linux/net/sched/cls_fw.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * net/sched/cls_fw.c	Classifier mapping ipchains' fwmark to traffic class.
 *
 * Authors:	Alexey Kuznetsov, <[email protected]>
 *
 * Changes:
 * Karlis Peisenieks <[email protected]> : 990415 : fw_walk off by one
 * Karlis Peisenieks <[email protected]> : 990415 : fw_delete killed all the filter (and kernel).
 * Alex <[email protected]> : 2004xxyy: Added Action extension
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/skbuff.h>
#include <net/netlink.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>
#include <net/sch_generic.h>
#include <net/tc_wrapper.h>

#define HTSIZE …

struct fw_head { … };

struct fw_filter { … };

static u32 fw_hash(u32 handle)
{ … }

TC_INDIRECT_SCOPE int fw_classify(struct sk_buff *skb,
				  const struct tcf_proto *tp,
				  struct tcf_result *res)
{ … }

static void *fw_get(struct tcf_proto *tp, u32 handle)
{ … }

static int fw_init(struct tcf_proto *tp)
{ … }

static void __fw_delete_filter(struct fw_filter *f)
{ … }

static void fw_delete_filter_work(struct work_struct *work)
{ … }

static void fw_destroy(struct tcf_proto *tp, bool rtnl_held,
		       struct netlink_ext_ack *extack)
{ … }

static int fw_delete(struct tcf_proto *tp, void *arg, bool *last,
		     bool rtnl_held, struct netlink_ext_ack *extack)
{ … }

static const struct nla_policy fw_policy[TCA_FW_MAX + 1] = …;

static int fw_set_parms(struct net *net, struct tcf_proto *tp,
			struct fw_filter *f, struct nlattr **tb,
			struct nlattr **tca, unsigned long base, u32 flags,
			struct netlink_ext_ack *extack)
{ … }

static int fw_change(struct net *net, struct sk_buff *in_skb,
		     struct tcf_proto *tp, unsigned long base,
		     u32 handle, struct nlattr **tca, void **arg,
		     u32 flags, struct netlink_ext_ack *extack)
{ … }

static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg,
		    bool rtnl_held)
{ … }

static int fw_dump(struct net *net, struct tcf_proto *tp, void *fh,
		   struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
{ … }

static void fw_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
			  unsigned long base)
{ … }

static struct tcf_proto_ops cls_fw_ops __read_mostly = …;
MODULE_ALIAS_NET_CLS(…) …;

static int __init init_fw(void)
{ … }

static void __exit exit_fw(void)
{ … }

module_init(…) …
module_exit(…)
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;