MODULE_LICENSE("GPL");
MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
-MODULE_DESCRIPTION("[ip,ip6,arp]_tables backend module");
+MODULE_DESCRIPTION("{ip,ip6,arp,eb}_tables backend module");
#define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1))
#define duprintf(format, args...)
#endif
-static const char *xt_prefix[NPROTO] = {
- [AF_INET] = "ip",
- [AF_INET6] = "ip6",
- [NF_ARP] = "arp",
+static const char *const xt_prefix[NFPROTO_NUMPROTO] = {
+ [NFPROTO_UNSPEC] = "x",
+ [NFPROTO_IPV4] = "ip",
+ [NFPROTO_ARP] = "arp",
+ [NFPROTO_BRIDGE] = "eb",
+ [NFPROTO_IPV6] = "ip6",
};
/* Registration hooks for targets. */
int
xt_register_target(struct xt_target *target)
{
- int ret, af = target->family;
+ u_int8_t af = target->family;
+ int ret;
ret = mutex_lock_interruptible(&xt[af].mutex);
if (ret != 0)
void
xt_unregister_target(struct xt_target *target)
{
- int af = target->family;
+ u_int8_t af = target->family;
mutex_lock(&xt[af].mutex);
list_del(&target->list);
int
xt_register_match(struct xt_match *match)
{
- int ret, af = match->family;
+ u_int8_t af = match->family;
+ int ret;
ret = mutex_lock_interruptible(&xt[af].mutex);
if (ret != 0)
void
xt_unregister_match(struct xt_match *match)
{
- int af = match->family;
+ u_int8_t af = match->family;
mutex_lock(&xt[af].mutex);
list_del(&match->list);
*/
/* Find match, grabs ref. Returns ERR_PTR() on error. */
-struct xt_match *xt_find_match(int af, const char *name, u8 revision)
+struct xt_match *xt_find_match(u8 af, const char *name, u8 revision)
{
struct xt_match *m;
int err = 0;
}
}
mutex_unlock(&xt[af].mutex);
+
+ if (af != NFPROTO_UNSPEC)
+ /* Try searching again in the family-independent list */
+ return xt_find_match(NFPROTO_UNSPEC, name, revision);
+
return ERR_PTR(err);
}
EXPORT_SYMBOL(xt_find_match);
/* Find target, grabs ref. Returns ERR_PTR() on error. */
-struct xt_target *xt_find_target(int af, const char *name, u8 revision)
+struct xt_target *xt_find_target(u8 af, const char *name, u8 revision)
{
struct xt_target *t;
int err = 0;
}
}
mutex_unlock(&xt[af].mutex);
+
+ if (af != NFPROTO_UNSPEC)
+ /* Try searching again in the family-independent list */
+ return xt_find_target(NFPROTO_UNSPEC, name, revision);
+
return ERR_PTR(err);
}
EXPORT_SYMBOL(xt_find_target);
-struct xt_target *xt_request_find_target(int af, const char *name, u8 revision)
+struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision)
{
struct xt_target *target;
}
EXPORT_SYMBOL_GPL(xt_request_find_target);
-static int match_revfn(int af, const char *name, u8 revision, int *bestp)
+static int match_revfn(u8 af, const char *name, u8 revision, int *bestp)
{
- struct xt_match *m;
+ const struct xt_match *m;
int have_rev = 0;
list_for_each_entry(m, &xt[af].match, list) {
have_rev = 1;
}
}
+
+ if (af != NFPROTO_UNSPEC && !have_rev)
+ return match_revfn(NFPROTO_UNSPEC, name, revision, bestp);
+
return have_rev;
}
-static int target_revfn(int af, const char *name, u8 revision, int *bestp)
+static int target_revfn(u8 af, const char *name, u8 revision, int *bestp)
{
- struct xt_target *t;
+ const struct xt_target *t;
int have_rev = 0;
list_for_each_entry(t, &xt[af].target, list) {
have_rev = 1;
}
}
+
+ if (af != NFPROTO_UNSPEC && !have_rev)
+ return target_revfn(NFPROTO_UNSPEC, name, revision, bestp);
