static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
			   int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_tunnel_key *t = to_tunnel_key(a);
	struct tcf_tunnel_key_params *params;
	struct tc_tunnel_key opt = {
		.index    = t->tcf_index,
		.refcnt   = refcount_read(&t->tcf_refcnt) - ref,
		.bindcnt  = atomic_read(&t->tcf_bindcnt) - bind,
	};
	struct tcf_t tm;

	spin_lock_bh(&t->tcf_lock);
	params = rcu_dereference_protected(t->params,
					   lockdep_is_held(&t->tcf_lock));
	opt.action   = t->tcf_action;
	opt.t_action = params->tcft_action;

	if (nla_put(skb, TCA_TUNNEL_KEY_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;

	if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) {
		struct ip_tunnel_info *info =
			&params->tcft_enc_metadata->u.tun_info;
		struct ip_tunnel_key *key = &info->key;
		__be32 key_id = tunnel_id_to_key32(key->tun_id);

		if (((key->tun_flags & TUNNEL_KEY) &&
		     nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id)) ||
		    tunnel_key_dump_addresses(skb,
					      &params->tcft_enc_metadata->u.tun_info) ||
		    (key->tp_dst &&
		      nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT,
				   key->tp_dst)) ||
		    nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
			       !(key->tun_flags & TUNNEL_CSUM)) ||
		    tunnel_key_opts_dump(skb, info))
			goto nla_put_failure;

		if (key->tos && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TOS, key->tos))
			goto nla_put_failure;

		if (key->ttl && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TTL, key->ttl))
			goto nla_put_failure;
	}

	tcf_tm_dump(&tm, &t->tcf_tm);
	if (nla_put_64bit(skb, TCA_TUNNEL_KEY_TM, sizeof(tm),
			  &tm, TCA_TUNNEL_KEY_PAD))
		goto nla_put_failure;
	spin_unlock_bh(&t->tcf_lock);

	return skb->len;

nla_put_failure:
	spin_unlock_bh(&t->tcf_lock);
	nlmsg_trim(skb, b);
	return -1;
}

static int tunnel_key_walker(struct net *net, struct sk_buff *skb,
			     struct netlink_callback *cb, int type,
			     const struct tc_action_ops *ops,
			     struct netlink_ext_ack *extack)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops, extack);
}

static int tunnel_key_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tcf_idr_search(tn, a, index);
}

static struct tc_action_ops act_tunnel_key_ops = {
	.kind		=	"tunnel_key",
	.type		=	TCA_ACT_TUNNEL_KEY,
	.owner		=	THIS_MODULE,
	.act		=	tunnel_key_act,
	.dump		=	tunnel_key_dump,
	.init		=	tunnel_key_init,
	.cleanup	=	tunnel_key_release,
	.walk		=	tunnel_key_walker,
	.lookup		=	tunnel_key_search,
	.size		=	sizeof(struct tcf_tunnel_key),
};

static __net_init int tunnel_key_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);

	return tc_action_net_init(tn, &act_tunnel_key_ops);
}

static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
{
	tc_action_net_exit(net_list, tunnel_key_net_id);
}

static struct pernet_operations tunnel_key_net_ops = {
	.init = tunnel_key_init_net,
	.exit_batch = tunnel_key_exit_net,
	.id   = &tunnel_key_net_id,
	.size = sizeof(struct tc_action_net),
};

static int __init tunnel_key_init_module(void)
{
	return tcf_register_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
}

static void __exit tunnel_key_cleanup_module(void)
{
	tcf_unregister_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
}

module_init(tunnel_key_init_module);
module_exit(tunnel_key_cleanup_module);

