diff options
Diffstat (limited to 'net/bridge/netfilter/ebtables.c')
| -rw-r--r-- | net/bridge/netfilter/ebtables.c | 56 |
1 files changed, 21 insertions, 35 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index f0865fd1e3ec..59ca00e40dec 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -14,8 +14,7 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ - - +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kmod.h> #include <linux/module.h> #include <linux/vmalloc.h> @@ -87,7 +86,7 @@ static struct xt_target ebt_standard_target = { static inline int ebt_do_watcher(const struct ebt_entry_watcher *w, struct sk_buff *skb, - struct xt_target_param *par) + struct xt_action_param *par) { par->target = w->u.watcher; par->targinfo = w->data; @@ -96,8 +95,9 @@ ebt_do_watcher(const struct ebt_entry_watcher *w, struct sk_buff *skb, return 0; } -static inline int ebt_do_match (struct ebt_entry_match *m, - const struct sk_buff *skb, struct xt_match_param *par) +static inline int +ebt_do_match(struct ebt_entry_match *m, const struct sk_buff *skb, + struct xt_action_param *par) { par->match = m->u.match; par->matchinfo = m->data; @@ -186,15 +186,13 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, struct ebt_entries *chaininfo; const char *base; const struct ebt_table_info *private; - bool hotdrop = false; - struct xt_match_param mtpar; - struct xt_target_param tgpar; + struct xt_action_param acpar; - mtpar.family = tgpar.family = NFPROTO_BRIDGE; - mtpar.in = tgpar.in = in; - mtpar.out = tgpar.out = out; - mtpar.hotdrop = &hotdrop; - mtpar.hooknum = tgpar.hooknum = hook; + acpar.family = NFPROTO_BRIDGE; + acpar.in = in; + acpar.out = out; + acpar.hotdrop = false; + acpar.hooknum = hook; read_lock_bh(&table->lock); private = table->private; @@ -215,9 +213,9 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, if (ebt_basic_match(point, eth_hdr(skb), in, out)) goto letscontinue; - if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, &mtpar) != 0) + if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, &acpar) != 0) goto letscontinue; - if (hotdrop) { + if (acpar.hotdrop) { read_unlock_bh(&table->lock); return NF_DROP; } @@ -228,7 +226,7 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, /* these should only watch: not modify, nor tell us what to do with the packet */ - EBT_WATCHER_ITERATE(point, ebt_do_watcher, skb, &tgpar); + EBT_WATCHER_ITERATE(point, ebt_do_watcher, skb, &acpar); t = (struct ebt_entry_target *) (((char *)point) + point->target_offset); @@ -236,9 +234,9 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb, if (!t->u.target->target) verdict = ((struct ebt_standard_target *)t)->verdict; else { - tgpar.target = t->u.target; - tgpar.targinfo = t->data; - verdict = t->u.target->target(skb, &tgpar); + acpar.target = t->u.target; + acpar.targinfo = t->data; + verdict = t->u.target->target(skb, &acpar); } if (verdict == EBT_ACCEPT) { read_unlock_bh(&table->lock); @@ -363,12 +361,9 @@ ebt_check_match(struct ebt_entry_match *m, struct xt_mtchk_param *par, left - sizeof(struct ebt_entry_match) < m->match_size) return -EINVAL; - match = try_then_request_module(xt_find_match(NFPROTO_BRIDGE, - m->u.name, 0), "ebt_%s", m->u.name); + match = xt_request_find_match(NFPROTO_BRIDGE, m->u.name, 0); if (IS_ERR(match)) return PTR_ERR(match); - if (match == NULL) - return -ENOENT; m->u.match = match; par->match = match; @@ -397,13 +392,9 @@ ebt_check_watcher(struct ebt_entry_watcher *w, struct xt_tgchk_param *par, left - sizeof(struct ebt_entry_watcher) < w->watcher_size) return -EINVAL; - watcher = try_then_request_module( - xt_find_target(NFPROTO_BRIDGE, w->u.name, 0), - "ebt_%s", w->u.name); + watcher = xt_request_find_target(NFPROTO_BRIDGE, w->u.name, 0); if (IS_ERR(watcher)) return PTR_ERR(watcher); - if (watcher == NULL) - return -ENOENT; w->u.watcher = watcher; par->target = watcher; @@ -716,15 +707,10 @@ ebt_check_entry(struct ebt_entry *e, struct net *net, t = (struct ebt_entry_target *)(((char *)e) + e->target_offset); gap = e->next_offset - e->target_offset; - target = try_then_request_module( - xt_find_target(NFPROTO_BRIDGE, t->u.name, 0), - "ebt_%s", t->u.name); + target = xt_request_find_target(NFPROTO_BRIDGE, t->u.name, 0); if (IS_ERR(target)) { ret = PTR_ERR(target); goto cleanup_watchers; - } else if (target == NULL) { - ret = -ENOENT; - goto cleanup_watchers; } t->u.target = target; @@ -2128,7 +2114,7 @@ static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base, return ret; new_offset += ret; if (offsets_update && new_offset) { - pr_debug("ebtables: change offset %d to %d\n", + pr_debug("change offset %d to %d\n", offsets_update[i], offsets[j] + new_offset); offsets_update[i] = offsets[j] + new_offset; } |