+
return have_rev;
}
/* Returns true or false (if no such extension at all) */
-int xt_find_revision(int af, const char *name, u8 revision, int target,
+int xt_find_revision(u8 af, const char *name, u8 revision, int target,
int *err)
{
int have_rev, best = -1;
}
EXPORT_SYMBOL_GPL(xt_find_revision);
-int xt_check_match(const struct xt_match *match, unsigned short family,
- unsigned int size, const char *table, unsigned int hook_mask,
- unsigned short proto, int inv_proto)
+static char *textify_hooks(char *buf, size_t size, unsigned int mask)
{
- if (XT_ALIGN(match->matchsize) != size) {
- printk("%s_tables: %s match: invalid size %Zu != %u\n",
- xt_prefix[family], match->name,
- XT_ALIGN(match->matchsize), size);
+ static const char *const names[] = {
+ "PREROUTING", "INPUT", "FORWARD",
+ "OUTPUT", "POSTROUTING", "BROUTING",
+ };
+ unsigned int i;
+ char *p = buf;
+ bool np = false;
+ int res;
+
+ *p = '\0';
+ for (i = 0; i < ARRAY_SIZE(names); ++i) {
+ if (!(mask & (1 << i)))
+ continue;
+ res = snprintf(p, size, "%s%s", np ? "/" : "", names[i]);
+ if (res > 0) {
+ size -= res;
+ p += res;
+ }
+ np = true;
+ }
+
+ return buf;
+}
+
+int xt_check_match(struct xt_mtchk_param *par,
+ unsigned int size, u_int8_t proto, bool inv_proto)
+{
+ if (XT_ALIGN(par->match->matchsize) != size &&
+ par->match->matchsize != -1) {
+ /*
+ * ebt_among is exempt from centralized matchsize checking
+ * because it uses a dynamic-size data set.
+ */
+ pr_err("%s_tables: %s match: invalid size %u != %u\n",
+ xt_prefix[par->family], par->match->name,
+ XT_ALIGN(par->match->matchsize), size);
return -EINVAL;
}
- if (match->table && strcmp(match->table, table)) {
- printk("%s_tables: %s match: only valid in %s table, not %s\n",
- xt_prefix[family], match->name, match->table, table);
+ if (par->match->table != NULL &&
+ strcmp(par->match->table, par->table) != 0) {
+ pr_err("%s_tables: %s match: only valid in %s table, not %s\n",
+ xt_prefix[par->family], par->match->name,
+ par->match->table, par->table);
return -EINVAL;
}
- if (match->hooks && (hook_mask & ~match->hooks) != 0) {
- printk("%s_tables: %s match: bad hook_mask %u/%u\n",
- xt_prefix[family], match->name, hook_mask, match->hooks);
+ if (par->match->hooks && (par->hook_mask & ~par->match->hooks) != 0) {
+ char used[64], allow[64];
+
+ pr_err("%s_tables: %s match: used from hooks %s, but only "
+ "valid from %s\n",
+ xt_prefix[par->family], par->match->name,
+ textify_hooks(used, sizeof(used), par->hook_mask),
+ textify_hooks(allow, sizeof(allow), par->match->hooks));
return -EINVAL;
}
- if (match->proto && (match->proto != proto || inv_proto)) {
- printk("%s_tables: %s match: only valid for protocol %u\n",
- xt_prefix[family], match->name, match->proto);
+ if (par->match->proto && (par->match->proto != proto || inv_proto)) {
+ pr_err("%s_tables: %s match: only valid for protocol %u\n",
+ xt_prefix[par->family], par->match->name,
+ par->match->proto);
return -EINVAL;
}
+ if (par->match->checkentry != NULL && !par->match->checkentry(par))
+ return -EINVAL;
return 0;
}
EXPORT_SYMBOL_GPL(xt_check_match);
#ifdef CONFIG_COMPAT
-int xt_compat_add_offset(int af, unsigned int offset, short delta)
+int xt_compat_add_offset(u_int8_t af, unsigned int offset, short delta)
{
struct compat_delta *tmp;
}
