Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 127 insertions, 0 deletions

diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h
new file mode 100644
index 000000000..fd533552a
--- /dev/null
+++ b/include/linux/netfilter_bridge/ebtables.h
@@ -0,0 +1,127 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *  ebtables
+ *
+ *	Authors:
+ *	Bart De Schuymer		<bdschuym@pandora.be>
+ *
+ *  ebtables.c,v 2.0, April, 2002
+ *
+ *  This code is strongly inspired by the iptables code which is
+ *  Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
+ */
+#ifndef __LINUX_BRIDGE_EFF_H
+#define __LINUX_BRIDGE_EFF_H
+
+#include <linux/if.h>
+#include <linux/if_ether.h>
+#include <uapi/linux/netfilter_bridge/ebtables.h>
+
+struct ebt_match {
+	struct list_head list;
+	const char name[EBT_FUNCTION_MAXNAMELEN];
+	bool (*match)(const struct sk_buff *skb, const struct net_device *in,
+		const struct net_device *out, const struct xt_match *match,
+		const void *matchinfo, int offset, unsigned int protoff,
+		bool *hotdrop);
+	bool (*checkentry)(const char *table, const void *entry,
+		const struct xt_match *match, void *matchinfo,
+		unsigned int hook_mask);
+	void (*destroy)(const struct xt_match *match, void *matchinfo);
+	unsigned int matchsize;
+	u_int8_t revision;
+	u_int8_t family;
+	struct module *me;
+};
+
+struct ebt_watcher {
+	struct list_head list;
+	const char name[EBT_FUNCTION_MAXNAMELEN];
+	unsigned int (*target)(struct sk_buff *skb,
+		const struct net_device *in, const struct net_device *out,
+		unsigned int hook_num, const struct xt_target *target,
+		const void *targinfo);
+	bool (*checkentry)(const char *table, const void *entry,
+		const struct xt_target *target, void *targinfo,
+		unsigned int hook_mask);
+	void (*destroy)(const struct xt_target *target, void *targinfo);
+	unsigned int targetsize;
+	u_int8_t revision;
+	u_int8_t family;
+	struct module *me;
+};
+
+struct ebt_target {
+	struct list_head list;
+	const char name[EBT_FUNCTION_MAXNAMELEN];
+	/* returns one of the standard EBT_* verdicts */
+	unsigned int (*target)(struct sk_buff *skb,
+		const struct net_device *in, const struct net_device *out,
+		unsigned int hook_num, const struct xt_target *target,
+		const void *targinfo);
+	bool (*checkentry)(const char *table, const void *entry,
+		const struct xt_target *target, void *targinfo,
+		unsigned int hook_mask);
+	void (*destroy)(const struct xt_target *target, void *targinfo);
+	unsigned int targetsize;
+	u_int8_t revision;
+	u_int8_t family;
+	struct module *me;
+};
+
+/* used for jumping from and into user defined chains (udc) */
+struct ebt_chainstack {
+	struct ebt_entries *chaininfo; /* pointer to chain data */
+	struct ebt_entry *e; /* pointer to entry data */
+	unsigned int n; /* n'th entry */
+};
+
+struct ebt_table_info {
+	/* total size of the entries */
+	unsigned int entries_size;
+	unsigned int nentries;
+	/* pointers to the start of the chains */
+	struct ebt_entries *hook_entry[NF_BR_NUMHOOKS];
+	/* room to maintain the stack used for jumping from and into udc */
+	struct ebt_chainstack **chainstack;
+	char *entries;
+	struct ebt_counter counters[] ____cacheline_aligned;
+};
+
+struct ebt_table {
+	struct list_head list;
+	char name[EBT_TABLE_MAXNAMELEN];
+	struct ebt_replace_kernel *table;
+	unsigned int valid_hooks;
+	rwlock_t lock;
+	/* the data used by the kernel */
+	struct ebt_table_info *private;
+	struct nf_hook_ops *ops;
+	struct module *me;
+};
+
+#define EBT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) & \
+		     ~(__alignof__(struct _xt_align)-1))
+
+extern int ebt_register_table(struct net *net,
+			      const struct ebt_table *table,
+			      const struct nf_hook_ops *ops);
+extern void ebt_unregister_table(struct net *net, const char *tablename);
+void ebt_unregister_table_pre_exit(struct net *net, const char *tablename);
+extern unsigned int ebt_do_table(void *priv, struct sk_buff *skb,
+				 const struct nf_hook_state *state);
+
+/* True if the hook mask denotes that the rule is in a base chain,
+ * used in the check() functions */
+#define BASE_CHAIN (par->hook_mask & (1 << NF_BR_NUMHOOKS))
+/* Clear the bit in the hook mask that tells if the rule is on a base chain */
+#define CLEAR_BASE_CHAIN_BIT (par->hook_mask &= ~(1 << NF_BR_NUMHOOKS))
+
+static inline bool ebt_invalid_target(int target)
+{
+	return (target < -NUM_STANDARD_TARGETS || target >= 0);
+}
+
+int ebt_register_template(const struct ebt_table *t, int(*table_init)(struct net *net));
+void ebt_unregister_template(const struct ebt_table *t);
+#endif