MODULE_AUTHOR("Amir Vadai <[email protected]>");
MODULE_DESCRIPTION("ip tunnel manipulation actions");
MODULE_LICENSE("GPL v2");
static int
tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
{
	struct net *net = sock_net(skb->sk);
	struct nlmsghdr *nlh;
	unsigned char *b = skb_tail_pointer(skb);
	struct nlattr *nest;
	struct tc_action_ops *a_o;
	struct tc_action a;
	int ret = 0;
	struct tcamsg *t = (struct tcamsg *) NLMSG_DATA(cb->nlh);
	struct nlattr *kind = find_dump_kind(cb->nlh);

	if (!net_eq(net, &init_net))
		return 0;

	if (kind == NULL) {
		printk("tc_dump_action: action bad kind\n");
		return 0;
	}

	a_o = tc_lookup_action(kind);
	if (a_o == NULL) {
		return 0;
	}

	memset(&a, 0, sizeof(struct tc_action));
	a.ops = a_o;

	if (a_o->walk == NULL) {
		printk("tc_dump_action: %s !capable of dumping table\n", a_o->kind);
		goto nla_put_failure;
	}

	nlh = NLMSG_PUT(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
			cb->nlh->nlmsg_type, sizeof(*t));
	t = NLMSG_DATA(nlh);
	t->tca_family = AF_UNSPEC;
	t->tca__pad1 = 0;
	t->tca__pad2 = 0;

	nest = nla_nest_start(skb, TCA_ACT_TAB);
	if (nest == NULL)
		goto nla_put_failure;

	ret = a_o->walk(skb, cb, RTM_GETACTION, &a);
	if (ret < 0)
		goto nla_put_failure;

	if (ret > 0) {
		nla_nest_end(skb, nest);
		ret = skb->len;
	} else
		nla_nest_cancel(skb, nest);

	nlh->nlmsg_len = skb_tail_pointer(skb) - b;
	if (NETLINK_CB(cb->skb).pid && ret)
		nlh->nlmsg_flags |= NLM_F_MULTI;
	module_put(a_o->owner);
	return skb->len;

nla_put_failure:
nlmsg_failure:
	module_put(a_o->owner);
	nlmsg_trim(skb, b);
	return skb->len;
}
Example #3
0
static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_gact *gact = a->priv;
	struct tc_gact opt = {
		.index   = gact->tcf_index,
		.refcnt  = gact->tcf_refcnt - ref,
		.bindcnt = gact->tcf_bindcnt - bind,
		.action  = gact->tcf_action,
	};
	struct tcf_t t;

	if (nla_put(skb, TCA_GACT_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;
#ifdef CONFIG_GACT_PROB
	if (gact->tcfg_ptype) {
		struct tc_gact_p p_opt = {
			.paction = gact->tcfg_paction,
			.pval    = gact->tcfg_pval,
			.ptype   = gact->tcfg_ptype,
		};

		if (nla_put(skb, TCA_GACT_PROB, sizeof(p_opt), &p_opt))
			goto nla_put_failure;
	}
#endif
	t.install = jiffies_to_clock_t(jiffies - gact->tcf_tm.install);
	t.lastuse = jiffies_to_clock_t(jiffies - gact->tcf_tm.lastuse);
	t.expires = jiffies_to_clock_t(gact->tcf_tm.expires);
	if (nla_put(skb, TCA_GACT_TM, sizeof(t), &t))
		goto nla_put_failure;
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static struct tc_action_ops act_gact_ops = {
	.kind		=	"gact",
	.type		=	TCA_ACT_GACT,
	.owner		=	THIS_MODULE,
	.act		=	tcf_gact,
	.dump		=	tcf_gact_dump,
	.init		=	tcf_gact_init,
};

MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
MODULE_DESCRIPTION("Generic Classifier actions");
MODULE_LICENSE("GPL");

static int __init gact_init_module(void)
{
#ifdef CONFIG_GACT_PROB
	pr_info("GACT probability on\n");
#else
	pr_info("GACT probability NOT on\n");
#endif
	return tcf_register_action(&act_gact_ops, GACT_TAB_MASK);
}

static void __exit gact_cleanup_module(void)
{
	tcf_unregister_action(&act_gact_ops);
}

module_init(gact_init_module);
module_exit(gact_cleanup_module);
Example #4
0
static int tcf_nat_dump(struct sk_buff *skb, struct tc_action *a,
			int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_nat *p = to_tcf_nat(a);
	struct tc_nat opt = {
		.old_addr = p->old_addr,
		.new_addr = p->new_addr,
		.mask     = p->mask,
		.flags    = p->flags,

		.index    = p->tcf_index,
		.action   = p->tcf_action,
		.refcnt   = p->tcf_refcnt - ref,
		.bindcnt  = p->tcf_bindcnt - bind,
	};
	struct tcf_t t;

	if (nla_put(skb, TCA_NAT_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;

	tcf_tm_dump(&t, &p->tcf_tm);
	if (nla_put_64bit(skb, TCA_NAT_TM, sizeof(t), &t, TCA_NAT_PAD))
		goto nla_put_failure;

	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_nat_walker(struct net *net, struct sk_buff *skb,
			  struct netlink_callback *cb, int type,
			  const struct tc_action_ops *ops)
{
	struct tc_action_net *tn = net_generic(net, nat_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops);
}

static int tcf_nat_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, nat_net_id);

	return tcf_hash_search(tn, a, index);
}

static struct tc_action_ops act_nat_ops = {
	.kind		=	"nat",
	.type		=	TCA_ACT_NAT,
	.owner		=	THIS_MODULE,
	.act		=	tcf_nat,
	.dump		=	tcf_nat_dump,
	.init		=	tcf_nat_init,
	.walk		=	tcf_nat_walker,
	.lookup		=	tcf_nat_search,
	.size		=	sizeof(struct tcf_nat),
};

static __net_init int nat_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, nat_net_id);

	return tc_action_net_init(tn, &act_nat_ops, NAT_TAB_MASK);
}

static void __net_exit nat_exit_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, nat_net_id);

	tc_action_net_exit(tn);
}

static struct pernet_operations nat_net_ops = {
	.init = nat_init_net,
	.exit = nat_exit_net,
	.id   = &nat_net_id,
	.size = sizeof(struct tc_action_net),
};

MODULE_DESCRIPTION("Stateless NAT actions");
MODULE_LICENSE("GPL");

static int __init nat_init_module(void)
{
	return tcf_register_action(&act_nat_ops, &nat_net_ops);
}

static void __exit nat_cleanup_module(void)
{
	tcf_unregister_action(&act_nat_ops, &nat_net_ops);
}

module_init(nat_init_module);
module_exit(nat_cleanup_module);
Example #5
0
static int tcf_csum_dump(struct sk_buff *skb, struct tc_action *a, int bind,
			 int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_csum *p = to_tcf_csum(a);
	struct tc_csum opt = {
		.update_flags = p->update_flags,
		.index   = p->tcf_index,
		.action  = p->tcf_action,
		.refcnt  = p->tcf_refcnt - ref,
		.bindcnt = p->tcf_bindcnt - bind,
	};
	struct tcf_t t;

	if (nla_put(skb, TCA_CSUM_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;

	tcf_tm_dump(&t, &p->tcf_tm);
	if (nla_put_64bit(skb, TCA_CSUM_TM, sizeof(t), &t, TCA_CSUM_PAD))
		goto nla_put_failure;

	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_csum_walker(struct net *net, struct sk_buff *skb,
			   struct netlink_callback *cb, int type,
			   const struct tc_action_ops *ops)
{
	struct tc_action_net *tn = net_generic(net, csum_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops);
}

static int tcf_csum_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, csum_net_id);

	return tcf_hash_search(tn, a, index);
}

static struct tc_action_ops act_csum_ops = {
	.kind		= "csum",
	.type		= TCA_ACT_CSUM,
	.owner		= THIS_MODULE,
	.act		= tcf_csum,
	.dump		= tcf_csum_dump,
	.init		= tcf_csum_init,
	.walk		= tcf_csum_walker,
	.lookup		= tcf_csum_search,
	.size		= sizeof(struct tcf_csum),
};

static __net_init int csum_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, csum_net_id);

	return tc_action_net_init(tn, &act_csum_ops, CSUM_TAB_MASK);
}

static void __net_exit csum_exit_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, csum_net_id);

	tc_action_net_exit(tn);
}

static struct pernet_operations csum_net_ops = {
	.init = csum_init_net,
	.exit = csum_exit_net,
	.id   = &csum_net_id,
	.size = sizeof(struct tc_action_net),
};

MODULE_DESCRIPTION("Checksum updating actions");
MODULE_LICENSE("GPL");

static int __init csum_init_module(void)
{
	return tcf_register_action(&act_csum_ops, &csum_net_ops);
}

static void __exit csum_cleanup_module(void)
{
	tcf_unregister_action(&act_csum_ops, &csum_net_ops);
}

module_init(csum_init_module);
module_exit(csum_cleanup_module);
Example #6
0
static int tcf_nat_dump(struct sk_buff *skb, struct tc_action *a,
			int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_nat *p = a->priv;
	struct tc_nat opt = {
	  .old_addr = p->old_addr,
	  .new_addr = p->new_addr,
	  .mask     = p->mask,
	  .flags    = p->flags,

	  .index    = p->tcf_index,
	  .action   = p->tcf_action,
	  .refcnt   = p->tcf_refcnt - ref,
	  .bindcnt  = p->tcf_bindcnt - bind,
	};
	struct tcf_t t;
	int s;

	NLA_PUT(skb, TCA_NAT_PARMS, sizeof(opt), &opt);
	t.install = jiffies_to_clock_t(jiffies - p->tcf_tm.install);
	t.lastuse = jiffies_to_clock_t(jiffies - p->tcf_tm.lastuse);
	t.expires = jiffies_to_clock_t(p->tcf_tm.expires);
	NLA_PUT(skb, TCA_NAT_TM, sizeof(t), &t);

	kfree(opt);

	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	kfree(opt);
	return -1;
}

static struct tc_action_ops act_nat_ops = {
	.kind		=	"nat",
	.hinfo		=	&nat_hash_info,
	.type		=	TCA_ACT_NAT,
	.capab		=	TCA_CAP_NONE,
	.owner		=	THIS_MODULE,
	.act		=	tcf_nat,
	.dump		=	tcf_nat_dump,
	.cleanup	=	tcf_nat_cleanup,
	.lookup		=	tcf_hash_search,
	.init		=	tcf_nat_init,
	.walk		=	tcf_generic_walker
};

MODULE_DESCRIPTION("Stateless NAT actions");
MODULE_LICENSE("GPL");

static int __init nat_init_module(void)
{
	return tcf_register_action(&act_nat_ops);
}

static void __exit nat_cleanup_module(void)
{
	tcf_unregister_action(&act_nat_ops);
}

module_init(nat_init_module);
module_exit(nat_cleanup_module);
Example #7
0
static int tcf_simp_dump(struct sk_buff *skb, struct tc_action *a,
			 int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_defact *d = to_defact(a);
	struct tc_defact opt = {
		.index   = d->tcf_index,
		.refcnt  = d->tcf_refcnt - ref,
		.bindcnt = d->tcf_bindcnt - bind,
		.action  = d->tcf_action,
	};
	struct tcf_t t;

	if (nla_put(skb, TCA_DEF_PARMS, sizeof(opt), &opt) ||
	    nla_put_string(skb, TCA_DEF_DATA, d->tcfd_defdata))
		goto nla_put_failure;

	tcf_tm_dump(&t, &d->tcf_tm);
	if (nla_put_64bit(skb, TCA_DEF_TM, sizeof(t), &t, TCA_DEF_PAD))
		goto nla_put_failure;
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_simp_walker(struct net *net, struct sk_buff *skb,
			   struct netlink_callback *cb, int type,
			   const struct tc_action_ops *ops,
			   struct netlink_ext_ack *extack)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops, extack);
}

static int tcf_simp_search(struct net *net, struct tc_action **a, u32 index,
			   struct netlink_ext_ack *extack)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	return tcf_idr_search(tn, a, index);
}

static struct tc_action_ops act_simp_ops = {
	.kind		=	"simple",
	.type		=	TCA_ACT_SIMP,
	.owner		=	THIS_MODULE,
	.act		=	tcf_simp,
	.dump		=	tcf_simp_dump,
	.cleanup	=	tcf_simp_release,
	.init		=	tcf_simp_init,
	.walk		=	tcf_simp_walker,
	.lookup		=	tcf_simp_search,
	.size		=	sizeof(struct tcf_defact),
};

static __net_init int simp_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	return tc_action_net_init(tn, &act_simp_ops);
}

static void __net_exit simp_exit_net(struct list_head *net_list)
{
	tc_action_net_exit(net_list, simp_net_id);
}

static struct pernet_operations simp_net_ops = {
	.init = simp_init_net,
	.exit_batch = simp_exit_net,
	.id   = &simp_net_id,
	.size = sizeof(struct tc_action_net),
};

MODULE_AUTHOR("Jamal Hadi Salim(2005)");
MODULE_DESCRIPTION("Simple example action");
MODULE_LICENSE("GPL");

static int __init simp_init_module(void)
{
	int ret = tcf_register_action(&act_simp_ops, &simp_net_ops);
	if (!ret)
		pr_info("Simple TC action Loaded\n");
	return ret;
}

static void __exit simp_cleanup_module(void)
{
	tcf_unregister_action(&act_simp_ops, &simp_net_ops);
}
Example #8
0
static int tcf_act_police_dump(struct sk_buff *skb, struct tc_action *a,
			       int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_police *police = to_police(a);
	struct tc_police opt = {
		.index = police->tcf_index,
		.action = police->tcf_action,
		.mtu = police->tcfp_mtu,
		.burst = PSCHED_NS2TICKS(police->tcfp_burst),
		.refcnt = police->tcf_refcnt - ref,
		.bindcnt = police->tcf_bindcnt - bind,
	};
	struct tcf_t t;

	if (police->rate_present)
		psched_ratecfg_getrate(&opt.rate, &police->rate);
	if (police->peak_present)
		psched_ratecfg_getrate(&opt.peakrate, &police->peak);
	if (nla_put(skb, TCA_POLICE_TBF, sizeof(opt), &opt))
		goto nla_put_failure;
	if (police->tcfp_result &&
	    nla_put_u32(skb, TCA_POLICE_RESULT, police->tcfp_result))
		goto nla_put_failure;
	if (police->tcfp_ewma_rate &&
	    nla_put_u32(skb, TCA_POLICE_AVRATE, police->tcfp_ewma_rate))
		goto nla_put_failure;

	t.install = jiffies_to_clock_t(jiffies - police->tcf_tm.install);
	t.lastuse = jiffies_to_clock_t(jiffies - police->tcf_tm.lastuse);
	t.firstuse = jiffies_to_clock_t(jiffies - police->tcf_tm.firstuse);
	t.expires = jiffies_to_clock_t(police->tcf_tm.expires);
	if (nla_put_64bit(skb, TCA_POLICE_TM, sizeof(t), &t, TCA_POLICE_PAD))
		goto nla_put_failure;

	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_police_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, police_net_id);

	return tcf_idr_search(tn, a, index);
}

MODULE_AUTHOR("Alexey Kuznetsov");
MODULE_DESCRIPTION("Policing actions");
MODULE_LICENSE("GPL");

static struct tc_action_ops act_police_ops = {
	.kind		=	"police",
	.type		=	TCA_ID_POLICE,
	.owner		=	THIS_MODULE,
	.act		=	tcf_act_police,
	.dump		=	tcf_act_police_dump,
	.init		=	tcf_act_police_init,
	.walk		=	tcf_act_police_walker,
	.lookup		=	tcf_police_search,
	.size		=	sizeof(struct tcf_police),
};

static __net_init int police_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, police_net_id);

	return tc_action_net_init(tn, &act_police_ops);
}

static void __net_exit police_exit_net(struct list_head *net_list)
{
	tc_action_net_exit(net_list, police_net_id);
}

static struct pernet_operations police_net_ops = {
	.init = police_init_net,
	.exit_batch = police_exit_net,
	.id   = &police_net_id,
	.size = sizeof(struct tc_action_net),
};

static int __init police_init_module(void)
{
	return tcf_register_action(&act_police_ops, &police_net_ops);
}

static void __exit police_cleanup_module(void)
{
	tcf_unregister_action(&act_police_ops, &police_net_ops);
}

module_init(police_init_module);
module_exit(police_cleanup_module);
Example #9
0
static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a,
			 int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_gact *gact = to_gact(a);
	struct tc_gact opt = {
		.index   = gact->tcf_index,
		.refcnt  = gact->tcf_refcnt - ref,
		.bindcnt = gact->tcf_bindcnt - bind,
		.action  = gact->tcf_action,
	};
	struct tcf_t t;

	if (nla_put(skb, TCA_GACT_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;
#ifdef CONFIG_GACT_PROB
	if (gact->tcfg_ptype) {
		struct tc_gact_p p_opt = {
			.paction = gact->tcfg_paction,
			.pval    = gact->tcfg_pval,
			.ptype   = gact->tcfg_ptype,
		};

		if (nla_put(skb, TCA_GACT_PROB, sizeof(p_opt), &p_opt))
			goto nla_put_failure;
	}
#endif
	tcf_tm_dump(&t, &gact->tcf_tm);
	if (nla_put_64bit(skb, TCA_GACT_TM, sizeof(t), &t, TCA_GACT_PAD))
		goto nla_put_failure;
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_gact_walker(struct net *net, struct sk_buff *skb,
			   struct netlink_callback *cb, int type,
			   const struct tc_action_ops *ops)
{
	struct tc_action_net *tn = net_generic(net, gact_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops);
}

static int tcf_gact_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, gact_net_id);

	return tcf_hash_search(tn, a, index);
}

static struct tc_action_ops act_gact_ops = {
	.kind		=	"gact",
	.type		=	TCA_ACT_GACT,
	.owner		=	THIS_MODULE,
	.act		=	tcf_gact,
	.stats_update	=	tcf_gact_stats_update,
	.dump		=	tcf_gact_dump,
	.init		=	tcf_gact_init,
	.walk		=	tcf_gact_walker,
	.lookup		=	tcf_gact_search,
	.size		=	sizeof(struct tcf_gact),
};

static __net_init int gact_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, gact_net_id);

	return tc_action_net_init(tn, &act_gact_ops, GACT_TAB_MASK);
}

static void __net_exit gact_exit_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, gact_net_id);

	tc_action_net_exit(tn);
}

static struct pernet_operations gact_net_ops = {
	.init = gact_init_net,
	.exit = gact_exit_net,
	.id   = &gact_net_id,
	.size = sizeof(struct tc_action_net),
};

MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
MODULE_DESCRIPTION("Generic Classifier actions");
MODULE_LICENSE("GPL");

static int __init gact_init_module(void)
{
#ifdef CONFIG_GACT_PROB
	pr_info("GACT probability on\n");
#else
	pr_info("GACT probability NOT on\n");
#endif

	return tcf_register_action(&act_gact_ops, &gact_net_ops);
}

static void __exit gact_cleanup_module(void)
{
	tcf_unregister_action(&act_gact_ops, &gact_net_ops);
}

module_init(gact_init_module);
module_exit(gact_cleanup_module);
Example #10
0
static int tcf_skbmod_dump(struct sk_buff *skb, struct tc_action *a,
			   int bind, int ref)
{
	struct tcf_skbmod *d = to_skbmod(a);
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_skbmod_params  *p = rtnl_dereference(d->skbmod_p);
	struct tc_skbmod opt = {
		.index   = d->tcf_index,
		.refcnt  = d->tcf_refcnt - ref,
		.bindcnt = d->tcf_bindcnt - bind,
		.action  = d->tcf_action,
	};
	struct tcf_t t;

	opt.flags  = p->flags;
	if (nla_put(skb, TCA_SKBMOD_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;
	if ((p->flags & SKBMOD_F_DMAC) &&
	    nla_put(skb, TCA_SKBMOD_DMAC, ETH_ALEN, p->eth_dst))
		goto nla_put_failure;
	if ((p->flags & SKBMOD_F_SMAC) &&
	    nla_put(skb, TCA_SKBMOD_SMAC, ETH_ALEN, p->eth_src))
		goto nla_put_failure;
	if ((p->flags & SKBMOD_F_ETYPE) &&
	    nla_put_u16(skb, TCA_SKBMOD_ETYPE, ntohs(p->eth_type)))
		goto nla_put_failure;

	tcf_tm_dump(&t, &d->tcf_tm);
	if (nla_put_64bit(skb, TCA_SKBMOD_TM, sizeof(t), &t, TCA_SKBMOD_PAD))
		goto nla_put_failure;

	return skb->len;
nla_put_failure:
	rcu_read_unlock();
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_skbmod_walker(struct net *net, struct sk_buff *skb,
			     struct netlink_callback *cb, int type,
			     const struct tc_action_ops *ops)
{
	struct tc_action_net *tn = net_generic(net, skbmod_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops);
}

static int tcf_skbmod_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, skbmod_net_id);

	return tcf_hash_search(tn, a, index);
}

static struct tc_action_ops act_skbmod_ops = {
	.kind		=	"skbmod",
	.type		=	TCA_ACT_SKBMOD,
	.owner		=	THIS_MODULE,
	.act		=	tcf_skbmod_run,
	.dump		=	tcf_skbmod_dump,
	.init		=	tcf_skbmod_init,
	.cleanup	=	tcf_skbmod_cleanup,
	.walk		=	tcf_skbmod_walker,
	.lookup		=	tcf_skbmod_search,
	.size		=	sizeof(struct tcf_skbmod),
};

static __net_init int skbmod_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, skbmod_net_id);

	return tc_action_net_init(tn, &act_skbmod_ops, SKBMOD_TAB_MASK);
}

static void __net_exit skbmod_exit_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, skbmod_net_id);

	tc_action_net_exit(tn);
}

static struct pernet_operations skbmod_net_ops = {
	.init = skbmod_init_net,
	.exit = skbmod_exit_net,
	.id   = &skbmod_net_id,
	.size = sizeof(struct tc_action_net),
};

MODULE_AUTHOR("Jamal Hadi Salim, <[email protected]>");
MODULE_DESCRIPTION("SKB data mod-ing");
MODULE_LICENSE("GPL");

static int __init skbmod_init_module(void)
{
	return tcf_register_action(&act_skbmod_ops, &skbmod_net_ops);
}

static void __exit skbmod_cleanup_module(void)
{
	tcf_unregister_action(&act_skbmod_ops, &skbmod_net_ops);
}

module_init(skbmod_init_module);
module_exit(skbmod_cleanup_module);
Example #11
0
static int tcf_sample_dump(struct sk_buff *skb, struct tc_action *a,
			   int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_sample *s = to_sample(a);
	struct tc_sample opt = {
		.index      = s->tcf_index,
		.action     = s->tcf_action,
		.refcnt     = s->tcf_refcnt - ref,
		.bindcnt    = s->tcf_bindcnt - bind,
	};
	struct tcf_t t;

	if (nla_put(skb, TCA_SAMPLE_PARMS, sizeof(opt), &opt))
		goto nla_put_failure;

	tcf_tm_dump(&t, &s->tcf_tm);
	if (nla_put_64bit(skb, TCA_SAMPLE_TM, sizeof(t), &t, TCA_SAMPLE_PAD))
		goto nla_put_failure;

	if (nla_put_u32(skb, TCA_SAMPLE_RATE, s->rate))
		goto nla_put_failure;

	if (s->truncate)
		if (nla_put_u32(skb, TCA_SAMPLE_TRUNC_SIZE, s->trunc_size))
			goto nla_put_failure;

	if (nla_put_u32(skb, TCA_SAMPLE_PSAMPLE_GROUP, s->psample_group_num))
		goto nla_put_failure;
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static int tcf_sample_walker(struct net *net, struct sk_buff *skb,
			     struct netlink_callback *cb, int type,
			     const struct tc_action_ops *ops)
{
	struct tc_action_net *tn = net_generic(net, sample_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops);
}

static int tcf_sample_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, sample_net_id);

	return tcf_hash_search(tn, a, index);
}

static struct tc_action_ops act_sample_ops = {
	.kind	  = "sample",
	.type	  = TCA_ACT_SAMPLE,
	.owner	  = THIS_MODULE,
	.act	  = tcf_sample_act,
	.dump	  = tcf_sample_dump,
	.init	  = tcf_sample_init,
	.cleanup  = tcf_sample_cleanup,
	.walk	  = tcf_sample_walker,
	.lookup	  = tcf_sample_search,
	.size	  = sizeof(struct tcf_sample),
};

static __net_init int sample_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, sample_net_id);

	return tc_action_net_init(tn, &act_sample_ops, SAMPLE_TAB_MASK);
}

static void __net_exit sample_exit_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, sample_net_id);

	tc_action_net_exit(tn);
}

static struct pernet_operations sample_net_ops = {
	.init = sample_init_net,
	.exit = sample_exit_net,
	.id   = &sample_net_id,
	.size = sizeof(struct tc_action_net),
};

static int __init sample_init_module(void)
{
	return tcf_register_action(&act_sample_ops, &sample_net_ops);
}

static void __exit sample_cleanup_module(void)
{
	tcf_unregister_action(&act_sample_ops, &sample_net_ops);
}

module_init(sample_init_module);
module_exit(sample_cleanup_module);

MODULE_AUTHOR("Yotam Gigi <[email protected]>");
MODULE_DESCRIPTION("Packet sampling action");
MODULE_LICENSE("GPL v2");
Example #12
0
static int tcf_ipt(struct sk_buff *skb, const struct tc_action *a,
		   struct tcf_result *res)
{
	int ret = 0, result = 0;
	struct tcf_ipt *ipt = to_ipt(a);
	struct xt_action_param par;
	struct nf_hook_state state = {
		.net	= dev_net(skb->dev),
		.in	= skb->dev,
		.hook	= ipt->tcfi_hook,
		.pf	= NFPROTO_IPV4,
	};

	if (skb_unclone(skb, GFP_ATOMIC))
		return TC_ACT_UNSPEC;

	spin_lock(&ipt->tcf_lock);

	tcf_lastuse_update(&ipt->tcf_tm);
	bstats_update(&ipt->tcf_bstats, skb);

	/* yes, we have to worry about both in and out dev
	 * worry later - danger - this API seems to have changed
	 * from earlier kernels
	 */
	par.state    = &state;
	par.target   = ipt->tcfi_t->u.kernel.target;
	par.targinfo = ipt->tcfi_t->data;
	ret = par.target->target(skb, &par);

	switch (ret) {
	case NF_ACCEPT:
		result = TC_ACT_OK;
		break;
	case NF_DROP:
		result = TC_ACT_SHOT;
		ipt->tcf_qstats.drops++;
		break;
	case XT_CONTINUE:
		result = TC_ACT_PIPE;
		break;
	default:
		net_notice_ratelimited("tc filter: Bogus netfilter code %d assume ACCEPT\n",
				       ret);
		result = TC_ACT_OK;
		break;
	}
	spin_unlock(&ipt->tcf_lock);
	return result;

}

static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind,
			int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_ipt *ipt = to_ipt(a);
	struct xt_entry_target *t;
	struct tcf_t tm;
	struct tc_cnt c;

	/* for simple targets kernel size == user size
	 * user name = target name
	 * for foolproof you need to not assume this
	 */

	t = kmemdup(ipt->tcfi_t, ipt->tcfi_t->u.user.target_size, GFP_ATOMIC);
	if (unlikely(!t))
		goto nla_put_failure;

	c.bindcnt = ipt->tcf_bindcnt - bind;
	c.refcnt = ipt->tcf_refcnt - ref;
	strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name);

	if (nla_put(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t) ||
	    nla_put_u32(skb, TCA_IPT_INDEX, ipt->tcf_index) ||
	    nla_put_u32(skb, TCA_IPT_HOOK, ipt->tcfi_hook) ||
	    nla_put(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c) ||
	    nla_put_string(skb, TCA_IPT_TABLE, ipt->tcfi_tname))
		goto nla_put_failure;

	tcf_tm_dump(&tm, &ipt->tcf_tm);
	if (nla_put_64bit(skb, TCA_IPT_TM, sizeof(tm), &tm, TCA_IPT_PAD))
		goto nla_put_failure;

	kfree(t);
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	kfree(t);
	return -1;
}