EXPORT_SYMBOL_GPL(xt_compat_add_offset);
-void xt_compat_flush_offsets(int af)
+void xt_compat_flush_offsets(u_int8_t af)
{
struct compat_delta *tmp, *next;
}
EXPORT_SYMBOL_GPL(xt_compat_flush_offsets);
-short xt_compat_calc_jump(int af, unsigned int offset)
+short xt_compat_calc_jump(u_int8_t af, unsigned int offset)
{
struct compat_delta *tmp;
short delta;
}
EXPORT_SYMBOL_GPL(xt_compat_calc_jump);
-int xt_compat_match_offset(struct xt_match *match)
+int xt_compat_match_offset(const struct xt_match *match)
{
u_int16_t csize = match->compatsize ? : match->matchsize;
return XT_ALIGN(match->matchsize) - COMPAT_XT_ALIGN(csize);
int xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,
unsigned int *size)
{
- struct xt_match *match = m->u.kernel.match;
+ const struct xt_match *match = m->u.kernel.match;
struct compat_xt_entry_match *cm = (struct compat_xt_entry_match *)m;
int pad, off = xt_compat_match_offset(match);
u_int16_t msize = cm->u.user.match_size;
int xt_compat_match_to_user(struct xt_entry_match *m, void __user **dstptr,
unsigned int *size)
{
- struct xt_match *match = m->u.kernel.match;
+ const struct xt_match *match = m->u.kernel.match;
struct compat_xt_entry_match __user *cm = *dstptr;
int off = xt_compat_match_offset(match);
u_int16_t msize = m->u.user.match_size - off;
EXPORT_SYMBOL_GPL(xt_compat_match_to_user);
#endif /* CONFIG_COMPAT */
-int xt_check_target(const struct xt_target *target, unsigned short family,
- unsigned int size, const char *table, unsigned int hook_mask,
- unsigned short proto, int inv_proto)
+int xt_check_target(struct xt_tgchk_param *par,
+ unsigned int size, u_int8_t proto, bool inv_proto)
{
- if (XT_ALIGN(target->targetsize) != size) {
- printk("%s_tables: %s target: invalid size %Zu != %u\n",
- xt_prefix[family], target->name,
- XT_ALIGN(target->targetsize), size);
+ if (XT_ALIGN(par->target->targetsize) != size) {
+ pr_err("%s_tables: %s target: invalid size %u != %u\n",
+ xt_prefix[par->family], par->target->name,
+ XT_ALIGN(par->target->targetsize), size);
return -EINVAL;
}
- if (target->table && strcmp(target->table, table)) {
- printk("%s_tables: %s target: only valid in %s table, not %s\n",
- xt_prefix[family], target->name, target->table, table);
+ if (par->target->table != NULL &&
+ strcmp(par->target->table, par->table) != 0) {
+ pr_err("%s_tables: %s target: only valid in %s table, not %s\n",
+ xt_prefix[par->family], par->target->name,
+ par->target->table, par->table);
return -EINVAL;
}
- if (target->hooks && (hook_mask & ~target->hooks) != 0) {
- printk("%s_tables: %s target: bad hook_mask %u/%u\n",
- xt_prefix[family], target->name, hook_mask,
- target->hooks);
+ if (par->target->hooks && (par->hook_mask & ~par->target->hooks) != 0) {
+ char used[64], allow[64];
+
+ pr_err("%s_tables: %s target: used from hooks %s, but only "
+ "usable from %s\n",
+ xt_prefix[par->family], par->target->name,
+ textify_hooks(used, sizeof(used), par->hook_mask),
+ textify_hooks(allow, sizeof(allow), par->target->hooks));
return -EINVAL;
}
- if (target->proto && (target->proto != proto || inv_proto)) {
- printk("%s_tables: %s target: only valid for protocol %u\n",
- xt_prefix[family], target->name, target->proto);
+ if (par->target->proto && (par->target->proto != proto || inv_proto)) {
+ pr_err("%s_tables: %s target: only valid for protocol %u\n",
+ xt_prefix[par->family], par->target->name,
+ par->target->proto);
return -EINVAL;
}
+ if (par->target->checkentry != NULL && !par->target->checkentry(par))
+ return -EINVAL;
return 0;
}
EXPORT_SYMBOL_GPL(xt_check_target);
#ifdef CONFIG_COMPAT
-int xt_compat_target_offset(struct xt_target *target)
+int xt_compat_target_offset(const struct xt_target *target)
{
u_int16_t csize = target->compatsize ? : target->targetsize;
return XT_ALIGN(target->targetsize) - COMPAT_XT_ALIGN(csize);
void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,
unsigned int *size)
{
- struct xt_target *target = t->u.kernel.target;
+ const struct xt_target *target = t->u.kernel.target;
struct compat_xt_entry_target *ct = (struct compat_xt_entry_target *)t;
int pad, off = xt_compat_target_offset(target);
u_int16_t tsize = ct->u.user.target_size;
int xt_compat_target_to_user(struct xt_entry_target *t, void __user **dstptr,
unsigned int *size)
{
- struct xt_target *target = t->u.kernel.target;
+ const struct xt_target *target = t->u.kernel.target;
struct compat_xt_entry_target __user *ct = *dstptr;
int off = xt_compat_target_offset(target);
u_int16_t tsize = t->u.user.target_size - off;
int cpu;
/* Pedantry: prevent them from hitting BUG() in vmalloc.c --RR */
- if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > num_physpages)
+ if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > totalram_pages)
return NULL;
newinfo = kzalloc(XT_TABLE_INFO_SZ, GFP_KERNEL);
EXPORT_SYMBOL(xt_free_table_info);
/* Find table by name, grabs mutex & ref. Returns ERR_PTR() on error. */
-struct xt_table *xt_find_table_lock(struct net *net, int af, const char *name)
+struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af,
+ const char *name)
{
struct xt_table *t;
EXPORT_SYMBOL_GPL(xt_table_unlock);
#ifdef CONFIG_COMPAT
-void xt_compat_lock(int af)
+void xt_compat_lock(u_int8_t af)
{
mutex_lock(&xt[af].compat_mutex);
}
EXPORT_SYMBOL_GPL(xt_compat_lock);
-void xt_compat_unlock(int af)
+void xt_compat_unlock(u_int8_t af)
{
mutex_unlock(&xt[af].compat_mutex);
}
EXPORT_SYMBOL_GPL(xt_compat_unlock);
#endif
+DEFINE_PER_CPU(struct xt_info_lock, xt_info_locks);
+EXPORT_PER_CPU_SYMBOL_GPL(xt_info_locks);
+
+
struct xt_table_info *
xt_replace_table(struct xt_table *table,
unsigned int num_counters,
struct xt_table_info *newinfo,
int *error)
{
- struct xt_table_info *oldinfo, *private;
+ struct xt_table_info *private;
/* Do the substitution. */
- write_lock_bh(&table->lock);
+ local_bh_disable();
private = table->private;
+
/* Check inside lock: is the old number correct? */
if (num_counters != private->number) {
duprintf("num_counters != table->private->number (%u/%u)\n",
num_counters, private->number);
- write_unlock_bh(&table->lock);
+ local_bh_enable();
*error = -EAGAIN;
return NULL;
}
- oldinfo = private;
+
table->private = newinfo;
- newinfo->initial_entries = oldinfo->initial_entries;
- write_unlock_bh(&table->lock);
+ newinfo->initial_entries = private->initial_entries;
- return oldinfo;
+ /*
+ * Even though table entries have now been swapped, other CPU's
+ * may still be using the old entries. This is okay, because
+ * resynchronization happens because of the locking done
+ * during the get_counters() routine.
+ */
+ local_bh_enable();
+
+ return private;
}
EXPORT_SYMBOL_GPL(xt_replace_table);
-struct xt_table *xt_register_table(struct net *net, struct xt_table *table,
+struct xt_table *xt_register_table(struct net *net,
+ const struct xt_table *input_table,
struct xt_table_info *bootstrap,
struct xt_table_info *newinfo)
{
int ret;
struct xt_table_info *private;
- struct xt_table *t;
+ struct xt_table *t, *table;
/* Don't add one object to multiple lists. */
- table = kmemdup(table, sizeof(struct xt_table), GFP_KERNEL);
+ table = kmemdup(input_table, sizeof(struct xt_table), GFP_KERNEL);
if (!table) {
ret = -ENOMEM;
goto out;
/* Simplifies replace_table code. */
table->private = bootstrap;
- rwlock_init(&table->lock);
+
if (!xt_replace_table(table, 0, newinfo, &ret))
goto unlock;
EXPORT_SYMBOL_GPL(xt_unregister_table);
#ifdef CONFIG_PROC_FS
+struct xt_names_priv {
+ struct seq_net_private p;
+ u_int8_t af;
+};
static void *xt_table_seq_start(struct seq_file *seq, loff_t *pos)
{
- struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
- u_int16_t af = (unsigned long)pde->data;
+ struct xt_names_priv *priv = seq->private;
+ struct net *net = seq_file_net(seq);
+ u_int8_t af = priv->af;
mutex_lock(&xt[af].mutex);
- return seq_list_start(&init_net.xt.tables[af], *pos);
+ return seq_list_start(&net->xt.tables[af], *pos);
}
static void *xt_table_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
- struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
- u_int16_t af = (unsigned long)pde->data;
+ struct xt_names_priv *priv = seq->private;
+ struct net *net = seq_file_net(seq);
+ u_int8_t af = priv->af;
- return seq_list_next(v, &init_net.xt.tables[af], pos);
+ return seq_list_next(v, &net->xt.tables[af], pos);
}
static void xt_table_seq_stop(struct seq_file *seq, void *v)
{
- struct proc_dir_entry *pde = seq->private;
- u_int16_t af = (unsigned long)pde->data;
+ struct xt_names_priv *priv = seq->private;
+ u_int8_t af = priv->af;
mutex_unlock(&xt[af].mutex);
}
static int xt_table_open(struct inode *inode, struct file *file)
{
int ret;
+ struct xt_names_priv *priv;
- ret = seq_open(file, &xt_table_seq_ops);
+ ret = seq_open_net(inode, file, &xt_table_seq_ops,
+ sizeof(struct xt_names_priv));
if (!ret) {
- struct seq_file *seq = file->private_data;
-
- seq->private = PDE(inode);
+ priv = ((struct seq_file *)file->private_data)->private;
+ priv->af = (unsigned long)PDE(inode)->data;
}
return ret;
}
.open = xt_table_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release,
+ .release = seq_release_net,
};
-static void *xt_match_seq_start(struct seq_file *seq, loff_t *pos)
+/*
+ * Traverse state for ip{,6}_{tables,matches} for helping crossing
+ * the multi-AF mutexes.
+ */
+struct nf_mttg_trav {
+ struct list_head *head, *curr;
+ uint8_t class, nfproto;
+};
+
+enum {
+ MTTG_TRAV_INIT,
+ MTTG_TRAV_NFP_UNSPEC,
+ MTTG_TRAV_NFP_SPEC,
+ MTTG_TRAV_DONE,
+};
+
+static void *xt_mttg_seq_next(struct seq_file *seq, void *v, loff_t *ppos,
+ bool is_target)
{
- struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
- u_int16_t af = (unsigned long)pde->data;
+ static const uint8_t next_class[] = {
+ [MTTG_TRAV_NFP_UNSPEC] = MTTG_TRAV_NFP_SPEC,
+ [MTTG_TRAV_NFP_SPEC] = MTTG_TRAV_DONE,
+ };
+ struct nf_mttg_trav *trav = seq->private;
+
+ switch (trav->class) {
+ case MTTG_TRAV_INIT:
+ trav->class = MTTG_TRAV_NFP_UNSPEC;
+ mutex_lock(&xt[NFPROTO_UNSPEC].mutex);
+ trav->head = trav->curr = is_target ?
+ &xt[NFPROTO_UNSPEC].target : &xt[NFPROTO_UNSPEC].match;
+ break;
+ case MTTG_TRAV_NFP_UNSPEC:
+ trav->curr = trav->curr->next;
+ if (trav->curr != trav->head)
+ break;
+ mutex_unlock(&xt[NFPROTO_UNSPEC].mutex);
+ mutex_lock(&xt[trav->nfproto].mutex);
+ trav->head = trav->curr = is_target ?
+ &xt[trav->nfproto].target : &xt[trav->nfproto].match;
+ trav->class = next_class[trav->class];
+ break;
+ case MTTG_TRAV_NFP_SPEC:
+ trav->curr = trav->curr->next;
+ if (trav->curr != trav->head)
+ break;
+ /* fallthru, _stop will unlock */
+ default:
+ return NULL;
+ }
- mutex_lock(&xt[af].mutex);
- return seq_list_start(&xt[af].match, *pos);
+ if (ppos != NULL)
+ ++*ppos;
+ return trav;
}
-static void *xt_match_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+static void *xt_mttg_seq_start(struct seq_file *seq, loff_t *pos,
+ bool is_target)
{
- struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
- u_int16_t af = (unsigned long)pde->data;
+ struct nf_mttg_trav *trav = seq->private;
+ unsigned int j;
- return seq_list_next(v, &xt[af].match, pos);
+ trav->class = MTTG_TRAV_INIT;
+ for (j = 0; j < *pos; ++j)
+ if (xt_mttg_seq_next(seq, NULL, NULL, is_target) == NULL)
+ return NULL;
+ return trav;
}
-static void xt_match_seq_stop(struct seq_file *seq, void *v)
+static void xt_mttg_seq_stop(struct seq_file *seq, void *v)
{
- struct proc_dir_entry *pde = seq->private;
- u_int16_t af = (unsigned long)pde->data;
+ struct nf_mttg_trav *trav = seq->private;
+
+ switch (trav->class) {
+ case MTTG_TRAV_NFP_UNSPEC:
+ mutex_unlock(&xt[NFPROTO_UNSPEC].mutex);
+ break;
+ case MTTG_TRAV_NFP_SPEC:
+ mutex_unlock(&xt[trav->nfproto].mutex);
+ break;
+ }
+}
- mutex_unlock(&xt[af].mutex);
+static void *xt_match_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ return xt_mttg_seq_start(seq, pos, false);
}
-static int xt_match_seq_show(struct seq_file *seq, void *v)
+static void *xt_match_seq_next(struct seq_file *seq, void *v, loff_t *ppos)
{
- struct xt_match *match = list_entry(v, struct xt_match, list);
+ return xt_mttg_seq_next(seq, v, ppos, false);
+}
- if (strlen(match->name))
- return seq_printf(seq, "%s\n", match->name);
- else
- return 0;
+static int xt_match_seq_show(struct seq_file *seq, void *v)
+{
+ const struct nf_mttg_trav *trav = seq->private;
+ const struct xt_match *match;
+
+ switch (trav->class) {
+ case MTTG_TRAV_NFP_UNSPEC:
+ case MTTG_TRAV_NFP_SPEC:
+ if (trav->curr == trav->head)
+ return 0;
+ match = list_entry(trav->curr, struct xt_match, list);
+ return (*match->name == '\0') ? 0 :
+ seq_printf(seq, "%s\n", match->name);
+ }
+ return 0;
}
static const struct seq_operations xt_match_seq_ops = {
.start = xt_match_seq_start,
.next = xt_match_seq_next,
- .stop = xt_match_seq_stop,
+ .stop = xt_mttg_seq_stop,
.show = xt_match_seq_show,
};
static int xt_match_open(struct inode *inode, struct file *file)
{
+ struct seq_file *seq;
+ struct nf_mttg_trav *trav;
int ret;
- ret = seq_open(file, &xt_match_seq_ops);
- if (!ret) {
- struct seq_file *seq = file->private_data;
+ trav = kmalloc(sizeof(*trav), GFP_KERNEL);
+ if (trav == NULL)
+ return -ENOMEM;
- seq->private = PDE(inode);
+ ret = seq_open(file, &xt_match_seq_ops);
+ if (ret < 0) {
+ kfree(trav);
+ return ret;
}
- return ret;
+
+ seq = file->private_data;
+ seq->private = trav;
+ trav->nfproto = (unsigned long)PDE(inode)->data;
+ return 0;
}
static const struct file_operations xt_match_ops = {
.open = xt_match_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release,
+ .release = seq_release_private,
};
static void *xt_target_seq_start(struct seq_file *seq, loff_t *pos)
{
- struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
- u_int16_t af = (unsigned long)pde->data;
-
- mutex_lock(&xt[af].mutex);
- return seq_list_start(&xt[af].target, *pos);
-}
-
-static void *xt_target_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
- struct proc_dir_entry *pde = (struct proc_dir_entry *)seq->private;
- u_int16_t af = (unsigned long)pde->data;
-
- return seq_list_next(v, &xt[af].target, pos);
+ return xt_mttg_seq_start(seq, pos, true);
}
-static void xt_target_seq_stop(struct seq_file *seq, void *v)
+static void *xt_target_seq_next(struct seq_file *seq, void *v, loff_t *ppos)
{
- struct proc_dir_entry *pde = seq->private;
- u_int16_t af = (unsigned long)pde->data;
-
- mutex_unlock(&xt[af].mutex);
+ return xt_mttg_seq_next(seq, v, ppos, true);
}
static int xt_target_seq_show(struct seq_file *seq, void *v)
{
- struct xt_target *target = list_entry(v, struct xt_target, list);
-
- if (strlen(target->name))
- return seq_printf(seq, "%s\n", target->name);
- else
- return 0;
+ const struct nf_mttg_trav *trav = seq->private;
+ const struct xt_target *target;
+
+ switch (trav->class) {
+ case MTTG_TRAV_NFP_UNSPEC:
+ case MTTG_TRAV_NFP_SPEC:
+ if (trav->curr == trav->head)
+ return 0;
+ target = list_entry(trav->curr, struct xt_target, list);
+ return (*target->name == '\0') ? 0 :
+ seq_printf(seq, "%s\n", target->name);
+ }
+ return 0;
}
static const struct seq_operations xt_target_seq_ops = {
.start = xt_target_seq_start,
.next = xt_target_seq_next,
- .stop = xt_target_seq_stop,
+ .stop = xt_mttg_seq_stop,
.show = xt_target_seq_show,
};
static int xt_target_open(struct inode *inode, struct file *file)
{
+ struct seq_file *seq;
+ struct nf_mttg_trav *trav;
int ret;
- ret = seq_open(file, &xt_target_seq_ops);
- if (!ret) {
- struct seq_file *seq = file->private_data;
+ trav = kmalloc(sizeof(*trav), GFP_KERNEL);
+ if (trav == NULL)
+ return -ENOMEM;
- seq->private = PDE(inode);
+ ret = seq_open(file, &xt_target_seq_ops);
+ if (ret < 0) {
+ kfree(trav);
+ return ret;
}
- return ret;
+
+ seq = file->private_data;
+ seq->private = trav;
+ trav->nfproto = (unsigned long)PDE(inode)->data;
+ return 0;
}
static const struct file_operations xt_target_ops = {
.open = xt_target_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release,
+ .release = seq_release_private,
};
#define FORMAT_TABLES "_tables_names"
#endif /* CONFIG_PROC_FS */
-int xt_proto_init(int af)
+int xt_proto_init(struct net *net, u_int8_t af)
{
#ifdef CONFIG_PROC_FS
char buf[XT_FUNCTION_MAXNAMELEN];
struct proc_dir_entry *proc;
#endif
- if (af >= NPROTO)
+ if (af >= ARRAY_SIZE(xt_prefix))
return -EINVAL;
#ifdef CONFIG_PROC_FS
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TABLES, sizeof(buf));
- proc = proc_net_fops_create(&init_net, buf, 0440, &xt_table_ops);
+ proc = proc_create_data(buf, 0440, net->proc_net, &xt_table_ops,
+ (void *)(unsigned long)af);
if (!proc)
goto out;
- proc->data = (void *)(unsigned long)af;
-
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_MATCHES, sizeof(buf));
- proc = proc_net_fops_create(&init_net, buf, 0440, &xt_match_ops);
+ proc = proc_create_data(buf, 0440, net->proc_net, &xt_match_ops,
+ (void *)(unsigned long)af);
if (!proc)
goto out_remove_tables;
- proc->data = (void *)(unsigned long)af;
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TARGETS, sizeof(buf));
- proc = proc_net_fops_create(&init_net, buf, 0440, &xt_target_ops);
+ proc = proc_create_data(buf, 0440, net->proc_net, &xt_target_ops,
+ (void *)(unsigned long)af);
if (!proc)
goto out_remove_matches;
- proc->data = (void *)(unsigned long)af;
#endif
return 0;
out_remove_matches:
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_MATCHES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
out_remove_tables:
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TABLES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
out:
return -1;
#endif
}
EXPORT_SYMBOL_GPL(xt_proto_init);
-void xt_proto_fini(int af)
+void xt_proto_fini(struct net *net, u_int8_t af)
{
#ifdef CONFIG_PROC_FS
char buf[XT_FUNCTION_MAXNAMELEN];
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TABLES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_TARGETS, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
strlcpy(buf, xt_prefix[af], sizeof(buf));
strlcat(buf, FORMAT_MATCHES, sizeof(buf));
- proc_net_remove(&init_net, buf);
+ proc_net_remove(net, buf);
#endif /*CONFIG_PROC_FS*/
}
EXPORT_SYMBOL_GPL(xt_proto_fini);
{
int i;
- for (i = 0; i < NPROTO; i++)
+ for (i = 0; i < NFPROTO_NUMPROTO; i++)
INIT_LIST_HEAD(&net->xt.tables[i]);
return 0;
}
static int __init xt_init(void)
{
- int i, rv;
+ unsigned int i;
+ int rv;
+
+ for_each_possible_cpu(i) {
+ struct xt_info_lock *lock = &per_cpu(xt_info_locks, i);
+ spin_lock_init(&lock->lock);
+ lock->readers = 0;
+ }
- xt = kmalloc(sizeof(struct xt_af) * NPROTO, GFP_KERNEL);
+ xt = kmalloc(sizeof(struct xt_af) * NFPROTO_NUMPROTO, GFP_KERNEL);
if (!xt)
return -ENOMEM;
- for (i = 0; i < NPROTO; i++) {
+ for (i = 0; i < NFPROTO_NUMPROTO; i++) {
mutex_init(&xt[i].mutex);
#ifdef CONFIG_COMPAT
mutex_init(&xt[i].compat_mutex);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff