copy_entry_to_user(iter, &pos,
|
||||
&size, counters, i++);
|
||||
if (ret != 0)
|
||||
break;
|
||||
}
|
||||
|
||||
vfree(counters);
|
||||
return ret;
|
||||
|
@ -2143,11 +2137,7 @@ struct xt_table *ip6t_register_table(struct net *net,
|
|||
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
|
||||
memcpy(loc_cpu_entry, repl->entries, repl->size);
|
||||
|
||||
ret = translate_table(net, table->name, table->valid_hooks,
|
||||
newinfo, loc_cpu_entry, repl->size,
|
||||
repl->num_entries,
|
||||
repl->hook_entry,
|
||||
repl->underflow);
|
||||
ret = translate_table(net, newinfo, loc_cpu_entry, repl);
|
||||
if (ret != 0)
|
||||
goto out_free;
|
||||
|
||||
|
@ -2169,12 +2159,14 @@ void ip6t_unregister_table(struct net *net, struct xt_table *table)
|
|||
struct xt_table_info *private;
|
||||
void *loc_cpu_entry;
|
||||
struct module *table_owner = table->me;
|
||||
struct ip6t_entry *iter;
|
||||
|
||||
private = xt_unregister_table(table);
|
||||
|
||||
/* Decrease module usage counts and free resources */
|
||||
loc_cpu_entry = private->entries[raw_smp_processor_id()];
|
||||
IP6T_ENTRY_ITERATE(loc_cpu_entry, private->size, cleanup_entry, net, NULL);
|
||||
xt_entry_foreach(iter, loc_cpu_entry, private->size)
|
||||
cleanup_entry(iter, net);
|
||||
if (private->number > private->initial_entries)
|
||||
module_put(table_owner);
|
||||
xt_free_table_info(private);
|
||||
|
|
|
@ -469,7 +469,7 @@ nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
|
|||
|
||||
/* all original skbs are linked into the NFCT_FRAG6_CB(head).orig */
|
||||
fp = skb_shinfo(head)->frag_list;
|
||||
if (NFCT_FRAG6_CB(fp)->orig == NULL)
|
||||
if (fp && NFCT_FRAG6_CB(fp)->orig == NULL)
|
||||
/* at above code, head skb is divided into two skbs. */
|
||||
fp = fp->next;
|
||||
|
||||
|
@ -595,12 +595,6 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user)
|
|||
hdr = ipv6_hdr(clone);
|
||||
fhdr = (struct frag_hdr *)skb_transport_header(clone);
|
||||
|
||||
if (!(fhdr->frag_off & htons(0xFFF9))) {
|
||||
pr_debug("Invalid fragment offset\n");
|
||||
/* It is not a fragmented frame */
|
||||
goto ret_orig;
|
||||
}
|
||||
|
||||
if (atomic_read(&nf_init_frags.mem) > nf_init_frags.high_thresh)
|
||||
nf_ct_frag6_evictor();
|
||||
|
||||
|
|
|
@ -239,6 +239,7 @@ static bool tcpmss_tg4_check(const struct xt_tgchk_param *par)
|
|||
{
|
||||
const struct xt_tcpmss_info *info = par->targinfo;
|
||||
const struct ipt_entry *e = par->entryinfo;
|
||||
const struct xt_entry_match *ematch;
|
||||
|
||||
if (info->mss == XT_TCPMSS_CLAMP_PMTU &&
|
||||
(par->hook_mask & ~((1 << NF_INET_FORWARD) |
|
||||
|
@ -248,8 +249,9 @@ static bool tcpmss_tg4_check(const struct xt_tgchk_param *par)
|
|||
"FORWARD, OUTPUT and POSTROUTING hooks\n");
|
||||
return false;
|
||||
}
|
||||
if (IPT_MATCH_ITERATE(e, find_syn_match))
|
||||
return true;
|
||||
xt_ematch_foreach(ematch, e)
|
||||
if (find_syn_match(ematch))
|
||||
return true;
|
||||
printk("xt_TCPMSS: Only works on TCP SYN packets\n");
|
||||
return false;
|
||||
}
|
||||
|
@ -259,6 +261,7 @@ static bool tcpmss_tg6_check(const struct xt_tgchk_param *par)
|
|||
{
|
||||
const struct xt_tcpmss_info *info = par->targinfo;
|
||||
const struct ip6t_entry *e = par->entryinfo;
|
||||
const struct xt_entry_match *ematch;
|
||||
|
||||
if (info->mss == XT_TCPMSS_CLAMP_PMTU &&
|
||||
(par->hook_mask & ~((1 << NF_INET_FORWARD) |
|
||||
|
@ -268,8 +271,9 @@ static bool tcpmss_tg6_check(const struct xt_tgchk_param *par)
|
|||
"FORWARD, OUTPUT and POSTROUTING hooks\n");
|
||||
return false;
|
||||
}
|
||||
if (IP6T_MATCH_ITERATE(e, find_syn_match))
|
||||
return true;
|
||||
xt_ematch_foreach(ematch, e)
|
||||
if (find_syn_match(ematch))
|
||||
return true;
|
||||
printk("xt_TCPMSS: Only works on TCP SYN packets\n");
|
||||
return false;
|
||||
}
|
||||
|
|
|
@ -177,10 +177,10 @@ recent_entry_init(struct recent_table *t, const union nf_inet_addr *addr,
|
|||
|
||||
static void recent_entry_update(struct recent_table *t, struct recent_entry *e)
|
||||
{
|
||||
e->index %= ip_pkt_list_tot;
|
||||
e->stamps[e->index++] = jiffies;
|
||||
if (e->index > e->nstamps)
|
||||
e->nstamps = e->index;
|
||||
e->index %= ip_pkt_list_tot;
|
||||
list_move_tail(&e->lru_list, &t->lru_list);
|
||||
}
|
||||
|
||||
|
@ -267,7 +267,7 @@ recent_mt(const struct sk_buff *skb, const struct xt_match_param *par)
|
|||
for (i = 0; i < e->nstamps; i++) {
|
||||
if (info->seconds && time_after(time, e->stamps[i]))
|
||||
continue;
|
||||
if (++hits >= info->hit_count) {
|
||||
if (info->hit_count && ++hits >= info->hit_count) {
|
||||
ret = !ret;
|
||||
break;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue